src/bin/lttng-crash/Makefile
src/vendor/Makefile
src/vendor/msgpack/Makefile
+ src/vendor/fmt/Makefile
tests/Makefile
tests/destructive/Makefile
tests/meta/Makefile
nodist__lttng_la_SOURCES = lttng_wrap.c
_lttng_la_LDFLAGS = -module
-_lttng_la_LIBADD = $(top_builddir)/src/lib/lttng-ctl/liblttng-ctl.la \
+_lttng_la_LIBADD = $(top_builddir)/src/lib/lttng-ctl/liblttng-ctl.la \
$(top_builddir)/src/common/libsessiond-comm.la \
- $(top_builddir)/src/common/libcommon-gpl.la
+ $(top_builddir)/src/common/libcommon-gpl.la \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
# Use this fake source file to force the link mode of the library
# from gcc to g++. The library contains only C code, but depends on
$(top_builddir)/src/common/libcommon-gpl.la \
$(top_builddir)/src/common/libindex.la \
$(top_builddir)/src/common/libhealth.la \
- $(top_builddir)/src/common/libtestpoint.la
+ $(top_builddir)/src/common/libtestpoint.la \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
lttng_consumerd_LDFLAGS = -rdynamic
$(top_builddir)/src/common/libcompat.la \
$(top_builddir)/src/common/libindex.la \
$(top_builddir)/src/common/libhealth.la \
- $(top_builddir)/src/common/libtestpoint.la
+ $(top_builddir)/src/common/libtestpoint.la \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
$(top_builddir)/src/common/libtestpoint.la \
$(top_builddir)/src/common/libhealth.la \
$(top_builddir)/src/common/libconfig.la \
- $(top_builddir)/src/common/libstring-utils.la
-
+ $(top_builddir)/src/common/libstring-utils.la \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
if HAVE_LIBLTTNG_UST_CTL
liblttng_sessiond_common_la_LIBADD += $(UST_CTL_LIBS)
range_integer_t>::value) {
LTTNG_THROW_ERROR(
lttng::format("Failed to serialize {}: unexpected role",
- _fragment["type"]));
+ _fragment["type"].get<std::string>()));
}
auto role_array = json::json::array();
if (type.mappings_->size() < 1) {
LTTNG_THROW_ERROR(lttng::format(
"Failed to serialize {}: enumeration must have at least one mapping",
- _fragment["type"]));
+ _fragment["type"].get<std::string>()));
}
json::json mappings_value;
struct formatter<lttng::sessiond::trace::field_location> : formatter<std::string> {
template <typename FormatContextType>
typename FormatContextType::iterator
- format(const lttng::sessiond::trace::field_location& location, FormatContextType& ctx)
+ format(const lttng::sessiond::trace::field_location& location, FormatContextType& ctx) const
{
std::string location_str{ "[" };
template <typename FormatContextType>
typename FormatContextType::iterator
format(typename lttng::sessiond::trace::signed_enumeration_type::mapping::range_t range,
- FormatContextType& ctx)
+ FormatContextType& ctx) const
{
return format_to(ctx.out(),
details::format_mapping_range<
template <typename FormatContextType>
typename FormatContextType::iterator
format(typename lttng::sessiond::trace::unsigned_enumeration_type::mapping::range_t range,
- FormatContextType& ctx)
+ FormatContextType& ctx) const
{
return format_to(ctx.out(),
details::format_mapping_range<
template <>
struct formatter<ust_app> : formatter<std::string> {
template <typename FormatContextType>
- typename FormatContextType::iterator format(const ust_app& app, FormatContextType& ctx)
+ typename FormatContextType::iterator format(const ust_app& app, FormatContextType& ctx) const
{
return format_to(
ctx.out(),
struct formatter<lttng::sessiond::ust::registry_event> : formatter<std::string> {
template <typename FormatContextType>
typename FormatContextType::iterator
- format(const lttng::sessiond::ust::registry_event& event, FormatContextType& ctx)
+ format(const lttng::sessiond::ust::registry_event& event, FormatContextType& ctx) const
{
return format_to(
ctx.out(),
$(top_builddir)/src/common/libfilter.la \
$(top_builddir)/src/common/libargpar-utils.la \
$(top_builddir)/src/vendor/argpar/libargpar.la \
+ $(top_builddir)/src/vendor/fmt/libfmt.la \
$(POPT_LIBS)
struct formatter<lttng_buffer_type> : formatter<std::string> {
template <typename FormatContextType>
typename FormatContextType::iterator format(lttng_buffer_type buffer_type,
- FormatContextType& ctx)
+ FormatContextType& ctx) const
{
auto name = "unknown";
struct formatter<lttng::source_location> : formatter<std::string> {
template <typename FormatContextType>
typename FormatContextType::iterator format(const lttng::source_location& location,
- FormatContextType& ctx)
+ FormatContextType& ctx) const
{
return format_to(ctx.out(),
"{}() {}:{}",
DIAGNOSTIC_PUSH
DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
-#define FMT_HEADER_ONLY
#include <vendor/fmt/core.h>
DIAGNOSTIC_POP
struct formatter<std::type_info> : formatter<std::string> {
template <typename FormatContextType>
typename FormatContextType::iterator format(const std::type_info& type_info,
- FormatContextType& ctx)
+ FormatContextType& ctx) const
{
int status;
/*
liblttng_ctl_la_LIBADD = \
$(top_builddir)/src/common/libsessiond-comm.la \
- $(top_builddir)/src/common/libcommon-lgpl.la
+ $(top_builddir)/src/common/libcommon-lgpl.la \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = lttng-ctl.pc
# SPDX-License-Identifier: GPL-2.0-only
-SUBDIRS = msgpack
+SUBDIRS = msgpack fmt
EXTRA_DIST = optional.hpp fmt nlohmann
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+#
+noinst_LTLIBRARIES = libfmt.la
+
+libfmt_la_SOURCES = \
+ args.h \
+ chrono.h \
+ color.h \
+ compile.h \
+ core.h \
+ format-inl.h \
+ format.cc \
+ format.h \
+ os.cc \
+ os.h \
+ ostream.h \
+ printf.h \
+ ranges.h \
+ std.h \
+ xchar.h
+
+libfmt_la_CXXFLAGS = $(AM_CXXFLAGS)
-// Formatting library for C++ - dynamic format arguments
+// Formatting library for C++ - dynamic argument lists
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
#ifndef FMT_ARGS_H_
#define FMT_ARGS_H_
-#include <functional> // std::reference_wrapper
-#include <memory> // std::unique_ptr
-#include <vector>
+#ifndef FMT_MODULE
+# include <functional> // std::reference_wrapper
+# include <memory> // std::unique_ptr
+# include <vector>
+#endif
-#include "core.h"
+#include "format.h" // std_string_view
FMT_BEGIN_NAMESPACE
template <typename T>
struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {};
-template <typename T> const T& unwrap(const T& v) { return v; }
-template <typename T> const T& unwrap(const std::reference_wrapper<T>& v) {
+template <typename T> auto unwrap(const T& v) -> const T& { return v; }
+template <typename T>
+auto unwrap(const std::reference_wrapper<T>& v) -> const T& {
return static_cast<const T&>(v);
}
-class dynamic_arg_list {
- // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
- // templates it doesn't complain about inability to deduce single translation
- // unit for placing vtable. So storage_node_base is made a fake template.
- template <typename = void> struct node {
- virtual ~node() = default;
- std::unique_ptr<node<>> next;
- };
+// node is defined outside dynamic_arg_list to workaround a C2504 bug in MSVC
+// 2022 (v17.10.0).
+//
+// Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
+// templates it doesn't complain about inability to deduce single translation
+// unit for placing vtable. So node is made a fake template.
+template <typename = void> struct node {
+ virtual ~node() = default;
+ std::unique_ptr<node<>> next;
+};
+class dynamic_arg_list {
template <typename T> struct typed_node : node<> {
T value;
std::unique_ptr<node<>> head_;
public:
- template <typename T, typename Arg> const T& push(const Arg& arg) {
+ template <typename T, typename Arg> auto push(const Arg& arg) -> const T& {
auto new_node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg));
auto& value = new_node->value;
new_node->next = std::move(head_);
} // namespace detail
/**
- \rst
- A dynamic version of `fmt::format_arg_store`.
- It's equipped with a storage to potentially temporary objects which lifetimes
- could be shorter than the format arguments object.
-
- It can be implicitly converted into `~fmt::basic_format_args` for passing
- into type-erased formatting functions such as `~fmt::vformat`.
- \endrst
+ * A dynamic list of formatting arguments with storage.
+ *
+ * It can be implicitly converted into `fmt::basic_format_args` for passing
+ * into type-erased formatting functions such as `fmt::vformat`.
*/
template <typename Context>
class dynamic_format_arg_store
friend class basic_format_args<Context>;
- unsigned long long get_types() const {
+ auto get_types() const -> unsigned long long {
return detail::is_unpacked_bit | data_.size() |
(named_info_.empty()
? 0ULL
: static_cast<unsigned long long>(detail::has_named_args_bit));
}
- const basic_format_arg<Context>* data() const {
+ auto data() const -> const basic_format_arg<Context>* {
return named_info_.empty() ? data_.data() : data_.data() + 1;
}
constexpr dynamic_format_arg_store() = default;
/**
- \rst
- Adds an argument into the dynamic store for later passing to a formatting
- function.
-
- Note that custom types and string types (but not string views) are copied
- into the store dynamically allocating memory if necessary.
-
- **Example**::
-
- fmt::dynamic_format_arg_store<fmt::format_context> store;
- store.push_back(42);
- store.push_back("abc");
- store.push_back(1.5f);
- std::string result = fmt::vformat("{} and {} and {}", store);
- \endrst
- */
+ * Adds an argument into the dynamic store for later passing to a formatting
+ * function.
+ *
+ * Note that custom types and string types (but not string views) are copied
+ * into the store dynamically allocating memory if necessary.
+ *
+ * **Example**:
+ *
+ * fmt::dynamic_format_arg_store<fmt::format_context> store;
+ * store.push_back(42);
+ * store.push_back("abc");
+ * store.push_back(1.5f);
+ * std::string result = fmt::vformat("{} and {} and {}", store);
+ */
template <typename T> void push_back(const T& arg) {
if (detail::const_check(need_copy<T>::value))
emplace_arg(dynamic_args_.push<stored_type<T>>(arg));
}
/**
- \rst
- Adds a reference to the argument into the dynamic store for later passing to
- a formatting function.
-
- **Example**::
-
- fmt::dynamic_format_arg_store<fmt::format_context> store;
- char band[] = "Rolling Stones";
- store.push_back(std::cref(band));
- band[9] = 'c'; // Changing str affects the output.
- std::string result = fmt::vformat("{}", store);
- // result == "Rolling Scones"
- \endrst
- */
+ * Adds a reference to the argument into the dynamic store for later passing
+ * to a formatting function.
+ *
+ * **Example**:
+ *
+ * fmt::dynamic_format_arg_store<fmt::format_context> store;
+ * char band[] = "Rolling Stones";
+ * store.push_back(std::cref(band));
+ * band[9] = 'c'; // Changing str affects the output.
+ * std::string result = fmt::vformat("{}", store);
+ * // result == "Rolling Scones"
+ */
template <typename T> void push_back(std::reference_wrapper<T> arg) {
static_assert(
need_copy<T>::value,
}
/**
- Adds named argument into the dynamic store for later passing to a formatting
- function. ``std::reference_wrapper`` is supported to avoid copying of the
- argument. The name is always copied into the store.
- */
+ * Adds named argument into the dynamic store for later passing to a
+ * formatting function. `std::reference_wrapper` is supported to avoid
+ * copying of the argument. The name is always copied into the store.
+ */
template <typename T>
void push_back(const detail::named_arg<char_type, T>& arg) {
const char_type* arg_name =
}
}
- /** Erase all elements from the store */
+ /// Erase all elements from the store.
void clear() {
data_.clear();
named_info_.clear();
dynamic_args_ = detail::dynamic_arg_list();
}
- /**
- \rst
- Reserves space to store at least *new_cap* arguments including
- *new_cap_named* named arguments.
- \endrst
- */
+ /// Reserves space to store at least `new_cap` arguments including
+ /// `new_cap_named` named arguments.
void reserve(size_t new_cap, size_t new_cap_named) {
FMT_ASSERT(new_cap >= new_cap_named,
"Set of arguments includes set of named arguments");
--- /dev/null
+// Formatting library for C++ - the base API for char/UTF-8
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#ifndef FMT_BASE_H_
+#define FMT_BASE_H_
+
+#if defined(FMT_IMPORT_STD) && !defined(FMT_MODULE)
+# define FMT_MODULE
+#endif
+
+#ifndef FMT_MODULE
+# include <limits.h> // CHAR_BIT
+# include <stdio.h> // FILE
+# include <string.h> // strlen
+
+// <cstddef> is also included transitively from <type_traits>.
+# include <cstddef> // std::byte
+# include <type_traits> // std::enable_if
+#endif
+
+// The fmt library version in the form major * 10000 + minor * 100 + patch.
+#define FMT_VERSION 110002
+
+// Detect compiler versions.
+#if defined(__clang__) && !defined(__ibmxl__)
+# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__)
+#else
+# define FMT_CLANG_VERSION 0
+#endif
+#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
+# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#else
+# define FMT_GCC_VERSION 0
+#endif
+#if defined(__ICL)
+# define FMT_ICC_VERSION __ICL
+#elif defined(__INTEL_COMPILER)
+# define FMT_ICC_VERSION __INTEL_COMPILER
+#else
+# define FMT_ICC_VERSION 0
+#endif
+#if defined(_MSC_VER)
+# define FMT_MSC_VERSION _MSC_VER
+#else
+# define FMT_MSC_VERSION 0
+#endif
+
+// Detect standard library versions.
+#ifdef _GLIBCXX_RELEASE
+# define FMT_GLIBCXX_RELEASE _GLIBCXX_RELEASE
+#else
+# define FMT_GLIBCXX_RELEASE 0
+#endif
+#ifdef _LIBCPP_VERSION
+# define FMT_LIBCPP_VERSION _LIBCPP_VERSION
+#else
+# define FMT_LIBCPP_VERSION 0
+#endif
+
+#ifdef _MSVC_LANG
+# define FMT_CPLUSPLUS _MSVC_LANG
+#else
+# define FMT_CPLUSPLUS __cplusplus
+#endif
+
+// Detect __has_*.
+#ifdef __has_feature
+# define FMT_HAS_FEATURE(x) __has_feature(x)
+#else
+# define FMT_HAS_FEATURE(x) 0
+#endif
+#ifdef __has_include
+# define FMT_HAS_INCLUDE(x) __has_include(x)
+#else
+# define FMT_HAS_INCLUDE(x) 0
+#endif
+#ifdef __has_cpp_attribute
+# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
+#else
+# define FMT_HAS_CPP_ATTRIBUTE(x) 0
+#endif
+
+#define FMT_HAS_CPP14_ATTRIBUTE(attribute) \
+ (FMT_CPLUSPLUS >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute))
+
+#define FMT_HAS_CPP17_ATTRIBUTE(attribute) \
+ (FMT_CPLUSPLUS >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute))
+
+// Detect C++14 relaxed constexpr.
+#ifdef FMT_USE_CONSTEXPR
+// Use the provided definition.
+#elif FMT_GCC_VERSION >= 600 && FMT_CPLUSPLUS >= 201402L
+// GCC only allows throw in constexpr since version 6:
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67371.
+# define FMT_USE_CONSTEXPR 1
+#elif FMT_ICC_VERSION
+# define FMT_USE_CONSTEXPR 0 // https://github.com/fmtlib/fmt/issues/1628
+#elif FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VERSION >= 1912
+# define FMT_USE_CONSTEXPR 1
+#else
+# define FMT_USE_CONSTEXPR 0
+#endif
+#if FMT_USE_CONSTEXPR
+# define FMT_CONSTEXPR constexpr
+#else
+# define FMT_CONSTEXPR
+#endif
+
+// Detect consteval, C++20 constexpr extensions and std::is_constant_evaluated.
+#if !defined(__cpp_lib_is_constant_evaluated)
+# define FMT_USE_CONSTEVAL 0
+#elif FMT_CPLUSPLUS < 201709L
+# define FMT_USE_CONSTEVAL 0
+#elif FMT_GLIBCXX_RELEASE && FMT_GLIBCXX_RELEASE < 10
+# define FMT_USE_CONSTEVAL 0
+#elif FMT_LIBCPP_VERSION && FMT_LIBCPP_VERSION < 10000
+# define FMT_USE_CONSTEVAL 0
+#elif defined(__apple_build_version__) && __apple_build_version__ < 14000029L
+# define FMT_USE_CONSTEVAL 0 // consteval is broken in Apple clang < 14.
+#elif FMT_MSC_VERSION && FMT_MSC_VERSION < 1929
+# define FMT_USE_CONSTEVAL 0 // consteval is broken in MSVC VS2019 < 16.10.
+#elif defined(__cpp_consteval)
+# define FMT_USE_CONSTEVAL 1
+#elif FMT_GCC_VERSION >= 1002 || FMT_CLANG_VERSION >= 1101
+# define FMT_USE_CONSTEVAL 1
+#else
+# define FMT_USE_CONSTEVAL 0
+#endif
+#if FMT_USE_CONSTEVAL
+# define FMT_CONSTEVAL consteval
+# define FMT_CONSTEXPR20 constexpr
+#else
+# define FMT_CONSTEVAL
+# define FMT_CONSTEXPR20
+#endif
+
+#if defined(FMT_USE_NONTYPE_TEMPLATE_ARGS)
+// Use the provided definition.
+#elif defined(__NVCOMPILER)
+# define FMT_USE_NONTYPE_TEMPLATE_ARGS 0
+#elif FMT_GCC_VERSION >= 903 && FMT_CPLUSPLUS >= 201709L
+# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1
+#elif defined(__cpp_nontype_template_args) && \
+ __cpp_nontype_template_args >= 201911L
+# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1
+#elif FMT_CLANG_VERSION >= 1200 && FMT_CPLUSPLUS >= 202002L
+# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1
+#else
+# define FMT_USE_NONTYPE_TEMPLATE_ARGS 0
+#endif
+
+#ifdef FMT_USE_CONCEPTS
+// Use the provided definition.
+#elif defined(__cpp_concepts)
+# define FMT_USE_CONCEPTS 1
+#else
+# define FMT_USE_CONCEPTS 0
+#endif
+
+// Check if exceptions are disabled.
+#ifdef FMT_EXCEPTIONS
+// Use the provided definition.
+#elif defined(__GNUC__) && !defined(__EXCEPTIONS)
+# define FMT_EXCEPTIONS 0
+#elif FMT_MSC_VERSION && !_HAS_EXCEPTIONS
+# define FMT_EXCEPTIONS 0
+#else
+# define FMT_EXCEPTIONS 1
+#endif
+#if FMT_EXCEPTIONS
+# define FMT_TRY try
+# define FMT_CATCH(x) catch (x)
+#else
+# define FMT_TRY if (true)
+# define FMT_CATCH(x) if (false)
+#endif
+
+#if FMT_HAS_CPP17_ATTRIBUTE(fallthrough)
+# define FMT_FALLTHROUGH [[fallthrough]]
+#elif defined(__clang__)
+# define FMT_FALLTHROUGH [[clang::fallthrough]]
+#elif FMT_GCC_VERSION >= 700 && \
+ (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520)
+# define FMT_FALLTHROUGH [[gnu::fallthrough]]
+#else
+# define FMT_FALLTHROUGH
+#endif
+
+// Disable [[noreturn]] on MSVC/NVCC because of bogus unreachable code warnings.
+#if FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VERSION && !defined(__NVCC__)
+# define FMT_NORETURN [[noreturn]]
+#else
+# define FMT_NORETURN
+#endif
+
+#ifndef FMT_NODISCARD
+# if FMT_HAS_CPP17_ATTRIBUTE(nodiscard)
+# define FMT_NODISCARD [[nodiscard]]
+# else
+# define FMT_NODISCARD
+# endif
+#endif
+
+#ifdef FMT_DEPRECATED
+// Use the provided definition.
+#elif FMT_HAS_CPP14_ATTRIBUTE(deprecated)
+# define FMT_DEPRECATED [[deprecated]]
+#else
+# define FMT_DEPRECATED /* deprecated */
+#endif
+
+#ifdef FMT_INLINE
+// Use the provided definition.
+#elif FMT_GCC_VERSION || FMT_CLANG_VERSION
+# define FMT_ALWAYS_INLINE inline __attribute__((always_inline))
+#else
+# define FMT_ALWAYS_INLINE inline
+#endif
+// A version of FMT_INLINE to prevent code bloat in debug mode.
+#ifdef NDEBUG
+# define FMT_INLINE FMT_ALWAYS_INLINE
+#else
+# define FMT_INLINE inline
+#endif
+
+#if FMT_GCC_VERSION || FMT_CLANG_VERSION
+# define FMT_VISIBILITY(value) __attribute__((visibility(value)))
+#else
+# define FMT_VISIBILITY(value)
+#endif
+
+#ifndef FMT_GCC_PRAGMA
+// Workaround a _Pragma bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59884
+// and an nvhpc warning: https://github.com/fmtlib/fmt/pull/2582.
+# if FMT_GCC_VERSION >= 504 && !defined(__NVCOMPILER)
+# define FMT_GCC_PRAGMA(arg) _Pragma(arg)
+# else
+# define FMT_GCC_PRAGMA(arg)
+# endif
+#endif
+
+// GCC < 5 requires this-> in decltype.
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500
+# define FMT_DECLTYPE_THIS this->
+#else
+# define FMT_DECLTYPE_THIS
+#endif
+
+#if FMT_MSC_VERSION
+# define FMT_MSC_WARNING(...) __pragma(warning(__VA_ARGS__))
+# define FMT_UNCHECKED_ITERATOR(It) \
+ using _Unchecked_type = It // Mark iterator as checked.
+#else
+# define FMT_MSC_WARNING(...)
+# define FMT_UNCHECKED_ITERATOR(It) using unchecked_type = It
+#endif
+
+#ifndef FMT_BEGIN_NAMESPACE
+# define FMT_BEGIN_NAMESPACE \
+ namespace fmt { \
+ inline namespace v11 {
+# define FMT_END_NAMESPACE \
+ } \
+ }
+#endif
+
+#ifndef FMT_EXPORT
+# define FMT_EXPORT
+# define FMT_BEGIN_EXPORT
+# define FMT_END_EXPORT
+#endif
+
+#if !defined(FMT_HEADER_ONLY) && defined(_WIN32)
+# if defined(FMT_LIB_EXPORT)
+# define FMT_API __declspec(dllexport)
+# elif defined(FMT_SHARED)
+# define FMT_API __declspec(dllimport)
+# endif
+#elif defined(FMT_LIB_EXPORT) || defined(FMT_SHARED)
+# define FMT_API FMT_VISIBILITY("default")
+#endif
+#ifndef FMT_API
+# define FMT_API
+#endif
+
+#ifndef FMT_UNICODE
+# define FMT_UNICODE 1
+#endif
+
+// Check if rtti is available.
+#ifndef FMT_USE_RTTI
+// __RTTI is for EDG compilers. _CPPRTTI is for MSVC.
+# if defined(__GXX_RTTI) || FMT_HAS_FEATURE(cxx_rtti) || defined(_CPPRTTI) || \
+ defined(__INTEL_RTTI__) || defined(__RTTI)
+# define FMT_USE_RTTI 1
+# else
+# define FMT_USE_RTTI 0
+# endif
+#endif
+
+#define FMT_FWD(...) static_cast<decltype(__VA_ARGS__)&&>(__VA_ARGS__)
+
+// Enable minimal optimizations for more compact code in debug mode.
+FMT_GCC_PRAGMA("GCC push_options")
+#if !defined(__OPTIMIZE__) && !defined(__CUDACC__)
+FMT_GCC_PRAGMA("GCC optimize(\"Og\")")
+#endif
+
+FMT_BEGIN_NAMESPACE
+
+// Implementations of enable_if_t and other metafunctions for older systems.
+template <bool B, typename T = void>
+using enable_if_t = typename std::enable_if<B, T>::type;
+template <bool B, typename T, typename F>
+using conditional_t = typename std::conditional<B, T, F>::type;
+template <bool B> using bool_constant = std::integral_constant<bool, B>;
+template <typename T>
+using remove_reference_t = typename std::remove_reference<T>::type;
+template <typename T>
+using remove_const_t = typename std::remove_const<T>::type;
+template <typename T>
+using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type;
+template <typename T> struct type_identity {
+ using type = T;
+};
+template <typename T> using type_identity_t = typename type_identity<T>::type;
+template <typename T>
+using make_unsigned_t = typename std::make_unsigned<T>::type;
+template <typename T>
+using underlying_t = typename std::underlying_type<T>::type;
+
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500
+// A workaround for gcc 4.8 to make void_t work in a SFINAE context.
+template <typename...> struct void_t_impl {
+ using type = void;
+};
+template <typename... T> using void_t = typename void_t_impl<T...>::type;
+#else
+template <typename...> using void_t = void;
+#endif
+
+struct monostate {
+ constexpr monostate() {}
+};
+
+// An enable_if helper to be used in template parameters which results in much
+// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed
+// to workaround a bug in MSVC 2019 (see #1140 and #1186).
+#ifdef FMT_DOC
+# define FMT_ENABLE_IF(...)
+#else
+# define FMT_ENABLE_IF(...) fmt::enable_if_t<(__VA_ARGS__), int> = 0
+#endif
+
+// This is defined in base.h instead of format.h to avoid injecting in std.
+// It is a template to avoid undesirable implicit conversions to std::byte.
+#ifdef __cpp_lib_byte
+template <typename T, FMT_ENABLE_IF(std::is_same<T, std::byte>::value)>
+inline auto format_as(T b) -> unsigned char {
+ return static_cast<unsigned char>(b);
+}
+#endif
+
+namespace detail {
+// Suppresses "unused variable" warnings with the method described in
+// https://herbsutter.com/2009/10/18/mailbag-shutting-up-compiler-warnings/.
+// (void)var does not work on many Intel compilers.
+template <typename... T> FMT_CONSTEXPR void ignore_unused(const T&...) {}
+
+constexpr auto is_constant_evaluated(bool default_value = false) noexcept
+ -> bool {
+// Workaround for incompatibility between libstdc++ consteval-based
+// std::is_constant_evaluated() implementation and clang-14:
+// https://github.com/fmtlib/fmt/issues/3247.
+#if FMT_CPLUSPLUS >= 202002L && FMT_GLIBCXX_RELEASE >= 12 && \
+ (FMT_CLANG_VERSION >= 1400 && FMT_CLANG_VERSION < 1500)
+ ignore_unused(default_value);
+ return __builtin_is_constant_evaluated();
+#elif defined(__cpp_lib_is_constant_evaluated)
+ ignore_unused(default_value);
+ return std::is_constant_evaluated();
+#else
+ return default_value;
+#endif
+}
+
+// Suppresses "conditional expression is constant" warnings.
+template <typename T> constexpr auto const_check(T value) -> T { return value; }
+
+FMT_NORETURN FMT_API void assert_fail(const char* file, int line,
+ const char* message);
+
+#if defined(FMT_ASSERT)
+// Use the provided definition.
+#elif defined(NDEBUG)
+// FMT_ASSERT is not empty to avoid -Wempty-body.
+# define FMT_ASSERT(condition, message) \
+ fmt::detail::ignore_unused((condition), (message))
+#else
+# define FMT_ASSERT(condition, message) \
+ ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \
+ ? (void)0 \
+ : fmt::detail::assert_fail(__FILE__, __LINE__, (message)))
+#endif
+
+#ifdef FMT_USE_INT128
+// Do nothing.
+#elif defined(__SIZEOF_INT128__) && !defined(__NVCC__) && \
+ !(FMT_CLANG_VERSION && FMT_MSC_VERSION)
+# define FMT_USE_INT128 1
+using int128_opt = __int128_t; // An optional native 128-bit integer.
+using uint128_opt = __uint128_t;
+template <typename T> inline auto convert_for_visit(T value) -> T {
+ return value;
+}
+#else
+# define FMT_USE_INT128 0
+#endif
+#if !FMT_USE_INT128
+enum class int128_opt {};
+enum class uint128_opt {};
+// Reduce template instantiations.
+template <typename T> auto convert_for_visit(T) -> monostate { return {}; }
+#endif
+
+// Casts a nonnegative integer to unsigned.
+template <typename Int>
+FMT_CONSTEXPR auto to_unsigned(Int value) -> make_unsigned_t<Int> {
+ FMT_ASSERT(std::is_unsigned<Int>::value || value >= 0, "negative value");
+ return static_cast<make_unsigned_t<Int>>(value);
+}
+
+// A heuristic to detect std::string and std::[experimental::]string_view.
+// It is mainly used to avoid dependency on <[experimental/]string_view>.
+template <typename T, typename Enable = void>
+struct is_std_string_like : std::false_type {};
+template <typename T>
+struct is_std_string_like<T, void_t<decltype(std::declval<T>().find_first_of(
+ typename T::value_type(), 0))>>
+ : std::is_convertible<decltype(std::declval<T>().data()),
+ const typename T::value_type*> {};
+
+// Returns true iff the literal encoding is UTF-8.
+constexpr auto is_utf8_enabled() -> bool {
+ // Avoid an MSVC sign extension bug: https://github.com/fmtlib/fmt/pull/2297.
+ using uchar = unsigned char;
+ return sizeof("\u00A7") == 3 && uchar("\u00A7"[0]) == 0xC2 &&
+ uchar("\u00A7"[1]) == 0xA7;
+}
+constexpr auto use_utf8() -> bool {
+ return !FMT_MSC_VERSION || is_utf8_enabled();
+}
+
+static_assert(!FMT_UNICODE || use_utf8(),
+ "Unicode support requires compiling with /utf-8");
+
+template <typename Char> FMT_CONSTEXPR auto length(const Char* s) -> size_t {
+ size_t len = 0;
+ while (*s++) ++len;
+ return len;
+}
+
+template <typename Char>
+FMT_CONSTEXPR auto compare(const Char* s1, const Char* s2, std::size_t n)
+ -> int {
+ if (!is_constant_evaluated() && sizeof(Char) == 1) return memcmp(s1, s2, n);
+ for (; n != 0; ++s1, ++s2, --n) {
+ if (*s1 < *s2) return -1;
+ if (*s1 > *s2) return 1;
+ }
+ return 0;
+}
+
+namespace adl {
+using namespace std;
+
+template <typename Container>
+auto invoke_back_inserter()
+ -> decltype(back_inserter(std::declval<Container&>()));
+} // namespace adl
+
+template <typename It, typename Enable = std::true_type>
+struct is_back_insert_iterator : std::false_type {};
+
+template <typename It>
+struct is_back_insert_iterator<
+ It, bool_constant<std::is_same<
+ decltype(adl::invoke_back_inserter<typename It::container_type>()),
+ It>::value>> : std::true_type {};
+
+// Extracts a reference to the container from *insert_iterator.
+template <typename OutputIt>
+inline auto get_container(OutputIt it) -> typename OutputIt::container_type& {
+ struct accessor : OutputIt {
+ accessor(OutputIt base) : OutputIt(base) {}
+ using OutputIt::container;
+ };
+ return *accessor(it).container;
+}
+} // namespace detail
+
+// Checks whether T is a container with contiguous storage.
+template <typename T> struct is_contiguous : std::false_type {};
+
+/**
+ * An implementation of `std::basic_string_view` for pre-C++17. It provides a
+ * subset of the API. `fmt::basic_string_view` is used for format strings even
+ * if `std::basic_string_view` is available to prevent issues when a library is
+ * compiled with a different `-std` option than the client code (which is not
+ * recommended).
+ */
+FMT_EXPORT
+template <typename Char> class basic_string_view {
+ private:
+ const Char* data_;
+ size_t size_;
+
+ public:
+ using value_type = Char;
+ using iterator = const Char*;
+
+ constexpr basic_string_view() noexcept : data_(nullptr), size_(0) {}
+
+ /// Constructs a string reference object from a C string and a size.
+ constexpr basic_string_view(const Char* s, size_t count) noexcept
+ : data_(s), size_(count) {}
+
+ constexpr basic_string_view(std::nullptr_t) = delete;
+
+ /// Constructs a string reference object from a C string.
+ FMT_CONSTEXPR20
+ basic_string_view(const Char* s)
+ : data_(s),
+ size_(detail::const_check(std::is_same<Char, char>::value &&
+ !detail::is_constant_evaluated(false))
+ ? strlen(reinterpret_cast<const char*>(s))
+ : detail::length(s)) {}
+
+ /// Constructs a string reference from a `std::basic_string` or a
+ /// `std::basic_string_view` object.
+ template <typename S,
+ FMT_ENABLE_IF(detail::is_std_string_like<S>::value&& std::is_same<
+ typename S::value_type, Char>::value)>
+ FMT_CONSTEXPR basic_string_view(const S& s) noexcept
+ : data_(s.data()), size_(s.size()) {}
+
+ /// Returns a pointer to the string data.
+ constexpr auto data() const noexcept -> const Char* { return data_; }
+
+ /// Returns the string size.
+ constexpr auto size() const noexcept -> size_t { return size_; }
+
+ constexpr auto begin() const noexcept -> iterator { return data_; }
+ constexpr auto end() const noexcept -> iterator { return data_ + size_; }
+
+ constexpr auto operator[](size_t pos) const noexcept -> const Char& {
+ return data_[pos];
+ }
+
+ FMT_CONSTEXPR void remove_prefix(size_t n) noexcept {
+ data_ += n;
+ size_ -= n;
+ }
+
+ FMT_CONSTEXPR auto starts_with(basic_string_view<Char> sv) const noexcept
+ -> bool {
+ return size_ >= sv.size_ && detail::compare(data_, sv.data_, sv.size_) == 0;
+ }
+ FMT_CONSTEXPR auto starts_with(Char c) const noexcept -> bool {
+ return size_ >= 1 && *data_ == c;
+ }
+ FMT_CONSTEXPR auto starts_with(const Char* s) const -> bool {
+ return starts_with(basic_string_view<Char>(s));
+ }
+
+ // Lexicographically compare this string reference to other.
+ FMT_CONSTEXPR auto compare(basic_string_view other) const -> int {
+ size_t str_size = size_ < other.size_ ? size_ : other.size_;
+ int result = detail::compare(data_, other.data_, str_size);
+ if (result == 0)
+ result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1);
+ return result;
+ }
+
+ FMT_CONSTEXPR friend auto operator==(basic_string_view lhs,
+ basic_string_view rhs) -> bool {
+ return lhs.compare(rhs) == 0;
+ }
+ friend auto operator!=(basic_string_view lhs, basic_string_view rhs) -> bool {
+ return lhs.compare(rhs) != 0;
+ }
+ friend auto operator<(basic_string_view lhs, basic_string_view rhs) -> bool {
+ return lhs.compare(rhs) < 0;
+ }
+ friend auto operator<=(basic_string_view lhs, basic_string_view rhs) -> bool {
+ return lhs.compare(rhs) <= 0;
+ }
+ friend auto operator>(basic_string_view lhs, basic_string_view rhs) -> bool {
+ return lhs.compare(rhs) > 0;
+ }
+ friend auto operator>=(basic_string_view lhs, basic_string_view rhs) -> bool {
+ return lhs.compare(rhs) >= 0;
+ }
+};
+
+FMT_EXPORT
+using string_view = basic_string_view<char>;
+
+/// Specifies if `T` is a character type. Can be specialized by users.
+FMT_EXPORT
+template <typename T> struct is_char : std::false_type {};
+template <> struct is_char<char> : std::true_type {};
+
+namespace detail {
+
+// Constructs fmt::basic_string_view<Char> from types implicitly convertible
+// to it, deducing Char. Explicitly convertible types such as the ones returned
+// from FMT_STRING are intentionally excluded.
+template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)>
+constexpr auto to_string_view(const Char* s) -> basic_string_view<Char> {
+ return s;
+}
+template <typename T, FMT_ENABLE_IF(is_std_string_like<T>::value)>
+constexpr auto to_string_view(const T& s)
+ -> basic_string_view<typename T::value_type> {
+ return s;
+}
+template <typename Char>
+constexpr auto to_string_view(basic_string_view<Char> s)
+ -> basic_string_view<Char> {
+ return s;
+}
+
+template <typename T, typename Enable = void>
+struct has_to_string_view : std::false_type {};
+// detail:: is intentional since to_string_view is not an extension point.
+template <typename T>
+struct has_to_string_view<
+ T, void_t<decltype(detail::to_string_view(std::declval<T>()))>>
+ : std::true_type {};
+
+template <typename Char, Char... C> struct string_literal {
+ static constexpr Char value[sizeof...(C)] = {C...};
+ constexpr operator basic_string_view<Char>() const {
+ return {value, sizeof...(C)};
+ }
+};
+#if FMT_CPLUSPLUS < 201703L
+template <typename Char, Char... C>
+constexpr Char string_literal<Char, C...>::value[sizeof...(C)];
+#endif
+
+enum class type {
+ none_type,
+ // Integer types should go first,
+ int_type,
+ uint_type,
+ long_long_type,
+ ulong_long_type,
+ int128_type,
+ uint128_type,
+ bool_type,
+ char_type,
+ last_integer_type = char_type,
+ // followed by floating-point types.
+ float_type,
+ double_type,
+ long_double_type,
+ last_numeric_type = long_double_type,
+ cstring_type,
+ string_type,
+ pointer_type,
+ custom_type
+};
+
+// Maps core type T to the corresponding type enum constant.
+template <typename T, typename Char>
+struct type_constant : std::integral_constant<type, type::custom_type> {};
+
+#define FMT_TYPE_CONSTANT(Type, constant) \
+ template <typename Char> \
+ struct type_constant<Type, Char> \
+ : std::integral_constant<type, type::constant> {}
+
+FMT_TYPE_CONSTANT(int, int_type);
+FMT_TYPE_CONSTANT(unsigned, uint_type);
+FMT_TYPE_CONSTANT(long long, long_long_type);
+FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type);
+FMT_TYPE_CONSTANT(int128_opt, int128_type);
+FMT_TYPE_CONSTANT(uint128_opt, uint128_type);
+FMT_TYPE_CONSTANT(bool, bool_type);
+FMT_TYPE_CONSTANT(Char, char_type);
+FMT_TYPE_CONSTANT(float, float_type);
+FMT_TYPE_CONSTANT(double, double_type);
+FMT_TYPE_CONSTANT(long double, long_double_type);
+FMT_TYPE_CONSTANT(const Char*, cstring_type);
+FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type);
+FMT_TYPE_CONSTANT(const void*, pointer_type);
+
+constexpr auto is_integral_type(type t) -> bool {
+ return t > type::none_type && t <= type::last_integer_type;
+}
+constexpr auto is_arithmetic_type(type t) -> bool {
+ return t > type::none_type && t <= type::last_numeric_type;
+}
+
+constexpr auto set(type rhs) -> int { return 1 << static_cast<int>(rhs); }
+constexpr auto in(type t, int set) -> bool {
+ return ((set >> static_cast<int>(t)) & 1) != 0;
+}
+
+// Bitsets of types.
+enum {
+ sint_set =
+ set(type::int_type) | set(type::long_long_type) | set(type::int128_type),
+ uint_set = set(type::uint_type) | set(type::ulong_long_type) |
+ set(type::uint128_type),
+ bool_set = set(type::bool_type),
+ char_set = set(type::char_type),
+ float_set = set(type::float_type) | set(type::double_type) |
+ set(type::long_double_type),
+ string_set = set(type::string_type),
+ cstring_set = set(type::cstring_type),
+ pointer_set = set(type::pointer_type)
+};
+} // namespace detail
+
+/// Reports a format error at compile time or, via a `format_error` exception,
+/// at runtime.
+// This function is intentionally not constexpr to give a compile-time error.
+FMT_NORETURN FMT_API void report_error(const char* message);
+
+FMT_DEPRECATED FMT_NORETURN inline void throw_format_error(
+ const char* message) {
+ report_error(message);
+}
+
+/// String's character (code unit) type.
+template <typename S,
+ typename V = decltype(detail::to_string_view(std::declval<S>()))>
+using char_t = typename V::value_type;
+
+/**
+ * Parsing context consisting of a format string range being parsed and an
+ * argument counter for automatic indexing.
+ * You can use the `format_parse_context` type alias for `char` instead.
+ */
+FMT_EXPORT
+template <typename Char> class basic_format_parse_context {
+ private:
+ basic_string_view<Char> format_str_;
+ int next_arg_id_;
+
+ FMT_CONSTEXPR void do_check_arg_id(int id);
+
+ public:
+ using char_type = Char;
+ using iterator = const Char*;
+
+ explicit constexpr basic_format_parse_context(
+ basic_string_view<Char> format_str, int next_arg_id = 0)
+ : format_str_(format_str), next_arg_id_(next_arg_id) {}
+
+ /// Returns an iterator to the beginning of the format string range being
+ /// parsed.
+ constexpr auto begin() const noexcept -> iterator {
+ return format_str_.begin();
+ }
+
+ /// Returns an iterator past the end of the format string range being parsed.
+ constexpr auto end() const noexcept -> iterator { return format_str_.end(); }
+
+ /// Advances the begin iterator to `it`.
+ FMT_CONSTEXPR void advance_to(iterator it) {
+ format_str_.remove_prefix(detail::to_unsigned(it - begin()));
+ }
+
+ /// Reports an error if using the manual argument indexing; otherwise returns
+ /// the next argument index and switches to the automatic indexing.
+ FMT_CONSTEXPR auto next_arg_id() -> int {
+ if (next_arg_id_ < 0) {
+ report_error("cannot switch from manual to automatic argument indexing");
+ return 0;
+ }
+ int id = next_arg_id_++;
+ do_check_arg_id(id);
+ return id;
+ }
+
+ /// Reports an error if using the automatic argument indexing; otherwise
+ /// switches to the manual indexing.
+ FMT_CONSTEXPR void check_arg_id(int id) {
+ if (next_arg_id_ > 0) {
+ report_error("cannot switch from automatic to manual argument indexing");
+ return;
+ }
+ next_arg_id_ = -1;
+ do_check_arg_id(id);
+ }
+ FMT_CONSTEXPR void check_arg_id(basic_string_view<Char>) {
+ next_arg_id_ = -1;
+ }
+ FMT_CONSTEXPR void check_dynamic_spec(int arg_id);
+};
+
+FMT_EXPORT
+using format_parse_context = basic_format_parse_context<char>;
+
+namespace detail {
+// A parse context with extra data used only in compile-time checks.
+template <typename Char>
+class compile_parse_context : public basic_format_parse_context<Char> {
+ private:
+ int num_args_;
+ const type* types_;
+ using base = basic_format_parse_context<Char>;
+
+ public:
+ explicit FMT_CONSTEXPR compile_parse_context(
+ basic_string_view<Char> format_str, int num_args, const type* types,
+ int next_arg_id = 0)
+ : base(format_str, next_arg_id), num_args_(num_args), types_(types) {}
+
+ constexpr auto num_args() const -> int { return num_args_; }
+ constexpr auto arg_type(int id) const -> type { return types_[id]; }
+
+ FMT_CONSTEXPR auto next_arg_id() -> int {
+ int id = base::next_arg_id();
+ if (id >= num_args_) report_error("argument not found");
+ return id;
+ }
+
+ FMT_CONSTEXPR void check_arg_id(int id) {
+ base::check_arg_id(id);
+ if (id >= num_args_) report_error("argument not found");
+ }
+ using base::check_arg_id;
+
+ FMT_CONSTEXPR void check_dynamic_spec(int arg_id) {
+ detail::ignore_unused(arg_id);
+ if (arg_id < num_args_ && types_ && !is_integral_type(types_[arg_id]))
+ report_error("width/precision is not integer");
+ }
+};
+
+/// A contiguous memory buffer with an optional growing ability. It is an
+/// internal class and shouldn't be used directly, only via `memory_buffer`.
+template <typename T> class buffer {
+ private:
+ T* ptr_;
+ size_t size_;
+ size_t capacity_;
+
+ using grow_fun = void (*)(buffer& buf, size_t capacity);
+ grow_fun grow_;
+
+ protected:
+ // Don't initialize ptr_ since it is not accessed to save a few cycles.
+ FMT_MSC_WARNING(suppress : 26495)
+ FMT_CONSTEXPR20 buffer(grow_fun grow, size_t sz) noexcept
+ : size_(sz), capacity_(sz), grow_(grow) {}
+
+ constexpr buffer(grow_fun grow, T* p = nullptr, size_t sz = 0,
+ size_t cap = 0) noexcept
+ : ptr_(p), size_(sz), capacity_(cap), grow_(grow) {}
+
+ FMT_CONSTEXPR20 ~buffer() = default;
+ buffer(buffer&&) = default;
+
+ /// Sets the buffer data and capacity.
+ FMT_CONSTEXPR void set(T* buf_data, size_t buf_capacity) noexcept {
+ ptr_ = buf_data;
+ capacity_ = buf_capacity;
+ }
+
+ public:
+ using value_type = T;
+ using const_reference = const T&;
+
+ buffer(const buffer&) = delete;
+ void operator=(const buffer&) = delete;
+
+ auto begin() noexcept -> T* { return ptr_; }
+ auto end() noexcept -> T* { return ptr_ + size_; }
+
+ auto begin() const noexcept -> const T* { return ptr_; }
+ auto end() const noexcept -> const T* { return ptr_ + size_; }
+
+ /// Returns the size of this buffer.
+ constexpr auto size() const noexcept -> size_t { return size_; }
+
+ /// Returns the capacity of this buffer.
+ constexpr auto capacity() const noexcept -> size_t { return capacity_; }
+
+ /// Returns a pointer to the buffer data (not null-terminated).
+ FMT_CONSTEXPR auto data() noexcept -> T* { return ptr_; }
+ FMT_CONSTEXPR auto data() const noexcept -> const T* { return ptr_; }
+
+ /// Clears this buffer.
+ void clear() { size_ = 0; }
+
+ // Tries resizing the buffer to contain `count` elements. If T is a POD type
+ // the new elements may not be initialized.
+ FMT_CONSTEXPR void try_resize(size_t count) {
+ try_reserve(count);
+ size_ = count <= capacity_ ? count : capacity_;
+ }
+
+ // Tries increasing the buffer capacity to `new_capacity`. It can increase the
+ // capacity by a smaller amount than requested but guarantees there is space
+ // for at least one additional element either by increasing the capacity or by
+ // flushing the buffer if it is full.
+ FMT_CONSTEXPR void try_reserve(size_t new_capacity) {
+ if (new_capacity > capacity_) grow_(*this, new_capacity);
+ }
+
+ FMT_CONSTEXPR void push_back(const T& value) {
+ try_reserve(size_ + 1);
+ ptr_[size_++] = value;
+ }
+
+ /// Appends data to the end of the buffer.
+ template <typename U> void append(const U* begin, const U* end) {
+ while (begin != end) {
+ auto count = to_unsigned(end - begin);
+ try_reserve(size_ + count);
+ auto free_cap = capacity_ - size_;
+ if (free_cap < count) count = free_cap;
+ // A loop is faster than memcpy on small sizes.
+ T* out = ptr_ + size_;
+ for (size_t i = 0; i < count; ++i) out[i] = begin[i];
+ size_ += count;
+ begin += count;
+ }
+ }
+
+ template <typename Idx> FMT_CONSTEXPR auto operator[](Idx index) -> T& {
+ return ptr_[index];
+ }
+ template <typename Idx>
+ FMT_CONSTEXPR auto operator[](Idx index) const -> const T& {
+ return ptr_[index];
+ }
+};
+
+struct buffer_traits {
+ explicit buffer_traits(size_t) {}
+ auto count() const -> size_t { return 0; }
+ auto limit(size_t size) -> size_t { return size; }
+};
+
+class fixed_buffer_traits {
+ private:
+ size_t count_ = 0;
+ size_t limit_;
+
+ public:
+ explicit fixed_buffer_traits(size_t limit) : limit_(limit) {}
+ auto count() const -> size_t { return count_; }
+ auto limit(size_t size) -> size_t {
+ size_t n = limit_ > count_ ? limit_ - count_ : 0;
+ count_ += size;
+ return size < n ? size : n;
+ }
+};
+
+// A buffer that writes to an output iterator when flushed.
+template <typename OutputIt, typename T, typename Traits = buffer_traits>
+class iterator_buffer : public Traits, public buffer<T> {
+ private:
+ OutputIt out_;
+ enum { buffer_size = 256 };
+ T data_[buffer_size];
+
+ static FMT_CONSTEXPR void grow(buffer<T>& buf, size_t) {
+ if (buf.size() == buffer_size) static_cast<iterator_buffer&>(buf).flush();
+ }
+
+ void flush() {
+ auto size = this->size();
+ this->clear();
+ const T* begin = data_;
+ const T* end = begin + this->limit(size);
+ while (begin != end) *out_++ = *begin++;
+ }
+
+ public:
+ explicit iterator_buffer(OutputIt out, size_t n = buffer_size)
+ : Traits(n), buffer<T>(grow, data_, 0, buffer_size), out_(out) {}
+ iterator_buffer(iterator_buffer&& other) noexcept
+ : Traits(other),
+ buffer<T>(grow, data_, 0, buffer_size),
+ out_(other.out_) {}
+ ~iterator_buffer() {
+ // Don't crash if flush fails during unwinding.
+ FMT_TRY { flush(); }
+ FMT_CATCH(...) {}
+ }
+
+ auto out() -> OutputIt {
+ flush();
+ return out_;
+ }
+ auto count() const -> size_t { return Traits::count() + this->size(); }
+};
+
+template <typename T>
+class iterator_buffer<T*, T, fixed_buffer_traits> : public fixed_buffer_traits,
+ public buffer<T> {
+ private:
+ T* out_;
+ enum { buffer_size = 256 };
+ T data_[buffer_size];
+
+ static FMT_CONSTEXPR void grow(buffer<T>& buf, size_t) {
+ if (buf.size() == buf.capacity())
+ static_cast<iterator_buffer&>(buf).flush();
+ }
+
+ void flush() {
+ size_t n = this->limit(this->size());
+ if (this->data() == out_) {
+ out_ += n;
+ this->set(data_, buffer_size);
+ }
+ this->clear();
+ }
+
+ public:
+ explicit iterator_buffer(T* out, size_t n = buffer_size)
+ : fixed_buffer_traits(n), buffer<T>(grow, out, 0, n), out_(out) {}
+ iterator_buffer(iterator_buffer&& other) noexcept
+ : fixed_buffer_traits(other),
+ buffer<T>(static_cast<iterator_buffer&&>(other)),
+ out_(other.out_) {
+ if (this->data() != out_) {
+ this->set(data_, buffer_size);
+ this->clear();
+ }
+ }
+ ~iterator_buffer() { flush(); }
+
+ auto out() -> T* {
+ flush();
+ return out_;
+ }
+ auto count() const -> size_t {
+ return fixed_buffer_traits::count() + this->size();
+ }
+};
+
+template <typename T> class iterator_buffer<T*, T> : public buffer<T> {
+ public:
+ explicit iterator_buffer(T* out, size_t = 0)
+ : buffer<T>([](buffer<T>&, size_t) {}, out, 0, ~size_t()) {}
+
+ auto out() -> T* { return &*this->end(); }
+};
+
+// A buffer that writes to a container with the contiguous storage.
+template <typename OutputIt>
+class iterator_buffer<
+ OutputIt,
+ enable_if_t<detail::is_back_insert_iterator<OutputIt>::value &&
+ is_contiguous<typename OutputIt::container_type>::value,
+ typename OutputIt::container_type::value_type>>
+ : public buffer<typename OutputIt::container_type::value_type> {
+ private:
+ using container_type = typename OutputIt::container_type;
+ using value_type = typename container_type::value_type;
+ container_type& container_;
+
+ static FMT_CONSTEXPR void grow(buffer<value_type>& buf, size_t capacity) {
+ auto& self = static_cast<iterator_buffer&>(buf);
+ self.container_.resize(capacity);
+ self.set(&self.container_[0], capacity);
+ }
+
+ public:
+ explicit iterator_buffer(container_type& c)
+ : buffer<value_type>(grow, c.size()), container_(c) {}
+ explicit iterator_buffer(OutputIt out, size_t = 0)
+ : iterator_buffer(get_container(out)) {}
+
+ auto out() -> OutputIt { return back_inserter(container_); }
+};
+
+// A buffer that counts the number of code units written discarding the output.
+template <typename T = char> class counting_buffer : public buffer<T> {
+ private:
+ enum { buffer_size = 256 };
+ T data_[buffer_size];
+ size_t count_ = 0;
+
+ static FMT_CONSTEXPR void grow(buffer<T>& buf, size_t) {
+ if (buf.size() != buffer_size) return;
+ static_cast<counting_buffer&>(buf).count_ += buf.size();
+ buf.clear();
+ }
+
+ public:
+ counting_buffer() : buffer<T>(grow, data_, 0, buffer_size) {}
+
+ auto count() -> size_t { return count_ + this->size(); }
+};
+} // namespace detail
+
+template <typename Char>
+FMT_CONSTEXPR void basic_format_parse_context<Char>::do_check_arg_id(int id) {
+ // Argument id is only checked at compile-time during parsing because
+ // formatting has its own validation.
+ if (detail::is_constant_evaluated() &&
+ (!FMT_GCC_VERSION || FMT_GCC_VERSION >= 1200)) {
+ using context = detail::compile_parse_context<Char>;
+ if (id >= static_cast<context*>(this)->num_args())
+ report_error("argument not found");
+ }
+}
+
+template <typename Char>
+FMT_CONSTEXPR void basic_format_parse_context<Char>::check_dynamic_spec(
+ int arg_id) {
+ if (detail::is_constant_evaluated() &&
+ (!FMT_GCC_VERSION || FMT_GCC_VERSION >= 1200)) {
+ using context = detail::compile_parse_context<Char>;
+ static_cast<context*>(this)->check_dynamic_spec(arg_id);
+ }
+}
+
+FMT_EXPORT template <typename Context> class basic_format_arg;
+FMT_EXPORT template <typename Context> class basic_format_args;
+FMT_EXPORT template <typename Context> class dynamic_format_arg_store;
+
+// A formatter for objects of type T.
+FMT_EXPORT
+template <typename T, typename Char = char, typename Enable = void>
+struct formatter {
+ // A deleted default constructor indicates a disabled formatter.
+ formatter() = delete;
+};
+
+// Specifies if T has an enabled formatter specialization. A type can be
+// formattable even if it doesn't have a formatter e.g. via a conversion.
+template <typename T, typename Context>
+using has_formatter =
+ std::is_constructible<typename Context::template formatter_type<T>>;
+
+// An output iterator that appends to a buffer. It is used instead of
+// back_insert_iterator to reduce symbol sizes and avoid <iterator> dependency.
+template <typename T> class basic_appender {
+ private:
+ detail::buffer<T>* buffer_;
+
+ friend auto get_container(basic_appender app) -> detail::buffer<T>& {
+ return *app.buffer_;
+ }
+
+ public:
+ using iterator_category = int;
+ using value_type = T;
+ using difference_type = ptrdiff_t;
+ using pointer = T*;
+ using reference = T&;
+ using container_type = detail::buffer<T>;
+ FMT_UNCHECKED_ITERATOR(basic_appender);
+
+ FMT_CONSTEXPR basic_appender(detail::buffer<T>& buf) : buffer_(&buf) {}
+
+ auto operator=(T c) -> basic_appender& {
+ buffer_->push_back(c);
+ return *this;
+ }
+ auto operator*() -> basic_appender& { return *this; }
+ auto operator++() -> basic_appender& { return *this; }
+ auto operator++(int) -> basic_appender { return *this; }
+};
+
+using appender = basic_appender<char>;
+
+namespace detail {
+template <typename T>
+struct is_back_insert_iterator<basic_appender<T>> : std::true_type {};
+
+template <typename T, typename Enable = void>
+struct locking : std::true_type {};
+template <typename T>
+struct locking<T, void_t<typename formatter<remove_cvref_t<T>>::nonlocking>>
+ : std::false_type {};
+
+template <typename T = int> FMT_CONSTEXPR inline auto is_locking() -> bool {
+ return locking<T>::value;
+}
+template <typename T1, typename T2, typename... Tail>
+FMT_CONSTEXPR inline auto is_locking() -> bool {
+ return locking<T1>::value || is_locking<T2, Tail...>();
+}
+
+// An optimized version of std::copy with the output value type (T).
+template <typename T, typename InputIt, typename OutputIt,
+ FMT_ENABLE_IF(is_back_insert_iterator<OutputIt>::value)>
+auto copy(InputIt begin, InputIt end, OutputIt out) -> OutputIt {
+ get_container(out).append(begin, end);
+ return out;
+}
+
+template <typename T, typename InputIt, typename OutputIt,
+ FMT_ENABLE_IF(!is_back_insert_iterator<OutputIt>::value)>
+FMT_CONSTEXPR auto copy(InputIt begin, InputIt end, OutputIt out) -> OutputIt {
+ while (begin != end) *out++ = static_cast<T>(*begin++);
+ return out;
+}
+
+template <typename T, typename V, typename OutputIt>
+FMT_CONSTEXPR auto copy(basic_string_view<V> s, OutputIt out) -> OutputIt {
+ return copy<T>(s.begin(), s.end(), out);
+}
+
+template <typename Context, typename T>
+constexpr auto has_const_formatter_impl(T*)
+ -> decltype(typename Context::template formatter_type<T>().format(
+ std::declval<const T&>(), std::declval<Context&>()),
+ true) {
+ return true;
+}
+template <typename Context>
+constexpr auto has_const_formatter_impl(...) -> bool {
+ return false;
+}
+template <typename T, typename Context>
+constexpr auto has_const_formatter() -> bool {
+ return has_const_formatter_impl<Context>(static_cast<T*>(nullptr));
+}
+
+template <typename It, typename Enable = std::true_type>
+struct is_buffer_appender : std::false_type {};
+template <typename It>
+struct is_buffer_appender<
+ It, bool_constant<
+ is_back_insert_iterator<It>::value &&
+ std::is_base_of<buffer<typename It::container_type::value_type>,
+ typename It::container_type>::value>>
+ : std::true_type {};
+
+// Maps an output iterator to a buffer.
+template <typename T, typename OutputIt,
+ FMT_ENABLE_IF(!is_buffer_appender<OutputIt>::value)>
+auto get_buffer(OutputIt out) -> iterator_buffer<OutputIt, T> {
+ return iterator_buffer<OutputIt, T>(out);
+}
+template <typename T, typename OutputIt,
+ FMT_ENABLE_IF(is_buffer_appender<OutputIt>::value)>
+auto get_buffer(OutputIt out) -> buffer<T>& {
+ return get_container(out);
+}
+
+template <typename Buf, typename OutputIt>
+auto get_iterator(Buf& buf, OutputIt) -> decltype(buf.out()) {
+ return buf.out();
+}
+template <typename T, typename OutputIt>
+auto get_iterator(buffer<T>&, OutputIt out) -> OutputIt {
+ return out;
+}
+
+struct view {};
+
+template <typename Char, typename T> struct named_arg : view {
+ const Char* name;
+ const T& value;
+ named_arg(const Char* n, const T& v) : name(n), value(v) {}
+};
+
+template <typename Char> struct named_arg_info {
+ const Char* name;
+ int id;
+};
+
+template <typename T> struct is_named_arg : std::false_type {};
+template <typename T> struct is_statically_named_arg : std::false_type {};
+
+template <typename T, typename Char>
+struct is_named_arg<named_arg<Char, T>> : std::true_type {};
+
+template <bool B = false> constexpr auto count() -> size_t { return B ? 1 : 0; }
+template <bool B1, bool B2, bool... Tail> constexpr auto count() -> size_t {
+ return (B1 ? 1 : 0) + count<B2, Tail...>();
+}
+
+template <typename... Args> constexpr auto count_named_args() -> size_t {
+ return count<is_named_arg<Args>::value...>();
+}
+
+template <typename... Args>
+constexpr auto count_statically_named_args() -> size_t {
+ return count<is_statically_named_arg<Args>::value...>();
+}
+
+struct unformattable {};
+struct unformattable_char : unformattable {};
+struct unformattable_pointer : unformattable {};
+
+template <typename Char> struct string_value {
+ const Char* data;
+ size_t size;
+};
+
+template <typename Char> struct named_arg_value {
+ const named_arg_info<Char>* data;
+ size_t size;
+};
+
+template <typename Context> struct custom_value {
+ using parse_context = typename Context::parse_context_type;
+ void* value;
+ void (*format)(void* arg, parse_context& parse_ctx, Context& ctx);
+};
+
+// A formatting argument value.
+template <typename Context> class value {
+ public:
+ using char_type = typename Context::char_type;
+
+ union {
+ monostate no_value;
+ int int_value;
+ unsigned uint_value;
+ long long long_long_value;
+ unsigned long long ulong_long_value;
+ int128_opt int128_value;
+ uint128_opt uint128_value;
+ bool bool_value;
+ char_type char_value;
+ float float_value;
+ double double_value;
+ long double long_double_value;
+ const void* pointer;
+ string_value<char_type> string;
+ custom_value<Context> custom;
+ named_arg_value<char_type> named_args;
+ };
+
+ constexpr FMT_ALWAYS_INLINE value() : no_value() {}
+ constexpr FMT_ALWAYS_INLINE value(int val) : int_value(val) {}
+ constexpr FMT_ALWAYS_INLINE value(unsigned val) : uint_value(val) {}
+ constexpr FMT_ALWAYS_INLINE value(long long val) : long_long_value(val) {}
+ constexpr FMT_ALWAYS_INLINE value(unsigned long long val)
+ : ulong_long_value(val) {}
+ FMT_ALWAYS_INLINE value(int128_opt val) : int128_value(val) {}
+ FMT_ALWAYS_INLINE value(uint128_opt val) : uint128_value(val) {}
+ constexpr FMT_ALWAYS_INLINE value(float val) : float_value(val) {}
+ constexpr FMT_ALWAYS_INLINE value(double val) : double_value(val) {}
+ FMT_ALWAYS_INLINE value(long double val) : long_double_value(val) {}
+ constexpr FMT_ALWAYS_INLINE value(bool val) : bool_value(val) {}
+ constexpr FMT_ALWAYS_INLINE value(char_type val) : char_value(val) {}
+ FMT_CONSTEXPR FMT_ALWAYS_INLINE value(const char_type* val) {
+ string.data = val;
+ if (is_constant_evaluated()) string.size = {};
+ }
+ FMT_CONSTEXPR FMT_ALWAYS_INLINE value(basic_string_view<char_type> val) {
+ string.data = val.data();
+ string.size = val.size();
+ }
+ FMT_ALWAYS_INLINE value(const void* val) : pointer(val) {}
+ FMT_ALWAYS_INLINE value(const named_arg_info<char_type>* args, size_t size)
+ : named_args{args, size} {}
+
+ template <typename T> FMT_CONSTEXPR20 FMT_ALWAYS_INLINE value(T& val) {
+ using value_type = remove_const_t<T>;
+ // T may overload operator& e.g. std::vector<bool>::reference in libc++.
+#if defined(__cpp_if_constexpr)
+ if constexpr (std::is_same<decltype(&val), T*>::value)
+ custom.value = const_cast<value_type*>(&val);
+#endif
+ if (!is_constant_evaluated())
+ custom.value = const_cast<char*>(&reinterpret_cast<const char&>(val));
+ // Get the formatter type through the context to allow different contexts
+ // have different extension points, e.g. `formatter<T>` for `format` and
+ // `printf_formatter<T>` for `printf`.
+ custom.format = format_custom_arg<
+ value_type, typename Context::template formatter_type<value_type>>;
+ }
+ value(unformattable);
+ value(unformattable_char);
+ value(unformattable_pointer);
+
+ private:
+ // Formats an argument of a custom type, such as a user-defined class.
+ template <typename T, typename Formatter>
+ static void format_custom_arg(void* arg,
+ typename Context::parse_context_type& parse_ctx,
+ Context& ctx) {
+ auto f = Formatter();
+ parse_ctx.advance_to(f.parse(parse_ctx));
+ using qualified_type =
+ conditional_t<has_const_formatter<T, Context>(), const T, T>;
+ // format must be const for compatibility with std::format and compilation.
+ const auto& cf = f;
+ ctx.advance_to(cf.format(*static_cast<qualified_type*>(arg), ctx));
+ }
+};
+
+// To minimize the number of types we need to deal with, long is translated
+// either to int or to long long depending on its size.
+enum { long_short = sizeof(long) == sizeof(int) };
+using long_type = conditional_t<long_short, int, long long>;
+using ulong_type = conditional_t<long_short, unsigned, unsigned long long>;
+
+template <typename T> struct format_as_result {
+ template <typename U,
+ FMT_ENABLE_IF(std::is_enum<U>::value || std::is_class<U>::value)>
+ static auto map(U*) -> remove_cvref_t<decltype(format_as(std::declval<U>()))>;
+ static auto map(...) -> void;
+
+ using type = decltype(map(static_cast<T*>(nullptr)));
+};
+template <typename T> using format_as_t = typename format_as_result<T>::type;
+
+template <typename T>
+struct has_format_as
+ : bool_constant<!std::is_same<format_as_t<T>, void>::value> {};
+
+#define FMT_MAP_API FMT_CONSTEXPR FMT_ALWAYS_INLINE
+
+// Maps formatting arguments to core types.
+// arg_mapper reports errors by returning unformattable instead of using
+// static_assert because it's used in the is_formattable trait.
+template <typename Context> struct arg_mapper {
+ using char_type = typename Context::char_type;
+
+ FMT_MAP_API auto map(signed char val) -> int { return val; }
+ FMT_MAP_API auto map(unsigned char val) -> unsigned { return val; }
+ FMT_MAP_API auto map(short val) -> int { return val; }
+ FMT_MAP_API auto map(unsigned short val) -> unsigned { return val; }
+ FMT_MAP_API auto map(int val) -> int { return val; }
+ FMT_MAP_API auto map(unsigned val) -> unsigned { return val; }
+ FMT_MAP_API auto map(long val) -> long_type { return val; }
+ FMT_MAP_API auto map(unsigned long val) -> ulong_type { return val; }
+ FMT_MAP_API auto map(long long val) -> long long { return val; }
+ FMT_MAP_API auto map(unsigned long long val) -> unsigned long long {
+ return val;
+ }
+ FMT_MAP_API auto map(int128_opt val) -> int128_opt { return val; }
+ FMT_MAP_API auto map(uint128_opt val) -> uint128_opt { return val; }
+ FMT_MAP_API auto map(bool val) -> bool { return val; }
+
+ template <typename T, FMT_ENABLE_IF(std::is_same<T, char>::value ||
+ std::is_same<T, char_type>::value)>
+ FMT_MAP_API auto map(T val) -> char_type {
+ return val;
+ }
+ template <typename T, enable_if_t<(std::is_same<T, wchar_t>::value ||
+#ifdef __cpp_char8_t
+ std::is_same<T, char8_t>::value ||
+#endif
+ std::is_same<T, char16_t>::value ||
+ std::is_same<T, char32_t>::value) &&
+ !std::is_same<T, char_type>::value,
+ int> = 0>
+ FMT_MAP_API auto map(T) -> unformattable_char {
+ return {};
+ }
+
+ FMT_MAP_API auto map(float val) -> float { return val; }
+ FMT_MAP_API auto map(double val) -> double { return val; }
+ FMT_MAP_API auto map(long double val) -> long double { return val; }
+
+ FMT_MAP_API auto map(char_type* val) -> const char_type* { return val; }
+ FMT_MAP_API auto map(const char_type* val) -> const char_type* { return val; }
+ template <typename T, typename Char = char_t<T>,
+ FMT_ENABLE_IF(std::is_same<Char, char_type>::value &&
+ !std::is_pointer<T>::value)>
+ FMT_MAP_API auto map(const T& val) -> basic_string_view<Char> {
+ return to_string_view(val);
+ }
+ template <typename T, typename Char = char_t<T>,
+ FMT_ENABLE_IF(!std::is_same<Char, char_type>::value &&
+ !std::is_pointer<T>::value)>
+ FMT_MAP_API auto map(const T&) -> unformattable_char {
+ return {};
+ }
+
+ FMT_MAP_API auto map(void* val) -> const void* { return val; }
+ FMT_MAP_API auto map(const void* val) -> const void* { return val; }
+ FMT_MAP_API auto map(volatile void* val) -> const void* {
+ return const_cast<const void*>(val);
+ }
+ FMT_MAP_API auto map(const volatile void* val) -> const void* {
+ return const_cast<const void*>(val);
+ }
+ FMT_MAP_API auto map(std::nullptr_t val) -> const void* { return val; }
+
+ // Use SFINAE instead of a const T* parameter to avoid a conflict with the
+ // array overload.
+ template <
+ typename T,
+ FMT_ENABLE_IF(
+ std::is_pointer<T>::value || std::is_member_pointer<T>::value ||
+ std::is_function<typename std::remove_pointer<T>::type>::value ||
+ (std::is_array<T>::value &&
+ !std::is_convertible<T, const char_type*>::value))>
+ FMT_CONSTEXPR auto map(const T&) -> unformattable_pointer {
+ return {};
+ }
+
+ template <typename T, std::size_t N,
+ FMT_ENABLE_IF(!std::is_same<T, wchar_t>::value)>
+ FMT_MAP_API auto map(const T (&values)[N]) -> const T (&)[N] {
+ return values;
+ }
+
+ // Only map owning types because mapping views can be unsafe.
+ template <typename T, typename U = format_as_t<T>,
+ FMT_ENABLE_IF(std::is_arithmetic<U>::value)>
+ FMT_MAP_API auto map(const T& val) -> decltype(FMT_DECLTYPE_THIS map(U())) {
+ return map(format_as(val));
+ }
+
+ template <typename T, typename U = remove_const_t<T>>
+ struct formattable : bool_constant<has_const_formatter<U, Context>() ||
+ (has_formatter<U, Context>::value &&
+ !std::is_const<T>::value)> {};
+
+ template <typename T, FMT_ENABLE_IF(formattable<T>::value)>
+ FMT_MAP_API auto do_map(T& val) -> T& {
+ return val;
+ }
+ template <typename T, FMT_ENABLE_IF(!formattable<T>::value)>
+ FMT_MAP_API auto do_map(T&) -> unformattable {
+ return {};
+ }
+
+ // is_fundamental is used to allow formatters for extended FP types.
+ template <typename T, typename U = remove_const_t<T>,
+ FMT_ENABLE_IF(
+ (std::is_class<U>::value || std::is_enum<U>::value ||
+ std::is_union<U>::value || std::is_fundamental<U>::value) &&
+ !has_to_string_view<U>::value && !is_char<U>::value &&
+ !is_named_arg<U>::value && !std::is_integral<U>::value &&
+ !std::is_arithmetic<format_as_t<U>>::value)>
+ FMT_MAP_API auto map(T& val) -> decltype(FMT_DECLTYPE_THIS do_map(val)) {
+ return do_map(val);
+ }
+
+ template <typename T, FMT_ENABLE_IF(is_named_arg<T>::value)>
+ FMT_MAP_API auto map(const T& named_arg)
+ -> decltype(FMT_DECLTYPE_THIS map(named_arg.value)) {
+ return map(named_arg.value);
+ }
+
+ auto map(...) -> unformattable { return {}; }
+};
+
+// A type constant after applying arg_mapper<Context>.
+template <typename T, typename Context>
+using mapped_type_constant =
+ type_constant<decltype(arg_mapper<Context>().map(std::declval<const T&>())),
+ typename Context::char_type>;
+
+enum { packed_arg_bits = 4 };
+// Maximum number of arguments with packed types.
+enum { max_packed_args = 62 / packed_arg_bits };
+enum : unsigned long long { is_unpacked_bit = 1ULL << 63 };
+enum : unsigned long long { has_named_args_bit = 1ULL << 62 };
+
+template <typename It, typename T, typename Enable = void>
+struct is_output_iterator : std::false_type {};
+
+template <> struct is_output_iterator<appender, char> : std::true_type {};
+
+template <typename It, typename T>
+struct is_output_iterator<
+ It, T, void_t<decltype(*std::declval<It&>()++ = std::declval<T>())>>
+ : std::true_type {};
+
+// A type-erased reference to an std::locale to avoid a heavy <locale> include.
+class locale_ref {
+ private:
+ const void* locale_; // A type-erased pointer to std::locale.
+
+ public:
+ constexpr locale_ref() : locale_(nullptr) {}
+ template <typename Locale> explicit locale_ref(const Locale& loc);
+
+ explicit operator bool() const noexcept { return locale_ != nullptr; }
+
+ template <typename Locale> auto get() const -> Locale;
+};
+
+template <typename> constexpr auto encode_types() -> unsigned long long {
+ return 0;
+}
+
+template <typename Context, typename Arg, typename... Args>
+constexpr auto encode_types() -> unsigned long long {
+ return static_cast<unsigned>(mapped_type_constant<Arg, Context>::value) |
+ (encode_types<Context, Args...>() << packed_arg_bits);
+}
+
+template <typename Context, typename... T, size_t NUM_ARGS = sizeof...(T)>
+constexpr unsigned long long make_descriptor() {
+ return NUM_ARGS <= max_packed_args ? encode_types<Context, T...>()
+ : is_unpacked_bit | NUM_ARGS;
+}
+
+// This type is intentionally undefined, only used for errors.
+template <typename T, typename Char>
+#if FMT_CLANG_VERSION && FMT_CLANG_VERSION <= 1500
+// https://github.com/fmtlib/fmt/issues/3796
+struct type_is_unformattable_for {
+};
+#else
+struct type_is_unformattable_for;
+#endif
+
+template <bool PACKED, typename Context, typename T, FMT_ENABLE_IF(PACKED)>
+FMT_CONSTEXPR auto make_arg(T& val) -> value<Context> {
+ using arg_type = remove_cvref_t<decltype(arg_mapper<Context>().map(val))>;
+
+ // Use enum instead of constexpr because the latter may generate code.
+ enum {
+ formattable_char = !std::is_same<arg_type, unformattable_char>::value
+ };
+ static_assert(formattable_char, "Mixing character types is disallowed.");
+
+ // Formatting of arbitrary pointers is disallowed. If you want to format a
+ // pointer cast it to `void*` or `const void*`. In particular, this forbids
+ // formatting of `[const] volatile char*` printed as bool by iostreams.
+ enum {
+ formattable_pointer = !std::is_same<arg_type, unformattable_pointer>::value
+ };
+ static_assert(formattable_pointer,
+ "Formatting of non-void pointers is disallowed.");
+
+ enum { formattable = !std::is_same<arg_type, unformattable>::value };
+#if defined(__cpp_if_constexpr)
+ if constexpr (!formattable)
+ type_is_unformattable_for<T, typename Context::char_type> _;
+#endif
+ static_assert(
+ formattable,
+ "Cannot format an argument. To make type T formattable provide a "
+ "formatter<T> specialization: https://fmt.dev/latest/api.html#udt");
+ return {arg_mapper<Context>().map(val)};
+}
+
+template <typename Context, typename T>
+FMT_CONSTEXPR auto make_arg(T& val) -> basic_format_arg<Context> {
+ auto arg = basic_format_arg<Context>();
+ arg.type_ = mapped_type_constant<T, Context>::value;
+ arg.value_ = make_arg<true, Context>(val);
+ return arg;
+}
+
+template <bool PACKED, typename Context, typename T, FMT_ENABLE_IF(!PACKED)>
+FMT_CONSTEXPR inline auto make_arg(T& val) -> basic_format_arg<Context> {
+ return make_arg<Context>(val);
+}
+
+template <typename Context, size_t NUM_ARGS>
+using arg_t = conditional_t<NUM_ARGS <= max_packed_args, value<Context>,
+ basic_format_arg<Context>>;
+
+template <typename Char, typename T, FMT_ENABLE_IF(!is_named_arg<T>::value)>
+void init_named_arg(named_arg_info<Char>*, int& arg_index, int&, const T&) {
+ ++arg_index;
+}
+template <typename Char, typename T, FMT_ENABLE_IF(is_named_arg<T>::value)>
+void init_named_arg(named_arg_info<Char>* named_args, int& arg_index,
+ int& named_arg_index, const T& arg) {
+ named_args[named_arg_index++] = {arg.name, arg_index++};
+}
+
+// An array of references to arguments. It can be implicitly converted to
+// `fmt::basic_format_args` for passing into type-erased formatting functions
+// such as `fmt::vformat`.
+template <typename Context, size_t NUM_ARGS, size_t NUM_NAMED_ARGS,
+ unsigned long long DESC>
+struct format_arg_store {
+ // args_[0].named_args points to named_args to avoid bloating format_args.
+ // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning.
+ static constexpr size_t ARGS_ARR_SIZE = 1 + (NUM_ARGS != 0 ? NUM_ARGS : +1);
+
+ arg_t<Context, NUM_ARGS> args[ARGS_ARR_SIZE];
+ named_arg_info<typename Context::char_type> named_args[NUM_NAMED_ARGS];
+
+ template <typename... T>
+ FMT_MAP_API format_arg_store(T&... values)
+ : args{{named_args, NUM_NAMED_ARGS},
+ make_arg<NUM_ARGS <= max_packed_args, Context>(values)...} {
+ using dummy = int[];
+ int arg_index = 0, named_arg_index = 0;
+ (void)dummy{
+ 0,
+ (init_named_arg(named_args, arg_index, named_arg_index, values), 0)...};
+ }
+
+ format_arg_store(format_arg_store&& rhs) {
+ args[0] = {named_args, NUM_NAMED_ARGS};
+ for (size_t i = 1; i < ARGS_ARR_SIZE; ++i) args[i] = rhs.args[i];
+ for (size_t i = 0; i < NUM_NAMED_ARGS; ++i)
+ named_args[i] = rhs.named_args[i];
+ }
+
+ format_arg_store(const format_arg_store& rhs) = delete;
+ format_arg_store& operator=(const format_arg_store& rhs) = delete;
+ format_arg_store& operator=(format_arg_store&& rhs) = delete;
+};
+
+// A specialization of format_arg_store without named arguments.
+// It is a plain struct to reduce binary size in debug mode.
+template <typename Context, size_t NUM_ARGS, unsigned long long DESC>
+struct format_arg_store<Context, NUM_ARGS, 0, DESC> {
+ // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning.
+ arg_t<Context, NUM_ARGS> args[NUM_ARGS != 0 ? NUM_ARGS : +1];
+};
+
+} // namespace detail
+FMT_BEGIN_EXPORT
+
+// A formatting argument. Context is a template parameter for the compiled API
+// where output can be unbuffered.
+template <typename Context> class basic_format_arg {
+ private:
+ detail::value<Context> value_;
+ detail::type type_;
+
+ template <typename ContextType, typename T>
+ friend FMT_CONSTEXPR auto detail::make_arg(T& value)
+ -> basic_format_arg<ContextType>;
+
+ friend class basic_format_args<Context>;
+ friend class dynamic_format_arg_store<Context>;
+
+ using char_type = typename Context::char_type;
+
+ template <typename, size_t, size_t, unsigned long long>
+ friend struct detail::format_arg_store;
+
+ basic_format_arg(const detail::named_arg_info<char_type>* args, size_t size)
+ : value_(args, size) {}
+
+ public:
+ class handle {
+ public:
+ explicit handle(detail::custom_value<Context> custom) : custom_(custom) {}
+
+ void format(typename Context::parse_context_type& parse_ctx,
+ Context& ctx) const {
+ custom_.format(custom_.value, parse_ctx, ctx);
+ }
+
+ private:
+ detail::custom_value<Context> custom_;
+ };
+
+ constexpr basic_format_arg() : type_(detail::type::none_type) {}
+
+ constexpr explicit operator bool() const noexcept {
+ return type_ != detail::type::none_type;
+ }
+
+ auto type() const -> detail::type { return type_; }
+
+ auto is_integral() const -> bool { return detail::is_integral_type(type_); }
+ auto is_arithmetic() const -> bool {
+ return detail::is_arithmetic_type(type_);
+ }
+
+ /**
+ * Visits an argument dispatching to the appropriate visit method based on
+ * the argument type. For example, if the argument type is `double` then
+ * `vis(value)` will be called with the value of type `double`.
+ */
+ template <typename Visitor>
+ FMT_CONSTEXPR FMT_INLINE auto visit(Visitor&& vis) const -> decltype(vis(0)) {
+ switch (type_) {
+ case detail::type::none_type:
+ break;
+ case detail::type::int_type:
+ return vis(value_.int_value);
+ case detail::type::uint_type:
+ return vis(value_.uint_value);
+ case detail::type::long_long_type:
+ return vis(value_.long_long_value);
+ case detail::type::ulong_long_type:
+ return vis(value_.ulong_long_value);
+ case detail::type::int128_type:
+ return vis(detail::convert_for_visit(value_.int128_value));
+ case detail::type::uint128_type:
+ return vis(detail::convert_for_visit(value_.uint128_value));
+ case detail::type::bool_type:
+ return vis(value_.bool_value);
+ case detail::type::char_type:
+ return vis(value_.char_value);
+ case detail::type::float_type:
+ return vis(value_.float_value);
+ case detail::type::double_type:
+ return vis(value_.double_value);
+ case detail::type::long_double_type:
+ return vis(value_.long_double_value);
+ case detail::type::cstring_type:
+ return vis(value_.string.data);
+ case detail::type::string_type:
+ using sv = basic_string_view<typename Context::char_type>;
+ return vis(sv(value_.string.data, value_.string.size));
+ case detail::type::pointer_type:
+ return vis(value_.pointer);
+ case detail::type::custom_type:
+ return vis(typename basic_format_arg<Context>::handle(value_.custom));
+ }
+ return vis(monostate());
+ }
+
+ auto format_custom(const char_type* parse_begin,
+ typename Context::parse_context_type& parse_ctx,
+ Context& ctx) -> bool {
+ if (type_ != detail::type::custom_type) return false;
+ parse_ctx.advance_to(parse_begin);
+ value_.custom.format(value_.custom.value, parse_ctx, ctx);
+ return true;
+ }
+};
+
+template <typename Visitor, typename Context>
+FMT_DEPRECATED FMT_CONSTEXPR auto visit_format_arg(
+ Visitor&& vis, const basic_format_arg<Context>& arg) -> decltype(vis(0)) {
+ return arg.visit(static_cast<Visitor&&>(vis));
+}
+
+/**
+ * A view of a collection of formatting arguments. To avoid lifetime issues it
+ * should only be used as a parameter type in type-erased functions such as
+ * `vformat`:
+ *
+ * void vlog(fmt::string_view fmt, fmt::format_args args); // OK
+ * fmt::format_args args = fmt::make_format_args(); // Dangling reference
+ */
+template <typename Context> class basic_format_args {
+ public:
+ using size_type = int;
+ using format_arg = basic_format_arg<Context>;
+
+ private:
+ // A descriptor that contains information about formatting arguments.
+ // If the number of arguments is less or equal to max_packed_args then
+ // argument types are passed in the descriptor. This reduces binary code size
+ // per formatting function call.
+ unsigned long long desc_;
+ union {
+ // If is_packed() returns true then argument values are stored in values_;
+ // otherwise they are stored in args_. This is done to improve cache
+ // locality and reduce compiled code size since storing larger objects
+ // may require more code (at least on x86-64) even if the same amount of
+ // data is actually copied to stack. It saves ~10% on the bloat test.
+ const detail::value<Context>* values_;
+ const format_arg* args_;
+ };
+
+ constexpr auto is_packed() const -> bool {
+ return (desc_ & detail::is_unpacked_bit) == 0;
+ }
+ constexpr auto has_named_args() const -> bool {
+ return (desc_ & detail::has_named_args_bit) != 0;
+ }
+
+ FMT_CONSTEXPR auto type(int index) const -> detail::type {
+ int shift = index * detail::packed_arg_bits;
+ unsigned int mask = (1 << detail::packed_arg_bits) - 1;
+ return static_cast<detail::type>((desc_ >> shift) & mask);
+ }
+
+ public:
+ constexpr basic_format_args() : desc_(0), args_(nullptr) {}
+
+ /// Constructs a `basic_format_args` object from `format_arg_store`.
+ template <size_t NUM_ARGS, size_t NUM_NAMED_ARGS, unsigned long long DESC,
+ FMT_ENABLE_IF(NUM_ARGS <= detail::max_packed_args)>
+ constexpr FMT_ALWAYS_INLINE basic_format_args(
+ const detail::format_arg_store<Context, NUM_ARGS, NUM_NAMED_ARGS, DESC>&
+ store)
+ : desc_(DESC), values_(store.args + (NUM_NAMED_ARGS != 0 ? 1 : 0)) {}
+
+ template <size_t NUM_ARGS, size_t NUM_NAMED_ARGS, unsigned long long DESC,
+ FMT_ENABLE_IF(NUM_ARGS > detail::max_packed_args)>
+ constexpr basic_format_args(
+ const detail::format_arg_store<Context, NUM_ARGS, NUM_NAMED_ARGS, DESC>&
+ store)
+ : desc_(DESC), args_(store.args + (NUM_NAMED_ARGS != 0 ? 1 : 0)) {}
+
+ /// Constructs a `basic_format_args` object from `dynamic_format_arg_store`.
+ constexpr basic_format_args(const dynamic_format_arg_store<Context>& store)
+ : desc_(store.get_types()), args_(store.data()) {}
+
+ /// Constructs a `basic_format_args` object from a dynamic list of arguments.
