X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt%2Fbranches%2Fpoly%2Fltt%2Fparser.c;h=28ebaeea9dba2e5a99eac16c404be0f62d81d000;hb=54be3e479151d0279429f7fbecd111431650c58f;hp=2851188f34ddd6e961ba078f113091e2144b892c;hpb=6cd62ccfe338056a2a7571addbb63e0e16354e86;p=lttv.git

diff --git a/ltt/branches/poly/ltt/parser.c b/ltt/branches/poly/ltt/parser.c
index 2851188f..28ebaeea 100644
--- a/ltt/branches/poly/ltt/parser.c
+++ b/ltt/branches/poly/ltt/parser.c
@@ -3,14 +3,15 @@
 parser.c: Generate helper declarations and functions to trace events
   from an event description file.
 
-Copyright (C) 2002, Xianxiu Yang
-Copyright (C) 2002, Michel Dagenais 
-This program is free software; you can redistribute it and/or modify
+	    Copyright (C) 2005, Mathieu Desnoyers
+      Copyright (C) 2002, Xianxiu Yang
+      Copyright (C) 2002, Michel Dagenais 
+   This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-the Free Software Foundation; version 2 of the License.
+   the Free Software Foundation; version 2 of the License.
 
-This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
@@ -19,9 +20,8 @@ This program is distributed in the hope that it will be useful,
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */
 
-/* This program reads the ".event" event definitions input files 
-   specified as command line arguments and generates corresponding
-   ".c" and ".h" files required to trace such events in the kernel.
+/* This program reads the ".xml" event definitions input files 
+   and constructs structure for each event.
  
    The program uses a very simple tokenizer, called from a hand written
    recursive descent parser to fill a data structure describing the events.
@@ -31,18 +31,60 @@ This program is distributed in the hope that it will be useful,
    A table of named types is maintained to allow refering to types by name
    when the same type is used at several places. Finally a sequence of
    all types is maintained to facilitate the freeing of all type 
-   information when the processing of an ".event" file is finished. */
+   information when the processing of an ".xml" file is finished. */
 
 #include <stdlib.h> 
 #include <string.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <linux/errno.h>  
-
+#include <assert.h>
+#include <ctype.h>
 
 #include "parser.h"
 
 
+char *intOutputTypes[] = {
+  "int8_t", "int16_t", "int32_t", "int64_t" };
+
+char *uintOutputTypes[] = {
+  "uint8_t", "uint16_t", "uint32_t", "uint64_t" };
+
+char *floatOutputTypes[] = {
+  "undef", "undef", "float", "double" };
+
+
+
+
+/* helper function  */
+void strupper(char *string)
+{
+  char *ptr = string;
+  
+  while(*ptr != '\0') {
+    *ptr = toupper(*ptr);
+		ptr++;
+  }
+}
+
+
+int getSizeindex(unsigned int value)
+{ 
+  switch(value) {
+    case 1:
+      return 0;
+    case 2:
+      return 1;
+    case 4:
+      return 2;
+    case 8:
+      return 3;
+    default:
+      printf("Error : unknown value size %d\n", value);
+      exit(-1);
+  }
+}
+
 /*****************************************************************************
  *Function name
  *    getSize    : translate from string to integer
@@ -52,22 +94,29 @@ This program is distributed in the hope that it will be useful,
  *    size                           
  *****************************************************************************/
 
-int getSize(parse_file *in)
+unsigned long long int getSize(parse_file_t *in)
 {
   char *token;
+	int has_quotes = 0;
+	unsigned long long int ret;
 
   token = getToken(in);
+	if(token[0] == '"') {
+		has_quotes = 1;
+		token = getToken(in);
+	}
   if(in->type == NUMBER) {
-    if(strcmp(token,"1") == 0) return 0;
-    else if(strcmp(token,"2") == 0) return 1;
-    else if(strcmp(token,"4") == 0) return 2;
-    else if(strcmp(token,"8") == 0) return 3;
-  }
-  else if(in->type == NAME) {
-    if(strcmp(token,"short") == 0) return 4;
-    else if(strcmp(token,"medium") == 0) return 5;
-    else if(strcmp(token,"long") == 0) return 6;
-  }
+		ret = strtoull(token, NULL, 0);
+  } else {
+		goto error;
+	}
+	if(has_quotes) {
+		token = getToken(in);
+		if(token[0] != '"') goto error;
+	}
+		
+	return ret;
+error:
   in->error(in,"incorrect size specification");
   return -1;
 }
@@ -80,12 +129,13 @@ int getSize(parse_file *in)
  *    msg             : message to be printed                  
  ****************************************************************************/
 
-void error_callback(parse_file *in, char *msg)
+void error_callback(parse_file_t *in, char *msg)
 {
   if(in)
     printf("Error in file %s, line %d: %s\n", in->name, in->lineno, msg);
   else
     printf("%s\n",msg);
+  assert(0);
   exit(1);
 }
 
@@ -100,7 +150,9 @@ void error_callback(parse_file *in, char *msg)
 
 void * memAlloc(int size)
 {
-  void *addr = malloc(size);
+  void * addr;
+  if(size == 0) return NULL;
+  addr = malloc(size);
   if(!addr){
     printf("Failed to allocate memory");    
     exit(1);
@@ -119,11 +171,337 @@ void * memAlloc(int size)
 
 char *allocAndCopy(char *str)
 {
-  char *addr = (char *)memAlloc(strlen(str)+1);
+  char * addr;
+  if(str == NULL) return NULL;
+  addr = (char *)memAlloc(strlen(str)+1);
   strcpy(addr,str);
   return addr;
 }
 
