449cb9d7 |
1 | /* |
2 | |
3 | parser.c: Generate helper declarations and functions to trace events |
4 | from an event description file. |
5 | |
6 | Copyright (C) 2002, Xianxiu Yang |
7 | Copyright (C) 2002, Michel Dagenais |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by |
10 | the Free Software Foundation; version 2 of the License. |
11 | |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
20 | */ |
21 | |
6cd62ccf |
22 | #ifndef PARSER_H |
23 | #define PARSER_H |
24 | |
25 | /* Extensible array container */ |
26 | |
27 | typedef struct _sequence { |
28 | int size; |
29 | int position; |
30 | void **array; |
31 | } sequence; |
32 | |
33 | void sequence_init(sequence *t); |
34 | void sequence_dispose(sequence *t); |
35 | void sequence_push(sequence *t, void *elem); |
36 | void *sequence_pop(sequence *t); |
37 | |
38 | |
39 | /* Hash table */ |
40 | |
41 | typedef struct _table { |
42 | sequence keys; |
43 | sequence values; |
44 | } table; |
45 | |
46 | void table_init(table *t); |
47 | void table_dispose(table *t); |
48 | void table_insert(table *t, char *key, void *value); |
49 | void *table_find(table *t, char *key); |
50 | void table_insert_int(table *t, int *key, void *value); |
51 | void *table_find_int(table *t, int *key); |
52 | |
53 | |
54 | /* Token types */ |
55 | |
56 | typedef enum _token_type { |
57 | ENDFILE, |
963b5f2d |
58 | FORWARDSLASH, |
59 | LANGLEBRACKET, |
60 | RANGLEBRACKET, |
6cd62ccf |
61 | EQUAL, |
62 | QUOTEDSTRING, |
63 | NUMBER, |
64 | NAME |
65 | } token_type; |
66 | |
67 | |
68 | /* State associated with a file being parsed */ |
69 | typedef struct _parse_file { |
70 | char *name; |
71 | FILE * fp; |
72 | int lineno; |
73 | char *buffer; |
74 | token_type type; |
75 | int unget; |
76 | void (*error) (struct _parse_file *, char *); |
77 | } parse_file; |
78 | |
79 | void ungetToken(parse_file * in); |
80 | char *getToken(parse_file *in); |
963b5f2d |
81 | char *getForwardslash(parse_file *in); |
82 | char *getLAnglebracket(parse_file *in); |
83 | char *getRAnglebracket(parse_file *in); |
6cd62ccf |
84 | char *getQuotedString(parse_file *in); |
85 | char *getName(parse_file *in); |
963b5f2d |
86 | int getNumber(parse_file *in); |
87 | char *getEqual(parse_file *in); |
88 | char seekNextChar(parse_file *in); |
6cd62ccf |
89 | |
90 | void skipComment(parse_file * in); |
91 | void skipEOL(parse_file * in); |
92 | int isalpha(char car); |
93 | int isalnum(char car); |
94 | |
95 | /* Some constants */ |
96 | |
97 | static const int BUFFER_SIZE = 1024; |
98 | |
99 | |
100 | /* Events data types */ |
101 | |
102 | typedef enum _data_type { |
103 | INT, |
104 | UINT, |
105 | FLOAT, |
106 | STRING, |
107 | ENUM, |
108 | ARRAY, |
109 | SEQUENCE, |
110 | STRUCT, |
963b5f2d |
111 | UNION, |
6cd62ccf |
112 | NONE |
113 | } data_type; |
114 | |
115 | |
116 | /* Event type descriptors */ |
117 | |
118 | typedef struct _type_descriptor { |
119 | char * type_name; //used for named type |
120 | data_type type; |
121 | char *fmt; |
122 | int size; |
123 | sequence labels; // for enumeration |
124 | sequence fields; // for structure |
125 | struct _type_descriptor *nested_type; // for array and sequence |
126 | } type_descriptor; |
127 | |
128 | |
129 | /* Fields within types */ |
130 | |
131 | typedef struct _field{ |
132 | char *name; |