+ constexpr basic_format_args(const format_arg* args, int count)
+ : desc_(detail::is_unpacked_bit | detail::to_unsigned(count)),
+ args_(args) {}
+
+ /// Returns the argument with the specified id.
+ FMT_CONSTEXPR auto get(int id) const -> format_arg {
+ format_arg arg;
+ if (!is_packed()) {
+ if (id < max_size()) arg = args_[id];
+ return arg;
+ }
+ if (static_cast<unsigned>(id) >= detail::max_packed_args) return arg;
+ arg.type_ = type(id);
+ if (arg.type_ == detail::type::none_type) return arg;
+ arg.value_ = values_[id];
+ return arg;
+ }
+
+ template <typename Char>
+ auto get(basic_string_view<Char> name) const -> format_arg {
+ int id = get_id(name);
+ return id >= 0 ? get(id) : format_arg();
+ }
+
+ template <typename Char>
+ FMT_CONSTEXPR auto get_id(basic_string_view<Char> name) const -> int {
+ if (!has_named_args()) return -1;
+ const auto& named_args =
+ (is_packed() ? values_[-1] : args_[-1].value_).named_args;
+ for (size_t i = 0; i < named_args.size; ++i) {
+ if (named_args.data[i].name == name) return named_args.data[i].id;
+ }
+ return -1;
+ }
+
+ auto max_size() const -> int {
+ unsigned long long max_packed = detail::max_packed_args;
+ return static_cast<int>(is_packed() ? max_packed
+ : desc_ & ~detail::is_unpacked_bit);
+ }
+};
+
+// A formatting context.
+class context {
+ private:
+ appender out_;
+ basic_format_args<context> args_;
+ detail::locale_ref loc_;
+
+ public:
+ /// The character type for the output.
+ using char_type = char;
+
+ using iterator = appender;
+ using format_arg = basic_format_arg<context>;
+ using parse_context_type = basic_format_parse_context<char>;
+ template <typename T> using formatter_type = formatter<T, char>;
+
+ /// Constructs a `basic_format_context` object. References to the arguments
+ /// are stored in the object so make sure they have appropriate lifetimes.
+ FMT_CONSTEXPR context(iterator out, basic_format_args<context> ctx_args,
+ detail::locale_ref loc = {})
+ : out_(out), args_(ctx_args), loc_(loc) {}
+ context(context&&) = default;
+ context(const context&) = delete;
+ void operator=(const context&) = delete;
+
+ FMT_CONSTEXPR auto arg(int id) const -> format_arg { return args_.get(id); }
+ auto arg(string_view name) -> format_arg { return args_.get(name); }
+ FMT_CONSTEXPR auto arg_id(string_view name) -> int {
+ return args_.get_id(name);
+ }
+ auto args() const -> const basic_format_args<context>& { return args_; }
+
+ // Returns an iterator to the beginning of the output range.
+ FMT_CONSTEXPR auto out() -> iterator { return out_; }
+
+ // Advances the begin iterator to `it`.
+ void advance_to(iterator) {}
+
+ FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; }
+};
+
+template <typename OutputIt, typename Char> class generic_context;
+
+// Longer aliases for C++20 compatibility.
+template <typename OutputIt, typename Char>
+using basic_format_context =
+ conditional_t<std::is_same<OutputIt, appender>::value, context,
+ generic_context<OutputIt, Char>>;
+using format_context = context;
+
+template <typename Char>
+using buffered_context = basic_format_context<basic_appender<Char>, Char>;
+
+template <typename T, typename Char = char>
+using is_formattable = bool_constant<!std::is_base_of<
+ detail::unformattable, decltype(detail::arg_mapper<buffered_context<Char>>()
+ .map(std::declval<T&>()))>::value>;
+
+#if FMT_USE_CONCEPTS
+template <typename T, typename Char = char>
+concept formattable = is_formattable<remove_reference_t<T>, Char>::value;
+#endif
+
+/**
+ * Constructs an object that stores references to arguments and can be
+ * implicitly converted to `format_args`. `Context` can be omitted in which case
+ * it defaults to `format_context`. See `arg` for lifetime considerations.
+ */
+// Take arguments by lvalue references to avoid some lifetime issues, e.g.
+// auto args = make_format_args(std::string());
+template <typename Context = format_context, typename... T,
+ size_t NUM_ARGS = sizeof...(T),
+ size_t NUM_NAMED_ARGS = detail::count_named_args<T...>(),
+ unsigned long long DESC = detail::make_descriptor<Context, T...>(),
+ FMT_ENABLE_IF(NUM_NAMED_ARGS == 0)>
+constexpr FMT_ALWAYS_INLINE auto make_format_args(T&... args)
+ -> detail::format_arg_store<Context, NUM_ARGS, 0, DESC> {
+ return {{detail::make_arg<NUM_ARGS <= detail::max_packed_args, Context>(
+ args)...}};
+}
+
+#ifndef FMT_DOC
+template <typename Context = format_context, typename... T,
+ size_t NUM_NAMED_ARGS = detail::count_named_args<T...>(),
+ unsigned long long DESC =
+ detail::make_descriptor<Context, T...>() |
+ static_cast<unsigned long long>(detail::has_named_args_bit),
+ FMT_ENABLE_IF(NUM_NAMED_ARGS != 0)>
+constexpr auto make_format_args(T&... args)
+ -> detail::format_arg_store<Context, sizeof...(T), NUM_NAMED_ARGS, DESC> {
+ return {args...};
+}
+#endif
+
+/**
+ * Returns a named argument to be used in a formatting function.
+ * It should only be used in a call to a formatting function or
+ * `dynamic_format_arg_store::push_back`.
+ *
+ * **Example**:
+ *
+ * fmt::print("The answer is {answer}.", fmt::arg("answer", 42));
+ */
+template <typename Char, typename T>
+inline auto arg(const Char* name, const T& arg) -> detail::named_arg<Char, T> {
+ static_assert(!detail::is_named_arg<T>(), "nested named arguments");
+ return {name, arg};
+}
+FMT_END_EXPORT
+
+/// An alias for `basic_format_args<format_context>`.
+// A separate type would result in shorter symbols but break ABI compatibility
+// between clang and gcc on ARM (#1919).
+FMT_EXPORT using format_args = basic_format_args<format_context>;
+
+// We cannot use enum classes as bit fields because of a gcc bug, so we put them
+// in namespaces instead (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414).
+// Additionally, if an underlying type is specified, older gcc incorrectly warns
+// that the type is too small. Both bugs are fixed in gcc 9.3.
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 903
+# define FMT_ENUM_UNDERLYING_TYPE(type)
+#else
+# define FMT_ENUM_UNDERLYING_TYPE(type) : type
+#endif
+namespace align {
+enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, left, right, center,
+ numeric};
+}
+using align_t = align::type;
+namespace sign {
+enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, minus, plus, space};
+}
+using sign_t = sign::type;
+
+namespace detail {
+
+template <typename Char>
+using unsigned_char = typename conditional_t<std::is_integral<Char>::value,
+ std::make_unsigned<Char>,
+ type_identity<unsigned>>::type;
+
+// Character (code unit) type is erased to prevent template bloat.
+struct fill_t {
+ private:
+ enum { max_size = 4 };
+ char data_[max_size] = {' '};
+ unsigned char size_ = 1;
+
+ public:
+ template <typename Char>
+ FMT_CONSTEXPR void operator=(basic_string_view<Char> s) {
+ auto size = s.size();
+ size_ = static_cast<unsigned char>(size);
+ if (size == 1) {
+ unsigned uchar = static_cast<unsigned_char<Char>>(s[0]);
+ data_[0] = static_cast<char>(uchar);
+ data_[1] = static_cast<char>(uchar >> 8);
+ return;
+ }
+ FMT_ASSERT(size <= max_size, "invalid fill");
+ for (size_t i = 0; i < size; ++i) data_[i] = static_cast<char>(s[i]);
+ }
+
+ FMT_CONSTEXPR void operator=(char c) {
+ data_[0] = c;
+ size_ = 1;
+ }
+
+ constexpr auto size() const -> size_t { return size_; }
+
+ template <typename Char> constexpr auto get() const -> Char {
+ using uchar = unsigned char;
+ return static_cast<Char>(static_cast<uchar>(data_[0]) |
+ (static_cast<uchar>(data_[1]) << 8));
+ }
+
+ template <typename Char, FMT_ENABLE_IF(std::is_same<Char, char>::value)>
+ constexpr auto data() const -> const Char* {
+ return data_;
+ }
+ template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
+ constexpr auto data() const -> const Char* {
+ return nullptr;
+ }
+};
+} // namespace detail
+
+enum class presentation_type : unsigned char {
+ // Common specifiers:
+ none = 0,
+ debug = 1, // '?'
+ string = 2, // 's' (string, bool)
+
+ // Integral, bool and character specifiers:
+ dec = 3, // 'd'
+ hex, // 'x' or 'X'
+ oct, // 'o'
+ bin, // 'b' or 'B'
+ chr, // 'c'
+
+ // String and pointer specifiers:
+ pointer = 3, // 'p'
+
+ // Floating-point specifiers:
+ exp = 1, // 'e' or 'E' (1 since there is no FP debug presentation)
+ fixed, // 'f' or 'F'
+ general, // 'g' or 'G'
+ hexfloat // 'a' or 'A'
+};
+
+// Format specifiers for built-in and string types.
+struct format_specs {
+ int width;
+ int precision;
+ presentation_type type;
+ align_t align : 4;
+ sign_t sign : 3;
+ bool upper : 1; // An uppercase version e.g. 'X' for 'x'.
+ bool alt : 1; // Alternate form ('#').
+ bool localized : 1;
+ detail::fill_t fill;
+
+ constexpr format_specs()
+ : width(0),
+ precision(-1),
+ type(presentation_type::none),
+ align(align::none),
+ sign(sign::none),
+ upper(false),
+ alt(false),
+ localized(false) {}
+};
+
+namespace detail {
+
+enum class arg_id_kind { none, index, name };
+
+// An argument reference.
+template <typename Char> struct arg_ref {
+ FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {}
+
+ FMT_CONSTEXPR explicit arg_ref(int index)
+ : kind(arg_id_kind::index), val(index) {}
+ FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name)
+ : kind(arg_id_kind::name), val(name) {}
+
+ FMT_CONSTEXPR auto operator=(int idx) -> arg_ref& {
+ kind = arg_id_kind::index;
+ val.index = idx;
+ return *this;
+ }
+
+ arg_id_kind kind;
+ union value {
+ FMT_CONSTEXPR value(int idx = 0) : index(idx) {}
+ FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {}
+
+ int index;
+ basic_string_view<Char> name;
+ } val;
+};
+
+// Format specifiers with width and precision resolved at formatting rather
+// than parsing time to allow reusing the same parsed specifiers with
+// different sets of arguments (precompilation of format strings).
+template <typename Char = char> struct dynamic_format_specs : format_specs {
+ arg_ref<Char> width_ref;
+ arg_ref<Char> precision_ref;
+};
+
+// Converts a character to ASCII. Returns '\0' on conversion failure.
+template <typename Char, FMT_ENABLE_IF(std::is_integral<Char>::value)>
+constexpr auto to_ascii(Char c) -> char {
+ return c <= 0xff ? static_cast<char>(c) : '\0';
+}
+
+// Returns the number of code units in a code point or 1 on error.
+template <typename Char>
+FMT_CONSTEXPR auto code_point_length(const Char* begin) -> int {
+ if (const_check(sizeof(Char) != 1)) return 1;
+ auto c = static_cast<unsigned char>(*begin);
+ return static_cast<int>((0x3a55000000000000ull >> (2 * (c >> 3))) & 0x3) + 1;
+}
+
+// Return the result via the out param to workaround gcc bug 77539.
+template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*>
+FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool {
+ for (out = first; out != last; ++out) {
+ if (*out == value) return true;
+ }
+ return false;
+}
+
+template <>
+inline auto find<false, char>(const char* first, const char* last, char value,
+ const char*& out) -> bool {
+ out =
+ static_cast<const char*>(memchr(first, value, to_unsigned(last - first)));
+ return out != nullptr;
+}
+
+// Parses the range [begin, end) as an unsigned integer. This function assumes
+// that the range is non-empty and the first character is a digit.
+template <typename Char>
+FMT_CONSTEXPR auto parse_nonnegative_int(const Char*& begin, const Char* end,
+ int error_value) noexcept -> int {
+ FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', "");
+ unsigned value = 0, prev = 0;
+ auto p = begin;
+ do {
+ prev = value;
+ value = value * 10 + unsigned(*p - '0');
+ ++p;
+ } while (p != end && '0' <= *p && *p <= '9');
+ auto num_digits = p - begin;
+ begin = p;
+ int digits10 = static_cast<int>(sizeof(int) * CHAR_BIT * 3 / 10);
+ if (num_digits <= digits10) return static_cast<int>(value);
+ // Check for overflow.
+ unsigned max = INT_MAX;
+ return num_digits == digits10 + 1 &&
+ prev * 10ull + unsigned(p[-1] - '0') <= max
+ ? static_cast<int>(value)
+ : error_value;
+}
+
+FMT_CONSTEXPR inline auto parse_align(char c) -> align_t {
+ switch (c) {
+ case '<':
+ return align::left;
+ case '>':
+ return align::right;
+ case '^':
+ return align::center;
+ }
+ return align::none;
+}
+
+template <typename Char> constexpr auto is_name_start(Char c) -> bool {
+ return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '_';
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR auto do_parse_arg_id(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ Char c = *begin;
+ if (c >= '0' && c <= '9') {
+ int index = 0;
+ if (c != '0')
+ index = parse_nonnegative_int(begin, end, INT_MAX);
+ else
+ ++begin;
+ if (begin == end || (*begin != '}' && *begin != ':'))
+ report_error("invalid format string");
+ else
+ handler.on_index(index);
+ return begin;
+ }
+ if (!is_name_start(c)) {
+ report_error("invalid format string");
+ return begin;
+ }
+ auto it = begin;
+ do {
+ ++it;
+ } while (it != end && (is_name_start(*it) || ('0' <= *it && *it <= '9')));
+ handler.on_name({begin, to_unsigned(it - begin)});
+ return it;
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR auto parse_arg_id(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ FMT_ASSERT(begin != end, "");
+ Char c = *begin;
+ if (c != '}' && c != ':') return do_parse_arg_id(begin, end, handler);
+ handler.on_auto();
+ return begin;
+}
+
+template <typename Char> struct dynamic_spec_id_handler {
+ basic_format_parse_context<Char>& ctx;
+ arg_ref<Char>& ref;
+
+ FMT_CONSTEXPR void on_auto() {
+ int id = ctx.next_arg_id();
+ ref = arg_ref<Char>(id);
+ ctx.check_dynamic_spec(id);
+ }
+ FMT_CONSTEXPR void on_index(int id) {
+ ref = arg_ref<Char>(id);
+ ctx.check_arg_id(id);
+ ctx.check_dynamic_spec(id);
+ }
+ FMT_CONSTEXPR void on_name(basic_string_view<Char> id) {
+ ref = arg_ref<Char>(id);
+ ctx.check_arg_id(id);
+ }
+};
+
+// Parses [integer | "{" [arg_id] "}"].
+template <typename Char>
+FMT_CONSTEXPR auto parse_dynamic_spec(const Char* begin, const Char* end,
+ int& value, arg_ref<Char>& ref,
+ basic_format_parse_context<Char>& ctx)
+ -> const Char* {
+ FMT_ASSERT(begin != end, "");
+ if ('0' <= *begin && *begin <= '9') {
+ int val = parse_nonnegative_int(begin, end, -1);
+ if (val != -1)
+ value = val;
+ else
+ report_error("number is too big");
+ } else if (*begin == '{') {
+ ++begin;
+ auto handler = dynamic_spec_id_handler<Char>{ctx, ref};
+ if (begin != end) begin = parse_arg_id(begin, end, handler);
+ if (begin != end && *begin == '}') return ++begin;
+ report_error("invalid format string");
+ }
+ return begin;
+}
+
+template <typename Char>
+FMT_CONSTEXPR auto parse_precision(const Char* begin, const Char* end,
+ int& value, arg_ref<Char>& ref,
+ basic_format_parse_context<Char>& ctx)
+ -> const Char* {
+ ++begin;
+ if (begin == end || *begin == '}') {
+ report_error("invalid precision");
+ return begin;
+ }
+ return parse_dynamic_spec(begin, end, value, ref, ctx);
+}
+
+enum class state { start, align, sign, hash, zero, width, precision, locale };
+
+// Parses standard format specifiers.
+template <typename Char>
+FMT_CONSTEXPR auto parse_format_specs(const Char* begin, const Char* end,
+ dynamic_format_specs<Char>& specs,
+ basic_format_parse_context<Char>& ctx,
+ type arg_type) -> const Char* {
+ auto c = '\0';
+ if (end - begin > 1) {
+ auto next = to_ascii(begin[1]);
+ c = parse_align(next) == align::none ? to_ascii(*begin) : '\0';
+ } else {
+ if (begin == end) return begin;
+ c = to_ascii(*begin);
+ }
+
+ struct {
+ state current_state = state::start;
+ FMT_CONSTEXPR void operator()(state s, bool valid = true) {
+ if (current_state >= s || !valid)
+ report_error("invalid format specifier");
+ current_state = s;
+ }
+ } enter_state;
+
+ using pres = presentation_type;
+ constexpr auto integral_set = sint_set | uint_set | bool_set | char_set;
+ struct {
+ const Char*& begin;
+ dynamic_format_specs<Char>& specs;
+ type arg_type;
+
+ FMT_CONSTEXPR auto operator()(pres pres_type, int set) -> const Char* {
+ if (!in(arg_type, set)) {
+ if (arg_type == type::none_type) return begin;
+ report_error("invalid format specifier");
+ }
+ specs.type = pres_type;
+ return begin + 1;
+ }
+ } parse_presentation_type{begin, specs, arg_type};
+
+ for (;;) {
+ switch (c) {
+ case '<':
+ case '>':
+ case '^':
+ enter_state(state::align);
+ specs.align = parse_align(c);
+ ++begin;
+ break;
+ case '+':
+ case '-':
+ case ' ':
+ if (arg_type == type::none_type) return begin;
+ enter_state(state::sign, in(arg_type, sint_set | float_set));
+ switch (c) {
+ case '+':
+ specs.sign = sign::plus;
+ break;
+ case '-':
+ specs.sign = sign::minus;
+ break;
+ case ' ':
+ specs.sign = sign::space;
+ break;
+ }
+ ++begin;
+ break;
+ case '#':
+ if (arg_type == type::none_type) return begin;
+ enter_state(state::hash, is_arithmetic_type(arg_type));
+ specs.alt = true;
+ ++begin;
+ break;
+ case '0':
+ enter_state(state::zero);
+ if (!is_arithmetic_type(arg_type)) {
+ if (arg_type == type::none_type) return begin;
+ report_error("format specifier requires numeric argument");
+ }
+ if (specs.align == align::none) {
+ // Ignore 0 if align is specified for compatibility with std::format.
+ specs.align = align::numeric;
+ specs.fill = '0';
+ }
+ ++begin;
+ break;
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case '{':
+ enter_state(state::width);
+ begin = parse_dynamic_spec(begin, end, specs.width, specs.width_ref, ctx);
+ break;
+ case '.':
+ if (arg_type == type::none_type) return begin;
+ enter_state(state::precision,
+ in(arg_type, float_set | string_set | cstring_set));
+ begin = parse_precision(begin, end, specs.precision, specs.precision_ref,
+ ctx);
+ break;
+ case 'L':
+ if (arg_type == type::none_type) return begin;
+ enter_state(state::locale, is_arithmetic_type(arg_type));
+ specs.localized = true;
+ ++begin;
+ break;
+ case 'd':
+ return parse_presentation_type(pres::dec, integral_set);
+ case 'X':
+ specs.upper = true;
+ FMT_FALLTHROUGH;
+ case 'x':
+ return parse_presentation_type(pres::hex, integral_set);
+ case 'o':
+ return parse_presentation_type(pres::oct, integral_set);
+ case 'B':
+ specs.upper = true;
+ FMT_FALLTHROUGH;
+ case 'b':
+ return parse_presentation_type(pres::bin, integral_set);
+ case 'E':
+ specs.upper = true;
+ FMT_FALLTHROUGH;
+ case 'e':
+ return parse_presentation_type(pres::exp, float_set);
+ case 'F':
+ specs.upper = true;
+ FMT_FALLTHROUGH;
+ case 'f':
+ return parse_presentation_type(pres::fixed, float_set);
+ case 'G':
+ specs.upper = true;
+ FMT_FALLTHROUGH;
+ case 'g':
+ return parse_presentation_type(pres::general, float_set);
+ case 'A':
+ specs.upper = true;
+ FMT_FALLTHROUGH;
+ case 'a':
+ return parse_presentation_type(pres::hexfloat, float_set);
+ case 'c':
+ if (arg_type == type::bool_type) report_error("invalid format specifier");
+ return parse_presentation_type(pres::chr, integral_set);
+ case 's':
+ return parse_presentation_type(pres::string,
+ bool_set | string_set | cstring_set);
+ case 'p':
+ return parse_presentation_type(pres::pointer, pointer_set | cstring_set);
+ case '?':
+ return parse_presentation_type(pres::debug,
+ char_set | string_set | cstring_set);
+ case '}':
+ return begin;
+ default: {
+ if (*begin == '}') return begin;
+ // Parse fill and alignment.
+ auto fill_end = begin + code_point_length(begin);
+ if (end - fill_end <= 0) {
+ report_error("invalid format specifier");
+ return begin;
+ }
+ if (*begin == '{') {
+ report_error("invalid fill character '{'");
+ return begin;
+ }
+ auto align = parse_align(to_ascii(*fill_end));
+ enter_state(state::align, align != align::none);
+ specs.fill =
+ basic_string_view<Char>(begin, to_unsigned(fill_end - begin));
+ specs.align = align;
+ begin = fill_end + 1;
+ }
+ }
+ if (begin == end) return begin;
+ c = to_ascii(*begin);
+ }
+}
+
+template <typename Char, typename Handler>
+FMT_CONSTEXPR auto parse_replacement_field(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ struct id_adapter {
+ Handler& handler;
+ int arg_id;
+
+ FMT_CONSTEXPR void on_auto() { arg_id = handler.on_arg_id(); }
+ FMT_CONSTEXPR void on_index(int id) { arg_id = handler.on_arg_id(id); }
+ FMT_CONSTEXPR void on_name(basic_string_view<Char> id) {
+ arg_id = handler.on_arg_id(id);
+ }
+ };
+
+ ++begin;
+ if (begin == end) return handler.on_error("invalid format string"), end;
+ if (*begin == '}') {
+ handler.on_replacement_field(handler.on_arg_id(), begin);
+ } else if (*begin == '{') {
+ handler.on_text(begin, begin + 1);
+ } else {
+ auto adapter = id_adapter{handler, 0};
+ begin = parse_arg_id(begin, end, adapter);
+ Char c = begin != end ? *begin : Char();
+ if (c == '}') {
+ handler.on_replacement_field(adapter.arg_id, begin);
+ } else if (c == ':') {
+ begin = handler.on_format_specs(adapter.arg_id, begin + 1, end);
+ if (begin == end || *begin != '}')
+ return handler.on_error("unknown format specifier"), end;
+ } else {
+ return handler.on_error("missing '}' in format string"), end;
+ }
+ }
+ return begin + 1;
+}
+
+template <bool IS_CONSTEXPR, typename Char, typename Handler>
+FMT_CONSTEXPR void parse_format_string(basic_string_view<Char> format_str,
+ Handler&& handler) {
+ auto begin = format_str.data();
+ auto end = begin + format_str.size();
+ if (end - begin < 32) {
+ // Use a simple loop instead of memchr for small strings.
+ const Char* p = begin;
+ while (p != end) {
+ auto c = *p++;
+ if (c == '{') {
+ handler.on_text(begin, p - 1);
+ begin = p = parse_replacement_field(p - 1, end, handler);
+ } else if (c == '}') {
+ if (p == end || *p != '}')
+ return handler.on_error("unmatched '}' in format string");
+ handler.on_text(begin, p);
+ begin = ++p;
+ }
+ }
+ handler.on_text(begin, end);
+ return;
+ }
+ struct writer {
+ FMT_CONSTEXPR void operator()(const Char* from, const Char* to) {
+ if (from == to) return;
+ for (;;) {
+ const Char* p = nullptr;
+ if (!find<IS_CONSTEXPR>(from, to, Char('}'), p))
+ return handler_.on_text(from, to);
+ ++p;
+ if (p == to || *p != '}')
+ return handler_.on_error("unmatched '}' in format string");
+ handler_.on_text(from, p);
+ from = p + 1;
+ }
+ }
+ Handler& handler_;
+ } write = {handler};
+ while (begin != end) {
+ // Doing two passes with memchr (one for '{' and another for '}') is up to
+ // 2.5x faster than the naive one-pass implementation on big format strings.
+ const Char* p = begin;
+ if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, Char('{'), p))
+ return write(begin, end);
+ write(begin, p);
+ begin = parse_replacement_field(p, end, handler);
+ }
+}
+
+template <typename T, bool = is_named_arg<T>::value> struct strip_named_arg {
+ using type = T;
+};
+template <typename T> struct strip_named_arg<T, true> {
+ using type = remove_cvref_t<decltype(T::value)>;
+};
+
+template <typename T, typename ParseContext>
+FMT_VISIBILITY("hidden") // Suppress an ld warning on macOS (#3769).
+FMT_CONSTEXPR auto parse_format_specs(ParseContext& ctx)
+ -> decltype(ctx.begin()) {
+ using char_type = typename ParseContext::char_type;
+ using context = buffered_context<char_type>;
+ using mapped_type = conditional_t<
+ mapped_type_constant<T, context>::value != type::custom_type,
+ decltype(arg_mapper<context>().map(std::declval<const T&>())),
+ typename strip_named_arg<T>::type>;
+#if defined(__cpp_if_constexpr)
+ if constexpr (std::is_default_constructible<
+ formatter<mapped_type, char_type>>::value) {
+ return formatter<mapped_type, char_type>().parse(ctx);
+ } else {
+ type_is_unformattable_for<T, char_type> _;
+ return ctx.begin();
+ }
+#else
+ return formatter<mapped_type, char_type>().parse(ctx);
+#endif
+}
+
+// Checks char specs and returns true iff the presentation type is char-like.
+FMT_CONSTEXPR inline auto check_char_specs(const format_specs& specs) -> bool {
+ if (specs.type != presentation_type::none &&
+ specs.type != presentation_type::chr &&
+ specs.type != presentation_type::debug) {
+ return false;
+ }
+ if (specs.align == align::numeric || specs.sign != sign::none || specs.alt)
+ report_error("invalid format specifier for char");
+ return true;
+}
+
+#if FMT_USE_NONTYPE_TEMPLATE_ARGS
+template <int N, typename T, typename... Args, typename Char>
+constexpr auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
+ if constexpr (is_statically_named_arg<T>()) {
+ if (name == T::name) return N;
+ }
+ if constexpr (sizeof...(Args) > 0)
+ return get_arg_index_by_name<N + 1, Args...>(name);
+ (void)name; // Workaround an MSVC bug about "unused" parameter.
+ return -1;
+}
+#endif
+
+template <typename... Args, typename Char>
+FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
+#if FMT_USE_NONTYPE_TEMPLATE_ARGS
+ if constexpr (sizeof...(Args) > 0)
+ return get_arg_index_by_name<0, Args...>(name);
+#endif
+ (void)name;
+ return -1;
+}
+
+template <typename Char, typename... Args> class format_string_checker {
+ private:
+ using parse_context_type = compile_parse_context<Char>;
+ static constexpr int num_args = sizeof...(Args);
+
+ // Format specifier parsing function.
+ // In the future basic_format_parse_context will replace compile_parse_context
+ // here and will use is_constant_evaluated and downcasting to access the data
+ // needed for compile-time checks: https://godbolt.org/z/GvWzcTjh1.
+ using parse_func = const Char* (*)(parse_context_type&);
+
+ type types_[num_args > 0 ? static_cast<size_t>(num_args) : 1];
+ parse_context_type context_;
+ parse_func parse_funcs_[num_args > 0 ? static_cast<size_t>(num_args) : 1];
+
+ public:
+ explicit FMT_CONSTEXPR format_string_checker(basic_string_view<Char> fmt)
+ : types_{mapped_type_constant<Args, buffered_context<Char>>::value...},
+ context_(fmt, num_args, types_),
+ parse_funcs_{&parse_format_specs<Args, parse_context_type>...} {}
+
+ FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
+
+ FMT_CONSTEXPR auto on_arg_id() -> int { return context_.next_arg_id(); }
+ FMT_CONSTEXPR auto on_arg_id(int id) -> int {
+ return context_.check_arg_id(id), id;
+ }
+ FMT_CONSTEXPR auto on_arg_id(basic_string_view<Char> id) -> int {
+#if FMT_USE_NONTYPE_TEMPLATE_ARGS
+ auto index = get_arg_index_by_name<Args...>(id);
+ if (index < 0) on_error("named argument is not found");
+ return index;
+#else
+ (void)id;
+ on_error("compile-time checks for named arguments require C++20 support");
+ return 0;
+#endif
+ }
+
+ FMT_CONSTEXPR void on_replacement_field(int id, const Char* begin) {
+ on_format_specs(id, begin, begin); // Call parse() on empty specs.
+ }
+
+ FMT_CONSTEXPR auto on_format_specs(int id, const Char* begin, const Char*)
+ -> const Char* {
+ context_.advance_to(begin);
+ // id >= 0 check is a workaround for gcc 10 bug (#2065).
+ return id >= 0 && id < num_args ? parse_funcs_[id](context_) : begin;
+ }
+
+ FMT_NORETURN FMT_CONSTEXPR void on_error(const char* message) {
+ report_error(message);
+ }
+};
+
+// A base class for compile-time strings.
+struct compile_string {};
+
+template <typename S>
+using is_compile_string = std::is_base_of<compile_string, S>;
+
+// Reports a compile-time error if S is not a valid format string.
+template <typename..., typename S, FMT_ENABLE_IF(!is_compile_string<S>::value)>
+FMT_ALWAYS_INLINE void check_format_string(const S&) {
+#ifdef FMT_ENFORCE_COMPILE_STRING
+ static_assert(is_compile_string<S>::value,
+ "FMT_ENFORCE_COMPILE_STRING requires all format strings to use "
+ "FMT_STRING.");
+#endif
+}
+template <typename... Args, typename S,
+ FMT_ENABLE_IF(is_compile_string<S>::value)>
+void check_format_string(S format_str) {
+ using char_t = typename S::char_type;
+ FMT_CONSTEXPR auto s = basic_string_view<char_t>(format_str);
+ using checker = format_string_checker<char_t, remove_cvref_t<Args>...>;
+ FMT_CONSTEXPR bool error = (parse_format_string<true>(s, checker(s)), true);
+ ignore_unused(error);
+}
+
+// Report truncation to prevent silent data loss.
+inline void report_truncation(bool truncated) {
+ if (truncated) report_error("output is truncated");
+}
+
+// Use vformat_args and avoid type_identity to keep symbols short and workaround
+// a GCC <= 4.8 bug.
+template <typename Char = char> struct vformat_args {
+ using type = basic_format_args<buffered_context<Char>>;
+};
+template <> struct vformat_args<char> {
+ using type = format_args;
+};
+
+template <typename Char>
+void vformat_to(buffer<Char>& buf, basic_string_view<Char> fmt,
+ typename vformat_args<Char>::type args, locale_ref loc = {});
+
+FMT_API void vprint_mojibake(FILE*, string_view, format_args, bool = false);
+#ifndef _WIN32
+inline void vprint_mojibake(FILE*, string_view, format_args, bool) {}
+#endif
+
+template <typename T, typename Char, type TYPE> struct native_formatter {
+ private:
+ dynamic_format_specs<Char> specs_;
+
+ public:
+ using nonlocking = void;
+
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const Char* {
+ if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin();
+ auto end = parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, TYPE);
+ if (const_check(TYPE == type::char_type)) check_char_specs(specs_);
+ return end;
+ }
+
+ template <type U = TYPE,
+ FMT_ENABLE_IF(U == type::string_type || U == type::cstring_type ||
+ U == type::char_type)>
+ FMT_CONSTEXPR void set_debug_format(bool set = true) {
+ specs_.type = set ? presentation_type::debug : presentation_type::none;
+ }
+
+ template <typename FormatContext>
+ FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const
+ -> decltype(ctx.out());
+};
+} // namespace detail
+
+FMT_BEGIN_EXPORT
+
+// A formatter specialization for natively supported types.
+template <typename T, typename Char>
+struct formatter<T, Char,
+ enable_if_t<detail::type_constant<T, Char>::value !=
+ detail::type::custom_type>>
+ : detail::native_formatter<T, Char, detail::type_constant<T, Char>::value> {
+};
+
+template <typename Char = char> struct runtime_format_string {
+ basic_string_view<Char> str;
+};
+
+/// A compile-time format string.
+template <typename Char, typename... Args> class basic_format_string {
+ private:
+ basic_string_view<Char> str_;
+
+ public:
+ template <
+ typename S,
+ FMT_ENABLE_IF(
+ std::is_convertible<const S&, basic_string_view<Char>>::value ||
+ (detail::is_compile_string<S>::value &&
+ std::is_constructible<basic_string_view<Char>, const S&>::value))>
+ FMT_CONSTEVAL FMT_ALWAYS_INLINE basic_format_string(const S& s) : str_(s) {
+ static_assert(
+ detail::count<
+ (std::is_base_of<detail::view, remove_reference_t<Args>>::value &&
+ std::is_reference<Args>::value)...>() == 0,
+ "passing views as lvalues is disallowed");
+#if FMT_USE_CONSTEVAL
+ if constexpr (detail::count_named_args<Args...>() ==
+ detail::count_statically_named_args<Args...>()) {
+ using checker =
+ detail::format_string_checker<Char, remove_cvref_t<Args>...>;
+ detail::parse_format_string<true>(str_, checker(s));
+ }
+#else
+ detail::check_format_string<Args...>(s);
+#endif
+ }
+ basic_format_string(runtime_format_string<Char> fmt) : str_(fmt.str) {}
+
+ FMT_ALWAYS_INLINE operator basic_string_view<Char>() const { return str_; }
+ auto get() const -> basic_string_view<Char> { return str_; }
+};
+
+#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+// Workaround broken conversion on older gcc.
+template <typename...> using format_string = string_view;
+inline auto runtime(string_view s) -> string_view { return s; }
+#else
+template <typename... Args>
+using format_string = basic_format_string<char, type_identity_t<Args>...>;
+/**
+ * Creates a runtime format string.
+ *
+ * **Example**:
+ *
+ * // Check format string at runtime instead of compile-time.
+ * fmt::print(fmt::runtime("{:d}"), "I am not a number");
+ */
+inline auto runtime(string_view s) -> runtime_format_string<> { return {{s}}; }
+#endif
+
+/// Formats a string and writes the output to `out`.
+template <typename OutputIt,
+ FMT_ENABLE_IF(detail::is_output_iterator<remove_cvref_t<OutputIt>,
+ char>::value)>
+auto vformat_to(OutputIt&& out, string_view fmt, format_args args)
+ -> remove_cvref_t<OutputIt> {
+ auto&& buf = detail::get_buffer<char>(out);
+ detail::vformat_to(buf, fmt, args, {});
+ return detail::get_iterator(buf, out);
+}
+
+/**
+ * Formats `args` according to specifications in `fmt`, writes the result to
+ * the output iterator `out` and returns the iterator past the end of the output
+ * range. `format_to` does not append a terminating null character.
+ *
+ * **Example**:
+ *
+ * auto out = std::vector<char>();
+ * fmt::format_to(std::back_inserter(out), "{}", 42);
+ */
+template <typename OutputIt, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<remove_cvref_t<OutputIt>,
+ char>::value)>
+FMT_INLINE auto format_to(OutputIt&& out, format_string<T...> fmt, T&&... args)
+ -> remove_cvref_t<OutputIt> {
+ return vformat_to(FMT_FWD(out), fmt, fmt::make_format_args(args...));
+}
+
+template <typename OutputIt> struct format_to_n_result {
+ /// Iterator past the end of the output range.
+ OutputIt out;
+ /// Total (not truncated) output size.
+ size_t size;
+};
+
+template <typename OutputIt, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+auto vformat_to_n(OutputIt out, size_t n, string_view fmt, format_args args)
+ -> format_to_n_result<OutputIt> {
+ using traits = detail::fixed_buffer_traits;
+ auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
+ detail::vformat_to(buf, fmt, args, {});
+ return {buf.out(), buf.count()};
+}
+
+/**
+ * Formats `args` according to specifications in `fmt`, writes up to `n`
+ * characters of the result to the output iterator `out` and returns the total
+ * (not truncated) output size and the iterator past the end of the output
+ * range. `format_to_n` does not append a terminating null character.
+ */
+template <typename OutputIt, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+FMT_INLINE auto format_to_n(OutputIt out, size_t n, format_string<T...> fmt,
+ T&&... args) -> format_to_n_result<OutputIt> {
+ return vformat_to_n(out, n, fmt, fmt::make_format_args(args...));
+}
+
+template <typename OutputIt, typename Sentinel = OutputIt>
+struct format_to_result {
+ /// Iterator pointing to just after the last successful write in the range.
+ OutputIt out;
+ /// Specifies if the output was truncated.
+ bool truncated;
+
+ FMT_CONSTEXPR operator OutputIt&() & {
+ detail::report_truncation(truncated);
+ return out;
+ }
+ FMT_CONSTEXPR operator const OutputIt&() const& {
+ detail::report_truncation(truncated);
+ return out;
+ }
+ FMT_CONSTEXPR operator OutputIt&&() && {
+ detail::report_truncation(truncated);
+ return static_cast<OutputIt&&>(out);
+ }
+};
+
+template <size_t N>
+auto vformat_to(char (&out)[N], string_view fmt, format_args args)
+ -> format_to_result<char*> {
+ auto result = vformat_to_n(out, N, fmt, args);
+ return {result.out, result.size > N};
+}
+
+template <size_t N, typename... T>
+FMT_INLINE auto format_to(char (&out)[N], format_string<T...> fmt, T&&... args)
+ -> format_to_result<char*> {
+ auto result = fmt::format_to_n(out, N, fmt, static_cast<T&&>(args)...);
+ return {result.out, result.size > N};
+}
+
+/// Returns the number of chars in the output of `format(fmt, args...)`.
+template <typename... T>
+FMT_NODISCARD FMT_INLINE auto formatted_size(format_string<T...> fmt,
+ T&&... args) -> size_t {
+ auto buf = detail::counting_buffer<>();
+ detail::vformat_to<char>(buf, fmt, fmt::make_format_args(args...), {});
+ return buf.count();
+}
+
+FMT_API void vprint(string_view fmt, format_args args);
+FMT_API void vprint(FILE* f, string_view fmt, format_args args);
+FMT_API void vprint_buffered(FILE* f, string_view fmt, format_args args);
+FMT_API void vprintln(FILE* f, string_view fmt, format_args args);
+
+/**
+ * Formats `args` according to specifications in `fmt` and writes the output
+ * to `stdout`.
+ *
+ * **Example**:
+ *
+ * fmt::print("The answer is {}.", 42);
+ */
+template <typename... T>
+FMT_INLINE void print(format_string<T...> fmt, T&&... args) {
+ const auto& vargs = fmt::make_format_args(args...);
+ if (!detail::use_utf8()) return detail::vprint_mojibake(stdout, fmt, vargs);
+ return detail::is_locking<T...>() ? vprint_buffered(stdout, fmt, vargs)
+ : vprint(fmt, vargs);
+}
+
+/**
+ * Formats `args` according to specifications in `fmt` and writes the
+ * output to the file `f`.
+ *
+ * **Example**:
+ *
+ * fmt::print(stderr, "Don't {}!", "panic");
+ */
+template <typename... T>
+FMT_INLINE void print(FILE* f, format_string<T...> fmt, T&&... args) {
+ const auto& vargs = fmt::make_format_args(args...);
+ if (!detail::use_utf8()) return detail::vprint_mojibake(f, fmt, vargs);
+ return detail::is_locking<T...>() ? vprint_buffered(f, fmt, vargs)
+ : vprint(f, fmt, vargs);
+}
+
+/// Formats `args` according to specifications in `fmt` and writes the output
+/// to the file `f` followed by a newline.
+template <typename... T>
+FMT_INLINE void println(FILE* f, format_string<T...> fmt, T&&... args) {
+ const auto& vargs = fmt::make_format_args(args...);
+ return detail::use_utf8() ? vprintln(f, fmt, vargs)
+ : detail::vprint_mojibake(f, fmt, vargs, true);
+}
+
+/// Formats `args` according to specifications in `fmt` and writes the output
+/// to `stdout` followed by a newline.
+template <typename... T>
+FMT_INLINE void println(format_string<T...> fmt, T&&... args) {
+ return fmt::println(stdout, fmt, static_cast<T&&>(args)...);
+}
+
+FMT_END_EXPORT
+FMT_GCC_PRAGMA("GCC pop_options")
+FMT_END_NAMESPACE
+
+#ifdef FMT_HEADER_ONLY
+# include "format.h"
+#endif
+#endif // FMT_BASE_H_
#ifndef FMT_CHRONO_H_
#define FMT_CHRONO_H_
-#include <algorithm>
-#include <chrono>
-#include <cmath> // std::isfinite
-#include <cstring> // std::memcpy
-#include <ctime>
-#include <iterator>
-#include <locale>
-#include <ostream>
-#include <type_traits>
+#ifndef FMT_MODULE
+# include <algorithm>
+# include <chrono>
+# include <cmath> // std::isfinite
+# include <cstring> // std::memcpy
+# include <ctime>
+# include <iterator>
+# include <locale>
+# include <ostream>
+# include <type_traits>
+#endif
#include "format.h"
FMT_BEGIN_NAMESPACE
+// Check if std::chrono::local_t is available.
+#ifndef FMT_USE_LOCAL_TIME
+# ifdef __cpp_lib_chrono
+# define FMT_USE_LOCAL_TIME (__cpp_lib_chrono >= 201907L)
+# else
+# define FMT_USE_LOCAL_TIME 0
+# endif
+#endif
+
+// Check if std::chrono::utc_timestamp is available.
+#ifndef FMT_USE_UTC_TIME
+# ifdef __cpp_lib_chrono
+# define FMT_USE_UTC_TIME (__cpp_lib_chrono >= 201907L)
+# else
+# define FMT_USE_UTC_TIME 0
+# endif
+#endif
+
// Enable tzset.
#ifndef FMT_USE_TZSET
// UWP doesn't provide _tzset.
FMT_ENABLE_IF(!std::is_same<From, To>::value &&
std::numeric_limits<From>::is_signed ==
std::numeric_limits<To>::is_signed)>
-FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
+FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec)
+ -> To {
ec = 0;
using F = std::numeric_limits<From>;
using T = std::numeric_limits<To>;
return static_cast<To>(from);
}
-/**
- * converts From to To, without loss. If the dynamic value of from
- * can't be converted to To without loss, ec is set.
- */
+/// Converts From to To, without loss. If the dynamic value of from
+/// can't be converted to To without loss, ec is set.
template <typename To, typename From,
FMT_ENABLE_IF(!std::is_same<From, To>::value &&
std::numeric_limits<From>::is_signed !=
std::numeric_limits<To>::is_signed)>
-FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
+FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec)
+ -> To {
ec = 0;
using F = std::numeric_limits<From>;
using T = std::numeric_limits<To>;
template <typename To, typename From,
FMT_ENABLE_IF(std::is_same<From, To>::value)>
-FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
+FMT_CONSTEXPR auto lossless_integral_conversion(const From from, int& ec)
+ -> To {
ec = 0;
return from;
} // function
// clang-format on
template <typename To, typename From,
FMT_ENABLE_IF(!std::is_same<From, To>::value)>
-FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
+FMT_CONSTEXPR auto safe_float_conversion(const From from, int& ec) -> To {
ec = 0;
using T = std::numeric_limits<To>;
static_assert(std::is_floating_point<From>::value, "From must be floating");
template <typename To, typename From,
FMT_ENABLE_IF(std::is_same<From, To>::value)>
-FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
+FMT_CONSTEXPR auto safe_float_conversion(const From from, int& ec) -> To {
ec = 0;
static_assert(std::is_floating_point<From>::value, "From must be floating");
return from;
}
-/**
- * safe duration cast between integral durations
- */
+/// Safe duration cast between integral durations
template <typename To, typename FromRep, typename FromPeriod,
FMT_ENABLE_IF(std::is_integral<FromRep>::value),
FMT_ENABLE_IF(std::is_integral<typename To::rep>::value)>
-To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
- int& ec) {
+auto safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
+ int& ec) -> To {
using From = std::chrono::duration<FromRep, FromPeriod>;
ec = 0;
// the basic idea is that we need to convert from count() in the from type
}
const auto min1 =
(std::numeric_limits<IntermediateRep>::min)() / Factor::num;
- if (!std::is_unsigned<IntermediateRep>::value && count < min1) {
+ if (detail::const_check(!std::is_unsigned<IntermediateRep>::value) &&
+ count < min1) {
ec = 1;
return {};
}
return ec ? To() : To(tocount);
}
-/**
- * safe duration_cast between floating point durations
- */
+/// Safe duration_cast between floating point durations
template <typename To, typename FromRep, typename FromPeriod,
FMT_ENABLE_IF(std::is_floating_point<FromRep>::value),
FMT_ENABLE_IF(std::is_floating_point<typename To::rep>::value)>
-To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
- int& ec) {
+auto safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
+ int& ec) -> To {
using From = std::chrono::duration<FromRep, FromPeriod>;
ec = 0;
if (std::isnan(from.count())) {
namespace detail {
template <typename T = void> struct null {};
-inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); }
-inline null<> localtime_s(...) { return null<>(); }
-inline null<> gmtime_r(...) { return null<>(); }
-inline null<> gmtime_s(...) { return null<>(); }
+inline auto localtime_r FMT_NOMACRO(...) -> null<> { return null<>(); }
+inline auto localtime_s(...) -> null<> { return null<>(); }
+inline auto gmtime_r(...) -> null<> { return null<>(); }
+inline auto gmtime_s(...) -> null<> { return null<>(); }
+
+// It is defined here and not in ostream.h because the latter has expensive
+// includes.
+template <typename Streambuf> class formatbuf : public Streambuf {
+ private:
+ using char_type = typename Streambuf::char_type;
+ using streamsize = decltype(std::declval<Streambuf>().sputn(nullptr, 0));
+ using int_type = typename Streambuf::int_type;
+ using traits_type = typename Streambuf::traits_type;
+
+ buffer<char_type>& buffer_;
+
+ public:
+ explicit formatbuf(buffer<char_type>& buf) : buffer_(buf) {}
+
+ protected:
+ // The put area is always empty. This makes the implementation simpler and has
+ // the advantage that the streambuf and the buffer are always in sync and
+ // sputc never writes into uninitialized memory. A disadvantage is that each
+ // call to sputc always results in a (virtual) call to overflow. There is no
+ // disadvantage here for sputn since this always results in a call to xsputn.
-inline const std::locale& get_classic_locale() {
+ auto overflow(int_type ch) -> int_type override {
+ if (!traits_type::eq_int_type(ch, traits_type::eof()))
+ buffer_.push_back(static_cast<char_type>(ch));
+ return ch;
+ }
+
+ auto xsputn(const char_type* s, streamsize count) -> streamsize override {
+ buffer_.append(s, s + count);
+ return count;
+ }
+};
+
+inline auto get_classic_locale() -> const std::locale& {
static const auto& locale = std::locale::classic();
return locale;
}
CodeUnit buf[max_size];
CodeUnit* end;
};
-template <typename CodeUnit>
-constexpr const size_t codecvt_result<CodeUnit>::max_size;
template <typename CodeUnit>
void write_codecvt(codecvt_result<CodeUnit>& out, string_view in_buf,
template <typename OutputIt>
auto write_encoded_tm_str(OutputIt out, string_view in, const std::locale& loc)
-> OutputIt {
- if (detail::is_utf8() && loc != get_classic_locale()) {
+ if (detail::use_utf8() && loc != get_classic_locale()) {
// char16_t and char32_t codecvts are broken in MSVC (linkage errors) and
// gcc-4.
-#if FMT_MSC_VERSION != 0 || \
- (defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI))
+#if FMT_MSC_VERSION != 0 || \
+ (defined(__GLIBCXX__) && \
+ (!defined(_GLIBCXX_USE_DUAL_ABI) || _GLIBCXX_USE_DUAL_ABI == 0))
// The _GLIBCXX_USE_DUAL_ABI macro is always defined in libstdc++ from gcc-5
// and newer.
using code_unit = wchar_t;
unit_t unit;
write_codecvt(unit, in, loc);
// In UTF-8 is used one to four one-byte code units.
- auto&& buf = basic_memory_buffer<char, unit_t::max_size * 4>();
- for (code_unit* p = unit.buf; p != unit.end; ++p) {
- uint32_t c = static_cast<uint32_t>(*p);
- if (sizeof(code_unit) == 2 && c >= 0xd800 && c <= 0xdfff) {
- // surrogate pair
- ++p;
- if (p == unit.end || (c & 0xfc00) != 0xd800 ||
- (*p & 0xfc00) != 0xdc00) {
- FMT_THROW(format_error("failed to format time"));
- }
- c = (c << 10) + static_cast<uint32_t>(*p) - 0x35fdc00;
- }
- if (c < 0x80) {
- buf.push_back(static_cast<char>(c));
- } else if (c < 0x800) {
- buf.push_back(static_cast<char>(0xc0 | (c >> 6)));
- buf.push_back(static_cast<char>(0x80 | (c & 0x3f)));
- } else if ((c >= 0x800 && c <= 0xd7ff) || (c >= 0xe000 && c <= 0xffff)) {
- buf.push_back(static_cast<char>(0xe0 | (c >> 12)));
- buf.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6)));
- buf.push_back(static_cast<char>(0x80 | (c & 0x3f)));
- } else if (c >= 0x10000 && c <= 0x10ffff) {
- buf.push_back(static_cast<char>(0xf0 | (c >> 18)));
- buf.push_back(static_cast<char>(0x80 | ((c & 0x3ffff) >> 12)));
- buf.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6)));
- buf.push_back(static_cast<char>(0x80 | (c & 0x3f)));
- } else {
- FMT_THROW(format_error("failed to format time"));
- }
- }
- return copy_str<char>(buf.data(), buf.data() + buf.size(), out);
+ auto u =
+ to_utf8<code_unit, basic_memory_buffer<char, unit_t::max_size * 4>>();
+ if (!u.convert({unit.buf, to_unsigned(unit.end - unit.buf)}))
+ FMT_THROW(format_error("failed to format time"));
+ return copy<char>(u.c_str(), u.c_str() + u.size(), out);
}
- return copy_str<char>(in.data(), in.data() + in.size(), out);
+ return copy<char>(in.data(), in.data() + in.size(), out);
}
template <typename Char, typename OutputIt,
-> OutputIt {
codecvt_result<Char> unit;
write_codecvt(unit, sv, loc);
- return copy_str<Char>(unit.buf, unit.end, out);
+ return copy<Char>(unit.buf, unit.end, out);
}
template <typename Char, typename OutputIt,
auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf);
auto&& os = std::basic_ostream<Char>(&format_buf);
os.imbue(loc);
- using iterator = std::ostreambuf_iterator<Char>;
- const auto& facet = std::use_facet<std::time_put<Char, iterator>>(loc);
+ const auto& facet = std::use_facet<std::time_put<Char>>(loc);
auto end = facet.put(os, os, Char(' '), &time, format, modifier);
if (end.failed()) FMT_THROW(format_error("failed to format time"));
}
char format, char modifier = 0) -> OutputIt {
auto&& buf = get_buffer<Char>(out);
do_write<Char>(buf, time, loc, format, modifier);
- return buf.out();
+ return get_iterator(buf, out);
}
template <typename Char, typename OutputIt,
return write_encoded_tm_str(out, string_view(buf.data(), buf.size()), loc);
}
+template <typename Rep1, typename Rep2>
+struct is_same_arithmetic_type
+ : public std::integral_constant<bool,
+ (std::is_integral<Rep1>::value &&
+ std::is_integral<Rep2>::value) ||
+ (std::is_floating_point<Rep1>::value &&
+ std::is_floating_point<Rep2>::value)> {
+};
+
+template <
+ typename To, typename FromRep, typename FromPeriod,
+ FMT_ENABLE_IF(is_same_arithmetic_type<FromRep, typename To::rep>::value)>
+auto fmt_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) -> To {
+#if FMT_SAFE_DURATION_CAST
+ // Throwing version of safe_duration_cast is only available for
+ // integer to integer or float to float casts.
+ int ec;
+ To to = safe_duration_cast::safe_duration_cast<To>(from, ec);
+ if (ec) FMT_THROW(format_error("cannot format duration"));
+ return to;
+#else
+ // Standard duration cast, may overflow.
+ return std::chrono::duration_cast<To>(from);
+#endif
+}
+
+template <
+ typename To, typename FromRep, typename FromPeriod,
+ FMT_ENABLE_IF(!is_same_arithmetic_type<FromRep, typename To::rep>::value)>
+auto fmt_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) -> To {
+ // Mixed integer <-> float cast is not supported by safe_duration_cast.
+ return std::chrono::duration_cast<To>(from);
+}
+
+template <typename Duration>
+auto to_time_t(
+ std::chrono::time_point<std::chrono::system_clock, Duration> time_point)
+ -> std::time_t {
+ // Cannot use std::chrono::system_clock::to_time_t since this would first
+ // require a cast to std::chrono::system_clock::time_point, which could
+ // overflow.
+ return fmt_duration_cast<std::chrono::duration<std::time_t>>(
+ time_point.time_since_epoch())
+ .count();
+}
} // namespace detail
-FMT_MODULE_EXPORT_BEGIN
+FMT_BEGIN_EXPORT
/**
- Converts given time since epoch as ``std::time_t`` value into calendar time,
- expressed in local time. Unlike ``std::localtime``, this function is
- thread-safe on most platforms.
+ * Converts given time since epoch as `std::time_t` value into calendar time,
+ * expressed in local time. Unlike `std::localtime`, this function is
+ * thread-safe on most platforms.
*/
-inline std::tm localtime(std::time_t time) {
+inline auto localtime(std::time_t time) -> std::tm {
struct dispatcher {
std::time_t time_;
std::tm tm_;
dispatcher(std::time_t t) : time_(t) {}
- bool run() {
+ auto run() -> bool {
using namespace fmt::detail;
return handle(localtime_r(&time_, &tm_));
}
- bool handle(std::tm* tm) { return tm != nullptr; }
+ auto handle(std::tm* tm) -> bool { return tm != nullptr; }
- bool handle(detail::null<>) {
+ auto handle(detail::null<>) -> bool {
using namespace fmt::detail;
return fallback(localtime_s(&tm_, &time_));
}
- bool fallback(int res) { return res == 0; }
+ auto fallback(int res) -> bool { return res == 0; }
#if !FMT_MSC_VERSION
- bool fallback(detail::null<>) {
+ auto fallback(detail::null<>) -> bool {
using namespace fmt::detail;
std::tm* tm = std::localtime(&time_);
if (tm) tm_ = *tm;
return lt.tm_;
}
-inline std::tm localtime(
- std::chrono::time_point<std::chrono::system_clock> time_point) {
- return localtime(std::chrono::system_clock::to_time_t(time_point));
+#if FMT_USE_LOCAL_TIME
+template <typename Duration>
+inline auto localtime(std::chrono::local_time<Duration> time) -> std::tm {
+ return localtime(
+ detail::to_time_t(std::chrono::current_zone()->to_sys(time)));
}
+#endif
/**
- Converts given time since epoch as ``std::time_t`` value into calendar time,
- expressed in Coordinated Universal Time (UTC). Unlike ``std::gmtime``, this
- function is thread-safe on most platforms.
+ * Converts given time since epoch as `std::time_t` value into calendar time,
+ * expressed in Coordinated Universal Time (UTC). Unlike `std::gmtime`, this
+ * function is thread-safe on most platforms.
*/
-inline std::tm gmtime(std::time_t time) {
+inline auto gmtime(std::time_t time) -> std::tm {
struct dispatcher {
std::time_t time_;
std::tm tm_;
dispatcher(std::time_t t) : time_(t) {}
- bool run() {
+ auto run() -> bool {
using namespace fmt::detail;
return handle(gmtime_r(&time_, &tm_));
}
- bool handle(std::tm* tm) { return tm != nullptr; }
+ auto handle(std::tm* tm) -> bool { return tm != nullptr; }
- bool handle(detail::null<>) {
+ auto handle(detail::null<>) -> bool {
using namespace fmt::detail;
return fallback(gmtime_s(&tm_, &time_));
}
- bool fallback(int res) { return res == 0; }
+ auto fallback(int res) -> bool { return res == 0; }
#if !FMT_MSC_VERSION
- bool fallback(detail::null<>) {
+ auto fallback(detail::null<>) -> bool {
std::tm* tm = std::gmtime(&time_);
if (tm) tm_ = *tm;
return tm != nullptr;
}
#endif
};
- dispatcher gt(time);
+ auto gt = dispatcher(time);
// Too big time values may be unsupported.
if (!gt.run()) FMT_THROW(format_error("time_t value out of range"));
return gt.tm_;
}
-inline std::tm gmtime(
- std::chrono::time_point<std::chrono::system_clock> time_point) {
- return gmtime(std::chrono::system_clock::to_time_t(time_point));
+template <typename Duration>
+inline auto gmtime(
+ std::chrono::time_point<std::chrono::system_clock, Duration> time_point)
+ -> std::tm {
+ return gmtime(detail::to_time_t(time_point));
}
-FMT_BEGIN_DETAIL_NAMESPACE
+namespace detail {
// Writes two-digit numbers a, b and c separated by sep to buf.
// The method by Pavel Novikov based on
}
}
-template <typename Period> FMT_CONSTEXPR inline const char* get_units() {
+template <typename Period>
+FMT_CONSTEXPR inline auto get_units() -> const char* {
if (std::is_same<Period, std::atto>::value) return "as";
if (std::is_same<Period, std::femto>::value) return "fs";
if (std::is_same<Period, std::pico>::value) return "ps";
if (std::is_same<Period, std::tera>::value) return "Ts";
if (std::is_same<Period, std::peta>::value) return "Ps";
if (std::is_same<Period, std::exa>::value) return "Es";
- if (std::is_same<Period, std::ratio<60>>::value) return "m";
+ if (std::is_same<Period, std::ratio<60>>::value) return "min";
if (std::is_same<Period, std::ratio<3600>>::value) return "h";
+ if (std::is_same<Period, std::ratio<86400>>::value) return "d";
return nullptr;
}
alternative
};
+// Glibc extensions for formatting numeric values.
+enum class pad_type {
+ // Pad a numeric result string with zeros (the default).
+ zero,
+ // Do not pad a numeric result string.
+ none,
+ // Pad a numeric result string with spaces.
+ space,
+};
+
+template <typename OutputIt>
+auto write_padding(OutputIt out, pad_type pad, int width) -> OutputIt {
+ if (pad == pad_type::none) return out;
+ return detail::fill_n(out, width, pad == pad_type::space ? ' ' : '0');
+}
+
+template <typename OutputIt>
+auto write_padding(OutputIt out, pad_type pad) -> OutputIt {
+ if (pad != pad_type::none) *out++ = pad == pad_type::space ? ' ' : '0';
+ return out;
+}
+
// Parses a put_time-like format string and invokes handler actions.
template <typename Char, typename Handler>
-FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin,
- const Char* end,
- Handler&& handler) {
+FMT_CONSTEXPR auto parse_chrono_format(const Char* begin, const Char* end,
+ Handler&& handler) -> const Char* {
+ if (begin == end || *begin == '}') return begin;
+ if (*begin != '%') FMT_THROW(format_error("invalid format"));
auto ptr = begin;
while (ptr != end) {
+ pad_type pad = pad_type::zero;
auto c = *ptr;
if (c == '}') break;
if (c != '%') {
if (begin != ptr) handler.on_text(begin, ptr);
++ptr; // consume '%'
if (ptr == end) FMT_THROW(format_error("invalid format"));
+ c = *ptr;
+ switch (c) {
+ case '_':
+ pad = pad_type::space;
+ ++ptr;
+ break;
+ case '-':
+ pad = pad_type::none;
+ ++ptr;
+ break;
+ }
+ if (ptr == end) FMT_THROW(format_error("invalid format"));
c = *ptr++;
switch (c) {
case '%':
break;
// Day of the year/month:
case 'U':
- handler.on_dec0_week_of_year(numeric_system::standard);
+ handler.on_dec0_week_of_year(numeric_system::standard, pad);
break;
case 'W':
- handler.on_dec1_week_of_year(numeric_system::standard);
+ handler.on_dec1_week_of_year(numeric_system::standard, pad);
break;
case 'V':
- handler.on_iso_week_of_year(numeric_system::standard);
+ handler.on_iso_week_of_year(numeric_system::standard, pad);
break;
case 'j':
handler.on_day_of_year();
break;
case 'd':
- handler.on_day_of_month(numeric_system::standard);
+ handler.on_day_of_month(numeric_system::standard, pad);
break;
case 'e':
- handler.on_day_of_month_space(numeric_system::standard);
+ handler.on_day_of_month(numeric_system::standard, pad_type::space);
break;
// Hour, minute, second:
case 'H':
- handler.on_24_hour(numeric_system::standard);
+ handler.on_24_hour(numeric_system::standard, pad);
break;
case 'I':
- handler.on_12_hour(numeric_system::standard);
+ handler.on_12_hour(numeric_system::standard, pad);
break;
case 'M':
- handler.on_minute(numeric_system::standard);
+ handler.on_minute(numeric_system::standard, pad);
break;
case 'S':
- handler.on_second(numeric_system::standard);
+ handler.on_second(numeric_system::standard, pad);
break;
// Other:
case 'c':
handler.on_duration_unit();
break;
case 'z':
- handler.on_utc_offset();
+ handler.on_utc_offset(numeric_system::standard);
break;
case 'Z':
handler.on_tz_name();
case 'X':
handler.on_loc_time(numeric_system::alternative);
break;
+ case 'z':
+ handler.on_utc_offset(numeric_system::alternative);
+ break;
default:
FMT_THROW(format_error("invalid format"));
}
handler.on_dec_month(numeric_system::alternative);
break;
case 'U':
- handler.on_dec0_week_of_year(numeric_system::alternative);
+ handler.on_dec0_week_of_year(numeric_system::alternative, pad);
break;
case 'W':
- handler.on_dec1_week_of_year(numeric_system::alternative);
+ handler.on_dec1_week_of_year(numeric_system::alternative, pad);
break;
case 'V':
- handler.on_iso_week_of_year(numeric_system::alternative);
+ handler.on_iso_week_of_year(numeric_system::alternative, pad);
break;
case 'd':
- handler.on_day_of_month(numeric_system::alternative);
+ handler.on_day_of_month(numeric_system::alternative, pad);
break;
case 'e':
- handler.on_day_of_month_space(numeric_system::alternative);
+ handler.on_day_of_month(numeric_system::alternative, pad_type::space);
break;
case 'w':
handler.on_dec0_weekday(numeric_system::alternative);
handler.on_dec1_weekday(numeric_system::alternative);
break;
case 'H':
- handler.on_24_hour(numeric_system::alternative);
+ handler.on_24_hour(numeric_system::alternative, pad);
break;
case 'I':
- handler.on_12_hour(numeric_system::alternative);
+ handler.on_12_hour(numeric_system::alternative, pad);
break;
case 'M':
- handler.on_minute(numeric_system::alternative);
+ handler.on_minute(numeric_system::alternative, pad);
break;
case 'S':
- handler.on_second(numeric_system::alternative);
+ handler.on_second(numeric_system::alternative, pad);
+ break;
+ case 'z':
+ handler.on_utc_offset(numeric_system::alternative);
break;
default:
FMT_THROW(format_error("invalid format"));
FMT_CONSTEXPR void on_abbr_month() { unsupported(); }
FMT_CONSTEXPR void on_full_month() { unsupported(); }
FMT_CONSTEXPR void on_dec_month(numeric_system) { unsupported(); }
- FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system) { unsupported(); }
- FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system) { unsupported(); }
- FMT_CONSTEXPR void on_iso_week_of_year(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system, pad_type) {
+ unsupported();
+ }
+ FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system, pad_type) {
+ unsupported();
+ }
+ FMT_CONSTEXPR void on_iso_week_of_year(numeric_system, pad_type) {
+ unsupported();
+ }
FMT_CONSTEXPR void on_day_of_year() { unsupported(); }
- FMT_CONSTEXPR void on_day_of_month(numeric_system) { unsupported(); }
- FMT_CONSTEXPR void on_day_of_month_space(numeric_system) { unsupported(); }
+ FMT_CONSTEXPR void on_day_of_month(numeric_system, pad_type) {
+ unsupported();
+ }
FMT_CONSTEXPR void on_24_hour(numeric_system) { unsupported(); }
FMT_CONSTEXPR void on_12_hour(numeric_system) { unsupported(); }
FMT_CONSTEXPR void on_minute(numeric_system) { unsupported(); }
FMT_CONSTEXPR void on_am_pm() { unsupported(); }
FMT_CONSTEXPR void on_duration_value() { unsupported(); }
FMT_CONSTEXPR void on_duration_unit() { unsupported(); }
- FMT_CONSTEXPR void on_utc_offset() { unsupported(); }
+ FMT_CONSTEXPR void on_utc_offset(numeric_system) { unsupported(); }
FMT_CONSTEXPR void on_tz_name() { unsupported(); }
};
FMT_CONSTEXPR void on_abbr_month() {}
FMT_CONSTEXPR void on_full_month() {}
FMT_CONSTEXPR void on_dec_month(numeric_system) {}
- FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system) {}
- FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system) {}
- FMT_CONSTEXPR void on_iso_week_of_year(numeric_system) {}
+ FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_iso_week_of_year(numeric_system, pad_type) {}
FMT_CONSTEXPR void on_day_of_year() {}
- FMT_CONSTEXPR void on_day_of_month(numeric_system) {}
- FMT_CONSTEXPR void on_day_of_month_space(numeric_system) {}
- FMT_CONSTEXPR void on_24_hour(numeric_system) {}
- FMT_CONSTEXPR void on_12_hour(numeric_system) {}
- FMT_CONSTEXPR void on_minute(numeric_system) {}
- FMT_CONSTEXPR void on_second(numeric_system) {}
+ FMT_CONSTEXPR void on_day_of_month(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_24_hour(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_12_hour(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_minute(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_second(numeric_system, pad_type) {}
FMT_CONSTEXPR void on_datetime(numeric_system) {}
FMT_CONSTEXPR void on_loc_date(numeric_system) {}
FMT_CONSTEXPR void on_loc_time(numeric_system) {}
FMT_CONSTEXPR void on_24_hour_time() {}
FMT_CONSTEXPR void on_iso_time() {}
FMT_CONSTEXPR void on_am_pm() {}
- FMT_CONSTEXPR void on_utc_offset() {}
+ FMT_CONSTEXPR void on_utc_offset(numeric_system) {}
FMT_CONSTEXPR void on_tz_name() {}
};
-inline const char* tm_wday_full_name(int wday) {
+inline auto tm_wday_full_name(int wday) -> const char* {
static constexpr const char* full_name_list[] = {
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday"};
return wday >= 0 && wday <= 6 ? full_name_list[wday] : "?";
}
-inline const char* tm_wday_short_name(int wday) {
+inline auto tm_wday_short_name(int wday) -> const char* {
static constexpr const char* short_name_list[] = {"Sun", "Mon", "Tue", "Wed",
"Thu", "Fri", "Sat"};
return wday >= 0 && wday <= 6 ? short_name_list[wday] : "???";
}
-inline const char* tm_mon_full_name(int mon) {
+inline auto tm_mon_full_name(int mon) -> const char* {
static constexpr const char* full_name_list[] = {
"January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"};
return mon >= 0 && mon <= 11 ? full_name_list[mon] : "?";
}
-inline const char* tm_mon_short_name(int mon) {
+inline auto tm_mon_short_name(int mon) -> const char* {
static constexpr const char* short_name_list[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
}
#endif
-template <typename OutputIt, typename Char> class tm_writer {
+// Converts value to Int and checks that it's in the range [0, upper).
+template <typename T, typename Int, FMT_ENABLE_IF(std::is_integral<T>::value)>
+inline auto to_nonnegative_int(T value, Int upper) -> Int {
+ if (!std::is_unsigned<Int>::value &&
+ (value < 0 || to_unsigned(value) > to_unsigned(upper))) {
+ FMT_THROW(fmt::format_error("chrono value is out of range"));
+ }
+ return static_cast<Int>(value);
+}
+template <typename T, typename Int, FMT_ENABLE_IF(!std::is_integral<T>::value)>
+inline auto to_nonnegative_int(T value, Int upper) -> Int {
+ auto int_value = static_cast<Int>(value);
+ if (int_value < 0 || value > static_cast<T>(upper))
+ FMT_THROW(format_error("invalid value"));
+ return int_value;
+}
+
+constexpr auto pow10(std::uint32_t n) -> long long {
+ return n == 0 ? 1 : 10 * pow10(n - 1);
+}
+
+// Counts the number of fractional digits in the range [0, 18] according to the
+// C++20 spec. If more than 18 fractional digits are required then returns 6 for
+// microseconds precision.
+template <long long Num, long long Den, int N = 0,
+ bool Enabled = (N < 19) && (Num <= max_value<long long>() / 10)>
+struct count_fractional_digits {
+ static constexpr int value =
+ Num % Den == 0 ? N : count_fractional_digits<Num * 10, Den, N + 1>::value;
+};
+
+// Base case that doesn't instantiate any more templates
+// in order to avoid overflow.
+template <long long Num, long long Den, int N>
+struct count_fractional_digits<Num, Den, N, false> {
+ static constexpr int value = (Num % Den == 0) ? N : 6;
+};
+
+// Format subseconds which are given as an integer type with an appropriate
+// number of digits.
+template <typename Char, typename OutputIt, typename Duration>
+void write_fractional_seconds(OutputIt& out, Duration d, int precision = -1) {
+ constexpr auto num_fractional_digits =
+ count_fractional_digits<Duration::period::num,
+ Duration::period::den>::value;
+
+ using subsecond_precision = std::chrono::duration<
+ typename std::common_type<typename Duration::rep,
+ std::chrono::seconds::rep>::type,
+ std::ratio<1, detail::pow10(num_fractional_digits)>>;
+
+ const auto fractional = d - fmt_duration_cast<std::chrono::seconds>(d);
+ const auto subseconds =
+ std::chrono::treat_as_floating_point<
+ typename subsecond_precision::rep>::value
+ ? fractional.count()
+ : fmt_duration_cast<subsecond_precision>(fractional).count();
+ auto n = static_cast<uint32_or_64_or_128_t<long long>>(subseconds);
+ const int num_digits = detail::count_digits(n);
+
+ int leading_zeroes = (std::max)(0, num_fractional_digits - num_digits);
+ if (precision < 0) {
+ FMT_ASSERT(!std::is_floating_point<typename Duration::rep>::value, "");
+ if (std::ratio_less<typename subsecond_precision::period,
+ std::chrono::seconds::period>::value) {
+ *out++ = '.';
+ out = detail::fill_n(out, leading_zeroes, '0');
+ out = format_decimal<Char>(out, n, num_digits).end;
+ }
+ } else if (precision > 0) {
+ *out++ = '.';
+ leading_zeroes = (std::min)(leading_zeroes, precision);
+ int remaining = precision - leading_zeroes;
+ out = detail::fill_n(out, leading_zeroes, '0');
+ if (remaining < num_digits) {
+ int num_truncated_digits = num_digits - remaining;
+ n /= to_unsigned(detail::pow10(to_unsigned(num_truncated_digits)));
+ if (n) {
+ out = format_decimal<Char>(out, n, remaining).end;
+ }
+ return;
+ }
+ if (n) {
+ out = format_decimal<Char>(out, n, num_digits).end;
+ remaining -= num_digits;
+ }
+ out = detail::fill_n(out, remaining, '0');
+ }
+}
+
+// Format subseconds which are given as a floating point type with an
+// appropriate number of digits. We cannot pass the Duration here, as we
+// explicitly need to pass the Rep value in the chrono_formatter.
+template <typename Duration>
+void write_floating_seconds(memory_buffer& buf, Duration duration,
+ int num_fractional_digits = -1) {
+ using rep = typename Duration::rep;
+ FMT_ASSERT(std::is_floating_point<rep>::value, "");
+
+ auto val = duration.count();
+
+ if (num_fractional_digits < 0) {
+ // For `std::round` with fallback to `round`:
+ // On some toolchains `std::round` is not available (e.g. GCC 6).
+ using namespace std;
+ num_fractional_digits =
+ count_fractional_digits<Duration::period::num,
+ Duration::period::den>::value;
+ if (num_fractional_digits < 6 && static_cast<rep>(round(val)) != val)
+ num_fractional_digits = 6;
+ }
+
+ fmt::format_to(std::back_inserter(buf), FMT_STRING("{:.{}f}"),
+ std::fmod(val * static_cast<rep>(Duration::period::num) /
+ static_cast<rep>(Duration::period::den),
+ static_cast<rep>(60)),
+ num_fractional_digits);
+}
+
+template <typename OutputIt, typename Char,
+ typename Duration = std::chrono::seconds>
+class tm_writer {
private:
static constexpr int days_per_week = 7;
const std::locale& loc_;
const bool is_classic_;
OutputIt out_;
+ const Duration* subsecs_;
const std::tm& tm_;
auto tm_sec() const noexcept -> int {
return static_cast<int>(l);
}
- // Algorithm:
- // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_the_week_number_from_a_month_and_day_of_the_month_or_ordinal_date
+ // Algorithm: https://en.wikipedia.org/wiki/ISO_week_date.
auto iso_year_weeks(long long curr_year) const noexcept -> int {
const auto prev_year = curr_year - 1;
const auto curr_p =
*out_++ = *d++;
*out_++ = *d;
}
+ void write2(int value, pad_type pad) {
+ unsigned int v = to_unsigned(value) % 100;
+ if (v >= 10) {
+ const char* d = digits2(v);
+ *out_++ = *d++;
+ *out_++ = *d;
+ } else {
+ out_ = detail::write_padding(out_, pad);
+ *out_++ = static_cast<char>('0' + v);
+ }
+ }
void write_year_extended(long long year) {
// At least 4 characters.
}
uint32_or_64_or_128_t<long long> n = to_unsigned(year);
const int num_digits = count_digits(n);
- if (width > num_digits) out_ = std::fill_n(out_, width - num_digits, '0');
+ if (width > num_digits)
+ out_ = detail::fill_n(out_, width - num_digits, '0');
out_ = format_decimal<Char>(out_, n, num_digits).end;
}
void write_year(long long year) {
}
}
- void write_utc_offset(long offset) {
+ void write_utc_offset(long offset, numeric_system ns) {
if (offset < 0) {
*out_++ = '-';
offset = -offset;
}
offset /= 60;
write2(static_cast<int>(offset / 60));
+ if (ns != numeric_system::standard) *out_++ = ':';
write2(static_cast<int>(offset % 60));
}
template <typename T, FMT_ENABLE_IF(has_member_data_tm_gmtoff<T>::value)>
- void format_utc_offset_impl(const T& tm) {
- write_utc_offset(tm.tm_gmtoff);
+ void format_utc_offset_impl(const T& tm, numeric_system ns) {
+ write_utc_offset(tm.tm_gmtoff, ns);
}
template <typename T, FMT_ENABLE_IF(!has_member_data_tm_gmtoff<T>::value)>
- void format_utc_offset_impl(const T& tm) {
+ void format_utc_offset_impl(const T& tm, numeric_system ns) {
#if defined(_WIN32) && defined(_UCRT)
# if FMT_USE_TZSET
tzset_once();
_get_dstbias(&dstbias);
offset += dstbias;
}
- write_utc_offset(-offset);
+ write_utc_offset(-offset, ns);
#else
- ignore_unused(tm);
- format_localized('z');
+ if (ns == numeric_system::standard) return format_localized('z');
+
+ // Extract timezone offset from timezone conversion functions.
+ std::tm gtm = tm;
+ std::time_t gt = std::mktime(>m);
+ std::tm ltm = gmtime(gt);
+ std::time_t lt = std::mktime(<m);
+ long offset = gt - lt;
+ write_utc_offset(offset, ns);
#endif
}
}
public:
- tm_writer(const std::locale& loc, OutputIt out, const std::tm& tm)
+ tm_writer(const std::locale& loc, OutputIt out, const std::tm& tm,
+ const Duration* subsecs = nullptr)
: loc_(loc),
is_classic_(loc_ == get_classic_locale()),
out_(out),
+ subsecs_(subsecs),
tm_(tm) {}
- OutputIt out() const { return out_; }
+ auto out() const -> OutputIt { return out_; }
FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
- out_ = copy_str<Char>(begin, end, out_);
+ out_ = copy<Char>(begin, end, out_);
}
void on_abbr_weekday() {
*out_++ = ' ';
on_abbr_month();
*out_++ = ' ';
- on_day_of_month_space(numeric_system::standard);
+ on_day_of_month(numeric_system::standard, pad_type::space);
*out_++ = ' ';
on_iso_time();
*out_++ = ' ';
write_digit2_separated(buf, to_unsigned(tm_mon() + 1),
to_unsigned(tm_mday()),
to_unsigned(split_year_lower(tm_year())), '/');
- out_ = copy_str<Char>(std::begin(buf), std::end(buf), out_);
+ out_ = copy<Char>(std::begin(buf), std::end(buf), out_);
}
void on_iso_date() {
auto year = tm_year();
write_digit2_separated(buf + 2, static_cast<unsigned>(year % 100),
to_unsigned(tm_mon() + 1), to_unsigned(tm_mday()),
'-');
- out_ = copy_str<Char>(std::begin(buf) + offset, std::end(buf), out_);
+ out_ = copy<Char>(std::begin(buf) + offset, std::end(buf), out_);
}
- void on_utc_offset() { format_utc_offset_impl(tm_); }
+ void on_utc_offset(numeric_system ns) { format_utc_offset_impl(tm_, ns); }
void on_tz_name() { format_tz_name_impl(tm_); }
void on_year(numeric_system ns) {
format_localized('m', 'O');
}
- void on_dec0_week_of_year(numeric_system ns) {
+ void on_dec0_week_of_year(numeric_system ns, pad_type pad) {
if (is_classic_ || ns == numeric_system::standard)
- return write2((tm_yday() + days_per_week - tm_wday()) / days_per_week);
+ return write2((tm_yday() + days_per_week - tm_wday()) / days_per_week,
+ pad);
format_localized('U', 'O');
}
- void on_dec1_week_of_year(numeric_system ns) {
+ void on_dec1_week_of_year(numeric_system ns, pad_type pad) {
if (is_classic_ || ns == numeric_system::standard) {
auto wday = tm_wday();
write2((tm_yday() + days_per_week -
(wday == 0 ? (days_per_week - 1) : (wday - 1))) /
- days_per_week);
+ days_per_week,
+ pad);
} else {
format_localized('W', 'O');
}
}
- void on_iso_week_of_year(numeric_system ns) {
+ void on_iso_week_of_year(numeric_system ns, pad_type pad) {
if (is_classic_ || ns == numeric_system::standard)
- return write2(tm_iso_week_of_year());
+ return write2(tm_iso_week_of_year(), pad);
format_localized('V', 'O');
}
write1(yday / 100);
write2(yday % 100);
}
- void on_day_of_month(numeric_system ns) {
- if (is_classic_ || ns == numeric_system::standard) return write2(tm_mday());
+ void on_day_of_month(numeric_system ns, pad_type pad) {
+ if (is_classic_ || ns == numeric_system::standard)
+ return write2(tm_mday(), pad);
format_localized('d', 'O');
}
- void on_day_of_month_space(numeric_system ns) {
- if (is_classic_ || ns == numeric_system::standard) {
- auto mday = to_unsigned(tm_mday()) % 100;
- const char* d2 = digits2(mday);
- *out_++ = mday < 10 ? ' ' : d2[0];
- *out_++ = d2[1];
- } else {
- format_localized('e', 'O');
- }
- }
- void on_24_hour(numeric_system ns) {
- if (is_classic_ || ns == numeric_system::standard) return write2(tm_hour());
+ void on_24_hour(numeric_system ns, pad_type pad) {
+ if (is_classic_ || ns == numeric_system::standard)
+ return write2(tm_hour(), pad);
format_localized('H', 'O');
}
- void on_12_hour(numeric_system ns) {
+ void on_12_hour(numeric_system ns, pad_type pad) {
if (is_classic_ || ns == numeric_system::standard)
- return write2(tm_hour12());
+ return write2(tm_hour12(), pad);
format_localized('I', 'O');
}
- void on_minute(numeric_system ns) {
- if (is_classic_ || ns == numeric_system::standard) return write2(tm_min());
+ void on_minute(numeric_system ns, pad_type pad) {
+ if (is_classic_ || ns == numeric_system::standard)
+ return write2(tm_min(), pad);
format_localized('M', 'O');
}
- void on_second(numeric_system ns) {
- if (is_classic_ || ns == numeric_system::standard) return write2(tm_sec());
- format_localized('S', 'O');
+
+ void on_second(numeric_system ns, pad_type pad) {
+ if (is_classic_ || ns == numeric_system::standard) {
+ write2(tm_sec(), pad);
+ if (subsecs_) {
+ if (std::is_floating_point<typename Duration::rep>::value) {
+ auto buf = memory_buffer();
+ write_floating_seconds(buf, *subsecs_);
+ if (buf.size() > 1) {
+ // Remove the leading "0", write something like ".123".
+ out_ = std::copy(buf.begin() + 1, buf.end(), out_);
+ }
+ } else {
+ write_fractional_seconds<Char>(out_, *subsecs_);
+ }
+ }
+ } else {
+ // Currently no formatting of subseconds when a locale is set.
+ format_localized('S', 'O');
+ }
}
void on_12_hour_time() {
char buf[8];
write_digit2_separated(buf, to_unsigned(tm_hour12()),
to_unsigned(tm_min()), to_unsigned(tm_sec()), ':');
- out_ = copy_str<Char>(std::begin(buf), std::end(buf), out_);
+ out_ = copy<Char>(std::begin(buf), std::end(buf), out_);
*out_++ = ' ';
on_am_pm();
} else {
write2(tm_min());
}
void on_iso_time() {
- char buf[8];
- write_digit2_separated(buf, to_unsigned(tm_hour()), to_unsigned(tm_min()),
- to_unsigned(tm_sec()), ':');
- out_ = copy_str<Char>(std::begin(buf), std::end(buf), out_);
+ on_24_hour_time();
+ *out_++ = ':';
+ on_second(numeric_system::standard, pad_type::zero);
}
void on_am_pm() {
};
struct chrono_format_checker : null_chrono_spec_handler<chrono_format_checker> {
+ bool has_precision_integral = false;
+
FMT_NORETURN void unsupported() { FMT_THROW(format_error("no date")); }
template <typename Char>
FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
- FMT_CONSTEXPR void on_24_hour(numeric_system) {}
- FMT_CONSTEXPR void on_12_hour(numeric_system) {}
- FMT_CONSTEXPR void on_minute(numeric_system) {}
- FMT_CONSTEXPR void on_second(numeric_system) {}
+ FMT_CONSTEXPR void on_day_of_year() {}
+ FMT_CONSTEXPR void on_24_hour(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_12_hour(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_minute(numeric_system, pad_type) {}
+ FMT_CONSTEXPR void on_second(numeric_system, pad_type) {}
FMT_CONSTEXPR void on_12_hour_time() {}
FMT_CONSTEXPR void on_24_hour_time() {}
FMT_CONSTEXPR void on_iso_time() {}
FMT_CONSTEXPR void on_am_pm() {}
- FMT_CONSTEXPR void on_duration_value() {}
+ FMT_CONSTEXPR void on_duration_value() const {
+ if (has_precision_integral) {
+ FMT_THROW(format_error("precision not allowed for this argument type"));
+ }
+ }
FMT_CONSTEXPR void on_duration_unit() {}
};
-template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline bool isfinite(T) {
+template <typename T,
+ FMT_ENABLE_IF(std::is_integral<T>::value&& has_isfinite<T>::value)>
+inline auto isfinite(T) -> bool {
return true;
}
-// Converts value to Int and checks that it's in the range [0, upper).
-template <typename T, typename Int, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline Int to_nonnegative_int(T value, Int upper) {
- FMT_ASSERT(std::is_unsigned<Int>::value ||
- (value >= 0 && to_unsigned(value) <= to_unsigned(upper)),
- "invalid value");
- (void)upper;
- return static_cast<Int>(value);
-}
-template <typename T, typename Int, FMT_ENABLE_IF(!std::is_integral<T>::value)>
-inline Int to_nonnegative_int(T value, Int upper) {
- if (value < 0 || value > static_cast<T>(upper))
- FMT_THROW(format_error("invalid value"));
- return static_cast<Int>(value);
-}
-
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline T mod(T x, int y) {
+inline auto mod(T x, int y) -> T {
return x % static_cast<T>(y);
}
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
-inline T mod(T x, int y) {
+inline auto mod(T x, int y) -> T {
return std::fmod(x, static_cast<T>(y));
}
using type = typename std::make_unsigned<T>::type;
};
-#if FMT_SAFE_DURATION_CAST
-// throwing version of safe_duration_cast
-template <typename To, typename FromRep, typename FromPeriod>
-To fmt_safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) {
- int ec;
- To to = safe_duration_cast::safe_duration_cast<To>(from, ec);
- if (ec) FMT_THROW(format_error("cannot format duration"));
- return to;
-}
-#endif
-
template <typename Rep, typename Period,
FMT_ENABLE_IF(std::is_integral<Rep>::value)>
-inline std::chrono::duration<Rep, std::milli> get_milliseconds(
- std::chrono::duration<Rep, Period> d) {
+inline auto get_milliseconds(std::chrono::duration<Rep, Period> d)
+ -> std::chrono::duration<Rep, std::milli> {
// this may overflow and/or the result may not fit in the
// target type.