+/**************************************************************************
+ * Function :
+ *    getTypeAttributes
+ * Description :
+ *    Read the attribute from the input file.
+ *
+ * Parameters :
+ *    in , input file handle.
+ *    t , the type descriptor to fill.
+ *
+ **************************************************************************/
+
+void getTypeAttributes(parse_file_t *in, type_descriptor_t *t,
+			   sequence_t * unnamed_types, table_t * named_types) 
+{
+  char * token;
+
+  t->fmt = NULL;
+  t->size = 0;
+  t->custom_write = 0;
+	t->network = 0;
+  
+  while(1) {
+    token = getToken(in); 
+    if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+      ungetToken(in);
+      break;
+    }
+    
+    if(!strcmp("format",token)) {
+      getEqual(in);
+      t->fmt = allocAndCopy(getQuotedString(in));
+    //} else if(!strcmp("name",token)) {
+     // getEqual(in);
+     // car = seekNextChar(in);
+     // if(car == EOF) in->error(in,"name was expected");
+     // else if(car == '\"') t->type_name = allocAndCopy(getQuotedString(in));
+     // else t->type_name = allocAndCopy(getName(in));
+    } else if(!strcmp("size",token)) {
+      getEqual(in);
+      t->size = getSize(in);
+    } else if(!strcmp("custom_write", token)) {
+      t->custom_write = 1;
+    } else if(!strcmp("network", token)) {
+			t->network = 1;
+		}
+  }
+}
+
+/**************************************************************************
+ * Function :
+ *    getEventAttributes
+ * Description :
+ *    Read the attribute from the input file.
+ *
+ * Parameters :
+ *    in , input file handle.
+ *    ev , the event to fill.
+ *
+ **************************************************************************/
+
+void getEventAttributes(parse_file_t *in, event_t *ev)
+{
+  char * token;
+  char car;
+  
+  ev->name = NULL;
+  ev->per_trace = 0;
+  ev->per_tracefile = 0;
+  ev->param_buffer = 0;
+	ev->no_instrument_function = 0;
+
+  while(1) {
+    token = getToken(in); 
+    if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+      ungetToken(in);
+      break;
+    }
+
+    if(!strcmp("name",token)) {
+      getEqual(in);
+      car = seekNextChar(in);
+      if(car == EOF) in->error(in,"name was expected");
+      else if(car == '\"') ev->name = allocAndCopy(getQuotedString(in));
+      else ev->name = allocAndCopy(getName(in));
+    } else if(!strcmp("per_trace", token)) {
+      ev->per_trace = 1;
+    } else if(!strcmp("per_tracefile", token)) {
+      ev->per_tracefile = 1;
+    } else if(!strcmp("param_buffer", token)) {
+			ev->param_buffer = 1;
+		} else if(!strcmp("no_instrument_function", token)) {
+			ev->no_instrument_function = 1;
+		}
+
+  }
+}
+
+/**************************************************************************
+ * Function :
+ *    getFacilityAttributes
+ * Description :
+ *    Read the attribute from the input file.
+ *
+ * Parameters :
+ *    in , input file handle.
+ *    fac , the facility to fill.
+ *
+ **************************************************************************/
+
+void getFacilityAttributes(parse_file_t *in, facility_t *fac)
+{
+  char * token;
+  char car;
+  
+  fac->name = NULL;
+  fac->arch = NULL;
+	fac->user = 0;
+
+  while(1) {
+    token = getToken(in); 
+    if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+      ungetToken(in);
+      break;
+    }
+
+    if(!strcmp("name",token)) {
+      getEqual(in);
+      car = seekNextChar(in);
+      if(car == EOF) in->error(in,"name was expected");
+      else if(car == '\"') fac->name = allocAndCopy(getQuotedString(in));
+      else fac->name = allocAndCopy(getName(in));
+			if(!strncmp(fac->name, "user_", sizeof("user_")) == 0)
+				fac->user = 1;
+    } else if(!strcmp("arch", token)) {
+      getEqual(in);
+      car = seekNextChar(in);
+      if(car == '\"') fac->name = allocAndCopy(getQuotedString(in));
+			else fac->arch = allocAndCopy(getName(in));
+		}
+  }
+}
+
+/**************************************************************************
+ * Function :
+ *    getFieldAttributes
+ * Description :
+ *    Read the attribute from the input file.
+ *
+ * Parameters :
+ *    in , input file handle.
+ *    f , the field to fill.
+ *
+ **************************************************************************/
+
+void getFieldAttributes(parse_file_t *in, field_t *f)
+{
+  char * token;
+  char car;
+
+  f->name = NULL;
+
+  while(1) {
+    token = getToken(in); 
+    if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+      ungetToken(in);
+      break;
+    }
+
+    if(!strcmp("name",token)) {
+      getEqual(in);
+      car = seekNextChar(in);
+      if(car == EOF) in->error(in,"name was expected");
+      else if(car == '\"') f->name = allocAndCopy(getQuotedString(in));
+      else f->name = allocAndCopy(getName(in));
+    }
+	}
+}
+
+char *getNameAttribute(parse_file_t *in)
+{
+  char * token;
+  char *name = NULL;
+  char car;
+  
+  while(1) {
+    token = getToken(in); 
+    if(!strcmp("name",token)) {
+      getEqual(in);
+      car = seekNextChar(in);
+      if(car == EOF) in->error(in,"name was expected");
+      else if(car == '\"') name = allocAndCopy(getQuotedString(in));
+      else name = allocAndCopy(getName(in));
+    } else {
+      ungetToken(in);
+      break;
+    }
+
+  }
+  if(name == NULL) in->error(in, "Name was expected");
+  return name;
+}
+
+
+
+//for <label name=label_name value=n format="..."/>, value is an option
+//Return value : 0 : no value,   1 : has a value
+int getValueAttribute(parse_file_t *in, long long *value)
+{
+  char * token;
+	int has_quotes = 0;
+
+  token = getToken(in); 
+  if(strcmp("/",token) == 0){
+    ungetToken(in);
+    return 0;
+  }
+  
+  if(strcmp("value",token))in->error(in,"value was expected");
+  getEqual(in);
+  token = getToken(in);
+
+	if(token[0] == '"') {
+		has_quotes = 1;
+		token = getToken(in);
+	}
+  if(in->type == NUMBER) {
+		*value = strtoll(token, NULL, 0);
+  } else {
+		goto error;
+	}
+	if(has_quotes) {
+		token = getToken(in);
+		if(token[0] != '"') goto error;
+	}
+  return 1;
+
+error:
+  in->error(in,"incorrect size specification");
+  return 0;
+}
+
+char * getDescription(parse_file_t *in)
+{
+  long int pos;
+  char * token, car, *str;
+
+  pos = ftell(in->fp);
+
+  getLAnglebracket(in);
+  token = getName(in);
+  if(strcmp("description",token)){
+    fseek(in->fp, pos, SEEK_SET);
+    return NULL;
+  }
+  
+  getRAnglebracket(in);
+
+  pos = 0;
+  while((car = getc(in->fp)) != EOF) {
+    if(car == '<') break;
+    if(car == '\0') continue;
+    in->buffer[pos] = car;
+    pos++;
+  }
+  if(car == EOF)in->error(in,"not a valid description");
+  in->buffer[pos] = '\0';
+
+  str = allocAndCopy(in->buffer);
+
+  getForwardslash(in);
+  token = getName(in);
+  if(strcmp("description", token))in->error(in,"not a valid description");
+  getRAnglebracket(in);
+
+  return str;
+}
+
+/*****************************************************************************
+ *Function name
+ *    parseFacility : generate event list  
+ *Input params 
+ *    in            : input file handle          
+ *    fac           : empty facility
+ *Output params
+ *    fac           : facility filled with event list
+ ****************************************************************************/
+
+void parseFacility(parse_file_t *in, facility_t * fac)
+{
+  char * token;
+  event_t *ev;
+  
+  getFacilityAttributes(in, fac);
+  if(fac->name == NULL) in->error(in, "Attribute not named");
+	
+  fac->capname = allocAndCopy(fac->name);
+	strupper(fac->capname);
+  getRAnglebracket(in);    
+  
+  fac->description = getDescription(in);
+  
+  while(1){
+    getLAnglebracket(in);    
+
+    token = getToken(in);
+    if(in->type == ENDFILE)
+      in->error(in,"the definition of the facility is not finished");
+
+    if(strcmp("event",token) == 0){
+      ev = (event_t*) memAlloc(sizeof(event_t));
+      sequence_push(&(fac->events),ev);
+      parseEvent(in,ev, &(fac->unnamed_types), &(fac->named_types));    
+    }else if(strcmp("type",token) == 0){
+      parseTypeDefinition(in, &(fac->unnamed_types), &(fac->named_types));
+    }else if(in->type == FORWARDSLASH){
+      break;
+    }else in->error(in,"event or type token expected\n");
+  }
+
+  token = getName(in);
+  if(strcmp("facility",token)) in->error(in,"not the end of the facility");
+  getRAnglebracket(in); //</facility>
+}
 
