/* Lists of symbols for Bison
- Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2005-2007, 2009-2012 Free Software Foundation,
+ Inc.
This file is part of Bison, the GNU Compiler Compiler.
- Bison is free software; you can redistribute it and/or modify
+ 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; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- Bison is distributed in the hope that it will be useful,
+ 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.
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "system.h"
`--------------------------------------*/
symbol_list *
-symbol_list_new (symbol *sym, location loc)
+symbol_list_sym_new (symbol *sym, location loc)
{
symbol_list *res = xmalloc (sizeof *res);
- res->next = NULL;
- res->sym = sym;
- res->location = loc;
- res->action = NULL;
+
+ res->content_type = SYMLIST_SYMBOL;
+ res->content.sym = sym;
+ res->location = res->sym_loc = loc;
+
+ res->midrule = NULL;
+ res->midrule_parent_rule = NULL;
+ res->midrule_parent_rhs_index = 0;
+
+ code_props_none_init (&res->action_props);
+
res->ruleprec = NULL;
res->dprec = 0;
res->merger = 0;
+
+ res->named_ref = NULL;
+
+ 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 = res->sym_loc = loc;
+ res->named_ref = NULL;
+ res->next = NULL;
+
+ return res;
+}
+
+
+/*----------------------------------------.
+| Create a list containing a <*> at LOC. |
+`----------------------------------------*/
+
+symbol_list *
+symbol_list_default_tagged_new (location loc)
+{
+ symbol_list *res = xmalloc (sizeof *res);
+
+ res->content_type = SYMLIST_DEFAULT_TAGGED;
+ res->location = res->sym_loc = loc;
+ res->named_ref = NULL;
+ res->next = NULL;
+
return res;
}
-/*------------------.
-| Print this list. |
-`------------------*/
+/*---------------------------------------.
+| Create a list containing a <> at LOC. |
+`---------------------------------------*/
+
+symbol_list *
+symbol_list_default_tagless_new (location loc)
+{
+ symbol_list *res = xmalloc (sizeof *res);
+
+ res->content_type = SYMLIST_DEFAULT_TAGLESS;
+ res->location = res->sym_loc = loc;
+ res->named_ref = NULL;
+ res->next = NULL;
+
+ return res;
+}
+
+
+/*-----------------------------------------------------------------------.
+| Print this list, for which every content_type must be SYMLIST_SYMBOL. |
+`-----------------------------------------------------------------------*/
void
-symbol_list_print (symbol_list *l, FILE *f)
+symbol_list_syms_print (const symbol_list *l, FILE *f)
{
- for (/* Nothing. */; l && l->sym; l = l->next)
+ for (/* Nothing. */; l && l->content.sym; l = l->next)
{
- symbol_print (l->sym, f);
- if (l && l->sym)
- fputc (' ', f);
+ symbol_print (l->content.sym, f);
+ fprintf (stderr, l->action_props.is_value_used ? " used" : " unused");
+ if (l && l->content.sym)
+ fprintf (f, ", ");
}
}
-/*---------------------------------.
-| Prepend SYM at LOC to the LIST. |
-`---------------------------------*/
+/*---------------------------.
+| Prepend NODE to the LIST. |
+`---------------------------*/
symbol_list *
-symbol_list_prepend (symbol_list *list, symbol *sym, location loc)
+symbol_list_prepend (symbol_list *list, symbol_list *node)
{
- symbol_list *res = symbol_list_new (sym, loc);
- res->next = list;
- return res;
+ node->next = list;
+ return node;
}
-/*-------------------------------------------------.
-| Free the LIST, but not the symbols it contains. |
-`-------------------------------------------------*/
+/*-----------------------------------------------.
+| Free the LIST, but not the items it contains. |
+`-----------------------------------------------*/
void
symbol_list_free (symbol_list *list)
{
- LIST_FREE (symbol_list, list);
+ symbol_list *node, *next;
+ for (node = list; node; node = next)
+ {
+ next = node->next;
+ named_ref_free (node->named_ref);
+ free (node);
+ }
}
| Return its length. |
`--------------------*/
-unsigned int
-symbol_list_length (symbol_list *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 item N in symbol list L. |
+`------------------------------*/
+
+symbol_list *
+symbol_list_n_get (symbol_list *l, int n)
+{
+ int i;
+
+ if (n < 0)
+ return NULL;
+
+ for (i = 0; i < n; ++i)
+ {
+ 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 RP. |
+| symbol N in symbol list L. |
`--------------------------------------------------------------*/
uniqstr
-symbol_list_n_type_name_get (symbol_list *rp, location loc, int n)
+symbol_list_n_type_name_get (symbol_list *l, location loc, int n)
{
- int i;
-
- if (n < 0)
+ l = symbol_list_n_get (l, n);
+ if (!l)
{
complain_at (loc, _("invalid $ value: $%d"), n);
return NULL;
}
+ aver (l->content_type == SYMLIST_SYMBOL);
+ return l->content.sym->type_name;
+}
- i = 0;
+bool
+symbol_list_null (symbol_list *node)
+{
+ return !node ||
+ (node->content_type == SYMLIST_SYMBOL && !(node->content.sym));
+}
- while (i < n)
+void
+symbol_list_destructor_set (symbol_list *node, code_props const *destructor)
+{
+ switch (node->content_type)
{
- rp = rp->next;
- if (rp == NULL || rp->sym == NULL)
- {
- complain_at (loc, _("invalid $ value: $%d"), n);
- return NULL;
- }
- ++i;
+ case SYMLIST_SYMBOL:
+ symbol_destructor_set (node->content.sym, destructor);
+ break;
+ case SYMLIST_TYPE:
+ semantic_type_destructor_set (
+ semantic_type_get (node->content.type_name), destructor);
+ break;
+ case SYMLIST_DEFAULT_TAGGED:
+ default_tagged_destructor_set (destructor);
+ break;
+ case SYMLIST_DEFAULT_TAGLESS:
+ default_tagless_destructor_set (destructor);
+ break;
}
+}
- return rp->sym->type_name;
+void
+symbol_list_printer_set (symbol_list *node, code_props const *printer)
+{
+ switch (node->content_type)
+ {
+ case SYMLIST_SYMBOL:
+ symbol_printer_set (node->content.sym, printer);
+ break;
+ case SYMLIST_TYPE:
+ semantic_type_printer_set (
+ semantic_type_get (node->content.type_name), printer);
+ break;
+ case SYMLIST_DEFAULT_TAGGED:
+ default_tagged_printer_set (printer);
+ break;
+ case SYMLIST_DEFAULT_TAGLESS:
+ default_tagless_printer_set (printer);
+ break;
+ }
}
projects / bison.git / blobdiff