#if FMT_SAFE_DURATION_CAST
using CommonSecondsType =
typename std::common_type<decltype(d), std::chrono::seconds>::type;
- const auto d_as_common = fmt_safe_duration_cast<CommonSecondsType>(d);
+ const auto d_as_common = fmt_duration_cast<CommonSecondsType>(d);
const auto d_as_whole_seconds =
- fmt_safe_duration_cast<std::chrono::seconds>(d_as_common);
+ fmt_duration_cast<std::chrono::seconds>(d_as_common);
// this conversion should be nonproblematic
const auto diff = d_as_common - d_as_whole_seconds;
const auto ms =
- fmt_safe_duration_cast<std::chrono::duration<Rep, std::milli>>(diff);
+ fmt_duration_cast<std::chrono::duration<Rep, std::milli>>(diff);
return ms;
#else
- auto s = std::chrono::duration_cast<std::chrono::seconds>(d);
- return std::chrono::duration_cast<std::chrono::milliseconds>(d - s);
+ auto s = fmt_duration_cast<std::chrono::seconds>(d);
+ return fmt_duration_cast<std::chrono::milliseconds>(d - s);
#endif
}
-// Counts the number of fractional digits in the range [0, 18] according to the
-// C++20 spec. If more than 18 fractional digits are required then returns 6 for
-// microseconds precision.
-template <long long Num, long long Den, int N = 0,
- bool Enabled = (N < 19) && (Num <= max_value<long long>() / 10)>
-struct count_fractional_digits {
- static constexpr int value =
- Num % Den == 0 ? N : count_fractional_digits<Num * 10, Den, N + 1>::value;
-};
-
-// Base case that doesn't instantiate any more templates
-// in order to avoid overflow.
-template <long long Num, long long Den, int N>
-struct count_fractional_digits<Num, Den, N, false> {
- static constexpr int value = (Num % Den == 0) ? N : 6;
-};
-
-constexpr long long pow10(std::uint32_t n) {
- return n == 0 ? 1 : 10 * pow10(n - 1);
-}
-
-template <class Rep, class Period,
- FMT_ENABLE_IF(std::numeric_limits<Rep>::is_signed)>
-constexpr std::chrono::duration<Rep, Period> abs(
- std::chrono::duration<Rep, Period> d) {
- // We need to compare the duration using the count() method directly
- // due to a compiler bug in clang-11 regarding the spaceship operator,
- // when -Wzero-as-null-pointer-constant is enabled.
- // In clang-12 the bug has been fixed. See
- // https://bugs.llvm.org/show_bug.cgi?id=46235 and the reproducible example:
- // https://www.godbolt.org/z/Knbb5joYx.
- return d.count() >= d.zero().count() ? d : -d;
-}
-
-template <class Rep, class Period,
- FMT_ENABLE_IF(!std::numeric_limits<Rep>::is_signed)>
-constexpr std::chrono::duration<Rep, Period> abs(
- std::chrono::duration<Rep, Period> d) {
- return d;
-}
-
template <typename Char, typename Rep, typename OutputIt,
FMT_ENABLE_IF(std::is_integral<Rep>::value)>
-OutputIt format_duration_value(OutputIt out, Rep val, int) {
+auto format_duration_value(OutputIt out, Rep val, int) -> OutputIt {
return write<Char>(out, val);
}
template <typename Char, typename Rep, typename OutputIt,
FMT_ENABLE_IF(std::is_floating_point<Rep>::value)>
-OutputIt format_duration_value(OutputIt out, Rep val, int precision) {
- auto specs = basic_format_specs<Char>();
+auto format_duration_value(OutputIt out, Rep val, int precision) -> OutputIt {
+ auto specs = format_specs();
specs.precision = precision;
- specs.type = precision >= 0 ? presentation_type::fixed_lower
- : presentation_type::general_lower;
+ specs.type =
+ precision >= 0 ? presentation_type::fixed : presentation_type::general;
return write<Char>(out, val, specs);
}
template <typename Char, typename OutputIt>
-OutputIt copy_unit(string_view unit, OutputIt out, Char) {
+auto copy_unit(string_view unit, OutputIt out, Char) -> OutputIt {
return std::copy(unit.begin(), unit.end(), out);
}
template <typename OutputIt>
-OutputIt copy_unit(string_view unit, OutputIt out, wchar_t) {
+auto copy_unit(string_view unit, OutputIt out, wchar_t) -> OutputIt {
// This works when wchar_t is UTF-32 because units only contain characters
// that have the same representation in UTF-16 and UTF-32.
utf8_to_utf16 u(unit);
}
template <typename Char, typename Period, typename OutputIt>
-OutputIt format_duration_unit(OutputIt out) {
+auto format_duration_unit(OutputIt out) -> OutputIt {
if (const char* unit = get_units<Period>())
return copy_unit(string_view(unit), out, Char());
*out++ = '[';
public:
get_locale(bool localized, locale_ref loc) : has_locale_(localized) {
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
if (localized)
::new (&locale_) std::locale(loc.template get<std::locale>());
+#endif
}
~get_locale() {
if (has_locale_) locale_.~locale();
// this may overflow and/or the result may not fit in the
// target type.
-#if FMT_SAFE_DURATION_CAST
// might need checked conversion (rep!=Rep)
- auto tmpval = std::chrono::duration<rep, Period>(val);
- s = fmt_safe_duration_cast<seconds>(tmpval);
-#else
- s = std::chrono::duration_cast<seconds>(
- std::chrono::duration<rep, Period>(val));
-#endif
+ s = fmt_duration_cast<seconds>(std::chrono::duration<rep, Period>(val));
}
// returns true if nan or inf, writes to out.
- bool handle_nan_inf() {
+ auto handle_nan_inf() -> bool {
if (isfinite(val)) {
return false;
}
return true;
}
- Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); }
+ auto days() const -> Rep { return static_cast<Rep>(s.count() / 86400); }
+ auto hour() const -> Rep {
+ return static_cast<Rep>(mod((s.count() / 3600), 24));
+ }
- Rep hour12() const {
+ auto hour12() const -> Rep {
Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12));
return hour <= 0 ? 12 : hour;
}
- Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); }
- Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); }
+ auto minute() const -> Rep {
+ return static_cast<Rep>(mod((s.count() / 60), 60));
+ }
+ auto second() const -> Rep { return static_cast<Rep>(mod(s.count(), 60)); }
- std::tm time() const {
+ auto time() const -> std::tm {
auto time = std::tm();
time.tm_hour = to_nonnegative_int(hour(), 24);
time.tm_min = to_nonnegative_int(minute(), 60);
}
}
- void write(Rep value, int width) {
+ void write(Rep value, int width, pad_type pad = pad_type::zero) {
write_sign();
if (isnan(value)) return write_nan();
uint32_or_64_or_128_t<int> n =
to_unsigned(to_nonnegative_int(value, max_value<int>()));
int num_digits = detail::count_digits(n);
- if (width > num_digits) out = std::fill_n(out, width - num_digits, '0');
- out = format_decimal<char_type>(out, n, num_digits).end;
- }
-
- template <typename Duration> void write_fractional_seconds(Duration d) {
- FMT_ASSERT(!std::is_floating_point<typename Duration::rep>::value, "");
- constexpr auto num_fractional_digits =
- count_fractional_digits<Duration::period::num,
- Duration::period::den>::value;
-
- using subsecond_precision = std::chrono::duration<
- typename std::common_type<typename Duration::rep,
- std::chrono::seconds::rep>::type,
- std::ratio<1, detail::pow10(num_fractional_digits)>>;
- if (std::ratio_less<typename subsecond_precision::period,
- std::chrono::seconds::period>::value) {
- *out++ = '.';
- auto fractional =
- detail::abs(d) - std::chrono::duration_cast<std::chrono::seconds>(d);
- auto subseconds =
- std::chrono::treat_as_floating_point<
- typename subsecond_precision::rep>::value
- ? fractional.count()
- : std::chrono::duration_cast<subsecond_precision>(fractional)
- .count();
- uint32_or_64_or_128_t<long long> n =
- to_unsigned(to_nonnegative_int(subseconds, max_value<long long>()));
- int num_digits = detail::count_digits(n);
- if (num_fractional_digits > num_digits)
- out = std::fill_n(out, num_fractional_digits - num_digits, '0');
- out = format_decimal<char_type>(out, n, num_digits).end;
+ if (width > num_digits) {
+ out = detail::write_padding(out, pad, width - num_digits);
}
+ out = format_decimal<char_type>(out, n, num_digits).end;
}
void write_nan() { std::copy_n("nan", 3, out); }
void on_loc_time(numeric_system) {}
void on_us_date() {}
void on_iso_date() {}
- void on_utc_offset() {}
+ void on_utc_offset(numeric_system) {}
void on_tz_name() {}
void on_year(numeric_system) {}
void on_short_year(numeric_system) {}
void on_iso_week_based_year() {}
void on_iso_week_based_short_year() {}
void on_dec_month(numeric_system) {}
- void on_dec0_week_of_year(numeric_system) {}
- void on_dec1_week_of_year(numeric_system) {}
- void on_iso_week_of_year(numeric_system) {}
- void on_day_of_year() {}
- void on_day_of_month(numeric_system) {}
- void on_day_of_month_space(numeric_system) {}
-
- void on_24_hour(numeric_system ns) {
+ void on_dec0_week_of_year(numeric_system, pad_type) {}
+ void on_dec1_week_of_year(numeric_system, pad_type) {}
+ void on_iso_week_of_year(numeric_system, pad_type) {}
+ void on_day_of_month(numeric_system, pad_type) {}
+
+ void on_day_of_year() {
if (handle_nan_inf()) return;
+ write(days(), 0);
+ }
- if (ns == numeric_system::standard) return write(hour(), 2);
+ void on_24_hour(numeric_system ns, pad_type pad) {
+ if (handle_nan_inf()) return;
+
+ if (ns == numeric_system::standard) return write(hour(), 2, pad);
auto time = tm();
time.tm_hour = to_nonnegative_int(hour(), 24);
- format_tm(time, &tm_writer_type::on_24_hour, ns);
+ format_tm(time, &tm_writer_type::on_24_hour, ns, pad);
}
- void on_12_hour(numeric_system ns) {
+ void on_12_hour(numeric_system ns, pad_type pad) {
if (handle_nan_inf()) return;
- if (ns == numeric_system::standard) return write(hour12(), 2);
+ if (ns == numeric_system::standard) return write(hour12(), 2, pad);
auto time = tm();
time.tm_hour = to_nonnegative_int(hour12(), 12);
- format_tm(time, &tm_writer_type::on_12_hour, ns);
+ format_tm(time, &tm_writer_type::on_12_hour, ns, pad);
}
- void on_minute(numeric_system ns) {
+ void on_minute(numeric_system ns, pad_type pad) {
if (handle_nan_inf()) return;
- if (ns == numeric_system::standard) return write(minute(), 2);
+ if (ns == numeric_system::standard) return write(minute(), 2, pad);
auto time = tm();
time.tm_min = to_nonnegative_int(minute(), 60);
- format_tm(time, &tm_writer_type::on_minute, ns);
+ format_tm(time, &tm_writer_type::on_minute, ns, pad);
}
- void on_second(numeric_system ns) {
+ void on_second(numeric_system ns, pad_type pad) {
if (handle_nan_inf()) return;
if (ns == numeric_system::standard) {
if (std::is_floating_point<rep>::value) {
- constexpr auto num_fractional_digits =
- count_fractional_digits<Period::num, Period::den>::value;
auto buf = memory_buffer();
- format_to(std::back_inserter(buf), runtime("{:.{}f}"),
- std::fmod(val * static_cast<rep>(Period::num) /
- static_cast<rep>(Period::den),
- static_cast<rep>(60)),
- num_fractional_digits);
+ write_floating_seconds(buf, std::chrono::duration<rep, Period>(val),
+ precision);
if (negative) *out++ = '-';
- if (buf.size() < 2 || buf[1] == '.') *out++ = '0';
+ if (buf.size() < 2 || buf[1] == '.') {
+ out = detail::write_padding(out, pad);
+ }
out = std::copy(buf.begin(), buf.end(), out);
} else {
- write(second(), 2);
- write_fractional_seconds(std::chrono::duration<rep, Period>(val));
+ write(second(), 2, pad);
+ write_fractional_seconds<char_type>(
+ out, std::chrono::duration<rep, Period>(val), precision);
}
return;
}
auto time = tm();
time.tm_sec = to_nonnegative_int(second(), 60);
- format_tm(time, &tm_writer_type::on_second, ns);
+ format_tm(time, &tm_writer_type::on_second, ns, pad);
}
void on_12_hour_time() {
on_24_hour_time();
*out++ = ':';
if (handle_nan_inf()) return;
- on_second(numeric_system::standard);
+ on_second(numeric_system::standard, pad_type::zero);
}
void on_am_pm() {
}
};
-FMT_END_DETAIL_NAMESPACE
+} // namespace detail
#if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907
using weekday = std::chrono::weekday;
+using day = std::chrono::day;
+using month = std::chrono::month;
+using year = std::chrono::year;
+using year_month_day = std::chrono::year_month_day;
#else
// A fallback version of weekday.
class weekday {
private:
- unsigned char value;
+ unsigned char value_;
public:
weekday() = default;
- explicit constexpr weekday(unsigned wd) noexcept
- : value(static_cast<unsigned char>(wd != 7 ? wd : 0)) {}
- constexpr unsigned c_encoding() const noexcept { return value; }
+ constexpr explicit weekday(unsigned wd) noexcept
+ : value_(static_cast<unsigned char>(wd != 7 ? wd : 0)) {}
+ constexpr auto c_encoding() const noexcept -> unsigned { return value_; }
+};
+
+class day {
+ private:
+ unsigned char value_;
+
+ public:
+ day() = default;
+ constexpr explicit day(unsigned d) noexcept
+ : value_(static_cast<unsigned char>(d)) {}
+ constexpr explicit operator unsigned() const noexcept { return value_; }
+};
+
+class month {
+ private:
+ unsigned char value_;
+
+ public:
+ month() = default;
+ constexpr explicit month(unsigned m) noexcept
+ : value_(static_cast<unsigned char>(m)) {}
+ constexpr explicit operator unsigned() const noexcept { return value_; }
+};
+
+class year {
+ private:
+ int value_;
+
+ public:
+ year() = default;
+ constexpr explicit year(int y) noexcept : value_(y) {}
+ constexpr explicit operator int() const noexcept { return value_; }
};
-class year_month_day {};
+class year_month_day {
+ private:
+ fmt::year year_;
+ fmt::month month_;
+ fmt::day day_;
+
+ public:
+ year_month_day() = default;
+ constexpr year_month_day(const year& y, const month& m, const day& d) noexcept
+ : year_(y), month_(m), day_(d) {}
+ constexpr auto year() const noexcept -> fmt::year { return year_; }
+ constexpr auto month() const noexcept -> fmt::month { return month_; }
+ constexpr auto day() const noexcept -> fmt::day { return day_; }
+};
#endif
-// A rudimentary weekday formatter.
-template <typename Char> struct formatter<weekday, Char> {
+template <typename Char>
+struct formatter<weekday, Char> : private formatter<std::tm, Char> {
private:
- bool localized = false;
+ bool localized_ = false;
+ bool use_tm_formatter_ = false;
public:
FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
-> decltype(ctx.begin()) {
- auto begin = ctx.begin(), end = ctx.end();
- if (begin != end && *begin == 'L') {
- ++begin;
- localized = true;
+ auto it = ctx.begin(), end = ctx.end();
+ if (it != end && *it == 'L') {
+ ++it;
+ localized_ = true;
+ return it;
}
- return begin;
+ use_tm_formatter_ = it != end && *it != '}';
+ return use_tm_formatter_ ? formatter<std::tm, Char>::parse(ctx) : it;
}
template <typename FormatContext>
auto format(weekday wd, FormatContext& ctx) const -> decltype(ctx.out()) {
auto time = std::tm();
time.tm_wday = static_cast<int>(wd.c_encoding());
- detail::get_locale loc(localized, ctx.locale());
+ if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
+ detail::get_locale loc(localized_, ctx.locale());
auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
w.on_abbr_weekday();
return w.out();
}
};
-template <typename Rep, typename Period, typename Char>
-struct formatter<std::chrono::duration<Rep, Period>, Char> {
+template <typename Char>
+struct formatter<day, Char> : private formatter<std::tm, Char> {
private:
- basic_format_specs<Char> specs;
- int precision = -1;
- using arg_ref_type = detail::arg_ref<Char>;
- arg_ref_type width_ref;
- arg_ref_type precision_ref;
- bool localized = false;
- basic_string_view<Char> format_str;
- using duration = std::chrono::duration<Rep, Period>;
+ bool use_tm_formatter_ = false;
- struct spec_handler {
- formatter& f;
- basic_format_parse_context<Char>& context;
- basic_string_view<Char> format_str;
+ public:
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ auto it = ctx.begin(), end = ctx.end();
+ use_tm_formatter_ = it != end && *it != '}';
+ return use_tm_formatter_ ? formatter<std::tm, Char>::parse(ctx) : it;
+ }
- template <typename Id> FMT_CONSTEXPR arg_ref_type make_arg_ref(Id arg_id) {
- context.check_arg_id(arg_id);
- return arg_ref_type(arg_id);
- }
+ template <typename FormatContext>
+ auto format(day d, FormatContext& ctx) const -> decltype(ctx.out()) {
+ auto time = std::tm();
+ time.tm_mday = static_cast<int>(static_cast<unsigned>(d));
+ if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
+ detail::get_locale loc(false, ctx.locale());
+ auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
+ w.on_day_of_month(detail::numeric_system::standard, detail::pad_type::zero);
+ return w.out();
+ }
+};
- FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<Char> arg_id) {
- context.check_arg_id(arg_id);
- return arg_ref_type(arg_id);
- }
+template <typename Char>
+struct formatter<month, Char> : private formatter<std::tm, Char> {
+ private:
+ bool localized_ = false;
+ bool use_tm_formatter_ = false;
- FMT_CONSTEXPR arg_ref_type make_arg_ref(detail::auto_id) {
- return arg_ref_type(context.next_arg_id());
+ public:
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ auto it = ctx.begin(), end = ctx.end();
+ if (it != end && *it == 'L') {
+ ++it;
+ localized_ = true;
+ return it;
}
+ use_tm_formatter_ = it != end && *it != '}';
+ return use_tm_formatter_ ? formatter<std::tm, Char>::parse(ctx) : it;
+ }
- void on_error(const char* msg) { FMT_THROW(format_error(msg)); }
- FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
- f.specs.fill = fill;
- }
- FMT_CONSTEXPR void on_align(align_t align) { f.specs.align = align; }
- FMT_CONSTEXPR void on_width(int width) { f.specs.width = width; }
- FMT_CONSTEXPR void on_precision(int _precision) {
- f.precision = _precision;
- }
- FMT_CONSTEXPR void end_precision() {}
+ template <typename FormatContext>
+ auto format(month m, FormatContext& ctx) const -> decltype(ctx.out()) {
+ auto time = std::tm();
+ time.tm_mon = static_cast<int>(static_cast<unsigned>(m)) - 1;
+ if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
+ detail::get_locale loc(localized_, ctx.locale());
+ auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
+ w.on_abbr_month();
+ return w.out();
+ }
+};
- template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
- f.width_ref = make_arg_ref(arg_id);
- }
+template <typename Char>
+struct formatter<year, Char> : private formatter<std::tm, Char> {
+ private:
+ bool use_tm_formatter_ = false;
- template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
- f.precision_ref = make_arg_ref(arg_id);
- }
- };
+ public:
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ auto it = ctx.begin(), end = ctx.end();
+ use_tm_formatter_ = it != end && *it != '}';
+ return use_tm_formatter_ ? formatter<std::tm, Char>::parse(ctx) : it;
+ }
- using iterator = typename basic_format_parse_context<Char>::iterator;
- struct parse_range {
- iterator begin;
- iterator end;
- };
+ template <typename FormatContext>
+ auto format(year y, FormatContext& ctx) const -> decltype(ctx.out()) {
+ auto time = std::tm();
+ time.tm_year = static_cast<int>(y) - 1900;
+ if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
+ detail::get_locale loc(false, ctx.locale());
+ auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
+ w.on_year(detail::numeric_system::standard);
+ return w.out();
+ }
+};
- FMT_CONSTEXPR parse_range do_parse(basic_format_parse_context<Char>& ctx) {
- auto begin = ctx.begin(), end = ctx.end();
- if (begin == end || *begin == '}') return {begin, begin};
- spec_handler handler{*this, ctx, format_str};
- begin = detail::parse_align(begin, end, handler);
- if (begin == end) return {begin, begin};
- begin = detail::parse_width(begin, end, handler);
- if (begin == end) return {begin, begin};
- if (*begin == '.') {
- if (std::is_floating_point<Rep>::value)
- begin = detail::parse_precision(begin, end, handler);
- else
- handler.on_error("precision not allowed for this argument type");
- }
- if (begin != end && *begin == 'L') {
- ++begin;
- localized = true;
- }
- end = detail::parse_chrono_format(begin, end,
- detail::chrono_format_checker());
- return {begin, end};
+template <typename Char>
+struct formatter<year_month_day, Char> : private formatter<std::tm, Char> {
+ private:
+ bool use_tm_formatter_ = false;
+
+ public:
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ auto it = ctx.begin(), end = ctx.end();
+ use_tm_formatter_ = it != end && *it != '}';
+ return use_tm_formatter_ ? formatter<std::tm, Char>::parse(ctx) : it;
}
+ template <typename FormatContext>
+ auto format(year_month_day val, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ auto time = std::tm();
+ time.tm_year = static_cast<int>(val.year()) - 1900;
+ time.tm_mon = static_cast<int>(static_cast<unsigned>(val.month())) - 1;
+ time.tm_mday = static_cast<int>(static_cast<unsigned>(val.day()));
+ if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
+ detail::get_locale loc(true, ctx.locale());
+ auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
+ w.on_iso_date();
+ return w.out();
+ }
+};
+
+template <typename Rep, typename Period, typename Char>
+struct formatter<std::chrono::duration<Rep, Period>, Char> {
+ private:
+ format_specs specs_;
+ detail::arg_ref<Char> width_ref_;
+ detail::arg_ref<Char> precision_ref_;
+ bool localized_ = false;
+ basic_string_view<Char> format_str_;
+
public:
FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
-> decltype(ctx.begin()) {
- auto range = do_parse(ctx);
- format_str = basic_string_view<Char>(
- &*range.begin, detail::to_unsigned(range.end - range.begin));
- return range.end;
+ auto it = ctx.begin(), end = ctx.end();
+ if (it == end || *it == '}') return it;
+
+ it = detail::parse_align(it, end, specs_);
+ if (it == end) return it;
+
+ it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx);
+ if (it == end) return it;
+
+ auto checker = detail::chrono_format_checker();
+ if (*it == '.') {
+ checker.has_precision_integral = !std::is_floating_point<Rep>::value;
+ it = detail::parse_precision(it, end, specs_.precision, precision_ref_,
+ ctx);
+ }
+ if (it != end && *it == 'L') {
+ localized_ = true;
+ ++it;
+ }
+ end = detail::parse_chrono_format(it, end, checker);
+ format_str_ = {it, detail::to_unsigned(end - it)};
+ return end;
}
template <typename FormatContext>
- auto format(const duration& d, FormatContext& ctx) const
+ auto format(std::chrono::duration<Rep, Period> d, FormatContext& ctx) const
-> decltype(ctx.out()) {
- auto specs_copy = specs;
- auto precision_copy = precision;
- auto begin = format_str.begin(), end = format_str.end();
+ auto specs = specs_;
+ auto precision = specs.precision;
+ specs.precision = -1;
+ auto begin = format_str_.begin(), end = format_str_.end();
// As a possible future optimization, we could avoid extra copying if width
// is not specified.
- basic_memory_buffer<Char> buf;
+ auto buf = basic_memory_buffer<Char>();
auto out = std::back_inserter(buf);
- detail::handle_dynamic_spec<detail::width_checker>(specs_copy.width,
- width_ref, ctx);
- detail::handle_dynamic_spec<detail::precision_checker>(precision_copy,
- precision_ref, ctx);
+ detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref_,
+ ctx);
+ detail::handle_dynamic_spec<detail::precision_checker>(precision,
+ precision_ref_, ctx);
if (begin == end || *begin == '}') {
- out = detail::format_duration_value<Char>(out, d.count(), precision_copy);
+ out = detail::format_duration_value<Char>(out, d.count(), precision);
detail::format_duration_unit<Char, Period>(out);
} else {
- detail::chrono_formatter<FormatContext, decltype(out), Rep, Period> f(
- ctx, out, d);
- f.precision = precision_copy;
- f.localized = localized;
+ using chrono_formatter =
+ detail::chrono_formatter<FormatContext, decltype(out), Rep, Period>;
+ auto f = chrono_formatter(ctx, out, d);
+ f.precision = precision;
+ f.localized = localized_;
detail::parse_chrono_format(begin, end, f);
}
return detail::write(
- ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs_copy);
+ ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs);
}
};
struct formatter<std::chrono::time_point<std::chrono::system_clock, Duration>,
Char> : formatter<std::tm, Char> {
FMT_CONSTEXPR formatter() {
- basic_string_view<Char> default_specs =
- detail::string_literal<Char, '%', 'F', ' ', '%', 'T'>{};
- this->do_parse(default_specs.begin(), default_specs.end());
+ this->format_str_ = detail::string_literal<Char, '%', 'F', ' ', '%', 'T'>{};
}
template <typename FormatContext>
- auto format(std::chrono::time_point<std::chrono::system_clock> val,
+ auto format(std::chrono::time_point<std::chrono::system_clock, Duration> val,
FormatContext& ctx) const -> decltype(ctx.out()) {
+ std::tm tm = gmtime(val);
+ using period = typename Duration::period;
+ if (detail::const_check(
+ period::num == 1 && period::den == 1 &&
+ !std::is_floating_point<typename Duration::rep>::value)) {
+ return formatter<std::tm, Char>::format(tm, ctx);
+ }
+ Duration epoch = val.time_since_epoch();
+ Duration subsecs = detail::fmt_duration_cast<Duration>(
+ epoch - detail::fmt_duration_cast<std::chrono::seconds>(epoch));
+ if (subsecs.count() < 0) {
+ auto second =
+ detail::fmt_duration_cast<Duration>(std::chrono::seconds(1));
+ if (tm.tm_sec != 0)
+ --tm.tm_sec;
+ else
+ tm = gmtime(val - second);
+ subsecs += detail::fmt_duration_cast<Duration>(std::chrono::seconds(1));
+ }
+ return formatter<std::tm, Char>::do_format(tm, ctx, &subsecs);
+ }
+};
+
+#if FMT_USE_LOCAL_TIME
+template <typename Char, typename Duration>
+struct formatter<std::chrono::local_time<Duration>, Char>
+ : formatter<std::tm, Char> {
+ FMT_CONSTEXPR formatter() {
+ this->format_str_ = detail::string_literal<Char, '%', 'F', ' ', '%', 'T'>{};
+ }
+
+ template <typename FormatContext>
+ auto format(std::chrono::local_time<Duration> val, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ using period = typename Duration::period;
+ if (period::num != 1 || period::den != 1 ||
+ std::is_floating_point<typename Duration::rep>::value) {
+ const auto epoch = val.time_since_epoch();
+ const auto subsecs = detail::fmt_duration_cast<Duration>(
+ epoch - detail::fmt_duration_cast<std::chrono::seconds>(epoch));
+
+ return formatter<std::tm, Char>::do_format(localtime(val), ctx, &subsecs);
+ }
+
return formatter<std::tm, Char>::format(localtime(val), ctx);
}
};
+#endif
+
+#if FMT_USE_UTC_TIME
+template <typename Char, typename Duration>
+struct formatter<std::chrono::time_point<std::chrono::utc_clock, Duration>,
+ Char>
+ : formatter<std::chrono::time_point<std::chrono::system_clock, Duration>,
+ Char> {
+ template <typename FormatContext>
+ auto format(std::chrono::time_point<std::chrono::utc_clock, Duration> val,
+ FormatContext& ctx) const -> decltype(ctx.out()) {
+ return formatter<
+ std::chrono::time_point<std::chrono::system_clock, Duration>,
+ Char>::format(std::chrono::utc_clock::to_sys(val), ctx);
+ }
+};
+#endif
template <typename Char> struct formatter<std::tm, Char> {
private:
- enum class spec {
- unknown,
- year_month_day,
- hh_mm_ss,
- };
- spec spec_ = spec::unknown;
- basic_string_view<Char> specs;
+ format_specs specs_;
+ detail::arg_ref<Char> width_ref_;
protected:
- template <typename It> FMT_CONSTEXPR auto do_parse(It begin, It end) -> It {
- if (begin != end && *begin == ':') ++begin;
- end = detail::parse_chrono_format(begin, end, detail::tm_format_checker());
- // Replace default spec only if the new spec is not empty.
- if (end != begin) specs = {begin, detail::to_unsigned(end - begin)};
- return end;
+ basic_string_view<Char> format_str_;
+
+ template <typename FormatContext, typename Duration>
+ auto do_format(const std::tm& tm, FormatContext& ctx,
+ const Duration* subsecs) const -> decltype(ctx.out()) {
+ auto specs = specs_;
+ auto buf = basic_memory_buffer<Char>();
+ auto out = std::back_inserter(buf);
+ detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref_,
+ ctx);
+
+ auto loc_ref = ctx.locale();
+ detail::get_locale loc(static_cast<bool>(loc_ref), loc_ref);
+ auto w =
+ detail::tm_writer<decltype(out), Char, Duration>(loc, out, tm, subsecs);
+ detail::parse_chrono_format(format_str_.begin(), format_str_.end(), w);
+ return detail::write(
+ ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs);
}
public:
FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
-> decltype(ctx.begin()) {
- auto end = this->do_parse(ctx.begin(), ctx.end());
- // basic_string_view<>::compare isn't constexpr before C++17.
- if (specs.size() == 2 && specs[0] == Char('%')) {
- if (specs[1] == Char('F'))
- spec_ = spec::year_month_day;
- else if (specs[1] == Char('T'))
- spec_ = spec::hh_mm_ss;
- }
+ auto it = ctx.begin(), end = ctx.end();
+ if (it == end || *it == '}') return it;
+
+ it = detail::parse_align(it, end, specs_);
+ if (it == end) return it;
+
+ it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx);
+ if (it == end) return it;
+
+ end = detail::parse_chrono_format(it, end, detail::tm_format_checker());
+ // Replace the default format_str only if the new spec is not empty.
+ if (end != it) format_str_ = {it, detail::to_unsigned(end - it)};
return end;
}
template <typename FormatContext>
auto format(const std::tm& tm, FormatContext& ctx) const
-> decltype(ctx.out()) {
- const auto loc_ref = ctx.locale();
- detail::get_locale loc(static_cast<bool>(loc_ref), loc_ref);
- auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), tm);
- if (spec_ == spec::year_month_day)
- w.on_iso_date();
- else if (spec_ == spec::hh_mm_ss)
- w.on_iso_time();
- else
- detail::parse_chrono_format(specs.begin(), specs.end(), w);
- return w.out();
+ return do_format<FormatContext, std::chrono::seconds>(tm, ctx, nullptr);
}
};
-FMT_MODULE_EXPORT_END
+FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_CHRONO_H_
#include "format.h"
FMT_BEGIN_NAMESPACE
-FMT_MODULE_EXPORT_BEGIN
+FMT_BEGIN_EXPORT
enum class color : uint32_t {
alice_blue = 0xF0F8FF, // rgb(240,248,255)
uint8_t b;
};
-FMT_BEGIN_DETAIL_NAMESPACE
+namespace detail {
// color is a struct of either a rgb color or a terminal color.
struct color_type {
uint32_t rgb_color;
} value;
};
+} // namespace detail
-FMT_END_DETAIL_NAMESPACE
-
-/** A text style consisting of foreground and background colors and emphasis. */
+/// A text style consisting of foreground and background colors and emphasis.
class text_style {
public:
FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
: set_foreground_color(), set_background_color(), ems(em) {}
- FMT_CONSTEXPR text_style& operator|=(const text_style& rhs) {
+ FMT_CONSTEXPR auto operator|=(const text_style& rhs) -> text_style& {
if (!set_foreground_color) {
set_foreground_color = rhs.set_foreground_color;
foreground_color = rhs.foreground_color;
} else if (rhs.set_foreground_color) {
if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
- FMT_THROW(format_error("can't OR a terminal color"));
+ report_error("can't OR a terminal color");
foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
}
background_color = rhs.background_color;
} else if (rhs.set_background_color) {
if (!background_color.is_rgb || !rhs.background_color.is_rgb)
- FMT_THROW(format_error("can't OR a terminal color"));
+ report_error("can't OR a terminal color");
background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
}
return *this;
}
- friend FMT_CONSTEXPR text_style operator|(text_style lhs,
- const text_style& rhs) {
+ friend FMT_CONSTEXPR auto operator|(text_style lhs, const text_style& rhs)
+ -> text_style {
return lhs |= rhs;
}
- FMT_CONSTEXPR bool has_foreground() const noexcept {
+ FMT_CONSTEXPR auto has_foreground() const noexcept -> bool {
return set_foreground_color;
}
- FMT_CONSTEXPR bool has_background() const noexcept {
+ FMT_CONSTEXPR auto has_background() const noexcept -> bool {
return set_background_color;
}
- FMT_CONSTEXPR bool has_emphasis() const noexcept {
+ FMT_CONSTEXPR auto has_emphasis() const noexcept -> bool {
return static_cast<uint8_t>(ems) != 0;
}
- FMT_CONSTEXPR detail::color_type get_foreground() const noexcept {
+ FMT_CONSTEXPR auto get_foreground() const noexcept -> detail::color_type {
FMT_ASSERT(has_foreground(), "no foreground specified for this style");
return foreground_color;
}
- FMT_CONSTEXPR detail::color_type get_background() const noexcept {
+ FMT_CONSTEXPR auto get_background() const noexcept -> detail::color_type {
FMT_ASSERT(has_background(), "no background specified for this style");
return background_color;
}
- FMT_CONSTEXPR emphasis get_emphasis() const noexcept {
+ FMT_CONSTEXPR auto get_emphasis() const noexcept -> emphasis {
FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
return ems;
}
}
}
- friend FMT_CONSTEXPR text_style fg(detail::color_type foreground) noexcept;
+ friend FMT_CONSTEXPR auto fg(detail::color_type foreground) noexcept
+ -> text_style;
- friend FMT_CONSTEXPR text_style bg(detail::color_type background) noexcept;
+ friend FMT_CONSTEXPR auto bg(detail::color_type background) noexcept
+ -> text_style;
detail::color_type foreground_color;
detail::color_type background_color;
emphasis ems;
};
-/** Creates a text style from the foreground (text) color. */
-FMT_CONSTEXPR inline text_style fg(detail::color_type foreground) noexcept {
+/// Creates a text style from the foreground (text) color.
+FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept
+ -> text_style {
return text_style(true, foreground);
}
-/** Creates a text style from the background color. */
-FMT_CONSTEXPR inline text_style bg(detail::color_type background) noexcept {
+/// Creates a text style from the background color.
+FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept
+ -> text_style {
return text_style(false, background);
}
-FMT_CONSTEXPR inline text_style operator|(emphasis lhs, emphasis rhs) noexcept {
+FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept
+ -> text_style {
return text_style(lhs) | rhs;
}
-FMT_BEGIN_DETAIL_NAMESPACE
+namespace detail {
template <typename Char> struct ansi_color_escape {
FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color,
}
FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; }
- FMT_CONSTEXPR const Char* begin() const noexcept { return buffer; }
- FMT_CONSTEXPR_CHAR_TRAITS const Char* end() const noexcept {
- return buffer + std::char_traits<Char>::length(buffer);
+ FMT_CONSTEXPR auto begin() const noexcept -> const Char* { return buffer; }
+ FMT_CONSTEXPR20 auto end() const noexcept -> const Char* {
+ return buffer + basic_string_view<Char>(buffer).size();
}
private:
out[2] = static_cast<Char>('0' + c % 10);
out[3] = static_cast<Char>(delimiter);
}
- static FMT_CONSTEXPR bool has_emphasis(emphasis em, emphasis mask) noexcept {
+ static FMT_CONSTEXPR auto has_emphasis(emphasis em, emphasis mask) noexcept
+ -> bool {
return static_cast<uint8_t>(em) & static_cast<uint8_t>(mask);
}
};
template <typename Char>
-FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color(
- detail::color_type foreground) noexcept {
+FMT_CONSTEXPR auto make_foreground_color(detail::color_type foreground) noexcept
+ -> ansi_color_escape<Char> {
return ansi_color_escape<Char>(foreground, "\x1b[38;2;");
}
template <typename Char>
-FMT_CONSTEXPR ansi_color_escape<Char> make_background_color(
- detail::color_type background) noexcept {
+FMT_CONSTEXPR auto make_background_color(detail::color_type background) noexcept
+ -> ansi_color_escape<Char> {
return ansi_color_escape<Char>(background, "\x1b[48;2;");
}
template <typename Char>
-FMT_CONSTEXPR ansi_color_escape<Char> make_emphasis(emphasis em) noexcept {
+FMT_CONSTEXPR auto make_emphasis(emphasis em) noexcept
+ -> ansi_color_escape<Char> {
return ansi_color_escape<Char>(em);
}
-template <typename Char> inline void fputs(const Char* chars, FILE* stream) {
- int result = std::fputs(chars, stream);
- if (result < 0)
- FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
-}
-
-template <> inline void fputs<wchar_t>(const wchar_t* chars, FILE* stream) {
- int result = std::fputws(chars, stream);
- if (result < 0)
- FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
-}
-
-template <typename Char> inline void reset_color(FILE* stream) {
- fputs("\x1b[0m", stream);
-}
-
-template <> inline void reset_color<wchar_t>(FILE* stream) {
- fputs(L"\x1b[0m", stream);
-}
-
template <typename Char> inline void reset_color(buffer<Char>& buffer) {
auto reset_color = string_view("\x1b[0m");
buffer.append(reset_color.begin(), reset_color.end());
}
-template <typename T> struct styled_arg {
+template <typename T> struct styled_arg : detail::view {
const T& value;
text_style style;
+ styled_arg(const T& v, text_style s) : value(v), style(s) {}
};
template <typename Char>
-void vformat_to(buffer<Char>& buf, const text_style& ts,
- basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+void vformat_to(
+ buffer<Char>& buf, const text_style& ts, basic_string_view<Char> format_str,
+ basic_format_args<buffered_context<type_identity_t<Char>>> args) {
bool has_style = false;
if (ts.has_emphasis()) {
has_style = true;
if (has_style) detail::reset_color<Char>(buf);
}
-FMT_END_DETAIL_NAMESPACE
-
-template <typename S, typename Char = char_t<S>>
-void vprint(std::FILE* f, const text_style& ts, const S& format,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- basic_memory_buffer<Char> buf;
- detail::vformat_to(buf, ts, detail::to_string_view(format), args);
- if (detail::is_utf8()) {
- detail::print(f, basic_string_view<Char>(buf.begin(), buf.size()));
- } else {
- buf.push_back(Char(0));
- detail::fputs(buf.data(), f);
- }
+} // namespace detail
+
+inline void vprint(FILE* f, const text_style& ts, string_view fmt,
+ format_args args) {
+ auto buf = memory_buffer();
+ detail::vformat_to(buf, ts, fmt, args);
+ print(f, FMT_STRING("{}"), string_view(buf.begin(), buf.size()));
}
/**
- \rst
- Formats a string and prints it to the specified file stream using ANSI
- escape sequences to specify text formatting.
-
- **Example**::
-
- fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
- "Elapsed time: {0:.2f} seconds", 1.23);
- \endrst
+ * Formats a string and prints it to the specified file stream using ANSI
+ * escape sequences to specify text formatting.
+ *
+ * **Example**:
+ *
+ * fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
+ * "Elapsed time: {0:.2f} seconds", 1.23);
*/
-template <typename S, typename... Args,
- FMT_ENABLE_IF(detail::is_string<S>::value)>
-void print(std::FILE* f, const text_style& ts, const S& format_str,
- const Args&... args) {
- vprint(f, ts, format_str,
- fmt::make_format_args<buffer_context<char_t<S>>>(args...));
+template <typename... T>
+void print(FILE* f, const text_style& ts, format_string<T...> fmt,
+ T&&... args) {
+ vprint(f, ts, fmt, fmt::make_format_args(args...));
}
/**
- \rst
- Formats a string and prints it to stdout using ANSI escape sequences to
- specify text formatting.
-
- **Example**::
-
- fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
- "Elapsed time: {0:.2f} seconds", 1.23);
- \endrst
+ * Formats a string and prints it to stdout using ANSI escape sequences to
+ * specify text formatting.
+ *
+ * **Example**:
+ *
+ * fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
+ * "Elapsed time: {0:.2f} seconds", 1.23);
*/
-template <typename S, typename... Args,
- FMT_ENABLE_IF(detail::is_string<S>::value)>
-void print(const text_style& ts, const S& format_str, const Args&... args) {
- return print(stdout, ts, format_str, args...);
+template <typename... T>
+void print(const text_style& ts, format_string<T...> fmt, T&&... args) {
+ return print(stdout, ts, fmt, std::forward<T>(args)...);
}
-template <typename S, typename Char = char_t<S>>
-inline std::basic_string<Char> vformat(
- const text_style& ts, const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- basic_memory_buffer<Char> buf;
- detail::vformat_to(buf, ts, detail::to_string_view(format_str), args);
+inline auto vformat(const text_style& ts, string_view fmt, format_args args)
+ -> std::string {
+ auto buf = memory_buffer();
+ detail::vformat_to(buf, ts, fmt, args);
return fmt::to_string(buf);
}
/**
- \rst
- Formats arguments and returns the result as a string using ANSI
- escape sequences to specify text formatting.
-
- **Example**::
-
- #include <fmt/color.h>
- std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
- "The answer is {}", 42);
- \endrst
-*/
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline std::basic_string<Char> format(const text_style& ts, const S& format_str,
- const Args&... args) {
- return fmt::vformat(ts, detail::to_string_view(format_str),
- fmt::make_format_args<buffer_context<Char>>(args...));
+ * Formats arguments and returns the result as a string using ANSI escape
+ * sequences to specify text formatting.
+ *
+ * **Example**:
+ *
+ * ```
+ * #include <fmt/color.h>
+ * std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
+ * "The answer is {}", 42);
+ * ```
+ */
+template <typename... T>
+inline auto format(const text_style& ts, format_string<T...> fmt, T&&... args)
+ -> std::string {
+ return fmt::vformat(ts, fmt, fmt::make_format_args(args...));
}
-/**
- Formats a string with the given text_style and writes the output to ``out``.
- */
-template <typename OutputIt, typename Char,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)>
-OutputIt vformat_to(
- OutputIt out, const text_style& ts, basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
- auto&& buf = detail::get_buffer<Char>(out);
- detail::vformat_to(buf, ts, format_str, args);
- return detail::get_iterator(buf);
+/// Formats a string with the given text_style and writes the output to `out`.
+template <typename OutputIt,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+auto vformat_to(OutputIt out, const text_style& ts, string_view fmt,
+ format_args args) -> OutputIt {
+ auto&& buf = detail::get_buffer<char>(out);
+ detail::vformat_to(buf, ts, fmt, args);
+ return detail::get_iterator(buf, out);
}
/**
- \rst
- Formats arguments with the given text_style, writes the result to the output
- iterator ``out`` and returns the iterator past the end of the output range.
-
- **Example**::
-
- std::vector<char> out;
- fmt::format_to(std::back_inserter(out),
- fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
- \endrst
-*/
-template <typename OutputIt, typename S, typename... Args,
- bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value&&
- detail::is_string<S>::value>
-inline auto format_to(OutputIt out, const text_style& ts, const S& format_str,
- Args&&... args) ->
- typename std::enable_if<enable, OutputIt>::type {
- return vformat_to(out, ts, detail::to_string_view(format_str),
- fmt::make_format_args<buffer_context<char_t<S>>>(args...));
+ * Formats arguments with the given text style, writes the result to the output
+ * iterator `out` and returns the iterator past the end of the output range.
+ *
+ * **Example**:
+ *
+ * std::vector<char> out;
+ * fmt::format_to(std::back_inserter(out),
+ * fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
+ */
+template <typename OutputIt, typename... T,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
+inline auto format_to(OutputIt out, const text_style& ts,
+ format_string<T...> fmt, T&&... args) -> OutputIt {
+ return vformat_to(out, ts, fmt, fmt::make_format_args(args...));
}
template <typename T, typename Char>
};
/**
- \rst
- Returns an argument that will be formatted using ANSI escape sequences,
- to be used in a formatting function.
-
- **Example**::
-
- fmt::print("Elapsed time: {0:.2f} seconds",
- fmt::styled(1.23, fmt::fg(fmt::color::green) |
- fmt::bg(fmt::color::blue)));
- \endrst
+ * Returns an argument that will be formatted using ANSI escape sequences,
+ * to be used in a formatting function.
+ *
+ * **Example**:
+ *
+ * fmt::print("Elapsed time: {0:.2f} seconds",
+ * fmt::styled(1.23, fmt::fg(fmt::color::green) |
+ * fmt::bg(fmt::color::blue)));
*/
template <typename T>
FMT_CONSTEXPR auto styled(const T& value, text_style ts)
return detail::styled_arg<remove_cvref_t<T>>{value, ts};
}
-FMT_MODULE_EXPORT_END
+FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_COLOR_H_
#ifndef FMT_COMPILE_H_
#define FMT_COMPILE_H_
+#ifndef FMT_MODULE
+# include <iterator> // std::back_inserter
+#endif
+
#include "format.h"
FMT_BEGIN_NAMESPACE
+
+// A compile-time string which is compiled into fast formatting code.
+FMT_EXPORT class compiled_string {};
+
namespace detail {
-template <typename Char, typename InputIt>
-FMT_CONSTEXPR inline counting_iterator copy_str(InputIt begin, InputIt end,
- counting_iterator it) {
+template <typename T, typename InputIt>
+FMT_CONSTEXPR inline auto copy(InputIt begin, InputIt end, counting_iterator it)
+ -> counting_iterator {
return it + (end - begin);
}
-template <typename OutputIt> class truncating_iterator_base {
- protected:
- OutputIt out_;
- size_t limit_;
- size_t count_ = 0;
-
- truncating_iterator_base() : out_(), limit_(0) {}
-
- truncating_iterator_base(OutputIt out, size_t limit)
- : out_(out), limit_(limit) {}
-
- public:
- using iterator_category = std::output_iterator_tag;
- using value_type = typename std::iterator_traits<OutputIt>::value_type;
- using difference_type = std::ptrdiff_t;
- using pointer = void;
- using reference = void;
- FMT_UNCHECKED_ITERATOR(truncating_iterator_base);
-
- OutputIt base() const { return out_; }
- size_t count() const { return count_; }
-};
-
-// An output iterator that truncates the output and counts the number of objects
-// written to it.
-template <typename OutputIt,
- typename Enable = typename std::is_void<
- typename std::iterator_traits<OutputIt>::value_type>::type>
-class truncating_iterator;
-
-template <typename OutputIt>
-class truncating_iterator<OutputIt, std::false_type>
- : public truncating_iterator_base<OutputIt> {
- mutable typename truncating_iterator_base<OutputIt>::value_type blackhole_;
-
- public:
- using value_type = typename truncating_iterator_base<OutputIt>::value_type;
-
- truncating_iterator() = default;
-
- truncating_iterator(OutputIt out, size_t limit)
- : truncating_iterator_base<OutputIt>(out, limit) {}
-
- truncating_iterator& operator++() {
- if (this->count_++ < this->limit_) ++this->out_;
- return *this;
- }
-
- truncating_iterator operator++(int) {
- auto it = *this;
- ++*this;
- return it;
- }
-
- value_type& operator*() const {
- return this->count_ < this->limit_ ? *this->out_ : blackhole_;
- }
-};
-
-template <typename OutputIt>
-class truncating_iterator<OutputIt, std::true_type>
- : public truncating_iterator_base<OutputIt> {
- public:
- truncating_iterator() = default;
-
- truncating_iterator(OutputIt out, size_t limit)
- : truncating_iterator_base<OutputIt>(out, limit) {}
-
- template <typename T> truncating_iterator& operator=(T val) {
- if (this->count_++ < this->limit_) *this->out_++ = val;
- return *this;
- }
-
- truncating_iterator& operator++() { return *this; }
- truncating_iterator& operator++(int) { return *this; }
- truncating_iterator& operator*() { return *this; }
-};
-
-// A compile-time string which is compiled into fast formatting code.
-class compiled_string {};
-
template <typename S>
struct is_compiled_string : std::is_base_of<compiled_string, S> {};
/**
- \rst
- Converts a string literal *s* into a format string that will be parsed at
- compile time and converted into efficient formatting code. Requires C++17
- ``constexpr if`` compiler support.
-
- **Example**::
-
- // Converts 42 into std::string using the most efficient method and no
- // runtime format string processing.
- std::string s = fmt::format(FMT_COMPILE("{}"), 42);
- \endrst
+ * Converts a string literal `s` into a format string that will be parsed at
+ * compile time and converted into efficient formatting code. Requires C++17
+ * `constexpr if` compiler support.
+ *
+ * **Example**:
+ *
+ * // Converts 42 into std::string using the most efficient method and no
+ * // runtime format string processing.
+ * std::string s = fmt::format(FMT_COMPILE("{}"), 42);
*/
#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
-# define FMT_COMPILE(s) \
- FMT_STRING_IMPL(s, fmt::detail::compiled_string, explicit)
+# define FMT_COMPILE(s) FMT_STRING_IMPL(s, fmt::compiled_string, explicit)
#else
# define FMT_COMPILE(s) FMT_STRING(s)
#endif
#endif
template <typename T, typename... Tail>
-const T& first(const T& value, const Tail&...) {
+auto first(const T& value, const Tail&...) -> const T& {
return value;
}
template <typename OutputIt, typename... Args>
constexpr OutputIt format(OutputIt out, const Args&...) const {
- return write<Char>(out, value);
+ *out++ = value;
+ return out;
}
};
template <typename OutputIt, typename... Args>
constexpr OutputIt format(OutputIt out, const Args&... args) const {
- return write<Char>(out, get_arg_checked<T, N>(args...));
+ const T& arg = get_arg_checked<T, N>(args...);
+ if constexpr (std::is_convertible<T, basic_string_view<Char>>::value) {
+ auto s = basic_string_view<Char>(arg);
+ return copy<Char>(s.begin(), s.end(), out);
+ }
+ return write<Char>(out, arg);
}
};
}
template <typename Args, size_t POS, int ID, typename S>
-constexpr auto compile_format_string(S format_str);
+constexpr auto compile_format_string(S fmt);
template <typename Args, size_t POS, int ID, typename T, typename S>
-constexpr auto parse_tail(T head, S format_str) {
- if constexpr (POS !=
- basic_string_view<typename S::char_type>(format_str).size()) {
- constexpr auto tail = compile_format_string<Args, POS, ID>(format_str);
+constexpr auto parse_tail(T head, S fmt) {
+ if constexpr (POS != basic_string_view<typename S::char_type>(fmt).size()) {
+ constexpr auto tail = compile_format_string<Args, POS, ID>(fmt);
if constexpr (std::is_same<remove_cvref_t<decltype(tail)>,
unknown_format>())
return tail;
int next_arg_id;
};
-constexpr int manual_indexing_id = -1;
+enum { manual_indexing_id = -1 };
template <typename T, typename Char>
constexpr parse_specs_result<T, Char> parse_specs(basic_string_view<Char> str,
size_t pos, int next_arg_id) {
str.remove_prefix(pos);
- auto ctx = compile_parse_context<Char>(str, max_value<int>(), nullptr, {},
- next_arg_id);
+ auto ctx =
+ compile_parse_context<Char>(str, max_value<int>(), nullptr, next_arg_id);
auto f = formatter<T, Char>();
auto end = f.parse(ctx);
return {f, pos + fmt::detail::to_unsigned(end - str.data()),
template <typename Char> struct arg_id_handler {
arg_ref<Char> arg_id;
- constexpr int operator()() {
+ constexpr int on_auto() {
FMT_ASSERT(false, "handler cannot be used with automatic indexing");
return 0;
}
- constexpr int operator()(int id) {
+ constexpr int on_index(int id) {
arg_id = arg_ref<Char>(id);
return 0;
}
- constexpr int operator()(basic_string_view<Char> id) {
+ constexpr int on_name(basic_string_view<Char> id) {
arg_id = arg_ref<Char>(id);
return 0;
}
-
- constexpr void on_error(const char* message) {
- FMT_THROW(format_error(message));
- }
};
template <typename Char> struct parse_arg_id_result {
template <typename T, typename Args, size_t END_POS, int ARG_INDEX, int NEXT_ID,
typename S>
-constexpr auto parse_replacement_field_then_tail(S format_str) {
+constexpr auto parse_replacement_field_then_tail(S fmt) {
using char_type = typename S::char_type;
- constexpr auto str = basic_string_view<char_type>(format_str);
+ constexpr auto str = basic_string_view<char_type>(fmt);
constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type();
if constexpr (c == '}') {
return parse_tail<Args, END_POS + 1, NEXT_ID>(
- field<char_type, typename field_type<T>::type, ARG_INDEX>(),
- format_str);
+ field<char_type, typename field_type<T>::type, ARG_INDEX>(), fmt);
} else if constexpr (c != ':') {
FMT_THROW(format_error("expected ':'"));
} else {
return parse_tail<Args, result.end + 1, result.next_arg_id>(
spec_field<char_type, typename field_type<T>::type, ARG_INDEX>{
result.fmt},
- format_str);
+ fmt);
}
}
}
// Compiles a non-empty format string and returns the compiled representation
// or unknown_format() on unrecognized input.
template <typename Args, size_t POS, int ID, typename S>
-constexpr auto compile_format_string(S format_str) {
+constexpr auto compile_format_string(S fmt) {
using char_type = typename S::char_type;
- constexpr auto str = basic_string_view<char_type>(format_str);
+ constexpr auto str = basic_string_view<char_type>(fmt);
if constexpr (str[POS] == '{') {
if constexpr (POS + 1 == str.size())
FMT_THROW(format_error("unmatched '{' in format string"));
if constexpr (str[POS + 1] == '{') {
- return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
+ return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), fmt);
} else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') {
static_assert(ID != manual_indexing_id,
"cannot switch from manual to automatic argument indexing");
constexpr auto next_id =
ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
return parse_replacement_field_then_tail<get_type<ID, Args>, Args,
- POS + 1, ID, next_id>(
- format_str);
+ POS + 1, ID, next_id>(fmt);
} else {
constexpr auto arg_id_result =
parse_arg_id<ID>(str.data() + POS + 1, str.data() + str.size());
return parse_replacement_field_then_tail<get_type<arg_index, Args>,
Args, arg_id_end_pos,
arg_index, manual_indexing_id>(
- format_str);
+ fmt);
} else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) {
constexpr auto arg_index =
get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{});
- if constexpr (arg_index != invalid_arg_index) {
+ if constexpr (arg_index >= 0) {
constexpr auto next_id =
ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
return parse_replacement_field_then_tail<
decltype(get_type<arg_index, Args>::value), Args, arg_id_end_pos,
- arg_index, next_id>(format_str);
- } else {
- if constexpr (c == '}') {
- return parse_tail<Args, arg_id_end_pos + 1, ID>(
- runtime_named_field<char_type>{arg_id_result.arg_id.val.name},
- format_str);
- } else if constexpr (c == ':') {
- return unknown_format(); // no type info for specs parsing
- }
+ arg_index, next_id>(fmt);
+ } else if constexpr (c == '}') {
+ return parse_tail<Args, arg_id_end_pos + 1, ID>(
+ runtime_named_field<char_type>{arg_id_result.arg_id.val.name},
+ fmt);
+ } else if constexpr (c == ':') {
+ return unknown_format(); // no type info for specs parsing
}
}
}
} else if constexpr (str[POS] == '}') {
if constexpr (POS + 1 == str.size())
FMT_THROW(format_error("unmatched '}' in format string"));
- return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
+ return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), fmt);
} else {
constexpr auto end = parse_text(str, POS + 1);
if constexpr (end - POS > 1) {
- return parse_tail<Args, end, ID>(make_text(str, POS, end - POS),
- format_str);
+ return parse_tail<Args, end, ID>(make_text(str, POS, end - POS), fmt);
} else {
- return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]},
- format_str);
+ return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]}, fmt);
}
}
}
template <typename... Args, typename S,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-constexpr auto compile(S format_str) {
- constexpr auto str = basic_string_view<typename S::char_type>(format_str);
+constexpr auto compile(S fmt) {
+ constexpr auto str = basic_string_view<typename S::char_type>(fmt);
if constexpr (str.size() == 0) {
return detail::make_text(str, 0, 0);
} else {
constexpr auto result =
- detail::compile_format_string<detail::type_list<Args...>, 0, 0>(
- format_str);
+ detail::compile_format_string<detail::type_list<Args...>, 0, 0>(fmt);
return result;
}
}
#endif // defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
} // namespace detail
-FMT_MODULE_EXPORT_BEGIN
+FMT_BEGIN_EXPORT
#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
template <typename OutputIt, typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n,
- const S& format_str, Args&&... args) {
- auto it = fmt::format_to(detail::truncating_iterator<OutputIt>(out, n),
- format_str, std::forward<Args>(args)...);
- return {it.base(), it.count()};
+auto format_to_n(OutputIt out, size_t n, const S& fmt, Args&&... args)
+ -> format_to_n_result<OutputIt> {
+ using traits = detail::fixed_buffer_traits;
+ auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
+ fmt::format_to(std::back_inserter(buf), fmt, std::forward<Args>(args)...);
+ return {buf.out(), buf.count()};
}
template <typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-FMT_CONSTEXPR20 size_t formatted_size(const S& format_str,
- const Args&... args) {
- return fmt::format_to(detail::counting_iterator(), format_str, args...)
- .count();
+FMT_CONSTEXPR20 auto formatted_size(const S& fmt, const Args&... args)
+ -> size_t {
+ return fmt::format_to(detail::counting_iterator(), fmt, args...).count();
}
template <typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-void print(std::FILE* f, const S& format_str, const Args&... args) {
+void print(std::FILE* f, const S& fmt, const Args&... args) {
memory_buffer buffer;
- fmt::format_to(std::back_inserter(buffer), format_str, args...);
+ fmt::format_to(std::back_inserter(buffer), fmt, args...);
detail::print(f, {buffer.data(), buffer.size()});
}
template <typename S, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-void print(const S& format_str, const Args&... args) {
- print(stdout, format_str, args...);
+void print(const S& fmt, const Args&... args) {
+ print(stdout, fmt, args...);
}
#if FMT_USE_NONTYPE_TEMPLATE_ARGS
} // namespace literals
#endif
-FMT_MODULE_EXPORT_END
+FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_COMPILE_H_
-// Formatting library for C++ - the core API for char/UTF-8
-//
-// Copyright (c) 2012 - present, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
+// This file is only provided for compatibility and may be removed in future
+// versions. Use fmt/base.h if you don't need fmt::format and fmt/format.h
+// otherwise.
-#ifndef FMT_CORE_H_
-#define FMT_CORE_H_
-
-#include <cstddef> // std::byte
-#include <cstdio> // std::FILE
-#include <cstring> // std::strlen
-#include <iterator>
-#include <limits>
-#include <string>
-#include <type_traits>
-
-// The fmt library version in the form major * 10000 + minor * 100 + patch.
-#define FMT_VERSION 90100
-
-#if defined(__clang__) && !defined(__ibmxl__)
-# define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__)
-#else
-# define FMT_CLANG_VERSION 0
-#endif
-
-#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && \
- !defined(__NVCOMPILER)
-# define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
-#else
-# define FMT_GCC_VERSION 0
-#endif
-
-#ifndef FMT_GCC_PRAGMA
-// Workaround _Pragma bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59884.
-# if FMT_GCC_VERSION >= 504
-# define FMT_GCC_PRAGMA(arg) _Pragma(arg)
-# else
-# define FMT_GCC_PRAGMA(arg)
-# endif
-#endif
-
-#ifdef __ICL
-# define FMT_ICC_VERSION __ICL
-#elif defined(__INTEL_COMPILER)
-# define FMT_ICC_VERSION __INTEL_COMPILER
-#else
-# define FMT_ICC_VERSION 0
-#endif
-
-#ifdef _MSC_VER
-# define FMT_MSC_VERSION _MSC_VER
-# define FMT_MSC_WARNING(...) __pragma(warning(__VA_ARGS__))
-#else
-# define FMT_MSC_VERSION 0
-# define FMT_MSC_WARNING(...)
-#endif
-
-#ifdef _MSVC_LANG
-# define FMT_CPLUSPLUS _MSVC_LANG
-#else
-# define FMT_CPLUSPLUS __cplusplus
-#endif
-
-#ifdef __has_feature
-# define FMT_HAS_FEATURE(x) __has_feature(x)
-#else
-# define FMT_HAS_FEATURE(x) 0
-#endif
-
-#if (defined(__has_include) || FMT_ICC_VERSION >= 1600 || \
- FMT_MSC_VERSION > 1900) && \
- !defined(__INTELLISENSE__)
-# define FMT_HAS_INCLUDE(x) __has_include(x)
-#else
-# define FMT_HAS_INCLUDE(x) 0
-#endif
-
-#ifdef __has_cpp_attribute
-# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
-#else
-# define FMT_HAS_CPP_ATTRIBUTE(x) 0
-#endif
-
-#define FMT_HAS_CPP14_ATTRIBUTE(attribute) \
- (FMT_CPLUSPLUS >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute))
-
-#define FMT_HAS_CPP17_ATTRIBUTE(attribute) \
- (FMT_CPLUSPLUS >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute))
-
-// Check if relaxed C++14 constexpr is supported.
-// GCC doesn't allow throw in constexpr until version 6 (bug 67371).
-#ifndef FMT_USE_CONSTEXPR
-# if (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VERSION >= 1912 || \
- (FMT_GCC_VERSION >= 600 && FMT_CPLUSPLUS >= 201402L)) && \
- !FMT_ICC_VERSION && !defined(__NVCC__)
-# define FMT_USE_CONSTEXPR 1
-# else
-# define FMT_USE_CONSTEXPR 0
-# endif
-#endif
-#if FMT_USE_CONSTEXPR
-# define FMT_CONSTEXPR constexpr
-#else
-# define FMT_CONSTEXPR
-#endif
-
-#if ((FMT_CPLUSPLUS >= 202002L) && \
- (!defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE > 9)) || \
- (FMT_CPLUSPLUS >= 201709L && FMT_GCC_VERSION >= 1002)
-# define FMT_CONSTEXPR20 constexpr
-#else
-# define FMT_CONSTEXPR20
-#endif
-
-// Check if constexpr std::char_traits<>::{compare,length} are supported.
-#if defined(__GLIBCXX__)
-# if FMT_CPLUSPLUS >= 201703L && defined(_GLIBCXX_RELEASE) && \
- _GLIBCXX_RELEASE >= 7 // GCC 7+ libstdc++ has _GLIBCXX_RELEASE.
-# define FMT_CONSTEXPR_CHAR_TRAITS constexpr
-# endif
-#elif defined(_LIBCPP_VERSION) && FMT_CPLUSPLUS >= 201703L && \
- _LIBCPP_VERSION >= 4000
-# define FMT_CONSTEXPR_CHAR_TRAITS constexpr
-#elif FMT_MSC_VERSION >= 1914 && FMT_CPLUSPLUS >= 201703L
-# define FMT_CONSTEXPR_CHAR_TRAITS constexpr
-#endif
-#ifndef FMT_CONSTEXPR_CHAR_TRAITS
-# define FMT_CONSTEXPR_CHAR_TRAITS
-#endif
-
-// Check if exceptions are disabled.
-#ifndef FMT_EXCEPTIONS
-# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \
- (FMT_MSC_VERSION && !_HAS_EXCEPTIONS)
-# define FMT_EXCEPTIONS 0
-# else
-# define FMT_EXCEPTIONS 1
-# endif
-#endif
-
-#ifndef FMT_DEPRECATED
-# if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VERSION >= 1900
-# define FMT_DEPRECATED [[deprecated]]
-# else
-# if (defined(__GNUC__) && !defined(__LCC__)) || defined(__clang__)
-# define FMT_DEPRECATED __attribute__((deprecated))
-# elif FMT_MSC_VERSION
-# define FMT_DEPRECATED __declspec(deprecated)
-# else
-# define FMT_DEPRECATED /* deprecated */
-# endif
-# endif
-#endif
-
-// [[noreturn]] is disabled on MSVC and NVCC because of bogus unreachable code
-// warnings.
-#if FMT_EXCEPTIONS && FMT_HAS_CPP_ATTRIBUTE(noreturn) && !FMT_MSC_VERSION && \
- !defined(__NVCC__)
-# define FMT_NORETURN [[noreturn]]
-#else
-# define FMT_NORETURN
-#endif
-
-#if FMT_HAS_CPP17_ATTRIBUTE(fallthrough)
-# define FMT_FALLTHROUGH [[fallthrough]]
-#elif defined(__clang__)
-# define FMT_FALLTHROUGH [[clang::fallthrough]]
-#elif FMT_GCC_VERSION >= 700 && \
- (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520)
-# define FMT_FALLTHROUGH [[gnu::fallthrough]]
-#else
-# define FMT_FALLTHROUGH
-#endif
-
-#ifndef FMT_NODISCARD
-# if FMT_HAS_CPP17_ATTRIBUTE(nodiscard)
-# define FMT_NODISCARD [[nodiscard]]
-# else
-# define FMT_NODISCARD
-# endif
-#endif
-
-#ifndef FMT_USE_FLOAT
-# define FMT_USE_FLOAT 1
-#endif
-#ifndef FMT_USE_DOUBLE
-# define FMT_USE_DOUBLE 1
-#endif
-#ifndef FMT_USE_LONG_DOUBLE
-# define FMT_USE_LONG_DOUBLE 1
-#endif
-
-#ifndef FMT_INLINE
-# if FMT_GCC_VERSION || FMT_CLANG_VERSION
-# define FMT_INLINE inline __attribute__((always_inline))
-# else
-# define FMT_INLINE inline
-# endif
-#endif
-
-// An inline std::forward replacement.
-#define FMT_FORWARD(...) static_cast<decltype(__VA_ARGS__)&&>(__VA_ARGS__)
-
-#ifdef _MSC_VER
-# define FMT_UNCHECKED_ITERATOR(It) \
- using _Unchecked_type = It // Mark iterator as checked.
-#else
-# define FMT_UNCHECKED_ITERATOR(It) using unchecked_type = It
-#endif
-
-#ifndef FMT_BEGIN_NAMESPACE
-# define FMT_BEGIN_NAMESPACE \
- namespace fmt { \
- inline namespace v9 {
-# define FMT_END_NAMESPACE \
- } \
- }
-#endif
-
-#ifndef FMT_MODULE_EXPORT
-# define FMT_MODULE_EXPORT
-# define FMT_MODULE_EXPORT_BEGIN
-# define FMT_MODULE_EXPORT_END
-# define FMT_BEGIN_DETAIL_NAMESPACE namespace detail {
-# define FMT_END_DETAIL_NAMESPACE }
-#endif
-
-#if !defined(FMT_HEADER_ONLY) && defined(_WIN32)
-# define FMT_CLASS_API FMT_MSC_WARNING(suppress : 4275)
-# ifdef FMT_EXPORT
-# define FMT_API __declspec(dllexport)
-# elif defined(FMT_SHARED)
-# define FMT_API __declspec(dllimport)
-# endif
-#else
-# define FMT_CLASS_API
-# if defined(FMT_EXPORT) || defined(FMT_SHARED)
-# if defined(__GNUC__) || defined(__clang__)
-# define FMT_API __attribute__((visibility("default")))
-# endif
-# endif
-#endif
-#ifndef FMT_API
-# define FMT_API
-#endif
-
-// libc++ supports string_view in pre-c++17.
-#if FMT_HAS_INCLUDE(<string_view>) && \
- (FMT_CPLUSPLUS >= 201703L || defined(_LIBCPP_VERSION))
-# include <string_view>
-# define FMT_USE_STRING_VIEW
-#elif FMT_HAS_INCLUDE("experimental/string_view") && FMT_CPLUSPLUS >= 201402L
-# include <experimental/string_view>
-# define FMT_USE_EXPERIMENTAL_STRING_VIEW
-#endif
-
-#ifndef FMT_UNICODE
-# define FMT_UNICODE !FMT_MSC_VERSION
-#endif
-
-#ifndef FMT_CONSTEVAL
-# if ((FMT_GCC_VERSION >= 1000 || FMT_CLANG_VERSION >= 1101) && \
- FMT_CPLUSPLUS >= 202002L && !defined(__apple_build_version__)) || \
- (defined(__cpp_consteval) && \
- (!FMT_MSC_VERSION || _MSC_FULL_VER >= 193030704))
-// consteval is broken in MSVC before VS2022 and Apple clang 13.
-# define FMT_CONSTEVAL consteval
-# define FMT_HAS_CONSTEVAL
-# else
-# define FMT_CONSTEVAL
-# endif
-#endif
-
-#ifndef FMT_USE_NONTYPE_TEMPLATE_ARGS
-# if defined(__cpp_nontype_template_args) && \
- ((FMT_GCC_VERSION >= 903 && FMT_CPLUSPLUS >= 201709L) || \
- __cpp_nontype_template_args >= 201911L) && \
- !defined(__NVCOMPILER)
-# define FMT_USE_NONTYPE_TEMPLATE_ARGS 1
-# else
-# define FMT_USE_NONTYPE_TEMPLATE_ARGS 0
-# endif
-#endif
-
-// Enable minimal optimizations for more compact code in debug mode.
-FMT_GCC_PRAGMA("GCC push_options")
-#if !defined(__OPTIMIZE__) && !defined(__NVCOMPILER)
-FMT_GCC_PRAGMA("GCC optimize(\"Og\")")
-#endif
-
-FMT_BEGIN_NAMESPACE
-FMT_MODULE_EXPORT_BEGIN
-
-// Implementations of enable_if_t and other metafunctions for older systems.
-template <bool B, typename T = void>
-using enable_if_t = typename std::enable_if<B, T>::type;
-template <bool B, typename T, typename F>
-using conditional_t = typename std::conditional<B, T, F>::type;
-template <bool B> using bool_constant = std::integral_constant<bool, B>;
-template <typename T>
-using remove_reference_t = typename std::remove_reference<T>::type;
-template <typename T>
-using remove_const_t = typename std::remove_const<T>::type;
-template <typename T>
-using remove_cvref_t = typename std::remove_cv<remove_reference_t<T>>::type;
-template <typename T> struct type_identity { using type = T; };
-template <typename T> using type_identity_t = typename type_identity<T>::type;
-template <typename T>
-using underlying_t = typename std::underlying_type<T>::type;
-
-template <typename...> struct disjunction : std::false_type {};
-template <typename P> struct disjunction<P> : P {};
-template <typename P1, typename... Pn>
-struct disjunction<P1, Pn...>
- : conditional_t<bool(P1::value), P1, disjunction<Pn...>> {};
-
-template <typename...> struct conjunction : std::true_type {};
-template <typename P> struct conjunction<P> : P {};
-template <typename P1, typename... Pn>
-struct conjunction<P1, Pn...>
- : conditional_t<bool(P1::value), conjunction<Pn...>, P1> {};
-
-struct monostate {
- constexpr monostate() {}
-};
-
-// An enable_if helper to be used in template parameters which results in much
-// shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed
-// to workaround a bug in MSVC 2019 (see #1140 and #1186).
-#ifdef FMT_DOC
-# define FMT_ENABLE_IF(...)
-#else
-# define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0
-#endif
-
-FMT_BEGIN_DETAIL_NAMESPACE
-
-// Suppresses "unused variable" warnings with the method described in
-// https://herbsutter.com/2009/10/18/mailbag-shutting-up-compiler-warnings/.
-// (void)var does not work on many Intel compilers.
-template <typename... T> FMT_CONSTEXPR void ignore_unused(const T&...) {}
-
-constexpr FMT_INLINE auto is_constant_evaluated(
- bool default_value = false) noexcept -> bool {
-#ifdef __cpp_lib_is_constant_evaluated
- ignore_unused(default_value);
- return std::is_constant_evaluated();
-#else
- return default_value;
-#endif
-}
-
-// Suppresses "conditional expression is constant" warnings.
-template <typename T> constexpr FMT_INLINE auto const_check(T value) -> T {
- return value;
-}
-
-FMT_NORETURN FMT_API void assert_fail(const char* file, int line,
- const char* message);
-
-#ifndef FMT_ASSERT
-# ifdef NDEBUG
-// FMT_ASSERT is not empty to avoid -Wempty-body.
-# define FMT_ASSERT(condition, message) \
- ::fmt::detail::ignore_unused((condition), (message))
-# else
-# define FMT_ASSERT(condition, message) \
- ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \
- ? (void)0 \
- : ::fmt::detail::assert_fail(__FILE__, __LINE__, (message)))
-# endif
-#endif
-
-#if defined(FMT_USE_STRING_VIEW)
-template <typename Char> using std_string_view = std::basic_string_view<Char>;
-#elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW)
-template <typename Char>
-using std_string_view = std::experimental::basic_string_view<Char>;
-#else
-template <typename T> struct std_string_view {};
-#endif
-
-#ifdef FMT_USE_INT128
-// Do nothing.
-#elif defined(__SIZEOF_INT128__) && !defined(__NVCC__) && \
- !(FMT_CLANG_VERSION && FMT_MSC_VERSION)
-# define FMT_USE_INT128 1
-using int128_opt = __int128_t; // An optional native 128-bit integer.
-using uint128_opt = __uint128_t;
-template <typename T> inline auto convert_for_visit(T value) -> T {
- return value;
-}
-#else
-# define FMT_USE_INT128 0
-#endif
-#if !FMT_USE_INT128
-enum class int128_opt {};
-enum class uint128_opt {};
-// Reduce template instantiations.
-template <typename T> auto convert_for_visit(T) -> monostate { return {}; }
-#endif
-
-// Casts a nonnegative integer to unsigned.
-template <typename Int>
-FMT_CONSTEXPR auto to_unsigned(Int value) ->
- typename std::make_unsigned<Int>::type {
- FMT_ASSERT(std::is_unsigned<Int>::value || value >= 0, "negative value");
- return static_cast<typename std::make_unsigned<Int>::type>(value);
-}
-
-FMT_MSC_WARNING(suppress : 4566) constexpr unsigned char micro[] = "\u00B5";
-
-constexpr auto is_utf8() -> bool {
- // Avoid buggy sign extensions in MSVC's constant evaluation mode (#2297).
- using uchar = unsigned char;
- return FMT_UNICODE || (sizeof(micro) == 3 && uchar(micro[0]) == 0xC2 &&
- uchar(micro[1]) == 0xB5);
-}
-FMT_END_DETAIL_NAMESPACE
-
-/**
- An implementation of ``std::basic_string_view`` for pre-C++17. It provides a
- subset of the API. ``fmt::basic_string_view`` is used for format strings even
- if ``std::string_view`` is available to prevent issues when a library is
- compiled with a different ``-std`` option than the client code (which is not
- recommended).
- */
-template <typename Char> class basic_string_view {
- private:
- const Char* data_;
- size_t size_;
-
- public:
- using value_type = Char;
- using iterator = const Char*;
-
- constexpr basic_string_view() noexcept : data_(nullptr), size_(0) {}
-
- /** Constructs a string reference object from a C string and a size. */
- constexpr basic_string_view(const Char* s, size_t count) noexcept
- : data_(s), size_(count) {}
-
- /**
- \rst
- Constructs a string reference object from a C string computing
- the size with ``std::char_traits<Char>::length``.
- \endrst
- */
- FMT_CONSTEXPR_CHAR_TRAITS
- FMT_INLINE
- basic_string_view(const Char* s)
- : data_(s),
- size_(detail::const_check(std::is_same<Char, char>::value &&
- !detail::is_constant_evaluated(true))
- ? std::strlen(reinterpret_cast<const char*>(s))
- : std::char_traits<Char>::length(s)) {}
-
- /** Constructs a string reference from a ``std::basic_string`` object. */
- template <typename Traits, typename Alloc>
- FMT_CONSTEXPR basic_string_view(
- const std::basic_string<Char, Traits, Alloc>& s) noexcept
- : data_(s.data()), size_(s.size()) {}
-
- template <typename S, FMT_ENABLE_IF(std::is_same<
- S, detail::std_string_view<Char>>::value)>
- FMT_CONSTEXPR basic_string_view(S s) noexcept
- : data_(s.data()), size_(s.size()) {}
-
- /** Returns a pointer to the string data. */
- constexpr auto data() const noexcept -> const Char* { return data_; }
-
- /** Returns the string size. */
- constexpr auto size() const noexcept -> size_t { return size_; }
-
- constexpr auto begin() const noexcept -> iterator { return data_; }
- constexpr auto end() const noexcept -> iterator { return data_ + size_; }
-
- constexpr auto operator[](size_t pos) const noexcept -> const Char& {
- return data_[pos];
- }
-
- FMT_CONSTEXPR void remove_prefix(size_t n) noexcept {
- data_ += n;
- size_ -= n;
- }
-
- // Lexicographically compare this string reference to other.
- FMT_CONSTEXPR_CHAR_TRAITS auto compare(basic_string_view other) const -> int {
- size_t str_size = size_ < other.size_ ? size_ : other.size_;
- int result = std::char_traits<Char>::compare(data_, other.data_, str_size);
- if (result == 0)
- result = size_ == other.size_ ? 0 : (size_ < other.size_ ? -1 : 1);
- return result;
- }
-
- FMT_CONSTEXPR_CHAR_TRAITS friend auto operator==(basic_string_view lhs,
- basic_string_view rhs)
- -> bool {
- return lhs.compare(rhs) == 0;
- }
- friend auto operator!=(basic_string_view lhs, basic_string_view rhs) -> bool {
- return lhs.compare(rhs) != 0;
- }
- friend auto operator<(basic_string_view lhs, basic_string_view rhs) -> bool {
- return lhs.compare(rhs) < 0;
- }
- friend auto operator<=(basic_string_view lhs, basic_string_view rhs) -> bool {
- return lhs.compare(rhs) <= 0;
- }
- friend auto operator>(basic_string_view lhs, basic_string_view rhs) -> bool {
- return lhs.compare(rhs) > 0;
- }
- friend auto operator>=(basic_string_view lhs, basic_string_view rhs) -> bool {
- return lhs.compare(rhs) >= 0;
- }
-};
-
-using string_view = basic_string_view<char>;
-
-/** Specifies if ``T`` is a character type. Can be specialized by users. */
-template <typename T> struct is_char : std::false_type {};
-template <> struct is_char<char> : std::true_type {};
-
-FMT_BEGIN_DETAIL_NAMESPACE
-
-// A base class for compile-time strings.
-struct compile_string {};
-
-template <typename S>
-struct is_compile_string : std::is_base_of<compile_string, S> {};
-
-// Returns a string view of `s`.
-template <typename Char, FMT_ENABLE_IF(is_char<Char>::value)>
-FMT_INLINE auto to_string_view(const Char* s) -> basic_string_view<Char> {
- return s;
-}
-template <typename Char, typename Traits, typename Alloc>
-inline auto to_string_view(const std::basic_string<Char, Traits, Alloc>& s)
- -> basic_string_view<Char> {
- return s;
-}
-template <typename Char>
-constexpr auto to_string_view(basic_string_view<Char> s)
- -> basic_string_view<Char> {
- return s;
-}
-template <typename Char,
- FMT_ENABLE_IF(!std::is_empty<std_string_view<Char>>::value)>
-inline auto to_string_view(std_string_view<Char> s) -> basic_string_view<Char> {
- return s;
-}
-template <typename S, FMT_ENABLE_IF(is_compile_string<S>::value)>
-constexpr auto to_string_view(const S& s)
- -> basic_string_view<typename S::char_type> {
- return basic_string_view<typename S::char_type>(s);
-}
-void to_string_view(...);
-
-// Specifies whether S is a string type convertible to fmt::basic_string_view.
-// It should be a constexpr function but MSVC 2017 fails to compile it in
-// enable_if and MSVC 2015 fails to compile it as an alias template.
-// ADL invocation of to_string_view is DEPRECATED!
-template <typename S>
-struct is_string : std::is_class<decltype(to_string_view(std::declval<S>()))> {
-};
-
-template <typename S, typename = void> struct char_t_impl {};
-template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> {
- using result = decltype(to_string_view(std::declval<S>()));
- using type = typename result::value_type;
-};
-
-enum class type {
- none_type,
- // Integer types should go first,
- int_type,
- uint_type,
- long_long_type,
- ulong_long_type,
- int128_type,
- uint128_type,
- bool_type,
- char_type,
- last_integer_type = char_type,
- // followed by floating-point types.
- float_type,
- double_type,
- long_double_type,
- last_numeric_type = long_double_type,
- cstring_type,
- string_type,
- pointer_type,
- custom_type
-};
-
-// Maps core type T to the corresponding type constant.
-template <typename T, typename Char>
-struct type_constant : std::integral_constant<type, type::custom_type> {};
-
-#define FMT_TYPE_CONSTANT(Type, constant) \
- template <typename Char> \
- struct type_constant<Type, Char> \
- : std::integral_constant<type, type::constant> {}
-
-FMT_TYPE_CONSTANT(int, int_type);
-FMT_TYPE_CONSTANT(unsigned, uint_type);
-FMT_TYPE_CONSTANT(long long, long_long_type);
-FMT_TYPE_CONSTANT(unsigned long long, ulong_long_type);
-FMT_TYPE_CONSTANT(int128_opt, int128_type);
-FMT_TYPE_CONSTANT(uint128_opt, uint128_type);
-FMT_TYPE_CONSTANT(bool, bool_type);
-FMT_TYPE_CONSTANT(Char, char_type);
-FMT_TYPE_CONSTANT(float, float_type);
-FMT_TYPE_CONSTANT(double, double_type);
-FMT_TYPE_CONSTANT(long double, long_double_type);
-FMT_TYPE_CONSTANT(const Char*, cstring_type);
-FMT_TYPE_CONSTANT(basic_string_view<Char>, string_type);
-FMT_TYPE_CONSTANT(const void*, pointer_type);
-
-constexpr bool is_integral_type(type t) {
- return t > type::none_type && t <= type::last_integer_type;
-}
-
-constexpr bool is_arithmetic_type(type t) {
- return t > type::none_type && t <= type::last_numeric_type;
-}
-
-FMT_NORETURN FMT_API void throw_format_error(const char* message);
-
-struct error_handler {
- constexpr error_handler() = default;
- constexpr error_handler(const error_handler&) = default;
-
- // This function is intentionally not constexpr to give a compile-time error.
- FMT_NORETURN void on_error(const char* message) {
- throw_format_error(message);
- }
-};
-FMT_END_DETAIL_NAMESPACE
-
-/** String's character type. */
-template <typename S> using char_t = typename detail::char_t_impl<S>::type;
-
-/**
- \rst
- Parsing context consisting of a format string range being parsed and an
- argument counter for automatic indexing.
- You can use the ``format_parse_context`` type alias for ``char`` instead.
- \endrst
- */
-template <typename Char, typename ErrorHandler = detail::error_handler>
-class basic_format_parse_context : private ErrorHandler {
- private:
- basic_string_view<Char> format_str_;
- int next_arg_id_;
-
- FMT_CONSTEXPR void do_check_arg_id(int id);
-
- public:
- using char_type = Char;
- using iterator = typename basic_string_view<Char>::iterator;
-
- explicit constexpr basic_format_parse_context(
- basic_string_view<Char> format_str, ErrorHandler eh = {},
- int next_arg_id = 0)
- : ErrorHandler(eh), format_str_(format_str), next_arg_id_(next_arg_id) {}
-
- /**
- Returns an iterator to the beginning of the format string range being
- parsed.
- */
- constexpr auto begin() const noexcept -> iterator {
- return format_str_.begin();
- }
-
- /**
- Returns an iterator past the end of the format string range being parsed.
- */
- constexpr auto end() const noexcept -> iterator { return format_str_.end(); }
-
- /** Advances the begin iterator to ``it``. */
- FMT_CONSTEXPR void advance_to(iterator it) {
- format_str_.remove_prefix(detail::to_unsigned(it - begin()));
- }
-
- /**
- Reports an error if using the manual argument indexing; otherwise returns
- the next argument index and switches to the automatic indexing.