 /*****************************************************************************
  *Function name
@@ -131,88 +509,113 @@ char *allocAndCopy(char *str)
  *Input params 
  *    in            : input file handle          
  *    ev            : new event                              
+ *    unnamed_types : array of unamed types
+ *    named_types   : array of named types
  *Output params    
  *    ev            : new event (parameters are passed to it)   
  ****************************************************************************/
 
-void parseEvent(parse_file *in, event * ev, sequence * unnamed_types, 
-		table * named_types) 
+void parseEvent(parse_file_t *in, event_t * ev, sequence_t * unnamed_types, 
+		table_t * named_types) 
 {
   char *token;
-  type_descriptor *t;
+	field_t *f;
 
-  getLParenthesis(in);
-  token = getName(in);
-  ev->name = allocAndCopy(token);
-  getComa(in);
+	sequence_init(&(ev->fields));
+  //<event name=eventtype_name>
+  getEventAttributes(in, ev);
+  if(ev->name == NULL) in->error(in, "Event not named");
+  getRAnglebracket(in);  
 
-  token = getQuotedString(in);
-  ev->description = allocAndCopy(token);
+  //<description>...</description>
+  ev->description = getDescription(in); 
   
-  token = getToken(in); //token either is a ',' or a ')'
-  if(in->type == COMA) token = getName(in);
-  ungetToken(in);
-
-  /* We have a possibly empty list of fields, containing struct implied */
-  if((in->type == NAME && strcmp(token,"field") == 0) || 
-      in->type == RPARENTHESIS) {
-    /* Insert an unnamed struct type */
-    t = (type_descriptor *)memAlloc(sizeof(type_descriptor));
-    t->type_name = NULL;
-    t->type = STRUCT;
-    t->fmt = NULL;
-    if(in->type == NAME) parseFields(in,t, unnamed_types, named_types);
-    else if(in->type == RPARENTHESIS) sequence_init(&(t->fields));      
-    sequence_push(unnamed_types,t);
-    ev->type = t;
-  }
-
-  /* Or a complete type declaration but it must be a struct */
-  else if(in->type == NAME){
-    ev->type = parseType(in,NULL, unnamed_types, named_types);
-    if(ev->type->type != STRUCT && ev->type->type != NONE) in->error(in,"type must be a struct");
-  }else in->error(in,"not a struct type");
-
-  getRParenthesis(in);
-  getSemiColon(in);
+	int got_end = 0;
+	/* Events can have multiple fields. each field form at least a function
+	 * parameter of the logging function. */
+	while(!got_end) {
+		getLAnglebracket(in);
+		token = getToken(in);
+		
+		switch(in->type) {
+		case FORWARDSLASH:	/* </event> */
+			token = getName(in);
+			if(strcmp("event",token))in->error(in,"not an event definition");
+			getRAnglebracket(in);  //</event>
+			got_end = 1;
+			break;
+		case NAME: /* a field */
+			if(strcmp("field",token))in->error(in,"expecting a field");
+			f = (field_t *)memAlloc(sizeof(field_t));
+			sequence_push(&(ev->fields),f);
+			parseFields(in, f, unnamed_types, named_types, 1);
+			break;
+		default:
+			in->error(in, "expecting </event> or <field >");
+			break;
+		}
+	}
+#if 0
+		if(in->type == FORWARDSLASH){ //</event> NOTHING
+			ev->type = NULL;
+		}else if(in->type == NAME){
+			if(strcmp("struct",token)==0 || strcmp("typeref",token)==0){
+				ungetToken(in);
+				ev->type = parseType(in,NULL, unnamed_types, named_types);
+				if(ev->type->type != STRUCT && ev->type->type != NONE) 
+		in->error(in,"type must be a struct");     
+			}else in->error(in, "not a valid type");
+
+			getLAnglebracket(in);
+			getForwardslash(in);    
+		}else in->error(in,"not a struct type");
+		getLAnglebracket(in);
+		getForwardslash(in);    
+		token = getName(in);
+		if(strcmp("event",token))in->error(in,"not an event definition");
+		getRAnglebracket(in);  //</event>
+#endif //0
 }
 
 /*****************************************************************************
  *Function name
- *    parseField  : get field infomation from buffer 
+ *    parseField    : get field infomation from buffer 
  *Input params 
- *    in          : input file handle
- *    t           : type descriptor
+ *    in            : input file handle
+ *    f             : field
+ *    unnamed_types : array of unamed types
+ *    named_types   : array of named types
+ *    tag						: is field surrounded by a <field> </field> tag ?
  ****************************************************************************/
 
-void parseFields(parse_file *in, type_descriptor *t, sequence * unnamed_types,
-		 table * named_types) 
+void parseFields(parse_file_t *in, field_t *f,
+    sequence_t * unnamed_types,
+		table_t * named_types,
+		int tag) 
 {
   char * token;
-  field *f;
-
-  sequence_init(&(t->fields));
-
-  token = getToken(in);
-  while(in->type == NAME && strcmp(token,"field") == 0) {
-    f = (field *)memAlloc(sizeof(field));
-    sequence_push(&(t->fields),f);
-
-    getLParenthesis(in);
-    f->name = (char *)allocAndCopy(getName(in));
-    getComa(in);
-    f->description = (char *)allocAndCopy(getQuotedString(in));
-    getComa(in);
-    f->type = parseType(in,NULL, unnamed_types, named_types);
-    getRParenthesis(in);
-    
-    token = getToken(in);
-    if(in->type == COMA) token = getName(in);
-    else ungetToken(in); // no more fields, it must be a ')'
-  }
-
-  if(in->type == NAME && strcmp(token,"field") != 0)
-    in->error(in,"not a field");
+	if(tag) {
+		//<field name=field_name> <description> <type> </field>
+		getFieldAttributes(in, f);
+		if(f->name == NULL) in->error(in, "Field not named");
+		getRAnglebracket(in);
+
+		f->description = getDescription(in);
+	} else {
+		f->description = NULL;
+	}
+
+  //<int size=...>
+  getLAnglebracket(in);
+  f->type = parseType(in,NULL, unnamed_types, named_types);
+
+	if(tag) {
+		getLAnglebracket(in);
+		getForwardslash(in);
+		token = getName(in);
+		if(strcmp("field",token))in->error(in,"not a valid field definition");
+		getRAnglebracket(in); //</field>
+	}
 }
 
