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/* $Id: enum.c,v 2.0.1.1 1993/08/31 05:07:21 greyham Exp $
* enumerator operations
*/
#include "c2man.h"
#include "strconcat.h"
#include "enum.h"
#include "manpage.h"
SymbolTable *enum_table; /* enum symbol table */
/* we have to keep a list of EnumeratorLists because:
* - unnamed EnumeratorLists can't go in the symbol table.
* - a single EnumeratorList can be typedef'ed or enum'ed to more than one
* symbol, in which case it is referenced from the typedef_table or
* enum_table repectively more than once.
*/
EnumeratorList *first_list = NULL, **last_next_list = &first_list;
/* Initialize a list of enumerators.*/
EnumeratorList *
new_enumerator_list (enumerator)
Enumerator *enumerator;
{
Enumerator *p;
EnumeratorList *list;
list = (EnumeratorList *)safe_malloc(sizeof *list);
*last_next_list = list;
last_next_list = &list->next;
list->next = NULL;
p = (Enumerator *)safe_malloc(sizeof(Enumerator));
*p = *enumerator;
list->first = list->last = p;
p->next = NULL;
return list;
}
/* Add the enumerator to the list. */
void
add_enumerator_list (list, enumerator)
EnumeratorList *list;
Enumerator *enumerator;
{
Enumerator *p;
p = (Enumerator *)safe_malloc((unsigned)sizeof(Enumerator));
*p = *enumerator;
list->last->next = p;
list->last = p;
p->next = NULL;
}
/* Free storage used by the elements in the enumerator list. */
void
free_enumerator_list (enumerator_list)
EnumeratorList *enumerator_list;
{
Enumerator *p, *next;
p = enumerator_list->first;
while (p != NULL) {
next = p->next;
free_enumerator(p);
free(p);
p = next;
}
}
void
new_enumerator(e, name, comment_before, comment_after)
Enumerator *e;
char *name;
char *comment_before;
char *comment_after;
{
e-> name = name;
e-> comment = comment_after ? comment_after : comment_before;
e-> group_comment = comment_before && comment_after ? comment_before : NULL;
}
/* Free the storage used by the enumerator.*/
void
free_enumerator (param)
Enumerator *param;
{
free(param->name);
safe_free(param->comment);
safe_free(param->group_comment);
}
/* add a comment to the last enumerator in the list */
int
comment_last_enumerator(list, comment)
EnumeratorList *list;
char *comment;
{
if (list->last->comment)
{
if (list->last->group_comment)
{
enumerator_error(list->last->name);
free(comment);
return 0;
}
list->last->group_comment = list->last->comment;
}
list->last->comment = comment;
return 1;
}
/* enum namespace management */
void add_enum_symbol(name, enum_list)
char *name;
EnumeratorList *enum_list;
{
Symbol *entry = new_symbol(enum_table, name, DS_NONE);
if (entry)
{
entry->value.enum_list = enum_list;
entry->valtype = SYMVAL_ENUM;
}
}
/* look for the Enumerator list associated with the symbol */
EnumeratorList *find_enum_symbol(name)
char *name;
{
Symbol *entry = find_symbol(enum_table, name);
if (entry)
return entry->value.enum_list;
else
return NULL;
}
void destroy_enum_lists()
{
EnumeratorList *list, *next;
/* free all the enumerator lists */
for (list = first_list; list; list = next)
{
next = list->next;
free_enumerator_list(list);
free(list);
}
}
/* create new typedef symbols */
void new_typedef_symbols(decl_spec, decl_list)
DeclSpec *decl_spec;
DeclaratorList *decl_list;
{
Declarator *d;
for (d = decl_list->first; d; d = d-> next)
{
Symbol *s = new_symbol(typedef_names, d->name, DS_NONE);
if (s && decl_spec->enum_list)
{
s->value.enum_list = decl_spec->enum_list;
s->valtype = SYMVAL_ENUM;
}
}
}
void enumerator_error(name)
char *name;
{
yyerror("enumerator '%s' has multiple comments", name);
}
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