- */
- FMT_CONSTEXPR auto next_arg_id() -> int {
- if (next_arg_id_ < 0) {
- on_error("cannot switch from manual to automatic argument indexing");
- return 0;
- }
- int id = next_arg_id_++;
- do_check_arg_id(id);
- return id;
- }
-
- /**
- Reports an error if using the automatic argument indexing; otherwise
- switches to the manual indexing.
- */
- FMT_CONSTEXPR void check_arg_id(int id) {
- if (next_arg_id_ > 0) {
- on_error("cannot switch from automatic to manual argument indexing");
- return;
- }
- next_arg_id_ = -1;
- do_check_arg_id(id);
- }
- FMT_CONSTEXPR void check_arg_id(basic_string_view<Char>) {}
- FMT_CONSTEXPR void check_dynamic_spec(int arg_id);
-
- FMT_CONSTEXPR void on_error(const char* message) {
- ErrorHandler::on_error(message);
- }
-
- constexpr auto error_handler() const -> ErrorHandler { return *this; }
-};
-
-using format_parse_context = basic_format_parse_context<char>;
-
-FMT_BEGIN_DETAIL_NAMESPACE
-// A parse context with extra data used only in compile-time checks.
-template <typename Char, typename ErrorHandler = detail::error_handler>
-class compile_parse_context
- : public basic_format_parse_context<Char, ErrorHandler> {
- private:
- int num_args_;
- const type* types_;
- using base = basic_format_parse_context<Char, ErrorHandler>;
-
- public:
- explicit FMT_CONSTEXPR compile_parse_context(
- basic_string_view<Char> format_str, int num_args, const type* types,
- ErrorHandler eh = {}, int next_arg_id = 0)
- : base(format_str, eh, next_arg_id), num_args_(num_args), types_(types) {}
-
- constexpr auto num_args() const -> int { return num_args_; }
- constexpr auto arg_type(int id) const -> type { return types_[id]; }
-
- FMT_CONSTEXPR auto next_arg_id() -> int {
- int id = base::next_arg_id();
- if (id >= num_args_) this->on_error("argument not found");
- return id;
- }
-
- FMT_CONSTEXPR void check_arg_id(int id) {
- base::check_arg_id(id);
- if (id >= num_args_) this->on_error("argument not found");
- }
- using base::check_arg_id;
-
- FMT_CONSTEXPR void check_dynamic_spec(int arg_id) {
- if (arg_id < num_args_ && types_ && !is_integral_type(types_[arg_id]))
- this->on_error("width/precision is not integer");
- }
-};
-FMT_END_DETAIL_NAMESPACE
-
-template <typename Char, typename ErrorHandler>
-FMT_CONSTEXPR void
-basic_format_parse_context<Char, ErrorHandler>::do_check_arg_id(int id) {
- // Argument id is only checked at compile-time during parsing because
- // formatting has its own validation.
- if (detail::is_constant_evaluated() && FMT_GCC_VERSION >= 1200) {
- using context = detail::compile_parse_context<Char, ErrorHandler>;
- if (id >= static_cast<context*>(this)->num_args())
- on_error("argument not found");
- }
-}
-
-template <typename Char, typename ErrorHandler>
-FMT_CONSTEXPR void
-basic_format_parse_context<Char, ErrorHandler>::check_dynamic_spec(int arg_id) {
- if (detail::is_constant_evaluated()) {
- using context = detail::compile_parse_context<Char, ErrorHandler>;
- static_cast<context*>(this)->check_dynamic_spec(arg_id);
- }
-}
-
-template <typename Context> class basic_format_arg;
-template <typename Context> class basic_format_args;
-template <typename Context> class dynamic_format_arg_store;
-
-// A formatter for objects of type T.
-template <typename T, typename Char = char, typename Enable = void>
-struct formatter {
- // A deleted default constructor indicates a disabled formatter.
- formatter() = delete;
-};
-
-// Specifies if T has an enabled formatter specialization. A type can be
-// formattable even if it doesn't have a formatter e.g. via a conversion.
-template <typename T, typename Context>
-using has_formatter =
- std::is_constructible<typename Context::template formatter_type<T>>;
-
-// Checks whether T is a container with contiguous storage.
-template <typename T> struct is_contiguous : std::false_type {};
-template <typename Char>
-struct is_contiguous<std::basic_string<Char>> : std::true_type {};
-
-class appender;
-
-FMT_BEGIN_DETAIL_NAMESPACE
-
-template <typename Context, typename T>
-constexpr auto has_const_formatter_impl(T*)
- -> decltype(typename Context::template formatter_type<T>().format(
- std::declval<const T&>(), std::declval<Context&>()),
- true) {
- return true;
-}
-template <typename Context>
-constexpr auto has_const_formatter_impl(...) -> bool {
- return false;
-}
-template <typename T, typename Context>
-constexpr auto has_const_formatter() -> bool {
- return has_const_formatter_impl<Context>(static_cast<T*>(nullptr));
-}
-
-// Extracts a reference to the container from back_insert_iterator.
-template <typename Container>
-inline auto get_container(std::back_insert_iterator<Container> it)
- -> Container& {
- using base = std::back_insert_iterator<Container>;
- struct accessor : base {
- accessor(base b) : base(b) {}
- using base::container;
- };
- return *accessor(it).container;
-}
-
-template <typename Char, typename InputIt, typename OutputIt>
-FMT_CONSTEXPR auto copy_str(InputIt begin, InputIt end, OutputIt out)
- -> OutputIt {
- while (begin != end) *out++ = static_cast<Char>(*begin++);
- return out;
-}
-
-template <typename Char, typename T, typename U,
- FMT_ENABLE_IF(
- std::is_same<remove_const_t<T>, U>::value&& is_char<U>::value)>
-FMT_CONSTEXPR auto copy_str(T* begin, T* end, U* out) -> U* {
- if (is_constant_evaluated()) return copy_str<Char, T*, U*>(begin, end, out);
- auto size = to_unsigned(end - begin);
- memcpy(out, begin, size * sizeof(U));
- return out + size;
-}
-
-/**
- \rst
- A contiguous memory buffer with an optional growing ability. It is an internal
- class and shouldn't be used directly, only via `~fmt::basic_memory_buffer`.
- \endrst
- */
-template <typename T> class buffer {
- private:
- T* ptr_;
- size_t size_;
- size_t capacity_;
-
- protected:
- // Don't initialize ptr_ since it is not accessed to save a few cycles.
- FMT_MSC_WARNING(suppress : 26495)
- buffer(size_t sz) noexcept : size_(sz), capacity_(sz) {}
-
- FMT_CONSTEXPR20 buffer(T* p = nullptr, size_t sz = 0, size_t cap = 0) noexcept
- : ptr_(p), size_(sz), capacity_(cap) {}
-
- FMT_CONSTEXPR20 ~buffer() = default;
- buffer(buffer&&) = default;
-
- /** Sets the buffer data and capacity. */
- FMT_CONSTEXPR void set(T* buf_data, size_t buf_capacity) noexcept {
- ptr_ = buf_data;
- capacity_ = buf_capacity;
- }
-
- /** Increases the buffer capacity to hold at least *capacity* elements. */
- virtual FMT_CONSTEXPR20 void grow(size_t capacity) = 0;
-
- public:
- using value_type = T;
- using const_reference = const T&;
-
- buffer(const buffer&) = delete;
- void operator=(const buffer&) = delete;
-
- auto begin() noexcept -> T* { return ptr_; }
- auto end() noexcept -> T* { return ptr_ + size_; }
-
- auto begin() const noexcept -> const T* { return ptr_; }
- auto end() const noexcept -> const T* { return ptr_ + size_; }
-
- /** Returns the size of this buffer. */
- constexpr auto size() const noexcept -> size_t { return size_; }
-
- /** Returns the capacity of this buffer. */
- constexpr auto capacity() const noexcept -> size_t { return capacity_; }
-
- /** Returns a pointer to the buffer data. */
- FMT_CONSTEXPR auto data() noexcept -> T* { return ptr_; }
-
- /** Returns a pointer to the buffer data. */
- FMT_CONSTEXPR auto data() const noexcept -> const T* { return ptr_; }
-
- /** Clears this buffer. */
- void clear() { size_ = 0; }
-
- // Tries resizing the buffer to contain *count* elements. If T is a POD type
- // the new elements may not be initialized.
- FMT_CONSTEXPR20 void try_resize(size_t count) {
- try_reserve(count);
- size_ = count <= capacity_ ? count : capacity_;
- }
-
- // Tries increasing the buffer capacity to *new_capacity*. It can increase the
- // capacity by a smaller amount than requested but guarantees there is space
- // for at least one additional element either by increasing the capacity or by
- // flushing the buffer if it is full.
- FMT_CONSTEXPR20 void try_reserve(size_t new_capacity) {
- if (new_capacity > capacity_) grow(new_capacity);
- }
-
- FMT_CONSTEXPR20 void push_back(const T& value) {
- try_reserve(size_ + 1);
- ptr_[size_++] = value;
- }
-
- /** Appends data to the end of the buffer. */
- template <typename U> void append(const U* begin, const U* end);
-
- template <typename Idx> FMT_CONSTEXPR auto operator[](Idx index) -> T& {
- return ptr_[index];
- }
- template <typename Idx>
- FMT_CONSTEXPR auto operator[](Idx index) const -> const T& {
- return ptr_[index];
- }
-};
-
-struct buffer_traits {
- explicit buffer_traits(size_t) {}
- auto count() const -> size_t { return 0; }
- auto limit(size_t size) -> size_t { return size; }
-};
-
-class fixed_buffer_traits {
- private:
- size_t count_ = 0;
- size_t limit_;
-
- public:
- explicit fixed_buffer_traits(size_t limit) : limit_(limit) {}
- auto count() const -> size_t { return count_; }
- auto limit(size_t size) -> size_t {
- size_t n = limit_ > count_ ? limit_ - count_ : 0;
- count_ += size;
- return size < n ? size : n;
- }
-};
-
-// A buffer that writes to an output iterator when flushed.
-template <typename OutputIt, typename T, typename Traits = buffer_traits>
-class iterator_buffer final : public Traits, public buffer<T> {
- private:
- OutputIt out_;
- enum { buffer_size = 256 };
- T data_[buffer_size];
-
- protected:
- FMT_CONSTEXPR20 void grow(size_t) override {
- if (this->size() == buffer_size) flush();
- }
-
- void flush() {
- auto size = this->size();
- this->clear();
- out_ = copy_str<T>(data_, data_ + this->limit(size), out_);
- }
-
- public:
- explicit iterator_buffer(OutputIt out, size_t n = buffer_size)
- : Traits(n), buffer<T>(data_, 0, buffer_size), out_(out) {}
- iterator_buffer(iterator_buffer&& other)
- : Traits(other), buffer<T>(data_, 0, buffer_size), out_(other.out_) {}
- ~iterator_buffer() { flush(); }
-
- auto out() -> OutputIt {
- flush();
- return out_;
- }
- auto count() const -> size_t { return Traits::count() + this->size(); }
-};
-
-template <typename T>
-class iterator_buffer<T*, T, fixed_buffer_traits> final
- : public fixed_buffer_traits,
- public buffer<T> {
- private:
- T* out_;
- enum { buffer_size = 256 };
- T data_[buffer_size];
-
- protected:
- FMT_CONSTEXPR20 void grow(size_t) override {
- if (this->size() == this->capacity()) flush();
- }
-
- void flush() {
- size_t n = this->limit(this->size());
- if (this->data() == out_) {
- out_ += n;
- this->set(data_, buffer_size);
- }
- this->clear();
- }
-
- public:
- explicit iterator_buffer(T* out, size_t n = buffer_size)
- : fixed_buffer_traits(n), buffer<T>(out, 0, n), out_(out) {}
- iterator_buffer(iterator_buffer&& other)
- : fixed_buffer_traits(other),
- buffer<T>(std::move(other)),
- out_(other.out_) {
- if (this->data() != out_) {
- this->set(data_, buffer_size);
- this->clear();
- }
- }
- ~iterator_buffer() { flush(); }
-
- auto out() -> T* {
- flush();
- return out_;
- }
- auto count() const -> size_t {
- return fixed_buffer_traits::count() + this->size();
- }
-};
-
-template <typename T> class iterator_buffer<T*, T> final : public buffer<T> {
- protected:
- FMT_CONSTEXPR20 void grow(size_t) override {}
-
- public:
- explicit iterator_buffer(T* out, size_t = 0) : buffer<T>(out, 0, ~size_t()) {}
-
- auto out() -> T* { return &*this->end(); }
-};
-
-// A buffer that writes to a container with the contiguous storage.
-template <typename Container>
-class iterator_buffer<std::back_insert_iterator<Container>,
- enable_if_t<is_contiguous<Container>::value,
- typename Container::value_type>>
- final : public buffer<typename Container::value_type> {
- private:
- Container& container_;
-
- protected:
- FMT_CONSTEXPR20 void grow(size_t capacity) override {
- container_.resize(capacity);
- this->set(&container_[0], capacity);
- }
-
- public:
- explicit iterator_buffer(Container& c)
- : buffer<typename Container::value_type>(c.size()), container_(c) {}
- explicit iterator_buffer(std::back_insert_iterator<Container> out, size_t = 0)
- : iterator_buffer(get_container(out)) {}
-
- auto out() -> std::back_insert_iterator<Container> {
- return std::back_inserter(container_);
- }
-};
-
-// A buffer that counts the number of code units written discarding the output.
-template <typename T = char> class counting_buffer final : public buffer<T> {
- private:
- enum { buffer_size = 256 };
- T data_[buffer_size];
- size_t count_ = 0;
-
- protected:
- FMT_CONSTEXPR20 void grow(size_t) override {
- if (this->size() != buffer_size) return;
- count_ += this->size();
- this->clear();
- }
-
- public:
- counting_buffer() : buffer<T>(data_, 0, buffer_size) {}
-
- auto count() -> size_t { return count_ + this->size(); }
-};
-
-template <typename T>
-using buffer_appender = conditional_t<std::is_same<T, char>::value, appender,
- std::back_insert_iterator<buffer<T>>>;
-
-// Maps an output iterator to a buffer.
-template <typename T, typename OutputIt>
-auto get_buffer(OutputIt out) -> iterator_buffer<OutputIt, T> {
- return iterator_buffer<OutputIt, T>(out);
-}
-
-template <typename Buffer>
-auto get_iterator(Buffer& buf) -> decltype(buf.out()) {
- return buf.out();
-}
-template <typename T> auto get_iterator(buffer<T>& buf) -> buffer_appender<T> {
- return buffer_appender<T>(buf);
-}
-
-template <typename T, typename Char = char, typename Enable = void>
-struct fallback_formatter {
- fallback_formatter() = delete;
-};
-
-// Specifies if T has an enabled fallback_formatter specialization.
-template <typename T, typename Char>
-using has_fallback_formatter =
-#ifdef FMT_DEPRECATED_OSTREAM
- std::is_constructible<fallback_formatter<T, Char>>;
-#else
- std::false_type;
-#endif
-
-struct view {};
-
-template <typename Char, typename T> struct named_arg : view {
- const Char* name;
- const T& value;
- named_arg(const Char* n, const T& v) : name(n), value(v) {}
-};
-
-template <typename Char> struct named_arg_info {
- const Char* name;
- int id;
-};
-
-template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS>
-struct arg_data {
- // args_[0].named_args points to named_args_ to avoid bloating format_args.
- // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning.
- T args_[1 + (NUM_ARGS != 0 ? NUM_ARGS : +1)];
- named_arg_info<Char> named_args_[NUM_NAMED_ARGS];
-
- template <typename... U>
- arg_data(const U&... init) : args_{T(named_args_, NUM_NAMED_ARGS), init...} {}
- arg_data(const arg_data& other) = delete;
- auto args() const -> const T* { return args_ + 1; }
- auto named_args() -> named_arg_info<Char>* { return named_args_; }
-};
-
-template <typename T, typename Char, size_t NUM_ARGS>
-struct arg_data<T, Char, NUM_ARGS, 0> {
- // +1 to workaround a bug in gcc 7.5 that causes duplicated-branches warning.
- T args_[NUM_ARGS != 0 ? NUM_ARGS : +1];
-
- template <typename... U>
- FMT_CONSTEXPR FMT_INLINE arg_data(const U&... init) : args_{init...} {}
- FMT_CONSTEXPR FMT_INLINE auto args() const -> const T* { return args_; }
- FMT_CONSTEXPR FMT_INLINE auto named_args() -> std::nullptr_t {
- return nullptr;
- }
-};
-
-template <typename Char>
-inline void init_named_args(named_arg_info<Char>*, int, int) {}
-
-template <typename T> struct is_named_arg : std::false_type {};
-template <typename T> struct is_statically_named_arg : std::false_type {};
-
-template <typename T, typename Char>
-struct is_named_arg<named_arg<Char, T>> : std::true_type {};
-
-template <typename Char, typename T, typename... Tail,
- FMT_ENABLE_IF(!is_named_arg<T>::value)>
-void init_named_args(named_arg_info<Char>* named_args, int arg_count,
- int named_arg_count, const T&, const Tail&... args) {
- init_named_args(named_args, arg_count + 1, named_arg_count, args...);
-}
-
-template <typename Char, typename T, typename... Tail,
- FMT_ENABLE_IF(is_named_arg<T>::value)>
-void init_named_args(named_arg_info<Char>* named_args, int arg_count,
- int named_arg_count, const T& arg, const Tail&... args) {
- named_args[named_arg_count++] = {arg.name, arg_count};
- init_named_args(named_args, arg_count + 1, named_arg_count, args...);
-}
-
-template <typename... Args>
-FMT_CONSTEXPR FMT_INLINE void init_named_args(std::nullptr_t, int, int,
- const Args&...) {}
-
-template <bool B = false> constexpr auto count() -> size_t { return B ? 1 : 0; }
-template <bool B1, bool B2, bool... Tail> constexpr auto count() -> size_t {
- return (B1 ? 1 : 0) + count<B2, Tail...>();
-}
-
-template <typename... Args> constexpr auto count_named_args() -> size_t {
- return count<is_named_arg<Args>::value...>();
-}
-
-template <typename... Args>
-constexpr auto count_statically_named_args() -> size_t {
- return count<is_statically_named_arg<Args>::value...>();
-}
-
-struct unformattable {};
-struct unformattable_char : unformattable {};
-struct unformattable_const : unformattable {};
-struct unformattable_pointer : unformattable {};
-
-template <typename Char> struct string_value {
- const Char* data;
- size_t size;
-};
-
-template <typename Char> struct named_arg_value {
- const named_arg_info<Char>* data;
- size_t size;
-};
-
-template <typename Context> struct custom_value {
- using parse_context = typename Context::parse_context_type;
- void* value;
- void (*format)(void* arg, parse_context& parse_ctx, Context& ctx);
-};
-
-// A formatting argument value.
-template <typename Context> class value {
- public:
- using char_type = typename Context::char_type;
-
- union {
- monostate no_value;
- int int_value;
- unsigned uint_value;
- long long long_long_value;
- unsigned long long ulong_long_value;
- int128_opt int128_value;
- uint128_opt uint128_value;
- bool bool_value;
- char_type char_value;
- float float_value;
- double double_value;
- long double long_double_value;
- const void* pointer;
- string_value<char_type> string;
- custom_value<Context> custom;
- named_arg_value<char_type> named_args;
- };
-
- constexpr FMT_INLINE value() : no_value() {}
- constexpr FMT_INLINE value(int val) : int_value(val) {}
- constexpr FMT_INLINE value(unsigned val) : uint_value(val) {}
- constexpr FMT_INLINE value(long long val) : long_long_value(val) {}
- constexpr FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {}
- FMT_INLINE value(int128_opt val) : int128_value(val) {}
- FMT_INLINE value(uint128_opt val) : uint128_value(val) {}
- constexpr FMT_INLINE value(float val) : float_value(val) {}
- constexpr FMT_INLINE value(double val) : double_value(val) {}
- FMT_INLINE value(long double val) : long_double_value(val) {}
- constexpr FMT_INLINE value(bool val) : bool_value(val) {}
- constexpr FMT_INLINE value(char_type val) : char_value(val) {}
- FMT_CONSTEXPR FMT_INLINE value(const char_type* val) {
- string.data = val;
- if (is_constant_evaluated()) string.size = {};
- }
- FMT_CONSTEXPR FMT_INLINE value(basic_string_view<char_type> val) {
- string.data = val.data();
- string.size = val.size();
- }
- FMT_INLINE value(const void* val) : pointer(val) {}
- FMT_INLINE value(const named_arg_info<char_type>* args, size_t size)
- : named_args{args, size} {}
-
- template <typename T> FMT_CONSTEXPR FMT_INLINE value(T& val) {
- using value_type = remove_cvref_t<T>;
- custom.value = const_cast<value_type*>(&val);
- // Get the formatter type through the context to allow different contexts
- // have different extension points, e.g. `formatter<T>` for `format` and
- // `printf_formatter<T>` for `printf`.
- custom.format = format_custom_arg<
- value_type,
- conditional_t<has_formatter<value_type, Context>::value,
- typename Context::template formatter_type<value_type>,
- fallback_formatter<value_type, char_type>>>;
- }
- value(unformattable);
- value(unformattable_char);
- value(unformattable_const);
- value(unformattable_pointer);
-
- private:
- // Formats an argument of a custom type, such as a user-defined class.
- template <typename T, typename Formatter>
- static void format_custom_arg(void* arg,
- typename Context::parse_context_type& parse_ctx,
- Context& ctx) {
- auto f = Formatter();
- parse_ctx.advance_to(f.parse(parse_ctx));
- using qualified_type =
- conditional_t<has_const_formatter<T, Context>(), const T, T>;
- ctx.advance_to(f.format(*static_cast<qualified_type*>(arg), ctx));
- }
-};
-
-template <typename Context, typename T>
-FMT_CONSTEXPR auto make_arg(T&& value) -> basic_format_arg<Context>;
-
-// To minimize the number of types we need to deal with, long is translated
-// either to int or to long long depending on its size.
-enum { long_short = sizeof(long) == sizeof(int) };
-using long_type = conditional_t<long_short, int, long long>;
-using ulong_type = conditional_t<long_short, unsigned, unsigned long long>;
-
-#ifdef __cpp_lib_byte
-inline auto format_as(std::byte b) -> unsigned char {
- return static_cast<unsigned char>(b);
-}
-#endif
-
-template <typename T> struct has_format_as {
- template <typename U, typename V = decltype(format_as(U())),
- FMT_ENABLE_IF(std::is_enum<U>::value&& std::is_integral<V>::value)>
- static auto check(U*) -> std::true_type;
- static auto check(...) -> std::false_type;
-
- enum { value = decltype(check(static_cast<T*>(nullptr)))::value };
-};
-
-// Maps formatting arguments to core types.
-// arg_mapper reports errors by returning unformattable instead of using
-// static_assert because it's used in the is_formattable trait.
-template <typename Context> struct arg_mapper {
- using char_type = typename Context::char_type;
-
- FMT_CONSTEXPR FMT_INLINE auto map(signed char val) -> int { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(unsigned char val) -> unsigned {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(short val) -> int { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(unsigned short val) -> unsigned {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(int val) -> int { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(unsigned val) -> unsigned { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(long val) -> long_type { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(unsigned long val) -> ulong_type {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(long long val) -> long long { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(unsigned long long val)
- -> unsigned long long {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(int128_opt val) -> int128_opt {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(uint128_opt val) -> uint128_opt {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(bool val) -> bool { return val; }
-
- template <typename T, FMT_ENABLE_IF(std::is_same<T, char>::value ||
- std::is_same<T, char_type>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(T val) -> char_type {
- return val;
- }
- template <typename T, enable_if_t<(std::is_same<T, wchar_t>::value ||
-#ifdef __cpp_char8_t
- std::is_same<T, char8_t>::value ||
-#endif
- std::is_same<T, char16_t>::value ||
- std::is_same<T, char32_t>::value) &&
- !std::is_same<T, char_type>::value,
- int> = 0>
- FMT_CONSTEXPR FMT_INLINE auto map(T) -> unformattable_char {
- return {};
- }
-
- FMT_CONSTEXPR FMT_INLINE auto map(float val) -> float { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(double val) -> double { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(long double val) -> long double {
- return val;
- }
-
- FMT_CONSTEXPR FMT_INLINE auto map(char_type* val) -> const char_type* {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(const char_type* val) -> const char_type* {
- return val;
- }
- template <typename T,
- FMT_ENABLE_IF(is_string<T>::value && !std::is_pointer<T>::value &&
- std::is_same<char_type, char_t<T>>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
- -> basic_string_view<char_type> {
- return to_string_view(val);
- }
- template <typename T,
- FMT_ENABLE_IF(is_string<T>::value && !std::is_pointer<T>::value &&
- !std::is_same<char_type, char_t<T>>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(const T&) -> unformattable_char {
- return {};
- }
- template <typename T,
- FMT_ENABLE_IF(
- std::is_convertible<T, basic_string_view<char_type>>::value &&
- !is_string<T>::value && !has_formatter<T, Context>::value &&
- !has_fallback_formatter<T, char_type>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
- -> basic_string_view<char_type> {
- return basic_string_view<char_type>(val);
- }
- template <typename T,
- FMT_ENABLE_IF(
- std::is_convertible<T, std_string_view<char_type>>::value &&
- !std::is_convertible<T, basic_string_view<char_type>>::value &&
- !is_string<T>::value && !has_formatter<T, Context>::value &&
- !has_fallback_formatter<T, char_type>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
- -> basic_string_view<char_type> {
- return std_string_view<char_type>(val);
- }
-
- FMT_CONSTEXPR FMT_INLINE auto map(void* val) -> const void* { return val; }
- FMT_CONSTEXPR FMT_INLINE auto map(const void* val) -> const void* {
- return val;
- }
- FMT_CONSTEXPR FMT_INLINE auto map(std::nullptr_t val) -> const void* {
- return val;
- }
-
- // We use SFINAE instead of a const T* parameter to avoid conflicting with
- // the C array overload.
- template <
- typename T,
- FMT_ENABLE_IF(
- std::is_pointer<T>::value || std::is_member_pointer<T>::value ||
- std::is_function<typename std::remove_pointer<T>::type>::value ||
- (std::is_convertible<const T&, const void*>::value &&
- !std::is_convertible<const T&, const char_type*>::value &&
- !has_formatter<T, Context>::value))>
- FMT_CONSTEXPR auto map(const T&) -> unformattable_pointer {
- return {};
- }
-
- template <typename T, std::size_t N,
- FMT_ENABLE_IF(!std::is_same<T, wchar_t>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(const T (&values)[N]) -> const T (&)[N] {
- return values;
- }
-
- template <typename T,
- FMT_ENABLE_IF(
- std::is_enum<T>::value&& std::is_convertible<T, int>::value &&
- !has_format_as<T>::value && !has_formatter<T, Context>::value &&
- !has_fallback_formatter<T, char_type>::value)>
- FMT_DEPRECATED FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
- -> decltype(std::declval<arg_mapper>().map(
- static_cast<underlying_t<T>>(val))) {
- return map(static_cast<underlying_t<T>>(val));
- }
-
- template <typename T, FMT_ENABLE_IF(has_format_as<T>::value &&
- !has_formatter<T, Context>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(const T& val)
- -> decltype(std::declval<arg_mapper>().map(format_as(T()))) {
- return map(format_as(val));
- }
-
- template <typename T, typename U = remove_cvref_t<T>>
- struct formattable
- : bool_constant<has_const_formatter<U, Context>() ||
- !std::is_const<remove_reference_t<T>>::value ||
- has_fallback_formatter<U, char_type>::value> {};
-
-#if (FMT_MSC_VERSION != 0 && FMT_MSC_VERSION < 1910) || \
- FMT_ICC_VERSION != 0 || defined(__NVCC__)
- // Workaround a bug in MSVC and Intel (Issue 2746).
- template <typename T> FMT_CONSTEXPR FMT_INLINE auto do_map(T&& val) -> T& {
- return val;
- }
-#else
- template <typename T, FMT_ENABLE_IF(formattable<T>::value)>
- FMT_CONSTEXPR FMT_INLINE auto do_map(T&& val) -> T& {
- return val;
- }
- template <typename T, FMT_ENABLE_IF(!formattable<T>::value)>
- FMT_CONSTEXPR FMT_INLINE auto do_map(T&&) -> unformattable_const {
- return {};
- }
-#endif
-
- template <typename T, typename U = remove_cvref_t<T>,
- FMT_ENABLE_IF(!is_string<U>::value && !is_char<U>::value &&
- !std::is_array<U>::value &&
- !std::is_pointer<U>::value &&
- !has_format_as<U>::value &&
- (has_formatter<U, Context>::value ||
- has_fallback_formatter<U, char_type>::value))>
- FMT_CONSTEXPR FMT_INLINE auto map(T&& val)
- -> decltype(this->do_map(std::forward<T>(val))) {
- return do_map(std::forward<T>(val));
- }
-
- template <typename T, FMT_ENABLE_IF(is_named_arg<T>::value)>
- FMT_CONSTEXPR FMT_INLINE auto map(const T& named_arg)
- -> decltype(std::declval<arg_mapper>().map(named_arg.value)) {
- return map(named_arg.value);
- }
-
- auto map(...) -> unformattable { return {}; }
-};
-
-// A type constant after applying arg_mapper<Context>.
-template <typename T, typename Context>
-using mapped_type_constant =
- type_constant<decltype(arg_mapper<Context>().map(std::declval<const T&>())),
- typename Context::char_type>;
-
-enum { packed_arg_bits = 4 };
-// Maximum number of arguments with packed types.
-enum { max_packed_args = 62 / packed_arg_bits };
-enum : unsigned long long { is_unpacked_bit = 1ULL << 63 };
-enum : unsigned long long { has_named_args_bit = 1ULL << 62 };
-
-FMT_END_DETAIL_NAMESPACE
-
-// An output iterator that appends to a buffer.
-// It is used to reduce symbol sizes for the common case.
-class appender : public std::back_insert_iterator<detail::buffer<char>> {
- using base = std::back_insert_iterator<detail::buffer<char>>;
-
- template <typename T>
- friend auto get_buffer(appender out) -> detail::buffer<char>& {
- return detail::get_container(out);
- }
-
- public:
- using std::back_insert_iterator<detail::buffer<char>>::back_insert_iterator;
- appender(base it) noexcept : base(it) {}
- FMT_UNCHECKED_ITERATOR(appender);
-
- auto operator++() noexcept -> appender& { return *this; }
- auto operator++(int) noexcept -> appender { return *this; }
-};
-
-// A formatting argument. It is a trivially copyable/constructible type to
-// allow storage in basic_memory_buffer.
-template <typename Context> class basic_format_arg {
- private:
- detail::value<Context> value_;
- detail::type type_;
-
- template <typename ContextType, typename T>
- friend FMT_CONSTEXPR auto detail::make_arg(T&& value)
- -> basic_format_arg<ContextType>;
-
- template <typename Visitor, typename Ctx>
- friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis,
- const basic_format_arg<Ctx>& arg)
- -> decltype(vis(0));
-
- friend class basic_format_args<Context>;
- friend class dynamic_format_arg_store<Context>;
-
- using char_type = typename Context::char_type;
-
- template <typename T, typename Char, size_t NUM_ARGS, size_t NUM_NAMED_ARGS>
- friend struct detail::arg_data;
-
- basic_format_arg(const detail::named_arg_info<char_type>* args, size_t size)
- : value_(args, size) {}
-
- public:
- class handle {
- public:
- explicit handle(detail::custom_value<Context> custom) : custom_(custom) {}
-
- void format(typename Context::parse_context_type& parse_ctx,
- Context& ctx) const {
- custom_.format(custom_.value, parse_ctx, ctx);
- }
-
- private:
- detail::custom_value<Context> custom_;
- };
-
- constexpr basic_format_arg() : type_(detail::type::none_type) {}
-
- constexpr explicit operator bool() const noexcept {
- return type_ != detail::type::none_type;
- }
-
- auto type() const -> detail::type { return type_; }
-
- auto is_integral() const -> bool { return detail::is_integral_type(type_); }
- auto is_arithmetic() const -> bool {
- return detail::is_arithmetic_type(type_);
- }
-};
-
-/**
- \rst
- Visits an argument dispatching to the appropriate visit method based on
- the argument type. For example, if the argument type is ``double`` then
- ``vis(value)`` will be called with the value of type ``double``.
- \endrst
- */
-template <typename Visitor, typename Context>
-FMT_CONSTEXPR FMT_INLINE auto visit_format_arg(
- Visitor&& vis, const basic_format_arg<Context>& arg) -> decltype(vis(0)) {
- switch (arg.type_) {
- case detail::type::none_type:
- break;
- case detail::type::int_type:
- return vis(arg.value_.int_value);
- case detail::type::uint_type:
- return vis(arg.value_.uint_value);
- case detail::type::long_long_type:
- return vis(arg.value_.long_long_value);
- case detail::type::ulong_long_type:
- return vis(arg.value_.ulong_long_value);
- case detail::type::int128_type:
- return vis(detail::convert_for_visit(arg.value_.int128_value));
- case detail::type::uint128_type:
- return vis(detail::convert_for_visit(arg.value_.uint128_value));
- case detail::type::bool_type:
- return vis(arg.value_.bool_value);
- case detail::type::char_type:
- return vis(arg.value_.char_value);
- case detail::type::float_type:
- return vis(arg.value_.float_value);
- case detail::type::double_type:
- return vis(arg.value_.double_value);
- case detail::type::long_double_type:
- return vis(arg.value_.long_double_value);
- case detail::type::cstring_type:
- return vis(arg.value_.string.data);
- case detail::type::string_type:
- using sv = basic_string_view<typename Context::char_type>;
- return vis(sv(arg.value_.string.data, arg.value_.string.size));
- case detail::type::pointer_type:
- return vis(arg.value_.pointer);
- case detail::type::custom_type:
- return vis(typename basic_format_arg<Context>::handle(arg.value_.custom));
- }
- return vis(monostate());
-}
-
-FMT_BEGIN_DETAIL_NAMESPACE
-
-template <typename Char, typename InputIt>
-auto copy_str(InputIt begin, InputIt end, appender out) -> appender {
- get_container(out).append(begin, end);
- return out;
-}
-
-template <typename Char, typename R, typename OutputIt>
-FMT_CONSTEXPR auto copy_str(R&& rng, OutputIt out) -> OutputIt {
- return detail::copy_str<Char>(rng.begin(), rng.end(), out);
-}
-
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500
-// A workaround for gcc 4.8 to make void_t work in a SFINAE context.
-template <typename... Ts> struct void_t_impl { using type = void; };
-template <typename... Ts>
-using void_t = typename detail::void_t_impl<Ts...>::type;
-#else
-template <typename...> using void_t = void;
-#endif
-
-template <typename It, typename T, typename Enable = void>
-struct is_output_iterator : std::false_type {};
-
-template <typename It, typename T>
-struct is_output_iterator<
- It, T,
- void_t<typename std::iterator_traits<It>::iterator_category,
- decltype(*std::declval<It>() = std::declval<T>())>>
- : std::true_type {};
-
-template <typename OutputIt>
-struct is_back_insert_iterator : std::false_type {};
-template <typename Container>
-struct is_back_insert_iterator<std::back_insert_iterator<Container>>
- : std::true_type {};
-
-template <typename OutputIt>
-struct is_contiguous_back_insert_iterator : std::false_type {};
-template <typename Container>
-struct is_contiguous_back_insert_iterator<std::back_insert_iterator<Container>>
- : is_contiguous<Container> {};
-template <>
-struct is_contiguous_back_insert_iterator<appender> : std::true_type {};
-
-// A type-erased reference to an std::locale to avoid a heavy <locale> include.
-class locale_ref {
- private:
- const void* locale_; // A type-erased pointer to std::locale.
-
- public:
- constexpr locale_ref() : locale_(nullptr) {}
- template <typename Locale> explicit locale_ref(const Locale& loc);
-
- explicit operator bool() const noexcept { return locale_ != nullptr; }
-
- template <typename Locale> auto get() const -> Locale;
-};
-
-template <typename> constexpr auto encode_types() -> unsigned long long {
- return 0;
-}
-
-template <typename Context, typename Arg, typename... Args>
-constexpr auto encode_types() -> unsigned long long {
- return static_cast<unsigned>(mapped_type_constant<Arg, Context>::value) |
- (encode_types<Context, Args...>() << packed_arg_bits);
-}
-
-template <typename Context, typename T>
-FMT_CONSTEXPR FMT_INLINE auto make_value(T&& val) -> value<Context> {
- using arg_type = remove_cvref_t<decltype(arg_mapper<Context>().map(val))>;
-
- constexpr bool formattable_char =
- !std::is_same<arg_type, unformattable_char>::value;
- static_assert(formattable_char, "Mixing character types is disallowed.");
-
- // Formatting of arbitrary pointers is disallowed. If you want to output
- // a pointer cast it to "void *" or "const void *". In particular, this
- // forbids formatting of "[const] volatile char *" which is printed as bool
- // by iostreams.
- constexpr bool formattable_pointer =
- !std::is_same<arg_type, unformattable_pointer>::value;
- static_assert(formattable_pointer,
- "Formatting of non-void pointers is disallowed.");
-
- constexpr bool formattable = !std::is_same<arg_type, unformattable>::value;
- static_assert(
- formattable,
- "Cannot format an argument. To make type T formattable provide a "
- "formatter<T> specialization: https://fmt.dev/latest/api.html#udt");
- return {arg_mapper<Context>().map(val)};
-}
-
-template <typename Context, typename T>
-FMT_CONSTEXPR auto make_arg(T&& value) -> basic_format_arg<Context> {
- basic_format_arg<Context> arg;
- arg.type_ = mapped_type_constant<T, Context>::value;
- arg.value_ = make_value<Context>(value);
- return arg;
-}
-
-// The type template parameter is there to avoid an ODR violation when using
-// a fallback formatter in one translation unit and an implicit conversion in
-// another (not recommended).
-template <bool IS_PACKED, typename Context, type, typename T,
- FMT_ENABLE_IF(IS_PACKED)>
-FMT_CONSTEXPR FMT_INLINE auto make_arg(T&& val) -> value<Context> {
- return make_value<Context>(val);
-}
-
-template <bool IS_PACKED, typename Context, type, typename T,
- FMT_ENABLE_IF(!IS_PACKED)>
-FMT_CONSTEXPR inline auto make_arg(T&& value) -> basic_format_arg<Context> {
- return make_arg<Context>(value);
-}
-FMT_END_DETAIL_NAMESPACE
-
-// Formatting context.
-template <typename OutputIt, typename Char> class basic_format_context {
- public:
- /** The character type for the output. */
- using char_type = Char;
-
- private:
- OutputIt out_;
- basic_format_args<basic_format_context> args_;
- detail::locale_ref loc_;
-
- public:
- using iterator = OutputIt;
- using format_arg = basic_format_arg<basic_format_context>;
- using parse_context_type = basic_format_parse_context<Char>;
- template <typename T> using formatter_type = formatter<T, char_type>;
-
- basic_format_context(basic_format_context&&) = default;
- basic_format_context(const basic_format_context&) = delete;
- void operator=(const basic_format_context&) = delete;
- /**
- Constructs a ``basic_format_context`` object. References to the arguments are
- stored in the object so make sure they have appropriate lifetimes.
- */
- constexpr basic_format_context(
- OutputIt out, basic_format_args<basic_format_context> ctx_args,
- detail::locale_ref loc = detail::locale_ref())
- : out_(out), args_(ctx_args), loc_(loc) {}
-
- constexpr auto arg(int id) const -> format_arg { return args_.get(id); }
- FMT_CONSTEXPR auto arg(basic_string_view<char_type> name) -> format_arg {
- return args_.get(name);
- }
- FMT_CONSTEXPR auto arg_id(basic_string_view<char_type> name) -> int {
- return args_.get_id(name);
- }
- auto args() const -> const basic_format_args<basic_format_context>& {
- return args_;
- }
-
- FMT_CONSTEXPR auto error_handler() -> detail::error_handler { return {}; }
- void on_error(const char* message) { error_handler().on_error(message); }
-
- // Returns an iterator to the beginning of the output range.
- FMT_CONSTEXPR auto out() -> iterator { return out_; }
-
- // Advances the begin iterator to ``it``.
- void advance_to(iterator it) {
- if (!detail::is_back_insert_iterator<iterator>()) out_ = it;
- }
-
- FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; }
-};
-
-template <typename Char>
-using buffer_context =
- basic_format_context<detail::buffer_appender<Char>, Char>;
-using format_context = buffer_context<char>;
-
-// Workaround an alias issue: https://stackoverflow.com/q/62767544/471164.
-#define FMT_BUFFER_CONTEXT(Char) \
- basic_format_context<detail::buffer_appender<Char>, Char>
-
-template <typename T, typename Char = char>
-using is_formattable = bool_constant<
- !std::is_base_of<detail::unformattable,
- decltype(detail::arg_mapper<buffer_context<Char>>().map(
- std::declval<T>()))>::value &&
- !detail::has_fallback_formatter<T, Char>::value>;
-
-/**
- \rst
- An array of references to arguments. It can be implicitly converted into
- `~fmt::basic_format_args` for passing into type-erased formatting functions
- such as `~fmt::vformat`.
- \endrst
- */
-template <typename Context, typename... Args>
-class format_arg_store
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
- // Workaround a GCC template argument substitution bug.
- : public basic_format_args<Context>
-#endif
-{
- private:
- static const size_t num_args = sizeof...(Args);
- static const size_t num_named_args = detail::count_named_args<Args...>();
- static const bool is_packed = num_args <= detail::max_packed_args;
-
- using value_type = conditional_t<is_packed, detail::value<Context>,
- basic_format_arg<Context>>;
-
- detail::arg_data<value_type, typename Context::char_type, num_args,
- num_named_args>
- data_;
-
- friend class basic_format_args<Context>;
-
- static constexpr unsigned long long desc =
- (is_packed ? detail::encode_types<Context, Args...>()
- : detail::is_unpacked_bit | num_args) |
- (num_named_args != 0
- ? static_cast<unsigned long long>(detail::has_named_args_bit)
- : 0);
-
- public:
- template <typename... T>
- FMT_CONSTEXPR FMT_INLINE format_arg_store(T&&... args)
- :
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
- basic_format_args<Context>(*this),
-#endif
- data_{detail::make_arg<
- is_packed, Context,
- detail::mapped_type_constant<remove_cvref_t<T>, Context>::value>(
- FMT_FORWARD(args))...} {
- detail::init_named_args(data_.named_args(), 0, 0, args...);
- }
-};
-
-/**
- \rst
- Constructs a `~fmt::format_arg_store` object that contains references to
- arguments and can be implicitly converted to `~fmt::format_args`. `Context`
- can be omitted in which case it defaults to `~fmt::context`.
- See `~fmt::arg` for lifetime considerations.
- \endrst
- */
-template <typename Context = format_context, typename... Args>
-constexpr auto make_format_args(Args&&... args)
- -> format_arg_store<Context, remove_cvref_t<Args>...> {
- return {FMT_FORWARD(args)...};
-}
-
-/**
- \rst
- Returns a named argument to be used in a formatting function.
- It should only be used in a call to a formatting function or
- `dynamic_format_arg_store::push_back`.
-
- **Example**::
-
- fmt::print("Elapsed time: {s:.2f} seconds", fmt::arg("s", 1.23));
- \endrst
- */
-template <typename Char, typename T>
-inline auto arg(const Char* name, const T& arg) -> detail::named_arg<Char, T> {
- static_assert(!detail::is_named_arg<T>(), "nested named arguments");
- return {name, arg};
-}
-
-/**
- \rst
- A view of a collection of formatting arguments. To avoid lifetime issues it
- should only be used as a parameter type in type-erased functions such as
- ``vformat``::
-
- void vlog(string_view format_str, format_args args); // OK
- format_args args = make_format_args(42); // Error: dangling reference
- \endrst
- */
-template <typename Context> class basic_format_args {
- public:
- using size_type = int;
- using format_arg = basic_format_arg<Context>;
-
- private:
- // A descriptor that contains information about formatting arguments.
- // If the number of arguments is less or equal to max_packed_args then
- // argument types are passed in the descriptor. This reduces binary code size
- // per formatting function call.
- unsigned long long desc_;
- union {
- // If is_packed() returns true then argument values are stored in values_;
- // otherwise they are stored in args_. This is done to improve cache
- // locality and reduce compiled code size since storing larger objects
- // may require more code (at least on x86-64) even if the same amount of
- // data is actually copied to stack. It saves ~10% on the bloat test.
- const detail::value<Context>* values_;
- const format_arg* args_;
- };
-
- constexpr auto is_packed() const -> bool {
- return (desc_ & detail::is_unpacked_bit) == 0;
- }
- auto has_named_args() const -> bool {
- return (desc_ & detail::has_named_args_bit) != 0;
- }
-
- FMT_CONSTEXPR auto type(int index) const -> detail::type {
- int shift = index * detail::packed_arg_bits;
- unsigned int mask = (1 << detail::packed_arg_bits) - 1;
- return static_cast<detail::type>((desc_ >> shift) & mask);
- }
-
- constexpr FMT_INLINE basic_format_args(unsigned long long desc,
- const detail::value<Context>* values)
- : desc_(desc), values_(values) {}
- constexpr basic_format_args(unsigned long long desc, const format_arg* args)
- : desc_(desc), args_(args) {}
-
- public:
- constexpr basic_format_args() : desc_(0), args_(nullptr) {}
-
- /**
- \rst
- Constructs a `basic_format_args` object from `~fmt::format_arg_store`.
- \endrst
- */
- template <typename... Args>
- constexpr FMT_INLINE basic_format_args(
- const format_arg_store<Context, Args...>& store)
- : basic_format_args(format_arg_store<Context, Args...>::desc,
- store.data_.args()) {}
-
- /**
- \rst
- Constructs a `basic_format_args` object from
- `~fmt::dynamic_format_arg_store`.
- \endrst
- */
- constexpr FMT_INLINE basic_format_args(
- const dynamic_format_arg_store<Context>& store)
- : basic_format_args(store.get_types(), store.data()) {}
-
- /**
- \rst
- Constructs a `basic_format_args` object from a dynamic set of arguments.
- \endrst
- */
- constexpr basic_format_args(const format_arg* args, int count)
- : basic_format_args(detail::is_unpacked_bit | detail::to_unsigned(count),
- args) {}
-
- /** Returns the argument with the specified id. */
- FMT_CONSTEXPR auto get(int id) const -> format_arg {
- format_arg arg;
- if (!is_packed()) {
- if (id < max_size()) arg = args_[id];
- return arg;
- }
- if (id >= detail::max_packed_args) return arg;
- arg.type_ = type(id);
- if (arg.type_ == detail::type::none_type) return arg;
- arg.value_ = values_[id];
- return arg;
- }
-
- template <typename Char>
- auto get(basic_string_view<Char> name) const -> format_arg {
- int id = get_id(name);
- return id >= 0 ? get(id) : format_arg();
- }
-
- template <typename Char>
- auto get_id(basic_string_view<Char> name) const -> int {
- if (!has_named_args()) return -1;
- const auto& named_args =
- (is_packed() ? values_[-1] : args_[-1].value_).named_args;
- for (size_t i = 0; i < named_args.size; ++i) {
- if (named_args.data[i].name == name) return named_args.data[i].id;
- }
- return -1;
- }
-
- auto max_size() const -> int {
- unsigned long long max_packed = detail::max_packed_args;
- return static_cast<int>(is_packed() ? max_packed
- : desc_ & ~detail::is_unpacked_bit);
- }
-};
-
-/** An alias to ``basic_format_args<format_context>``. */
-// A separate type would result in shorter symbols but break ABI compatibility
-// between clang and gcc on ARM (#1919).
-using format_args = basic_format_args<format_context>;
-
-// We cannot use enum classes as bit fields because of a gcc bug, so we put them
-// in namespaces instead (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414).
-// Additionally, if an underlying type is specified, older gcc incorrectly warns
-// that the type is too small. Both bugs are fixed in gcc 9.3.
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 903
-# define FMT_ENUM_UNDERLYING_TYPE(type)
-#else
-# define FMT_ENUM_UNDERLYING_TYPE(type) : type
-#endif
-namespace align {
-enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, left, right, center,
- numeric};
-}
-using align_t = align::type;
-namespace sign {
-enum type FMT_ENUM_UNDERLYING_TYPE(unsigned char){none, minus, plus, space};
-}
-using sign_t = sign::type;
-
-FMT_BEGIN_DETAIL_NAMESPACE
-
-// Workaround an array initialization issue in gcc 4.8.
-template <typename Char> struct fill_t {
- private:
- enum { max_size = 4 };
- Char data_[max_size] = {Char(' '), Char(0), Char(0), Char(0)};
- unsigned char size_ = 1;
-
- public:
- FMT_CONSTEXPR void operator=(basic_string_view<Char> s) {
- auto size = s.size();
- if (size > max_size) return throw_format_error("invalid fill");
- for (size_t i = 0; i < size; ++i) data_[i] = s[i];
- size_ = static_cast<unsigned char>(size);
- }
-
- constexpr auto size() const -> size_t { return size_; }
- constexpr auto data() const -> const Char* { return data_; }
-
- FMT_CONSTEXPR auto operator[](size_t index) -> Char& { return data_[index]; }
- FMT_CONSTEXPR auto operator[](size_t index) const -> const Char& {
- return data_[index];
- }
-};
-FMT_END_DETAIL_NAMESPACE
-
-enum class presentation_type : unsigned char {
- none,
- // Integer types should go first,
- dec, // 'd'
- oct, // 'o'
- hex_lower, // 'x'
- hex_upper, // 'X'
- bin_lower, // 'b'
- bin_upper, // 'B'
- hexfloat_lower, // 'a'
- hexfloat_upper, // 'A'
- exp_lower, // 'e'
- exp_upper, // 'E'
- fixed_lower, // 'f'
- fixed_upper, // 'F'
- general_lower, // 'g'
- general_upper, // 'G'
- chr, // 'c'
- string, // 's'
- pointer, // 'p'
- debug // '?'
-};
-
-// Format specifiers for built-in and string types.
-template <typename Char> struct basic_format_specs {
- int width;
- int precision;
- presentation_type type;
- align_t align : 4;
- sign_t sign : 3;
- bool alt : 1; // Alternate form ('#').
- bool localized : 1;
- detail::fill_t<Char> fill;
-
- constexpr basic_format_specs()
- : width(0),
- precision(-1),
- type(presentation_type::none),
- align(align::none),
- sign(sign::none),
- alt(false),
- localized(false) {}
-};
-
-using format_specs = basic_format_specs<char>;
-
-FMT_BEGIN_DETAIL_NAMESPACE
-
-enum class arg_id_kind { none, index, name };
-
-// An argument reference.
-template <typename Char> struct arg_ref {
- FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {}
-
- FMT_CONSTEXPR explicit arg_ref(int index)
- : kind(arg_id_kind::index), val(index) {}
- FMT_CONSTEXPR explicit arg_ref(basic_string_view<Char> name)
- : kind(arg_id_kind::name), val(name) {}
-
- FMT_CONSTEXPR auto operator=(int idx) -> arg_ref& {
- kind = arg_id_kind::index;
- val.index = idx;
- return *this;
- }
-
- arg_id_kind kind;
- union value {
- FMT_CONSTEXPR value(int id = 0) : index{id} {}
- FMT_CONSTEXPR value(basic_string_view<Char> n) : name(n) {}
-
- int index;
- basic_string_view<Char> name;
- } val;
-};
-
-// Format specifiers with width and precision resolved at formatting rather
-// than parsing time to allow re-using the same parsed specifiers with
-// different sets of arguments (precompilation of format strings).
-template <typename Char>
-struct dynamic_format_specs : basic_format_specs<Char> {
- arg_ref<Char> width_ref;
- arg_ref<Char> precision_ref;
-};
-
-struct auto_id {};
-
-// A format specifier handler that sets fields in basic_format_specs.
-template <typename Char> class specs_setter {
- protected:
- basic_format_specs<Char>& specs_;
-
- public:
- explicit FMT_CONSTEXPR specs_setter(basic_format_specs<Char>& specs)
- : specs_(specs) {}
-
- FMT_CONSTEXPR specs_setter(const specs_setter& other)
- : specs_(other.specs_) {}
-
- FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; }
- FMT_CONSTEXPR void on_fill(basic_string_view<Char> fill) {
- specs_.fill = fill;
- }
- FMT_CONSTEXPR void on_sign(sign_t s) { specs_.sign = s; }
- FMT_CONSTEXPR void on_hash() { specs_.alt = true; }
- FMT_CONSTEXPR void on_localized() { specs_.localized = true; }
-
- FMT_CONSTEXPR void on_zero() {
- if (specs_.align == align::none) specs_.align = align::numeric;
- specs_.fill[0] = Char('0');
- }
-
- FMT_CONSTEXPR void on_width(int width) { specs_.width = width; }
- FMT_CONSTEXPR void on_precision(int precision) {
- specs_.precision = precision;
- }
- FMT_CONSTEXPR void end_precision() {}
-
- FMT_CONSTEXPR void on_type(presentation_type type) { specs_.type = type; }
-};
-
-// Format spec handler that saves references to arguments representing dynamic
-// width and precision to be resolved at formatting time.
-template <typename ParseContext>
-class dynamic_specs_handler
- : public specs_setter<typename ParseContext::char_type> {
- public:
- using char_type = typename ParseContext::char_type;
-
- FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs<char_type>& specs,
- ParseContext& ctx)
- : specs_setter<char_type>(specs), specs_(specs), context_(ctx) {}
-
- FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other)
- : specs_setter<char_type>(other),
- specs_(other.specs_),
- context_(other.context_) {}
-
- template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
- specs_.width_ref = make_arg_ref(arg_id);
- }
-
- template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
- specs_.precision_ref = make_arg_ref(arg_id);
- }
-
- FMT_CONSTEXPR void on_error(const char* message) {
- context_.on_error(message);
- }
-
- private:
- dynamic_format_specs<char_type>& specs_;
- ParseContext& context_;
-
- using arg_ref_type = arg_ref<char_type>;
-
- FMT_CONSTEXPR auto make_arg_ref(int arg_id) -> arg_ref_type {
- context_.check_arg_id(arg_id);
- context_.check_dynamic_spec(arg_id);
- return arg_ref_type(arg_id);
- }
-
- FMT_CONSTEXPR auto make_arg_ref(auto_id) -> arg_ref_type {
- int arg_id = context_.next_arg_id();
- context_.check_dynamic_spec(arg_id);
- return arg_ref_type(arg_id);
- }
-
- FMT_CONSTEXPR auto make_arg_ref(basic_string_view<char_type> arg_id)
- -> arg_ref_type {
- context_.check_arg_id(arg_id);
- basic_string_view<char_type> format_str(
- context_.begin(), to_unsigned(context_.end() - context_.begin()));
- return arg_ref_type(arg_id);
- }
-};
-
-template <typename Char> constexpr bool is_ascii_letter(Char c) {
- return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
-}
-
-// Converts a character to ASCII. Returns a number > 127 on conversion failure.
-template <typename Char, FMT_ENABLE_IF(std::is_integral<Char>::value)>
-constexpr auto to_ascii(Char c) -> Char {
- return c;
-}
-template <typename Char, FMT_ENABLE_IF(std::is_enum<Char>::value)>
-constexpr auto to_ascii(Char c) -> underlying_t<Char> {
- return c;
-}
-
-FMT_CONSTEXPR inline auto code_point_length_impl(char c) -> int {
- return "\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0\0\0\2\2\2\2\3\3\4"
- [static_cast<unsigned char>(c) >> 3];
-}
-
-template <typename Char>
-FMT_CONSTEXPR auto code_point_length(const Char* begin) -> int {
- if (const_check(sizeof(Char) != 1)) return 1;
- int len = code_point_length_impl(static_cast<char>(*begin));
-
- // Compute the pointer to the next character early so that the next
- // iteration can start working on the next character. Neither Clang
- // nor GCC figure out this reordering on their own.
- return len + !len;
-}
-
-// Return the result via the out param to workaround gcc bug 77539.
-template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*>
-FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool {
- for (out = first; out != last; ++out) {
- if (*out == value) return true;
- }
- return false;
-}
-
-template <>
-inline auto find<false, char>(const char* first, const char* last, char value,
- const char*& out) -> bool {
- out = static_cast<const char*>(
- std::memchr(first, value, to_unsigned(last - first)));
- return out != nullptr;
-}
-
-// Parses the range [begin, end) as an unsigned integer. This function assumes
-// that the range is non-empty and the first character is a digit.
-template <typename Char>
-FMT_CONSTEXPR auto parse_nonnegative_int(const Char*& begin, const Char* end,
- int error_value) noexcept -> int {
- FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', "");
- unsigned value = 0, prev = 0;
- auto p = begin;
- do {
- prev = value;
- value = value * 10 + unsigned(*p - '0');
- ++p;
- } while (p != end && '0' <= *p && *p <= '9');
- auto num_digits = p - begin;
- begin = p;
- if (num_digits <= std::numeric_limits<int>::digits10)
- return static_cast<int>(value);
- // Check for overflow.
- const unsigned max = to_unsigned((std::numeric_limits<int>::max)());
- return num_digits == std::numeric_limits<int>::digits10 + 1 &&
- prev * 10ull + unsigned(p[-1] - '0') <= max
- ? static_cast<int>(value)
- : error_value;
-}
-
-// Parses fill and alignment.
-template <typename Char, typename Handler>
-FMT_CONSTEXPR auto parse_align(const Char* begin, const Char* end,
- Handler&& handler) -> const Char* {
- FMT_ASSERT(begin != end, "");
- auto align = align::none;
- auto p = begin + code_point_length(begin);
- if (end - p <= 0) p = begin;
- for (;;) {
- switch (to_ascii(*p)) {
- case '<':
- align = align::left;
- break;
- case '>':
- align = align::right;
- break;
- case '^':
- align = align::center;
- break;
- default:
- break;
- }
- if (align != align::none) {
- if (p != begin) {
- auto c = *begin;
- if (c == '{')
- return handler.on_error("invalid fill character '{'"), begin;
- handler.on_fill(basic_string_view<Char>(begin, to_unsigned(p - begin)));
- begin = p + 1;
- } else
- ++begin;
- handler.on_align(align);
- break;
- } else if (p == begin) {
- break;
- }
- p = begin;
- }
- return begin;
-}
-
-template <typename Char> FMT_CONSTEXPR bool is_name_start(Char c) {
- return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c;
-}
-
-template <typename Char, typename IDHandler>
-FMT_CONSTEXPR auto do_parse_arg_id(const Char* begin, const Char* end,
- IDHandler&& handler) -> const Char* {
- FMT_ASSERT(begin != end, "");
- Char c = *begin;
- if (c >= '0' && c <= '9') {
- int index = 0;
- if (c != '0')
- index =
- parse_nonnegative_int(begin, end, (std::numeric_limits<int>::max)());
- else
- ++begin;
- if (begin == end || (*begin != '}' && *begin != ':'))
- handler.on_error("invalid format string");
- else
- handler(index);
- return begin;
- }
- if (!is_name_start(c)) {
- handler.on_error("invalid format string");
- return begin;
- }
- auto it = begin;
- do {
- ++it;
- } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9')));
- handler(basic_string_view<Char>(begin, to_unsigned(it - begin)));
- return it;
-}
-
-template <typename Char, typename IDHandler>
-FMT_CONSTEXPR FMT_INLINE auto parse_arg_id(const Char* begin, const Char* end,
- IDHandler&& handler) -> const Char* {
- Char c = *begin;
- if (c != '}' && c != ':') return do_parse_arg_id(begin, end, handler);
- handler();
- return begin;
-}
-
-template <typename Char, typename Handler>
-FMT_CONSTEXPR auto parse_width(const Char* begin, const Char* end,
- Handler&& handler) -> const Char* {
- using detail::auto_id;
- struct width_adapter {
- Handler& handler;
-
- FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); }
- FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); }
- FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
- handler.on_dynamic_width(id);
- }
- FMT_CONSTEXPR void on_error(const char* message) {
- if (message) handler.on_error(message);
- }
- };
-
- FMT_ASSERT(begin != end, "");
- if ('0' <= *begin && *begin <= '9') {
- int width = parse_nonnegative_int(begin, end, -1);
- if (width != -1)
- handler.on_width(width);
- else
- handler.on_error("number is too big");
- } else if (*begin == '{') {
- ++begin;
- if (begin != end) begin = parse_arg_id(begin, end, width_adapter{handler});
- if (begin == end || *begin != '}')
- return handler.on_error("invalid format string"), begin;
- ++begin;
- }
- return begin;
-}
-
-template <typename Char, typename Handler>
-FMT_CONSTEXPR auto parse_precision(const Char* begin, const Char* end,
- Handler&& handler) -> const Char* {
- using detail::auto_id;
- struct precision_adapter {
- Handler& handler;
-
- FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); }
- FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); }
- FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
- handler.on_dynamic_precision(id);
- }
- FMT_CONSTEXPR void on_error(const char* message) {
- if (message) handler.on_error(message);
- }
- };
-
- ++begin;
- auto c = begin != end ? *begin : Char();
- if ('0' <= c && c <= '9') {
- auto precision = parse_nonnegative_int(begin, end, -1);
- if (precision != -1)
- handler.on_precision(precision);
- else
- handler.on_error("number is too big");
- } else if (c == '{') {
- ++begin;
- if (begin != end)
- begin = parse_arg_id(begin, end, precision_adapter{handler});
- if (begin == end || *begin++ != '}')
- return handler.on_error("invalid format string"), begin;
- } else {
- return handler.on_error("missing precision specifier"), begin;
- }
- handler.end_precision();
- return begin;
-}
-
-template <typename Char>
-FMT_CONSTEXPR auto parse_presentation_type(Char type) -> presentation_type {
- switch (to_ascii(type)) {
- case 'd':
- return presentation_type::dec;
- case 'o':
- return presentation_type::oct;
- case 'x':
- return presentation_type::hex_lower;
- case 'X':
- return presentation_type::hex_upper;
- case 'b':
- return presentation_type::bin_lower;
- case 'B':
- return presentation_type::bin_upper;
- case 'a':
- return presentation_type::hexfloat_lower;
- case 'A':
- return presentation_type::hexfloat_upper;
- case 'e':
- return presentation_type::exp_lower;
- case 'E':
- return presentation_type::exp_upper;
- case 'f':
- return presentation_type::fixed_lower;
- case 'F':
- return presentation_type::fixed_upper;
- case 'g':
- return presentation_type::general_lower;
- case 'G':
- return presentation_type::general_upper;
- case 'c':
- return presentation_type::chr;
- case 's':
- return presentation_type::string;
- case 'p':
- return presentation_type::pointer;
- case '?':
- return presentation_type::debug;
- default:
- return presentation_type::none;
- }
-}
-
-// Parses standard format specifiers and sends notifications about parsed
-// components to handler.
-template <typename Char, typename SpecHandler>
-FMT_CONSTEXPR FMT_INLINE auto parse_format_specs(const Char* begin,
- const Char* end,
- SpecHandler&& handler)
- -> const Char* {
- if (1 < end - begin && begin[1] == '}' && is_ascii_letter(*begin) &&
- *begin != 'L') {
- presentation_type type = parse_presentation_type(*begin++);
- if (type == presentation_type::none)
- handler.on_error("invalid type specifier");
- handler.on_type(type);
- return begin;
- }
-
- if (begin == end) return begin;
-
- begin = parse_align(begin, end, handler);
- if (begin == end) return begin;
-
- // Parse sign.
- switch (to_ascii(*begin)) {
- case '+':
- handler.on_sign(sign::plus);
- ++begin;
- break;
- case '-':
- handler.on_sign(sign::minus);
- ++begin;
- break;
- case ' ':
- handler.on_sign(sign::space);
- ++begin;
- break;
- default:
- break;
- }
- if (begin == end) return begin;
-
- if (*begin == '#') {
- handler.on_hash();
- if (++begin == end) return begin;
- }
-
- // Parse zero flag.
- if (*begin == '0') {
- handler.on_zero();
- if (++begin == end) return begin;
- }
-
- begin = parse_width(begin, end, handler);
- if (begin == end) return begin;
-
- // Parse precision.
- if (*begin == '.') {
- begin = parse_precision(begin, end, handler);
- if (begin == end) return begin;
- }
-
- if (*begin == 'L') {
- handler.on_localized();
- ++begin;
- }
-
- // Parse type.
- if (begin != end && *begin != '}') {
- presentation_type type = parse_presentation_type(*begin++);
- if (type == presentation_type::none)
- handler.on_error("invalid type specifier");
- handler.on_type(type);
- }
- return begin;
-}
-
-template <typename Char, typename Handler>
-FMT_CONSTEXPR auto parse_replacement_field(const Char* begin, const Char* end,
- Handler&& handler) -> const Char* {
- struct id_adapter {
- Handler& handler;
- int arg_id;
-
- FMT_CONSTEXPR void operator()() { arg_id = handler.on_arg_id(); }
- FMT_CONSTEXPR void operator()(int id) { arg_id = handler.on_arg_id(id); }
- FMT_CONSTEXPR void operator()(basic_string_view<Char> id) {
- arg_id = handler.on_arg_id(id);
- }
- FMT_CONSTEXPR void on_error(const char* message) {
- if (message) handler.on_error(message);
- }
- };
-
- ++begin;
- if (begin == end) return handler.on_error("invalid format string"), end;
- if (*begin == '}') {
- handler.on_replacement_field(handler.on_arg_id(), begin);
- } else if (*begin == '{') {
- handler.on_text(begin, begin + 1);
- } else {
- auto adapter = id_adapter{handler, 0};
- begin = parse_arg_id(begin, end, adapter);
- Char c = begin != end ? *begin : Char();
- if (c == '}') {
- handler.on_replacement_field(adapter.arg_id, begin);
- } else if (c == ':') {
- begin = handler.on_format_specs(adapter.arg_id, begin + 1, end);
- if (begin == end || *begin != '}')
- return handler.on_error("unknown format specifier"), end;
- } else {
- return handler.on_error("missing '}' in format string"), end;
- }
- }
- return begin + 1;
-}
-
-template <bool IS_CONSTEXPR, typename Char, typename Handler>
-FMT_CONSTEXPR FMT_INLINE void parse_format_string(
- basic_string_view<Char> format_str, Handler&& handler) {
- // Workaround a name-lookup bug in MSVC's modules implementation.
- using detail::find;
-
- auto begin = format_str.data();
- auto end = begin + format_str.size();
- if (end - begin < 32) {
- // Use a simple loop instead of memchr for small strings.
- const Char* p = begin;
- while (p != end) {
- auto c = *p++;
- if (c == '{') {
- handler.on_text(begin, p - 1);
- begin = p = parse_replacement_field(p - 1, end, handler);
- } else if (c == '}') {
- if (p == end || *p != '}')
- return handler.on_error("unmatched '}' in format string");
- handler.on_text(begin, p);
- begin = ++p;
- }
- }
- handler.on_text(begin, end);
- return;
- }
- struct pfs_writer {
- FMT_CONSTEXPR void operator()(const Char* from, const Char* to) {
- if (from == to) return;
- for (;;) {
- const Char* p = nullptr;
- if (!find<IS_CONSTEXPR>(from, to, Char('}'), p))
- return handler_.on_text(from, to);
- ++p;
- if (p == to || *p != '}')
- return handler_.on_error("unmatched '}' in format string");
- handler_.on_text(from, p);
- from = p + 1;
- }
- }
- Handler& handler_;
- } write = {handler};
- while (begin != end) {
- // Doing two passes with memchr (one for '{' and another for '}') is up to
- // 2.5x faster than the naive one-pass implementation on big format strings.
- const Char* p = begin;
- if (*begin != '{' && !find<IS_CONSTEXPR>(begin + 1, end, Char('{'), p))
- return write(begin, end);
- write(begin, p);
- begin = parse_replacement_field(p, end, handler);
- }
-}
-
-template <typename T, bool = is_named_arg<T>::value> struct strip_named_arg {
- using type = T;
-};
-template <typename T> struct strip_named_arg<T, true> {
- using type = remove_cvref_t<decltype(T::value)>;
-};
-
-template <typename T, typename ParseContext>
-FMT_CONSTEXPR auto parse_format_specs(ParseContext& ctx)
- -> decltype(ctx.begin()) {
- using char_type = typename ParseContext::char_type;
- using context = buffer_context<char_type>;
- using stripped_type = typename strip_named_arg<T>::type;
- using mapped_type = conditional_t<
- mapped_type_constant<T, context>::value != type::custom_type,
- decltype(arg_mapper<context>().map(std::declval<const T&>())),
- stripped_type>;
- auto f = conditional_t<has_formatter<mapped_type, context>::value,
- formatter<mapped_type, char_type>,
- fallback_formatter<stripped_type, char_type>>();
- return f.parse(ctx);
-}
-
-template <typename ErrorHandler>
-FMT_CONSTEXPR void check_int_type_spec(presentation_type type,
- ErrorHandler&& eh) {
- if (type > presentation_type::bin_upper && type != presentation_type::chr)
- eh.on_error("invalid type specifier");
-}
-
-// Checks char specs and returns true if the type spec is char (and not int).
-template <typename Char, typename ErrorHandler = error_handler>
-FMT_CONSTEXPR auto check_char_specs(const basic_format_specs<Char>& specs,
- ErrorHandler&& eh = {}) -> bool {
- if (specs.type != presentation_type::none &&
- specs.type != presentation_type::chr &&
- specs.type != presentation_type::debug) {
- check_int_type_spec(specs.type, eh);
- return false;
- }
- if (specs.align == align::numeric || specs.sign != sign::none || specs.alt)
- eh.on_error("invalid format specifier for char");
- return true;
-}
-
-// A floating-point presentation format.
-enum class float_format : unsigned char {
- general, // General: exponent notation or fixed point based on magnitude.
- exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3.
- fixed, // Fixed point with the default precision of 6, e.g. 0.0012.
- hex
-};
-
-struct float_specs {
- int precision;
- float_format format : 8;
- sign_t sign : 8;
- bool upper : 1;
- bool locale : 1;
- bool binary32 : 1;
- bool showpoint : 1;
-};
-
-template <typename ErrorHandler = error_handler, typename Char>
-FMT_CONSTEXPR auto parse_float_type_spec(const basic_format_specs<Char>& specs,
- ErrorHandler&& eh = {})
- -> float_specs {
- auto result = float_specs();
- result.showpoint = specs.alt;
- result.locale = specs.localized;
- switch (specs.type) {
- case presentation_type::none:
- result.format = float_format::general;
- break;
- case presentation_type::general_upper:
- result.upper = true;
- FMT_FALLTHROUGH;
- case presentation_type::general_lower:
- result.format = float_format::general;
- break;
- case presentation_type::exp_upper:
- result.upper = true;
- FMT_FALLTHROUGH;
- case presentation_type::exp_lower:
- result.format = float_format::exp;
- result.showpoint |= specs.precision != 0;
- break;
- case presentation_type::fixed_upper:
- result.upper = true;
- FMT_FALLTHROUGH;
- case presentation_type::fixed_lower:
- result.format = float_format::fixed;
- result.showpoint |= specs.precision != 0;
- break;
- case presentation_type::hexfloat_upper:
- result.upper = true;
- FMT_FALLTHROUGH;
- case presentation_type::hexfloat_lower:
- result.format = float_format::hex;
- break;
- default:
- eh.on_error("invalid type specifier");
- break;
- }
- return result;
-}
-
-template <typename ErrorHandler = error_handler>
-FMT_CONSTEXPR auto check_cstring_type_spec(presentation_type type,
- ErrorHandler&& eh = {}) -> bool {
- if (type == presentation_type::none || type == presentation_type::string ||
- type == presentation_type::debug)
- return true;
- if (type != presentation_type::pointer) eh.on_error("invalid type specifier");
- return false;
-}
-
-template <typename ErrorHandler = error_handler>
-FMT_CONSTEXPR void check_string_type_spec(presentation_type type,
- ErrorHandler&& eh = {}) {
- if (type != presentation_type::none && type != presentation_type::string &&
- type != presentation_type::debug)
- eh.on_error("invalid type specifier");
-}
-
-template <typename ErrorHandler>
-FMT_CONSTEXPR void check_pointer_type_spec(presentation_type type,
- ErrorHandler&& eh) {
- if (type != presentation_type::none && type != presentation_type::pointer)
- eh.on_error("invalid type specifier");
-}
-
-// A parse_format_specs handler that checks if specifiers are consistent with
-// the argument type.
-template <typename Handler> class specs_checker : public Handler {
- private:
- detail::type arg_type_;
-
- FMT_CONSTEXPR void require_numeric_argument() {
- if (!is_arithmetic_type(arg_type_))
- this->on_error("format specifier requires numeric argument");
- }
-
- public:
- FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type)
- : Handler(handler), arg_type_(arg_type) {}
-
- FMT_CONSTEXPR void on_align(align_t align) {
- if (align == align::numeric) require_numeric_argument();
- Handler::on_align(align);
- }
-
- FMT_CONSTEXPR void on_sign(sign_t s) {
- require_numeric_argument();
- if (is_integral_type(arg_type_) && arg_type_ != type::int_type &&
- arg_type_ != type::long_long_type && arg_type_ != type::int128_type &&
- arg_type_ != type::char_type) {
- this->on_error("format specifier requires signed argument");
- }
- Handler::on_sign(s);
- }
-
- FMT_CONSTEXPR void on_hash() {
- require_numeric_argument();
- Handler::on_hash();
- }
-
- FMT_CONSTEXPR void on_localized() {
- require_numeric_argument();
- Handler::on_localized();
- }
-
- FMT_CONSTEXPR void on_zero() {
- require_numeric_argument();
- Handler::on_zero();
- }
-
- FMT_CONSTEXPR void end_precision() {
- if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type)
- this->on_error("precision not allowed for this argument type");
- }
-};
-
-constexpr int invalid_arg_index = -1;
-
-#if FMT_USE_NONTYPE_TEMPLATE_ARGS
-template <int N, typename T, typename... Args, typename Char>
-constexpr auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
- if constexpr (detail::is_statically_named_arg<T>()) {
- if (name == T::name) return N;
- }
- if constexpr (sizeof...(Args) > 0)
- return get_arg_index_by_name<N + 1, Args...>(name);
- (void)name; // Workaround an MSVC bug about "unused" parameter.
- return invalid_arg_index;
-}
-#endif
-
-template <typename... Args, typename Char>
-FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
-#if FMT_USE_NONTYPE_TEMPLATE_ARGS
- if constexpr (sizeof...(Args) > 0)
- return get_arg_index_by_name<0, Args...>(name);
-#endif
- (void)name;
- return invalid_arg_index;
-}
-
-template <typename Char, typename ErrorHandler, typename... Args>
-class format_string_checker {
- private:
- // In the future basic_format_parse_context will replace compile_parse_context
- // here and will use is_constant_evaluated and downcasting to access the data
- // needed for compile-time checks: https://godbolt.org/z/GvWzcTjh1.
- using parse_context_type = compile_parse_context<Char, ErrorHandler>;
- static constexpr int num_args = sizeof...(Args);
-
- // Format specifier parsing function.
- using parse_func = const Char* (*)(parse_context_type&);
-
- parse_context_type context_;
- parse_func parse_funcs_[num_args > 0 ? static_cast<size_t>(num_args) : 1];
- type types_[num_args > 0 ? static_cast<size_t>(num_args) : 1];
-
- public:
- explicit FMT_CONSTEXPR format_string_checker(
- basic_string_view<Char> format_str, ErrorHandler eh)
- : context_(format_str, num_args, types_, eh),
- parse_funcs_{&parse_format_specs<Args, parse_context_type>...},
- types_{
- mapped_type_constant<Args,
- basic_format_context<Char*, Char>>::value...} {
- }
-
- FMT_CONSTEXPR void on_text(const Char*, const Char*) {}
-
- FMT_CONSTEXPR auto on_arg_id() -> int { return context_.next_arg_id(); }
- FMT_CONSTEXPR auto on_arg_id(int id) -> int {
- return context_.check_arg_id(id), id;
- }
- FMT_CONSTEXPR auto on_arg_id(basic_string_view<Char> id) -> int {
-#if FMT_USE_NONTYPE_TEMPLATE_ARGS
- auto index = get_arg_index_by_name<Args...>(id);
- if (index == invalid_arg_index) on_error("named argument is not found");
- return context_.check_arg_id(index), index;
-#else
- (void)id;
- on_error("compile-time checks for named arguments require C++20 support");
- return 0;
-#endif
- }
-
- FMT_CONSTEXPR void on_replacement_field(int, const Char*) {}
-
- FMT_CONSTEXPR auto on_format_specs(int id, const Char* begin, const Char*)
- -> const Char* {
- context_.advance_to(context_.begin() + (begin - &*context_.begin()));
- // id >= 0 check is a workaround for gcc 10 bug (#2065).
- return id >= 0 && id < num_args ? parse_funcs_[id](context_) : begin;
- }
-
- FMT_CONSTEXPR void on_error(const char* message) {
- context_.on_error(message);
- }
-};
-
-// Reports a compile-time error if S is not a valid format string.
-template <typename..., typename S, FMT_ENABLE_IF(!is_compile_string<S>::value)>
-FMT_INLINE void check_format_string(const S&) {
-#ifdef FMT_ENFORCE_COMPILE_STRING
- static_assert(is_compile_string<S>::value,
- "FMT_ENFORCE_COMPILE_STRING requires all format strings to use "
- "FMT_STRING.");
-#endif
-}
-template <typename... Args, typename S,
- FMT_ENABLE_IF(is_compile_string<S>::value)>
-void check_format_string(S format_str) {
- FMT_CONSTEXPR auto s = basic_string_view<typename S::char_type>(format_str);
- using checker = format_string_checker<typename S::char_type, error_handler,
- remove_cvref_t<Args>...>;
- FMT_CONSTEXPR bool invalid_format =
- (parse_format_string<true>(s, checker(s, {})), true);
- ignore_unused(invalid_format);
-}
-
-template <typename Char>
-void vformat_to(
- buffer<Char>& buf, basic_string_view<Char> fmt,
- basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args,
- locale_ref loc = {});
-
-FMT_API void vprint_mojibake(std::FILE*, string_view, format_args);
-#ifndef _WIN32
-inline void vprint_mojibake(std::FILE*, string_view, format_args) {}
-#endif
-FMT_END_DETAIL_NAMESPACE
-
-// A formatter specialization for the core types corresponding to detail::type
-// constants.
-template <typename T, typename Char>
-struct formatter<T, Char,
- enable_if_t<detail::type_constant<T, Char>::value !=
- detail::type::custom_type>> {
- private:
- detail::dynamic_format_specs<Char> specs_;
-
- public:
- // Parses format specifiers stopping either at the end of the range or at the
- // terminating '}'.
- template <typename ParseContext>
- FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- auto begin = ctx.begin(), end = ctx.end();
- if (begin == end) return begin;
- using handler_type = detail::dynamic_specs_handler<ParseContext>;
- auto type = detail::type_constant<T, Char>::value;
- auto checker =
- detail::specs_checker<handler_type>(handler_type(specs_, ctx), type);
- auto it = detail::parse_format_specs(begin, end, checker);
- auto eh = ctx.error_handler();
- switch (type) {
- case detail::type::none_type:
- FMT_ASSERT(false, "invalid argument type");
- break;
- case detail::type::bool_type:
- if (specs_.type == presentation_type::none ||
- specs_.type == presentation_type::string) {
- break;
- }
- FMT_FALLTHROUGH;
- case detail::type::int_type:
- case detail::type::uint_type:
- case detail::type::long_long_type:
- case detail::type::ulong_long_type:
- case detail::type::int128_type:
- case detail::type::uint128_type:
- detail::check_int_type_spec(specs_.type, eh);
- break;
- case detail::type::char_type:
- detail::check_char_specs(specs_, eh);
- break;
- case detail::type::float_type:
- if (detail::const_check(FMT_USE_FLOAT))
- detail::parse_float_type_spec(specs_, eh);
- else
- FMT_ASSERT(false, "float support disabled");
- break;
- case detail::type::double_type:
- if (detail::const_check(FMT_USE_DOUBLE))
- detail::parse_float_type_spec(specs_, eh);
- else
- FMT_ASSERT(false, "double support disabled");
- break;
- case detail::type::long_double_type:
- if (detail::const_check(FMT_USE_LONG_DOUBLE))
- detail::parse_float_type_spec(specs_, eh);
- else
- FMT_ASSERT(false, "long double support disabled");
- break;
- case detail::type::cstring_type:
- detail::check_cstring_type_spec(specs_.type, eh);
- break;
- case detail::type::string_type:
- detail::check_string_type_spec(specs_.type, eh);
- break;
- case detail::type::pointer_type:
- detail::check_pointer_type_spec(specs_.type, eh);
- break;
- case detail::type::custom_type:
- // Custom format specifiers are checked in parse functions of
- // formatter specializations.
- break;
- }
- return it;
- }
-
- template <detail::type U = detail::type_constant<T, Char>::value,
- enable_if_t<(U == detail::type::string_type ||
- U == detail::type::cstring_type ||
- U == detail::type::char_type),
- int> = 0>
- FMT_CONSTEXPR void set_debug_format() {
- specs_.type = presentation_type::debug;
- }
-
- template <typename FormatContext>
- FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const
- -> decltype(ctx.out());
-};
-
-#define FMT_FORMAT_AS(Type, Base) \
- template <typename Char> \
- struct formatter<Type, Char> : formatter<Base, Char> { \
- template <typename FormatContext> \
- auto format(Type const& val, FormatContext& ctx) const \
- -> decltype(ctx.out()) { \
- return formatter<Base, Char>::format(static_cast<Base>(val), ctx); \
- } \
- }
-
-FMT_FORMAT_AS(signed char, int);
-FMT_FORMAT_AS(unsigned char, unsigned);
-FMT_FORMAT_AS(short, int);
-FMT_FORMAT_AS(unsigned short, unsigned);
-FMT_FORMAT_AS(long, long long);
-FMT_FORMAT_AS(unsigned long, unsigned long long);
-FMT_FORMAT_AS(Char*, const Char*);
-FMT_FORMAT_AS(std::basic_string<Char>, basic_string_view<Char>);
-FMT_FORMAT_AS(std::nullptr_t, const void*);
-FMT_FORMAT_AS(detail::std_string_view<Char>, basic_string_view<Char>);
-
-template <typename Char> struct basic_runtime { basic_string_view<Char> str; };
-
-/** A compile-time format string. */
-template <typename Char, typename... Args> class basic_format_string {
- private:
- basic_string_view<Char> str_;
-
- public:
- template <typename S,
- FMT_ENABLE_IF(
- std::is_convertible<const S&, basic_string_view<Char>>::value)>
- FMT_CONSTEVAL FMT_INLINE basic_format_string(const S& s) : str_(s) {
- static_assert(
- detail::count<
- (std::is_base_of<detail::view, remove_reference_t<Args>>::value &&
- std::is_reference<Args>::value)...>() == 0,
- "passing views as lvalues is disallowed");
-#ifdef FMT_HAS_CONSTEVAL
- if constexpr (detail::count_named_args<Args...>() ==
- detail::count_statically_named_args<Args...>()) {
- using checker = detail::format_string_checker<Char, detail::error_handler,
- remove_cvref_t<Args>...>;
- detail::parse_format_string<true>(str_, checker(s, {}));
- }
-#else
- detail::check_format_string<Args...>(s);
-#endif
- }
- basic_format_string(basic_runtime<Char> r) : str_(r.str) {}
-
- FMT_INLINE operator basic_string_view<Char>() const { return str_; }
-};
-
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
-// Workaround broken conversion on older gcc.
-template <typename...> using format_string = string_view;
-inline auto runtime(string_view s) -> string_view { return s; }
-#else
-template <typename... Args>
-using format_string = basic_format_string<char, type_identity_t<Args>...>;
-/**
- \rst
- Creates a runtime format string.
-
- **Example**::
-
- // Check format string at runtime instead of compile-time.
- fmt::print(fmt::runtime("{:d}"), "I am not a number");
- \endrst
- */
-inline auto runtime(string_view s) -> basic_runtime<char> { return {{s}}; }
-#endif
-
-FMT_API auto vformat(string_view fmt, format_args args) -> std::string;
-
-/**
- \rst
- Formats ``args`` according to specifications in ``fmt`` and returns the result
- as a string.
-
- **Example**::
-
- #include <fmt/core.h>
- std::string message = fmt::format("The answer is {}.", 42);
- \endrst
-*/
-template <typename... T>
-FMT_NODISCARD FMT_INLINE auto format(format_string<T...> fmt, T&&... args)
- -> std::string {
- return vformat(fmt, fmt::make_format_args(args...));
-}
-
-/** Formats a string and writes the output to ``out``. */
-template <typename OutputIt,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-auto vformat_to(OutputIt out, string_view fmt, format_args args) -> OutputIt {
- using detail::get_buffer;
- auto&& buf = get_buffer<char>(out);
- detail::vformat_to(buf, fmt, args, {});
- return detail::get_iterator(buf);
-}
-
-/**
- \rst
- Formats ``args`` according to specifications in ``fmt``, writes the result to
- the output iterator ``out`` and returns the iterator past the end of the output
- range. `format_to` does not append a terminating null character.