 
@@ -230,18 +633,21 @@ void parseFields(parse_file *in, type_descriptor *t, sequence * unnamed_types,
  *Input params 
  *    in               : input file handle
  *    inType           : a type descriptor          
+ *    unnamed_types    : array of unamed types
+ *    named_types      : array of named types
  *Return values  
  *    type_descriptor* : a type descriptor             
  ****************************************************************************/
 
-type_descriptor *parseType(parse_file *in, type_descriptor *inType, 
-			   sequence * unnamed_types, table * named_types) 
+type_descriptor_t *parseType(parse_file_t *in, type_descriptor_t *inType, 
+			   sequence_t * unnamed_types, table_t * named_types) 
 {
-  char *token, *car;
-  type_descriptor *t;
+  char *token;
+  type_descriptor_t *t;
+	field_t *f;
 
   if(inType == NULL) {
-    t = (type_descriptor *) memAlloc(sizeof(type_descriptor));
+    t = (type_descriptor_t *) memAlloc(sizeof(type_descriptor_t));
     t->type_name = NULL;
     t->type = NONE;
     t->fmt = NULL;
@@ -253,118 +659,286 @@ type_descriptor *parseType(parse_file *in, type_descriptor *inType,
 
   if(strcmp(token,"struct") == 0) {
     t->type = STRUCT;
-    getLParenthesis(in);
-    parseFields(in,t, unnamed_types, named_types);
-    getRParenthesis(in);
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getRAnglebracket(in); //<struct>
+    getLAnglebracket(in); //<field name=..>
+    token = getToken(in);
+    sequence_init(&(t->fields));
+    while(strcmp("field",token) == 0){
+			f = (field_t *)memAlloc(sizeof(field_t));
+			sequence_push(&(t->fields),f);
+
+      parseFields(in, f, unnamed_types, named_types, 1);
+      
+      //next field
+      getLAnglebracket(in);
+      token = getToken(in);	
+    }
+    if(strcmp("/",token))in->error(in,"not a valid structure definition");
+    token = getName(in);
+    if(strcmp("struct",token)!=0)
+      in->error(in,"not a valid structure definition");
+    getRAnglebracket(in); //</struct>
+  }
+  else if(strcmp(token,"union") == 0) {
+    t->type = UNION;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getRAnglebracket(in); //<union>
+
+    getLAnglebracket(in); //<field name=..>
+    token = getToken(in);
+    sequence_init(&(t->fields));
+    while(strcmp("field",token) == 0){
+			f = (field_t *)memAlloc(sizeof(field_t));
+			sequence_push(&(t->fields),f);
+      parseFields(in, f, unnamed_types, named_types, 1);
+      
+      //next field
+      getLAnglebracket(in);
+      token = getToken(in);	
+    }
+    if(strcmp("/",token))in->error(in,"not a valid union definition");
+    token = getName(in);
+    if(strcmp("union",token)!=0)
+      in->error(in,"not a valid union definition");        
+    getRAnglebracket(in); //</union>
   }
   else if(strcmp(token,"array") == 0) {
     t->type = ARRAY;
-    getLParenthesis(in);
-    t->size = getNumber(in);
-    getComa(in);
-    t->nested_type = parseType(in,NULL, unnamed_types, named_types);
-    getRParenthesis(in);
+    sequence_init(&(t->fields));
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    if(t->size == 0) in->error(in, "Array has empty size");
+    getForwardslash(in);
+    getRAnglebracket(in); //<array size=n>
+
+    //getLAnglebracket(in); //<subtype> 
+		/* subfield */
+		f = (field_t *)memAlloc(sizeof(field_t));
+		sequence_push(&(t->fields),f);
+    parseFields(in, f, unnamed_types, named_types, 0);
+
+    //getLAnglebracket(in); //<type struct> 
+    //t->nested_type = parseType(in, NULL, unnamed_types, named_types);
+
+    getLAnglebracket(in); //</array>
+    getForwardslash(in);
+    token = getName(in);
+    if(strcmp("array",token))in->error(in,"not a valid array definition");
+    getRAnglebracket(in);  //</array>
   }
   else if(strcmp(token,"sequence") == 0) {
     t->type = SEQUENCE;
-    getLParenthesis(in);
-    t->size = getSize(in);
-    getComa(in);
-    t->nested_type = parseType(in,NULL, unnamed_types, named_types);
-    getRParenthesis(in);
+    sequence_init(&(t->fields));
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); //<sequence>
+
+    //getLAnglebracket(in); //<sequence size type> 
+		/* subfield */
+		f = (field_t *)memAlloc(sizeof(field_t));
+		sequence_push(&(t->fields),f);
+    parseFields(in, f, unnamed_types, named_types, 0);
+
+    //getLAnglebracket(in); //<subtype> 
+		/* subfield */
+		f = (field_t *)memAlloc(sizeof(field_t));
+		sequence_push(&(t->fields),f);
+    parseFields(in, f, unnamed_types, named_types, 0);
+
+    //getLAnglebracket(in); //<type sequence> 
+    //t->length_type = parseType(in, NULL, unnamed_types, named_types);
+
+    //getLAnglebracket(in); //<type sequence> 
+
+    //t->nested_type = parseType(in, NULL, unnamed_types, named_types);
+
+    if(t->fields.position < 1) in->error(in, "Sequence has no length type");
+    if(t->fields.position < 2) in->error(in, "Sequence has no subtype");
+		switch(((field_t*)t->fields.array[0])->type->type) {
+			case UINT_FIXED :
+			case UCHAR :
+			case USHORT :
+			case UINT :
+			case ULONG :
+			case SIZE_T :
+			case OFF_T :
+				break;
+			default:
+				in->error(in, "Wrong length type for sequence");
+		}
+
+    getLAnglebracket(in); //</sequence>
+    getForwardslash(in);
+    token = getName(in);
+    if(strcmp("sequence",token))in->error(in,"not a valid sequence definition");
+    getRAnglebracket(in); //</sequence>
   }
   else if(strcmp(token,"enum") == 0) {
+    char * str;
+    long long value = -1;
+
     t->type = ENUM;
     sequence_init(&(t->labels));
-    getLParenthesis(in);
-    t->size = getSize(in);
-    getComa(in);
-    token = getToken(in);
-    if(in->type == QUOTEDSTRING){
-      t->fmt = allocAndCopy(token);
-      getComa(in);
-    }else ungetToken(in);
-    getLParenthesis(in);
-
-    token = getToken(in);
-    while(in->type != RPARENTHESIS) {
-      if(in->type != NAME) in->error(in,"Name token was expected");
-      car = allocAndCopy(token);
-      token = getToken(in);
-      if(in->type == COMA){
-	sequence_push(&(t->labels),allocAndCopy(car));
-	token = getName(in);
-      }else if(in->type == EQUAL){ //label followed by '=' and a number, e.x. label1 = 1,
-	car = appendString(car, token);
-	token = getToken(in);