133 | char *description; |
134 | type_descriptor *type; |
135 | } field; |
136 | |
137 | |
138 | /* Events definitions */ |
139 | |
140 | typedef struct _event { |
141 | char *name; |
142 | char *description; |
143 | type_descriptor *type; |
6cd62ccf |
144 | } event; |
145 | |
963b5f2d |
146 | typedef struct _facility { |
147 | char * name; |
148 | char * description; |
149 | sequence events; |
150 | sequence unnamed_types; |
151 | table named_types; |
152 | } facility; |
153 | |
6cd62ccf |
154 | int getSize(parse_file *in); |
963b5f2d |
155 | unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type); |
6cd62ccf |
156 | |
963b5f2d |
157 | void parseFacility(parse_file *in, facility * fac); |
6cd62ccf |
158 | void parseEvent(parse_file *in, event *ev, sequence * unnamed_types, table * named_types); |
159 | void parseTypeDefinition(parse_file *in, sequence * unnamed_types, table * named_types); |
160 | type_descriptor *parseType(parse_file *in, type_descriptor *t, sequence * unnamed_types, table * named_types); |
161 | void parseFields(parse_file *in, type_descriptor *t, sequence * unnamed_types, table * named_types); |
162 | void checkNamedTypesImplemented(table * namedTypes); |
163 | type_descriptor * find_named_type(char *name, table * named_types); |
164 | void generateChecksum(char * facName, unsigned long * checksum, sequence * events); |
165 | |
166 | |
963b5f2d |
167 | /* get attributes */ |
168 | char * getNameAttribute(parse_file *in); |
169 | char * getFormatAttribute(parse_file *in); |
170 | int getSizeAttribute(parse_file *in); |
171 | int getValueAttribute(parse_file *in); |
172 | char * getValueStrAttribute(parse_file *in); |
173 | |
174 | char * getDescription(parse_file *in); |
175 | |
6cd62ccf |
176 | |
177 | static char *intOutputTypes[] = { |
178 | "int8_t", "int16_t", "int32_t", "int64_t", "short int", "int", "long int" }; |
179 | |
180 | static char *uintOutputTypes[] = { |
181 | "uint8_t", "uint16_t", "uint32_t", "uint64_t", "unsigned short int", |
182 | "unsigned int", "unsigned long int" }; |
183 | |
184 | static char *floatOutputTypes[] = { |
185 | "undef", "undef", "float", "double", "undef", "float", "double" }; |
186 | |
187 | |
188 | /* Dynamic memory allocation and freeing */ |
189 | |
190 | void * memAlloc(int size); |
191 | char *allocAndCopy(char * str); |
192 | char *appendString(char *s, char *suffix); |
193 | void freeTypes(sequence *t); |
194 | void freeType(type_descriptor * td); |
195 | void freeEvents(sequence *t); |
196 | void freeNamedType(table * t); |
197 | void error_callback(parse_file *in, char *msg); |
198 | |
199 | |
200 | //checksum part |
201 | static const unsigned int crctab32[] = |
202 | { |
203 | #include "crc32.tab" |
204 | }; |
205 | |
206 | static inline unsigned long |
207 | partial_crc32_one(unsigned char c, unsigned long crc) |
208 | { |
209 | return crctab32[(crc ^ c) & 0xff] ^ (crc >> 8); |
210 | } |
211 | |
212 | static inline unsigned long |
213 | partial_crc32(const char *s, unsigned long crc) |
214 | { |
215 | while (*s) |
216 | crc = partial_crc32_one(*s++, crc); |
217 | return crc; |
218 | } |
219 | |
220 | static inline unsigned long |
221 | crc32(const char *s) |
222 | { |
223 | return partial_crc32(s, 0xffffffff) ^ 0xffffffff; |
224 | } |
225 | |
226 | |
227 | #endif // PARSER_H |