-
- **Example**::
-
- auto out = std::vector<char>();
- fmt::format_to(std::back_inserter(out), "{}", 42);
- \endrst
- */
-template <typename OutputIt, typename... T,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-FMT_INLINE auto format_to(OutputIt out, format_string<T...> fmt, T&&... args)
- -> OutputIt {
- return vformat_to(out, fmt, fmt::make_format_args(args...));
-}
-
-template <typename OutputIt> struct format_to_n_result {
- /** Iterator past the end of the output range. */
- OutputIt out;
- /** Total (not truncated) output size. */
- size_t size;
-};
-
-template <typename OutputIt, typename... T,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-auto vformat_to_n(OutputIt out, size_t n, string_view fmt, format_args args)
- -> format_to_n_result<OutputIt> {
- using traits = detail::fixed_buffer_traits;
- auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
- detail::vformat_to(buf, fmt, args, {});
- return {buf.out(), buf.count()};
-}
-
-/**
- \rst
- Formats ``args`` according to specifications in ``fmt``, writes up to ``n``
- characters of the result to the output iterator ``out`` and returns the total
- (not truncated) output size and the iterator past the end of the output range.
- `format_to_n` does not append a terminating null character.
- \endrst
- */
-template <typename OutputIt, typename... T,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-FMT_INLINE auto format_to_n(OutputIt out, size_t n, format_string<T...> fmt,
- T&&... args) -> format_to_n_result<OutputIt> {
- return vformat_to_n(out, n, fmt, fmt::make_format_args(args...));
-}
-
-/** Returns the number of chars in the output of ``format(fmt, args...)``. */
-template <typename... T>
-FMT_NODISCARD FMT_INLINE auto formatted_size(format_string<T...> fmt,
- T&&... args) -> size_t {
- auto buf = detail::counting_buffer<>();
- detail::vformat_to(buf, string_view(fmt), fmt::make_format_args(args...), {});
- return buf.count();
-}
-
-FMT_API void vprint(string_view fmt, format_args args);
-FMT_API void vprint(std::FILE* f, string_view fmt, format_args args);
-
-/**
- \rst
- Formats ``args`` according to specifications in ``fmt`` and writes the output
- to ``stdout``.
-
- **Example**::
-
- fmt::print("Elapsed time: {0:.2f} seconds", 1.23);
- \endrst
- */
-template <typename... T>
-FMT_INLINE void print(format_string<T...> fmt, T&&... args) {
- const auto& vargs = fmt::make_format_args(args...);
- return detail::is_utf8() ? vprint(fmt, vargs)
- : detail::vprint_mojibake(stdout, fmt, vargs);
-}
-
-/**
- \rst
- Formats ``args`` according to specifications in ``fmt`` and writes the
- output to the file ``f``.
-
- **Example**::
-
- fmt::print(stderr, "Don't {}!", "panic");
- \endrst
- */
-template <typename... T>
-FMT_INLINE void print(std::FILE* f, format_string<T...> fmt, T&&... args) {
- const auto& vargs = fmt::make_format_args(args...);
- return detail::is_utf8() ? vprint(f, fmt, vargs)
- : detail::vprint_mojibake(f, fmt, vargs);
-}
-
-FMT_MODULE_EXPORT_END
-FMT_GCC_PRAGMA("GCC pop_options")
-FMT_END_NAMESPACE
-
-#ifdef FMT_HEADER_ONLY
-# include "format.h"
-#endif
-#endif // FMT_CORE_H_
+#include "format.h"
--- /dev/null
+module;
+
+// Put all implementation-provided headers into the global module fragment
+// to prevent attachment to this module.
+#ifndef FMT_IMPORT_STD
+# include <algorithm>
+# include <bitset>
+# include <chrono>
+# include <cmath>
+# include <complex>
+# include <cstddef>
+# include <cstdint>
+# include <cstdio>
+# include <cstdlib>
+# include <cstring>
+# include <ctime>
+# include <exception>
+# include <expected>
+# include <filesystem>
+# include <fstream>
+# include <functional>
+# include <iterator>
+# include <limits>
+# include <locale>
+# include <memory>
+# include <optional>
+# include <ostream>
+# include <source_location>
+# include <stdexcept>
+# include <string>
+# include <string_view>
+# include <system_error>
+# include <thread>
+# include <type_traits>
+# include <typeinfo>
+# include <utility>
+# include <variant>
+# include <vector>
+#else
+# include <limits.h>
+# include <stdint.h>
+# include <stdio.h>
+# include <time.h>
+#endif
+#include <cerrno>
+#include <climits>
+#include <version>
+
+#if __has_include(<cxxabi.h>)
+# include <cxxabi.h>
+#endif
+#if defined(_MSC_VER) || defined(__MINGW32__)
+# include <intrin.h>
+#endif
+#if defined __APPLE__ || defined(__FreeBSD__)
+# include <xlocale.h>
+#endif
+#if __has_include(<winapifamily.h>)
+# include <winapifamily.h>
+#endif
+#if (__has_include(<fcntl.h>) || defined(__APPLE__) || \
+ defined(__linux__)) && \
+ (!defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP))
+# include <fcntl.h>
+# include <sys/stat.h>
+# include <sys/types.h>
+# ifndef _WIN32
+# include <unistd.h>
+# else
+# include <io.h>
+# endif
+#endif
+#ifdef _WIN32
+# if defined(__GLIBCXX__)
+# include <ext/stdio_filebuf.h>
+# include <ext/stdio_sync_filebuf.h>
+# endif
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+#endif
+
+export module fmt;
+
+#ifdef FMT_IMPORT_STD
+import std;
+#endif
+
+#define FMT_EXPORT export
+#define FMT_BEGIN_EXPORT export {
+#define FMT_END_EXPORT }
+
+// If you define FMT_ATTACH_TO_GLOBAL_MODULE
+// - all declarations are detached from module 'fmt'
+// - the module behaves like a traditional static library, too
+// - all library symbols are mangled traditionally
+// - you can mix TUs with either importing or #including the {fmt} API
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
+extern "C++" {
+#endif
+
+#ifndef FMT_OS
+# define FMT_OS 1
+#endif
+
+// All library-provided declarations and definitions must be in the module
+// purview to be exported.
+#include "fmt/args.h"
+#include "fmt/chrono.h"
+#include "fmt/color.h"
+#include "fmt/compile.h"
+#include "fmt/format.h"
+#if FMT_OS
+# include "fmt/os.h"
+#endif
+#include "fmt/ostream.h"
+#include "fmt/printf.h"
+#include "fmt/ranges.h"
+#include "fmt/std.h"
+#include "fmt/xchar.h"
+
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
+}
+#endif
+
+// gcc doesn't yet implement private module fragments
+#if !FMT_GCC_VERSION
+module :private;
+#endif
+
+#if FMT_HAS_INCLUDE("format.cc")
+# include "format.cc"
+#endif
+#if FMT_OS && FMT_HAS_INCLUDE("os.cc")
+# include "os.cc"
+#endif
#ifndef FMT_FORMAT_INL_H_
#define FMT_FORMAT_INL_H_
-#include <algorithm>
-#include <cctype>
-#include <cerrno> // errno
-#include <climits>
-#include <cmath>
-#include <cstdarg>
-#include <cstring> // std::memmove
-#include <cwchar>
-#include <exception>
-
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
-# include <locale>
+#ifndef FMT_MODULE
+# include <algorithm>
+# include <cerrno> // errno
+# include <climits>
+# include <cmath>
+# include <exception>
+
+# if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
+# include <locale>
+# endif
#endif
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(FMT_USE_WRITE_CONSOLE)
# include <io.h> // _isatty
#endif
std::terminate();
}
-FMT_FUNC void throw_format_error(const char* message) {
- FMT_THROW(format_error(message));
-}
-
FMT_FUNC void format_error_code(detail::buffer<char>& out, int error_code,
string_view message) noexcept {
// Report error code making sure that the output fits into
++error_code_size;
}
error_code_size += detail::to_unsigned(detail::count_digits(abs_value));
- auto it = buffer_appender<char>(out);
+ auto it = appender(out);
if (message.size() <= inline_buffer_size - error_code_size)
- format_to(it, FMT_STRING("{}{}"), message, SEP);
- format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code);
+ fmt::format_to(it, FMT_STRING("{}{}"), message, SEP);
+ fmt::format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code);
FMT_ASSERT(out.size() <= inline_buffer_size, "");
}
}
// A wrapper around fwrite that throws on error.
-inline void fwrite_fully(const void* ptr, size_t size, size_t count,
- FILE* stream) {
- size_t written = std::fwrite(ptr, size, count, stream);
+inline void fwrite_fully(const void* ptr, size_t count, FILE* stream) {
+ size_t written = std::fwrite(ptr, 1, count, stream);
if (written < count)
FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
}
static_assert(std::is_same<Locale, std::locale>::value, "");
}
-template <typename Locale> Locale locale_ref::get() const {
+template <typename Locale> auto locale_ref::get() const -> Locale {
static_assert(std::is_same<Locale, std::locale>::value, "");
return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale();
}
auto thousands_sep = grouping.empty() ? Char() : facet.thousands_sep();
return {std::move(grouping), thousands_sep};
}
-template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref loc) {
+template <typename Char>
+FMT_FUNC auto decimal_point_impl(locale_ref loc) -> Char {
return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>())
.decimal_point();
}
return '.';
}
#endif
+
+FMT_FUNC auto write_loc(appender out, loc_value value,
+ const format_specs& specs, locale_ref loc) -> bool {
+#ifdef FMT_STATIC_THOUSANDS_SEPARATOR
+ value.visit(loc_writer<>{
+ out, specs, std::string(1, FMT_STATIC_THOUSANDS_SEPARATOR), "\3", "."});
+ return true;
+#else
+ auto locale = loc.get<std::locale>();
+ // We cannot use the num_put<char> facet because it may produce output in
+ // a wrong encoding.
+ using facet = format_facet<std::locale>;
+ if (std::has_facet<facet>(locale))
+ return std::use_facet<facet>(locale).put(out, value, specs);
+ return facet(locale).put(out, value, specs);
+#endif
+}
} // namespace detail
-#if !FMT_MSC_VERSION
-FMT_API FMT_FUNC format_error::~format_error() noexcept = default;
+FMT_FUNC void report_error(const char* message) {
+ FMT_THROW(format_error(message));
+}
+
+template <typename Locale> typename Locale::id format_facet<Locale>::id;
+
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+template <typename Locale> format_facet<Locale>::format_facet(Locale& loc) {
+ auto& numpunct = std::use_facet<std::numpunct<char>>(loc);
+ grouping_ = numpunct.grouping();
+ if (!grouping_.empty()) separator_ = std::string(1, numpunct.thousands_sep());
+}
+
+template <>
+FMT_API FMT_FUNC auto format_facet<std::locale>::do_put(
+ appender out, loc_value val, const format_specs& specs) const -> bool {
+ return val.visit(
+ detail::loc_writer<>{out, specs, separator_, grouping_, decimal_point_});
+}
#endif
-FMT_FUNC std::system_error vsystem_error(int error_code, string_view format_str,
- format_args args) {
+FMT_FUNC auto vsystem_error(int error_code, string_view fmt, format_args args)
+ -> std::system_error {
auto ec = std::error_code(error_code, std::generic_category());
- return std::system_error(ec, vformat(format_str, args));
+ return std::system_error(ec, vformat(fmt, args));
}
namespace detail {
-template <typename F> inline bool operator==(basic_fp<F> x, basic_fp<F> y) {
+template <typename F>
+inline auto operator==(basic_fp<F> x, basic_fp<F> y) -> bool {
return x.f == y.f && x.e == y.e;
}
// Compilers should be able to optimize this into the ror instruction.
-FMT_CONSTEXPR inline uint32_t rotr(uint32_t n, uint32_t r) noexcept {
+FMT_CONSTEXPR inline auto rotr(uint32_t n, uint32_t r) noexcept -> uint32_t {
r &= 31;
return (n >> r) | (n << (32 - r));
}
-FMT_CONSTEXPR inline uint64_t rotr(uint64_t n, uint32_t r) noexcept {
+FMT_CONSTEXPR inline auto rotr(uint64_t n, uint32_t r) noexcept -> uint64_t {
r &= 63;
return (n >> r) | (n << (64 - r));
}
-// Computes 128-bit result of multiplication of two 64-bit unsigned integers.
-inline uint128_fallback umul128(uint64_t x, uint64_t y) noexcept {
-#if FMT_USE_INT128
- auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y);
- return {static_cast<uint64_t>(p >> 64), static_cast<uint64_t>(p)};
-#elif defined(_MSC_VER) && defined(_M_X64)
- auto result = uint128_fallback();
- result.lo_ = _umul128(x, y, &result.hi_);
- return result;
-#else
- const uint64_t mask = static_cast<uint64_t>(max_value<uint32_t>());
-
- uint64_t a = x >> 32;
- uint64_t b = x & mask;
- uint64_t c = y >> 32;
- uint64_t d = y & mask;
-
- uint64_t ac = a * c;
- uint64_t bc = b * c;
- uint64_t ad = a * d;
- uint64_t bd = b * d;
-
- uint64_t intermediate = (bd >> 32) + (ad & mask) + (bc & mask);
-
- return {ac + (intermediate >> 32) + (ad >> 32) + (bc >> 32),
- (intermediate << 32) + (bd & mask)};
-#endif
-}
-
// Implementation of Dragonbox algorithm: https://github.com/jk-jeon/dragonbox.
namespace dragonbox {
-// Computes upper 64 bits of multiplication of two 64-bit unsigned integers.
-inline uint64_t umul128_upper64(uint64_t x, uint64_t y) noexcept {
-#if FMT_USE_INT128
- auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y);
- return static_cast<uint64_t>(p >> 64);
-#elif defined(_MSC_VER) && defined(_M_X64)
- return __umulh(x, y);
-#else
- return umul128(x, y).high();
-#endif
-}
-
-// Computes upper 128 bits of multiplication of a 64-bit unsigned integer and a
-// 128-bit unsigned integer.
-inline uint128_fallback umul192_upper128(uint64_t x,
- uint128_fallback y) noexcept {
- uint128_fallback r = umul128(x, y.high());
- r += umul128_upper64(x, y.low());
- return r;
-}
-
// Computes upper 64 bits of multiplication of a 32-bit unsigned integer and a
// 64-bit unsigned integer.
-inline uint64_t umul96_upper64(uint32_t x, uint64_t y) noexcept {
+inline auto umul96_upper64(uint32_t x, uint64_t y) noexcept -> uint64_t {
return umul128_upper64(static_cast<uint64_t>(x) << 32, y);
}
// Computes lower 128 bits of multiplication of a 64-bit unsigned integer and a
// 128-bit unsigned integer.
-inline uint128_fallback umul192_lower128(uint64_t x,
- uint128_fallback y) noexcept {
+inline auto umul192_lower128(uint64_t x, uint128_fallback y) noexcept
+ -> uint128_fallback {
uint64_t high = x * y.high();
uint128_fallback high_low = umul128(x, y.low());
return {high + high_low.high(), high_low.low()};
// Computes lower 64 bits of multiplication of a 32-bit unsigned integer and a
// 64-bit unsigned integer.
-inline uint64_t umul96_lower64(uint32_t x, uint64_t y) noexcept {
+inline auto umul96_lower64(uint32_t x, uint64_t y) noexcept -> uint64_t {
return x * y;
}
-// Computes floor(log10(pow(2, e))) for e in [-2620, 2620] using the method from
-// https://fmt.dev/papers/Dragonbox.pdf#page=28, section 6.1.
-inline int floor_log10_pow2(int e) noexcept {
- FMT_ASSERT(e <= 2620 && e >= -2620, "too large exponent");
- static_assert((-1 >> 1) == -1, "right shift is not arithmetic");
- return (e * 315653) >> 20;
-}
-
// Various fast log computations.
-inline int floor_log2_pow10(int e) noexcept {
- FMT_ASSERT(e <= 1233 && e >= -1233, "too large exponent");
- return (e * 1741647) >> 19;
-}
-inline int floor_log10_pow2_minus_log10_4_over_3(int e) noexcept {
+inline auto floor_log10_pow2_minus_log10_4_over_3(int e) noexcept -> int {
FMT_ASSERT(e <= 2936 && e >= -2985, "too large exponent");
return (e * 631305 - 261663) >> 21;
}
-static constexpr struct {
+FMT_INLINE_VARIABLE constexpr struct {
uint32_t divisor;
int shift_amount;
} div_small_pow10_infos[] = {{10, 16}, {100, 16}};
// divisible by pow(10, N).
// Precondition: n <= pow(10, N + 1).
template <int N>
-bool check_divisibility_and_divide_by_pow10(uint32_t& n) noexcept {
+auto check_divisibility_and_divide_by_pow10(uint32_t& n) noexcept -> bool {
// The numbers below are chosen such that:
// 1. floor(n/d) = floor(nm / 2^k) where d=10 or d=100,
// 2. nm mod 2^k < m if and only if n is divisible by d,
// Computes floor(n / pow(10, N)) for small n and N.
// Precondition: n <= pow(10, N + 1).
-template <int N> uint32_t small_division_by_pow10(uint32_t n) noexcept {
+template <int N> auto small_division_by_pow10(uint32_t n) noexcept -> uint32_t {
constexpr auto info = div_small_pow10_infos[N - 1];
FMT_ASSERT(n <= info.divisor * 10, "n is too large");
constexpr uint32_t magic_number =
}
// Computes floor(n / 10^(kappa + 1)) (float)
-inline uint32_t divide_by_10_to_kappa_plus_1(uint32_t n) noexcept {
+inline auto divide_by_10_to_kappa_plus_1(uint32_t n) noexcept -> uint32_t {
// 1374389535 = ceil(2^37/100)
return static_cast<uint32_t>((static_cast<uint64_t>(n) * 1374389535) >> 37);
}
// Computes floor(n / 10^(kappa + 1)) (double)
-inline uint64_t divide_by_10_to_kappa_plus_1(uint64_t n) noexcept {
+inline auto divide_by_10_to_kappa_plus_1(uint64_t n) noexcept -> uint64_t {
// 2361183241434822607 = ceil(2^(64+7)/1000)
return umul128_upper64(n, 2361183241434822607ull) >> 7;
}
// Various subroutines using pow10 cache
-template <class T> struct cache_accessor;
+template <typename T> struct cache_accessor;
template <> struct cache_accessor<float> {
using carrier_uint = float_info<float>::carrier_uint;
using cache_entry_type = uint64_t;
- static uint64_t get_cached_power(int k) noexcept {
+ static auto get_cached_power(int k) noexcept -> uint64_t {
FMT_ASSERT(k >= float_info<float>::min_k && k <= float_info<float>::max_k,
"k is out of range");
static constexpr const uint64_t pow10_significands[] = {
bool is_integer;
};
- static compute_mul_result compute_mul(
- carrier_uint u, const cache_entry_type& cache) noexcept {
+ static auto compute_mul(carrier_uint u,
+ const cache_entry_type& cache) noexcept
+ -> compute_mul_result {
auto r = umul96_upper64(u, cache);
return {static_cast<carrier_uint>(r >> 32),
static_cast<carrier_uint>(r) == 0};
}
- static uint32_t compute_delta(const cache_entry_type& cache,
- int beta) noexcept {
+ static auto compute_delta(const cache_entry_type& cache, int beta) noexcept
+ -> uint32_t {
return static_cast<uint32_t>(cache >> (64 - 1 - beta));
}
- static compute_mul_parity_result compute_mul_parity(
- carrier_uint two_f, const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_mul_parity(carrier_uint two_f,
+ const cache_entry_type& cache,
+ int beta) noexcept
+ -> compute_mul_parity_result {
FMT_ASSERT(beta >= 1, "");
FMT_ASSERT(beta < 64, "");
static_cast<uint32_t>(r >> (32 - beta)) == 0};
}
- static carrier_uint compute_left_endpoint_for_shorter_interval_case(
- const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_left_endpoint_for_shorter_interval_case(
+ const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return static_cast<carrier_uint>(
(cache - (cache >> (num_significand_bits<float>() + 2))) >>
(64 - num_significand_bits<float>() - 1 - beta));
}
- static carrier_uint compute_right_endpoint_for_shorter_interval_case(
- const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_right_endpoint_for_shorter_interval_case(
+ const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return static_cast<carrier_uint>(
(cache + (cache >> (num_significand_bits<float>() + 1))) >>
(64 - num_significand_bits<float>() - 1 - beta));
}
- static carrier_uint compute_round_up_for_shorter_interval_case(
- const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_round_up_for_shorter_interval_case(
+ const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return (static_cast<carrier_uint>(
cache >> (64 - num_significand_bits<float>() - 2 - beta)) +
1) /
using carrier_uint = float_info<double>::carrier_uint;
using cache_entry_type = uint128_fallback;
- static uint128_fallback get_cached_power(int k) noexcept {
+ static auto get_cached_power(int k) noexcept -> uint128_fallback {
FMT_ASSERT(k >= float_info<double>::min_k && k <= float_info<double>::max_k,
"k is out of range");
{0xfcf62c1dee382c42, 0x46729e03dd9ed7b6},
{0x9e19db92b4e31ba9, 0x6c07a2c26a8346d2},
{0xc5a05277621be293, 0xc7098b7305241886},
- { 0xf70867153aa2db38,
- 0xb8cbee4fc66d1ea8 }
+ {0xf70867153aa2db38, 0xb8cbee4fc66d1ea8},
+ {0x9a65406d44a5c903, 0x737f74f1dc043329},
+ {0xc0fe908895cf3b44, 0x505f522e53053ff3},
+ {0xf13e34aabb430a15, 0x647726b9e7c68ff0},
+ {0x96c6e0eab509e64d, 0x5eca783430dc19f6},
+ {0xbc789925624c5fe0, 0xb67d16413d132073},
+ {0xeb96bf6ebadf77d8, 0xe41c5bd18c57e890},
+ {0x933e37a534cbaae7, 0x8e91b962f7b6f15a},
+ {0xb80dc58e81fe95a1, 0x723627bbb5a4adb1},
+ {0xe61136f2227e3b09, 0xcec3b1aaa30dd91d},
+ {0x8fcac257558ee4e6, 0x213a4f0aa5e8a7b2},
+ {0xb3bd72ed2af29e1f, 0xa988e2cd4f62d19e},
+ {0xe0accfa875af45a7, 0x93eb1b80a33b8606},
+ {0x8c6c01c9498d8b88, 0xbc72f130660533c4},
+ {0xaf87023b9bf0ee6a, 0xeb8fad7c7f8680b5},
+ {0xdb68c2ca82ed2a05, 0xa67398db9f6820e2},
#else
{0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b},
{0xce5d73ff402d98e3, 0xfb0a3d212dc81290},
{0x8da471a9de737e24, 0x5ceaecfed289e5d3},
{0xe4d5e82392a40515, 0x0fabaf3feaa5334b},
{0xb8da1662e7b00a17, 0x3d6a751f3b936244},
- { 0x95527a5202df0ccb,
- 0x0f37801e0c43ebc9 }
+ {0x95527a5202df0ccb, 0x0f37801e0c43ebc9},
+ {0xf13e34aabb430a15, 0x647726b9e7c68ff0}
#endif
};
bool is_integer;
};
- static compute_mul_result compute_mul(
- carrier_uint u, const cache_entry_type& cache) noexcept {
+ static auto compute_mul(carrier_uint u,
+ const cache_entry_type& cache) noexcept
+ -> compute_mul_result {
auto r = umul192_upper128(u, cache);
return {r.high(), r.low() == 0};
}
- static uint32_t compute_delta(cache_entry_type const& cache,
- int beta) noexcept {
+ static auto compute_delta(cache_entry_type const& cache, int beta) noexcept
+ -> uint32_t {
return static_cast<uint32_t>(cache.high() >> (64 - 1 - beta));
}
- static compute_mul_parity_result compute_mul_parity(
- carrier_uint two_f, const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_mul_parity(carrier_uint two_f,
+ const cache_entry_type& cache,
+ int beta) noexcept
+ -> compute_mul_parity_result {
FMT_ASSERT(beta >= 1, "");
FMT_ASSERT(beta < 64, "");
((r.high() << beta) | (r.low() >> (64 - beta))) == 0};
}
- static carrier_uint compute_left_endpoint_for_shorter_interval_case(
- const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_left_endpoint_for_shorter_interval_case(
+ const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return (cache.high() -
(cache.high() >> (num_significand_bits<double>() + 2))) >>
(64 - num_significand_bits<double>() - 1 - beta);
}
- static carrier_uint compute_right_endpoint_for_shorter_interval_case(
- const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_right_endpoint_for_shorter_interval_case(
+ const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return (cache.high() +
(cache.high() >> (num_significand_bits<double>() + 1))) >>
(64 - num_significand_bits<double>() - 1 - beta);
}
- static carrier_uint compute_round_up_for_shorter_interval_case(
- const cache_entry_type& cache, int beta) noexcept {
+ static auto compute_round_up_for_shorter_interval_case(
+ const cache_entry_type& cache, int beta) noexcept -> carrier_uint {
return ((cache.high() >> (64 - num_significand_bits<double>() - 2 - beta)) +
1) /
2;
}
};
+FMT_FUNC auto get_cached_power(int k) noexcept -> uint128_fallback {
+ return cache_accessor<double>::get_cached_power(k);
+}
+
// Various integer checks
-template <class T>
-bool is_left_endpoint_integer_shorter_interval(int exponent) noexcept {
+template <typename T>
+auto is_left_endpoint_integer_shorter_interval(int exponent) noexcept -> bool {
const int case_shorter_interval_left_endpoint_lower_threshold = 2;
const int case_shorter_interval_left_endpoint_upper_threshold = 3;
return exponent >= case_shorter_interval_left_endpoint_lower_threshold &&
}
// Remove trailing zeros from n and return the number of zeros removed (float)
-FMT_INLINE int remove_trailing_zeros(uint32_t& n) noexcept {
+FMT_INLINE int remove_trailing_zeros(uint32_t& n, int s = 0) noexcept {
FMT_ASSERT(n != 0, "");
- const uint32_t mod_inv_5 = 0xcccccccd;
- const uint32_t mod_inv_25 = mod_inv_5 * mod_inv_5;
+ // Modular inverse of 5 (mod 2^32): (mod_inv_5 * 5) mod 2^32 = 1.
+ constexpr uint32_t mod_inv_5 = 0xcccccccd;
+ constexpr uint32_t mod_inv_25 = 0xc28f5c29; // = mod_inv_5 * mod_inv_5
- int s = 0;
while (true) {
auto q = rotr(n * mod_inv_25, 2);
if (q > max_value<uint32_t>() / 100) break;
n = q;
s |= 1;
}
-
return s;
}
// Is n is divisible by 10^8?
if ((nm.high() & ((1ull << (90 - 64)) - 1)) == 0 && nm.low() < magic_number) {
- // If yes, work with the quotient.
+ // If yes, work with the quotient...
auto n32 = static_cast<uint32_t>(nm.high() >> (90 - 64));
-
- const uint32_t mod_inv_5 = 0xcccccccd;
- const uint32_t mod_inv_25 = mod_inv_5 * mod_inv_5;
-
- int s = 8;
- while (true) {
- auto q = rotr(n32 * mod_inv_25, 2);
- if (q > max_value<uint32_t>() / 100) break;
- n32 = q;
- s += 2;
- }
- auto q = rotr(n32 * mod_inv_5, 1);
- if (q <= max_value<uint32_t>() / 10) {
- n32 = q;
- s |= 1;
- }
-
+ // ... and use the 32 bit variant of the function
+ int s = remove_trailing_zeros(n32, 8);
n = n32;
return s;
}
// If n is not divisible by 10^8, work with n itself.
- const uint64_t mod_inv_5 = 0xcccccccccccccccd;
- const uint64_t mod_inv_25 = mod_inv_5 * mod_inv_5;
+ constexpr uint64_t mod_inv_5 = 0xcccccccccccccccd;
+ constexpr uint64_t mod_inv_25 = 0x8f5c28f5c28f5c29; // mod_inv_5 * mod_inv_5
int s = 0;
while (true) {
}
// The main algorithm for shorter interval case
-template <class T>
+template <typename T>
FMT_INLINE decimal_fp<T> shorter_interval_case(int exponent) noexcept {
decimal_fp<T> ret_value;
// Compute k and beta
return ret_value;
}
-template <typename T> decimal_fp<T> to_decimal(T x) noexcept {
+template <typename T> auto to_decimal(T x) noexcept -> decimal_fp<T> {
// Step 1: integer promotion & Schubfach multiplier calculation.
using carrier_uint = typename float_info<T>::carrier_uint;
return ret_value;
}
} // namespace dragonbox
-
-#ifdef _MSC_VER
-FMT_FUNC auto fmt_snprintf(char* buf, size_t size, const char* fmt, ...)
- -> int {
- auto args = va_list();
- va_start(args, fmt);
- int result = vsnprintf_s(buf, size, _TRUNCATE, fmt, args);
- va_end(args);
- return result;
-}
-#endif
} // namespace detail
template <> struct formatter<detail::bigint> {
return ctx.begin();
}
- template <typename FormatContext>
- auto format(const detail::bigint& n, FormatContext& ctx) const ->
- typename FormatContext::iterator {
+ auto format(const detail::bigint& n, format_context& ctx) const
+ -> format_context::iterator {
auto out = ctx.out();
bool first = true;
for (auto i = n.bigits_.size(); i > 0; --i) {
auto value = n.bigits_[i - 1u];
if (first) {
- out = format_to(out, FMT_STRING("{:x}"), value);
+ out = fmt::format_to(out, FMT_STRING("{:x}"), value);
first = false;
continue;
}
- out = format_to(out, FMT_STRING("{:08x}"), value);
+ out = fmt::format_to(out, FMT_STRING("{:08x}"), value);
}
if (n.exp_ > 0)
- out = format_to(out, FMT_STRING("p{}"),
- n.exp_ * detail::bigint::bigit_bits);
+ out = fmt::format_to(out, FMT_STRING("p{}"),
+ n.exp_ * detail::bigint::bigit_bits);
return out;
}
};
const char* message) noexcept {
FMT_TRY {
auto ec = std::error_code(error_code, std::generic_category());
- write(std::back_inserter(out), std::system_error(ec, message).what());
+ detail::write(appender(out), std::system_error(ec, message).what());
return;
}
FMT_CATCH(...) {}
report_error(format_system_error, error_code, message);
}
-FMT_FUNC std::string vformat(string_view fmt, format_args args) {
+FMT_FUNC auto vformat(string_view fmt, format_args args) -> std::string {
// Don't optimize the "{}" case to keep the binary size small and because it
// can be better optimized in fmt::format anyway.
auto buffer = memory_buffer();
}
namespace detail {
-#ifdef _WIN32
+
+template <typename T> struct span {
+ T* data;
+ size_t size;
+};
+
+template <typename F> auto flockfile(F* f) -> decltype(_lock_file(f)) {
+ _lock_file(f);
+}
+template <typename F> auto funlockfile(F* f) -> decltype(_unlock_file(f)) {
+ _unlock_file(f);
+}
+
+#ifndef getc_unlocked
+template <typename F> auto getc_unlocked(F* f) -> decltype(_fgetc_nolock(f)) {
+ return _fgetc_nolock(f);
+}
+#endif
+
+template <typename F = FILE, typename Enable = void>
+struct has_flockfile : std::false_type {};
+
+template <typename F>
+struct has_flockfile<F, void_t<decltype(flockfile(&std::declval<F&>()))>>
+ : std::true_type {};
+
+// A FILE wrapper. F is FILE defined as a template parameter to make system API
+// detection work.
+template <typename F> class file_base {
+ public:
+ F* file_;
+
+ public:
+ file_base(F* file) : file_(file) {}
+ operator F*() const { return file_; }
+
+ // Reads a code unit from the stream.
+ auto get() -> int {
+ int result = getc_unlocked(file_);
+ if (result == EOF && ferror(file_) != 0)
+ FMT_THROW(system_error(errno, FMT_STRING("getc failed")));
+ return result;
+ }
+
+ // Puts the code unit back into the stream buffer.
+ void unget(char c) {
+ if (ungetc(c, file_) == EOF)
+ FMT_THROW(system_error(errno, FMT_STRING("ungetc failed")));
+ }
+
+ void flush() { fflush(this->file_); }
+};
+
+// A FILE wrapper for glibc.
+template <typename F> class glibc_file : public file_base<F> {
+ private:
+ enum {
+ line_buffered = 0x200, // _IO_LINE_BUF
+ unbuffered = 2 // _IO_UNBUFFERED
+ };
+
+ public:
+ using file_base<F>::file_base;
+
+ auto is_buffered() const -> bool {
+ return (this->file_->_flags & unbuffered) == 0;
+ }
+
+ void init_buffer() {
+ if (this->file_->_IO_write_ptr) return;
+ // Force buffer initialization by placing and removing a char in a buffer.
+ putc_unlocked(0, this->file_);
+ --this->file_->_IO_write_ptr;
+ }
+
+ // Returns the file's read buffer.
+ auto get_read_buffer() const -> span<const char> {
+ auto ptr = this->file_->_IO_read_ptr;
+ return {ptr, to_unsigned(this->file_->_IO_read_end - ptr)};
+ }
+
+ // Returns the file's write buffer.
+ auto get_write_buffer() const -> span<char> {
+ auto ptr = this->file_->_IO_write_ptr;
+ return {ptr, to_unsigned(this->file_->_IO_buf_end - ptr)};
+ }
+
+ void advance_write_buffer(size_t size) { this->file_->_IO_write_ptr += size; }
+
+ bool needs_flush() const {
+ if ((this->file_->_flags & line_buffered) == 0) return false;
+ char* end = this->file_->_IO_write_end;
+ return memchr(end, '\n', to_unsigned(this->file_->_IO_write_ptr - end));
+ }
+
+ void flush() { fflush_unlocked(this->file_); }
+};
+
+// A FILE wrapper for Apple's libc.
+template <typename F> class apple_file : public file_base<F> {
+ private:
+ enum {
+ line_buffered = 1, // __SNBF
+ unbuffered = 2 // __SLBF
+ };
+
+ public:
+ using file_base<F>::file_base;
+
+ auto is_buffered() const -> bool {
+ return (this->file_->_flags & unbuffered) == 0;
+ }
+
+ void init_buffer() {
+ if (this->file_->_p) return;
+ // Force buffer initialization by placing and removing a char in a buffer.
+ putc_unlocked(0, this->file_);
+ --this->file_->_p;
+ ++this->file_->_w;
+ }
+
+ auto get_read_buffer() const -> span<const char> {
+ return {reinterpret_cast<char*>(this->file_->_p),
+ to_unsigned(this->file_->_r)};
+ }
+
+ auto get_write_buffer() const -> span<char> {
+ return {reinterpret_cast<char*>(this->file_->_p),
+ to_unsigned(this->file_->_bf._base + this->file_->_bf._size -
+ this->file_->_p)};
+ }
+
+ void advance_write_buffer(size_t size) {
+ this->file_->_p += size;
+ this->file_->_w -= size;
+ }
+
+ bool needs_flush() const {
+ if ((this->file_->_flags & line_buffered) == 0) return false;
+ return memchr(this->file_->_p + this->file_->_w, '\n',
+ to_unsigned(-this->file_->_w));
+ }
+};
+
+// A fallback FILE wrapper.
+template <typename F> class fallback_file : public file_base<F> {
+ private:
+ char next_; // The next unconsumed character in the buffer.
+ bool has_next_ = false;
+
+ public:
+ using file_base<F>::file_base;
+
+ auto is_buffered() const -> bool { return false; }
+ auto needs_flush() const -> bool { return false; }
+ void init_buffer() {}
+
+ auto get_read_buffer() const -> span<const char> {
+ return {&next_, has_next_ ? 1u : 0u};
+ }
+
+ auto get_write_buffer() const -> span<char> { return {nullptr, 0}; }
+
+ void advance_write_buffer(size_t) {}
+
+ auto get() -> int {
+ has_next_ = false;
+ return file_base<F>::get();
+ }
+
+ void unget(char c) {
+ file_base<F>::unget(c);
+ next_ = c;
+ has_next_ = true;
+ }
+};
+
+#ifndef FMT_USE_FALLBACK_FILE
+# define FMT_USE_FALLBACK_FILE 1
+#endif
+
+template <typename F,
+ FMT_ENABLE_IF(sizeof(F::_p) != 0 && !FMT_USE_FALLBACK_FILE)>
+auto get_file(F* f, int) -> apple_file<F> {
+ return f;
+}
+template <typename F,
+ FMT_ENABLE_IF(sizeof(F::_IO_read_ptr) != 0 && !FMT_USE_FALLBACK_FILE)>
+inline auto get_file(F* f, int) -> glibc_file<F> {
+ return f;
+}
+
+inline auto get_file(FILE* f, ...) -> fallback_file<FILE> { return f; }
+
+using file_ref = decltype(get_file(static_cast<FILE*>(nullptr), 0));
+
+template <typename F = FILE, typename Enable = void>
+class file_print_buffer : public buffer<char> {
+ public:
+ explicit file_print_buffer(F*) : buffer(nullptr, size_t()) {}
+};
+
+template <typename F>
+class file_print_buffer<F, enable_if_t<has_flockfile<F>::value>>
+ : public buffer<char> {
+ private:
+ file_ref file_;
+
+ static void grow(buffer<char>& base, size_t) {
+ auto& self = static_cast<file_print_buffer&>(base);
+ self.file_.advance_write_buffer(self.size());
+ if (self.file_.get_write_buffer().size == 0) self.file_.flush();
+ auto buf = self.file_.get_write_buffer();
+ FMT_ASSERT(buf.size > 0, "");
+ self.set(buf.data, buf.size);
+ self.clear();
+ }
+
+ public:
+ explicit file_print_buffer(F* f) : buffer(grow, size_t()), file_(f) {
+ flockfile(f);
+ file_.init_buffer();
+ auto buf = file_.get_write_buffer();
+ set(buf.data, buf.size);
+ }
+ ~file_print_buffer() {
+ file_.advance_write_buffer(size());
+ bool flush = file_.needs_flush();
+ F* f = file_; // Make funlockfile depend on the template parameter F
+ funlockfile(f); // for the system API detection to work.
+ if (flush) fflush(file_);
+ }
+};
+
+#if !defined(_WIN32) || defined(FMT_USE_WRITE_CONSOLE)
+FMT_FUNC auto write_console(int, string_view) -> bool { return false; }
+#else
using dword = conditional_t<sizeof(long) == 4, unsigned long, unsigned>;
extern "C" __declspec(dllimport) int __stdcall WriteConsoleW( //
void*, const void*, dword, dword*, void*);
-FMT_FUNC bool write_console(std::FILE* f, string_view text) {
- auto fd = _fileno(f);
- if (_isatty(fd)) {
- detail::utf8_to_utf16 u16(string_view(text.data(), text.size()));
- auto written = detail::dword();
- if (detail::WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)),
- u16.c_str(), static_cast<uint32_t>(u16.size()),
- &written, nullptr)) {
- return true;
- }
- }
- // We return false if the file descriptor was not TTY, or it was but
- // SetConsoleW failed which can happen if the output has been redirected to
- // NUL. In both cases when we return false, we should attempt to do regular
- // write via fwrite or std::ostream::write.
- return false;
+FMT_FUNC bool write_console(int fd, string_view text) {
+ auto u16 = utf8_to_utf16(text);
+ return WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)), u16.c_str(),
+ static_cast<dword>(u16.size()), nullptr, nullptr) != 0;
}
#endif
-FMT_FUNC void print(std::FILE* f, string_view text) {
#ifdef _WIN32
- if (write_console(f, text)) return;
+// Print assuming legacy (non-Unicode) encoding.
+FMT_FUNC void vprint_mojibake(std::FILE* f, string_view fmt, format_args args,
+ bool newline) {
+ auto buffer = memory_buffer();
+ detail::vformat_to(buffer, fmt, args);
+ if (newline) buffer.push_back('\n');
+ fwrite_fully(buffer.data(), buffer.size(), f);
+}
#endif
- detail::fwrite_fully(text.data(), 1, text.size(), f);
+
+FMT_FUNC void print(std::FILE* f, string_view text) {
+#if defined(_WIN32) && !defined(FMT_USE_WRITE_CONSOLE)
+ int fd = _fileno(f);
+ if (_isatty(fd)) {
+ std::fflush(f);
+ if (write_console(fd, text)) return;
+ }
+#endif
+ fwrite_fully(text.data(), text.size(), f);
}
} // namespace detail
-FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) {
- memory_buffer buffer;
- detail::vformat_to(buffer, format_str, args);
+FMT_FUNC void vprint_buffered(std::FILE* f, string_view fmt, format_args args) {
+ auto buffer = memory_buffer();
+ detail::vformat_to(buffer, fmt, args);
detail::print(f, {buffer.data(), buffer.size()});
}
-#ifdef _WIN32
-// Print assuming legacy (non-Unicode) encoding.
-FMT_FUNC void detail::vprint_mojibake(std::FILE* f, string_view format_str,
- format_args args) {
- memory_buffer buffer;
- detail::vformat_to(buffer, format_str,
- basic_format_args<buffer_context<char>>(args));
- fwrite_fully(buffer.data(), 1, buffer.size(), f);
+FMT_FUNC void vprint(std::FILE* f, string_view fmt, format_args args) {
+ if (!detail::file_ref(f).is_buffered() || !detail::has_flockfile<>())
+ return vprint_buffered(f, fmt, args);
+ auto&& buffer = detail::file_print_buffer<>(f);
+ return detail::vformat_to(buffer, fmt, args);
+}
+
+FMT_FUNC void vprintln(std::FILE* f, string_view fmt, format_args args) {
+ auto buffer = memory_buffer();
+ detail::vformat_to(buffer, fmt, args);
+ buffer.push_back('\n');
+ detail::print(f, {buffer.data(), buffer.size()});
}
-#endif
-FMT_FUNC void vprint(string_view format_str, format_args args) {
- vprint(stdout, format_str, args);
+FMT_FUNC void vprint(string_view fmt, format_args args) {
+ vprint(stdout, fmt, args);
}
namespace detail {
--- /dev/null
+// Formatting library for C++
+//
+// Copyright (c) 2012 - 2016, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#include "format-inl.h"
+
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template FMT_API auto dragonbox::to_decimal(float x) noexcept
+ -> dragonbox::decimal_fp<float>;
+template FMT_API auto dragonbox::to_decimal(double x) noexcept
+ -> dragonbox::decimal_fp<double>;
+
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+template FMT_API locale_ref::locale_ref(const std::locale& loc);
+template FMT_API auto locale_ref::get<std::locale>() const -> std::locale;
+#endif
+
+// Explicit instantiations for char.
+
+template FMT_API auto thousands_sep_impl(locale_ref)
+ -> thousands_sep_result<char>;
+template FMT_API auto decimal_point_impl(locale_ref) -> char;
+
+template FMT_API void buffer<char>::append(const char*, const char*);
+
+template FMT_API void vformat_to(buffer<char>&, string_view,
+ typename vformat_args<>::type, locale_ref);
+
+// Explicit instantiations for wchar_t.
+
+template FMT_API auto thousands_sep_impl(locale_ref)
+ -> thousands_sep_result<wchar_t>;
+template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t;
+
+template FMT_API void buffer<wchar_t>::append(const wchar_t*, const wchar_t*);
+
+} // namespace detail
+FMT_END_NAMESPACE
#ifndef FMT_FORMAT_H_
#define FMT_FORMAT_H_
-#include <cmath> // std::signbit
-#include <cstdint> // uint32_t
-#include <cstring> // std::memcpy
-#include <limits> // std::numeric_limits
-#include <memory> // std::uninitialized_copy
-#include <stdexcept> // std::runtime_error
-#include <system_error> // std::system_error
-
-#ifdef __cpp_lib_bit_cast
-# include <bit> // std::bitcast
+#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+# define _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+# define FMT_REMOVE_TRANSITIVE_INCLUDES
#endif
-#include "core.h"
+#include "base.h"
+
+#ifndef FMT_MODULE
+# include <cmath> // std::signbit
+# include <cstdint> // uint32_t
+# include <cstring> // std::memcpy
+# include <initializer_list> // std::initializer_list
+# include <limits> // std::numeric_limits
+# if defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI)
+// Workaround for pre gcc 5 libstdc++.
+# include <memory> // std::allocator_traits
+# endif
+# include <stdexcept> // std::runtime_error
+# include <string> // std::string
+# include <system_error> // std::system_error
+
+// Checking FMT_CPLUSPLUS for warning suppression in MSVC.
+# if FMT_HAS_INCLUDE(<bit>) && FMT_CPLUSPLUS > 201703L
+# include <bit> // std::bit_cast
+# endif
+
+// libc++ supports string_view in pre-c++17.
+# if FMT_HAS_INCLUDE(<string_view>) && \
+ (FMT_CPLUSPLUS >= 201703L || defined(_LIBCPP_VERSION))
+# include <string_view>
+# define FMT_USE_STRING_VIEW
+# endif
+#endif // FMT_MODULE
-#if FMT_GCC_VERSION
-# define FMT_GCC_VISIBILITY_HIDDEN __attribute__((visibility("hidden")))
+#if defined __cpp_inline_variables && __cpp_inline_variables >= 201606L
+# define FMT_INLINE_VARIABLE inline
#else
-# define FMT_GCC_VISIBILITY_HIDDEN
+# define FMT_INLINE_VARIABLE
+#endif
+
+#ifndef FMT_NO_UNIQUE_ADDRESS
+# if FMT_CPLUSPLUS >= 202002L
+# if FMT_HAS_CPP_ATTRIBUTE(no_unique_address)
+# define FMT_NO_UNIQUE_ADDRESS [[no_unique_address]]
+// VS2019 v16.10 and later except clang-cl (https://reviews.llvm.org/D110485).
+# elif (FMT_MSC_VERSION >= 1929) && !FMT_CLANG_VERSION
+# define FMT_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]]
+# endif
+# endif
+#endif
+#ifndef FMT_NO_UNIQUE_ADDRESS
+# define FMT_NO_UNIQUE_ADDRESS
#endif
-#ifdef __NVCC__
-# define FMT_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 100 + __CUDACC_VER_MINOR__)
+// Visibility when compiled as a shared library/object.
+#if defined(FMT_LIB_EXPORT) || defined(FMT_SHARED)
+# define FMT_SO_VISIBILITY(value) FMT_VISIBILITY(value)
#else
-# define FMT_CUDA_VERSION 0
+# define FMT_SO_VISIBILITY(value)
#endif
#ifdef __has_builtin
# define FMT_NOINLINE
#endif
-#if FMT_MSC_VERSION
-# define FMT_MSC_DEFAULT = default
-#else
-# define FMT_MSC_DEFAULT
-#endif
+namespace std {
+template <> struct iterator_traits<fmt::appender> {
+ using iterator_category = output_iterator_tag;
+ using value_type = char;
+};
+} // namespace std
#ifndef FMT_THROW
# if FMT_EXCEPTIONS
# define FMT_THROW(x) throw x
# endif
# else
-# define FMT_THROW(x) \
- do { \
- FMT_ASSERT(false, (x).what()); \
- } while (false)
+# define FMT_THROW(x) \
+ ::fmt::detail::assert_fail(__FILE__, __LINE__, (x).what())
# endif
#endif
-#if FMT_EXCEPTIONS
-# define FMT_TRY try
-# define FMT_CATCH(x) catch (x)
-#else
-# define FMT_TRY if (true)
-# define FMT_CATCH(x) if (false)
-#endif
-
#ifndef FMT_MAYBE_UNUSED
# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused)
# define FMT_MAYBE_UNUSED [[maybe_unused]]
#ifndef FMT_USE_USER_DEFINED_LITERALS
// EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs.
-# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \
+//
+// GCC before 4.9 requires a space in `operator"" _a` which is invalid in later
+// compiler versions.
+# if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 409 || \
FMT_MSC_VERSION >= 1900) && \
(!defined(__EDG_VERSION__) || __EDG_VERSION__ >= /* UDL feature */ 480)
# define FMT_USE_USER_DEFINED_LITERALS 1
_BitScanReverse64(&r, x);
# else
// Scan the high 32 bits.
- if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32))) return 63 ^ (r + 32);
+ if (_BitScanReverse(&r, static_cast<uint32_t>(x >> 32)))
+ return 63 ^ static_cast<int>(r + 32);
// Scan the low 32 bits.
_BitScanReverse(&r, static_cast<uint32_t>(x));
# endif
#endif
FMT_BEGIN_NAMESPACE
+
+template <typename Char, typename Traits, typename Allocator>
+struct is_contiguous<std::basic_string<Char, Traits, Allocator>>
+ : std::true_type {};
+
namespace detail {
FMT_CONSTEXPR inline void abort_fuzzing_if(bool condition) {
#endif
}
-template <typename CharT, CharT... C> struct string_literal {
- static constexpr CharT value[sizeof...(C)] = {C...};
- constexpr operator basic_string_view<CharT>() const {
- return {value, sizeof...(C)};
- }
-};
-
-#if FMT_CPLUSPLUS < 201703L
-template <typename CharT, CharT... C>
-constexpr CharT string_literal<CharT, C...>::value[sizeof...(C)];
+#if defined(FMT_USE_STRING_VIEW)
+template <typename Char> using std_string_view = std::basic_string_view<Char>;
+#else
+template <typename T> struct std_string_view {};
#endif
-template <typename Streambuf> class formatbuf : public Streambuf {
- private:
- using char_type = typename Streambuf::char_type;
- using streamsize = decltype(std::declval<Streambuf>().sputn(nullptr, 0));
- using int_type = typename Streambuf::int_type;
- using traits_type = typename Streambuf::traits_type;
-
- buffer<char_type>& buffer_;
-
- public:
- explicit formatbuf(buffer<char_type>& buf) : buffer_(buf) {}
-
- protected:
- // The put area is always empty. This makes the implementation simpler and has
- // the advantage that the streambuf and the buffer are always in sync and
- // sputc never writes into uninitialized memory. A disadvantage is that each
- // call to sputc always results in a (virtual) call to overflow. There is no
- // disadvantage here for sputn since this always results in a call to xsputn.
-
- auto overflow(int_type ch) -> int_type override {
- if (!traits_type::eq_int_type(ch, traits_type::eof()))
- buffer_.push_back(static_cast<char_type>(ch));
- return ch;
- }
-
- auto xsputn(const char_type* s, streamsize count) -> streamsize override {
- buffer_.append(s, s + count);
- return count;
- }
-};
-
// Implementation of std::bit_cast for pre-C++20.
template <typename To, typename From, FMT_ENABLE_IF(sizeof(To) == sizeof(From))>
FMT_CONSTEXPR20 auto bit_cast(const From& from) -> To {
private:
uint64_t lo_, hi_;
- friend uint128_fallback umul128(uint64_t x, uint64_t y) noexcept;
-
public:
constexpr uint128_fallback(uint64_t hi, uint64_t lo) : lo_(lo), hi_(hi) {}
constexpr uint128_fallback(uint64_t value = 0) : lo_(value), hi_(0) {}
- constexpr uint64_t high() const noexcept { return hi_; }
- constexpr uint64_t low() const noexcept { return lo_; }
+ constexpr auto high() const noexcept -> uint64_t { return hi_; }
+ constexpr auto low() const noexcept -> uint64_t { return lo_; }
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
constexpr explicit operator T() const {
-> uint128_fallback {
return {lhs.hi_ & rhs.hi_, lhs.lo_ & rhs.lo_};
}
+ friend constexpr auto operator~(const uint128_fallback& n)
+ -> uint128_fallback {
+ return {~n.hi_, ~n.lo_};
+ }
friend auto operator+(const uint128_fallback& lhs,
const uint128_fallback& rhs) -> uint128_fallback {
auto result = uint128_fallback(lhs);
lo_ = new_lo;
hi_ = new_hi;
}
+ FMT_CONSTEXPR void operator&=(uint128_fallback n) {
+ lo_ &= n.lo_;
+ hi_ &= n.hi_;
+ }
- FMT_CONSTEXPR20 uint128_fallback& operator+=(uint64_t n) noexcept {
+ FMT_CONSTEXPR20 auto operator+=(uint64_t n) noexcept -> uint128_fallback& {
if (is_constant_evaluated()) {
lo_ += n;
hi_ += (lo_ < n ? 1 : 0);
}
// std::numeric_limits<T>::digits may return 0 for 128-bit ints.
template <> constexpr auto num_bits<int128_opt>() -> int { return 128; }
-template <> constexpr auto num_bits<uint128_t>() -> int { return 128; }
+template <> constexpr auto num_bits<uint128_opt>() -> int { return 128; }
+template <> constexpr auto num_bits<uint128_fallback>() -> int { return 128; }
// A heterogeneous bit_cast used for converting 96-bit long double to uint128_t
// and 128-bit pointers to uint128_fallback.
return result;
}
+template <typename UInt>
+FMT_CONSTEXPR20 inline auto countl_zero_fallback(UInt n) -> int {
+ int lz = 0;
+ constexpr UInt msb_mask = static_cast<UInt>(1) << (num_bits<UInt>() - 1);
+ for (; (n & msb_mask) == 0; n <<= 1) lz++;
+ return lz;
+}
+
+FMT_CONSTEXPR20 inline auto countl_zero(uint32_t n) -> int {
+#ifdef FMT_BUILTIN_CLZ
+ if (!is_constant_evaluated()) return FMT_BUILTIN_CLZ(n);
+#endif
+ return countl_zero_fallback(n);
+}
+
+FMT_CONSTEXPR20 inline auto countl_zero(uint64_t n) -> int {
+#ifdef FMT_BUILTIN_CLZLL
+ if (!is_constant_evaluated()) return FMT_BUILTIN_CLZLL(n);
+#endif
+ return countl_zero_fallback(n);
+}
+
FMT_INLINE void assume(bool condition) {
(void)condition;
#if FMT_HAS_BUILTIN(__builtin_assume) && !FMT_ICC_VERSION
__builtin_assume(condition);
+#elif FMT_GCC_VERSION
+ if (!condition) __builtin_unreachable();
#endif
}
return c.data();
}
-#if defined(_SECURE_SCL) && _SECURE_SCL
-// Make a checked iterator to avoid MSVC warnings.
-template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>;
-template <typename T>
-constexpr auto make_checked(T* p, size_t size) -> checked_ptr<T> {
- return {p, size};
-}
-#else
-template <typename T> using checked_ptr = T*;
-template <typename T> constexpr auto make_checked(T* p, size_t) -> T* {
- return p;
-}
-#endif
-
// Attempts to reserve space for n extra characters in the output range.
// Returns a pointer to the reserved range or a reference to it.
-template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)>
+template <typename OutputIt,
+ FMT_ENABLE_IF(is_back_insert_iterator<OutputIt>::value&&
+ is_contiguous<typename OutputIt::container>::value)>
#if FMT_CLANG_VERSION >= 307 && !FMT_ICC_VERSION
__attribute__((no_sanitize("undefined")))
#endif
inline auto
-reserve(std::back_insert_iterator<Container> it, size_t n)
- -> checked_ptr<typename Container::value_type> {
- Container& c = get_container(it);
+reserve(OutputIt it, size_t n) -> typename OutputIt::value_type* {
+ auto& c = get_container(it);
size_t size = c.size();
c.resize(size + n);
- return make_checked(get_data(c) + size, n);
+ return get_data(c) + size;
}
template <typename T>
-inline auto reserve(buffer_appender<T> it, size_t n) -> buffer_appender<T> {
+inline auto reserve(basic_appender<T> it, size_t n) -> basic_appender<T> {
buffer<T>& buf = get_container(it);
buf.try_reserve(buf.size() + n);
return it;
constexpr auto to_pointer(OutputIt, size_t) -> T* {
return nullptr;
}
-template <typename T> auto to_pointer(buffer_appender<T> it, size_t n) -> T* {
+template <typename T> auto to_pointer(basic_appender<T> it, size_t n) -> T* {
buffer<T>& buf = get_container(it);
auto size = buf.size();
+ buf.try_reserve(size + n);
if (buf.capacity() < size + n) return nullptr;
buf.try_resize(size + n);
return buf.data() + size;
}
-template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)>
-inline auto base_iterator(std::back_insert_iterator<Container>& it,
- checked_ptr<typename Container::value_type>)
- -> std::back_insert_iterator<Container> {
+template <typename OutputIt,
+ FMT_ENABLE_IF(is_back_insert_iterator<OutputIt>::value&&
+ is_contiguous<typename OutputIt::container>::value)>
+inline auto base_iterator(OutputIt it,
+ typename OutputIt::container_type::value_type*)
+ -> OutputIt {
return it;
}
return out + count;
}
-#ifdef __cpp_char8_t
-using char8_type = char8_t;
-#else
-enum char8_type : unsigned char {};
-#endif
-
template <typename OutChar, typename InputIt, typename OutputIt>
-FMT_CONSTEXPR FMT_NOINLINE auto copy_str_noinline(InputIt begin, InputIt end,
- OutputIt out) -> OutputIt {
- return copy_str<OutChar>(begin, end, out);
+FMT_CONSTEXPR FMT_NOINLINE auto copy_noinline(InputIt begin, InputIt end,
+ OutputIt out) -> OutputIt {
+ return copy<OutChar>(begin, end, out);
}
// A public domain branchless UTF-8 decoder by Christopher Wellons:
constexpr const int shiftc[] = {0, 18, 12, 6, 0};
constexpr const int shifte[] = {0, 6, 4, 2, 0};
- int len = code_point_length_impl(*s);
+ int len = "\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0\0\0\2\2\2\2\3\3\4"
+ [static_cast<unsigned char>(*s) >> 3];
// Compute the pointer to the next character early so that the next
// iteration can start working on the next character. Neither Clang
// nor GCC figure out this reordering on their own.
return next;
}
-constexpr uint32_t invalid_code_point = ~uint32_t();
+constexpr FMT_INLINE_VARIABLE uint32_t invalid_code_point = ~uint32_t();
// Invokes f(cp, sv) for every code point cp in s with sv being the string view
// corresponding to the code point. cp is invalid_code_point on error.
}
if (auto num_chars_left = s.data() + s.size() - p) {
char buf[2 * block_size - 1] = {};
- copy_str<char>(p, p + num_chars_left, buf);
+ copy<char>(p, p + num_chars_left, buf);
const char* buf_ptr = buf;
do {
auto end = decode(buf_ptr, p);
}
// Computes approximate display width of a UTF-8 string.
-FMT_CONSTEXPR inline size_t compute_width(string_view s) {
+FMT_CONSTEXPR inline auto compute_width(string_view s) -> size_t {
size_t num_code_points = 0;
// It is not a lambda for compatibility with C++14.
struct count_code_points {
return true;
}
};
+ // We could avoid branches by using utf8_decode directly.
for_each_codepoint(s, count_code_points{&num_code_points});
return num_code_points;
}
-inline auto compute_width(basic_string_view<char8_type> s) -> size_t {
- return compute_width(
- string_view(reinterpret_cast<const char*>(s.data()), s.size()));
-}
-
template <typename Char>
inline auto code_point_index(basic_string_view<Char> s, size_t n) -> size_t {
size_t size = s.size();
// Calculates the index of the nth code point in a UTF-8 string.
inline auto code_point_index(string_view s, size_t n) -> size_t {
- const char* data = s.data();
- size_t num_code_points = 0;
- for (size_t i = 0, size = s.size(); i != size; ++i) {
- if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) return i;
- }
- return s.size();
+ size_t result = s.size();
+ const char* begin = s.begin();
+ for_each_codepoint(s, [begin, &n, &result](uint32_t, string_view sv) {
+ if (n != 0) {
+ --n;
+ return true;
+ }
+ result = to_unsigned(sv.begin() - begin);
+ return false;
+ });
+ return result;
}
-inline auto code_point_index(basic_string_view<char8_type> s, size_t n)
- -> size_t {
- return code_point_index(
- string_view(reinterpret_cast<const char*>(s.data()), s.size()), n);
-}
+template <typename T> struct is_integral : std::is_integral<T> {};
+template <> struct is_integral<int128_opt> : std::true_type {};
+template <> struct is_integral<uint128_t> : std::true_type {};
-#ifndef FMT_USE_FLOAT128
-# ifdef __SIZEOF_FLOAT128__
-# define FMT_USE_FLOAT128 1
-# else
-# define FMT_USE_FLOAT128 0
-# endif
+template <typename T>
+using is_signed =
+ std::integral_constant<bool, std::numeric_limits<T>::is_signed ||
+ std::is_same<T, int128_opt>::value>;
+
+template <typename T>
+using is_integer =
+ bool_constant<is_integral<T>::value && !std::is_same<T, bool>::value &&
+ !std::is_same<T, char>::value &&
+ !std::is_same<T, wchar_t>::value>;
+
+#ifndef FMT_USE_FLOAT
+# define FMT_USE_FLOAT 1
+#endif
+#ifndef FMT_USE_DOUBLE
+# define FMT_USE_DOUBLE 1
+#endif
+#ifndef FMT_USE_LONG_DOUBLE
+# define FMT_USE_LONG_DOUBLE 1
+#endif
+
+#if defined(FMT_USE_FLOAT128)
+// Use the provided definition.
+#elif FMT_CLANG_VERSION && FMT_HAS_INCLUDE(<quadmath.h>)
+# define FMT_USE_FLOAT128 1
+#elif FMT_GCC_VERSION && defined(_GLIBCXX_USE_FLOAT128) && \
+ !defined(__STRICT_ANSI__)
+# define FMT_USE_FLOAT128 1
+#else
+# define FMT_USE_FLOAT128 0
#endif
#if FMT_USE_FLOAT128
using float128 = __float128;
#else
using float128 = void;
#endif
+
template <typename T> using is_float128 = std::is_same<T, float128>;
template <typename T>
# define FMT_USE_FULL_CACHE_DRAGONBOX 0
#endif
-template <typename T>
-template <typename U>
-void buffer<T>::append(const U* begin, const U* end) {
- while (begin != end) {
- auto count = to_unsigned(end - begin);
- try_reserve(size_ + count);
- auto free_cap = capacity_ - size_;
- if (free_cap < count) count = free_cap;
- std::uninitialized_copy_n(begin, count, make_checked(ptr_ + size_, count));
- size_ += count;
- begin += count;
- }
-}
-
template <typename T, typename Enable = void>
struct is_locale : std::false_type {};
template <typename T>
struct is_locale<T, void_t<decltype(T::classic())>> : std::true_type {};
} // namespace detail
-FMT_MODULE_EXPORT_BEGIN
+FMT_BEGIN_EXPORT
// The number of characters to store in the basic_memory_buffer object itself
// to avoid dynamic memory allocation.
enum { inline_buffer_size = 500 };
/**
- \rst
- A dynamically growing memory buffer for trivially copyable/constructible types
- with the first ``SIZE`` elements stored in the object itself.
-
- You can use the ``memory_buffer`` type alias for ``char`` instead.
-
- **Example**::
-
- auto out = fmt::memory_buffer();
- format_to(std::back_inserter(out), "The answer is {}.", 42);
-
- This will append the following output to the ``out`` object:
-
- .. code-block:: none
-
- The answer is 42.
-
- The output can be converted to an ``std::string`` with ``to_string(out)``.
- \endrst
+ * A dynamically growing memory buffer for trivially copyable/constructible
+ * types with the first `SIZE` elements stored in the object itself. Most
+ * commonly used via the `memory_buffer` alias for `char`.
+ *
+ * **Example**:
+ *
+ * auto out = fmt::memory_buffer();
+ * fmt::format_to(std::back_inserter(out), "The answer is {}.", 42);
+ *
+ * This will append "The answer is 42." to `out`. The buffer content can be
+ * converted to `std::string` with `to_string(out)`.
*/
template <typename T, size_t SIZE = inline_buffer_size,
typename Allocator = std::allocator<T>>
-class basic_memory_buffer final : public detail::buffer<T> {
+class basic_memory_buffer : public detail::buffer<T> {
private:
T store_[SIZE];
- // Don't inherit from Allocator avoid generating type_info for it.
- Allocator alloc_;
+ // Don't inherit from Allocator to avoid generating type_info for it.
+ FMT_NO_UNIQUE_ADDRESS Allocator alloc_;
// Deallocate memory allocated by the buffer.
FMT_CONSTEXPR20 void deallocate() {
if (data != store_) alloc_.deallocate(data, this->capacity());
}
- protected:
- FMT_CONSTEXPR20 void grow(size_t size) override;
+ static FMT_CONSTEXPR20 void grow(detail::buffer<T>& buf, size_t size) {
+ detail::abort_fuzzing_if(size > 5000);
+ auto& self = static_cast<basic_memory_buffer&>(buf);
+ const size_t max_size =
+ std::allocator_traits<Allocator>::max_size(self.alloc_);
+ size_t old_capacity = buf.capacity();
+ size_t new_capacity = old_capacity + old_capacity / 2;
+ if (size > new_capacity)
+ new_capacity = size;
+ else if (new_capacity > max_size)
+ new_capacity = size > max_size ? size : max_size;
+ T* old_data = buf.data();
+ T* new_data = self.alloc_.allocate(new_capacity);
+ // Suppress a bogus -Wstringop-overflow in gcc 13.1 (#3481).
+ detail::assume(buf.size() <= new_capacity);
+ // The following code doesn't throw, so the raw pointer above doesn't leak.
+ memcpy(new_data, old_data, buf.size() * sizeof(T));
+ self.set(new_data, new_capacity);
+ // deallocate must not throw according to the standard, but even if it does,
+ // the buffer already uses the new storage and will deallocate it in
+ // destructor.
+ if (old_data != self.store_) self.alloc_.deallocate(old_data, old_capacity);
+ }
public:
using value_type = T;
FMT_CONSTEXPR20 explicit basic_memory_buffer(
const Allocator& alloc = Allocator())
- : alloc_(alloc) {
+ : detail::buffer<T>(grow), alloc_(alloc) {
this->set(store_, SIZE);
if (detail::is_constant_evaluated()) detail::fill_n(store_, SIZE, T());
}
size_t size = other.size(), capacity = other.capacity();
if (data == other.store_) {
this->set(store_, capacity);
- detail::copy_str<T>(other.store_, other.store_ + size,
- detail::make_checked(store_, capacity));
+ detail::copy<T>(other.store_, other.store_ + size, store_);
} else {
this->set(data, capacity);
// Set pointer to the inline array so that delete is not called
}
public:
- /**
- \rst
- Constructs a :class:`fmt::basic_memory_buffer` object moving the content
- of the other object to it.
- \endrst
- */
- FMT_CONSTEXPR20 basic_memory_buffer(basic_memory_buffer&& other) noexcept {
+ /// Constructs a `basic_memory_buffer` object moving the content of the other
+ /// object to it.
+ FMT_CONSTEXPR20 basic_memory_buffer(basic_memory_buffer&& other) noexcept
+ : detail::buffer<T>(grow) {
move(other);
}
- /**
- \rst
- Moves the content of the other ``basic_memory_buffer`` object to this one.
- \endrst
- */
+ /// Moves the content of the other `basic_memory_buffer` object to this one.
auto operator=(basic_memory_buffer&& other) noexcept -> basic_memory_buffer& {
FMT_ASSERT(this != &other, "");
deallocate();
// Returns a copy of the allocator associated with this buffer.
auto get_allocator() const -> Allocator { return alloc_; }
- /**
- Resizes the buffer to contain *count* elements. If T is a POD type new
- elements may not be initialized.
- */
+ /// Resizes the buffer to contain `count` elements. If T is a POD type new
+ /// elements may not be initialized.
FMT_CONSTEXPR20 void resize(size_t count) { this->try_resize(count); }
- /** Increases the buffer capacity to *new_capacity*. */
+ /// Increases the buffer capacity to `new_capacity`.
void reserve(size_t new_capacity) { this->try_reserve(new_capacity); }
- // Directly append data into the buffer
using detail::buffer<T>::append;
template <typename ContiguousRange>
void append(const ContiguousRange& range) {
}
};
-template <typename T, size_t SIZE, typename Allocator>
-FMT_CONSTEXPR20 void basic_memory_buffer<T, SIZE, Allocator>::grow(
- size_t size) {
- detail::abort_fuzzing_if(size > 5000);
- const size_t max_size = std::allocator_traits<Allocator>::max_size(alloc_);
- size_t old_capacity = this->capacity();
- size_t new_capacity = old_capacity + old_capacity / 2;
- if (size > new_capacity)
- new_capacity = size;
- else if (new_capacity > max_size)
- new_capacity = size > max_size ? size : max_size;
- T* old_data = this->data();
- T* new_data =
- std::allocator_traits<Allocator>::allocate(alloc_, new_capacity);
- // The following code doesn't throw, so the raw pointer above doesn't leak.
- std::uninitialized_copy(old_data, old_data + this->size(),
- detail::make_checked(new_data, new_capacity));
- this->set(new_data, new_capacity);
- // deallocate must not throw according to the standard, but even if it does,
- // the buffer already uses the new storage and will deallocate it in
- // destructor.
- if (old_data != store_) alloc_.deallocate(old_data, old_capacity);
-}
-
using memory_buffer = basic_memory_buffer<char>;
template <typename T, size_t SIZE, typename Allocator>
struct is_contiguous<basic_memory_buffer<T, SIZE, Allocator>> : std::true_type {
};
+FMT_END_EXPORT
namespace detail {
-#ifdef _WIN32
-FMT_API bool write_console(std::FILE* f, string_view text);
-#endif
+FMT_API auto write_console(int fd, string_view text) -> bool;
FMT_API void print(std::FILE*, string_view);
} // namespace detail
-/** A formatting error such as invalid format string. */
-FMT_CLASS_API
-class FMT_API format_error : public std::runtime_error {
+FMT_BEGIN_EXPORT
+
+// Suppress a misleading warning in older versions of clang.
+#if FMT_CLANG_VERSION
+# pragma clang diagnostic ignored "-Wweak-vtables"
+#endif
+
+/// An error reported from a formatting function.
+class FMT_SO_VISIBILITY("default") format_error : public std::runtime_error {
public:
- explicit format_error(const char* message) : std::runtime_error(message) {}
- explicit format_error(const std::string& message)
- : std::runtime_error(message) {}
- format_error(const format_error&) = default;
- format_error& operator=(const format_error&) = default;
- format_error(format_error&&) = default;
- format_error& operator=(format_error&&) = default;
- ~format_error() noexcept override FMT_MSC_DEFAULT;
+ using std::runtime_error::runtime_error;
};
namespace detail_exported {
#if FMT_USE_NONTYPE_TEMPLATE_ARGS
template <typename Char, size_t N> struct fixed_string {
constexpr fixed_string(const Char (&str)[N]) {
- detail::copy_str<Char, const Char*, Char*>(static_cast<const Char*>(str),
- str + N, data);
+ detail::copy<Char, const Char*, Char*>(static_cast<const Char*>(str),
+ str + N, data);
}
Char data[N] = {};
};
return {s, N - (std::char_traits<Char>::to_int_type(s[N - 1]) == 0 ? 1 : 0)};
}
template <typename Char>
-constexpr auto compile_string_to_view(detail::std_string_view<Char> s)
+constexpr auto compile_string_to_view(basic_string_view<Char> s)
-> basic_string_view<Char> {
- return {s.data(), s.size()};
+ return s;
}
} // namespace detail_exported
-FMT_BEGIN_DETAIL_NAMESPACE
+// A generic formatting context with custom output iterator and character
+// (code unit) support. Char is the format string code unit type which can be
+// different from OutputIt::value_type.
+template <typename OutputIt, typename Char> class generic_context {
+ private:
+ OutputIt out_;
+ basic_format_args<generic_context> args_;
+ detail::locale_ref loc_;
-template <typename T> struct is_integral : std::is_integral<T> {};
-template <> struct is_integral<int128_opt> : std::true_type {};
-template <> struct is_integral<uint128_t> : std::true_type {};
+ public:
+ using char_type = Char;
+ using iterator = OutputIt;
+ using parse_context_type = basic_format_parse_context<Char>;
+ template <typename T> using formatter_type = formatter<T, Char>;
-template <typename T>
-using is_signed =
- std::integral_constant<bool, std::numeric_limits<T>::is_signed ||
- std::is_same<T, int128_opt>::value>;
+ constexpr generic_context(OutputIt out,
+ basic_format_args<generic_context> ctx_args,
+ detail::locale_ref loc = {})
+ : out_(out), args_(ctx_args), loc_(loc) {}
+ generic_context(generic_context&&) = default;
+ generic_context(const generic_context&) = delete;
+ void operator=(const generic_context&) = delete;
+
+ constexpr auto arg(int id) const -> basic_format_arg<generic_context> {
+ return args_.get(id);
+ }
+ auto arg(basic_string_view<Char> name) -> basic_format_arg<generic_context> {
+ return args_.get(name);
+ }
+ FMT_CONSTEXPR auto arg_id(basic_string_view<Char> name) -> int {
+ return args_.get_id(name);
+ }
+ auto args() const -> const basic_format_args<generic_context>& {
+ return args_;
+ }
+
+ FMT_CONSTEXPR auto out() -> iterator { return out_; }
+
+ void advance_to(iterator it) {
+ if (!detail::is_back_insert_iterator<iterator>()) out_ = it;
+ }
+
+ FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; }
+};
+
+class loc_value {
+ private:
+ basic_format_arg<format_context> value_;
+
+ public:
+ template <typename T, FMT_ENABLE_IF(!detail::is_float128<T>::value)>
+ loc_value(T value) : value_(detail::make_arg<format_context>(value)) {}
+
+ template <typename T, FMT_ENABLE_IF(detail::is_float128<T>::value)>
+ loc_value(T) {}
+
+ template <typename Visitor> auto visit(Visitor&& vis) -> decltype(vis(0)) {
+ return value_.visit(vis);
+ }
+};
+
+// A locale facet that formats values in UTF-8.
+// It is parameterized on the locale to avoid the heavy <locale> include.
+template <typename Locale> class format_facet : public Locale::facet {
+ private:
+ std::string separator_;
+ std::string grouping_;
+ std::string decimal_point_;
+
+ protected:
+ virtual auto do_put(appender out, loc_value val,
+ const format_specs& specs) const -> bool;
+
+ public:
+ static FMT_API typename Locale::id id;
+
+ explicit format_facet(Locale& loc);
+ explicit format_facet(string_view sep = "",
+ std::initializer_list<unsigned char> g = {3},
+ std::string decimal_point = ".")
+ : separator_(sep.data(), sep.size()),
+ grouping_(g.begin(), g.end()),
+ decimal_point_(decimal_point) {}
+
+ auto put(appender out, loc_value val, const format_specs& specs) const
+ -> bool {
+ return do_put(out, val, specs);
+ }
+};
+
+FMT_END_EXPORT
+
+namespace detail {
// Returns true if value is negative, false otherwise.
// Same as `value < 0` but doesn't produce warnings if T is an unsigned type.
template <typename T>
using uint64_or_128_t = conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>;
-#define FMT_POWERS_OF_10(factor) \
- factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \
- (factor)*1000000, (factor)*10000000, (factor)*100000000, \
- (factor)*1000000000
+#define FMT_POWERS_OF_10(factor) \
+ factor * 10, (factor) * 100, (factor) * 1000, (factor) * 10000, \
+ (factor) * 100000, (factor) * 1000000, (factor) * 10000000, \
+ (factor) * 100000000, (factor) * 1000000000
// Converts value in the range [0, 100) to a string.
-constexpr const char* digits2(size_t value) {
+constexpr auto digits2(size_t value) -> const char* {
// GCC generates slightly better code when value is pointer-size.
return &"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839"
}
// Sign is a template parameter to workaround a bug in gcc 4.8.
-template <typename Char, typename Sign> constexpr Char sign(Sign s) {
+template <typename Char, typename Sign> constexpr auto sign(Sign s) -> Char {
#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 604
static_assert(std::is_same<Sign, sign_t>::value, "");
#endif
- return static_cast<Char>("\0-+ "[s]);
+ return static_cast<char>(((' ' << 24) | ('+' << 16) | ('-' << 8)) >> (s * 8));
}
template <typename T> FMT_CONSTEXPR auto count_digits_fallback(T n) -> int {
// except for n == 0 in which case count_digits returns 1.
FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int {
#ifdef FMT_BUILTIN_CLZLL
- if (!is_constant_evaluated()) {
- return do_count_digits(n);
- }
+ if (!is_constant_evaluated()) return do_count_digits(n);
#endif
return count_digits_fallback(n);
}
FMT_INLINE auto do_count_digits(uint32_t n) -> int {
// An optimization by Kendall Willets from https://bit.ly/3uOIQrB.
// This increments the upper 32 bits (log10(T) - 1) when >= T is added.
-# define FMT_INC(T) (((sizeof(# T) - 1ull) << 32) - T)
+# define FMT_INC(T) (((sizeof(#T) - 1ull) << 32) - T)
static constexpr uint64_t table[] = {
FMT_INC(0), FMT_INC(0), FMT_INC(0), // 8
FMT_INC(10), FMT_INC(10), FMT_INC(10), // 64
FMT_CONSTEXPR inline auto format_decimal(Iterator out, UInt value, int size)
-> format_decimal_result<Iterator> {
// Buffer is large enough to hold all digits (digits10 + 1).
- Char buffer[digits10<UInt>() + 1];
+ Char buffer[digits10<UInt>() + 1] = {};
auto end = format_decimal(buffer, value, size).end;
- return {out, detail::copy_str_noinline<Char>(buffer, end, out)};
+ return {out, detail::copy_noinline<Char>(buffer, end, out)};
}
template <unsigned BASE_BITS, typename Char, typename UInt>
}
template <unsigned BASE_BITS, typename Char, typename It, typename UInt>
-inline auto format_uint(It out, UInt value, int num_digits, bool upper = false)
- -> It {
+FMT_CONSTEXPR inline auto format_uint(It out, UInt value, int num_digits,
+ bool upper = false) -> It {
if (auto ptr = to_pointer<Char>(out, to_unsigned(num_digits))) {
format_uint<BASE_BITS>(ptr, value, num_digits, upper);
return out;
}
// Buffer should be large enough to hold all digits (digits / BASE_BITS + 1).
- char buffer[num_bits<UInt>() / BASE_BITS + 1];
+ char buffer[num_bits<UInt>() / BASE_BITS + 1] = {};
format_uint<BASE_BITS>(buffer, value, num_digits, upper);
- return detail::copy_str_noinline<Char>(buffer, buffer + num_digits, out);
+ return detail::copy_noinline<Char>(buffer, buffer + num_digits, out);
}
// A converter from UTF-8 to UTF-16.
auto str() const -> std::wstring { return {&buffer_[0], size()}; }
};
+enum class to_utf8_error_policy { abort, replace };
+
+// A converter from UTF-16/UTF-32 (host endian) to UTF-8.
+template <typename WChar, typename Buffer = memory_buffer> class to_utf8 {
+ private:
+ Buffer buffer_;
+
+ public:
+ to_utf8() {}
+ explicit to_utf8(basic_string_view<WChar> s,
+ to_utf8_error_policy policy = to_utf8_error_policy::abort) {
+ static_assert(sizeof(WChar) == 2 || sizeof(WChar) == 4,
+ "Expect utf16 or utf32");
+ if (!convert(s, policy))
+ FMT_THROW(std::runtime_error(sizeof(WChar) == 2 ? "invalid utf16"
+ : "invalid utf32"));
+ }
+ operator string_view() const { return string_view(&buffer_[0], size()); }
+ auto size() const -> size_t { return buffer_.size() - 1; }
+ auto c_str() const -> const char* { return &buffer_[0]; }
+ auto str() const -> std::string { return std::string(&buffer_[0], size()); }
+
+ // Performs conversion returning a bool instead of throwing exception on
+ // conversion error. This method may still throw in case of memory allocation
+ // error.
+ auto convert(basic_string_view<WChar> s,
+ to_utf8_error_policy policy = to_utf8_error_policy::abort)
+ -> bool {
+ if (!convert(buffer_, s, policy)) return false;
+ buffer_.push_back(0);
+ return true;
+ }
+ static auto convert(Buffer& buf, basic_string_view<WChar> s,
+ to_utf8_error_policy policy = to_utf8_error_policy::abort)
+ -> bool {
+ for (auto p = s.begin(); p != s.end(); ++p) {
+ uint32_t c = static_cast<uint32_t>(*p);
+ if (sizeof(WChar) == 2 && c >= 0xd800 && c <= 0xdfff) {
+ // Handle a surrogate pair.
+ ++p;
+ if (p == s.end() || (c & 0xfc00) != 0xd800 || (*p & 0xfc00) != 0xdc00) {
+ if (policy == to_utf8_error_policy::abort) return false;
+ buf.append(string_view("\xEF\xBF\xBD"));
+ --p;
+ } else {
+ c = (c << 10) + static_cast<uint32_t>(*p) - 0x35fdc00;
+ }
+ } else if (c < 0x80) {
+ buf.push_back(static_cast<char>(c));
+ } else if (c < 0x800) {
+ buf.push_back(static_cast<char>(0xc0 | (c >> 6)));
+ buf.push_back(static_cast<char>(0x80 | (c & 0x3f)));
+ } else if ((c >= 0x800 && c <= 0xd7ff) || (c >= 0xe000 && c <= 0xffff)) {
+ buf.push_back(static_cast<char>(0xe0 | (c >> 12)));
+ buf.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6)));
+ buf.push_back(static_cast<char>(0x80 | (c & 0x3f)));
+ } else if (c >= 0x10000 && c <= 0x10ffff) {
+ buf.push_back(static_cast<char>(0xf0 | (c >> 18)));
+ buf.push_back(static_cast<char>(0x80 | ((c & 0x3ffff) >> 12)));
+ buf.push_back(static_cast<char>(0x80 | ((c & 0xfff) >> 6)));
+ buf.push_back(static_cast<char>(0x80 | (c & 0x3f)));
+ } else {
+ return false;
+ }
+ }
+ return true;
+ }
+};
+
+// Computes 128-bit result of multiplication of two 64-bit unsigned integers.
+inline auto umul128(uint64_t x, uint64_t y) noexcept -> uint128_fallback {
+#if FMT_USE_INT128
+ auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y);
+ return {static_cast<uint64_t>(p >> 64), static_cast<uint64_t>(p)};
+#elif defined(_MSC_VER) && defined(_M_X64)
+ auto hi = uint64_t();
+ auto lo = _umul128(x, y, &hi);
+ return {hi, lo};
+#else
+ const uint64_t mask = static_cast<uint64_t>(max_value<uint32_t>());
+
+ uint64_t a = x >> 32;
+ uint64_t b = x & mask;
+ uint64_t c = y >> 32;
+ uint64_t d = y & mask;
+
+ uint64_t ac = a * c;
+ uint64_t bc = b * c;
+ uint64_t ad = a * d;
+ uint64_t bd = b * d;
+
+ uint64_t intermediate = (bd >> 32) + (ad & mask) + (bc & mask);
+
+ return {ac + (intermediate >> 32) + (ad >> 32) + (bc >> 32),
+ (intermediate << 32) + (bd & mask)};
+#endif
+}
+
namespace dragonbox {
+// Computes floor(log10(pow(2, e))) for e in [-2620, 2620] using the method from
+// https://fmt.dev/papers/Dragonbox.pdf#page=28, section 6.1.
+inline auto floor_log10_pow2(int e) noexcept -> int {
+ FMT_ASSERT(e <= 2620 && e >= -2620, "too large exponent");
+ static_assert((-1 >> 1) == -1, "right shift is not arithmetic");
+ return (e * 315653) >> 20;
+}
+
+inline auto floor_log2_pow10(int e) noexcept -> int {
+ FMT_ASSERT(e <= 1233 && e >= -1233, "too large exponent");
+ return (e * 1741647) >> 19;
+}
+
+// Computes upper 64 bits of multiplication of two 64-bit unsigned integers.
+inline auto umul128_upper64(uint64_t x, uint64_t y) noexcept -> uint64_t {
+#if FMT_USE_INT128
+ auto p = static_cast<uint128_opt>(x) * static_cast<uint128_opt>(y);
+ return static_cast<uint64_t>(p >> 64);
+#elif defined(_MSC_VER) && defined(_M_X64)
+ return __umulh(x, y);
+#else
+ return umul128(x, y).high();
+#endif
+}
+
+// Computes upper 128 bits of multiplication of a 64-bit unsigned integer and a
+// 128-bit unsigned integer.
+inline auto umul192_upper128(uint64_t x, uint128_fallback y) noexcept
+ -> uint128_fallback {
+ uint128_fallback r = umul128(x, y.high());
+ r += umul128_upper64(x, y.low());
+ return r;
+}
+
+FMT_API auto get_cached_power(int k) noexcept -> uint128_fallback;
// Type-specific information that Dragonbox uses.
template <typename T, typename Enable = void> struct float_info;
static const int big_divisor = 1000;
static const int small_divisor = 100;
static const int min_k = -292;
- static const int max_k = 326;
+ static const int max_k = 341;
static const int shorter_interval_tie_lower_threshold = -77;
static const int shorter_interval_tie_upper_threshold = -77;
};
} // namespace dragonbox
// Returns true iff Float has the implicit bit which is not stored.
-template <typename Float> constexpr bool has_implicit_bit() {
+template <typename Float> constexpr auto has_implicit_bit() -> bool {
// An 80-bit FP number has a 64-bit significand an no implicit bit.
return std::numeric_limits<Float>::digits != 64;
}
// Returns the number of significand bits stored in Float. The implicit bit is
// not counted since it is not stored.