-	if(in->type != NUMBER) in->error(in,"Number token was expected");
-	car = appendString(car, token);
-	sequence_push(&(t->labels),allocAndCopy(car));	
-	token = getToken(in);
-	if(in->type == COMA) token = getName(in);
-	else ungetToken(in);
-      }else{
-	sequence_push(&(t->labels),allocAndCopy(car));
-	ungetToken(in);
-      }
-    }  
-    getRParenthesis(in);
-    getRParenthesis(in);
+    sequence_init(&(t->labels_values));
+    sequence_init(&(t->labels_description));
+		t->already_printed = 0;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    //if(t->size == 0) in->error(in, "Sequence has empty size");
+		//Mathieu : we fix enum size to target int size. GCC is always like this.
+		//fox copy optimisation.
+    if(t->size != 0) in->error(in, "Enum has fixed size of target int.");
+		t->size = 0;
+    getRAnglebracket(in);
+
+    //<label name=label1 value=n/>
+    getLAnglebracket(in);
+    token = getToken(in); //"label" or "/"
+    while(strcmp("label",token) == 0){
+      int *label_value = malloc(sizeof(int));
+			int has_value = 0;
+			long long loc_value;
+      
+      str   = allocAndCopy(getNameAttribute(in));
+      has_value = getValueAttribute(in, &loc_value);
+      
+     	sequence_push(&(t->labels),str);
+
+      if(has_value) value = loc_value;
+      else value++;
+
+      *label_value = value;
+      sequence_push(&(t->labels_values), label_value);
+
+      getForwardslash(in);
+      getRAnglebracket(in);
+      
+      //read description if any. May be NULL.
+      str = allocAndCopy(getDescription(in));
+			sequence_push(&(t->labels_description),str);
+			      
+      //next label definition
+      getLAnglebracket(in);
+      token = getToken(in); //"label" or "/"      
+    }
+    if(strcmp("/",token))in->error(in, "not a valid enum definition");
+    token = getName(in);
+    if(strcmp("enum",token))in->error(in, "not a valid enum definition");
+      getRAnglebracket(in); //</label>
+  }
+  else if(strcmp(token,"int_fixed") == 0) {
+    t->type = INT_FIXED;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    if(t->size == 0) in->error(in, "int has empty size");
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"uint_fixed") == 0) {
+    t->type = UINT_FIXED;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    if(t->size == 0) in->error(in, "uint has empty size");
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"char") == 0) {
+    t->type = CHAR;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+		t->size = 1;
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"uchar") == 0) {
+    t->type = UCHAR;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+		t->size = 1;
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"short") == 0) {
+    t->type = SHORT;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+		t->size = 2;
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"ushort") == 0) {
+    t->type = USHORT;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+		t->size = 2;
+    getForwardslash(in);
+    getRAnglebracket(in); 
   }
   else if(strcmp(token,"int") == 0) {
     t->type = INT;
-    getLParenthesis(in);
-    t->size = getSize(in);
-    token = getToken(in);
-    if(in->type == COMA) {
-      token = getQuotedString(in);
-      t->fmt = allocAndCopy(token);
-    }
-    else ungetToken(in);
-    getRParenthesis(in);
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
   }
   else if(strcmp(token,"uint") == 0) {
     t->type = UINT;
-    getLParenthesis(in);
-    t->size = getSize(in);
-    token = getToken(in);
-    if(in->type == COMA) {
-      token = getQuotedString(in);
-      t->fmt = allocAndCopy(token);
-    }
-    else ungetToken(in);
-    getRParenthesis(in);
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+
+  else if(strcmp(token,"pointer") == 0) {
+    t->type = POINTER;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"long") == 0) {
+    t->type = LONG;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"ulong") == 0) {
+    t->type = ULONG;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"size_t") == 0) {
+    t->type = SIZE_T;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"ssize_t") == 0) {
+    t->type = SSIZE_T;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
+  }
+  else if(strcmp(token,"off_t") == 0) {
+    t->type = OFF_T;
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
   }
   else if(strcmp(token,"float") == 0) {
     t->type = FLOAT;
-    getLParenthesis(in);
-    t->size = getSize(in);
-    token = getToken(in);
-    if(in->type == COMA) {
-      token = getQuotedString(in);
-      t->fmt = allocAndCopy(token);
-    }
-    else ungetToken(in);
-    getRParenthesis(in);
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
   }
   else if(strcmp(token,"string") == 0) {
     t->type = STRING;
-    getLParenthesis(in);
-    token = getToken(in);
-    if(in->type == QUOTEDSTRING) t->fmt = allocAndCopy(token);
-    else ungetToken(in);
-    getRParenthesis(in);
-  }
-  else {
-    /* Must be a named type */
-    if(inType != NULL) 
-      in->error(in,"Named type cannot refer to a named type");
-    else {
-      free(t);
-      sequence_pop(unnamed_types);
-      return(find_named_type(token, named_types));
-    }
+    getTypeAttributes(in, t, unnamed_types, named_types);
+    getForwardslash(in);
+    getRAnglebracket(in); 
   }
+  else if(strcmp(token,"typeref") == 0){
+    // Must be a named type
+		free(t);
+		sequence_pop(unnamed_types);
+		token = getNameAttribute(in);
+		t = find_named_type(token, named_types);
+		if(t == NULL) in->error(in,"Named referred to must be pre-declared.");
+		getForwardslash(in);  //<typeref name=type_name/>
+		getRAnglebracket(in);
+		return t;
+  }else in->error(in,"not a valid type");
 
   return t;
 }    
@@ -374,53 +948,71 @@ type_descriptor *parseType(parse_file *in, type_descriptor *inType,
  *    find_named_type     : find a named type from hash table 
  *Input params 
  *    name                : type name          
+ *    named_types         : array of named types
  *Return values  
  *    type_descriptor *   : a type descriptor                       
  *****************************************************************************/
 
