/* Lists of symbols for Bison
- Copyright (C) 2002 Free Software Foundation, Inc.
+
+ Copyright (C) 2002, 2005, 2006 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
You should have received a copy of the GNU General Public License
along with Bison; see the file COPYING. If not, write to
- the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+#include <config.h>
#include "system.h"
+
#include "complain.h"
#include "symlist.h"
-/*----------------------------------------------.
-| Create a list containing SYMBOL at LOCATION. |
-`----------------------------------------------*/
+/*--------------------------------------.
+| Create a list containing SYM at LOC. |
+`--------------------------------------*/
-symbol_list_t *
-symbol_list_new (symbol_t *sym, location_t location)
+symbol_list *
+symbol_list_sym_new (symbol *sym, location loc)
{
- symbol_list_t *res = XMALLOC (symbol_list_t, 1);
- res->next = NULL;
- res->sym = sym;
- res->location = location;
+ symbol_list *res = xmalloc (sizeof *res);
+
+ res->content_type = SYMLIST_SYMBOL;
+ res->content.sym = sym;
+ res->location = loc;
+
+ res->midrule = NULL;
+ res->midrule_parent_rule = NULL;
+ res->midrule_parent_rhs_index = 0;
+
res->action = NULL;
+ res->used = false;
+
res->ruleprec = NULL;
res->dprec = 0;
res->merger = 0;
+
+ res->next = NULL;
+
+ return res;
+}
+
+
+/*--------------------------------------------.
+| Create a list containing TYPE_NAME at LOC. |
+`--------------------------------------------*/
+
+symbol_list *
+symbol_list_type_new (uniqstr type_name, location loc)
+{
+ symbol_list *res = xmalloc (sizeof *res);
+
+ res->content_type = SYMLIST_TYPE;
+ res->content.type_name = type_name;
+ res->location = loc;
+ res->next = NULL;
+
return res;
}
-/*-----------------------------------------.
-| Prepend SYMBOL at LOCATION to the LIST. |
-`-----------------------------------------*/
+/*----------------------------------------------------.
+| Create a list containing a %symbol-default at LOC. |
+`----------------------------------------------------*/
-symbol_list_t *
-symbol_list_prepend (symbol_list_t *list,
- symbol_t *symbol, location_t location)
+symbol_list *
+symbol_list_default_new (location loc)
{
- symbol_list_t *res = symbol_list_new (symbol, location);
- res->next = list;
+ symbol_list *res = xmalloc (sizeof *res);
+
+ res->content_type = SYMLIST_DEFAULT;
+ res->location = loc;
+ res->next = NULL;
+
return res;
}
-/*-------------------------------------------------.
-| Free the LIST, but not the symbols it contains. |
-`-------------------------------------------------*/
+/*-----------------------------------------------------------------------.
+| Print this list, for which every content_type must be SYMLIST_SYMBOL. |
+`-----------------------------------------------------------------------*/
void
-symbol_list_free (symbol_list_t *list)
+symbol_list_syms_print (const symbol_list *l, FILE *f)
+{
+ for (/* Nothing. */; l && l->content.sym; l = l->next)
+ {
+ symbol_print (l->content.sym, f);
+ fprintf (stderr, l->used ? " used" : " unused");
+ if (l && l->content.sym)
+ fprintf (f, ", ");
+ }
+}
+
+
+/*---------------------------.
+| Prepend NODE to the LIST. |
+`---------------------------*/
+
+symbol_list *
+symbol_list_prepend (symbol_list *list, symbol_list *node)
{
- LIST_FREE (symbol_list_t, list);
+ node->next = list;
+ return node;
+}
+
+
+/*-----------------------------------------------.
+| Free the LIST, but not the items it contains. |
+`-----------------------------------------------*/
+
+void
+symbol_list_free (symbol_list *list)
+{
+ LIST_FREE (symbol_list, list);
}
| Return its length. |
`--------------------*/
-unsigned int
-symbol_list_length (symbol_list_t *list)
+int
+symbol_list_length (symbol_list const *l)
{
int res = 0;
- for (/* Nothing. */; list; list = list->next)
+ for (/* Nothing. */;
+ l && !(l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL);
+ l = l->next)
++res;
return res;
}
-/*--------------------------------------------------------------.
-| Get the data type (alternative in the union) of the value for |
-| symbol N in rule RULE. |
-`--------------------------------------------------------------*/
+/*------------------------------.
+| Get item N in symbol list L. |
+`------------------------------*/
-char *
-symbol_list_n_type_name_get (symbol_list_t *rule, location_t location, int n)
+symbol_list *
+symbol_list_n_get (symbol_list *l, int n)
{
int i;
- symbol_list_t *rp;
if (n < 0)
+ return NULL;
+
+ for (i = 0; i < n; ++i)
{
- complain_at (location, _("invalid $ value"));
+ l = l->next;
+ if (l == NULL
+ || (l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL))
+ return NULL;
+ }
+
+ return l;
+}
+
+
+/*--------------------------------------------------------------.
+| Get the data type (alternative in the union) of the value for |
+| symbol N in symbol list L. |
+`--------------------------------------------------------------*/
+
+uniqstr
+symbol_list_n_type_name_get (symbol_list *l, location loc, int n)
+{
+ l = symbol_list_n_get (l, n);
+ if (!l)
+ {
+ complain_at (loc, _("invalid $ value: $%d"), n);
return NULL;
}
+ assert (l->content_type == SYMLIST_SYMBOL);
+ return l->content.sym->type_name;
+}
+
- rp = rule;
- i = 0;
+/*--------------------------------------.
+| The item N in symbol list L is USED. |
+`--------------------------------------*/
+
+void
+symbol_list_n_used_set (symbol_list *l, int n, bool used)
+{
+ l = symbol_list_n_get (l, n);
+ if (l)
+ l->used = used;
+}
- while (i < n)
+void
+symbol_list_destructor_set (symbol_list *node, const char *destructor,
+ location loc)
+{
+ switch (node->content_type)
{
- rp = rp->next;
- if (rp == NULL || rp->sym == NULL)
- {
- complain_at (location, _("invalid $ value"));
- return NULL;
- }
- ++i;
+ case SYMLIST_SYMBOL:
+ symbol_destructor_set (node->content.sym, destructor, loc);
+ break;
+ case SYMLIST_TYPE:
+ /* FIXME: */
+ break;
+ case SYMLIST_DEFAULT:
+ default_destructor_set (destructor, loc);
+ break;
}
+}
- return rp->sym->type_name;
+void
+symbol_list_printer_set (symbol_list *node, const char *printer, location loc)
+{
+ switch (node->content_type)
+ {
+ case SYMLIST_SYMBOL:
+ symbol_printer_set (node->content.sym, printer, loc);
+ break;
+ case SYMLIST_TYPE:
+ /* FIXME: */
+ break;
+ case SYMLIST_DEFAULT:
+ default_printer_set (printer, loc);
+ break;
+ }
}
projects / bison.git / blobdiff