-template <typename Float> constexpr int num_significand_bits() {
+template <typename Float> constexpr auto num_significand_bits() -> int {
// std::numeric_limits may not support __float128.
return is_float128<Float>() ? 112
: (std::numeric_limits<Float>::digits -
template <typename Float>
constexpr auto exponent_mask() ->
typename dragonbox::float_info<Float>::carrier_uint {
- using uint = typename dragonbox::float_info<Float>::carrier_uint;
- return ((uint(1) << dragonbox::float_info<Float>::exponent_bits) - 1)
+ using float_uint = typename dragonbox::float_info<Float>::carrier_uint;
+ return ((float_uint(1) << dragonbox::float_info<Float>::exponent_bits) - 1)
<< num_significand_bits<Float>();
}
template <typename Float> constexpr auto exponent_bias() -> int {
// Normalizes the value converted from double and multiplied by (1 << SHIFT).
template <int SHIFT = 0, typename F>
-FMT_CONSTEXPR basic_fp<F> normalize(basic_fp<F> value) {
+FMT_CONSTEXPR auto normalize(basic_fp<F> value) -> basic_fp<F> {
// Handle subnormals.
const auto implicit_bit = F(1) << num_significand_bits<double>();
const auto shifted_implicit_bit = implicit_bit << SHIFT;
}
// Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking.
-FMT_CONSTEXPR inline uint64_t multiply(uint64_t lhs, uint64_t rhs) {
+FMT_CONSTEXPR inline auto multiply(uint64_t lhs, uint64_t rhs) -> uint64_t {
#if FMT_USE_INT128
auto product = static_cast<__uint128_t>(lhs) * rhs;
auto f = static_cast<uint64_t>(product >> 64);
#endif
}
-FMT_CONSTEXPR inline fp operator*(fp x, fp y) {
+FMT_CONSTEXPR inline auto operator*(fp x, fp y) -> fp {
return {multiply(x.f, y.f), x.e + y.e + 64};
}
-template <typename T = void> struct basic_data {
- // Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340.
- // These are generated by support/compute-powers.py.
- static constexpr uint64_t pow10_significands[87] = {
- 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76,
- 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df,
- 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c,
- 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5,
- 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57,
- 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7,
- 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e,
- 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996,
- 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126,
- 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053,
- 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f,
- 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b,
- 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06,
- 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb,
- 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000,
- 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984,
- 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068,
- 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8,
- 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758,
- 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85,
- 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d,
- 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25,
- 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2,
- 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a,
- 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410,
- 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129,
- 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85,
- 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841,
- 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b,
- };
-
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
-# pragma GCC diagnostic push
-# pragma GCC diagnostic ignored "-Wnarrowing"
-#endif
- // Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding
- // to significands above.
- static constexpr int16_t pow10_exponents[87] = {
- -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954,
- -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661,
- -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369,
- -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77,
- -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216,
- 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508,
- 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800,
- 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066};
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
-# pragma GCC diagnostic pop
-#endif
-
- static constexpr uint64_t power_of_10_64[20] = {
- 1, FMT_POWERS_OF_10(1ULL), FMT_POWERS_OF_10(1000000000ULL),
- 10000000000000000000ULL};
-};
-
-#if FMT_CPLUSPLUS < 201703L
-template <typename T> constexpr uint64_t basic_data<T>::pow10_significands[];
-template <typename T> constexpr int16_t basic_data<T>::pow10_exponents[];
-template <typename T> constexpr uint64_t basic_data<T>::power_of_10_64[];
-#endif
-
-// This is a struct rather than an alias to avoid shadowing warnings in gcc.
-struct data : basic_data<> {};
-
-// Returns a cached power of 10 `c_k = c_k.f * pow(2, c_k.e)` such that its
-// (binary) exponent satisfies `min_exponent <= c_k.e <= min_exponent + 28`.
-FMT_CONSTEXPR inline fp get_cached_power(int min_exponent,
- int& pow10_exponent) {
- const int shift = 32;
- // log10(2) = 0x0.4d104d427de7fbcc...
- const int64_t significand = 0x4d104d427de7fbcc;
- int index = static_cast<int>(
- ((min_exponent + fp::num_significand_bits - 1) * (significand >> shift) +
- ((int64_t(1) << shift) - 1)) // ceil
- >> 32 // arithmetic shift
- );
- // Decimal exponent of the first (smallest) cached power of 10.
- const int first_dec_exp = -348;
- // Difference between 2 consecutive decimal exponents in cached powers of 10.
- const int dec_exp_step = 8;
- index = (index - first_dec_exp - 1) / dec_exp_step + 1;
- pow10_exponent = first_dec_exp + index * dec_exp_step;
- // Using *(x + index) instead of x[index] avoids an issue with some compilers
- // using the EDG frontend (e.g. nvhpc/22.3 in C++17 mode).
- return {*(data::pow10_significands + index),
- *(data::pow10_exponents + index)};
-}
-
-#ifndef _MSC_VER
-# define FMT_SNPRINTF snprintf
-#else
-FMT_API auto fmt_snprintf(char* buf, size_t size, const char* fmt, ...) -> int;
-# define FMT_SNPRINTF fmt_snprintf
-#endif // _MSC_VER
-
-// Formats a floating-point number with snprintf using the hexfloat format.
-template <typename T>
-auto snprintf_float(T value, int precision, float_specs specs,
- buffer<char>& buf) -> int {
- // Buffer capacity must be non-zero, otherwise MSVC's vsnprintf_s will fail.
- FMT_ASSERT(buf.capacity() > buf.size(), "empty buffer");
- FMT_ASSERT(specs.format == float_format::hex, "");
- static_assert(!std::is_same<T, float>::value, "");
-
- // Build the format string.
- char format[7]; // The longest format is "%#.*Le".
- char* format_ptr = format;
- *format_ptr++ = '%';
- if (specs.showpoint) *format_ptr++ = '#';
- if (precision >= 0) {
- *format_ptr++ = '.';
- *format_ptr++ = '*';
- }
- if (std::is_same<T, long double>()) *format_ptr++ = 'L';
- *format_ptr++ = specs.upper ? 'A' : 'a';
- *format_ptr = '\0';
-
- // Format using snprintf.
- auto offset = buf.size();
- for (;;) {
- auto begin = buf.data() + offset;
- auto capacity = buf.capacity() - offset;
- abort_fuzzing_if(precision > 100000);
- // Suppress the warning about a nonliteral format string.
- // Cannot use auto because of a bug in MinGW (#1532).
- int (*snprintf_ptr)(char*, size_t, const char*, ...) = FMT_SNPRINTF;
- int result = precision >= 0
- ? snprintf_ptr(begin, capacity, format, precision, value)
- : snprintf_ptr(begin, capacity, format, value);
- if (result < 0) {
- // The buffer will grow exponentially.
- buf.try_reserve(buf.capacity() + 1);
- continue;
- }
- auto size = to_unsigned(result);
- // Size equal to capacity means that the last character was truncated.
- if (size < capacity) {
- buf.try_resize(size + offset);
- return 0;
- }
- buf.try_reserve(size + offset + 1); // Add 1 for the terminating '\0'.
- }
-}
-
-template <typename T>
+template <typename T, bool doublish = num_bits<T>() == num_bits<double>()>
using convert_float_result =
- conditional_t<std::is_same<T, float>::value || sizeof(T) == sizeof(double),
- double, T>;
+ conditional_t<std::is_same<T, float>::value || doublish, double, T>;
template <typename T>
constexpr auto convert_float(T value) -> convert_float_result<T> {
return static_cast<convert_float_result<T>>(value);
}
-template <typename OutputIt, typename Char>
-FMT_NOINLINE FMT_CONSTEXPR auto fill(OutputIt it, size_t n,
- const fill_t<Char>& fill) -> OutputIt {
+template <typename Char, typename OutputIt>
+FMT_NOINLINE FMT_CONSTEXPR auto fill(OutputIt it, size_t n, const fill_t& fill)
+ -> OutputIt {
auto fill_size = fill.size();
- if (fill_size == 1) return detail::fill_n(it, n, fill[0]);
- auto data = fill.data();
- for (size_t i = 0; i < n; ++i)
- it = copy_str<Char>(data, data + fill_size, it);
+ if (fill_size == 1) return detail::fill_n(it, n, fill.template get<Char>());
+ if (const Char* data = fill.template data<Char>()) {
+ for (size_t i = 0; i < n; ++i) it = copy<Char>(data, data + fill_size, it);
+ }
return it;
}
// Writes the output of f, padded according to format specifications in specs.
// size: output size in code units.
// width: output display width in (terminal) column positions.
-template <align::type align = align::left, typename OutputIt, typename Char,
+template <typename Char, align::type align = align::left, typename OutputIt,
typename F>
-FMT_CONSTEXPR auto write_padded(OutputIt out,
- const basic_format_specs<Char>& specs,
+FMT_CONSTEXPR auto write_padded(OutputIt out, const format_specs& specs,
size_t size, size_t width, F&& f) -> OutputIt {
static_assert(align == align::left || align == align::right, "");
unsigned spec_width = to_unsigned(specs.width);
size_t left_padding = padding >> shifts[specs.align];
size_t right_padding = padding - left_padding;
auto it = reserve(out, size + padding * specs.fill.size());
- if (left_padding != 0) it = fill(it, left_padding, specs.fill);
+ if (left_padding != 0) it = fill<Char>(it, left_padding, specs.fill);
it = f(it);
- if (right_padding != 0) it = fill(it, right_padding, specs.fill);
+ if (right_padding != 0) it = fill<Char>(it, right_padding, specs.fill);
return base_iterator(out, it);
}
-template <align::type align = align::left, typename OutputIt, typename Char,
+template <typename Char, align::type align = align::left, typename OutputIt,
typename F>
-constexpr auto write_padded(OutputIt out, const basic_format_specs<Char>& specs,
+constexpr auto write_padded(OutputIt out, const format_specs& specs,
size_t size, F&& f) -> OutputIt {
- return write_padded<align>(out, specs, size, size, f);
+ return write_padded<Char, align>(out, specs, size, size, f);
}
-template <align::type align = align::left, typename Char, typename OutputIt>
+template <typename Char, align::type align = align::left, typename OutputIt>
FMT_CONSTEXPR auto write_bytes(OutputIt out, string_view bytes,
- const basic_format_specs<Char>& specs)
- -> OutputIt {
- return write_padded<align>(
+ const format_specs& specs = {}) -> OutputIt {
+ return write_padded<Char, align>(
out, specs, bytes.size(), [bytes](reserve_iterator<OutputIt> it) {
const char* data = bytes.data();
- return copy_str<Char>(data, data + bytes.size(), it);
+ return copy<Char>(data, data + bytes.size(), it);
});
}
template <typename Char, typename OutputIt, typename UIntPtr>
-auto write_ptr(OutputIt out, UIntPtr value,
- const basic_format_specs<Char>* specs) -> OutputIt {
+auto write_ptr(OutputIt out, UIntPtr value, const format_specs* specs)
+ -> OutputIt {
int num_digits = count_digits<4>(value);
auto size = to_unsigned(num_digits) + size_t(2);
auto write = [=](reserve_iterator<OutputIt> it) {
*it++ = static_cast<Char>('x');
return format_uint<4, Char>(it, value, num_digits);
};
- return specs ? write_padded<align::right>(out, *specs, size, write)
+ return specs ? write_padded<Char, align::right>(out, *specs, size, write)
: base_iterator(out, write(reserve(out, size)));
}
uint32_t cp;
};
-template <typename Char>
-using make_unsigned_char =
- typename conditional_t<std::is_integral<Char>::value,
- std::make_unsigned<Char>,
- type_identity<uint32_t>>::type;
-
template <typename Char>
auto find_escape(const Char* begin, const Char* end)
-> find_escape_result<Char> {
for (; begin != end; ++begin) {
- uint32_t cp = static_cast<make_unsigned_char<Char>>(*begin);
+ uint32_t cp = static_cast<unsigned_char<Char>>(*begin);
if (const_check(sizeof(Char) == 1) && cp >= 0x80) continue;
if (needs_escape(cp)) return {begin, begin + 1, cp};
}
inline auto find_escape(const char* begin, const char* end)
-> find_escape_result<char> {
- if (!is_utf8()) return find_escape<char>(begin, end);
+ if (!use_utf8()) return find_escape<char>(begin, end);
auto result = find_escape_result<char>{end, nullptr, 0};
for_each_codepoint(string_view(begin, to_unsigned(end - begin)),
[&](uint32_t cp, string_view sv) {
[] { \
/* Use the hidden visibility as a workaround for a GCC bug (#1973). */ \
/* Use a macro-like name to avoid shadowing warnings. */ \
- struct FMT_GCC_VISIBILITY_HIDDEN FMT_COMPILE_STRING : base { \
+ struct FMT_VISIBILITY("hidden") FMT_COMPILE_STRING : base { \
using char_type FMT_MAYBE_UNUSED = fmt::remove_cvref_t<decltype(s[0])>; \
FMT_MAYBE_UNUSED FMT_CONSTEXPR explicit \
operator fmt::basic_string_view<char_type>() const { \
}()
/**
- \rst
- Constructs a compile-time format string from a string literal *s*.
-
- **Example**::
-
- // A compile-time error because 'd' is an invalid specifier for strings.
- std::string s = fmt::format(FMT_STRING("{:d}"), "foo");
- \endrst
+ * Constructs a compile-time format string from a string literal `s`.
+ *
+ * **Example**:
+ *
+ * // A compile-time error because 'd' is an invalid specifier for strings.
+ * std::string s = fmt::format(FMT_STRING("{:d}"), "foo");
*/
#define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::detail::compile_string, )
Char buf[width];
fill_n(buf, width, static_cast<Char>('0'));
format_uint<4>(buf, cp, width);
- return copy_str<Char>(buf, buf + width, out);
+ return copy<Char>(buf, buf + width, out);
}
template <typename OutputIt, typename Char>
*out++ = static_cast<Char>('\\');
break;
default:
- if (is_utf8()) {
- if (escape.cp < 0x100) {
- return write_codepoint<2, Char>(out, 'x', escape.cp);
- }
- if (escape.cp < 0x10000) {
- return write_codepoint<4, Char>(out, 'u', escape.cp);
- }
- if (escape.cp < 0x110000) {
- return write_codepoint<8, Char>(out, 'U', escape.cp);
- }
- }
+ if (escape.cp < 0x100) return write_codepoint<2, Char>(out, 'x', escape.cp);
+ if (escape.cp < 0x10000)
+ return write_codepoint<4, Char>(out, 'u', escape.cp);
+ if (escape.cp < 0x110000)
+ return write_codepoint<8, Char>(out, 'U', escape.cp);
for (Char escape_char : basic_string_view<Char>(
escape.begin, to_unsigned(escape.end - escape.begin))) {
out = write_codepoint<2, Char>(out, 'x',
auto begin = str.begin(), end = str.end();
do {
auto escape = find_escape(begin, end);
- out = copy_str<Char>(begin, escape.begin, out);
+ out = copy<Char>(begin, escape.begin, out);
begin = escape.end;
if (!begin) break;
out = write_escaped_cp<OutputIt, Char>(out, escape);
template <typename Char, typename OutputIt>
auto write_escaped_char(OutputIt out, Char v) -> OutputIt {
+ Char v_array[1] = {v};
*out++ = static_cast<Char>('\'');
if ((needs_escape(static_cast<uint32_t>(v)) && v != static_cast<Char>('"')) ||
v == static_cast<Char>('\'')) {
- out = write_escaped_cp(
- out, find_escape_result<Char>{&v, &v + 1, static_cast<uint32_t>(v)});
+ out = write_escaped_cp(out,
+ find_escape_result<Char>{v_array, v_array + 1,
+ static_cast<uint32_t>(v)});
} else {
*out++ = v;
}
template <typename Char, typename OutputIt>
FMT_CONSTEXPR auto write_char(OutputIt out, Char value,
- const basic_format_specs<Char>& specs)
- -> OutputIt {
+ const format_specs& specs) -> OutputIt {
bool is_debug = specs.type == presentation_type::debug;
- return write_padded(out, specs, 1, [=](reserve_iterator<OutputIt> it) {
+ return write_padded<Char>(out, specs, 1, [=](reserve_iterator<OutputIt> it) {
if (is_debug) return write_escaped_char(it, value);
*it++ = value;
return it;
});
}
template <typename Char, typename OutputIt>
-FMT_CONSTEXPR auto write(OutputIt out, Char value,
- const basic_format_specs<Char>& specs,
+FMT_CONSTEXPR auto write(OutputIt out, Char value, const format_specs& specs,
locale_ref loc = {}) -> OutputIt {
+ // char is formatted as unsigned char for consistency across platforms.
+ using unsigned_type =
+ conditional_t<std::is_same<Char, char>::value, unsigned char, unsigned>;
return check_char_specs(specs)
- ? write_char(out, value, specs)
- : write(out, static_cast<int>(value), specs, loc);
+ ? write_char<Char>(out, value, specs)
+ : write<Char>(out, static_cast<unsigned_type>(value), specs, loc);
}
// Data for write_int that doesn't depend on output iterator type. It is used to
size_t padding;
FMT_CONSTEXPR write_int_data(int num_digits, unsigned prefix,
- const basic_format_specs<Char>& specs)
+ const format_specs& specs)
: size((prefix >> 24) + to_unsigned(num_digits)), padding(0) {
if (specs.align == align::numeric) {
auto width = to_unsigned(specs.width);
// <left-padding><prefix><numeric-padding><digits><right-padding>
// where <digits> are written by write_digits(it).
// prefix contains chars in three lower bytes and the size in the fourth byte.
-template <typename OutputIt, typename Char, typename W>
+template <typename Char, typename OutputIt, typename W>
FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, int num_digits,
unsigned prefix,
- const basic_format_specs<Char>& specs,
+ const format_specs& specs,
W write_digits) -> OutputIt {
// Slightly faster check for specs.width == 0 && specs.precision == -1.
if ((specs.width | (specs.precision + 1)) == 0) {
return base_iterator(out, write_digits(it));
}
auto data = write_int_data<Char>(num_digits, prefix, specs);
- return write_padded<align::right>(
+ return write_padded<Char, align::right>(
out, specs, data.size, [=](reserve_iterator<OutputIt> it) {
for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8)
*it++ = static_cast<Char>(p & 0xff);
template <typename Char> class digit_grouping {
private:
- thousands_sep_result<Char> sep_;
+ std::string grouping_;
+ std::basic_string<Char> thousands_sep_;
struct next_state {
std::string::const_iterator group;
int pos;
};
- next_state initial_state() const { return {sep_.grouping.begin(), 0}; }
+ auto initial_state() const -> next_state { return {grouping_.begin(), 0}; }
// Returns the next digit group separator position.
- int next(next_state& state) const {
- if (!sep_.thousands_sep) return max_value<int>();
- if (state.group == sep_.grouping.end())
- return state.pos += sep_.grouping.back();
+ auto next(next_state& state) const -> int {
+ if (thousands_sep_.empty()) return max_value<int>();
+ if (state.group == grouping_.end()) return state.pos += grouping_.back();
if (*state.group <= 0 || *state.group == max_value<char>())
return max_value<int>();
state.pos += *state.group++;
public:
explicit digit_grouping(locale_ref loc, bool localized = true) {
- if (localized)
- sep_ = thousands_sep<Char>(loc);
- else
- sep_.thousands_sep = Char();
+ if (!localized) return;
+ auto sep = thousands_sep<Char>(loc);
+ grouping_ = sep.grouping;
+ if (sep.thousands_sep) thousands_sep_.assign(1, sep.thousands_sep);
}
- explicit digit_grouping(thousands_sep_result<Char> sep) : sep_(sep) {}
+ digit_grouping(std::string grouping, std::basic_string<Char> sep)
+ : grouping_(std::move(grouping)), thousands_sep_(std::move(sep)) {}
- Char separator() const { return sep_.thousands_sep; }
+ auto has_separator() const -> bool { return !thousands_sep_.empty(); }
- int count_separators(int num_digits) const {
+ auto count_separators(int num_digits) const -> int {
int count = 0;
auto state = initial_state();
while (num_digits > next(state)) ++count;
// Applies grouping to digits and write the output to out.
template <typename Out, typename C>
- Out apply(Out out, basic_string_view<C> digits) const {
+ auto apply(Out out, basic_string_view<C> digits) const -> Out {
auto num_digits = static_cast<int>(digits.size());
auto separators = basic_memory_buffer<int>();
separators.push_back(0);
for (int i = 0, sep_index = static_cast<int>(separators.size() - 1);
i < num_digits; ++i) {
if (num_digits - i == separators[sep_index]) {
- *out++ = separator();
+ out = copy<Char>(thousands_sep_.data(),
+ thousands_sep_.data() + thousands_sep_.size(), out);
--sep_index;
}
*out++ = static_cast<Char>(digits[to_unsigned(i)]);
}
};
-template <typename OutputIt, typename UInt, typename Char>
-auto write_int_localized(OutputIt out, UInt value, unsigned prefix,
- const basic_format_specs<Char>& specs,
- const digit_grouping<Char>& grouping) -> OutputIt {
- static_assert(std::is_same<uint64_or_128_t<UInt>, UInt>::value, "");
- int num_digits = count_digits(value);
- char digits[40];
- format_decimal(digits, value, num_digits);
- unsigned size = to_unsigned((prefix != 0 ? 1 : 0) + num_digits +
- grouping.count_separators(num_digits));
- return write_padded<align::right>(
- out, specs, size, size, [&](reserve_iterator<OutputIt> it) {
- if (prefix != 0) {
- char sign = static_cast<char>(prefix);
- *it++ = static_cast<Char>(sign);
- }
- return grouping.apply(it, string_view(digits, to_unsigned(num_digits)));
- });
-}
-
-template <typename OutputIt, typename UInt, typename Char>
-auto write_int_localized(OutputIt& out, UInt value, unsigned prefix,
- const basic_format_specs<Char>& specs, locale_ref loc)
- -> bool {
- auto grouping = digit_grouping<Char>(loc);
- out = write_int_localized(out, value, prefix, specs, grouping);
- return true;
-}
-
FMT_CONSTEXPR inline void prefix_append(unsigned& prefix, unsigned value) {
prefix |= prefix != 0 ? value << 8 : value;
prefix += (1u + (value > 0xff ? 1 : 0)) << 24;
}
-template <typename UInt> struct write_int_arg {
- UInt abs_value;
- unsigned prefix;
-};
-
-template <typename T>
-FMT_CONSTEXPR auto make_write_int_arg(T value, sign_t sign)
- -> write_int_arg<uint32_or_64_or_128_t<T>> {
- auto prefix = 0u;
+// Writes a decimal integer with digit grouping.
+template <typename OutputIt, typename UInt, typename Char>
+auto write_int(OutputIt out, UInt value, unsigned prefix,
+ const format_specs& specs, const digit_grouping<Char>& grouping)
+ -> OutputIt {
+ static_assert(std::is_same<uint64_or_128_t<UInt>, UInt>::value, "");
+ int num_digits = 0;
+ auto buffer = memory_buffer();
+ switch (specs.type) {
+ default:
+ FMT_ASSERT(false, "");
+ FMT_FALLTHROUGH;
+ case presentation_type::none:
+ case presentation_type::dec:
+ num_digits = count_digits(value);
+ format_decimal<char>(appender(buffer), value, num_digits);
+ break;
+ case presentation_type::hex:
+ if (specs.alt)
+ prefix_append(prefix, unsigned(specs.upper ? 'X' : 'x') << 8 | '0');
+ num_digits = count_digits<4>(value);
+ format_uint<4, char>(appender(buffer), value, num_digits, specs.upper);
+ break;
+ case presentation_type::oct:
+ num_digits = count_digits<3>(value);
+ // Octal prefix '0' is counted as a digit, so only add it if precision
+ // is not greater than the number of digits.
+ if (specs.alt && specs.precision <= num_digits && value != 0)
+ prefix_append(prefix, '0');
+ format_uint<3, char>(appender(buffer), value, num_digits);
+ break;
+ case presentation_type::bin:
+ if (specs.alt)
+ prefix_append(prefix, unsigned(specs.upper ? 'B' : 'b') << 8 | '0');
+ num_digits = count_digits<1>(value);
+ format_uint<1, char>(appender(buffer), value, num_digits);
+ break;
+ case presentation_type::chr:
+ return write_char<Char>(out, static_cast<Char>(value), specs);
+ }
+
+ unsigned size = (prefix != 0 ? prefix >> 24 : 0) + to_unsigned(num_digits) +
+ to_unsigned(grouping.count_separators(num_digits));
+ return write_padded<Char, align::right>(
+ out, specs, size, size, [&](reserve_iterator<OutputIt> it) {
+ for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8)
+ *it++ = static_cast<Char>(p & 0xff);
+ return grouping.apply(it, string_view(buffer.data(), buffer.size()));
+ });
+}
+
+// Writes a localized value.
+FMT_API auto write_loc(appender out, loc_value value, const format_specs& specs,
+ locale_ref loc) -> bool;
+template <typename OutputIt>
+inline auto write_loc(OutputIt, loc_value, const format_specs&, locale_ref)
+ -> bool {
+ return false;
+}
+
+template <typename UInt> struct write_int_arg {
+ UInt abs_value;
+ unsigned prefix;
+};
+
+template <typename T>
+FMT_CONSTEXPR auto make_write_int_arg(T value, sign_t sign)
+ -> write_int_arg<uint32_or_64_or_128_t<T>> {
+ auto prefix = 0u;
auto abs_value = static_cast<uint32_or_64_or_128_t<T>>(value);
if (is_negative(value)) {
prefix = 0x01000000 | '-';
return {abs_value, prefix};
}
+template <typename Char = char> struct loc_writer {
+ basic_appender<Char> out;
+ const format_specs& specs;
+ std::basic_string<Char> sep;
+ std::string grouping;
+ std::basic_string<Char> decimal_point;
+
+ template <typename T, FMT_ENABLE_IF(is_integer<T>::value)>
+ auto operator()(T value) -> bool {
+ auto arg = make_write_int_arg(value, specs.sign);
+ write_int(out, static_cast<uint64_or_128_t<T>>(arg.abs_value), arg.prefix,
+ specs, digit_grouping<Char>(grouping, sep));
+ return true;
+ }
+
+ template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)>
+ auto operator()(T) -> bool {
+ return false;
+ }
+};
+
template <typename Char, typename OutputIt, typename T>
FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, write_int_arg<T> arg,
- const basic_format_specs<Char>& specs,
- locale_ref loc) -> OutputIt {
+ const format_specs& specs, locale_ref)
+ -> OutputIt {
static_assert(std::is_same<T, uint32_or_64_or_128_t<T>>::value, "");
auto abs_value = arg.abs_value;
auto prefix = arg.prefix;
switch (specs.type) {
+ default:
+ FMT_ASSERT(false, "");
+ FMT_FALLTHROUGH;
case presentation_type::none:
case presentation_type::dec: {
- if (specs.localized &&
- write_int_localized(out, static_cast<uint64_or_128_t<T>>(abs_value),
- prefix, specs, loc)) {
- return out;
- }
- auto num_digits = count_digits(abs_value);
- return write_int(
+ int num_digits = count_digits(abs_value);
+ return write_int<Char>(
out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) {
return format_decimal<Char>(it, abs_value, num_digits).end;
});
}
- case presentation_type::hex_lower:
- case presentation_type::hex_upper: {
- bool upper = specs.type == presentation_type::hex_upper;
+ case presentation_type::hex: {
if (specs.alt)
- prefix_append(prefix, unsigned(upper ? 'X' : 'x') << 8 | '0');
+ prefix_append(prefix, unsigned(specs.upper ? 'X' : 'x') << 8 | '0');
int num_digits = count_digits<4>(abs_value);
- return write_int(
+ return write_int<Char>(
out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) {
- return format_uint<4, Char>(it, abs_value, num_digits, upper);
+ return format_uint<4, Char>(it, abs_value, num_digits, specs.upper);
});
}
- case presentation_type::bin_lower:
- case presentation_type::bin_upper: {
- bool upper = specs.type == presentation_type::bin_upper;
- if (specs.alt)
- prefix_append(prefix, unsigned(upper ? 'B' : 'b') << 8 | '0');
- int num_digits = count_digits<1>(abs_value);
- return write_int(out, num_digits, prefix, specs,
- [=](reserve_iterator<OutputIt> it) {
- return format_uint<1, Char>(it, abs_value, num_digits);
- });
- }
case presentation_type::oct: {
int num_digits = count_digits<3>(abs_value);
// Octal prefix '0' is counted as a digit, so only add it if precision
// is not greater than the number of digits.
if (specs.alt && specs.precision <= num_digits && abs_value != 0)
prefix_append(prefix, '0');
- return write_int(out, num_digits, prefix, specs,
- [=](reserve_iterator<OutputIt> it) {
- return format_uint<3, Char>(it, abs_value, num_digits);
- });
+ return write_int<Char>(
+ out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) {
+ return format_uint<3, Char>(it, abs_value, num_digits);
+ });
+ }
+ case presentation_type::bin: {
+ if (specs.alt)
+ prefix_append(prefix, unsigned(specs.upper ? 'B' : 'b') << 8 | '0');
+ int num_digits = count_digits<1>(abs_value);
+ return write_int<Char>(
+ out, num_digits, prefix, specs, [=](reserve_iterator<OutputIt> it) {
+ return format_uint<1, Char>(it, abs_value, num_digits);
+ });
}
case presentation_type::chr:
- return write_char(out, static_cast<Char>(abs_value), specs);
- default:
- throw_format_error("invalid type specifier");
+ return write_char<Char>(out, static_cast<Char>(abs_value), specs);
}
- return out;
}
template <typename Char, typename OutputIt, typename T>
-FMT_CONSTEXPR FMT_NOINLINE auto write_int_noinline(
- OutputIt out, write_int_arg<T> arg, const basic_format_specs<Char>& specs,
- locale_ref loc) -> OutputIt {
- return write_int(out, arg, specs, loc);
+FMT_CONSTEXPR FMT_NOINLINE auto write_int_noinline(OutputIt out,
+ write_int_arg<T> arg,
+ const format_specs& specs,
+ locale_ref loc) -> OutputIt {
+ return write_int<Char>(out, arg, specs, loc);
}
-template <typename Char, typename OutputIt, typename T,
+template <typename Char, typename T,
FMT_ENABLE_IF(is_integral<T>::value &&
!std::is_same<T, bool>::value &&
- std::is_same<OutputIt, buffer_appender<Char>>::value)>
-FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value,
- const basic_format_specs<Char>& specs,
- locale_ref loc) -> OutputIt {
- return write_int_noinline(out, make_write_int_arg(value, specs.sign), specs,
- loc);
+ !std::is_same<T, Char>::value)>
+FMT_CONSTEXPR FMT_INLINE auto write(basic_appender<Char> out, T value,
+ const format_specs& specs, locale_ref loc)
+ -> basic_appender<Char> {
+ if (specs.localized && write_loc(out, value, specs, loc)) return out;
+ return write_int_noinline<Char>(out, make_write_int_arg(value, specs.sign),
+ specs, loc);
}
// An inlined version of write used in format string compilation.
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(is_integral<T>::value &&
!std::is_same<T, bool>::value &&
- !std::is_same<OutputIt, buffer_appender<Char>>::value)>
+ !std::is_same<T, Char>::value &&
+ !std::is_same<OutputIt, basic_appender<Char>>::value)>
FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value,
- const basic_format_specs<Char>& specs,
- locale_ref loc) -> OutputIt {
- return write_int(out, make_write_int_arg(value, specs.sign), specs, loc);
+ const format_specs& specs, locale_ref loc)
+ -> OutputIt {
+ if (specs.localized && write_loc(out, value, specs, loc)) return out;
+ return write_int<Char>(out, make_write_int_arg(value, specs.sign), specs,
+ loc);
}
// An output iterator that counts the number of objects written to it and
FMT_CONSTEXPR counting_iterator() : count_(0) {}
- FMT_CONSTEXPR size_t count() const { return count_; }
+ FMT_CONSTEXPR auto count() const -> size_t { return count_; }
- FMT_CONSTEXPR counting_iterator& operator++() {
+ FMT_CONSTEXPR auto operator++() -> counting_iterator& {
++count_;
return *this;
}
- FMT_CONSTEXPR counting_iterator operator++(int) {
+ FMT_CONSTEXPR auto operator++(int) -> counting_iterator {
auto it = *this;
++*this;
return it;
}
- FMT_CONSTEXPR friend counting_iterator operator+(counting_iterator it,
- difference_type n) {
+ FMT_CONSTEXPR friend auto operator+(counting_iterator it, difference_type n)
+ -> counting_iterator {
it.count_ += static_cast<size_t>(n);
return it;
}
- FMT_CONSTEXPR value_type operator*() const { return {}; }
+ FMT_CONSTEXPR auto operator*() const -> value_type { return {}; }
};
template <typename Char, typename OutputIt>
FMT_CONSTEXPR auto write(OutputIt out, basic_string_view<Char> s,
- const basic_format_specs<Char>& specs) -> OutputIt {
+ const format_specs& specs) -> OutputIt {
auto data = s.data();
auto size = s.size();
if (specs.precision >= 0 && to_unsigned(specs.precision) < size)
size = code_point_index(s, to_unsigned(specs.precision));
bool is_debug = specs.type == presentation_type::debug;
size_t width = 0;
+
+ if (is_debug) size = write_escaped_string(counting_iterator{}, s).count();
+
if (specs.width != 0) {
if (is_debug)
- width = write_escaped_string(counting_iterator{}, s).count();
+ width = size;
else
width = compute_width(basic_string_view<Char>(data, size));
}
- return write_padded(out, specs, size, width,
- [=](reserve_iterator<OutputIt> it) {
- if (is_debug) return write_escaped_string(it, s);
- return copy_str<Char>(data, data + size, it);
- });
+ return write_padded<Char>(out, specs, size, width,
+ [=](reserve_iterator<OutputIt> it) {
+ if (is_debug) return write_escaped_string(it, s);
+ return copy<Char>(data, data + size, it);
+ });
}
template <typename Char, typename OutputIt>
FMT_CONSTEXPR auto write(OutputIt out,
basic_string_view<type_identity_t<Char>> s,
- const basic_format_specs<Char>& specs, locale_ref)
- -> OutputIt {
- check_string_type_spec(specs.type);
- return write(out, s, specs);
+ const format_specs& specs, locale_ref) -> OutputIt {
+ return write<Char>(out, s, specs);
}
template <typename Char, typename OutputIt>
-FMT_CONSTEXPR auto write(OutputIt out, const Char* s,
- const basic_format_specs<Char>& specs, locale_ref)
- -> OutputIt {
- return check_cstring_type_spec(specs.type)
- ? write(out, basic_string_view<Char>(s), specs, {})
- : write_ptr<Char>(out, bit_cast<uintptr_t>(s), &specs);
+FMT_CONSTEXPR auto write(OutputIt out, const Char* s, const format_specs& specs,
+ locale_ref) -> OutputIt {
+ if (specs.type == presentation_type::pointer)
+ return write_ptr<Char>(out, bit_cast<uintptr_t>(s), &specs);
+ if (!s) report_error("string pointer is null");
+ return write<Char>(out, basic_string_view<Char>(s), specs, {});
}
template <typename Char, typename OutputIt, typename T,
if (negative) abs_value = ~abs_value + 1;
int num_digits = count_digits(abs_value);
auto size = (negative ? 1 : 0) + static_cast<size_t>(num_digits);
- auto it = reserve(out, size);
- if (auto ptr = to_pointer<Char>(it, size)) {
+ if (auto ptr = to_pointer<Char>(out, size)) {
if (negative) *ptr++ = static_cast<Char>('-');
format_decimal<Char>(ptr, abs_value, num_digits);
return out;
}
- if (negative) *it++ = static_cast<Char>('-');
- it = format_decimal<Char>(it, abs_value, num_digits).end;
- return base_iterator(out, it);
+ if (negative) *out++ = static_cast<Char>('-');
+ return format_decimal<Char>(out, abs_value, num_digits).end;
+}
+
+// DEPRECATED!
+template <typename Char>
+FMT_CONSTEXPR auto parse_align(const Char* begin, const Char* end,
+ format_specs& specs) -> const Char* {
+ FMT_ASSERT(begin != end, "");
+ auto align = align::none;
+ auto p = begin + code_point_length(begin);
+ if (end - p <= 0) p = begin;
+ for (;;) {
+ switch (to_ascii(*p)) {
+ case '<':
+ align = align::left;
+ break;
+ case '>':
+ align = align::right;
+ break;
+ case '^':
+ align = align::center;
+ break;
+ }
+ if (align != align::none) {
+ if (p != begin) {
+ auto c = *begin;
+ if (c == '}') return begin;
+ if (c == '{') {
+ report_error("invalid fill character '{'");
+ return begin;
+ }
+ specs.fill = basic_string_view<Char>(begin, to_unsigned(p - begin));
+ begin = p + 1;
+ } else {
+ ++begin;
+ }
+ break;
+ } else if (p == begin) {
+ break;
+ }
+ p = begin;
+ }
+ specs.align = align;
+ return begin;
+}
+
+// A floating-point presentation format.
+enum class float_format : unsigned char {
+ general, // General: exponent notation or fixed point based on magnitude.
+ exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3.
+ fixed // Fixed point with the default precision of 6, e.g. 0.0012.
+};
+
+struct float_specs {
+ int precision;
+ float_format format : 8;
+ sign_t sign : 8;
+ bool locale : 1;
+ bool binary32 : 1;
+ bool showpoint : 1;
+};
+
+// DEPRECATED!
+FMT_CONSTEXPR inline auto parse_float_type_spec(const format_specs& specs)
+ -> float_specs {
+ auto result = float_specs();
+ result.showpoint = specs.alt;
+ result.locale = specs.localized;
+ switch (specs.type) {
+ default:
+ FMT_FALLTHROUGH;
+ case presentation_type::none:
+ result.format = float_format::general;
+ break;
+ case presentation_type::exp:
+ result.format = float_format::exp;
+ result.showpoint |= specs.precision != 0;
+ break;
+ case presentation_type::fixed:
+ result.format = float_format::fixed;
+ result.showpoint |= specs.precision != 0;
+ break;
+ case presentation_type::general:
+ result.format = float_format::general;
+ break;
+ }
+ return result;
}
template <typename Char, typename OutputIt>
FMT_CONSTEXPR20 auto write_nonfinite(OutputIt out, bool isnan,
- basic_format_specs<Char> specs,
- const float_specs& fspecs) -> OutputIt {
+ format_specs specs, sign_t sign)
+ -> OutputIt {
auto str =
- isnan ? (fspecs.upper ? "NAN" : "nan") : (fspecs.upper ? "INF" : "inf");
+ isnan ? (specs.upper ? "NAN" : "nan") : (specs.upper ? "INF" : "inf");
constexpr size_t str_size = 3;
- auto sign = fspecs.sign;
auto size = str_size + (sign ? 1 : 0);
// Replace '0'-padding with space for non-finite values.
const bool is_zero_fill =
- specs.fill.size() == 1 && *specs.fill.data() == static_cast<Char>('0');
- if (is_zero_fill) specs.fill[0] = static_cast<Char>(' ');
- return write_padded(out, specs, size, [=](reserve_iterator<OutputIt> it) {
- if (sign) *it++ = detail::sign<Char>(sign);
- return copy_str<Char>(str, str + str_size, it);
- });
+ specs.fill.size() == 1 && specs.fill.template get<Char>() == '0';
+ if (is_zero_fill) specs.fill = ' ';
+ return write_padded<Char>(out, specs, size,
+ [=](reserve_iterator<OutputIt> it) {
+ if (sign) *it++ = detail::sign<Char>(sign);
+ return copy<Char>(str, str + str_size, it);
+ });
}
// A decimal floating-point number significand * pow(10, exp).
template <typename Char, typename OutputIt>
constexpr auto write_significand(OutputIt out, const char* significand,
int significand_size) -> OutputIt {
- return copy_str<Char>(significand, significand + significand_size, out);
+ return copy<Char>(significand, significand + significand_size, out);
}
template <typename Char, typename OutputIt, typename UInt>
inline auto write_significand(OutputIt out, UInt significand,
FMT_CONSTEXPR20 auto write_significand(OutputIt out, T significand,
int significand_size, int exponent,
const Grouping& grouping) -> OutputIt {
- if (!grouping.separator()) {
+ if (!grouping.has_separator()) {
out = write_significand<Char>(out, significand, significand_size);
return detail::fill_n(out, exponent, static_cast<Char>('0'));
}
Char buffer[digits10<UInt>() + 2];
auto end = write_significand(buffer, significand, significand_size,
integral_size, decimal_point);
- return detail::copy_str_noinline<Char>(buffer, end, out);
+ return detail::copy_noinline<Char>(buffer, end, out);
}
template <typename OutputIt, typename Char>
FMT_CONSTEXPR auto write_significand(OutputIt out, const char* significand,
int significand_size, int integral_size,
Char decimal_point) -> OutputIt {
- out = detail::copy_str_noinline<Char>(significand,
- significand + integral_size, out);
+ out = detail::copy_noinline<Char>(significand, significand + integral_size,
+ out);
if (!decimal_point) return out;
*out++ = decimal_point;
- return detail::copy_str_noinline<Char>(significand + integral_size,
- significand + significand_size, out);
+ return detail::copy_noinline<Char>(significand + integral_size,
+ significand + significand_size, out);
}
template <typename OutputIt, typename Char, typename T, typename Grouping>
int significand_size, int integral_size,
Char decimal_point,
const Grouping& grouping) -> OutputIt {
- if (!grouping.separator()) {
+ if (!grouping.has_separator()) {
return write_significand(out, significand, significand_size, integral_size,
decimal_point);
}
auto buffer = basic_memory_buffer<Char>();
- write_significand(buffer_appender<Char>(buffer), significand,
- significand_size, integral_size, decimal_point);
+ write_significand(basic_appender<Char>(buffer), significand, significand_size,
+ integral_size, decimal_point);
grouping.apply(
out, basic_string_view<Char>(buffer.data(), to_unsigned(integral_size)));
- return detail::copy_str_noinline<Char>(buffer.data() + integral_size,
- buffer.end(), out);
+ return detail::copy_noinline<Char>(buffer.data() + integral_size,
+ buffer.end(), out);
}
-template <typename OutputIt, typename DecimalFP, typename Char,
+template <typename Char, typename OutputIt, typename DecimalFP,
typename Grouping = digit_grouping<Char>>
FMT_CONSTEXPR20 auto do_write_float(OutputIt out, const DecimalFP& f,
- const basic_format_specs<Char>& specs,
+ const format_specs& specs,
float_specs fspecs, locale_ref loc)
-> OutputIt {
auto significand = f.significand;
if (abs_output_exp >= 100) exp_digits = abs_output_exp >= 1000 ? 4 : 3;
size += to_unsigned((decimal_point ? 1 : 0) + 2 + exp_digits);
- char exp_char = fspecs.upper ? 'E' : 'e';
+ char exp_char = specs.upper ? 'E' : 'e';
auto write = [=](iterator it) {
if (sign) *it++ = detail::sign<Char>(sign);
// Insert a decimal point after the first digit and add an exponent.
*it++ = static_cast<Char>(exp_char);
return write_exponent<Char>(output_exp, it);
};
- return specs.width > 0 ? write_padded<align::right>(out, specs, size, write)
- : base_iterator(out, write(reserve(out, size)));
+ return specs.width > 0
+ ? write_padded<Char, align::right>(out, specs, size, write)
+ : base_iterator(out, write(reserve(out, size)));
}
int exp = f.exponent + significand_size;
abort_fuzzing_if(num_zeros > 5000);
if (fspecs.showpoint) {
++size;
- if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 1;
+ if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 0;
if (num_zeros > 0) size += to_unsigned(num_zeros);
}
auto grouping = Grouping(loc, fspecs.locale);
size += to_unsigned(grouping.count_separators(exp));
- return write_padded<align::right>(out, specs, size, [&](iterator it) {
+ return write_padded<Char, align::right>(out, specs, size, [&](iterator it) {
if (sign) *it++ = detail::sign<Char>(sign);
it = write_significand<Char>(it, significand, significand_size,
f.exponent, grouping);
int num_zeros = fspecs.showpoint ? fspecs.precision - significand_size : 0;
size += 1 + to_unsigned(num_zeros > 0 ? num_zeros : 0);
auto grouping = Grouping(loc, fspecs.locale);
- size += to_unsigned(grouping.count_separators(significand_size));
- return write_padded<align::right>(out, specs, size, [&](iterator it) {
+ size += to_unsigned(grouping.count_separators(exp));
+ return write_padded<Char, align::right>(out, specs, size, [&](iterator it) {
if (sign) *it++ = detail::sign<Char>(sign);
it = write_significand(it, significand, significand_size, exp,
decimal_point, grouping);
}
bool pointy = num_zeros != 0 || significand_size != 0 || fspecs.showpoint;
size += 1 + (pointy ? 1 : 0) + to_unsigned(num_zeros);
- return write_padded<align::right>(out, specs, size, [&](iterator it) {
+ return write_padded<Char, align::right>(out, specs, size, [&](iterator it) {
if (sign) *it++ = detail::sign<Char>(sign);
*it++ = zero;
if (!pointy) return it;
public:
constexpr fallback_digit_grouping(locale_ref, bool) {}
- constexpr Char separator() const { return Char(); }
+ constexpr auto has_separator() const -> bool { return false; }
- constexpr int count_separators(int) const { return 0; }
+ constexpr auto count_separators(int) const -> int { return 0; }
template <typename Out, typename C>
- constexpr Out apply(Out out, basic_string_view<C>) const {
+ constexpr auto apply(Out out, basic_string_view<C>) const -> Out {
return out;
}
};
-template <typename OutputIt, typename DecimalFP, typename Char>
+template <typename Char, typename OutputIt, typename DecimalFP>
FMT_CONSTEXPR20 auto write_float(OutputIt out, const DecimalFP& f,
- const basic_format_specs<Char>& specs,
- float_specs fspecs, locale_ref loc)
- -> OutputIt {
+ const format_specs& specs, float_specs fspecs,
+ locale_ref loc) -> OutputIt {
if (is_constant_evaluated()) {
- return do_write_float<OutputIt, DecimalFP, Char,
+ return do_write_float<Char, OutputIt, DecimalFP,
fallback_digit_grouping<Char>>(out, f, specs, fspecs,
loc);
} else {
- return do_write_float(out, f, specs, fspecs, loc);
+ return do_write_float<Char>(out, f, specs, fspecs, loc);
}
}
-template <typename T> constexpr bool isnan(T value) {
- return !(value >= value); // std::isnan doesn't support __float128.
+template <typename T> constexpr auto isnan(T value) -> bool {
+ return value != value; // std::isnan doesn't support __float128.
}
template <typename T, typename Enable = void>
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value&&
has_isfinite<T>::value)>
-FMT_CONSTEXPR20 bool isfinite(T value) {
+FMT_CONSTEXPR20 auto isfinite(T value) -> bool {
constexpr T inf = T(std::numeric_limits<double>::infinity());
if (is_constant_evaluated())
- return !detail::isnan(value) && value != inf && value != -inf;
+ return !detail::isnan(value) && value < inf && value > -inf;
return std::isfinite(value);
}
template <typename T, FMT_ENABLE_IF(!has_isfinite<T>::value)>
-FMT_CONSTEXPR bool isfinite(T value) {
+FMT_CONSTEXPR auto isfinite(T value) -> bool {
T inf = T(std::numeric_limits<double>::infinity());
// std::isfinite doesn't support __float128.
- return !detail::isnan(value) && value != inf && value != -inf;
+ return !detail::isnan(value) && value < inf && value > -inf;
}
template <typename T, FMT_ENABLE_IF(is_floating_point<T>::value)>
return std::signbit(static_cast<double>(value));
}
-enum class round_direction { unknown, up, down };
-
-// Given the divisor (normally a power of 10), the remainder = v % divisor for
-// some number v and the error, returns whether v should be rounded up, down, or
-// whether the rounding direction can't be determined due to error.
-// error should be less than divisor / 2.
-FMT_CONSTEXPR inline round_direction get_round_direction(uint64_t divisor,
- uint64_t remainder,
- uint64_t error) {
- FMT_ASSERT(remainder < divisor, ""); // divisor - remainder won't overflow.
- FMT_ASSERT(error < divisor, ""); // divisor - error won't overflow.
- FMT_ASSERT(error < divisor - error, ""); // error * 2 won't overflow.
- // Round down if (remainder + error) * 2 <= divisor.
- if (remainder <= divisor - remainder && error * 2 <= divisor - remainder * 2)
- return round_direction::down;
- // Round up if (remainder - error) * 2 >= divisor.
- if (remainder >= error &&
- remainder - error >= divisor - (remainder - error)) {
- return round_direction::up;
- }
- return round_direction::unknown;
-}
-
-namespace digits {
-enum result {
- more, // Generate more digits.
- done, // Done generating digits.
- error // Digit generation cancelled due to an error.
-};
-}
-
-struct gen_digits_handler {
- char* buf;
- int size;
- int precision;
- int exp10;
- bool fixed;
-
- FMT_CONSTEXPR digits::result on_digit(char digit, uint64_t divisor,
- uint64_t remainder, uint64_t error,
- bool integral) {
- FMT_ASSERT(remainder < divisor, "");
- buf[size++] = digit;
- if (!integral && error >= remainder) return digits::error;
- if (size < precision) return digits::more;
- if (!integral) {
- // Check if error * 2 < divisor with overflow prevention.
- // The check is not needed for the integral part because error = 1
- // and divisor > (1 << 32) there.
- if (error >= divisor || error >= divisor - error) return digits::error;
- } else {
- FMT_ASSERT(error == 1 && divisor > 2, "");
- }
- auto dir = get_round_direction(divisor, remainder, error);
- if (dir != round_direction::up)
- return dir == round_direction::down ? digits::done : digits::error;
- ++buf[size - 1];
- for (int i = size - 1; i > 0 && buf[i] > '9'; --i) {
- buf[i] = '0';
- ++buf[i - 1];
- }
- if (buf[0] > '9') {
- buf[0] = '1';
- if (fixed)
- buf[size++] = '0';
- else
- ++exp10;
- }
- return digits::done;
- }
-};
-
inline FMT_CONSTEXPR20 void adjust_precision(int& precision, int exp10) {
// Adjust fixed precision by exponent because it is relative to decimal
// point.
precision += exp10;
}
-// Generates output using the Grisu digit-gen algorithm.
-// error: the size of the region (lower, upper) outside of which numbers
-// definitely do not round to value (Delta in Grisu3).
-FMT_INLINE FMT_CONSTEXPR20 auto grisu_gen_digits(fp value, uint64_t error,
- int& exp,
- gen_digits_handler& handler)
- -> digits::result {
- const fp one(1ULL << -value.e, value.e);
- // The integral part of scaled value (p1 in Grisu) = value / one. It cannot be
- // zero because it contains a product of two 64-bit numbers with MSB set (due
- // to normalization) - 1, shifted right by at most 60 bits.
- auto integral = static_cast<uint32_t>(value.f >> -one.e);
- FMT_ASSERT(integral != 0, "");
- FMT_ASSERT(integral == value.f >> -one.e, "");
- // The fractional part of scaled value (p2 in Grisu) c = value % one.
- uint64_t fractional = value.f & (one.f - 1);
- exp = count_digits(integral); // kappa in Grisu.
- // Non-fixed formats require at least one digit and no precision adjustment.
- if (handler.fixed) {
- adjust_precision(handler.precision, exp + handler.exp10);
- // Check if precision is satisfied just by leading zeros, e.g.
- // format("{:.2f}", 0.001) gives "0.00" without generating any digits.
- if (handler.precision <= 0) {
- if (handler.precision < 0) return digits::done;
- // Divide by 10 to prevent overflow.
- uint64_t divisor = data::power_of_10_64[exp - 1] << -one.e;
- auto dir = get_round_direction(divisor, value.f / 10, error * 10);
- if (dir == round_direction::unknown) return digits::error;
- handler.buf[handler.size++] = dir == round_direction::up ? '1' : '0';
- return digits::done;
- }
- }
- // Generate digits for the integral part. This can produce up to 10 digits.
- do {
- uint32_t digit = 0;
- auto divmod_integral = [&](uint32_t divisor) {
- digit = integral / divisor;
- integral %= divisor;
- };
- // This optimization by Milo Yip reduces the number of integer divisions by
- // one per iteration.
- switch (exp) {
- case 10:
- divmod_integral(1000000000);
- break;
- case 9:
- divmod_integral(100000000);
- break;
- case 8:
- divmod_integral(10000000);
- break;
- case 7:
- divmod_integral(1000000);
- break;
- case 6:
- divmod_integral(100000);
- break;
- case 5:
- divmod_integral(10000);
- break;
- case 4:
- divmod_integral(1000);
- break;
- case 3:
- divmod_integral(100);
- break;
- case 2:
- divmod_integral(10);
- break;
- case 1:
- digit = integral;
- integral = 0;
- break;
- default:
- FMT_ASSERT(false, "invalid number of digits");
- }
- --exp;
- auto remainder = (static_cast<uint64_t>(integral) << -one.e) + fractional;
- auto result = handler.on_digit(static_cast<char>('0' + digit),
- data::power_of_10_64[exp] << -one.e,
- remainder, error, true);
- if (result != digits::more) return result;
- } while (exp > 0);
- // Generate digits for the fractional part.
- for (;;) {
- fractional *= 10;
- error *= 10;
- char digit = static_cast<char>('0' + (fractional >> -one.e));
- fractional &= one.f - 1;
- --exp;
- auto result = handler.on_digit(digit, one.f, fractional, error, false);
- if (result != digits::more) return result;
- }
-}
-
class bigint {
private:
// A bigint is stored as an array of bigits (big digits), with bigit at index
basic_memory_buffer<bigit, bigits_capacity> bigits_;
int exp_;
- FMT_CONSTEXPR20 bigit operator[](int index) const {
+ FMT_CONSTEXPR20 auto operator[](int index) const -> bigit {
return bigits_[to_unsigned(index)];
}
- FMT_CONSTEXPR20 bigit& operator[](int index) {
+ FMT_CONSTEXPR20 auto operator[](int index) -> bigit& {
return bigits_[to_unsigned(index)];
}
auto size = other.bigits_.size();
bigits_.resize(size);
auto data = other.bigits_.data();
- std::copy(data, data + size, make_checked(bigits_.data(), size));
+ copy<bigit>(data, data + size, bigits_.data());
exp_ = other.exp_;
}
assign(uint64_or_128_t<Int>(n));
}
- FMT_CONSTEXPR20 int num_bigits() const {
+ FMT_CONSTEXPR20 auto num_bigits() const -> int {
return static_cast<int>(bigits_.size()) + exp_;
}
- FMT_NOINLINE FMT_CONSTEXPR20 bigint& operator<<=(int shift) {
+ FMT_NOINLINE FMT_CONSTEXPR20 auto operator<<=(int shift) -> bigint& {
FMT_ASSERT(shift >= 0, "");
exp_ += shift / bigit_bits;
shift %= bigit_bits;
return *this;
}
- template <typename Int> FMT_CONSTEXPR20 bigint& operator*=(Int value) {
+ template <typename Int>
+ FMT_CONSTEXPR20 auto operator*=(Int value) -> bigint& {
FMT_ASSERT(value > 0, "");
multiply(uint32_or_64_or_128_t<Int>(value));
return *this;
}
- friend FMT_CONSTEXPR20 int compare(const bigint& lhs, const bigint& rhs) {
+ friend FMT_CONSTEXPR20 auto compare(const bigint& lhs, const bigint& rhs)
+ -> int {
int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits();
if (num_lhs_bigits != num_rhs_bigits)
return num_lhs_bigits > num_rhs_bigits ? 1 : -1;
}
// Returns compare(lhs1 + lhs2, rhs).
- friend FMT_CONSTEXPR20 int add_compare(const bigint& lhs1, const bigint& lhs2,
- const bigint& rhs) {
+ friend FMT_CONSTEXPR20 auto add_compare(const bigint& lhs1,
+ const bigint& lhs2, const bigint& rhs)
+ -> int {
auto minimum = [](int a, int b) { return a < b ? a : b; };
auto maximum = [](int a, int b) { return a > b ? a : b; };
int max_lhs_bigits = maximum(lhs1.num_bigits(), lhs2.num_bigits());
bigits_.resize(to_unsigned(num_bigits + exp_difference));
for (int i = num_bigits - 1, j = i + exp_difference; i >= 0; --i, --j)
bigits_[j] = bigits_[i];
- std::uninitialized_fill_n(bigits_.data(), exp_difference, 0);
+ memset(bigits_.data(), 0, to_unsigned(exp_difference) * sizeof(bigit));
exp_ -= exp_difference;
}
// Divides this bignum by divisor, assigning the remainder to this and
// returning the quotient.
- FMT_CONSTEXPR20 int divmod_assign(const bigint& divisor) {
+ FMT_CONSTEXPR20 auto divmod_assign(const bigint& divisor) -> int {
FMT_ASSERT(this != &divisor, "");
if (compare(*this, divisor) < 0) return 0;
FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, "");
}
int even = static_cast<int>((value.f & 1) == 0);
if (!upper) upper = &lower;
+ bool shortest = num_digits < 0;
if ((flags & dragon::fixup) != 0) {
if (add_compare(numerator, *upper, denominator) + even <= 0) {
--exp10;
if ((flags & dragon::fixed) != 0) adjust_precision(num_digits, exp10 + 1);
}
// Invariant: value == (numerator / denominator) * pow(10, exp10).
- if (num_digits < 0) {
+ if (shortest) {
// Generate the shortest representation.
num_digits = 0;
char* data = buf.data();
}
// Generate the given number of digits.
exp10 -= num_digits - 1;
- if (num_digits == 0) {
- denominator *= 10;
- auto digit = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0';
+ if (num_digits <= 0) {
+ auto digit = '0';
+ if (num_digits == 0) {
+ denominator *= 10;
+ digit = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0';
+ }
buf.push_back(digit);
return;
}
}
if (buf[0] == overflow) {
buf[0] = '1';
- ++exp10;
+ if ((flags & dragon::fixed) != 0)
+ buf.push_back('0');
+ else
+ ++exp10;
}
return;
}
buf[num_digits - 1] = static_cast<char>('0' + digit);
}
+// Formats a floating-point number using the hexfloat format.
+template <typename Float, FMT_ENABLE_IF(!is_double_double<Float>::value)>
+FMT_CONSTEXPR20 void format_hexfloat(Float value, format_specs specs,
+ buffer<char>& buf) {
+ // float is passed as double to reduce the number of instantiations and to
+ // simplify implementation.
+ static_assert(!std::is_same<Float, float>::value, "");
+
+ using info = dragonbox::float_info<Float>;
+
+ // Assume Float is in the format [sign][exponent][significand].
+ using carrier_uint = typename info::carrier_uint;
+
+ constexpr auto num_float_significand_bits =
+ detail::num_significand_bits<Float>();
+
+ basic_fp<carrier_uint> f(value);
+ f.e += num_float_significand_bits;
+ if (!has_implicit_bit<Float>()) --f.e;
+
+ constexpr auto num_fraction_bits =
+ num_float_significand_bits + (has_implicit_bit<Float>() ? 1 : 0);
+ constexpr auto num_xdigits = (num_fraction_bits + 3) / 4;
+
+ constexpr auto leading_shift = ((num_xdigits - 1) * 4);
+ const auto leading_mask = carrier_uint(0xF) << leading_shift;
+ const auto leading_xdigit =
+ static_cast<uint32_t>((f.f & leading_mask) >> leading_shift);
+ if (leading_xdigit > 1) f.e -= (32 - countl_zero(leading_xdigit) - 1);
+
+ int print_xdigits = num_xdigits - 1;
+ if (specs.precision >= 0 && print_xdigits > specs.precision) {
+ const int shift = ((print_xdigits - specs.precision - 1) * 4);
+ const auto mask = carrier_uint(0xF) << shift;
+ const auto v = static_cast<uint32_t>((f.f & mask) >> shift);
+
+ if (v >= 8) {
+ const auto inc = carrier_uint(1) << (shift + 4);
+ f.f += inc;
+ f.f &= ~(inc - 1);
+ }
+
+ // Check long double overflow
+ if (!has_implicit_bit<Float>()) {
+ const auto implicit_bit = carrier_uint(1) << num_float_significand_bits;
+ if ((f.f & implicit_bit) == implicit_bit) {
+ f.f >>= 4;
+ f.e += 4;
+ }
+ }
+
+ print_xdigits = specs.precision;
+ }
+
+ char xdigits[num_bits<carrier_uint>() / 4];
+ detail::fill_n(xdigits, sizeof(xdigits), '0');
+ format_uint<4>(xdigits, f.f, num_xdigits, specs.upper);
+
+ // Remove zero tail
+ while (print_xdigits > 0 && xdigits[print_xdigits] == '0') --print_xdigits;
+
+ buf.push_back('0');
+ buf.push_back(specs.upper ? 'X' : 'x');
+ buf.push_back(xdigits[0]);
+ if (specs.alt || print_xdigits > 0 || print_xdigits < specs.precision)
+ buf.push_back('.');
+ buf.append(xdigits + 1, xdigits + 1 + print_xdigits);
+ for (; print_xdigits < specs.precision; ++print_xdigits) buf.push_back('0');
+
+ buf.push_back(specs.upper ? 'P' : 'p');
+
+ uint32_t abs_e;
+ if (f.e < 0) {
+ buf.push_back('-');
+ abs_e = static_cast<uint32_t>(-f.e);
+ } else {
+ buf.push_back('+');
+ abs_e = static_cast<uint32_t>(f.e);
+ }
+ format_decimal<char>(appender(buf), abs_e, detail::count_digits(abs_e));
+}
+
+template <typename Float, FMT_ENABLE_IF(is_double_double<Float>::value)>
+FMT_CONSTEXPR20 void format_hexfloat(Float value, format_specs specs,
+ buffer<char>& buf) {
+ format_hexfloat(static_cast<double>(value), specs, buf);
+}
+
+constexpr auto fractional_part_rounding_thresholds(int index) -> uint32_t {
+ // For checking rounding thresholds.
+ // The kth entry is chosen to be the smallest integer such that the
+ // upper 32-bits of 10^(k+1) times it is strictly bigger than 5 * 10^k.
+ // It is equal to ceil(2^31 + 2^32/10^(k + 1)).
+ // These are stored in a string literal because we cannot have static arrays
+ // in constexpr functions and non-static ones are poorly optimized.
+ return U"\x9999999a\x828f5c29\x80418938\x80068db9\x8000a7c6\x800010c7"
+ U"\x800001ae\x8000002b"[index];
+}
+
template <typename Float>
FMT_CONSTEXPR20 auto format_float(Float value, int precision, float_specs specs,
buffer<char>& buf) -> int {
int exp = 0;
bool use_dragon = true;
unsigned dragon_flags = 0;
- if (!is_fast_float<Float>()) {
+ if (!is_fast_float<Float>() || is_constant_evaluated()) {
const auto inv_log2_10 = 0.3010299956639812; // 1 / log2(10)
using info = dragonbox::float_info<decltype(converted_value)>;
const auto f = basic_fp<typename info::carrier_uint>(converted_value);
// 10^(exp - 1) <= value < 10^exp or 10^exp <= value < 10^(exp + 1).
// This is based on log10(value) == log2(value) / log2(10) and approximation
// of log2(value) by e + num_fraction_bits idea from double-conversion.
- exp = static_cast<int>(
- std::ceil((f.e + count_digits<1>(f.f) - 1) * inv_log2_10 - 1e-10));
+ auto e = (f.e + count_digits<1>(f.f) - 1) * inv_log2_10 - 1e-10;
+ exp = static_cast<int>(e);
+ if (e > exp) ++exp; // Compute ceil.
dragon_flags = dragon::fixup;
- } else if (!is_constant_evaluated() && precision < 0) {
+ } else if (precision < 0) {
// Use Dragonbox for the shortest format.
if (specs.binary32) {
auto dec = dragonbox::to_decimal(static_cast<float>(value));
- write<char>(buffer_appender<char>(buf), dec.significand);
+ write<char>(appender(buf), dec.significand);
return dec.exponent;
}
auto dec = dragonbox::to_decimal(static_cast<double>(value));
- write<char>(buffer_appender<char>(buf), dec.significand);
+ write<char>(appender(buf), dec.significand);
return dec.exponent;
} else {
- // Use Grisu + Dragon4 for the given precision:
- // https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf.
- const int min_exp = -60; // alpha in Grisu.
- int cached_exp10 = 0; // K in Grisu.
- fp normalized = normalize(fp(converted_value));
- const auto cached_pow = get_cached_power(
- min_exp - (normalized.e + fp::num_significand_bits), cached_exp10);
- normalized = normalized * cached_pow;
- gen_digits_handler handler{buf.data(), 0, precision, -cached_exp10, fixed};
- if (grisu_gen_digits(normalized, 1, exp, handler) != digits::error &&
- !is_constant_evaluated()) {
- exp += handler.exp10;
- buf.try_resize(to_unsigned(handler.size));
- use_dragon = false;
+ // Extract significand bits and exponent bits.
+ using info = dragonbox::float_info<double>;
+ auto br = bit_cast<uint64_t>(static_cast<double>(value));
+
+ const uint64_t significand_mask =
+ (static_cast<uint64_t>(1) << num_significand_bits<double>()) - 1;
+ uint64_t significand = (br & significand_mask);
+ int exponent = static_cast<int>((br & exponent_mask<double>()) >>
+ num_significand_bits<double>());
+
+ if (exponent != 0) { // Check if normal.
+ exponent -= exponent_bias<double>() + num_significand_bits<double>();
+ significand |=
+ (static_cast<uint64_t>(1) << num_significand_bits<double>());
+ significand <<= 1;
} else {
- exp += handler.size - cached_exp10 - 1;
- precision = handler.precision;
+ // Normalize subnormal inputs.
+ FMT_ASSERT(significand != 0, "zeros should not appear here");
+ int shift = countl_zero(significand);
+ FMT_ASSERT(shift >= num_bits<uint64_t>() - num_significand_bits<double>(),
+ "");
+ shift -= (num_bits<uint64_t>() - num_significand_bits<double>() - 2);
+ exponent = (std::numeric_limits<double>::min_exponent -
+ num_significand_bits<double>()) -
+ shift;
+ significand <<= shift;
+ }
+
+ // Compute the first several nonzero decimal significand digits.
+ // We call the number we get the first segment.
+ const int k = info::kappa - dragonbox::floor_log10_pow2(exponent);
+ exp = -k;
+ const int beta = exponent + dragonbox::floor_log2_pow10(k);
+ uint64_t first_segment;
+ bool has_more_segments;
+ int digits_in_the_first_segment;
+ {
+ const auto r = dragonbox::umul192_upper128(
+ significand << beta, dragonbox::get_cached_power(k));
+ first_segment = r.high();
+ has_more_segments = r.low() != 0;
+
+ // The first segment can have 18 ~ 19 digits.
+ if (first_segment >= 1000000000000000000ULL) {
+ digits_in_the_first_segment = 19;
+ } else {
+ // When it is of 18-digits, we align it to 19-digits by adding a bogus
+ // zero at the end.
+ digits_in_the_first_segment = 18;
+ first_segment *= 10;
+ }
+ }
+
+ // Compute the actual number of decimal digits to print.
+ if (fixed) adjust_precision(precision, exp + digits_in_the_first_segment);
+
+ // Use Dragon4 only when there might be not enough digits in the first
+ // segment.
+ if (digits_in_the_first_segment > precision) {
+ use_dragon = false;
+
+ if (precision <= 0) {
+ exp += digits_in_the_first_segment;
+
+ if (precision < 0) {
+ // Nothing to do, since all we have are just leading zeros.
+ buf.try_resize(0);
+ } else {
+ // We may need to round-up.
+ buf.try_resize(1);
+ if ((first_segment | static_cast<uint64_t>(has_more_segments)) >
+ 5000000000000000000ULL) {
+ buf[0] = '1';
+ } else {
+ buf[0] = '0';
+ }
+ }
+ } // precision <= 0
+ else {
+ exp += digits_in_the_first_segment - precision;
+
+ // When precision > 0, we divide the first segment into three
+ // subsegments, each with 9, 9, and 0 ~ 1 digits so that each fits
+ // in 32-bits which usually allows faster calculation than in
+ // 64-bits. Since some compiler (e.g. MSVC) doesn't know how to optimize
+ // division-by-constant for large 64-bit divisors, we do it here
+ // manually. The magic number 7922816251426433760 below is equal to
+ // ceil(2^(64+32) / 10^10).
+ const uint32_t first_subsegment = static_cast<uint32_t>(
+ dragonbox::umul128_upper64(first_segment, 7922816251426433760ULL) >>
+ 32);
+ const uint64_t second_third_subsegments =
+ first_segment - first_subsegment * 10000000000ULL;
+
+ uint64_t prod;
+ uint32_t digits;
+ bool should_round_up;
+ int number_of_digits_to_print = precision > 9 ? 9 : precision;
+
+ // Print a 9-digits subsegment, either the first or the second.
+ auto print_subsegment = [&](uint32_t subsegment, char* buffer) {
+ int number_of_digits_printed = 0;
+
+ // If we want to print an odd number of digits from the subsegment,
+ if ((number_of_digits_to_print & 1) != 0) {
+ // Convert to 64-bit fixed-point fractional form with 1-digit
+ // integer part. The magic number 720575941 is a good enough
+ // approximation of 2^(32 + 24) / 10^8; see
+ // https://jk-jeon.github.io/posts/2022/12/fixed-precision-formatting/#fixed-length-case
+ // for details.
+ prod = ((subsegment * static_cast<uint64_t>(720575941)) >> 24) + 1;
+ digits = static_cast<uint32_t>(prod >> 32);
+ *buffer = static_cast<char>('0' + digits);
+ number_of_digits_printed++;
+ }
+ // If we want to print an even number of digits from the
+ // first_subsegment,
+ else {
+ // Convert to 64-bit fixed-point fractional form with 2-digits
+ // integer part. The magic number 450359963 is a good enough
+ // approximation of 2^(32 + 20) / 10^7; see
+ // https://jk-jeon.github.io/posts/2022/12/fixed-precision-formatting/#fixed-length-case
+ // for details.
+ prod = ((subsegment * static_cast<uint64_t>(450359963)) >> 20) + 1;
+ digits = static_cast<uint32_t>(prod >> 32);
+ copy2(buffer, digits2(digits));
+ number_of_digits_printed += 2;
+ }
+
+ // Print all digit pairs.
+ while (number_of_digits_printed < number_of_digits_to_print) {
+ prod = static_cast<uint32_t>(prod) * static_cast<uint64_t>(100);
+ digits = static_cast<uint32_t>(prod >> 32);
+ copy2(buffer + number_of_digits_printed, digits2(digits));
+ number_of_digits_printed += 2;
+ }
+ };
+
+ // Print first subsegment.
+ print_subsegment(first_subsegment, buf.data());
+
+ // Perform rounding if the first subsegment is the last subsegment to
+ // print.
+ if (precision <= 9) {
+ // Rounding inside the subsegment.
+ // We round-up if:
+ // - either the fractional part is strictly larger than 1/2, or
+ // - the fractional part is exactly 1/2 and the last digit is odd.
+ // We rely on the following observations:
+ // - If fractional_part >= threshold, then the fractional part is
+ // strictly larger than 1/2.
+ // - If the MSB of fractional_part is set, then the fractional part
+ // must be at least 1/2.
+ // - When the MSB of fractional_part is set, either
+ // second_third_subsegments being nonzero or has_more_segments
+ // being true means there are further digits not printed, so the
+ // fractional part is strictly larger than 1/2.
+ if (precision < 9) {
+ uint32_t fractional_part = static_cast<uint32_t>(prod);
+ should_round_up =
+ fractional_part >= fractional_part_rounding_thresholds(
+ 8 - number_of_digits_to_print) ||
+ ((fractional_part >> 31) &
+ ((digits & 1) | (second_third_subsegments != 0) |
+ has_more_segments)) != 0;
+ }
+ // Rounding at the subsegment boundary.
+ // In this case, the fractional part is at least 1/2 if and only if
+ // second_third_subsegments >= 5000000000ULL, and is strictly larger
+ // than 1/2 if we further have either second_third_subsegments >
+ // 5000000000ULL or has_more_segments == true.
+ else {
+ should_round_up = second_third_subsegments > 5000000000ULL ||
+ (second_third_subsegments == 5000000000ULL &&
+ ((digits & 1) != 0 || has_more_segments));
+ }
+ }
+ // Otherwise, print the second subsegment.
+ else {
+ // Compilers are not aware of how to leverage the maximum value of
+ // second_third_subsegments to find out a better magic number which
+ // allows us to eliminate an additional shift. 1844674407370955162 =
+ // ceil(2^64/10) < ceil(2^64*(10^9/(10^10 - 1))).
+ const uint32_t second_subsegment =
+ static_cast<uint32_t>(dragonbox::umul128_upper64(
+ second_third_subsegments, 1844674407370955162ULL));
+ const uint32_t third_subsegment =
+ static_cast<uint32_t>(second_third_subsegments) -
+ second_subsegment * 10;
+
+ number_of_digits_to_print = precision - 9;
+ print_subsegment(second_subsegment, buf.data() + 9);
+
+ // Rounding inside the subsegment.
+ if (precision < 18) {
+ // The condition third_subsegment != 0 implies that the segment was
+ // of 19 digits, so in this case the third segment should be
+ // consisting of a genuine digit from the input.
+ uint32_t fractional_part = static_cast<uint32_t>(prod);
+ should_round_up =
+ fractional_part >= fractional_part_rounding_thresholds(
+ 8 - number_of_digits_to_print) ||
+ ((fractional_part >> 31) &
+ ((digits & 1) | (third_subsegment != 0) |
+ has_more_segments)) != 0;
+ }
+ // Rounding at the subsegment boundary.
+ else {
+ // In this case, the segment must be of 19 digits, thus
+ // the third subsegment should be consisting of a genuine digit from
+ // the input.
+ should_round_up = third_subsegment > 5 ||
+ (third_subsegment == 5 &&
+ ((digits & 1) != 0 || has_more_segments));
+ }
+ }
+
+ // Round-up if necessary.
+ if (should_round_up) {
+ ++buf[precision - 1];
+ for (int i = precision - 1; i > 0 && buf[i] > '9'; --i) {
+ buf[i] = '0';
+ ++buf[i - 1];
+ }
+ if (buf[0] > '9') {
+ buf[0] = '1';
+ if (fixed)
+ buf[precision++] = '0';
+ else
+ ++exp;
+ }
+ }
+ buf.try_resize(to_unsigned(precision));
+ }
+ } // if (digits_in_the_first_segment > precision)
+ else {
+ // Adjust the exponent for its use in Dragon4.
+ exp += digits_in_the_first_segment - 1;
}
}
if (use_dragon) {
return exp;
}
-template <typename Char, typename OutputIt, typename T,
- FMT_ENABLE_IF(is_floating_point<T>::value)>
-FMT_CONSTEXPR20 auto write(OutputIt out, T value,
- basic_format_specs<Char> specs, locale_ref loc = {})
- -> OutputIt {
- if (const_check(!is_supported_floating_point(value))) return out;
- float_specs fspecs = parse_float_type_spec(specs);
- fspecs.sign = specs.sign;
+template <typename Char, typename OutputIt, typename T>
+FMT_CONSTEXPR20 auto write_float(OutputIt out, T value, format_specs specs,
+ locale_ref loc) -> OutputIt {
+ sign_t sign = specs.sign;
if (detail::signbit(value)) { // value < 0 is false for NaN so use signbit.
- fspecs.sign = sign::minus;
+ sign = sign::minus;
value = -value;
- } else if (fspecs.sign == sign::minus) {
- fspecs.sign = sign::none;
+ } else if (sign == sign::minus) {
+ sign = sign::none;
}
if (!detail::isfinite(value))
- return write_nonfinite(out, detail::isnan(value), specs, fspecs);
+ return write_nonfinite<Char>(out, detail::isnan(value), specs, sign);
- if (specs.align == align::numeric && fspecs.sign) {
+ if (specs.align == align::numeric && sign) {
auto it = reserve(out, 1);
- *it++ = detail::sign<Char>(fspecs.sign);
+ *it++ = detail::sign<Char>(sign);
out = base_iterator(out, it);
- fspecs.sign = sign::none;
+ sign = sign::none;
if (specs.width != 0) --specs.width;
}
memory_buffer buffer;
- if (fspecs.format == float_format::hex) {
- if (fspecs.sign) buffer.push_back(detail::sign<char>(fspecs.sign));
- snprintf_float(convert_float(value), specs.precision, fspecs, buffer);
- return write_bytes<align::right>(out, {buffer.data(), buffer.size()},
- specs);
+ if (specs.type == presentation_type::hexfloat) {
+ if (sign) buffer.push_back(detail::sign<char>(sign));
+ format_hexfloat(convert_float(value), specs, buffer);
+ return write_bytes<Char, align::right>(out, {buffer.data(), buffer.size()},
+ specs);
}
+
int precision = specs.precision >= 0 || specs.type == presentation_type::none
? specs.precision
: 6;
- if (fspecs.format == float_format::exp) {
+ if (specs.type == presentation_type::exp) {
if (precision == max_value<int>())
- throw_format_error("number is too big");
+ report_error("number is too big");
else
++precision;
- } else if (fspecs.format != float_format::fixed && precision == 0) {
+ } else if (specs.type != presentation_type::fixed && precision == 0) {
precision = 1;
}
+ float_specs fspecs = parse_float_type_spec(specs);
+ fspecs.sign = sign;
if (const_check(std::is_same<T, float>())) fspecs.binary32 = true;
int exp = format_float(convert_float(value), precision, fspecs, buffer);
fspecs.precision = precision;
auto f = big_decimal_fp{buffer.data(), static_cast<int>(buffer.size()), exp};
- return write_float(out, f, specs, fspecs, loc);
+ return write_float<Char>(out, f, specs, fspecs, loc);
+}
+
+template <typename Char, typename OutputIt, typename T,
+ FMT_ENABLE_IF(is_floating_point<T>::value)>
+FMT_CONSTEXPR20 auto write(OutputIt out, T value, format_specs specs,
+ locale_ref loc = {}) -> OutputIt {
+ if (const_check(!is_supported_floating_point(value))) return out;
+ return specs.localized && write_loc(out, value, specs, loc)
+ ? out
+ : write_float<Char>(out, value, specs, loc);
}
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(is_fast_float<T>::value)>
FMT_CONSTEXPR20 auto write(OutputIt out, T value) -> OutputIt {
- if (is_constant_evaluated())
- return write(out, value, basic_format_specs<Char>());
+ if (is_constant_evaluated()) return write<Char>(out, value, format_specs());
if (const_check(!is_supported_floating_point(value))) return out;
- auto fspecs = float_specs();
+ auto sign = sign_t::none;
if (detail::signbit(value)) {
- fspecs.sign = sign::minus;
+ sign = sign::minus;
value = -value;
}
- constexpr auto specs = basic_format_specs<Char>();
+ constexpr auto specs = format_specs();
using floaty = conditional_t<std::is_same<T, long double>::value, double, T>;
- using uint = typename dragonbox::float_info<floaty>::carrier_uint;
- uint mask = exponent_mask<floaty>();
- if ((bit_cast<uint>(value) & mask) == mask)
- return write_nonfinite(out, std::isnan(value), specs, fspecs);
+ using floaty_uint = typename dragonbox::float_info<floaty>::carrier_uint;
+ floaty_uint mask = exponent_mask<floaty>();
+ if ((bit_cast<floaty_uint>(value) & mask) == mask)
+ return write_nonfinite<Char>(out, std::isnan(value), specs, sign);
+ auto fspecs = float_specs();
+ fspecs.sign = sign;
auto dec = dragonbox::to_decimal(static_cast<floaty>(value));
- return write_float(out, dec, specs, fspecs, {});
+ return write_float<Char>(out, dec, specs, fspecs, {});
}
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(is_floating_point<T>::value &&
!is_fast_float<T>::value)>
inline auto write(OutputIt out, T value) -> OutputIt {
- return write(out, value, basic_format_specs<Char>());
+ return write<Char>(out, value, format_specs());
}
template <typename Char, typename OutputIt>
-auto write(OutputIt out, monostate, basic_format_specs<Char> = {},
- locale_ref = {}) -> OutputIt {
+auto write(OutputIt out, monostate, format_specs = {}, locale_ref = {})
+ -> OutputIt {
FMT_ASSERT(false, "");
return out;
}
template <typename Char, typename OutputIt>
FMT_CONSTEXPR auto write(OutputIt out, basic_string_view<Char> value)
-> OutputIt {
- auto it = reserve(out, value.size());
- it = copy_str_noinline<Char>(value.begin(), value.end(), it);
- return base_iterator(out, it);
+ return copy_noinline<Char>(value.begin(), value.end(), out);
}
template <typename Char, typename OutputIt, typename T,
- FMT_ENABLE_IF(is_string<T>::value)>
+ FMT_ENABLE_IF(has_to_string_view<T>::value)>
constexpr auto write(OutputIt out, const T& value) -> OutputIt {
return write<Char>(out, to_string_view(value));
}
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(std::is_same<T, bool>::value)>
-FMT_CONSTEXPR auto write(OutputIt out, T value,
- const basic_format_specs<Char>& specs = {},
+FMT_CONSTEXPR auto write(OutputIt out, T value, const format_specs& specs = {},
locale_ref = {}) -> OutputIt {
return specs.type != presentation_type::none &&
specs.type != presentation_type::string
- ? write(out, value ? 1 : 0, specs, {})
- : write_bytes(out, value ? "true" : "false", specs);
+ ? write<Char>(out, value ? 1 : 0, specs, {})
+ : write_bytes<Char>(out, value ? "true" : "false", specs);
}
template <typename Char, typename OutputIt>
}
template <typename Char, typename OutputIt>
-FMT_CONSTEXPR_CHAR_TRAITS auto write(OutputIt out, const Char* value)
- -> OutputIt {
- if (!value) {
- throw_format_error("string pointer is null");
- } else {
- out = write(out, basic_string_view<Char>(value));
- }
+FMT_CONSTEXPR20 auto write(OutputIt out, const Char* value) -> OutputIt {
+ if (value) return write(out, basic_string_view<Char>(value));
+ report_error("string pointer is null");
return out;
}
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(std::is_same<T, void>::value)>
-auto write(OutputIt out, const T* value,
- const basic_format_specs<Char>& specs = {}, locale_ref = {})
- -> OutputIt {
- check_pointer_type_spec(specs.type, error_handler());
+auto write(OutputIt out, const T* value, const format_specs& specs = {},
+ locale_ref = {}) -> OutputIt {
return write_ptr<Char>(out, bit_cast<uintptr_t>(value), &specs);
}
template <typename Char, typename OutputIt, typename T,
typename Context = basic_format_context<OutputIt, Char>>
FMT_CONSTEXPR auto write(OutputIt out, const T& value) -> enable_if_t<
- std::is_class<T>::value && !is_string<T>::value &&
+ std::is_class<T>::value && !has_to_string_view<T>::value &&
!is_floating_point<T>::value && !std::is_same<T, Char>::value &&
- !std::is_same<const T&,
- decltype(arg_mapper<Context>().map(value))>::value,
+ !std::is_same<T, remove_cvref_t<decltype(arg_mapper<Context>().map(
+ value))>>::value,
OutputIt> {
return write<Char>(out, arg_mapper<Context>().map(value));
}
template <typename Char, typename OutputIt, typename T,
typename Context = basic_format_context<OutputIt, Char>>
FMT_CONSTEXPR auto write(OutputIt out, const T& value)
- -> enable_if_t<mapped_type_constant<T, Context>::value == type::custom_type,
+ -> enable_if_t<mapped_type_constant<T, Context>::value ==
+ type::custom_type &&
+ !std::is_fundamental<T>::value,
OutputIt> {
- using formatter_type =
- conditional_t<has_formatter<T, Context>::value,
- typename Context::template formatter_type<T>,
- fallback_formatter<T, Char>>;
+ auto formatter = typename Context::template formatter_type<T>();
+ auto parse_ctx = typename Context::parse_context_type({});
+ formatter.parse(parse_ctx);
auto ctx = Context(out, {}, {});
- return formatter_type().format(value, ctx);
+ return formatter.format(value, ctx);
}
// An argument visitor that formats the argument and writes it via the output
// iterator. It's a class and not a generic lambda for compatibility with C++11.
template <typename Char> struct default_arg_formatter {
- using iterator = buffer_appender<Char>;
- using context = buffer_context<Char>;
+ using iterator = basic_appender<Char>;
+ using context = buffered_context<Char>;
iterator out;
basic_format_args<context> args;
};
template <typename Char> struct arg_formatter {
- using iterator = buffer_appender<Char>;
- using context = buffer_context<Char>;
+ using iterator = basic_appender<Char>;
+ using context = buffered_context<Char>;
iterator out;
- const basic_format_specs<Char>& specs;
+ const format_specs& specs;
locale_ref locale;
template <typename T>
FMT_CONSTEXPR FMT_INLINE auto operator()(T value) -> iterator {
- return detail::write(out, value, specs, locale);
+ return detail::write<Char>(out, value, specs, locale);
}
auto operator()(typename basic_format_arg<context>::handle) -> iterator {
// User-defined types are handled separately because they require access
}
};
-template <typename Char> struct custom_formatter {
- basic_format_parse_context<Char>& parse_ctx;
- buffer_context<Char>& ctx;
-
- void operator()(
- typename basic_format_arg<buffer_context<Char>>::handle h) const {
- h.format(parse_ctx, ctx);
- }
- template <typename T> void operator()(T) const {}
-};
-
-template <typename T>
-using is_integer =
- bool_constant<is_integral<T>::value && !std::is_same<T, bool>::value &&
- !std::is_same<T, char>::value &&
- !std::is_same<T, wchar_t>::value>;
-
-template <typename ErrorHandler> class width_checker {
- public:
- explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {}
-
+struct width_checker {
template <typename T, FMT_ENABLE_IF(is_integer<T>::value)>
FMT_CONSTEXPR auto operator()(T value) -> unsigned long long {
- if (is_negative(value)) handler_.on_error("negative width");
+ if (is_negative(value)) report_error("negative width");
return static_cast<unsigned long long>(value);
}
template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)>
FMT_CONSTEXPR auto operator()(T) -> unsigned long long {
- handler_.on_error("width is not integer");
+ report_error("width is not integer");
return 0;
}
-
- private:
- ErrorHandler& handler_;
};
-template <typename ErrorHandler> class precision_checker {
- public:
- explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {}
-
+struct precision_checker {
template <typename T, FMT_ENABLE_IF(is_integer<T>::value)>
FMT_CONSTEXPR auto operator()(T value) -> unsigned long long {
- if (is_negative(value)) handler_.on_error("negative precision");
+ if (is_negative(value)) report_error("negative precision");
return static_cast<unsigned long long>(value);
}
template <typename T, FMT_ENABLE_IF(!is_integer<T>::value)>
FMT_CONSTEXPR auto operator()(T) -> unsigned long long {
- handler_.on_error("precision is not integer");
+ report_error("precision is not integer");
return 0;
}
-
- private:
- ErrorHandler& handler_;
};
-template <template <typename> class Handler, typename FormatArg,
- typename ErrorHandler>
-FMT_CONSTEXPR auto get_dynamic_spec(FormatArg arg, ErrorHandler eh) -> int {
- unsigned long long value = visit_format_arg(Handler<ErrorHandler>(eh), arg);
- if (value > to_unsigned(max_value<int>())) eh.on_error("number is too big");
+template <typename Handler, typename FormatArg>
+FMT_CONSTEXPR auto get_dynamic_spec(FormatArg arg) -> int {
+ unsigned long long value = arg.visit(Handler());
+ if (value > to_unsigned(max_value<int>())) report_error("number is too big");
return static_cast<int>(value);
}
template <typename Context, typename ID>
-FMT_CONSTEXPR auto get_arg(Context& ctx, ID id) ->
- typename Context::format_arg {
+FMT_CONSTEXPR auto get_arg(Context& ctx, ID id) -> decltype(ctx.arg(id)) {
auto arg = ctx.arg(id);
- if (!arg) ctx.on_error("argument not found");
+ if (!arg) report_error("argument not found");
return arg;
}
-// The standard format specifier handler with checking.