-type_descriptor * find_named_type(char *name, table * named_types)
+type_descriptor_t * find_named_type(char *name, table_t * named_types)
 { 
-  type_descriptor *t;
+  type_descriptor_t *t;
 
   t = table_find(named_types,name);
-  if(t == NULL) {
-    t = (type_descriptor *)memAlloc(sizeof(type_descriptor));
-    t->type_name = allocAndCopy(name);
-    t->type = NONE;
-    t->fmt = NULL;
-    table_insert(named_types,allocAndCopy(name),t);
-  }
+
   return t;
-}  
+}
+
+type_descriptor_t * create_named_type(char *name, table_t * named_types)
+{
+  type_descriptor_t *t;
+
+	t = (type_descriptor_t *)memAlloc(sizeof(type_descriptor_t));
+	t->type_name = allocAndCopy(name);
+	t->type = NONE;
+	t->fmt = NULL;
+	table_insert(named_types,t->type_name,t);
+	//    table_insert(named_types,allocAndCopy(name),t);
+	return t;
+}
 
 /*****************************************************************************
  *Function name
  *    parseTypeDefinition : get type information from type definition 
  *Input params 
  *    in                  : input file handle          
+ *    unnamed_types       : array of unamed types
+ *    named_types         : array of named types
  *****************************************************************************/
 
-void parseTypeDefinition(parse_file * in, sequence * unnamed_types,
-			 table * named_types)
+void parseTypeDefinition(parse_file_t * in, sequence_t * unnamed_types,
+			 table_t * named_types)
 {
   char *token;
-  type_descriptor *t;
+  type_descriptor_t *t;
 
-  getLParenthesis(in);
-  token = getName(in);
-  t = find_named_type(token, named_types);
-  getComa(in);
+  token = getNameAttribute(in);
+  if(token == NULL) in->error(in, "Type has empty name");
+  t = create_named_type(token, named_types);
 
   if(t->type != NONE) in->error(in,"redefinition of named type");
+  getRAnglebracket(in); //<type name=type_name>
+  getLAnglebracket(in); //<
+  token = getName(in);
+  //MD ??if(strcmp("struct",token))in->error(in,"not a valid type definition");
+  ungetToken(in);
   parseType(in,t, unnamed_types, named_types);
-
-  getRParenthesis(in);
-  getSemiColon(in);
+  
+  //</type>
+  getLAnglebracket(in);
+  getForwardslash(in);
+  token = getName(in);
+  if(strcmp("type",token))in->error(in,"not a valid type definition");  
+  getRAnglebracket(in); //</type>
 }
 
 /**************************************************************************
  * Function :
- *    getComa, getName, getNumber, getLParenthesis, getRParenthesis, getEqual
+ *    getComa, getName, getNumber, getEqual
  * Description :
  *    Read a token from the input file, check its type, return it scontent.
  *
@@ -432,16 +1024,17 @@ void parseTypeDefinition(parse_file * in, sequence * unnamed_types,
  *
  **************************************************************************/
 
-char *getName(parse_file * in) 
+char *getName(parse_file_t * in) 
 {
   char *token;
 
   token = getToken(in);
-  if(in->type != NAME) in->error(in,"Name token was expected");
+  // Optional descriptions
+	// if(in->type != NAME) in->error(in,"Name token was expected");
   return token;
 }
 
-int getNumber(parse_file * in) 
+int getNumber(parse_file_t * in) 
 {
   char *token;
 
@@ -450,34 +1043,37 @@ int getNumber(parse_file * in)
   return atoi(token);
 }
 
-char *getComa(parse_file * in) 
+char *getForwardslash(parse_file_t * in) 
 {
   char *token;
 
   token = getToken(in);
-  if(in->type != COMA) in->error(in, "Coma token was expected");
+  //if(in->type != FORWARDSLASH) in->error(in, "forward slash token was expected");
+	/* Mathieu : final / is optional now. */
+  if(in->type != FORWARDSLASH) ungetToken(in);
+
   return token;
 }
 
-char *getLParenthesis(parse_file * in) 
+char *getLAnglebracket(parse_file_t * in) 
 {
   char *token;
 
   token = getToken(in);
-  if(in->type != LPARENTHESIS) in->error(in, "Left parenthesis was expected");
+  if(in->type != LANGLEBRACKET) in->error(in, "Left angle bracket was expected");
   return token;
 }
 
-char *getRParenthesis(parse_file * in) 
+char *getRAnglebracket(parse_file_t * in) 
 {
   char *token;
 
   token = getToken(in);
-  if(in->type != RPARENTHESIS) in->error(in, "Right parenthesis was expected");
+  if(in->type != RANGLEBRACKET) in->error(in, "Right angle bracket was expected");
   return token;
 }
 
-char *getQuotedString(parse_file * in) 
+char *getQuotedString(parse_file_t * in) 
 {
   char *token;
 
@@ -486,22 +1082,25 @@ char *getQuotedString(parse_file * in)
   return token;
 }
 
-char * getSemiColon(parse_file *in)
+char * getEqual(parse_file_t *in)
 {
   char *token;
 
   token = getToken(in);
-  if(in->type != SEMICOLON) in->error(in, "semicolon was expected");
+  if(in->type != EQUAL) in->error(in, "equal was expected");
   return token;
 }
 
-char * getEqual(parse_file *in)
+char seekNextChar(parse_file_t *in)
 {
-  char *token;
-
-  token = getToken(in);
-  if(in->type != EQUAL) in->error(in, "equal was expected");
-  return token;
+  char car;
+  while((car = getc(in->fp)) != EOF) {
+    if(!isspace(car)){
+      ungetc(car,in->fp);
+      return car;
+    }
+  }  
+  return EOF;
 }
 
 /******************************************************************
@@ -519,12 +1118,12 @@ char * getEqual(parse_file *in)
  *
  ******************************************************************/
 
-void ungetToken(parse_file * in)
+void ungetToken(parse_file_t * in)
 {
   in->unget = 1;
 }
 
-char *getToken(parse_file * in)
+char *getToken(parse_file_t * in)
 {
   FILE *fp = in->fp;
   char car, car1;
@@ -555,23 +1154,18 @@ char *getToken(parse_file * in)
     case EOF:
       in->type = ENDFILE;
       break;
-    case ',':
-      in->type = COMA;
+    case '/':
+      in->type = FORWARDSLASH;
       in->buffer[pos] = car;
       pos++;
       break;
-    case '(':
-      in->type = LPARENTHESIS;
+    case '<':
+      in->type = LANGLEBRACKET;
       in->buffer[pos] = car;
       pos++;
       break;
-    case ')':
-      in->type = RPARENTHESIS;
-      in->buffer[pos] = car;
-      pos++;
-      break;
-    case ';':
-      in->type = SEMICOLON;
+    case '>':
+      in->type = RANGLEBRACKET;
       in->buffer[pos] = car;
       pos++;
       break;
@@ -618,11 +1212,11 @@ char *getToken(parse_file * in)
         if(pos == BUFFER_SIZE) in->error(in, "number token too large");
         in->type = NUMBER;
       }    
-      else if(isalpha(car)) {
+      else if(isalnum(car) || car == '_' || car == '-') {
         in->buffer[0] = car;
         pos = 1;
         while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) {
-          if(!isalnum(car)) {
+          if(!(isalnum(car) || car == '_' || car == '-')) {
             ungetc(car,fp);
             break;
           }
@@ -639,7 +1233,7 @@ char *getToken(parse_file * in)
   return in->buffer;
 }
 