-template <typename Char> class specs_handler : public specs_setter<Char> {
- private:
- basic_format_parse_context<Char>& parse_context_;
- buffer_context<Char>& context_;
-
- // This is only needed for compatibility with gcc 4.4.
- using format_arg = basic_format_arg<buffer_context<Char>>;
-
- FMT_CONSTEXPR auto get_arg(auto_id) -> format_arg {
- return detail::get_arg(context_, parse_context_.next_arg_id());
- }
-
- FMT_CONSTEXPR auto get_arg(int arg_id) -> format_arg {
- parse_context_.check_arg_id(arg_id);
- return detail::get_arg(context_, arg_id);
- }
-
- FMT_CONSTEXPR auto get_arg(basic_string_view<Char> arg_id) -> format_arg {
- parse_context_.check_arg_id(arg_id);
- return detail::get_arg(context_, arg_id);
- }
-
- public:
- FMT_CONSTEXPR specs_handler(basic_format_specs<Char>& specs,
- basic_format_parse_context<Char>& parse_ctx,
- buffer_context<Char>& ctx)
- : specs_setter<Char>(specs), parse_context_(parse_ctx), context_(ctx) {}
-
- template <typename Id> FMT_CONSTEXPR void on_dynamic_width(Id arg_id) {
- this->specs_.width = get_dynamic_spec<width_checker>(
- get_arg(arg_id), context_.error_handler());
- }
-
- template <typename Id> FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) {
- this->specs_.precision = get_dynamic_spec<precision_checker>(
- get_arg(arg_id), context_.error_handler());
- }
-
- void on_error(const char* message) { context_.on_error(message); }
-};
-
-template <template <typename> class Handler, typename Context>
+template <typename Handler, typename Context>
FMT_CONSTEXPR void handle_dynamic_spec(int& value,
arg_ref<typename Context::char_type> ref,
Context& ctx) {
case arg_id_kind::none:
break;
case arg_id_kind::index:
- value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.index),
- ctx.error_handler());
+ value = detail::get_dynamic_spec<Handler>(get_arg(ctx, ref.val.index));
break;
case arg_id_kind::name:
- value = detail::get_dynamic_spec<Handler>(ctx.arg(ref.val.name),
- ctx.error_handler());
+ value = detail::get_dynamic_spec<Handler>(get_arg(ctx, ref.val.name));
break;
}
}
#if FMT_USE_USER_DEFINED_LITERALS
-template <typename Char> struct udl_formatter {
- basic_string_view<Char> str;
-
- template <typename... T>
- auto operator()(T&&... args) const -> std::basic_string<Char> {
- return vformat(str, fmt::make_format_args<buffer_context<Char>>(args...));
- }
-};
-
# if FMT_USE_NONTYPE_TEMPLATE_ARGS
template <typename T, typename Char, size_t N,
fmt::detail_exported::fixed_string<Char, N> Str>
#endif // FMT_USE_USER_DEFINED_LITERALS
template <typename Locale, typename Char>
-auto vformat(const Locale& loc, basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args)
+auto vformat(const Locale& loc, basic_string_view<Char> fmt,
+ typename detail::vformat_args<Char>::type args)
-> std::basic_string<Char> {
- basic_memory_buffer<Char> buffer;
- detail::vformat_to(buffer, format_str, args, detail::locale_ref(loc));
- return {buffer.data(), buffer.size()};
+ auto buf = basic_memory_buffer<Char>();
+ detail::vformat_to(buf, fmt, args, detail::locale_ref(loc));
+ return {buf.data(), buf.size()};
}
using format_func = void (*)(detail::buffer<char>&, int, const char*);
FMT_API void format_error_code(buffer<char>& out, int error_code,
string_view message) noexcept;
+using fmt::report_error;
FMT_API void report_error(format_func func, int error_code,
const char* message) noexcept;
-FMT_END_DETAIL_NAMESPACE
+} // namespace detail
+FMT_BEGIN_EXPORT
FMT_API auto vsystem_error(int error_code, string_view format_str,
format_args args) -> std::system_error;
/**
- \rst
- Constructs :class:`std::system_error` with a message formatted with
- ``fmt::format(fmt, args...)``.
- *error_code* is a system error code as given by ``errno``.
-
- **Example**::
-
- // This throws std::system_error with the description
- // cannot open file 'madeup': No such file or directory
- // or similar (system message may vary).
- const char* filename = "madeup";
- std::FILE* file = std::fopen(filename, "r");
- if (!file)
- throw fmt::system_error(errno, "cannot open file '{}'", filename);
- \endrst
-*/
+ * Constructs `std::system_error` with a message formatted with
+ * `fmt::format(fmt, args...)`.
+ * `error_code` is a system error code as given by `errno`.
+ *
+ * **Example**:
+ *
+ * // This throws std::system_error with the description
+ * // cannot open file 'madeup': No such file or directory
+ * // or similar (system message may vary).
+ * const char* filename = "madeup";
+ * std::FILE* file = std::fopen(filename, "r");
+ * if (!file)
+ * throw fmt::system_error(errno, "cannot open file '{}'", filename);
+ */
template <typename... T>
auto system_error(int error_code, format_string<T...> fmt, T&&... args)
-> std::system_error {
}
/**
- \rst
- Formats an error message for an error returned by an operating system or a
- language runtime, for example a file opening error, and writes it to *out*.
- The format is the same as the one used by ``std::system_error(ec, message)``
- where ``ec`` is ``std::error_code(error_code, std::generic_category()})``.
- It is implementation-defined but normally looks like:
-
- .. parsed-literal::
- *<message>*: *<system-message>*
-
- where *<message>* is the passed message and *<system-message>* is the system
- message corresponding to the error code.
- *error_code* is a system error code as given by ``errno``.
- \endrst
+ * Formats an error message for an error returned by an operating system or a
+ * language runtime, for example a file opening error, and writes it to `out`.
+ * The format is the same as the one used by `std::system_error(ec, message)`
+ * where `ec` is `std::error_code(error_code, std::generic_category())`.
+ * It is implementation-defined but normally looks like:
+ *
+ * <message>: <system-message>
+ *
+ * where `<message>` is the passed message and `<system-message>` is the system
+ * message corresponding to the error code.
+ * `error_code` is a system error code as given by `errno`.
*/
FMT_API void format_system_error(detail::buffer<char>& out, int error_code,
const char* message) noexcept;
// Can be used to report errors from destructors.
FMT_API void report_system_error(int error_code, const char* message) noexcept;
-/** Fast integer formatter. */
+/// A fast integer formatter.
class format_int {
private:
// Buffer should be large enough to hold all digits (digits10 + 1),
mutable char buffer_[buffer_size];
char* str_;
- template <typename UInt> auto format_unsigned(UInt value) -> char* {
+ template <typename UInt>
+ FMT_CONSTEXPR20 auto format_unsigned(UInt value) -> char* {
auto n = static_cast<detail::uint32_or_64_or_128_t<UInt>>(value);
return detail::format_decimal(buffer_, n, buffer_size - 1).begin;
}
- template <typename Int> auto format_signed(Int value) -> char* {
+ template <typename Int>
+ FMT_CONSTEXPR20 auto format_signed(Int value) -> char* {
auto abs_value = static_cast<detail::uint32_or_64_or_128_t<Int>>(value);
bool negative = value < 0;
if (negative) abs_value = 0 - abs_value;
}
public:
- explicit format_int(int value) : str_(format_signed(value)) {}
- explicit format_int(long value) : str_(format_signed(value)) {}
- explicit format_int(long long value) : str_(format_signed(value)) {}
- explicit format_int(unsigned value) : str_(format_unsigned(value)) {}
- explicit format_int(unsigned long value) : str_(format_unsigned(value)) {}
- explicit format_int(unsigned long long value)
+ explicit FMT_CONSTEXPR20 format_int(int value) : str_(format_signed(value)) {}
+ explicit FMT_CONSTEXPR20 format_int(long value)
+ : str_(format_signed(value)) {}
+ explicit FMT_CONSTEXPR20 format_int(long long value)
+ : str_(format_signed(value)) {}
+ explicit FMT_CONSTEXPR20 format_int(unsigned value)
+ : str_(format_unsigned(value)) {}
+ explicit FMT_CONSTEXPR20 format_int(unsigned long value)
+ : str_(format_unsigned(value)) {}
+ explicit FMT_CONSTEXPR20 format_int(unsigned long long value)
: str_(format_unsigned(value)) {}
- /** Returns the number of characters written to the output buffer. */
- auto size() const -> size_t {
+ /// Returns the number of characters written to the output buffer.
+ FMT_CONSTEXPR20 auto size() const -> size_t {
return detail::to_unsigned(buffer_ - str_ + buffer_size - 1);
}
- /**
- Returns a pointer to the output buffer content. No terminating null
- character is appended.
- */
- auto data() const -> const char* { return str_; }
+ /// Returns a pointer to the output buffer content. No terminating null
+ /// character is appended.
+ FMT_CONSTEXPR20 auto data() const -> const char* { return str_; }
- /**
- Returns a pointer to the output buffer content with terminating null
- character appended.
- */
- auto c_str() const -> const char* {
+ /// Returns a pointer to the output buffer content with terminating null
+ /// character appended.
+ FMT_CONSTEXPR20 auto c_str() const -> const char* {
buffer_[buffer_size - 1] = '\0';
return str_;
}
- /**
- \rst
- Returns the content of the output buffer as an ``std::string``.
- \endrst
- */
+ /// Returns the content of the output buffer as an `std::string`.
auto str() const -> std::string { return std::string(str_, size()); }
};
template <typename T, typename Char>
-template <typename FormatContext>
-FMT_CONSTEXPR FMT_INLINE auto
-formatter<T, Char,
- enable_if_t<detail::type_constant<T, Char>::value !=
- detail::type::custom_type>>::format(const T& val,
- FormatContext& ctx)
- const -> decltype(ctx.out()) {
- if (specs_.width_ref.kind != detail::arg_id_kind::none ||
- specs_.precision_ref.kind != detail::arg_id_kind::none) {
- auto specs = specs_;
- detail::handle_dynamic_spec<detail::width_checker>(specs.width,
- specs.width_ref, ctx);
- detail::handle_dynamic_spec<detail::precision_checker>(
- specs.precision, specs.precision_ref, ctx);
- return detail::write<Char>(ctx.out(), val, specs, ctx.locale());
- }
- return detail::write<Char>(ctx.out(), val, specs_, ctx.locale());
-}
-
-template <typename Char>
-struct formatter<void*, Char> : formatter<const void*, Char> {
+struct formatter<T, Char, enable_if_t<detail::has_format_as<T>::value>>
+ : formatter<detail::format_as_t<T>, Char> {
template <typename FormatContext>
- auto format(void* val, FormatContext& ctx) const -> decltype(ctx.out()) {
- return formatter<const void*, Char>::format(val, ctx);
+ auto format(const T& value, FormatContext& ctx) const -> decltype(ctx.out()) {
+ auto&& val = format_as(value); // Make an lvalue reference for format.
+ return formatter<detail::format_as_t<T>, Char>::format(val, ctx);
}
};
-template <typename Char, size_t N>
-struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> {
- template <typename FormatContext>
- FMT_CONSTEXPR auto format(const Char* val, FormatContext& ctx) const
- -> decltype(ctx.out()) {
- return formatter<basic_string_view<Char>, Char>::format(val, ctx);
- }
-};
-
-// A formatter for types known only at run time such as variant alternatives.
-//
-// Usage:
-// using variant = std::variant<int, std::string>;
-// template <>
-// struct formatter<variant>: dynamic_formatter<> {
-// auto format(const variant& v, format_context& ctx) {
-// return visit([&](const auto& val) {
-// return dynamic_formatter<>::format(val, ctx);
-// }, v);
-// }
-// };
-template <typename Char = char> class dynamic_formatter {
- private:
- detail::dynamic_format_specs<Char> specs_;
- const Char* format_str_;
-
- struct null_handler : detail::error_handler {
- void on_align(align_t) {}
- void on_sign(sign_t) {}
- void on_hash() {}
- };
-
- template <typename Context> void handle_specs(Context& ctx) {
- detail::handle_dynamic_spec<detail::width_checker>(specs_.width,
- specs_.width_ref, ctx);
- detail::handle_dynamic_spec<detail::precision_checker>(
- specs_.precision, specs_.precision_ref, ctx);
- }
+#define FMT_FORMAT_AS(Type, Base) \
+ template <typename Char> \
+ struct formatter<Type, Char> : formatter<Base, Char> { \
+ template <typename FormatContext> \
+ auto format(Type value, FormatContext& ctx) const -> decltype(ctx.out()) { \
+ return formatter<Base, Char>::format(value, ctx); \
+ } \
+ }
+
+FMT_FORMAT_AS(signed char, int);
+FMT_FORMAT_AS(unsigned char, unsigned);
+FMT_FORMAT_AS(short, int);
+FMT_FORMAT_AS(unsigned short, unsigned);
+FMT_FORMAT_AS(long, detail::long_type);
+FMT_FORMAT_AS(unsigned long, detail::ulong_type);
+FMT_FORMAT_AS(Char*, const Char*);
+FMT_FORMAT_AS(std::nullptr_t, const void*);
+FMT_FORMAT_AS(detail::std_string_view<Char>, basic_string_view<Char>);
+FMT_FORMAT_AS(void*, const void*);
+
+template <typename Char, typename Traits, typename Allocator>
+class formatter<std::basic_string<Char, Traits, Allocator>, Char>
+ : public formatter<basic_string_view<Char>, Char> {};
- public:
- template <typename ParseContext>
- FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- format_str_ = ctx.begin();
- // Checks are deferred to formatting time when the argument type is known.
- detail::dynamic_specs_handler<ParseContext> handler(specs_, ctx);
- return detail::parse_format_specs(ctx.begin(), ctx.end(), handler);
- }
-
- template <typename T, typename FormatContext>
- auto format(const T& val, FormatContext& ctx) -> decltype(ctx.out()) {
- handle_specs(ctx);
- detail::specs_checker<null_handler> checker(
- null_handler(), detail::mapped_type_constant<T, FormatContext>::value);
- checker.on_align(specs_.align);
- if (specs_.sign != sign::none) checker.on_sign(specs_.sign);
- if (specs_.alt) checker.on_hash();
- if (specs_.precision >= 0) checker.end_precision();
- return detail::write<Char>(ctx.out(), val, specs_, ctx.locale());
- }
-};
+template <typename Char, size_t N>
+struct formatter<Char[N], Char> : formatter<basic_string_view<Char>, Char> {};
/**
- \rst
- Converts ``p`` to ``const void*`` for pointer formatting.
-
- **Example**::
-
- auto s = fmt::format("{}", fmt::ptr(p));
- \endrst
+ * Converts `p` to `const void*` for pointer formatting.
+ *
+ * **Example**:
+ *
+ * auto s = fmt::format("{}", fmt::ptr(p));
*/
template <typename T> auto ptr(T p) -> const void* {
static_assert(std::is_pointer<T>::value, "");
return detail::bit_cast<const void*>(p);
}
-template <typename T> auto ptr(const std::unique_ptr<T>& p) -> const void* {
- return p.get();
-}
-template <typename T> auto ptr(const std::shared_ptr<T>& p) -> const void* {
- return p.get();
-}
/**
- \rst
- Converts ``e`` to the underlying type.
-
- **Example**::
-
- enum class color { red, green, blue };
- auto s = fmt::format("{}", fmt::underlying(color::red));
- \endrst
+ * Converts `e` to the underlying type.
+ *
+ * **Example**:
+ *
+ * enum class color { red, green, blue };
+ * auto s = fmt::format("{}", fmt::underlying(color::red));
*/
template <typename Enum>
constexpr auto underlying(Enum e) noexcept -> underlying_t<Enum> {
template <> struct formatter<bytes> {
private:
- detail::dynamic_format_specs<char> specs_;
+ detail::dynamic_format_specs<> specs_;
public:
template <typename ParseContext>
- FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- using handler_type = detail::dynamic_specs_handler<ParseContext>;
- detail::specs_checker<handler_type> handler(handler_type(specs_, ctx),
- detail::type::string_type);
- auto it = parse_format_specs(ctx.begin(), ctx.end(), handler);
- detail::check_string_type_spec(specs_.type, ctx.error_handler());
- return it;
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const char* {
+ return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx,
+ detail::type::string_type);
}
template <typename FormatContext>
- auto format(bytes b, FormatContext& ctx) -> decltype(ctx.out()) {
- detail::handle_dynamic_spec<detail::width_checker>(specs_.width,
- specs_.width_ref, ctx);
+ auto format(bytes b, FormatContext& ctx) const -> decltype(ctx.out()) {
+ auto specs = specs_;
+ detail::handle_dynamic_spec<detail::width_checker>(specs.width,
+ specs.width_ref, ctx);
detail::handle_dynamic_spec<detail::precision_checker>(
- specs_.precision, specs_.precision_ref, ctx);
- return detail::write_bytes(ctx.out(), b.data_, specs_);
+ specs.precision, specs.precision_ref, ctx);
+ return detail::write_bytes<char>(ctx.out(), b.data_, specs);
}
};
// group_digits_view is not derived from view because it copies the argument.
-template <typename T> struct group_digits_view { T value; };
+template <typename T> struct group_digits_view {
+ T value;
+};
/**
- \rst
- Returns a view that formats an integer value using ',' as a locale-independent
- thousands separator.
-
- **Example**::
-
- fmt::print("{}", fmt::group_digits(12345));
- // Output: "12,345"
- \endrst
+ * Returns a view that formats an integer value using ',' as a
+ * locale-independent thousands separator.
+ *
+ * **Example**:
+ *
+ * fmt::print("{}", fmt::group_digits(12345));
+ * // Output: "12,345"
*/
template <typename T> auto group_digits(T value) -> group_digits_view<T> {
return {value};
template <typename T> struct formatter<group_digits_view<T>> : formatter<T> {
private:
- detail::dynamic_format_specs<char> specs_;
+ detail::dynamic_format_specs<> specs_;
public:
template <typename ParseContext>
- FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- using handler_type = detail::dynamic_specs_handler<ParseContext>;
- detail::specs_checker<handler_type> handler(handler_type(specs_, ctx),
- detail::type::int_type);
- auto it = parse_format_specs(ctx.begin(), ctx.end(), handler);
- detail::check_string_type_spec(specs_.type, ctx.error_handler());
- return it;
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const char* {
+ return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx,
+ detail::type::int_type);
}
template <typename FormatContext>
- auto format(group_digits_view<T> t, FormatContext& ctx)
+ auto format(group_digits_view<T> t, FormatContext& ctx) const
-> decltype(ctx.out()) {
- detail::handle_dynamic_spec<detail::width_checker>(specs_.width,
- specs_.width_ref, ctx);
+ auto specs = specs_;
+ detail::handle_dynamic_spec<detail::width_checker>(specs.width,
+ specs.width_ref, ctx);
detail::handle_dynamic_spec<detail::precision_checker>(
- specs_.precision, specs_.precision_ref, ctx);
- return detail::write_int_localized(
- ctx.out(), static_cast<detail::uint64_or_128_t<T>>(t.value), 0, specs_,
- detail::digit_grouping<char>({"\3", ','}));
+ specs.precision, specs.precision_ref, ctx);
+ auto arg = detail::make_write_int_arg(t.value, specs.sign);
+ return detail::write_int(
+ ctx.out(), static_cast<detail::uint64_or_128_t<T>>(arg.abs_value),
+ arg.prefix, specs, detail::digit_grouping<char>("\3", ","));
}
};
-template <typename It, typename Sentinel, typename Char = char>
-struct join_view : detail::view {
- It begin;
- Sentinel end;
- basic_string_view<Char> sep;
-
- join_view(It b, Sentinel e, basic_string_view<Char> s)
- : begin(b), end(e), sep(s) {}
+template <typename T, typename Char> struct nested_view {
+ const formatter<T, Char>* fmt;
+ const T* value;
};
-template <typename It, typename Sentinel, typename Char>
-struct formatter<join_view<It, Sentinel, Char>, Char> {
- private:
- using value_type =
-#ifdef __cpp_lib_ranges
- std::iter_value_t<It>;
-#else
- typename std::iterator_traits<It>::value_type;
-#endif
- using context = buffer_context<Char>;
- using mapper = detail::arg_mapper<context>;
-
- template <typename T, FMT_ENABLE_IF(has_formatter<T, context>::value)>
- static auto map(const T& value) -> const T& {
- return value;
- }
- template <typename T, FMT_ENABLE_IF(!has_formatter<T, context>::value)>
- static auto map(const T& value) -> decltype(mapper().map(value)) {
- return mapper().map(value);
- }
-
- using formatter_type =
- conditional_t<is_formattable<value_type, Char>::value,
- formatter<remove_cvref_t<decltype(map(
- std::declval<const value_type&>()))>,
- Char>,
- detail::fallback_formatter<value_type, Char>>;
-
- formatter_type value_formatter_;
-
- public:
+template <typename T, typename Char>
+struct formatter<nested_view<T, Char>, Char> {
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- return value_formatter_.parse(ctx);
+ return ctx.begin();
}
-
template <typename FormatContext>
- auto format(const join_view<It, Sentinel, Char>& value,
- FormatContext& ctx) const -> decltype(ctx.out()) {
- auto it = value.begin;
- auto out = ctx.out();
- if (it != value.end) {
- out = value_formatter_.format(map(*it), ctx);
- ++it;
- while (it != value.end) {
- out = detail::copy_str<Char>(value.sep.begin(), value.sep.end(), out);
- ctx.advance_to(out);
- out = value_formatter_.format(map(*it), ctx);
- ++it;
- }
- }
- return out;
+ auto format(nested_view<T, Char> view, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ return view.fmt->format(*view.value, ctx);
}
};
-/**
- Returns a view that formats the iterator range `[begin, end)` with elements
- separated by `sep`.
- */
-template <typename It, typename Sentinel>
-auto join(It begin, Sentinel end, string_view sep) -> join_view<It, Sentinel> {
- return {begin, end, sep};
-}
-
-/**
- \rst
- Returns a view that formats `range` with elements separated by `sep`.
-
- **Example**::
-
- std::vector<int> v = {1, 2, 3};
- fmt::print("{}", fmt::join(v, ", "));
- // Output: "1, 2, 3"
-
- ``fmt::join`` applies passed format specifiers to the range elements::
+template <typename T, typename Char = char> struct nested_formatter {
+ private:
+ int width_;
+ detail::fill_t fill_;
+ align_t align_ : 4;
+ formatter<T, Char> formatter_;
- fmt::print("{:02}", fmt::join(v, ", "));
- // Output: "01, 02, 03"
- \endrst
- */
-template <typename Range>
-auto join(Range&& range, string_view sep)
- -> join_view<detail::iterator_t<Range>, detail::sentinel_t<Range>> {
- return join(std::begin(range), std::end(range), sep);
-}
+ public:
+ constexpr nested_formatter() : width_(0), align_(align_t::none) {}
+
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ auto specs = detail::dynamic_format_specs<Char>();
+ auto it = parse_format_specs(ctx.begin(), ctx.end(), specs, ctx,
+ detail::type::none_type);
+ width_ = specs.width;
+ fill_ = specs.fill;
+ align_ = specs.align;
+ ctx.advance_to(it);
+ return formatter_.parse(ctx);
+ }
+
+ template <typename FormatContext, typename F>
+ auto write_padded(FormatContext& ctx, F write) const -> decltype(ctx.out()) {
+ if (width_ == 0) return write(ctx.out());
+ auto buf = basic_memory_buffer<Char>();
+ write(basic_appender<Char>(buf));
+ auto specs = format_specs();
+ specs.width = width_;
+ specs.fill = fill_;
+ specs.align = align_;
+ return detail::write<Char>(
+ ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs);
+ }
+
+ auto nested(const T& value) const -> nested_view<T, Char> {
+ return nested_view<T, Char>{&formatter_, &value};
+ }
+};
/**
- \rst
- Converts *value* to ``std::string`` using the default format for type *T*.
-
- **Example**::
-
- #include <fmt/format.h>
-
- std::string answer = fmt::to_string(42);
- \endrst
+ * Converts `value` to `std::string` using the default format for type `T`.
+ *
+ * **Example**:
+ *
+ * std::string answer = fmt::to_string(42);
*/
-template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
+template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value &&
+ !detail::has_format_as<T>::value)>
inline auto to_string(const T& value) -> std::string {
- auto result = std::string();
- detail::write<char>(std::back_inserter(result), value);
- return result;
+ auto buffer = memory_buffer();
+ detail::write<char>(appender(buffer), value);
+ return {buffer.data(), buffer.size()};
}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
return std::basic_string<Char>(buf.data(), size);
}
-FMT_BEGIN_DETAIL_NAMESPACE
+template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value &&
+ detail::has_format_as<T>::value)>
+inline auto to_string(const T& value) -> std::string {
+ return to_string(format_as(value));
+}
+
+FMT_END_EXPORT
+
+namespace detail {
template <typename Char>
-void vformat_to(
- buffer<Char>& buf, basic_string_view<Char> fmt,
- basic_format_args<FMT_BUFFER_CONTEXT(type_identity_t<Char>)> args,
- locale_ref loc) {
- // workaround for msvc bug regarding name-lookup in module
- // link names into function scope
- using detail::arg_formatter;
- using detail::buffer_appender;
- using detail::custom_formatter;
- using detail::default_arg_formatter;
- using detail::get_arg;
- using detail::locale_ref;
- using detail::parse_format_specs;
- using detail::specs_checker;
- using detail::specs_handler;
- using detail::to_unsigned;
- using detail::type;
- using detail::write;
- auto out = buffer_appender<Char>(buf);
+void vformat_to(buffer<Char>& buf, basic_string_view<Char> fmt,
+ typename vformat_args<Char>::type args, locale_ref loc) {
+ auto out = basic_appender<Char>(buf);
if (fmt.size() == 2 && equal2(fmt.data(), "{}")) {
auto arg = args.get(0);
- if (!arg) error_handler().on_error("argument not found");
- visit_format_arg(default_arg_formatter<Char>{out, args, loc}, arg);
+ if (!arg) report_error("argument not found");
+ arg.visit(default_arg_formatter<Char>{out, args, loc});
return;
}
- struct format_handler : error_handler {
+ struct format_handler {
basic_format_parse_context<Char> parse_context;
- buffer_context<Char> context;
+ buffered_context<Char> context;
- format_handler(buffer_appender<Char> p_out, basic_string_view<Char> str,
- basic_format_args<buffer_context<Char>> p_args,
+ format_handler(basic_appender<Char> p_out, basic_string_view<Char> str,
+ basic_format_args<buffered_context<Char>> p_args,
locale_ref p_loc)
: parse_context(str), context(p_out, p_args, p_loc) {}
return parse_context.next_arg_id();
}
FMT_CONSTEXPR auto on_arg_id(int id) -> int {
- return parse_context.check_arg_id(id), id;
+ parse_context.check_arg_id(id);
+ return id;
}
FMT_CONSTEXPR auto on_arg_id(basic_string_view<Char> id) -> int {
+ parse_context.check_arg_id(id);
int arg_id = context.arg_id(id);
- if (arg_id < 0) on_error("argument not found");
+ if (arg_id < 0) report_error("argument not found");
return arg_id;
}
FMT_INLINE void on_replacement_field(int id, const Char*) {
auto arg = get_arg(context, id);
- context.advance_to(visit_format_arg(
- default_arg_formatter<Char>{context.out(), context.args(),
- context.locale()},
- arg));
+ context.advance_to(arg.visit(default_arg_formatter<Char>{
+ context.out(), context.args(), context.locale()}));
}
auto on_format_specs(int id, const Char* begin, const Char* end)
-> const Char* {
auto arg = get_arg(context, id);
- if (arg.type() == type::custom_type) {
- parse_context.advance_to(parse_context.begin() +
- (begin - &*parse_context.begin()));
- visit_format_arg(custom_formatter<Char>{parse_context, context}, arg);
+ // Not using a visitor for custom types gives better codegen.
+ if (arg.format_custom(begin, parse_context, context))
return parse_context.begin();
- }
- auto specs = basic_format_specs<Char>();
- specs_checker<specs_handler<Char>> handler(
- specs_handler<Char>(specs, parse_context, context), arg.type());
- begin = parse_format_specs(begin, end, handler);
+ auto specs = detail::dynamic_format_specs<Char>();
+ begin = parse_format_specs(begin, end, specs, parse_context, arg.type());
+ detail::handle_dynamic_spec<detail::width_checker>(
+ specs.width, specs.width_ref, context);
+ detail::handle_dynamic_spec<detail::precision_checker>(
+ specs.precision, specs.precision_ref, context);
if (begin == end || *begin != '}')
- on_error("missing '}' in format string");
- auto f = arg_formatter<Char>{context.out(), specs, context.locale()};
- context.advance_to(visit_format_arg(f, arg));
+ report_error("missing '}' in format string");
+ context.advance_to(arg.visit(
+ arg_formatter<Char>{context.out(), specs, context.locale()}));
return begin;
}
+
+ FMT_NORETURN void on_error(const char* message) { report_error(message); }
};
detail::parse_format_string<false>(fmt, format_handler(out, fmt, args, loc));
}
+FMT_BEGIN_EXPORT
+
#ifndef FMT_HEADER_ONLY
+extern template FMT_API void vformat_to(buffer<char>&, string_view,
+ typename vformat_args<>::type,
+ locale_ref);
extern template FMT_API auto thousands_sep_impl<char>(locale_ref)
-> thousands_sep_result<char>;
extern template FMT_API auto thousands_sep_impl<wchar_t>(locale_ref)
extern template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t;
#endif // FMT_HEADER_ONLY
-FMT_END_DETAIL_NAMESPACE
+FMT_END_EXPORT
+
+template <typename T, typename Char, type TYPE>
+template <typename FormatContext>
+FMT_CONSTEXPR FMT_INLINE auto native_formatter<T, Char, TYPE>::format(
+ const T& val, FormatContext& ctx) const -> decltype(ctx.out()) {
+ if (specs_.width_ref.kind == arg_id_kind::none &&
+ specs_.precision_ref.kind == arg_id_kind::none) {
+ return write<Char>(ctx.out(), val, specs_, ctx.locale());
+ }
+ auto specs = specs_;
+ handle_dynamic_spec<width_checker>(specs.width, specs.width_ref, ctx);
+ handle_dynamic_spec<precision_checker>(specs.precision, specs.precision_ref,
+ ctx);
+ return write<Char>(ctx.out(), val, specs, ctx.locale());
+}
+
+} // namespace detail
+
+FMT_BEGIN_EXPORT
+
+template <typename Char>
+struct formatter<detail::float128, Char>
+ : detail::native_formatter<detail::float128, Char,
+ detail::type::float_type> {};
#if FMT_USE_USER_DEFINED_LITERALS
inline namespace literals {
/**
- \rst
- User-defined literal equivalent of :func:`fmt::arg`.
-
- **Example**::
-
- using namespace fmt::literals;
- fmt::print("Elapsed time: {s:.2f} seconds", "s"_a=1.23);
- \endrst
+ * User-defined literal equivalent of `fmt::arg`.
+ *
+ * **Example**:
+ *
+ * using namespace fmt::literals;
+ * fmt::print("The answer is {answer}.", "answer"_a=42);
*/
# if FMT_USE_NONTYPE_TEMPLATE_ARGS
template <detail_exported::fixed_string Str> constexpr auto operator""_a() {
return detail::udl_arg<char_t, sizeof(Str.data) / sizeof(char_t), Str>();
}
# else
-constexpr auto operator"" _a(const char* s, size_t) -> detail::udl_arg<char> {
+constexpr auto operator""_a(const char* s, size_t) -> detail::udl_arg<char> {
return {s};
}
# endif
} // namespace literals
#endif // FMT_USE_USER_DEFINED_LITERALS
+FMT_API auto vformat(string_view fmt, format_args args) -> std::string;
+
+/**
+ * Formats `args` according to specifications in `fmt` and returns the result
+ * as a string.
+ *
+ * **Example**:
+ *
+ * #include <fmt/format.h>
+ * std::string message = fmt::format("The answer is {}.", 42);
+ */
+template <typename... T>
+FMT_NODISCARD FMT_INLINE auto format(format_string<T...> fmt, T&&... args)
+ -> std::string {
+ return vformat(fmt, fmt::make_format_args(args...));
+}
+
template <typename Locale, FMT_ENABLE_IF(detail::is_locale<Locale>::value)>
inline auto vformat(const Locale& loc, string_view fmt, format_args args)
-> std::string {
FMT_ENABLE_IF(detail::is_locale<Locale>::value)>
inline auto format(const Locale& loc, format_string<T...> fmt, T&&... args)
-> std::string {
- return vformat(loc, string_view(fmt), fmt::make_format_args(args...));
+ return fmt::vformat(loc, string_view(fmt), fmt::make_format_args(args...));
}
template <typename OutputIt, typename Locale,
using detail::get_buffer;
auto&& buf = get_buffer<char>(out);
detail::vformat_to(buf, fmt, args, detail::locale_ref(loc));
- return detail::get_iterator(buf);
+ return detail::get_iterator(buf, out);
}
template <typename OutputIt, typename Locale, typename... T,
return vformat_to(out, loc, fmt, fmt::make_format_args(args...));
}
-FMT_MODULE_EXPORT_END
+template <typename Locale, typename... T,
+ FMT_ENABLE_IF(detail::is_locale<Locale>::value)>
+FMT_NODISCARD FMT_INLINE auto formatted_size(const Locale& loc,
+ format_string<T...> fmt,
+ T&&... args) -> size_t {
+ auto buf = detail::counting_buffer<>();
+ detail::vformat_to<char>(buf, fmt, fmt::make_format_args(args...),
+ detail::locale_ref(loc));
+ return buf.count();
+}
+
+FMT_END_EXPORT
+
FMT_END_NAMESPACE
#ifdef FMT_HEADER_ONLY
# define FMT_FUNC
#endif
+// Restore _LIBCPP_REMOVE_TRANSITIVE_INCLUDES.
+#ifdef FMT_REMOVE_TRANSITIVE_INCLUDES
+# undef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
+#endif
+
#endif // FMT_FORMAT_H_
--- /dev/null
+// Formatting library for C++ - optional OS-specific functionality
+//
+// Copyright (c) 2012 - 2016, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+// Disable bogus MSVC warnings.
+#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER)
+# define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "os.h"
+
+#ifndef FMT_MODULE
+# include <climits>
+
+# if FMT_USE_FCNTL
+# include <sys/stat.h>
+# include <sys/types.h>
+
+# ifdef _WRS_KERNEL // VxWorks7 kernel
+# include <ioLib.h> // getpagesize
+# endif
+
+# ifndef _WIN32
+# include <unistd.h>
+# else
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+# endif
+# include <io.h>
+# endif // _WIN32
+# endif // FMT_USE_FCNTL
+
+# ifdef _WIN32
+# include <windows.h>
+# endif
+#endif
+
+#ifdef _WIN32
+# ifndef S_IRUSR
+# define S_IRUSR _S_IREAD
+# endif
+# ifndef S_IWUSR
+# define S_IWUSR _S_IWRITE
+# endif
+# ifndef S_IRGRP
+# define S_IRGRP 0
+# endif
+# ifndef S_IWGRP
+# define S_IWGRP 0
+# endif
+# ifndef S_IROTH
+# define S_IROTH 0
+# endif
+# ifndef S_IWOTH
+# define S_IWOTH 0
+# endif
+#endif
+
+namespace {
+#ifdef _WIN32
+// Return type of read and write functions.
+using rwresult = int;
+
+// On Windows the count argument to read and write is unsigned, so convert
+// it from size_t preventing integer overflow.
+inline unsigned convert_rwcount(std::size_t count) {
+ return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX;
+}
+#elif FMT_USE_FCNTL
+// Return type of read and write functions.
+using rwresult = ssize_t;
+
+inline std::size_t convert_rwcount(std::size_t count) { return count; }
+#endif
+} // namespace
+
+FMT_BEGIN_NAMESPACE
+
+#ifdef _WIN32
+namespace detail {
+
+class system_message {
+ system_message(const system_message&) = delete;
+ void operator=(const system_message&) = delete;
+
+ unsigned long result_;
+ wchar_t* message_;
+
+ static bool is_whitespace(wchar_t c) noexcept {
+ return c == L' ' || c == L'\n' || c == L'\r' || c == L'\t' || c == L'\0';
+ }
+
+ public:
+ explicit system_message(unsigned long error_code)
+ : result_(0), message_(nullptr) {
+ result_ = FormatMessageW(
+ FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS,
+ nullptr, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+ reinterpret_cast<wchar_t*>(&message_), 0, nullptr);
+ if (result_ != 0) {
+ while (result_ != 0 && is_whitespace(message_[result_ - 1])) {
+ --result_;
+ }
+ }
+ }
+ ~system_message() { LocalFree(message_); }
+ explicit operator bool() const noexcept { return result_ != 0; }
+ operator basic_string_view<wchar_t>() const noexcept {
+ return basic_string_view<wchar_t>(message_, result_);
+ }
+};
+
+class utf8_system_category final : public std::error_category {
+ public:
+ const char* name() const noexcept override { return "system"; }
+ std::string message(int error_code) const override {
+ auto&& msg = system_message(error_code);
+ if (msg) {
+ auto utf8_message = to_utf8<wchar_t>();
+ if (utf8_message.convert(msg)) {
+ return utf8_message.str();
+ }
+ }
+ return "unknown error";
+ }
+};
+
+} // namespace detail
+
+FMT_API const std::error_category& system_category() noexcept {
+ static const detail::utf8_system_category category;
+ return category;
+}
+
+std::system_error vwindows_error(int err_code, string_view format_str,
+ format_args args) {
+ auto ec = std::error_code(err_code, system_category());
+ return std::system_error(ec, vformat(format_str, args));
+}
+
+void detail::format_windows_error(detail::buffer<char>& out, int error_code,
+ const char* message) noexcept {
+ FMT_TRY {
+ auto&& msg = system_message(error_code);
+ if (msg) {
+ auto utf8_message = to_utf8<wchar_t>();
+ if (utf8_message.convert(msg)) {
+ fmt::format_to(appender(out), FMT_STRING("{}: {}"), message,
+ string_view(utf8_message));
+ return;
+ }
+ }
+ }
+ FMT_CATCH(...) {}
+ format_error_code(out, error_code, message);
+}
+
+void report_windows_error(int error_code, const char* message) noexcept {
+ report_error(detail::format_windows_error, error_code, message);
+}
+#endif // _WIN32
+
+buffered_file::~buffered_file() noexcept {
+ if (file_ && FMT_SYSTEM(fclose(file_)) != 0)
+ report_system_error(errno, "cannot close file");
+}
+
+buffered_file::buffered_file(cstring_view filename, cstring_view mode) {
+ FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())),
+ nullptr);
+ if (!file_)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot open file {}"),
+ filename.c_str()));
+}
+
+void buffered_file::close() {
+ if (!file_) return;
+ int result = FMT_SYSTEM(fclose(file_));
+ file_ = nullptr;
+ if (result != 0)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot close file")));
+}
+
+int buffered_file::descriptor() const {
+#ifdef FMT_HAS_SYSTEM
+ // fileno is a macro on OpenBSD.
+# ifdef fileno
+# undef fileno
+# endif
+ int fd = FMT_POSIX_CALL(fileno(file_));
+#elif defined(_WIN32)
+ int fd = _fileno(file_);
+#else
+ int fd = fileno(file_);
+#endif
+ if (fd == -1)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot get file descriptor")));
+ return fd;
+}
+
+#if FMT_USE_FCNTL
+# ifdef _WIN32
+using mode_t = int;
+# endif
+
+constexpr mode_t default_open_mode =
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
+
+file::file(cstring_view path, int oflag) {
+# if defined(_WIN32) && !defined(__MINGW32__)
+ fd_ = -1;
+ auto converted = detail::utf8_to_utf16(string_view(path.c_str()));
+ *this = file::open_windows_file(converted.c_str(), oflag);
+# else
+ FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, default_open_mode)));
+ if (fd_ == -1)
+ FMT_THROW(
+ system_error(errno, FMT_STRING("cannot open file {}"), path.c_str()));
+# endif
+}
+
+file::~file() noexcept {
+ // Don't retry close in case of EINTR!
+ // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+ if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0)
+ report_system_error(errno, "cannot close file");
+}
+
+void file::close() {
+ if (fd_ == -1) return;
+ // Don't retry close in case of EINTR!
+ // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+ int result = FMT_POSIX_CALL(close(fd_));
+ fd_ = -1;
+ if (result != 0)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot close file")));
+}
+
+long long file::size() const {
+# ifdef _WIN32
+ // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
+ // is less than 0x0500 as is the case with some default MinGW builds.
+ // Both functions support large file sizes.
+ DWORD size_upper = 0;
+ HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
+ DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
+ if (size_lower == INVALID_FILE_SIZE) {
+ DWORD error = GetLastError();
+ if (error != NO_ERROR)
+ FMT_THROW(windows_error(GetLastError(), "cannot get file size"));
+ }
+ unsigned long long long_size = size_upper;
+ return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower;
+# else
+ using Stat = struct stat;
+ Stat file_stat = Stat();
+ if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot get file attributes")));
+ static_assert(sizeof(long long) >= sizeof(file_stat.st_size),
+ "return type of file::size is not large enough");
+ return file_stat.st_size;
+# endif
+}
+
+std::size_t file::read(void* buffer, std::size_t count) {
+ rwresult result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
+ if (result < 0)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot read from file")));
+ return detail::to_unsigned(result);
+}
+
+std::size_t file::write(const void* buffer, std::size_t count) {
+ rwresult result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
+ if (result < 0)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
+ return detail::to_unsigned(result);
+}
+
+file file::dup(int fd) {
+ // Don't retry as dup doesn't return EINTR.
+ // http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html
+ int new_fd = FMT_POSIX_CALL(dup(fd));
+ if (new_fd == -1)
+ FMT_THROW(system_error(
+ errno, FMT_STRING("cannot duplicate file descriptor {}"), fd));
+ return file(new_fd);
+}
+
+void file::dup2(int fd) {
+ int result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+ if (result == -1) {
+ FMT_THROW(system_error(
+ errno, FMT_STRING("cannot duplicate file descriptor {} to {}"), fd_,
+ fd));
+ }
+}
+
+void file::dup2(int fd, std::error_code& ec) noexcept {
+ int result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+ if (result == -1) ec = std::error_code(errno, std::generic_category());
+}
+
+buffered_file file::fdopen(const char* mode) {
+// Don't retry as fdopen doesn't return EINTR.
+# if defined(__MINGW32__) && defined(_POSIX_)
+ FILE* f = ::fdopen(fd_, mode);
+# else
+ FILE* f = FMT_POSIX_CALL(fdopen(fd_, mode));
+# endif
+ if (!f) {
+ FMT_THROW(system_error(
+ errno, FMT_STRING("cannot associate stream with file descriptor")));
+ }
+ buffered_file bf(f);
+ fd_ = -1;
+ return bf;
+}
+
+# if defined(_WIN32) && !defined(__MINGW32__)
+file file::open_windows_file(wcstring_view path, int oflag) {
+ int fd = -1;
+ auto err = _wsopen_s(&fd, path.c_str(), oflag, _SH_DENYNO, default_open_mode);
+ if (fd == -1) {
+ FMT_THROW(system_error(err, FMT_STRING("cannot open file {}"),
+ detail::to_utf8<wchar_t>(path.c_str()).c_str()));
+ }
+ return file(fd);
+}
+# endif
+
+pipe::pipe() {
+ int fds[2] = {};
+# ifdef _WIN32
+ // Make the default pipe capacity same as on Linux 2.6.11+.
+ enum { DEFAULT_CAPACITY = 65536 };
+ int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
+# else
+ // Don't retry as the pipe function doesn't return EINTR.
+ // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
+ int result = FMT_POSIX_CALL(pipe(fds));
+# endif
+ if (result != 0)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot create pipe")));
+ // The following assignments don't throw.
+ read_end = file(fds[0]);
+ write_end = file(fds[1]);
+}
+
+# if !defined(__MSDOS__)
+long getpagesize() {
+# ifdef _WIN32
+ SYSTEM_INFO si;
+ GetSystemInfo(&si);
+ return si.dwPageSize;
+# else
+# ifdef _WRS_KERNEL
+ long size = FMT_POSIX_CALL(getpagesize());
+# else
+ long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE));
+# endif
+
+ if (size < 0)
+ FMT_THROW(system_error(errno, FMT_STRING("cannot get memory page size")));
+ return size;
+# endif
+}
+# endif
+
+namespace detail {
+
+void file_buffer::grow(buffer<char>& buf, size_t) {
+ if (buf.size() == buf.capacity()) static_cast<file_buffer&>(buf).flush();
+}
+
+file_buffer::file_buffer(cstring_view path, const ostream_params& params)
+ : buffer<char>(grow), file_(path, params.oflag) {
+ set(new char[params.buffer_size], params.buffer_size);
+}
+
+file_buffer::file_buffer(file_buffer&& other) noexcept
+ : buffer<char>(grow, other.data(), other.size(), other.capacity()),
+ file_(std::move(other.file_)) {
+ other.clear();
+ other.set(nullptr, 0);
+}
+
+file_buffer::~file_buffer() {
+ flush();
+ delete[] data();
+}
+} // namespace detail
+
+ostream::~ostream() = default;
+#endif // FMT_USE_FCNTL
+FMT_END_NAMESPACE
#ifndef FMT_OS_H_
#define FMT_OS_H_
-#include <cerrno>
-#include <cstddef>
-#include <cstdio>
-#include <system_error> // std::system_error
+#include "format.h"
-#if defined __APPLE__ || defined(__FreeBSD__)
-# include <xlocale.h> // for LC_NUMERIC_MASK on OS X
-#endif
+#ifndef FMT_MODULE
+# include <cerrno>
+# include <cstddef>
+# include <cstdio>
+# include <system_error> // std::system_error
-#include "format.h"
+# if FMT_HAS_INCLUDE(<xlocale.h>)
+# include <xlocale.h> // LC_NUMERIC_MASK on macOS
+# endif
+#endif // FMT_MODULE
#ifndef FMT_USE_FCNTL
// UWP doesn't provide _pipe.
// Calls to system functions are wrapped in FMT_SYSTEM for testability.
#ifdef FMT_SYSTEM
+# define FMT_HAS_SYSTEM
# define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
#else
# define FMT_SYSTEM(call) ::call
#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
FMT_BEGIN_NAMESPACE
-FMT_MODULE_EXPORT_BEGIN
+FMT_BEGIN_EXPORT
/**
- \rst
- A reference to a null-terminated string. It can be constructed from a C
- string or ``std::string``.
-
- You can use one of the following type aliases for common character types:
-
- +---------------+-----------------------------+
- | Type | Definition |
- +===============+=============================+
- | cstring_view | basic_cstring_view<char> |
- +---------------+-----------------------------+
- | wcstring_view | basic_cstring_view<wchar_t> |
- +---------------+-----------------------------+
-
- This class is most useful as a parameter type to allow passing
- different types of strings to a function, for example::
-
- template <typename... Args>
- std::string format(cstring_view format_str, const Args & ... args);
-
- format("{}", 42);
- format(std::string("{}"), 42);
- \endrst
+ * A reference to a null-terminated string. It can be constructed from a C
+ * string or `std::string`.
+ *
+ * You can use one of the following type aliases for common character types:
+ *
+ * +---------------+-----------------------------+
+ * | Type | Definition |
+ * +===============+=============================+
+ * | cstring_view | basic_cstring_view<char> |
+ * +---------------+-----------------------------+
+ * | wcstring_view | basic_cstring_view<wchar_t> |
+ * +---------------+-----------------------------+
+ *
+ * This class is most useful as a parameter type for functions that wrap C APIs.
*/
template <typename Char> class basic_cstring_view {
private:
const Char* data_;
public:
- /** Constructs a string reference object from a C string. */
+ /// Constructs a string reference object from a C string.
basic_cstring_view(const Char* s) : data_(s) {}
- /**
- \rst
- Constructs a string reference from an ``std::string`` object.
- \endrst
- */
+ /// Constructs a string reference from an `std::string` object.
basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {}
- /** Returns the pointer to a C string. */
- const Char* c_str() const { return data_; }
+ /// Returns the pointer to a C string.
+ auto c_str() const -> const Char* { return data_; }
};
using cstring_view = basic_cstring_view<char>;
using wcstring_view = basic_cstring_view<wchar_t>;
-template <typename Char> struct formatter<std::error_code, Char> {
- template <typename ParseContext>
- FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- return ctx.begin();
- }
-
- template <typename FormatContext>
- FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const
- -> decltype(ctx.out()) {
- auto out = ctx.out();
- out = detail::write_bytes(out, ec.category().name(),
- basic_format_specs<Char>());
- out = detail::write<Char>(out, Char(':'));
- out = detail::write<Char>(out, ec.value());
- return out;
- }
-};
-
#ifdef _WIN32
FMT_API const std::error_category& system_category() noexcept;
-FMT_BEGIN_DETAIL_NAMESPACE
-// A converter from UTF-16 to UTF-8.
-// It is only provided for Windows since other systems support UTF-8 natively.
-class utf16_to_utf8 {
- private:
- memory_buffer buffer_;
-
- public:
- utf16_to_utf8() {}
- FMT_API explicit utf16_to_utf8(basic_string_view<wchar_t> s);
- operator string_view() const { return string_view(&buffer_[0], size()); }
- size_t size() const { return buffer_.size() - 1; }
- const char* c_str() const { return &buffer_[0]; }
- std::string str() const { return std::string(&buffer_[0], size()); }
-
- // Performs conversion returning a system error code instead of
- // throwing exception on conversion error. This method may still throw
- // in case of memory allocation error.
- FMT_API int convert(basic_string_view<wchar_t> s);
-};
-
+namespace detail {
FMT_API void format_windows_error(buffer<char>& out, int error_code,
const char* message) noexcept;
-FMT_END_DETAIL_NAMESPACE
+}
FMT_API std::system_error vwindows_error(int error_code, string_view format_str,
format_args args);
/**
- \rst
- Constructs a :class:`std::system_error` object with the description
- of the form
-
- .. parsed-literal::
- *<message>*: *<system-message>*
-
- where *<message>* is the formatted message and *<system-message>* is the
- system message corresponding to the error code.
- *error_code* is a Windows error code as given by ``GetLastError``.
- If *error_code* is not a valid error code such as -1, the system message
- will look like "error -1".
-
- **Example**::
-
- // This throws a system_error with the description
- // cannot open file 'madeup': The system cannot find the file specified.
- // or similar (system message may vary).
- const char *filename = "madeup";
- LPOFSTRUCT of = LPOFSTRUCT();
- HFILE file = OpenFile(filename, &of, OF_READ);
- if (file == HFILE_ERROR) {
- throw fmt::windows_error(GetLastError(),
- "cannot open file '{}'", filename);
- }
- \endrst
-*/
+ * Constructs a `std::system_error` object with the description of the form
+ *
+ * <message>: <system-message>
+ *
+ * where `<message>` is the formatted message and `<system-message>` is the
+ * system message corresponding to the error code.
+ * `error_code` is a Windows error code as given by `GetLastError`.
+ * If `error_code` is not a valid error code such as -1, the system message
+ * will look like "error -1".
+ *
+ * **Example**:
+ *
+ * // This throws a system_error with the description
+ * // cannot open file 'madeup': The system cannot find the file
+ * specified.
+ * // or similar (system message may vary).
+ * const char *filename = "madeup";
+ * LPOFSTRUCT of = LPOFSTRUCT();
+ * HFILE file = OpenFile(filename, &of, OF_READ);
+ * if (file == HFILE_ERROR) {
+ * throw fmt::windows_error(GetLastError(),
+ * "cannot open file '{}'", filename);
+ * }
+ */
template <typename... Args>
std::system_error windows_error(int error_code, string_view message,
const Args&... args) {
// Can be used to report errors from destructors.
FMT_API void report_windows_error(int error_code, const char* message) noexcept;
#else
-inline const std::error_category& system_category() noexcept {
+inline auto system_category() noexcept -> const std::error_category& {
return std::system_category();
}
#endif // _WIN32
other.file_ = nullptr;
}
- buffered_file& operator=(buffered_file&& other) {
+ auto operator=(buffered_file&& other) -> buffered_file& {
close();
file_ = other.file_;
other.file_ = nullptr;
FMT_API void close();
// Returns the pointer to a FILE object representing this file.
- FILE* get() const noexcept { return file_; }
-
- FMT_API int descriptor() const;
+ auto get() const noexcept -> FILE* { return file_; }
- void vprint(string_view format_str, format_args args) {
- fmt::vprint(file_, format_str, args);
- }
+ FMT_API auto descriptor() const -> int;
- template <typename... Args>
- inline void print(string_view format_str, const Args&... args) {
- vprint(format_str, fmt::make_format_args(args...));
+ template <typename... T>
+ inline void print(string_view fmt, const T&... args) {
+ const auto& vargs = fmt::make_format_args(args...);
+ detail::is_locking<T...>() ? fmt::vprint_buffered(file_, fmt, vargs)
+ : fmt::vprint(file_, fmt, vargs);
}
};
#if FMT_USE_FCNTL
+
// A file. Closed file is represented by a file object with descriptor -1.
// Methods that are not declared with noexcept may throw
// fmt::system_error in case of failure. Note that some errors such as
// Constructs a file object with a given descriptor.
explicit file(int fd) : fd_(fd) {}
+ friend struct pipe;
+
public:
// Possible values for the oflag argument to the constructor.
enum {
file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; }
// Move assignment is not noexcept because close may throw.
- file& operator=(file&& other) {
+ auto operator=(file&& other) -> file& {
close();
fd_ = other.fd_;
other.fd_ = -1;
~file() noexcept;
// Returns the file descriptor.
- int descriptor() const noexcept { return fd_; }
+ auto descriptor() const noexcept -> int { return fd_; }
// Closes the file.
void close();
// Returns the file size. The size has signed type for consistency with
// stat::st_size.
- long long size() const;
+ auto size() const -> long long;
// Attempts to read count bytes from the file into the specified buffer.
- size_t read(void* buffer, size_t count);
+ auto read(void* buffer, size_t count) -> size_t;
// Attempts to write count bytes from the specified buffer to the file.
- size_t write(const void* buffer, size_t count);
+ auto write(const void* buffer, size_t count) -> size_t;
// Duplicates a file descriptor with the dup function and returns
// the duplicate as a file object.
- static file dup(int fd);
+ static auto dup(int fd) -> file;
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
// necessary.
void dup2(int fd, std::error_code& ec) noexcept;
- // Creates a pipe setting up read_end and write_end file objects for reading
- // and writing respectively.
- static void pipe(file& read_end, file& write_end);
-
// Creates a buffered_file object associated with this file and detaches
// this file object from the file.
- buffered_file fdopen(const char* mode);
+ auto fdopen(const char* mode) -> buffered_file;
+
+# if defined(_WIN32) && !defined(__MINGW32__)
+ // Opens a file and constructs a file object representing this file by
+ // wcstring_view filename. Windows only.
+ static file open_windows_file(wcstring_view path, int oflag);
+# endif
+};
+
+struct FMT_API pipe {
+ file read_end;
+ file write_end;
+
+ // Creates a pipe setting up read_end and write_end file objects for reading
+ // and writing respectively.
+ pipe();
};
// Returns the memory page size.
-long getpagesize();
+auto getpagesize() -> long;
-FMT_BEGIN_DETAIL_NAMESPACE
+namespace detail {
struct buffer_size {
buffer_size() = default;
size_t value = 0;
- buffer_size operator=(size_t val) const {
+ auto operator=(size_t val) const -> buffer_size {
auto bs = buffer_size();
bs.value = val;
return bs;
# endif
};
-FMT_END_DETAIL_NAMESPACE
-
-// Added {} below to work around default constructor error known to
-// occur in Xcode versions 7.2.1 and 8.2.1.
-constexpr detail::buffer_size buffer_size{};
-
-/** A fast output stream which is not thread-safe. */
-class FMT_API ostream final : private detail::buffer<char> {
+class file_buffer final : public buffer<char> {
private:
file file_;
- void grow(size_t) override;
-
- ostream(cstring_view path, const detail::ostream_params& params)
- : file_(path, params.oflag) {
- set(new char[params.buffer_size], params.buffer_size);
- }
+ FMT_API static void grow(buffer<char>& buf, size_t);
public:
- ostream(ostream&& other)
- : detail::buffer<char>(other.data(), other.size(), other.capacity()),
- file_(std::move(other.file_)) {
- other.clear();
- other.set(nullptr, 0);
- }
- ~ostream() {
- flush();
- delete[] data();
- }
+ FMT_API file_buffer(cstring_view path, const ostream_params& params);
+ FMT_API file_buffer(file_buffer&& other) noexcept;
+ FMT_API ~file_buffer();
void flush() {
if (size() == 0) return;
- file_.write(data(), size());
+ file_.write(data(), size() * sizeof(data()[0]));
clear();
}
- template <typename... T>
- friend ostream output_file(cstring_view path, T... params);
-
void close() {
flush();
file_.close();
}
+};
- /**
- Formats ``args`` according to specifications in ``fmt`` and writes the
- output to the file.
- */
+} // namespace detail
+
+constexpr auto buffer_size = detail::buffer_size();
+
+/// A fast output stream for writing from a single thread. Writing from
+/// multiple threads without external synchronization may result in a data race.
+class FMT_API ostream {
+ private:
+ FMT_MSC_WARNING(suppress : 4251)
+ detail::file_buffer buffer_;
+
+ ostream(cstring_view path, const detail::ostream_params& params)
+ : buffer_(path, params) {}
+
+ public:
+ ostream(ostream&& other) : buffer_(std::move(other.buffer_)) {}
+
+ ~ostream();
+
+ void flush() { buffer_.flush(); }
+
+ template <typename... T>
+ friend auto output_file(cstring_view path, T... params) -> ostream;
+
+ void close() { buffer_.close(); }
+
+ /// Formats `args` according to specifications in `fmt` and writes the
+ /// output to the file.
template <typename... T> void print(format_string<T...> fmt, T&&... args) {
- vformat_to(detail::buffer_appender<char>(*this), fmt,
- fmt::make_format_args(args...));
+ vformat_to(appender(buffer_), fmt, fmt::make_format_args(args...));
}
};
/**
- \rst
- Opens a file for writing. Supported parameters passed in *params*:
-
- * ``<integer>``: Flags passed to `open
- <https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html>`_
- (``file::WRONLY | file::CREATE | file::TRUNC`` by default)
- * ``buffer_size=<integer>``: Output buffer size
-
- **Example**::
-
- auto out = fmt::output_file("guide.txt");
- out.print("Don't {}", "Panic");
- \endrst
+ * Opens a file for writing. Supported parameters passed in `params`:
+ *
+ * - `<integer>`: Flags passed to [open](
+ * https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html)
+ * (`file::WRONLY | file::CREATE | file::TRUNC` by default)
+ * - `buffer_size=<integer>`: Output buffer size
+ *
+ * **Example**:
+ *
+ * auto out = fmt::output_file("guide.txt");
+ * out.print("Don't {}", "Panic");
*/
template <typename... T>
-inline ostream output_file(cstring_view path, T... params) {
+inline auto output_file(cstring_view path, T... params) -> ostream {
return {path, detail::ostream_params(params...)};
}
#endif // FMT_USE_FCNTL
-FMT_MODULE_EXPORT_END
+FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_OS_H_
#ifndef FMT_OSTREAM_H_
#define FMT_OSTREAM_H_
-#include <fstream>
-#include <ostream>
-#if defined(_WIN32) && defined(__GLIBCXX__)
-# include <ext/stdio_filebuf.h>
-# include <ext/stdio_sync_filebuf.h>
-#elif defined(_WIN32) && defined(_LIBCPP_VERSION)
-# include <__std_stream>
+#ifndef FMT_MODULE
+# include <fstream> // std::filebuf
#endif
-#include "format.h"
-
-FMT_BEGIN_NAMESPACE
+#ifdef _WIN32
+# ifdef __GLIBCXX__
+# include <ext/stdio_filebuf.h>
+# include <ext/stdio_sync_filebuf.h>
+# endif
+# include <io.h>
+#endif
-template <typename OutputIt, typename Char> class basic_printf_context;
+#include "chrono.h" // formatbuf
+FMT_BEGIN_NAMESPACE
namespace detail {
-// Checks if T has a user-defined operator<<.
-template <typename T, typename Char, typename Enable = void>
-class is_streamable {
- private:
- template <typename U>
- static auto test(int)
- -> bool_constant<sizeof(std::declval<std::basic_ostream<Char>&>()
- << std::declval<U>()) != 0>;
-
- template <typename> static auto test(...) -> std::false_type;
-
- using result = decltype(test<T>(0));
-
- public:
- is_streamable() = default;
-
- static const bool value = result::value;
-};
-
-// Formatting of built-in types and arrays is intentionally disabled because
-// it's handled by standard (non-ostream) formatters.
-template <typename T, typename Char>
-struct is_streamable<
- T, Char,
- enable_if_t<
- std::is_arithmetic<T>::value || std::is_array<T>::value ||
- std::is_pointer<T>::value || std::is_same<T, char8_type>::value ||
- std::is_convertible<T, fmt::basic_string_view<Char>>::value ||
- std::is_same<T, std_string_view<Char>>::value ||
- (std::is_convertible<T, int>::value && !std::is_enum<T>::value)>>
- : std::false_type {};
-
// Generate a unique explicit instantion in every translation unit using a tag
// type in an anonymous namespace.
namespace {
struct file_access_tag {};
} // namespace
-template <class Tag, class BufType, FILE* BufType::*FileMemberPtr>
+template <typename Tag, typename BufType, FILE* BufType::*FileMemberPtr>
class file_access {
friend auto get_file(BufType& obj) -> FILE* { return obj.*FileMemberPtr; }
};
template class file_access<file_access_tag, std::filebuf,
&std::filebuf::_Myfile>;
auto get_file(std::filebuf&) -> FILE*;
-#elif defined(_WIN32) && defined(_LIBCPP_VERSION)
-template class file_access<file_access_tag, std::__stdoutbuf<char>,
- &std::__stdoutbuf<char>::__file_>;
-auto get_file(std::__stdoutbuf<char>&) -> FILE*;
#endif
-inline bool write_ostream_unicode(std::ostream& os, fmt::string_view data) {
-#if FMT_MSC_VERSION
+inline auto write_ostream_unicode(std::ostream& os, fmt::string_view data)
+ -> bool {
+ FILE* f = nullptr;
+#if FMT_MSC_VERSION && FMT_USE_RTTI
if (auto* buf = dynamic_cast<std::filebuf*>(os.rdbuf()))
- if (FILE* f = get_file(*buf)) return write_console(f, data);
-#elif defined(_WIN32) && defined(__GLIBCXX__)
+ f = get_file(*buf);
+ else
+ return false;
+#elif defined(_WIN32) && defined(__GLIBCXX__) && FMT_USE_RTTI
auto* rdbuf = os.rdbuf();
- FILE* c_file;
- if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char>*>(rdbuf))
- c_file = fbuf->file();
+ if (auto* sfbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char>*>(rdbuf))
+ f = sfbuf->file();
else if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_filebuf<char>*>(rdbuf))
- c_file = fbuf->file();
+ f = fbuf->file();
else
return false;
- if (c_file) return write_console(c_file, data);
-#elif defined(_WIN32) && defined(_LIBCPP_VERSION)
- if (auto* buf = dynamic_cast<std::__stdoutbuf<char>*>(os.rdbuf()))
- if (FILE* f = get_file(*buf)) return write_console(f, data);
#else
- ignore_unused(os, data);
+ ignore_unused(os, data, f);
+#endif
+#ifdef _WIN32
+ if (f) {
+ int fd = _fileno(f);
+ if (_isatty(fd)) {
+ os.flush();
+ return write_console(fd, data);
+ }
+ }
#endif
return false;
}
-inline bool write_ostream_unicode(std::wostream&,
- fmt::basic_string_view<wchar_t>) {
+inline auto write_ostream_unicode(std::wostream&,
+ fmt::basic_string_view<wchar_t>) -> bool {
return false;
}
}
template <typename Char, typename T>
-void format_value(buffer<Char>& buf, const T& value,
- locale_ref loc = locale_ref()) {
+void format_value(buffer<Char>& buf, const T& value) {
auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf);
auto&& output = std::basic_ostream<Char>(&format_buf);
#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
- if (loc) output.imbue(loc.get<std::locale>());
+ output.imbue(std::locale::classic()); // The default is always unlocalized.
#endif
output << value;
output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
}
-template <typename T> struct streamed_view { const T& value; };
+template <typename T> struct streamed_view {
+ const T& value;
+};
} // namespace detail
struct basic_ostream_formatter : formatter<basic_string_view<Char>, Char> {
void set_debug_format() = delete;
- template <typename T, typename OutputIt>
- auto format(const T& value, basic_format_context<OutputIt, Char>& ctx) const
- -> OutputIt {
+ template <typename T, typename Context>
+ auto format(const T& value, Context& ctx) const -> decltype(ctx.out()) {
auto buffer = basic_memory_buffer<Char>();
- format_value(buffer, value, ctx.locale());
+ detail::format_value(buffer, value);
return formatter<basic_string_view<Char>, Char>::format(
{buffer.data(), buffer.size()}, ctx);
}
template <typename T, typename Char>
struct formatter<detail::streamed_view<T>, Char>
: basic_ostream_formatter<Char> {
- template <typename OutputIt>
- auto format(detail::streamed_view<T> view,
- basic_format_context<OutputIt, Char>& ctx) const -> OutputIt {
+ template <typename Context>
+ auto format(detail::streamed_view<T> view, Context& ctx) const
+ -> decltype(ctx.out()) {
return basic_ostream_formatter<Char>::format(view.value, ctx);
}
};
/**
- \rst
- Returns a view that formats `value` via an ostream ``operator<<``.
-
- **Example**::
-
- fmt::print("Current thread id: {}\n",
- fmt::streamed(std::this_thread::get_id()));
- \endrst
+ * Returns a view that formats `value` via an ostream `operator<<`.
+ *
+ * **Example**:
+ *
+ * fmt::print("Current thread id: {}\n",
+ * fmt::streamed(std::this_thread::get_id()));
*/
template <typename T>
-auto streamed(const T& value) -> detail::streamed_view<T> {
+constexpr auto streamed(const T& value) -> detail::streamed_view<T> {
return {value};
}
namespace detail {
-// Formats an object of type T that has an overloaded ostream operator<<.
-template <typename T, typename Char>
-struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>>
- : basic_ostream_formatter<Char> {
- using basic_ostream_formatter<Char>::format;
-};
-
inline void vprint_directly(std::ostream& os, string_view format_str,
format_args args) {
auto buffer = memory_buffer();
} // namespace detail
-FMT_MODULE_EXPORT template <typename Char>
+FMT_EXPORT template <typename Char>
void vprint(std::basic_ostream<Char>& os,
basic_string_view<type_identity_t<Char>> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+ typename detail::vformat_args<Char>::type args) {
auto buffer = basic_memory_buffer<Char>();
detail::vformat_to(buffer, format_str, args);
if (detail::write_ostream_unicode(os, {buffer.data(), buffer.size()})) return;
}
/**
- \rst
- Prints formatted data to the stream *os*.
-
- **Example**::
-
- fmt::print(cerr, "Don't {}!", "panic");
- \endrst
+ * Prints formatted data to the stream `os`.
+ *
+ * **Example**:
+ *
+ * fmt::print(cerr, "Don't {}!", "panic");
*/
-FMT_MODULE_EXPORT template <typename... T>
+FMT_EXPORT template <typename... T>
void print(std::ostream& os, format_string<T...> fmt, T&&... args) {
const auto& vargs = fmt::make_format_args(args...);
- if (detail::is_utf8())
+ if (detail::use_utf8())
vprint(os, fmt, vargs);
else
detail::vprint_directly(os, fmt, vargs);
}
-FMT_MODULE_EXPORT
+FMT_EXPORT
template <typename... Args>
void print(std::wostream& os,
basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
Args&&... args) {
- vprint(os, fmt, fmt::make_format_args<buffer_context<wchar_t>>(args...));
+ vprint(os, fmt, fmt::make_format_args<buffered_context<wchar_t>>(args...));
+}
+
+FMT_EXPORT template <typename... T>
+void println(std::ostream& os, format_string<T...> fmt, T&&... args) {
+ fmt::print(os, "{}\n", fmt::format(fmt, std::forward<T>(args)...));
+}
+
+FMT_EXPORT
+template <typename... Args>
+void println(std::wostream& os,
+ basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
+ Args&&... args) {
+ print(os, L"{}\n", fmt::format(fmt, std::forward<Args>(args)...));
}
FMT_END_NAMESPACE
#ifndef FMT_PRINTF_H_
#define FMT_PRINTF_H_
-#include <algorithm> // std::max
-#include <limits> // std::numeric_limits
+#ifndef FMT_MODULE
+# include <algorithm> // std::max
+# include <limits> // std::numeric_limits
+#endif
#include "format.h"
FMT_BEGIN_NAMESPACE
-FMT_MODULE_EXPORT_BEGIN
+FMT_BEGIN_EXPORT
-template <typename T> struct printf_formatter { printf_formatter() = delete; };
-
-template <typename Char>
-class basic_printf_parse_context : public basic_format_parse_context<Char> {
- using basic_format_parse_context<Char>::basic_format_parse_context;
+template <typename T> struct printf_formatter {
+ printf_formatter() = delete;
};
-template <typename OutputIt, typename Char> class basic_printf_context {
+template <typename Char> class basic_printf_context {
private:
- OutputIt out_;
+ basic_appender<Char> out_;
basic_format_args<basic_printf_context> args_;
+ static_assert(std::is_same<Char, char>::value ||
+ std::is_same<Char, wchar_t>::value,
+ "Unsupported code unit type.");
+
public:
using char_type = Char;
- using format_arg = basic_format_arg<basic_printf_context>;
- using parse_context_type = basic_printf_parse_context<Char>;
+ using parse_context_type = basic_format_parse_context<Char>;
template <typename T> using formatter_type = printf_formatter<T>;
- /**
- \rst
- Constructs a ``printf_context`` object. References to the arguments are
- stored in the context object so make sure they have appropriate lifetimes.
- \endrst
- */
- basic_printf_context(OutputIt out,
+ /// Constructs a `printf_context` object. References to the arguments are
+ /// stored in the context object so make sure they have appropriate lifetimes.
+ basic_printf_context(basic_appender<Char> out,
basic_format_args<basic_printf_context> args)
: out_(out), args_(args) {}
- OutputIt out() { return out_; }
- void advance_to(OutputIt it) { out_ = it; }
-
- detail::locale_ref locale() { return {}; }
+ auto out() -> basic_appender<Char> { return out_; }
+ void advance_to(basic_appender<Char>) {}
- format_arg arg(int id) const { return args_.get(id); }
+ auto locale() -> detail::locale_ref { return {}; }
- FMT_CONSTEXPR void on_error(const char* message) {
- detail::error_handler().on_error(message);
+ auto arg(int id) const -> basic_format_arg<basic_printf_context> {
+ return args_.get(id);
}
};
-FMT_BEGIN_DETAIL_NAMESPACE
+namespace detail {
// Checks if a value fits in int - used to avoid warnings about comparing
// signed and unsigned integers.
template <bool IsSigned> struct int_checker {
- template <typename T> static bool fits_in_int(T value) {
- unsigned max = max_value<int>();
+ template <typename T> static auto fits_in_int(T value) -> bool {
+ unsigned max = to_unsigned(max_value<int>());
return value <= max;
}
- static bool fits_in_int(bool) { return true; }
+ static auto fits_in_int(bool) -> bool { return true; }
};
template <> struct int_checker<true> {
- template <typename T> static bool fits_in_int(T value) {
+ template <typename T> static auto fits_in_int(T value) -> bool {
return value >= (std::numeric_limits<int>::min)() &&
value <= max_value<int>();
}
- static bool fits_in_int(int) { return true; }
+ static auto fits_in_int(int) -> bool { return true; }
};
-class printf_precision_handler {
- public:
+struct printf_precision_handler {
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
- int operator()(T value) {
+ auto operator()(T value) -> int {
if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
- FMT_THROW(format_error("number is too big"));
+ report_error("number is too big");
return (std::max)(static_cast<int>(value), 0);
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
- int operator()(T) {
- FMT_THROW(format_error("precision is not integer"));
+ auto operator()(T) -> int {
+ report_error("precision is not integer");
return 0;
}
};
// An argument visitor that returns true iff arg is a zero integer.
-class is_zero_int {
- public:
+struct is_zero_int {
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
- bool operator()(T value) {
+ auto operator()(T value) -> bool {
return value == 0;
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
- bool operator()(T) {
+ auto operator()(T) -> bool {
return false;
}
};
template <typename T> struct make_unsigned_or_bool : std::make_unsigned<T> {};
-template <> struct make_unsigned_or_bool<bool> { using type = bool; };
+template <> struct make_unsigned_or_bool<bool> {
+ using type = bool;
+};
template <typename T, typename Context> class arg_converter {
private:
if (const_check(sizeof(target_type) <= sizeof(int))) {
// Extra casts are used to silence warnings.
if (is_signed) {
- arg_ = detail::make_arg<Context>(
- static_cast<int>(static_cast<target_type>(value)));
+ auto n = static_cast<int>(static_cast<target_type>(value));
+ arg_ = detail::make_arg<Context>(n);
} else {
using unsigned_type = typename make_unsigned_or_bool<target_type>::type;
- arg_ = detail::make_arg<Context>(
- static_cast<unsigned>(static_cast<unsigned_type>(value)));
+ auto n = static_cast<unsigned>(static_cast<unsigned_type>(value));
+ arg_ = detail::make_arg<Context>(n);
}
} else {
if (is_signed) {
// glibc's printf doesn't sign extend arguments of smaller types:
// std::printf("%lld", -42); // prints "4294967254"
// but we don't have to do the same because it's a UB.
- arg_ = detail::make_arg<Context>(static_cast<long long>(value));
+ auto n = static_cast<long long>(value);
+ arg_ = detail::make_arg<Context>(n);
} else {
- arg_ = detail::make_arg<Context>(
- static_cast<typename make_unsigned_or_bool<U>::type>(value));
+ auto n = static_cast<typename make_unsigned_or_bool<U>::type>(value);
+ arg_ = detail::make_arg<Context>(n);
}
}
}
// unsigned).
template <typename T, typename Context, typename Char>
void convert_arg(basic_format_arg<Context>& arg, Char type) {
- visit_format_arg(arg_converter<T, Context>(arg, type), arg);
+ arg.visit(arg_converter<T, Context>(arg, type));
}
// Converts an integer argument to char for printf.
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
void operator()(T value) {
- arg_ = detail::make_arg<Context>(
- static_cast<typename Context::char_type>(value));
+ auto c = static_cast<typename Context::char_type>(value);
+ arg_ = detail::make_arg<Context>(c);
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
// An argument visitor that return a pointer to a C string if argument is a
// string or null otherwise.
template <typename Char> struct get_cstring {
- template <typename T> const Char* operator()(T) { return nullptr; }
- const Char* operator()(const Char* s) { return s; }
+ template <typename T> auto operator()(T) -> const Char* { return nullptr; }
+ auto operator()(const Char* s) -> const Char* { return s; }
};
// Checks if an argument is a valid printf width specifier and sets
// left alignment if it is negative.
-template <typename Char> class printf_width_handler {
+class printf_width_handler {
private:
- using format_specs = basic_format_specs<Char>;
-
format_specs& specs_;
public:
explicit printf_width_handler(format_specs& specs) : specs_(specs) {}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
- unsigned operator()(T value) {
+ auto operator()(T value) -> unsigned {
auto width = static_cast<uint32_or_64_or_128_t<T>>(value);
if (detail::is_negative(value)) {
specs_.align = align::left;
width = 0 - width;
}
- unsigned int_max = max_value<int>();
- if (width > int_max) FMT_THROW(format_error("number is too big"));
+ unsigned int_max = to_unsigned(max_value<int>());
+ if (width > int_max) report_error("number is too big");
return static_cast<unsigned>(width);
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
- unsigned operator()(T) {
- FMT_THROW(format_error("width is not integer"));
+ auto operator()(T) -> unsigned {
+ report_error("width is not integer");
return 0;
}
};
-// The ``printf`` argument formatter.
-template <typename OutputIt, typename Char>
+// Workaround for a bug with the XL compiler when initializing
+// printf_arg_formatter's base class.
+template <typename Char>
+auto make_arg_formatter(basic_appender<Char> iter, format_specs& s)
+ -> arg_formatter<Char> {
+ return {iter, s, locale_ref()};
+}
+
+// The `printf` argument formatter.
+template <typename Char>
class printf_arg_formatter : public arg_formatter<Char> {
private:
using base = arg_formatter<Char>;
- using context_type = basic_printf_context<OutputIt, Char>;
- using format_specs = basic_format_specs<Char>;
+ using context_type = basic_printf_context<Char>;
context_type& context_;
- OutputIt write_null_pointer(bool is_string = false) {
+ void write_null_pointer(bool is_string = false) {
auto s = this->specs;
s.type = presentation_type::none;
- return write_bytes(this->out, is_string ? "(null)" : "(nil)", s);
+ write_bytes<Char>(this->out, is_string ? "(null)" : "(nil)", s);
}
public:
- printf_arg_formatter(OutputIt iter, format_specs& s, context_type& ctx)
- : base{iter, s, locale_ref()}, context_(ctx) {}
+ printf_arg_formatter(basic_appender<Char> iter, format_specs& s,
+ context_type& ctx)
+ : base(make_arg_formatter(iter, s)), context_(ctx) {}
- OutputIt operator()(monostate value) { return base::operator()(value); }
+ void operator()(monostate value) { base::operator()(value); }
template <typename T, FMT_ENABLE_IF(detail::is_integral<T>::value)>
- OutputIt operator()(T value) {
+ void operator()(T value) {
// MSVC2013 fails to compile separate overloads for bool and Char so use
// std::is_same instead.
- if (std::is_same<T, Char>::value) {
- format_specs fmt_specs = this->specs;
- if (fmt_specs.type != presentation_type::none &&
- fmt_specs.type != presentation_type::chr) {
- return (*this)(static_cast<int>(value));
- }
- fmt_specs.sign = sign::none;
- fmt_specs.alt = false;
- fmt_specs.fill[0] = ' '; // Ignore '0' flag for char types.
- // align::numeric needs to be overwritten here since the '0' flag is
- // ignored for non-numeric types
- if (fmt_specs.align == align::none || fmt_specs.align == align::numeric)
- fmt_specs.align = align::right;
- return write<Char>(this->out, static_cast<Char>(value), fmt_specs);
+ if (!std::is_same<T, Char>::value) {
+ base::operator()(value);
+ return;
}
- return base::operator()(value);
+ format_specs s = this->specs;
+ if (s.type != presentation_type::none && s.type != presentation_type::chr) {
+ return (*this)(static_cast<int>(value));
+ }
+ s.sign = sign::none;
+ s.alt = false;
+ s.fill = ' '; // Ignore '0' flag for char types.
+ // align::numeric needs to be overwritten here since the '0' flag is
+ // ignored for non-numeric types
+ if (s.align == align::none || s.align == align::numeric)
+ s.align = align::right;
+ write<Char>(this->out, static_cast<Char>(value), s);
}
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
- OutputIt operator()(T value) {
- return base::operator()(value);
+ void operator()(T value) {
+ base::operator()(value);
}
- /** Formats a null-terminated C string. */
- OutputIt operator()(const char* value) {
- if (value) return base::operator()(value);
- return write_null_pointer(this->specs.type != presentation_type::pointer);
+ void operator()(const char* value) {
+ if (value)
+ base::operator()(value);
+ else
+ write_null_pointer(this->specs.type != presentation_type::pointer);
}
- /** Formats a null-terminated wide C string. */
- OutputIt operator()(const wchar_t* value) {
- if (value) return base::operator()(value);
- return write_null_pointer(this->specs.type != presentation_type::pointer);
+ void operator()(const wchar_t* value) {
+ if (value)
+ base::operator()(value);
+ else
+ write_null_pointer(this->specs.type != presentation_type::pointer);
}
- OutputIt operator()(basic_string_view<Char> value) {
- return base::operator()(value);
- }
+ void operator()(basic_string_view<Char> value) { base::operator()(value); }
- /** Formats a pointer. */
- OutputIt operator()(const void* value) {
- return value ? base::operator()(value) : write_null_pointer();
+ void operator()(const void* value) {
+ if (value)
+ base::operator()(value);
+ else
+ write_null_pointer();
}
- /** Formats an argument of a custom (user-defined) type. */
- OutputIt operator()(typename basic_format_arg<context_type>::handle handle) {
- auto parse_ctx =
- basic_printf_parse_context<Char>(basic_string_view<Char>());
+ void operator()(typename basic_format_arg<context_type>::handle handle) {
+ auto parse_ctx = basic_format_parse_context<Char>({});
handle.format(parse_ctx, context_);
- return this->out;
}
};
template <typename Char>
-void parse_flags(basic_format_specs<Char>& specs, const Char*& it,
- const Char* end) {
+void parse_flags(format_specs& specs, const Char*& it, const Char* end) {
for (; it != end; ++it) {
switch (*it) {
case '-':
specs.sign = sign::plus;
break;
case '0':
- specs.fill[0] = '0';
+ specs.fill = '0';
break;
case ' ':
- if (specs.sign != sign::plus) {
- specs.sign = sign::space;
- }
+ if (specs.sign != sign::plus) specs.sign = sign::space;
break;
case '#':
specs.alt = true;
}
template <typename Char, typename GetArg>
-int parse_header(const Char*& it, const Char* end,
- basic_format_specs<Char>& specs, GetArg get_arg) {
+auto parse_header(const Char*& it, const Char* end, format_specs& specs,
+ GetArg get_arg) -> int {
int arg_index = -1;
Char c = *it;
if (c >= '0' && c <= '9') {
++it;
arg_index = value != -1 ? value : max_value<int>();
} else {
- if (c == '0') specs.fill[0] = '0';
+ if (c == '0') specs.fill = '0';
if (value != 0) {
// Nonzero value means that we parsed width and don't need to
// parse it or flags again, so return now.
- if (value == -1) FMT_THROW(format_error("number is too big"));
+ if (value == -1) report_error("number is too big");
specs.width = value;
return arg_index;
}
if (it != end) {
if (*it >= '0' && *it <= '9') {
specs.width = parse_nonnegative_int(it, end, -1);
- if (specs.width == -1) FMT_THROW(format_error("number is too big"));
+ if (specs.width == -1) report_error("number is too big");
} else if (*it == '*') {
++it;
- specs.width = static_cast<int>(visit_format_arg(
- detail::printf_width_handler<Char>(specs), get_arg(-1)));
+ specs.width = static_cast<int>(
+ get_arg(-1).visit(detail::printf_width_handler(specs)));
}
}
return arg_index;
}
+inline auto parse_printf_presentation_type(char c, type t, bool& upper)
+ -> presentation_type {
+ using pt = presentation_type;
+ constexpr auto integral_set = sint_set | uint_set | bool_set | char_set;
+ switch (c) {
+ case 'd':
+ return in(t, integral_set) ? pt::dec : pt::none;
+ case 'o':
+ return in(t, integral_set) ? pt::oct : pt::none;
+ case 'X':
+ upper = true;
+ FMT_FALLTHROUGH;
+ case 'x':
+ return in(t, integral_set) ? pt::hex : pt::none;
+ case 'E':
+ upper = true;
+ FMT_FALLTHROUGH;
+ case 'e':
+ return in(t, float_set) ? pt::exp : pt::none;
+ case 'F':
+ upper = true;
+ FMT_FALLTHROUGH;
+ case 'f':
+ return in(t, float_set) ? pt::fixed : pt::none;
+ case 'G':
+ upper = true;
+ FMT_FALLTHROUGH;
+ case 'g':
+ return in(t, float_set) ? pt::general : pt::none;
+ case 'A':
+ upper = true;
+ FMT_FALLTHROUGH;
+ case 'a':
+ return in(t, float_set) ? pt::hexfloat : pt::none;
+ case 'c':
+ return in(t, integral_set) ? pt::chr : pt::none;
+ case 's':
+ return in(t, string_set | cstring_set) ? pt::string : pt::none;
+ case 'p':
+ return in(t, pointer_set | cstring_set) ? pt::pointer : pt::none;
+ default:
+ return pt::none;
+ }
+}
+
template <typename Char, typename Context>
void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
basic_format_args<Context> args) {
- using OutputIt = buffer_appender<Char>;
- auto out = OutputIt(buf);
- auto context = basic_printf_context<OutputIt, Char>(out, args);
- auto parse_ctx = basic_printf_parse_context<Char>(format);
+ using iterator = basic_appender<Char>;
+ auto out = iterator(buf);
+ auto context = basic_printf_context<Char>(out, args);
+ auto parse_ctx = basic_format_parse_context<Char>(format);
// Returns the argument with specified index or, if arg_index is -1, the next
// argument.
const Char* end = parse_ctx.end();
auto it = start;
while (it != end) {
- if (!detail::find<false, Char>(it, end, '%', it)) {
- it = end; // detail::find leaves it == nullptr if it doesn't find '%'
+ if (!find<false, Char>(it, end, '%', it)) {
+ it = end; // find leaves it == nullptr if it doesn't find '%'.
break;
}
Char c = *it++;
if (it != end && *it == c) {
- out = detail::write(
- out, basic_string_view<Char>(start, detail::to_unsigned(it - start)));
+ write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
start = ++it;
continue;
}
- out = detail::write(out, basic_string_view<Char>(
- start, detail::to_unsigned(it - 1 - start)));
+ write(out, basic_string_view<Char>(start, to_unsigned(it - 1 - start)));
- basic_format_specs<Char> specs;
+ auto specs = format_specs();
specs.align = align::right;
// Parse argument index, flags and width.
int arg_index = parse_header(it, end, specs, get_arg);
- if (arg_index == 0) parse_ctx.on_error("argument not found");
+ if (arg_index == 0) report_error("argument not found");
// Parse precision.
if (it != end && *it == '.') {
specs.precision = parse_nonnegative_int(it, end, 0);
} else if (c == '*') {
++it;
- specs.precision = static_cast<int>(
- visit_format_arg(detail::printf_precision_handler(), get_arg(-1)));
+ specs.precision =
+ static_cast<int>(get_arg(-1).visit(printf_precision_handler()));
} else {
specs.precision = 0;
}
auto arg = get_arg(arg_index);
// For d, i, o, u, x, and X conversion specifiers, if a precision is
// specified, the '0' flag is ignored
- if (specs.precision >= 0 && arg.is_integral())
- specs.fill[0] =
- ' '; // Ignore '0' flag for non-numeric types or if '-' present.
- if (specs.precision >= 0 && arg.type() == detail::type::cstring_type) {
- auto str = visit_format_arg(detail::get_cstring<Char>(), arg);
+ if (specs.precision >= 0 && arg.is_integral()) {
+ // Ignore '0' for non-numeric types or if '-' present.
+ specs.fill = ' ';
+ }
+ if (specs.precision >= 0 && arg.type() == type::cstring_type) {
+ auto str = arg.visit(get_cstring<Char>());
auto str_end = str + specs.precision;
auto nul = std::find(str, str_end, Char());
- arg = detail::make_arg<basic_printf_context<OutputIt, Char>>(
- basic_string_view<Char>(
- str, detail::to_unsigned(nul != str_end ? nul - str
- : specs.precision)));
+ auto sv = basic_string_view<Char>(
+ str, to_unsigned(nul != str_end ? nul - str : specs.precision));
+ arg = make_arg<basic_printf_context<Char>>(sv);
}
- if (specs.alt && visit_format_arg(detail::is_zero_int(), arg))
- specs.alt = false;
- if (specs.fill[0] == '0') {
+ if (specs.alt && arg.visit(is_zero_int())) specs.alt = false;
+ if (specs.fill.template get<Char>() == '0') {
if (arg.is_arithmetic() && specs.align != align::left)
specs.align = align::numeric;
else
- specs.fill[0] = ' '; // Ignore '0' flag for non-numeric types or if '-'
- // flag is also present.
+ specs.fill = ' '; // Ignore '0' flag for non-numeric types or if '-'
+ // flag is also present.
}
// Parse length and convert the argument to the required type.
c = it != end ? *it++ : 0;
Char t = it != end ? *it : 0;
- using detail::convert_arg;
switch (c) {
case 'h':
if (t == 'h') {
}
// Parse type.
- if (it == end) FMT_THROW(format_error("invalid format string"));
+ if (it == end) report_error("invalid format string");
char type = static_cast<char>(*it++);
if (arg.is_integral()) {
// Normalize type.
type = 'd';
break;
case 'c':
- visit_format_arg(
- detail::char_converter<basic_printf_context<OutputIt, Char>>(arg),
- arg);
+ arg.visit(char_converter<basic_printf_context<Char>>(arg));
break;
}
}
- specs.type = parse_presentation_type(type);
+ bool upper = false;
+ specs.type = parse_printf_presentation_type(type, arg.type(), upper);
if (specs.type == presentation_type::none)
- parse_ctx.on_error("invalid type specifier");
+ report_error("invalid format specifier");
+ specs.upper = upper;
start = it;
// Format argument.
- out = visit_format_arg(
- detail::printf_arg_formatter<OutputIt, Char>(out, specs, context), arg);
+ arg.visit(printf_arg_formatter<Char>(out, specs, context));
}
- detail::write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
+ write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
}
-FMT_END_DETAIL_NAMESPACE
+} // namespace detail
-template <typename Char>
-using basic_printf_context_t =
- basic_printf_context<detail::buffer_appender<Char>, Char>;
-
-using printf_context = basic_printf_context_t<char>;
-using wprintf_context = basic_printf_context_t<wchar_t>;
+using printf_context = basic_printf_context<char>;
+using wprintf_context = basic_printf_context<wchar_t>;
using printf_args = basic_format_args<printf_context>;
using wprintf_args = basic_format_args<wprintf_context>;
-/**
- \rst
- Constructs an `~fmt::format_arg_store` object that contains references to
- arguments and can be implicitly converted to `~fmt::printf_args`.
- \endrst
- */
-template <typename... T>
-inline auto make_printf_args(const T&... args)
- -> format_arg_store<printf_context, T...> {
- return {args...};
+/// Constructs an `format_arg_store` object that contains references to
+/// arguments and can be implicitly converted to `printf_args`.
+template <typename Char = char, typename... T>
+inline auto make_printf_args(T&... args)
+ -> decltype(fmt::make_format_args<basic_printf_context<Char>>(args...)) {
+ return fmt::make_format_args<basic_printf_context<Char>>(args...);
}
-/**
- \rst
- Constructs an `~fmt::format_arg_store` object that contains references to
- arguments and can be implicitly converted to `~fmt::wprintf_args`.
- \endrst
- */
-template <typename... T>
-inline auto make_wprintf_args(const T&... args)
- -> format_arg_store<wprintf_context, T...> {
- return {args...};
-}
+template <typename Char> struct vprintf_args {
+ using type = basic_format_args<basic_printf_context<Char>>;
+};
-template <typename S, typename Char = char_t<S>>
-inline auto vsprintf(
- const S& fmt,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+template <typename Char>
+inline auto vsprintf(basic_string_view<Char> fmt,
+ typename vprintf_args<Char>::type args)
-> std::basic_string<Char> {
- basic_memory_buffer<Char> buffer;
- vprintf(buffer, detail::to_string_view(fmt), args);
- return to_string(buffer);
+ auto buf = basic_memory_buffer<Char>();
+ detail::vprintf(buf, fmt, args);
+ return to_string(buf);
}
/**
- \rst
- Formats arguments and returns the result as a string.
-
- **Example**::
-
- std::string message = fmt::sprintf("The answer is %d", 42);
- \endrst
-*/
-template <typename S, typename... T,
- typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
+ * Formats `args` according to specifications in `fmt` and returns the result
+ * as as string.
+ *
+ * **Example**:
+ *
+ * std::string message = fmt::sprintf("The answer is %d", 42);
+ */
+template <typename S, typename... T, typename Char = char_t<S>>
inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string<Char> {
- using context = basic_printf_context_t<Char>;
return vsprintf(detail::to_string_view(fmt),
- fmt::make_format_args<context>(args...));
+ fmt::make_format_args<basic_printf_context<Char>>(args...));
}
-template <typename S, typename Char = char_t<S>>
-inline auto vfprintf(
- std::FILE* f, const S& fmt,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
- -> int {
- basic_memory_buffer<Char> buffer;
- vprintf(buffer, detail::to_string_view(fmt), args);
- size_t size = buffer.size();
- return std::fwrite(buffer.data(), sizeof(Char), size, f) < size
+template <typename Char>
+inline auto vfprintf(std::FILE* f, basic_string_view<Char> fmt,
+ typename vprintf_args<Char>::type args) -> int {
+ auto buf = basic_memory_buffer<Char>();
+ detail::vprintf(buf, fmt, args);
+ size_t size = buf.size();
+ return std::fwrite(buf.data(), sizeof(Char), size, f) < size
? -1
: static_cast<int>(size);
}
/**
- \rst
- Prints formatted data to the file *f*.
-
- **Example**::
-
- fmt::fprintf(stderr, "Don't %s!", "panic");
- \endrst
+ * Formats `args` according to specifications in `fmt` and writes the output
+ * to `f`.
+ *
+ * **Example**:
+ *
+ * fmt::fprintf(stderr, "Don't %s!", "panic");
*/
template <typename S, typename... T, typename Char = char_t<S>>
inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int {
- using context = basic_printf_context_t<Char>;
return vfprintf(f, detail::to_string_view(fmt),
- fmt::make_format_args<context>(args...));
+ make_printf_args<Char>(args...));
}
-template <typename S, typename Char = char_t<S>>
-inline auto vprintf(
- const S& fmt,
- basic_format_args<basic_printf_context_t<type_identity_t<Char>>> args)
+template <typename Char>
+FMT_DEPRECATED inline auto vprintf(basic_string_view<Char> fmt,
+ typename vprintf_args<Char>::type args)
-> int {
- return vfprintf(stdout, detail::to_string_view(fmt), args);
+ return vfprintf(stdout, fmt, args);
}
/**
- \rst
- Prints formatted data to ``stdout``.
-
- **Example**::
-
- fmt::printf("Elapsed time: %.2f seconds", 1.23);
- \endrst
+ * Formats `args` according to specifications in `fmt` and writes the output
+ * to `stdout`.
+ *
+ * **Example**:
+ *
+ * fmt::printf("Elapsed time: %.2f seconds", 1.23);
*/
-template <typename S, typename... T, FMT_ENABLE_IF(detail::is_string<S>::value)>
-inline auto printf(const S& fmt, const T&... args) -> int {
- return vprintf(
- detail::to_string_view(fmt),
- fmt::make_format_args<basic_printf_context_t<char_t<S>>>(args...));
+template <typename... T>
+inline auto printf(string_view fmt, const T&... args) -> int {
+ return vfprintf(stdout, fmt, make_printf_args(args...));
+}
+template <typename... T>
+FMT_DEPRECATED inline auto printf(basic_string_view<wchar_t> fmt,
+ const T&... args) -> int {
+ return vfprintf(stdout, fmt, make_printf_args<wchar_t>(args...));
}
-FMT_MODULE_EXPORT_END
+FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_PRINTF_H_
-// Formatting library for C++ - experimental range support
+// Formatting library for C++ - range and tuple support
//
-// Copyright (c) 2012 - present, Victor Zverovich
+// Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors
// All rights reserved.
//
// For the license information refer to format.h.
-//
-// Copyright (c) 2018 - present, Remotion (Igor Schulz)
-// All Rights Reserved
-// {fmt} support for ranges, containers and types tuple interface.
#ifndef FMT_RANGES_H_
#define FMT_RANGES_H_
-#include <initializer_list>
-#include <tuple>
-#include <type_traits>
+#ifndef FMT_MODULE
+# include <initializer_list>
+# include <iterator>
+# include <string>
+# include <tuple>
+# include <type_traits>
+# include <utility>
+#endif
#include "format.h"
FMT_BEGIN_NAMESPACE
-namespace detail {
-
-template <typename RangeT, typename OutputIterator>
-OutputIterator copy(const RangeT& range, OutputIterator out) {
- for (auto it = range.begin(), end = range.end(); it != end; ++it)
- *out++ = *it;
- return out;
-}
-
-template <typename OutputIterator>
-OutputIterator copy(const char* str, OutputIterator out) {
- while (*str) *out++ = *str++;
- return out;
-}
-
-template <typename OutputIterator>
-OutputIterator copy(char ch, OutputIterator out) {
- *out++ = ch;
- return out;
-}
-
-template <typename OutputIterator>
-OutputIterator copy(wchar_t ch, OutputIterator out) {
- *out++ = ch;
- return out;
-}
-
-// Returns true if T has a std::string-like interface, like std::string_view.
-template <typename T> class is_std_string_like {
- template <typename U>
- static auto check(U* p)
- -> decltype((void)p->find('a'), p->length(), (void)p->data(), int());
- template <typename> static void check(...);
-
- public:
- static constexpr const bool value =
- is_string<T>::value ||
- std::is_convertible<T, std_string_view<char>>::value ||
- !std::is_void<decltype(check<T>(nullptr))>::value;
-};
+FMT_EXPORT
+enum class range_format { disabled, map, set, sequence, string, debug_string };
-template <typename Char>
-struct is_std_string_like<fmt::basic_string_view<Char>> : std::true_type {};
+namespace detail {
template <typename T> class is_map {
template <typename U> static auto check(U*) -> typename U::mapped_type;
template <typename> static void check(...);
public:
-#ifdef FMT_FORMAT_MAP_AS_LIST
- static constexpr const bool value = false;
-#else
static constexpr const bool value =
!std::is_void<decltype(check<T>(nullptr))>::value;
-#endif
};
template <typename T> class is_set {
template <typename> static void check(...);
public:
-#ifdef FMT_FORMAT_SET_AS_LIST
- static constexpr const bool value = false;
-#else
static constexpr const bool value =
!std::is_void<decltype(check<T>(nullptr))>::value && !is_map<T>::value;
-#endif
};
template <typename... Ts> struct conditional_helper {};
struct has_member_fn_begin_end_t : std::false_type {};
template <typename T>
-struct has_member_fn_begin_end_t<T, void_t<decltype(std::declval<T>().begin()),
+struct has_member_fn_begin_end_t<T, void_t<decltype(*std::declval<T>().begin()),
decltype(std::declval<T>().end())>>
: std::true_type {};
-// Member function overload
+// Member function overloads.
template <typename T>
auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).begin());
template <typename T>
auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).end());
-// ADL overload. Only participates in overload resolution if member functions
+// ADL overloads. Only participate in overload resolution if member functions
// are not found.
template <typename T>
auto range_begin(T&& rng)
template <typename T>
struct has_const_begin_end<
- T,
- void_t<
- decltype(detail::range_begin(std::declval<const remove_cvref_t<T>&>())),
- decltype(detail::range_end(std::declval<const remove_cvref_t<T>&>()))>>
+ T, void_t<decltype(*detail::range_begin(
+ std::declval<const remove_cvref_t<T>&>())),
+ decltype(detail::range_end(
+ std::declval<const remove_cvref_t<T>&>()))>>
: std::true_type {};
template <typename T>
struct has_mutable_begin_end<
- T, void_t<decltype(detail::range_begin(std::declval<T>())),
- decltype(detail::range_end(std::declval<T>())),
- enable_if_t<std::is_copy_constructible<T>::value>>>
- : std::true_type {};
+ T, void_t<decltype(*detail::range_begin(std::declval<T&>())),
+ decltype(detail::range_end(std::declval<T&>())),
+ // the extra int here is because older versions of MSVC don't
+ // SFINAE properly unless there are distinct types
+ int>> : std::true_type {};
template <typename T>
struct is_range_<T, void>
template <typename T, T... N> struct integer_sequence {
using value_type = T;
- static FMT_CONSTEXPR size_t size() { return sizeof...(N); }
+ static FMT_CONSTEXPR auto size() -> size_t { return sizeof...(N); }
};
template <size_t... N> using index_sequence = integer_sequence<size_t, N...>;
static constexpr const bool value = false;
};
template <typename T, typename C> class is_tuple_formattable_<T, C, true> {
- template <std::size_t... I>
- static std::true_type check2(index_sequence<I...>,
- integer_sequence<bool, (I == I)...>);
- static std::false_type check2(...);
- template <std::size_t... I>
- static decltype(check2(
- index_sequence<I...>{},
- integer_sequence<
- bool, (is_formattable<typename std::tuple_element<I, T>::type,
- C>::value)...>{})) check(index_sequence<I...>);
+ template <size_t... Is>
+ static auto all_true(index_sequence<Is...>,
+ integer_sequence<bool, (Is >= 0)...>) -> std::true_type;
+ static auto all_true(...) -> std::false_type;
+
+ template <size_t... Is>
+ static auto check(index_sequence<Is...>) -> decltype(all_true(
+ index_sequence<Is...>{},
+ integer_sequence<bool,
+ (is_formattable<typename std::tuple_element<Is, T>::type,
+ C>::value)...>{}));
public:
static constexpr const bool value =
decltype(check(tuple_index_sequence<T>{}))::value;
};
-template <class Tuple, class F, size_t... Is>
-void for_each(index_sequence<Is...>, Tuple&& tup, F&& f) noexcept {
+template <typename Tuple, typename F, size_t... Is>
+FMT_CONSTEXPR void for_each(index_sequence<Is...>, Tuple&& t, F&& f) {
using std::get;
- // using free function get<I>(T) now.
- const int _[] = {0, ((void)f(get<Is>(tup)), 0)...};
- (void)_; // blocks warnings
+ // Using a free function get<Is>(Tuple) now.
+ const int unused[] = {0, ((void)f(get<Is>(t)), 0)...};
+ ignore_unused(unused);
}
-template <class T>
-FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> get_indexes(
- T const&) {
- return {};
+template <typename Tuple, typename F>
+FMT_CONSTEXPR void for_each(Tuple&& t, F&& f) {
+ for_each(tuple_index_sequence<remove_cvref_t<Tuple>>(),
+ std::forward<Tuple>(t), std::forward<F>(f));
}
-template <class Tuple, class F> void for_each(Tuple&& tup, F&& f) {
- const auto indexes = get_indexes(tup);
- for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f));
+template <typename Tuple1, typename Tuple2, typename F, size_t... Is>
+void for_each2(index_sequence<Is...>, Tuple1&& t1, Tuple2&& t2, F&& f) {
+ using std::get;
+ const int unused[] = {0, ((void)f(get<Is>(t1), get<Is>(t2)), 0)...};
+ ignore_unused(unused);
}
+template <typename Tuple1, typename Tuple2, typename F>
+void for_each2(Tuple1&& t1, Tuple2&& t2, F&& f) {
+ for_each2(tuple_index_sequence<remove_cvref_t<Tuple1>>(),
+ std::forward<Tuple1>(t1), std::forward<Tuple2>(t2),
+ std::forward<F>(f));
+}
+
+namespace tuple {
+// Workaround a bug in MSVC 2019 (v140).
+template <typename Char, typename... T>
+using result_t = std::tuple<formatter<remove_cvref_t<T>, Char>...>;
+
+using std::get;
+template <typename Tuple, typename Char, std::size_t... Is>
+auto get_formatters(index_sequence<Is...>)
+ -> result_t<Char, decltype(get<Is>(std::declval<Tuple>()))...>;
+} // namespace tuple
+
#if FMT_MSC_VERSION && FMT_MSC_VERSION < 1920
// Older MSVC doesn't get the reference type correctly for arrays.
template <typename R> struct range_reference_type_impl {
template <typename Range>
using uncvref_type = remove_cvref_t<range_reference_type<Range>>;
-template <typename Range>
-using uncvref_first_type =
- remove_cvref_t<decltype(std::declval<range_reference_type<Range>>().first)>;
-
-template <typename Range>
-using uncvref_second_type = remove_cvref_t<
- decltype(std::declval<range_reference_type<Range>>().second)>;
-
-template <typename OutputIt> OutputIt write_delimiter(OutputIt out) {
- *out++ = ',';
- *out++ = ' ';
- return out;
+template <typename Formatter>
+FMT_CONSTEXPR auto maybe_set_debug_format(Formatter& f, bool set)
+ -> decltype(f.set_debug_format(set)) {
+ f.set_debug_format(set);
}
+template <typename Formatter>
+FMT_CONSTEXPR void maybe_set_debug_format(Formatter&, ...) {}
-template <typename Char, typename OutputIt>
-auto write_range_entry(OutputIt out, basic_string_view<Char> str) -> OutputIt {
- return write_escaped_string(out, str);
-}
+template <typename T>
+struct range_format_kind_
+ : std::integral_constant<range_format,
+ std::is_same<uncvref_type<T>, T>::value
+ ? range_format::disabled
+ : is_map<T>::value ? range_format::map
+ : is_set<T>::value ? range_format::set
+ : range_format::sequence> {};
-template <typename Char, typename OutputIt, typename T,
- FMT_ENABLE_IF(std::is_convertible<T, std_string_view<char>>::value)>
-inline auto write_range_entry(OutputIt out, const T& str) -> OutputIt {
- auto sv = std_string_view<Char>(str);
- return write_range_entry<Char>(out, basic_string_view<Char>(sv));
-}
+template <range_format K>
+using range_format_constant = std::integral_constant<range_format, K>;
-template <typename Char, typename OutputIt, typename Arg,
- FMT_ENABLE_IF(std::is_same<Arg, Char>::value)>
-OutputIt write_range_entry(OutputIt out, const Arg v) {
- return write_escaped_char(out, v);
-}
+// These are not generic lambdas for compatibility with C++11.
+template <typename ParseContext> struct parse_empty_specs {
+ template <typename Formatter> FMT_CONSTEXPR void operator()(Formatter& f) {
+ f.parse(ctx);
+ detail::maybe_set_debug_format(f, true);
+ }
+ ParseContext& ctx;
+};
+template <typename FormatContext> struct format_tuple_element {
+ using char_type = typename FormatContext::char_type;
+
+ template <typename T>
+ void operator()(const formatter<T, char_type>& f, const T& v) {
+ if (i > 0) ctx.advance_to(detail::copy<char_type>(separator, ctx.out()));
+ ctx.advance_to(f.format(v, ctx));
+ ++i;
+ }
-template <
- typename Char, typename OutputIt, typename Arg,
- FMT_ENABLE_IF(!is_std_string_like<typename std::decay<Arg>::type>::value &&
- !std::is_same<Arg, Char>::value)>
-OutputIt write_range_entry(OutputIt out, const Arg& v) {
- return write<Char>(out, v);
-}
+ int i;
+ FormatContext& ctx;
+ basic_string_view<char_type> separator;
+};
} // namespace detail
detail::is_tuple_formattable_<T, C>::value;
};
-template <typename TupleT, typename Char>
-struct formatter<TupleT, Char,
- enable_if_t<fmt::is_tuple_like<TupleT>::value &&
- fmt::is_tuple_formattable<TupleT, Char>::value>> {
+template <typename Tuple, typename Char>
+struct formatter<Tuple, Char,
+ enable_if_t<fmt::is_tuple_like<Tuple>::value &&
+ fmt::is_tuple_formattable<Tuple, Char>::value>> {
private:
+ decltype(detail::tuple::get_formatters<Tuple, Char>(
+ detail::tuple_index_sequence<Tuple>())) formatters_;
+
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
basic_string_view<Char> opening_bracket_ =
detail::string_literal<Char, '('>{};
basic_string_view<Char> closing_bracket_ =
detail::string_literal<Char, ')'>{};
- // C++11 generic lambda for format().
- template <typename FormatContext> struct format_each {
- template <typename T> void operator()(const T& v) {
- if (i > 0) out = detail::copy_str<Char>(separator, out);
- out = detail::write_range_entry<Char>(out, v);
- ++i;
- }
- int i;
- typename FormatContext::iterator& out;
- basic_string_view<Char> separator;
- };
-
public:
FMT_CONSTEXPR formatter() {}
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
- return ctx.begin();
+ auto it = ctx.begin();
+ if (it != ctx.end() && *it != '}') report_error("invalid format specifier");
+ detail::for_each(formatters_, detail::parse_empty_specs<ParseContext>{ctx});
+ return it;
}
- template <typename FormatContext = format_context>
- auto format(const TupleT& values, FormatContext& ctx) const
+ template <typename FormatContext>
+ auto format(const Tuple& value, FormatContext& ctx) const
-> decltype(ctx.out()) {
- auto out = ctx.out();
- out = detail::copy_str<Char>(opening_bracket_, out);
- detail::for_each(values, format_each<FormatContext>{0, out, separator_});
- out = detail::copy_str<Char>(closing_bracket_, out);
- return out;
+ ctx.advance_to(detail::copy<Char>(opening_bracket_, ctx.out()));
+ detail::for_each2(
+ formatters_, value,
+ detail::format_tuple_element<FormatContext>{0, ctx, separator_});
+ return detail::copy<Char>(closing_bracket_, ctx.out());
}
};
template <typename T, typename Char> struct is_range {
static constexpr const bool value =
- detail::is_range_<T>::value && !detail::is_std_string_like<T>::value &&
- !std::is_convertible<T, std::basic_string<Char>>::value &&
- !std::is_convertible<T, detail::std_string_view<Char>>::value;
+ detail::is_range_<T>::value && !detail::has_to_string_view<T>::value;
};
namespace detail {
};
template <typename Char, typename Element>
-using range_formatter_type = conditional_t<
- is_formattable<Element, Char>::value,
- formatter<remove_cvref_t<decltype(range_mapper<buffer_context<Char>>{}.map(
- std::declval<Element>()))>,
- Char>,
- fallback_formatter<Element, Char>>;
+using range_formatter_type =
+ formatter<remove_cvref_t<decltype(range_mapper<buffered_context<Char>>{}
+ .map(std::declval<Element>()))>,
+ Char>;
template <typename R>
using maybe_const_range =
#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
template <typename R, typename Char>
struct is_formattable_delayed
- : disjunction<
- is_formattable<uncvref_type<maybe_const_range<R>>, Char>,
- has_fallback_formatter<uncvref_type<maybe_const_range<R>>, Char>> {};
+ : is_formattable<uncvref_type<maybe_const_range<R>>, Char> {};
#endif
-
} // namespace detail
+template <typename...> struct conjunction : std::true_type {};
+template <typename P> struct conjunction<P> : P {};
+template <typename P1, typename... Pn>
+struct conjunction<P1, Pn...>
+ : conditional_t<bool(P1::value), conjunction<Pn...>, P1> {};
+
template <typename T, typename Char, typename Enable = void>
struct range_formatter;
template <typename T, typename Char>
struct range_formatter<
T, Char,
- enable_if_t<conjunction<
- std::is_same<T, remove_cvref_t<T>>,
- disjunction<is_formattable<T, Char>,
- detail::has_fallback_formatter<T, Char>>>::value>> {
+ enable_if_t<conjunction<std::is_same<T, remove_cvref_t<T>>,
+ is_formattable<T, Char>>::value>> {
private:
detail::range_formatter_type<Char, T> underlying_;
- bool custom_specs_ = false;
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
basic_string_view<Char> opening_bracket_ =
detail::string_literal<Char, '['>{};
basic_string_view<Char> closing_bracket_ =
detail::string_literal<Char, ']'>{};
-
- template <class U>
- FMT_CONSTEXPR static auto maybe_set_debug_format(U& u, int)
- -> decltype(u.set_debug_format()) {
- u.set_debug_format();
+ bool is_debug = false;
+
+ template <typename Output, typename It, typename Sentinel, typename U = T,
+ FMT_ENABLE_IF(std::is_same<U, Char>::value)>
+ auto write_debug_string(Output& out, It it, Sentinel end) const -> Output {
+ auto buf = basic_memory_buffer<Char>();
+ for (; it != end; ++it) buf.push_back(*it);
+ auto specs = format_specs();
+ specs.type = presentation_type::debug;
+ return detail::write<Char>(
+ out, basic_string_view<Char>(buf.data(), buf.size()), specs);
}
- template <class U>
- FMT_CONSTEXPR static void maybe_set_debug_format(U&, ...) {}
-
- FMT_CONSTEXPR void maybe_set_debug_format() {
- maybe_set_debug_format(underlying_, 0);
+ template <typename Output, typename It, typename Sentinel, typename U = T,
+ FMT_ENABLE_IF(!std::is_same<U, Char>::value)>
+ auto write_debug_string(Output& out, It, Sentinel) const -> Output {
+ return out;
}
public:
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
auto it = ctx.begin();
auto end = ctx.end();
- if (it == end || *it == '}') {
- maybe_set_debug_format();
- return it;
- }
+ detail::maybe_set_debug_format(underlying_, true);
+ if (it == end) return underlying_.parse(ctx);
- if (*it == 'n') {
+ switch (detail::to_ascii(*it)) {
+ case 'n':
set_brackets({}, {});
++it;
- }
-
- if (*it == '}') {
- maybe_set_debug_format();
+ break;
+ case '?':
+ is_debug = true;
+ set_brackets({}, {});
+ ++it;
+ if (it == end || *it != 's') report_error("invalid format specifier");
+ FMT_FALLTHROUGH;
+ case 's':
+ if (!std::is_same<T, Char>::value)
+ report_error("invalid format specifier");
+ if (!is_debug) {
+ set_brackets(detail::string_literal<Char, '"'>{},
+ detail::string_literal<Char, '"'>{});
+ set_separator({});
+ detail::maybe_set_debug_format(underlying_, false);
+ }
+ ++it;
return it;
}
- if (*it != ':')
- FMT_THROW(format_error("no other top-level range formatters supported"));
+ if (it != end && *it != '}') {
+ if (*it != ':') report_error("invalid format specifier");
+ detail::maybe_set_debug_format(underlying_, false);
+ ++it;
+ }
- custom_specs_ = true;
- ++it;
ctx.advance_to(it);
return underlying_.parse(ctx);
}
- template <typename R, class FormatContext>
+ template <typename R, typename FormatContext>
auto format(R&& range, FormatContext& ctx) const -> decltype(ctx.out()) {
- detail::range_mapper<buffer_context<Char>> mapper;
+ auto mapper = detail::range_mapper<buffered_context<Char>>();
auto out = ctx.out();
- out = detail::copy_str<Char>(opening_bracket_, out);
- int i = 0;
auto it = detail::range_begin(range);
auto end = detail::range_end(range);
+ if (is_debug) return write_debug_string(out, std::move(it), end);
+
+ out = detail::copy<Char>(opening_bracket_, out);
+ int i = 0;
for (; it != end; ++it) {
- if (i > 0) out = detail::copy_str<Char>(separator_, out);
- ;
+ if (i > 0) out = detail::copy<Char>(separator_, out);
ctx.advance_to(out);
- out = underlying_.format(mapper.map(*it), ctx);
+ auto&& item = *it; // Need an lvalue
+ out = underlying_.format(mapper.map(item), ctx);
++i;
}
- out = detail::copy_str<Char>(closing_bracket_, out);
+ out = detail::copy<Char>(closing_bracket_, out);
return out;
}
};
-enum class range_format { disabled, map, set, sequence, string, debug_string };
+FMT_EXPORT
+template <typename T, typename Char, typename Enable = void>
+struct range_format_kind
+ : conditional_t<
+ is_range<T, Char>::value, detail::range_format_kind_<T>,
+ std::integral_constant<range_format, range_format::disabled>> {};
-namespace detail {
-template <typename T> struct range_format_kind_ {
- static constexpr auto value = std::is_same<range_reference_type<T>, T>::value
- ? range_format::disabled
- : is_map<T>::value ? range_format::map
- : is_set<T>::value ? range_format::set
- : range_format::sequence;
-};
+template <typename R, typename Char>
+struct formatter<
+ R, Char,
+ enable_if_t<conjunction<
+ bool_constant<
+ range_format_kind<R, Char>::value != range_format::disabled &&
+ range_format_kind<R, Char>::value != range_format::map &&
+ range_format_kind<R, Char>::value != range_format::string &&
+ range_format_kind<R, Char>::value != range_format::debug_string>
+// Workaround a bug in MSVC 2015 and earlier.
+#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
+ ,
+ detail::is_formattable_delayed<R, Char>
+#endif
+ >::value>> {
+ private:
+ using range_type = detail::maybe_const_range<R>;
+ range_formatter<detail::uncvref_type<range_type>, Char> range_formatter_;
-template <range_format K, typename R, typename Char, typename Enable = void>
-struct range_default_formatter;
+ public:
+ using nonlocking = void;
+
+ FMT_CONSTEXPR formatter() {
+ if (detail::const_check(range_format_kind<R, Char>::value !=
+ range_format::set))
+ return;
+ range_formatter_.set_brackets(detail::string_literal<Char, '{'>{},
+ detail::string_literal<Char, '}'>{});
+ }
-template <range_format K>
-using range_format_constant = std::integral_constant<range_format, K>;
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ return range_formatter_.parse(ctx);
+ }
-template <range_format K, typename R, typename Char>
-struct range_default_formatter<
- K, R, Char,
- enable_if_t<(K == range_format::sequence || K == range_format::map ||
- K == range_format::set)>> {
- using range_type = detail::maybe_const_range<R>;
- range_formatter<detail::uncvref_type<range_type>, Char> underlying_;
+ template <typename FormatContext>
+ auto format(range_type& range, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ return range_formatter_.format(range, ctx);
+ }
+};
- FMT_CONSTEXPR range_default_formatter() { init(range_format_constant<K>()); }
+// A map formatter.
+template <typename R, typename Char>
+struct formatter<
+ R, Char,
+ enable_if_t<range_format_kind<R, Char>::value == range_format::map>> {
+ private:
+ using map_type = detail::maybe_const_range<R>;
+ using element_type = detail::uncvref_type<map_type>;
+
+ decltype(detail::tuple::get_formatters<element_type, Char>(
+ detail::tuple_index_sequence<element_type>())) formatters_;
+ bool no_delimiters_ = false;
+
+ public:
+ FMT_CONSTEXPR formatter() {}
- FMT_CONSTEXPR void init(range_format_constant<range_format::set>) {
- underlying_.set_brackets(detail::string_literal<Char, '{'>{},
- detail::string_literal<Char, '}'>{});
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ auto it = ctx.begin();
+ auto end = ctx.end();
+ if (it != end) {
+ if (detail::to_ascii(*it) == 'n') {
+ no_delimiters_ = true;
+ ++it;
+ }
+ if (it != end && *it != '}') {
+ if (*it != ':') report_error("invalid format specifier");
+ ++it;
+ }
+ ctx.advance_to(it);
+ }
+ detail::for_each(formatters_, detail::parse_empty_specs<ParseContext>{ctx});
+ return it;
}
- FMT_CONSTEXPR void init(range_format_constant<range_format::map>) {
- underlying_.set_brackets(detail::string_literal<Char, '{'>{},
- detail::string_literal<Char, '}'>{});
- underlying_.underlying().set_brackets({}, {});
- underlying_.underlying().set_separator(
- detail::string_literal<Char, ':', ' '>{});
+ template <typename FormatContext>
+ auto format(map_type& map, FormatContext& ctx) const -> decltype(ctx.out()) {
+ auto out = ctx.out();
+ basic_string_view<Char> open = detail::string_literal<Char, '{'>{};
+ if (!no_delimiters_) out = detail::copy<Char>(open, out);
+ int i = 0;
+ auto mapper = detail::range_mapper<buffered_context<Char>>();
+ basic_string_view<Char> sep = detail::string_literal<Char, ',', ' '>{};
+ for (auto&& value : map) {
+ if (i > 0) out = detail::copy<Char>(sep, out);
+ ctx.advance_to(out);
+ detail::for_each2(formatters_, mapper.map(value),
+ detail::format_tuple_element<FormatContext>{
+ 0, ctx, detail::string_literal<Char, ':', ' '>{}});
+ ++i;
+ }
+ basic_string_view<Char> close = detail::string_literal<Char, '}'>{};
+ if (!no_delimiters_) out = detail::copy<Char>(close, out);
+ return out;
}
+};
+
+// A (debug_)string formatter.
+template <typename R, typename Char>
+struct formatter<
+ R, Char,
+ enable_if_t<range_format_kind<R, Char>::value == range_format::string ||
+ range_format_kind<R, Char>::value ==
+ range_format::debug_string>> {
+ private:
+ using range_type = detail::maybe_const_range<R>;
+ using string_type =
+ conditional_t<std::is_constructible<
+ detail::std_string_view<Char>,
+ decltype(detail::range_begin(std::declval<R>())),
+ decltype(detail::range_end(std::declval<R>()))>::value,
+ detail::std_string_view<Char>, std::basic_string<Char>>;
- FMT_CONSTEXPR void init(range_format_constant<range_format::sequence>) {}
+ formatter<string_type, Char> underlying_;
+ public:
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return underlying_.parse(ctx);
template <typename FormatContext>
auto format(range_type& range, FormatContext& ctx) const
-> decltype(ctx.out()) {
- return underlying_.format(range, ctx);
+ auto out = ctx.out();
+ if (detail::const_check(range_format_kind<R, Char>::value ==
+ range_format::debug_string))
+ *out++ = '"';
+ out = underlying_.format(
+ string_type{detail::range_begin(range), detail::range_end(range)}, ctx);
+ if (detail::const_check(range_format_kind<R, Char>::value ==
+ range_format::debug_string))
+ *out++ = '"';
+ return out;
}
};
-} // namespace detail
-template <typename T, typename Char, typename Enable = void>
-struct range_format_kind
- : conditional_t<
- is_range<T, Char>::value, detail::range_format_kind_<T>,
- std::integral_constant<range_format, range_format::disabled>> {};
+template <typename It, typename Sentinel, typename Char = char>
+struct join_view : detail::view {
+ It begin;
+ Sentinel end;
+ basic_string_view<Char> sep;
-template <typename R, typename Char>
-struct formatter<
- R, Char,
- enable_if_t<conjunction<bool_constant<range_format_kind<R, Char>::value !=
- range_format::disabled>
-// Workaround a bug in MSVC 2015 and earlier.
-#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
- ,
- detail::is_formattable_delayed<R, Char>
+ join_view(It b, Sentinel e, basic_string_view<Char> s)
+ : begin(std::move(b)), end(e), sep(s) {}
+};
+
+template <typename It, typename Sentinel, typename Char>
+struct formatter<join_view<It, Sentinel, Char>, Char> {
+ private:
+ using value_type =
+#ifdef __cpp_lib_ranges
+ std::iter_value_t<It>;
+#else
+ typename std::iterator_traits<It>::value_type;
#endif
- >::value>>
- : detail::range_default_formatter<range_format_kind<R, Char>::value, R,
- Char> {
+ formatter<remove_cvref_t<value_type>, Char> value_formatter_;
+
+ using view_ref = conditional_t<std::is_copy_constructible<It>::value,
+ const join_view<It, Sentinel, Char>&,
+ join_view<It, Sentinel, Char>&&>;
+
+ public:
+ using nonlocking = void;
+
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> const Char* {
+ return value_formatter_.parse(ctx);
+ }
+
+ template <typename FormatContext>
+ auto format(view_ref& value, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ auto it = std::forward<view_ref>(value).begin;
+ auto out = ctx.out();
+ if (it == value.end) return out;
+ out = value_formatter_.format(*it, ctx);
+ ++it;
+ while (it != value.end) {
+ out = detail::copy<Char>(value.sep.begin(), value.sep.end(), out);
+ ctx.advance_to(out);
+ out = value_formatter_.format(*it, ctx);
+ ++it;
+ }
+ return out;
+ }
};
+/// Returns a view that formats the iterator range `[begin, end)` with elements
+/// separated by `sep`.
+template <typename It, typename Sentinel>
+auto join(It begin, Sentinel end, string_view sep) -> join_view<It, Sentinel> {
+ return {std::move(begin), end, sep};
+}
+
+/**
+ * Returns a view that formats `range` with elements separated by `sep`.
+ *
+ * **Example**:
+ *
+ * auto v = std::vector<int>{1, 2, 3};
+ * fmt::print("{}", fmt::join(v, ", "));
+ * // Output: 1, 2, 3
+ *
+ * `fmt::join` applies passed format specifiers to the range elements:
+ *
+ * fmt::print("{:02}", fmt::join(v, ", "));
+ * // Output: 01, 02, 03
+ */
+template <typename Range>
+auto join(Range&& r, string_view sep)
+ -> join_view<decltype(detail::range_begin(r)),
+ decltype(detail::range_end(r))> {
+ return {detail::range_begin(r), detail::range_end(r), sep};
+}
+
template <typename Char, typename... T> struct tuple_join_view : detail::view {
const std::tuple<T...>& tuple;
basic_string_view<Char> sep;
: tuple(t), sep{s} {}
};
-template <typename Char, typename... T>
-using tuple_arg_join = tuple_join_view<Char, T...>;
-
// Define FMT_TUPLE_JOIN_SPECIFIERS to enable experimental format specifiers
// support in tuple_join. It is disabled by default because of issues with
// the dynamic width and precision.
if (N > 1) {
auto end1 = do_parse(ctx, std::integral_constant<size_t, N - 1>());
if (end != end1)
- FMT_THROW(format_error("incompatible format specs for tuple elements"));
+ report_error("incompatible format specs for tuple elements");
}
#endif
return end;
typename FormatContext::iterator {
auto out = std::get<sizeof...(T) - N>(formatters_)
.format(std::get<sizeof...(T) - N>(value.tuple), ctx);
- if (N > 1) {
- out = std::copy(value.sep.begin(), value.sep.end(), out);
- ctx.advance_to(out);
- return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
- }
- return out;
+ if (N <= 1) return out;
+ out = detail::copy<Char>(value.sep, out);
+ ctx.advance_to(out);
+ return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
}
};
-FMT_MODULE_EXPORT_BEGIN
+namespace detail {
+// Check if T has an interface like a container adaptor (e.g. std::stack,
+// std::queue, std::priority_queue).
+template <typename T> class is_container_adaptor_like {
+ template <typename U> static auto check(U* p) -> typename U::container_type;
+ template <typename> static void check(...);
-/**
- \rst
- Returns an object that formats `tuple` with elements separated by `sep`.
+ public:
+ static constexpr const bool value =
+ !std::is_void<decltype(check<T>(nullptr))>::value;
+};
- **Example**::
+template <typename Container> struct all {
+ const Container& c;
+ auto begin() const -> typename Container::const_iterator { return c.begin(); }
+ auto end() const -> typename Container::const_iterator { return c.end(); }
+};
+} // namespace detail
- std::tuple<int, char> t = {1, 'a'};
- fmt::print("{}", fmt::join(t, ", "));
- // Output: "1, a"
- \endrst
+template <typename T, typename Char>
+struct formatter<
+ T, Char,
+ enable_if_t<conjunction<detail::is_container_adaptor_like<T>,
+ bool_constant<range_format_kind<T, Char>::value ==
+ range_format::disabled>>::value>>
+ : formatter<detail::all<typename T::container_type>, Char> {
+ using all = detail::all<typename T::container_type>;
+ template <typename FormatContext>
+ auto format(const T& t, FormatContext& ctx) const -> decltype(ctx.out()) {
+ struct getter : T {
+ static auto get(const T& t) -> all {
+ return {t.*(&getter::c)}; // Access c through the derived class.
+ }
+ };
+ return formatter<all>::format(getter::get(t), ctx);
+ }
+};
+
+FMT_BEGIN_EXPORT
+
+/**
+ * Returns an object that formats `std::tuple` with elements separated by `sep`.
+ *
+ * **Example**:
+ *
+ * auto t = std::tuple<int, char>{1, 'a'};
+ * fmt::print("{}", fmt::join(t, ", "));
+ * // Output: 1, a
*/
template <typename... T>
FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple, string_view sep)
return {tuple, sep};
}
-template <typename... T>
-FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple,
- basic_string_view<wchar_t> sep)
- -> tuple_join_view<wchar_t, T...> {
- return {tuple, sep};
-}
-
/**
- \rst
- Returns an object that formats `initializer_list` with elements separated by
- `sep`.
-
- **Example**::
-
- fmt::print("{}", fmt::join({1, 2, 3}, ", "));
- // Output: "1, 2, 3"
- \endrst
+ * Returns an object that formats `std::initializer_list` with elements
+ * separated by `sep`.
+ *
+ * **Example**:
+ *
+ * fmt::print("{}", fmt::join({1, 2, 3}, ", "));
+ * // Output: "1, 2, 3"
*/
template <typename T>
auto join(std::initializer_list<T> list, string_view sep)
return join(std::begin(list), std::end(list), sep);
}
-FMT_MODULE_EXPORT_END
+FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_RANGES_H_
#ifndef FMT_STD_H_
#define FMT_STD_H_
-#include <thread>
-#include <type_traits>
-#include <utility>
-
+#include "format.h"
#include "ostream.h"
+#ifndef FMT_MODULE
+# include <atomic>
+# include <bitset>
+# include <complex>
+# include <cstdlib>
+# include <exception>
+# include <memory>
+# include <thread>
+# include <type_traits>
+# include <typeinfo>
+# include <utility>
+# include <vector>
+
+// Check FMT_CPLUSPLUS to suppress a bogus warning in MSVC.
+# if FMT_CPLUSPLUS >= 201703L
+# if FMT_HAS_INCLUDE(<filesystem>)
+# include <filesystem>
+# endif
+# if FMT_HAS_INCLUDE(<variant>)
+# include <variant>
+# endif
+# if FMT_HAS_INCLUDE(<optional>)
+# include <optional>
+# endif
+# endif
+// Use > instead of >= in the version check because <source_location> may be
+// available after C++17 but before C++20 is marked as implemented.
+# if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE(<source_location>)
+# include <source_location>
+# endif
+# if FMT_CPLUSPLUS > 202002L && FMT_HAS_INCLUDE(<expected>)
+# include <expected>
+# endif
+#endif // FMT_MODULE
+
#if FMT_HAS_INCLUDE(<version>)
# include <version>
#endif
-// Checking FMT_CPLUSPLUS for warning suppression in MSVC.
-#if FMT_CPLUSPLUS >= 201703L
-# if FMT_HAS_INCLUDE(<filesystem>)
-# include <filesystem>
+
+// GCC 4 does not support FMT_HAS_INCLUDE.
+#if FMT_HAS_INCLUDE(<cxxabi.h>) || defined(__GLIBCXX__)
+# include <cxxabi.h>
+// Android NDK with gabi++ library on some architectures does not implement
+// abi::__cxa_demangle().
+# ifndef __GABIXX_CXXABI_H__
+# define FMT_HAS_ABI_CXA_DEMANGLE
+# endif
+#endif
+
+// For older Xcode versions, __cpp_lib_xxx flags are inaccurately defined.
+#ifndef FMT_CPP_LIB_FILESYSTEM
+# ifdef __cpp_lib_filesystem
+# define FMT_CPP_LIB_FILESYSTEM __cpp_lib_filesystem
+# else
+# define FMT_CPP_LIB_FILESYSTEM 0
# endif
-# if FMT_HAS_INCLUDE(<variant>)
-# include <variant>
+#endif
+
+#ifndef FMT_CPP_LIB_VARIANT
+# ifdef __cpp_lib_variant
+# define FMT_CPP_LIB_VARIANT __cpp_lib_variant
+# else
+# define FMT_CPP_LIB_VARIANT 0
# endif
#endif
-#ifdef __cpp_lib_filesystem
+#if FMT_CPP_LIB_FILESYSTEM
FMT_BEGIN_NAMESPACE
namespace detail {
-template <typename Char>
-void write_escaped_path(basic_memory_buffer<Char>& quoted,
- const std::filesystem::path& p) {
- write_escaped_string<Char>(std::back_inserter(quoted), p.string<Char>());
-}
-# ifdef _WIN32
-template <>
-inline void write_escaped_path<char>(basic_memory_buffer<char>& quoted,
- const std::filesystem::path& p) {
- auto s = p.u8string();
- write_escaped_string<char>(
- std::back_inserter(quoted),
- string_view(reinterpret_cast<const char*>(s.c_str()), s.size()));
+template <typename Char, typename PathChar>
+auto get_path_string(const std::filesystem::path& p,
+ const std::basic_string<PathChar>& native) {
+ if constexpr (std::is_same_v<Char, char> && std::is_same_v<PathChar, wchar_t>)
+ return to_utf8<wchar_t>(native, to_utf8_error_policy::replace);
+ else
+ return p.string<Char>();
}
-# endif
-template <>
-inline void write_escaped_path<std::filesystem::path::value_type>(
- basic_memory_buffer<std::filesystem::path::value_type>& quoted,
- const std::filesystem::path& p) {
- write_escaped_string<std::filesystem::path::value_type>(
- std::back_inserter(quoted), p.native());
+
+template <typename Char, typename PathChar>
+void write_escaped_path(basic_memory_buffer<Char>& quoted,
+ const std::filesystem::path& p,
+ const std::basic_string<PathChar>& native) {
+ if constexpr (std::is_same_v<Char, char> &&
+ std::is_same_v<PathChar, wchar_t>) {
+ auto buf = basic_memory_buffer<wchar_t>();
+ write_escaped_string<wchar_t>(std::back_inserter(buf), native);
+ bool valid = to_utf8<wchar_t>::convert(quoted, {buf.data(), buf.size()});
+ FMT_ASSERT(valid, "invalid utf16");
+ } else if constexpr (std::is_same_v<Char, PathChar>) {
+ write_escaped_string<std::filesystem::path::value_type>(
+ std::back_inserter(quoted), native);
+ } else {
+ write_escaped_string<Char>(std::back_inserter(quoted), p.string<Char>());
+ }
}
} // namespace detail
-template <typename Char>
-struct formatter<std::filesystem::path, Char>
- : formatter<basic_string_view<Char>> {
+FMT_EXPORT
+template <typename Char> struct formatter<std::filesystem::path, Char> {
+ private:
+ format_specs specs_;
+ detail::arg_ref<Char> width_ref_;
+ bool debug_ = false;
+ char path_type_ = 0;
+
+ public:
+ FMT_CONSTEXPR void set_debug_format(bool set = true) { debug_ = set; }
+
+ template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+ auto it = ctx.begin(), end = ctx.end();
+ if (it == end) return it;
+
+ it = detail::parse_align(it, end, specs_);
+ if (it == end) return it;
+
+ it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx);
+ if (it != end && *it == '?') {
+ debug_ = true;
+ ++it;
+ }
+ if (it != end && (*it == 'g')) path_type_ = detail::to_ascii(*it++);
+ return it;
+ }
+
template <typename FormatContext>
- auto format(const std::filesystem::path& p, FormatContext& ctx) const ->
- typename FormatContext::iterator {
- basic_memory_buffer<Char> quoted;
- detail::write_escaped_path(quoted, p);
- return formatter<basic_string_view<Char>>::format(
- basic_string_view<Char>(quoted.data(), quoted.size()), ctx);
+ auto format(const std::filesystem::path& p, FormatContext& ctx) const {
+ auto specs = specs_;
+ auto path_string =
+ !path_type_ ? p.native()
+ : p.generic_string<std::filesystem::path::value_type>();
+
+ detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref_,
+ ctx);
+ if (!debug_) {
+ auto s = detail::get_path_string<Char>(p, path_string);
+ return detail::write(ctx.out(), basic_string_view<Char>(s), specs);
+ }
+ auto quoted = basic_memory_buffer<Char>();
+ detail::write_escaped_path(quoted, p, path_string);
+ return detail::write(ctx.out(),
+ basic_string_view<Char>(quoted.data(), quoted.size()),
+ specs);
}
};
+
+class path : public std::filesystem::path {
+ public:
+ auto display_string() const -> std::string {
+ const std::filesystem::path& base = *this;
+ return fmt::format(FMT_STRING("{}"), base);
+ }
+ auto system_string() const -> std::string { return string(); }
+
+ auto generic_display_string() const -> std::string {
+ const std::filesystem::path& base = *this;
+ return fmt::format(FMT_STRING("{:g}"), base);
+ }
+ auto generic_system_string() const -> std::string { return generic_string(); }
+};
+
FMT_END_NAMESPACE
-#endif
+#endif // FMT_CPP_LIB_FILESYSTEM
FMT_BEGIN_NAMESPACE
+FMT_EXPORT
+template <std::size_t N, typename Char>
+struct formatter<std::bitset<N>, Char> : nested_formatter<string_view> {
+ private:
+ // Functor because C++11 doesn't support generic lambdas.
+ struct writer {
+ const std::bitset<N>& bs;
+
+ template <typename OutputIt>
+ FMT_CONSTEXPR auto operator()(OutputIt out) -> OutputIt {
+ for (auto pos = N; pos > 0; --pos) {
+ out = detail::write<Char>(out, bs[pos - 1] ? Char('1') : Char('0'));
+ }
+
+ return out;
+ }
+ };
+
+ public:
+ template <typename FormatContext>
+ auto format(const std::bitset<N>& bs, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ return write_padded(ctx, writer{bs});
+ }
+};
+
+FMT_EXPORT
template <typename Char>
struct formatter<std::thread::id, Char> : basic_ostream_formatter<Char> {};
FMT_END_NAMESPACE
-#ifdef __cpp_lib_variant
+#ifdef __cpp_lib_optional
FMT_BEGIN_NAMESPACE
-template <typename Char> struct formatter<std::monostate, Char> {
+FMT_EXPORT
+template <typename T, typename Char>
+struct formatter<std::optional<T>, Char,
+ std::enable_if_t<is_formattable<T, Char>::value>> {
+ private:
+ formatter<T, Char> underlying_;
+ static constexpr basic_string_view<Char> optional =
+ detail::string_literal<Char, 'o', 'p', 't', 'i', 'o', 'n', 'a', 'l',
+ '('>{};
+ static constexpr basic_string_view<Char> none =
+ detail::string_literal<Char, 'n', 'o', 'n', 'e'>{};
+
+ template <class U>
+ FMT_CONSTEXPR static auto maybe_set_debug_format(U& u, bool set)
+ -> decltype(u.set_debug_format(set)) {
+ u.set_debug_format(set);
+ }
+
+ template <class U>
+ FMT_CONSTEXPR static void maybe_set_debug_format(U&, ...) {}
+
+ public:
+ template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+ maybe_set_debug_format(underlying_, true);
+ return underlying_.parse(ctx);
+ }
+
+ template <typename FormatContext>
+ auto format(const std::optional<T>& opt, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ if (!opt) return detail::write<Char>(ctx.out(), none);
+
+ auto out = ctx.out();
+ out = detail::write<Char>(out, optional);
+ ctx.advance_to(out);
+ out = underlying_.format(*opt, ctx);
+ return detail::write(out, ')');
+ }
+};
+FMT_END_NAMESPACE
+#endif // __cpp_lib_optional
+
+#if defined(__cpp_lib_expected) || FMT_CPP_LIB_VARIANT
+
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template <typename Char, typename OutputIt, typename T>
+auto write_escaped_alternative(OutputIt out, const T& v) -> OutputIt {
+ if constexpr (has_to_string_view<T>::value)
+ return write_escaped_string<Char>(out, detail::to_string_view(v));
+ if constexpr (std::is_same_v<T, Char>) return write_escaped_char(out, v);
+ return write<Char>(out, v);
+}
+
+} // namespace detail
+
+FMT_END_NAMESPACE
+#endif
+
+#ifdef __cpp_lib_expected
+FMT_BEGIN_NAMESPACE
+
+FMT_EXPORT
+template <typename T, typename E, typename Char>
+struct formatter<std::expected<T, E>, Char,
+ std::enable_if_t<is_formattable<T, Char>::value &&
+ is_formattable<E, Char>::value>> {
template <typename ParseContext>
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
return ctx.begin();
}
template <typename FormatContext>
- auto format(const std::monostate&, FormatContext& ctx) const
+ auto format(const std::expected<T, E>& value, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ auto out = ctx.out();
+
+ if (value.has_value()) {
+ out = detail::write<Char>(out, "expected(");
+ out = detail::write_escaped_alternative<Char>(out, *value);
+ } else {
+ out = detail::write<Char>(out, "unexpected(");
+ out = detail::write_escaped_alternative<Char>(out, value.error());
+ }
+ *out++ = ')';
+ return out;
+ }
+};
+FMT_END_NAMESPACE
+#endif // __cpp_lib_expected
+
+#ifdef __cpp_lib_source_location
+FMT_BEGIN_NAMESPACE
+FMT_EXPORT
+template <> struct formatter<std::source_location> {
+ template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+ return ctx.begin();
+ }
+
+ template <typename FormatContext>
+ auto format(const std::source_location& loc, FormatContext& ctx) const
-> decltype(ctx.out()) {
auto out = ctx.out();
- out = detail::write<Char>(out, "monostate");
+ out = detail::write(out, loc.file_name());
+ out = detail::write(out, ':');
+ out = detail::write<char>(out, loc.line());
+ out = detail::write(out, ':');
+ out = detail::write<char>(out, loc.column());
+ out = detail::write(out, ": ");
+ out = detail::write(out, loc.function_name());
return out;
}
};
+FMT_END_NAMESPACE
+#endif
+#if FMT_CPP_LIB_VARIANT
+FMT_BEGIN_NAMESPACE
namespace detail {
template <typename T>
using variant_index_sequence =
std::make_index_sequence<std::variant_size<T>::value>;
-// variant_size and variant_alternative check.
-template <typename T, typename U = void>
-struct is_variant_like_ : std::false_type {};
-template <typename T>
-struct is_variant_like_<T, std::void_t<decltype(std::variant_size<T>::value)>>
- : std::true_type {};
+template <typename> struct is_variant_like_ : std::false_type {};
+template <typename... Types>
+struct is_variant_like_<std::variant<Types...>> : std::true_type {};
-// formattable element check
+// formattable element check.
template <typename T, typename C> class is_variant_formattable_ {
- template <std::size_t... I>
+ template <std::size_t... Is>
static std::conjunction<
- is_formattable<std::variant_alternative_t<I, T>, C>...>
- check(std::index_sequence<I...>);
+ is_formattable<std::variant_alternative_t<Is, T>, C>...>
+ check(std::index_sequence<Is...>);
public:
static constexpr const bool value =
decltype(check(variant_index_sequence<T>{}))::value;
};
-template <typename Char, typename OutputIt, typename T>
-auto write_variant_alternative(OutputIt out, const T& v) -> OutputIt {
- if constexpr (is_string<T>::value)
- return write_escaped_string<Char>(out, detail::to_string_view(v));
- else if constexpr (std::is_same_v<T, Char>)
- return write_escaped_char(out, v);
- else
- return write<Char>(out, v);
-}
-
} // namespace detail
template <typename T> struct is_variant_like {
detail::is_variant_formattable_<T, C>::value;
};
+FMT_EXPORT
+template <typename Char> struct formatter<std::monostate, Char> {
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ return ctx.begin();
+ }
+
+ template <typename FormatContext>
+ auto format(const std::monostate&, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ return detail::write<Char>(ctx.out(), "monostate");
+ }
+};
+
+FMT_EXPORT
template <typename Variant, typename Char>
struct formatter<
Variant, Char,
auto out = ctx.out();
out = detail::write<Char>(out, "variant(");
- std::visit(
- [&](const auto& v) {
- out = detail::write_variant_alternative<Char>(out, v);
- },
- value);
+ FMT_TRY {
+ std::visit(
+ [&](const auto& v) {
+ out = detail::write_escaped_alternative<Char>(out, v);
+ },
+ value);
+ }
+ FMT_CATCH(const std::bad_variant_access&) {
+ detail::write<Char>(out, "valueless by exception");
+ }
*out++ = ')';
return out;
}
};
FMT_END_NAMESPACE
+#endif // FMT_CPP_LIB_VARIANT
+
+FMT_BEGIN_NAMESPACE
+FMT_EXPORT
+template <typename Char> struct formatter<std::error_code, Char> {
+ template <typename ParseContext>
+ FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+ return ctx.begin();
+ }
+
+ template <typename FormatContext>
+ FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ auto out = ctx.out();
+ out = detail::write_bytes<Char>(out, ec.category().name(), format_specs());
+ out = detail::write<Char>(out, Char(':'));
+ out = detail::write<Char>(out, ec.value());
+ return out;
+ }
+};
+
+#if FMT_USE_RTTI
+namespace detail {
+
+template <typename Char, typename OutputIt>
+auto write_demangled_name(OutputIt out, const std::type_info& ti) -> OutputIt {
+# ifdef FMT_HAS_ABI_CXA_DEMANGLE
+ int status = 0;
+ std::size_t size = 0;
+ std::unique_ptr<char, void (*)(void*)> demangled_name_ptr(
+ abi::__cxa_demangle(ti.name(), nullptr, &size, &status), &std::free);
+
+ string_view demangled_name_view;
+ if (demangled_name_ptr) {
+ demangled_name_view = demangled_name_ptr.get();
+
+ // Normalization of stdlib inline namespace names.
+ // libc++ inline namespaces.
+ // std::__1::* -> std::*
+ // std::__1::__fs::* -> std::*
+ // libstdc++ inline namespaces.
+ // std::__cxx11::* -> std::*
+ // std::filesystem::__cxx11::* -> std::filesystem::*
+ if (demangled_name_view.starts_with("std::")) {
+ char* begin = demangled_name_ptr.get();
+ char* to = begin + 5; // std::
+ for (char *from = to, *end = begin + demangled_name_view.size();
+ from < end;) {
+ // This is safe, because demangled_name is NUL-terminated.
+ if (from[0] == '_' && from[1] == '_') {
+ char* next = from + 1;
+ while (next < end && *next != ':') next++;
+ if (next[0] == ':' && next[1] == ':') {
+ from = next + 2;
+ continue;
+ }
+ }
+ *to++ = *from++;
+ }
+ demangled_name_view = {begin, detail::to_unsigned(to - begin)};
+ }
+ } else {
+ demangled_name_view = string_view(ti.name());
+ }
+ return detail::write_bytes<Char>(out, demangled_name_view);
+# elif FMT_MSC_VERSION
+ const string_view demangled_name(ti.name());
+ for (std::size_t i = 0; i < demangled_name.size(); ++i) {
+ auto sub = demangled_name;
+ sub.remove_prefix(i);
+ if (sub.starts_with("enum ")) {
+ i += 4;
+ continue;
+ }
+ if (sub.starts_with("class ") || sub.starts_with("union ")) {
+ i += 5;
+ continue;
+ }
+ if (sub.starts_with("struct ")) {
+ i += 6;
+ continue;
+ }
+ if (*sub.begin() != ' ') *out++ = *sub.begin();
+ }
+ return out;
+# else
+ return detail::write_bytes<Char>(out, string_view(ti.name()));
+# endif
+}
+
+} // namespace detail
+
+FMT_EXPORT
+template <typename Char>
+struct formatter<std::type_info, Char // DEPRECATED! Mixing code unit types.
+ > {
+ public:
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ return ctx.begin();
+ }
+
+ template <typename Context>
+ auto format(const std::type_info& ti, Context& ctx) const
+ -> decltype(ctx.out()) {
+ return detail::write_demangled_name<Char>(ctx.out(), ti);
+ }
+};
#endif
+FMT_EXPORT
+template <typename T, typename Char>
+struct formatter<
+ T, Char, // DEPRECATED! Mixing code unit types.
+ typename std::enable_if<std::is_base_of<std::exception, T>::value>::type> {
+ private:
+ bool with_typename_ = false;
+
+ public:
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ auto it = ctx.begin();
+ auto end = ctx.end();
+ if (it == end || *it == '}') return it;
+ if (*it == 't') {
+ ++it;
+ with_typename_ = FMT_USE_RTTI != 0;
+ }
+ return it;
+ }
+
+ template <typename Context>
+ auto format(const std::exception& ex, Context& ctx) const
+ -> decltype(ctx.out()) {
+ auto out = ctx.out();
+#if FMT_USE_RTTI
+ if (with_typename_) {
+ out = detail::write_demangled_name<Char>(out, typeid(ex));
+ *out++ = ':';
+ *out++ = ' ';
+ }
+#endif
+ return detail::write_bytes<Char>(out, string_view(ex.what()));
+ }
+};
+
+namespace detail {
+
+template <typename T, typename Enable = void>
+struct has_flip : std::false_type {};
+
+template <typename T>
+struct has_flip<T, void_t<decltype(std::declval<T>().flip())>>
+ : std::true_type {};
+
+template <typename T> struct is_bit_reference_like {
+ static constexpr const bool value =
+ std::is_convertible<T, bool>::value &&
+ std::is_nothrow_assignable<T, bool>::value && has_flip<T>::value;
+};
+
+#ifdef _LIBCPP_VERSION
+
+// Workaround for libc++ incompatibility with C++ standard.
+// According to the Standard, `bitset::operator[] const` returns bool.
+template <typename C>
+struct is_bit_reference_like<std::__bit_const_reference<C>> {
+ static constexpr const bool value = true;
+};
+
+#endif
+
+} // namespace detail
+
+// We can't use std::vector<bool, Allocator>::reference and
+// std::bitset<N>::reference because the compiler can't deduce Allocator and N
+// in partial specialization.
+FMT_EXPORT
+template <typename BitRef, typename Char>
+struct formatter<BitRef, Char,
+ enable_if_t<detail::is_bit_reference_like<BitRef>::value>>
+ : formatter<bool, Char> {
+ template <typename FormatContext>
+ FMT_CONSTEXPR auto format(const BitRef& v, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ return formatter<bool, Char>::format(v, ctx);
+ }
+};
+
+template <typename T, typename Deleter>
+auto ptr(const std::unique_ptr<T, Deleter>& p) -> const void* {
+ return p.get();
+}
+template <typename T> auto ptr(const std::shared_ptr<T>& p) -> const void* {
+ return p.get();
+}
+
+FMT_EXPORT
+template <typename T, typename Char>
+struct formatter<std::atomic<T>, Char,
+ enable_if_t<is_formattable<T, Char>::value>>
+ : formatter<T, Char> {
+ template <typename FormatContext>
+ auto format(const std::atomic<T>& v, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ return formatter<T, Char>::format(v.load(), ctx);
+ }
+};
+
+#ifdef __cpp_lib_atomic_flag_test
+FMT_EXPORT
+template <typename Char>
+struct formatter<std::atomic_flag, Char> : formatter<bool, Char> {
+ template <typename FormatContext>
+ auto format(const std::atomic_flag& v, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ return formatter<bool, Char>::format(v.test(), ctx);
+ }
+};
+#endif // __cpp_lib_atomic_flag_test
+
+FMT_EXPORT
+template <typename T, typename Char> struct formatter<std::complex<T>, Char> {
+ private:
+ detail::dynamic_format_specs<Char> specs_;
+
+ template <typename FormatContext, typename OutputIt>
+ FMT_CONSTEXPR auto do_format(const std::complex<T>& c,
+ detail::dynamic_format_specs<Char>& specs,
+ FormatContext& ctx, OutputIt out) const
+ -> OutputIt {
+ if (c.real() != 0) {
+ *out++ = Char('(');
+ out = detail::write<Char>(out, c.real(), specs, ctx.locale());
+ specs.sign = sign::plus;
+ out = detail::write<Char>(out, c.imag(), specs, ctx.locale());
+ if (!detail::isfinite(c.imag())) *out++ = Char(' ');
+ *out++ = Char('i');
+ *out++ = Char(')');
+ return out;
+ }
+ out = detail::write<Char>(out, c.imag(), specs, ctx.locale());
+ if (!detail::isfinite(c.imag())) *out++ = Char(' ');
+ *out++ = Char('i');
+ return out;
+ }
+
+ public:
+ FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+ -> decltype(ctx.begin()) {
+ if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin();
+ return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx,
+ detail::type_constant<T, Char>::value);
+ }
+
+ template <typename FormatContext>
+ auto format(const std::complex<T>& c, FormatContext& ctx) const
+ -> decltype(ctx.out()) {
+ auto specs = specs_;
+ if (specs.width_ref.kind != detail::arg_id_kind::none ||
+ specs.precision_ref.kind != detail::arg_id_kind::none) {
+ detail::handle_dynamic_spec<detail::width_checker>(specs.width,
+ specs.width_ref, ctx);
+ detail::handle_dynamic_spec<detail::precision_checker>(
+ specs.precision, specs.precision_ref, ctx);
+ }
+
+ if (specs.width == 0) return do_format(c, specs, ctx, ctx.out());
+ auto buf = basic_memory_buffer<Char>();
+
+ auto outer_specs = format_specs();
+ outer_specs.width = specs.width;
+ outer_specs.fill = specs.fill;
+ outer_specs.align = specs.align;
+
+ specs.width = 0;
+ specs.fill = {};
+ specs.align = align::none;
+
+ do_format(c, specs, ctx, basic_appender<Char>(buf));
+ return detail::write<Char>(ctx.out(),
+ basic_string_view<Char>(buf.data(), buf.size()),
+ outer_specs);
+ }
+};
+
+FMT_END_NAMESPACE
#endif // FMT_STD_H_
#ifndef FMT_XCHAR_H_
#define FMT_XCHAR_H_
-#include <cwchar>
-
+#include "color.h"
#include "format.h"
+#include "ranges.h"
+
+#ifndef FMT_MODULE
+# include <cwchar>
+# if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
+# include <locale>
+# endif
+#endif
FMT_BEGIN_NAMESPACE
namespace detail {
+
template <typename T>
using is_exotic_char = bool_constant<!std::is_same<T, char>::value>;
+
+template <typename S, typename = void> struct format_string_char {};
+
+template <typename S>
+struct format_string_char<
+ S, void_t<decltype(sizeof(detail::to_string_view(std::declval<S>())))>> {
+ using type = char_t<S>;
+};
+
+template <typename S>
+struct format_string_char<S, enable_if_t<is_compile_string<S>::value>> {
+ using type = typename S::char_type;
+};
+
+template <typename S>
+using format_string_char_t = typename format_string_char<S>::type;
+
+inline auto write_loc(basic_appender<wchar_t> out, loc_value value,
+ const format_specs& specs, locale_ref loc) -> bool {
+#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+ auto& numpunct =
+ std::use_facet<std::numpunct<wchar_t>>(loc.get<std::locale>());
+ auto separator = std::wstring();
+ auto grouping = numpunct.grouping();
+ if (!grouping.empty()) separator = std::wstring(1, numpunct.thousands_sep());
+ return value.visit(loc_writer<wchar_t>{out, specs, separator, grouping, {}});
+#endif
+ return false;
}
+} // namespace detail
-FMT_MODULE_EXPORT_BEGIN
+FMT_BEGIN_EXPORT
using wstring_view = basic_string_view<wchar_t>;
using wformat_parse_context = basic_format_parse_context<wchar_t>;
-using wformat_context = buffer_context<wchar_t>;
+using wformat_context = buffered_context<wchar_t>;
using wformat_args = basic_format_args<wformat_context>;
using wmemory_buffer = basic_memory_buffer<wchar_t>;
#else
template <typename... Args>
using wformat_string = basic_format_string<wchar_t, type_identity_t<Args>...>;
-inline auto runtime(wstring_view s) -> basic_runtime<wchar_t> { return {{s}}; }
+inline auto runtime(wstring_view s) -> runtime_format_string<wchar_t> {
+ return {{s}};
+}
#endif
template <> struct is_char<wchar_t> : std::true_type {};
-template <> struct is_char<detail::char8_type> : std::true_type {};
template <> struct is_char<char16_t> : std::true_type {};
template <> struct is_char<char32_t> : std::true_type {};
-template <typename... Args>
-constexpr format_arg_store<wformat_context, Args...> make_wformat_args(
- const Args&... args) {
- return {args...};
+#ifdef __cpp_char8_t
+template <>
+struct is_char<char8_t> : bool_constant<detail::is_utf8_enabled()> {};
+#endif
+
+template <typename... T>
+constexpr auto make_wformat_args(T&... args)
+ -> decltype(fmt::make_format_args<wformat_context>(args...)) {
+ return fmt::make_format_args<wformat_context>(args...);
}
inline namespace literals {
#if FMT_USE_USER_DEFINED_LITERALS && !FMT_USE_NONTYPE_TEMPLATE_ARGS
-constexpr detail::udl_arg<wchar_t> operator"" _a(const wchar_t* s, size_t) {
+constexpr auto operator""_a(const wchar_t* s, size_t)
+ -> detail::udl_arg<wchar_t> {
return {s};
}
#endif
return join(std::begin(list), std::end(list), sep);
}
+template <typename... T>
+auto join(const std::tuple<T...>& tuple, basic_string_view<wchar_t> sep)
+ -> tuple_join_view<wchar_t, T...> {
+ return {tuple, sep};
+}
+
template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
auto vformat(basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args)
+ typename detail::vformat_args<Char>::type args)
-> std::basic_string<Char> {
- basic_memory_buffer<Char> buffer;
- detail::vformat_to(buffer, format_str, args);
- return to_string(buffer);
+ auto buf = basic_memory_buffer<Char>();
+ detail::vformat_to(buf, format_str, args);
+ return to_string(buf);
}
template <typename... T>
return vformat(fmt::wstring_view(fmt), fmt::make_wformat_args(args...));
}
+template <typename OutputIt, typename... T>
+auto format_to(OutputIt out, wformat_string<T...> fmt, T&&... args)
+ -> OutputIt {
+ return vformat_to(out, fmt::wstring_view(fmt),
+ fmt::make_wformat_args(args...));
+}
+
// Pass char_t as a default template parameter instead of using
// std::basic_string<char_t<S>> to reduce the symbol size.
-template <typename S, typename... Args, typename Char = char_t<S>,
+template <typename S, typename... T,
+ typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(!std::is_same<Char, char>::value &&
!std::is_same<Char, wchar_t>::value)>
-auto format(const S& format_str, Args&&... args) -> std::basic_string<Char> {
+auto format(const S& format_str, T&&... args) -> std::basic_string<Char> {
return vformat(detail::to_string_view(format_str),
- fmt::make_format_args<buffer_context<Char>>(args...));
+ fmt::make_format_args<buffered_context<Char>>(args...));
}
-template <typename Locale, typename S, typename Char = char_t<S>,
+template <typename Locale, typename S,
+ typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
detail::is_exotic_char<Char>::value)>
-inline auto vformat(
- const Locale& loc, const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args)
+inline auto vformat(const Locale& loc, const S& format_str,
+ typename detail::vformat_args<Char>::type args)
-> std::basic_string<Char> {
return detail::vformat(loc, detail::to_string_view(format_str), args);
}
-template <typename Locale, typename S, typename... Args,
- typename Char = char_t<S>,
+template <typename Locale, typename S, typename... T,
+ typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
detail::is_exotic_char<Char>::value)>
-inline auto format(const Locale& loc, const S& format_str, Args&&... args)
+inline auto format(const Locale& loc, const S& format_str, T&&... args)
-> std::basic_string<Char> {
- return detail::vformat(loc, detail::to_string_view(format_str),
- fmt::make_format_args<buffer_context<Char>>(args...));
+ return detail::vformat(
+ loc, detail::to_string_view(format_str),
+ fmt::make_format_args<buffered_context<Char>>(args...));
}
-template <typename OutputIt, typename S, typename Char = char_t<S>,
+template <typename OutputIt, typename S,
+ typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_exotic_char<Char>::value)>
auto vformat_to(OutputIt out, const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args)
- -> OutputIt {
+ typename detail::vformat_args<Char>::type args) -> OutputIt {
auto&& buf = detail::get_buffer<Char>(out);
detail::vformat_to(buf, detail::to_string_view(format_str), args);
- return detail::get_iterator(buf);
+ return detail::get_iterator(buf, out);
}
-template <typename OutputIt, typename S, typename... Args,
- typename Char = char_t<S>,
- FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
- detail::is_exotic_char<Char>::value)>
-inline auto format_to(OutputIt out, const S& fmt, Args&&... args) -> OutputIt {
+template <typename OutputIt, typename S, typename... T,
+ typename Char = detail::format_string_char_t<S>,
+ FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value &&
+ !std::is_same<Char, char>::value &&
+ !std::is_same<Char, wchar_t>::value)>
+inline auto format_to(OutputIt out, const S& fmt, T&&... args) -> OutputIt {
return vformat_to(out, detail::to_string_view(fmt),
- fmt::make_format_args<buffer_context<Char>>(args...));
+ fmt::make_format_args<buffered_context<Char>>(args...));
}
template <typename Locale, typename S, typename OutputIt, typename... Args,
- typename Char = char_t<S>,
+ typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_locale<Locale>::value&&
detail::is_exotic_char<Char>::value)>
-inline auto vformat_to(
- OutputIt out, const Locale& loc, const S& format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args) -> OutputIt {
+inline auto vformat_to(OutputIt out, const Locale& loc, const S& format_str,
+ typename detail::vformat_args<Char>::type args)
+ -> OutputIt {
auto&& buf = detail::get_buffer<Char>(out);
vformat_to(buf, detail::to_string_view(format_str), args,
detail::locale_ref(loc));
- return detail::get_iterator(buf);
+ return detail::get_iterator(buf, out);
}
-template <
- typename OutputIt, typename Locale, typename S, typename... Args,
- typename Char = char_t<S>,
- bool enable = detail::is_output_iterator<OutputIt, Char>::value&&
- detail::is_locale<Locale>::value&& detail::is_exotic_char<Char>::value>
+template <typename OutputIt, typename Locale, typename S, typename... T,
+ typename Char = detail::format_string_char_t<S>,
+ bool enable = detail::is_output_iterator<OutputIt, Char>::value &&
+ detail::is_locale<Locale>::value &&
+ detail::is_exotic_char<Char>::value>
inline auto format_to(OutputIt out, const Locale& loc, const S& format_str,
- Args&&... args) ->
+ T&&... args) ->
typename std::enable_if<enable, OutputIt>::type {
- return vformat_to(out, loc, to_string_view(format_str),
- fmt::make_format_args<buffer_context<Char>>(args...));
+ return vformat_to(out, loc, detail::to_string_view(format_str),
+ fmt::make_format_args<buffered_context<Char>>(args...));
}
template <typename OutputIt, typename Char, typename... Args,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_exotic_char<Char>::value)>
-inline auto vformat_to_n(
- OutputIt out, size_t n, basic_string_view<Char> format_str,
- basic_format_args<buffer_context<type_identity_t<Char>>> args)
+inline auto vformat_to_n(OutputIt out, size_t n,
+ basic_string_view<Char> format_str,
+ typename detail::vformat_args<Char>::type args)
-> format_to_n_result<OutputIt> {
- detail::iterator_buffer<OutputIt, Char, detail::fixed_buffer_traits> buf(out,
- n);
+ using traits = detail::fixed_buffer_traits;
+ auto buf = detail::iterator_buffer<OutputIt, Char, traits>(out, n);
detail::vformat_to(buf, format_str, args);
return {buf.out(), buf.count()};
}
-template <typename OutputIt, typename S, typename... Args,
- typename Char = char_t<S>,
+template <typename OutputIt, typename S, typename... T,
+ typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_exotic_char<Char>::value)>
-inline auto format_to_n(OutputIt out, size_t n, const S& fmt,
- const Args&... args) -> format_to_n_result<OutputIt> {
- return vformat_to_n(out, n, detail::to_string_view(fmt),
- fmt::make_format_args<buffer_context<Char>>(args...));
+inline auto format_to_n(OutputIt out, size_t n, const S& fmt, T&&... args)
+ -> format_to_n_result<OutputIt> {
+ return vformat_to_n(out, n, fmt::basic_string_view<Char>(fmt),
+ fmt::make_format_args<buffered_context<Char>>(args...));
}
-template <typename S, typename... Args, typename Char = char_t<S>,
+template <typename S, typename... T,
+ typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_exotic_char<Char>::value)>
-inline auto formatted_size(const S& fmt, Args&&... args) -> size_t {
- detail::counting_buffer<Char> buf;
+inline auto formatted_size(const S& fmt, T&&... args) -> size_t {
+ auto buf = detail::counting_buffer<Char>();
detail::vformat_to(buf, detail::to_string_view(fmt),
- fmt::make_format_args<buffer_context<Char>>(args...));
+ fmt::make_format_args<buffered_context<Char>>(args...));
return buf.count();
}
inline void vprint(std::FILE* f, wstring_view fmt, wformat_args args) {
- wmemory_buffer buffer;
- detail::vformat_to(buffer, fmt, args);
- buffer.push_back(L'\0');
- if (std::fputws(buffer.data(), f) == -1)
+ auto buf = wmemory_buffer();
+ detail::vformat_to(buf, fmt, args);
+ buf.push_back(L'\0');
+ if (std::fputws(buf.data(), f) == -1)
FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
}
return vprint(wstring_view(fmt), fmt::make_wformat_args(args...));
}
-/**
- Converts *value* to ``std::wstring`` using the default format for type *T*.
- */
+template <typename... T>
+void println(std::FILE* f, wformat_string<T...> fmt, T&&... args) {
+ return print(f, L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
+}
+
+template <typename... T> void println(wformat_string<T...> fmt, T&&... args) {
+ return print(L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
+}
+
+inline auto vformat(const text_style& ts, wstring_view fmt, wformat_args args)
+ -> std::wstring {
+ auto buf = wmemory_buffer();
+ detail::vformat_to(buf, ts, fmt, args);
+ return fmt::to_string(buf);
+}
+
+template <typename... T>
+inline auto format(const text_style& ts, wformat_string<T...> fmt, T&&... args)
+ -> std::wstring {
+ return fmt::vformat(ts, fmt, fmt::make_wformat_args(args...));
+}
+
+template <typename... T>
+FMT_DEPRECATED void print(std::FILE* f, const text_style& ts,
+ wformat_string<T...> fmt, const T&... args) {
+ vprint(f, ts, fmt, fmt::make_wformat_args(args...));
+}
+
+template <typename... T>
+FMT_DEPRECATED void print(const text_style& ts, wformat_string<T...> fmt,
+ const T&... args) {
+ return print(stdout, ts, fmt, args...);
+}
+
+/// Converts `value` to `std::wstring` using the default format for type `T`.
template <typename T> inline auto to_wstring(const T& value) -> std::wstring {
return format(FMT_STRING(L"{}"), value);
}
-FMT_MODULE_EXPORT_END
+FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_XCHAR_H_
notification_client_SOURCES = notification-client.cpp
notification_client_LDADD = $(LIBLTTNG_CTL) $(LIBCOMMON_LGPL) \
- $(top_builddir)/tests/utils/libtestutils.la
+ $(top_builddir)/tests/utils/libtestutils.la \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
register_some_triggers_SOURCES = register-some-triggers.cpp
register_some_triggers_LDADD = $(LIBLTTNG_CTL) \
# uuid unit test
test_uuid_SOURCES = test_uuid.cpp
-test_uuid_LDADD = $(LIBTAP) $(LIBCOMMON_GPL)
+test_uuid_LDADD = $(LIBTAP) $(LIBCOMMON_GPL) \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
# buffer view unit test
test_buffer_view_SOURCES = test_buffer_view.cpp
# Action api
test_action_SOURCES = test_action.cpp
-test_action_LDADD = $(LIBTAP) $(LIBCOMMON_GPL) $(LIBLTTNG_CTL) $(DL_LIBS)
+test_action_LDADD = $(LIBTAP) $(LIBCOMMON_GPL) $(LIBLTTNG_CTL) $(DL_LIBS) \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
lttngtest_la_LDFLAGS = \
$(AM_LDFLAGS) \
$(LD_NO_UNDEFINED) \
+ $(top_builddir)/src/vendor/fmt/libfmt.la \
-rpath / -avoid-version -module $(LD_NOTEXT)
lttngtest_la_LIBADD = \
struct formatter<bt_field_class_type> : formatter<std::string> {
template <typename FormatContextType>
typename FormatContextType::iterator format(const bt_field_class_type field_class_type,
- FormatContextType& ctx)
+ FormatContextType& ctx) const
{
const char *name;
if HAVE_LIBLTTNG_UST_CTL
noinst_PROGRAMS = gen-data-pending
gen_data_pending_SOURCES = main.cpp
-gen_data_pending_LDADD = $(LIB_LTTNG_CTL)
+gen_data_pending_LDADD = $(LIB_LTTNG_CTL) \
+ $(top_builddir)/src/vendor/fmt/libfmt.la
endif
projects / lttng-tools.git / commitdiff