-void skipComment(parse_file * in)
+void skipComment(parse_file_t * in)
 {
   char car;
   while((car = getc(in->fp)) != EOF) {
@@ -654,7 +1248,7 @@ void skipComment(parse_file * in)
   if(car == EOF) in->error(in,"comment begining with '/*' has no ending '*/'");
 }
 
-void skipEOL(parse_file * in)
+void skipEOL(parse_file_t * in)
 {
   char car;
   while((car = getc(in->fp)) != EOF) {
@@ -666,36 +1260,22 @@ void skipEOL(parse_file * in)
   if(car == EOF)ungetc(car, in->fp);
 }
 
-int isalpha(char c)
-{
-  int i,j;
-  if(c == '_')return 1;
-  i = c - 'a';
-  j = c - 'A';
-  if((i>=0 && i<26) || (j>=0 && j<26)) return 1;
-  return 0;
-}
-
-int isalnum(char c)
-{
-  return (isalpha(c) || isdigit(c));
-}
-
 /*****************************************************************************
  *Function name
  *    checkNamedTypesImplemented : check if all named types have definition
  ****************************************************************************/
 
-void checkNamedTypesImplemented(table * named_types)
+void checkNamedTypesImplemented(table_t * named_types)
 {
-  type_descriptor *t;
+  type_descriptor_t *t;
   int pos;
   char str[256];
 
   for(pos = 0 ; pos < named_types->values.position; pos++) {
-    t = (type_descriptor *) named_types->values.array[pos];
+    t = (type_descriptor_t *) named_types->values.array[pos];
     if(t->type == NONE){
-      sprintf(str,"named type '%s' has no definition",(char*)named_types->keys.array[pos]);
+      sprintf(str,"named type '%s' has no definition",
+          (char*)named_types->keys.array[pos]);
       error_callback(NULL,str);   
     }
   }
@@ -711,25 +1291,23 @@ void checkNamedTypesImplemented(table * named_types)
  *    checksum          : checksum for the facility
  ****************************************************************************/
 
-void generateChecksum( char* facName, unsigned long * checksum, sequence * events)
+void generateChecksum(char* facName,
+    unsigned int * checksum, sequence_t * events)
 {
   unsigned long crc ;
-  int pos, nestedStruct;
-  event * ev;
-  char str[256];
+  int pos;
+  event_t * ev;
+  unsigned int i;
 
   crc = crc32(facName);
   for(pos = 0; pos < events->position; pos++){
-    ev = (event *)(events->array[pos]);
-    ev->nested = 0; //by default, event has no nested struct
-    crc = partial_crc32(ev->name,crc);    
-    nestedStruct = 0;
-    if(ev->type->type != STRUCT){
-      sprintf(str,"event '%s' has a type other than STRUCT",ev->name);
-      error_callback(NULL, str);
-    }
-    crc = getTypeChecksum(crc, ev->type,&nestedStruct);
-    if(nestedStruct ) ev->nested = 1;
+    ev = (event_t *)(events->array[pos]);
+    crc = partial_crc32(ev->name, crc);
+		for(i = 0; i < ev->fields.position; i++) {
+			field_t *f = (field_t*)ev->fields.array[i];
+      crc = partial_crc32(f->name, crc);
+      crc = getTypeChecksum(crc, f->type);
+		}
   }
   *checksum = crc;
 }
@@ -744,47 +1322,97 @@ void generateChecksum( char* facName, unsigned long * checksum, sequence * event
  *    unsigned long     : checksum 
  *****************************************************************************/
 
-unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type,
-			      int * nestedStruct)
+unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor_t * type)
 {
   unsigned long crc = aCrc;
   char * str = NULL, buf[16];
-  int flag = 0, pos, max, min;
-  field * fld;
-  data_type dt;
+  int flag = 0, pos;
+  field_t * fld;
 
   switch(type->type){
+    case INT_FIXED:
+      str = intOutputTypes[getSizeindex(type->size)];
+      break;
+    case UINT_FIXED:
+      str = uintOutputTypes[getSizeindex(type->size)];
+      break;
+    case POINTER:
+      str = allocAndCopy("void *");
+			flag = 1;
+      break;
+    case CHAR:
+      str = allocAndCopy("signed char");
+			flag = 1;
+      break;
+    case UCHAR:
+      str = allocAndCopy("unsigned char");
+			flag = 1;
+      break;
+    case SHORT:
+      str = allocAndCopy("short");
+			flag = 1;
+      break;
+    case USHORT:
+      str = allocAndCopy("unsigned short");
+			flag = 1;
+      break;
     case INT:
-      str = intOutputTypes[type->size];
+      str = allocAndCopy("int");
+			flag = 1;
       break;
     case UINT:
-      str = uintOutputTypes[type->size];
+      str = allocAndCopy("uint");
+			flag = 1;
+      break;
+    case LONG:
+      str = allocAndCopy("long");
+			flag = 1;
+      break;
+    case ULONG:
+      str = allocAndCopy("unsigned long");
+			flag = 1;
+      break;
+    case SIZE_T:
+      str = allocAndCopy("size_t");
+			flag = 1;
+      break;
+    case SSIZE_T:
+      str = allocAndCopy("ssize_t");
+			flag = 1;
+      break;
+    case OFF_T:
+      str = allocAndCopy("off_t");
+			flag = 1;
       break;
     case FLOAT:
-      str = floatOutputTypes[type->size];
+      str = floatOutputTypes[getSizeindex(type->size)];
       break;
     case STRING:
       str = allocAndCopy("string");
       flag = 1;
       break;
     case ENUM:
-      str = appendString("enum ", uintOutputTypes[type->size]);
+      //str = appendString("enum ", uintOutputTypes[getSizeindex(type->size)]);
+      str = allocAndCopy("enum");
       flag = 1;
       break;
     case ARRAY:
-      sprintf(buf,"%d\0",type->size);
+      sprintf(buf,"%zu", type->size);
       str = appendString("array ",buf);
       flag = 1;
       break;
     case SEQUENCE:
-      sprintf(buf,"%d\0",type->size);
-      str = appendString("sequence ",buf);
+      str = allocAndCopy("sequence ");
       flag = 1;
       break;
     case STRUCT:
       str = allocAndCopy("struct");
       flag = 1;
       break;
+    case UNION:
+      str = allocAndCopy("union");
+      flag = 1;
+      break;
     default:
       error_callback(NULL, "named type has no definition");
       break;
@@ -795,26 +1423,20 @@ unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type,
 
   if(type->fmt) crc = partial_crc32(type->fmt,crc);
     
-  if(type->type == ARRAY || type->type == SEQUENCE){
-    dt = type->nested_type->type;
-    if(dt == ARRAY || dt == SEQUENCE || dt == STRUCT) *nestedStruct += 1;
-    crc = getTypeChecksum(crc,type->nested_type,nestedStruct);
-  }else if(type->type == STRUCT){
-    if(type->fields.position != 0){//not a empty struct
-      max = 0;      
-      for(pos =0; pos < type->fields.position; pos++){
-	min = 0;
-	fld = (field *) type->fields.array[pos];
-	crc = partial_crc32(fld->name,crc);
-	if(fld->type->type == STRUCT) min++;
-	crc = getTypeChecksum(crc, fld->type,&min);
-	if(min>max) max = min;
-      }
-      *nestedStruct += max;
-    }
+  if(type->type == ARRAY){
+    crc = getTypeChecksum(crc,((field_t*)type->fields.array[0])->type);
+  } else if(type->type ==SEQUENCE) {
+    crc = getTypeChecksum(crc,((field_t*)type->fields.array[0])->type);
+    crc = getTypeChecksum(crc,((field_t*)type->fields.array[1])->type);
+	} else if(type->type == STRUCT || type->type == UNION){
+    for(pos =0; pos < type->fields.position; pos++){
+      fld = (field_t *) type->fields.array[pos];
+      crc = partial_crc32(fld->name,crc);
+      crc = getTypeChecksum(crc, fld->type);
+    }    
   }else if(type->type == ENUM){
     for(pos = 0; pos < type->labels.position; pos++)
-      crc = partial_crc32((char*)type->labels.array[pos],crc);    
+      crc = partial_crc32((char*)type->labels.array[pos],crc);
   }
 
   return crc;
@@ -822,10 +1444,10 @@ unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type,
 
 
 /* Event type descriptors */
-void freeType(type_descriptor * tp)
+void freeType(type_descriptor_t * tp)
 {
   int pos2;
-  field *f;
+  field_t *f;
 
   if(tp->fmt != NULL) free(tp->fmt);
   if(tp->type == ENUM) {
@@ -833,10 +1455,14 @@ void freeType(type_descriptor * tp)
       free(tp->labels.array[pos2]);
     }
     sequence_dispose(&(tp->labels));
+    for(pos2 = 0; pos2 < tp->labels_values.position; pos2++) {
+      free(tp->labels_values.array[pos2]);
+    }
+    sequence_dispose(&(tp->labels_values));
   }
   if(tp->type == STRUCT) {
     for(pos2 = 0; pos2 < tp->fields.position; pos2++) {
-      f = (field *) tp->fields.array[pos2];
+      f = (field_t *) tp->fields.array[pos2];
       free(f->name);
       free(f->description);
       free(f);
@@ -845,41 +1471,41 @@ void freeType(type_descriptor * tp)
   }
 }
 
-void freeNamedType(table * t)
+void freeNamedType(table_t * t)
 {
   int pos;
-  type_descriptor * td;
+  type_descriptor_t * td;
 
   for(pos = 0 ; pos < t->keys.position; pos++) {
     free((char *)t->keys.array[pos]);
-    td = (type_descriptor*)t->values.array[pos];
+    td = (type_descriptor_t*)t->values.array[pos];
     freeType(td);
     free(td);
   }
 }
 
-void freeTypes(sequence *t) 
+void freeTypes(sequence_t *t) 
 {
-  int pos, pos2;
-  type_descriptor *tp;
-  field *f;
+  int pos;
+  type_descriptor_t *tp;
 
   for(pos = 0 ; pos < t->position; pos++) {
-    tp = (type_descriptor *)t->array[pos];
+    tp = (type_descriptor_t *)t->array[pos];
     freeType(tp);
     free(tp);
   }
 }
 
-void freeEvents(sequence *t) 
+void freeEvents(sequence_t *t) 
 {
   int pos;
-  event *ev;
+  event_t *ev;
 
   for(pos = 0 ; pos < t->position; pos++) {
-    ev = (event *) t->array[pos];
+    ev = (event_t *) t->array[pos];
     free(ev->name);
     free(ev->description);
+		sequence_dispose(&ev->fields);
     free(ev);
   }
 
@@ -888,21 +1514,21 @@ void freeEvents(sequence *t)
 
 /* Extensible array */
 
-void sequence_init(sequence *t) 
+void sequence_init(sequence_t *t) 
 {
   t->size = 10;
   t->position = 0;
   t->array = (void **)memAlloc(t->size * sizeof(void *));
 }
 
-void sequence_dispose(sequence *t) 
+void sequence_dispose(sequence_t *t) 
 {
   t->size = 0;
   free(t->array);
   t->array = NULL;
 }
 
-void sequence_push(sequence *t, void *elem) 
+void sequence_push(sequence_t *t, void *elem) 
 {
   void **tmp;
 
@@ -917,33 +1543,34 @@ void sequence_push(sequence *t, void *elem)
   t->position++;
 }
 
-void *sequence_pop(sequence *t) 
+void *sequence_pop(sequence_t *t) 
 {
-  return t->array[t->position--];
+	if(t->position == 0) printf("Error : trying to pop an empty sequence");
+  return t->array[--t->position];
 }
 
 
 /* Hash table API, implementation is just linear search for now */
 
-void table_init(table *t) 
+void table_init(table_t *t) 
 {
   sequence_init(&(t->keys));
   sequence_init(&(t->values));
 }
 
-void table_dispose(table *t) 
+void table_dispose(table_t *t) 
 {
   sequence_dispose(&(t->keys));
   sequence_dispose(&(t->values));
 }
 
-void table_insert(table *t, char *key, void *value) 
+void table_insert(table_t *t, char *key, void *value) 
 {
   sequence_push(&(t->keys),key);
   sequence_push(&(t->values),value);
 }
 
-void *table_find(table *t, char *key) 
+void *table_find(table_t *t, char *key) 
 {
   int pos;
   for(pos = 0 ; pos < t->keys.position; pos++) {
@@ -953,13 +1580,13 @@ void *table_find(table *t, char *key)
   return NULL;
 }
 
-void table_insert_int(table *t, int *key, void *value)
+void table_insert_int(table_t *t, int *key, void *value)
 {
   sequence_push(&(t->keys),key);
   sequence_push(&(t->values),value);
 }
 
-void *table_find_int(table *t, int *key)
+void *table_find_int(table_t *t, int *key)
 {
   int pos;
   for(pos = 0 ; pos < t->keys.position; pos++) {
@@ -975,11 +1602,10 @@ void *table_find_int(table *t, int *key)
 char *appendString(char *s, char *suffix) 
 {
   char *tmp;
+  if(suffix == NULL) return s;
 
   tmp = (char *)memAlloc(strlen(s) + strlen(suffix) + 1);
   strcpy(tmp,s);
   strcat(tmp,suffix);  
   return tmp;
 }
-
-