1 /* Lists of symbols for Bison
3 Copyright (C) 2002, 2005-2007, 2009-2012 Free Software Foundation,
6 This file is part of Bison, the GNU Compiler Compiler.
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, either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 /*--------------------------------------.
29 | Create a list containing SYM at LOC. |
30 `--------------------------------------*/
33 symbol_list_sym_new (symbol *sym, location loc)
35 symbol_list *res = xmalloc (sizeof *res);
37 res->content_type = SYMLIST_SYMBOL;
38 res->content.sym = sym;
39 res->location = res->sym_loc = loc;
42 res->midrule_parent_rule = NULL;
43 res->midrule_parent_rhs_index = 0;
45 code_props_none_init (&res->action_props);
51 res->named_ref = NULL;
59 /*--------------------------------------------.
60 | Create a list containing TYPE_NAME at LOC. |
61 `--------------------------------------------*/
64 symbol_list_type_new (uniqstr type_name, location loc)
66 symbol_list *res = xmalloc (sizeof *res);
68 res->content_type = SYMLIST_TYPE;
69 res->content.type_name = type_name;
70 res->location = res->sym_loc = loc;
71 res->named_ref = NULL;
78 /*----------------------------------------.
79 | Create a list containing a <*> at LOC. |
80 `----------------------------------------*/
83 symbol_list_default_tagged_new (location loc)
85 symbol_list *res = xmalloc (sizeof *res);
87 res->content_type = SYMLIST_DEFAULT_TAGGED;
88 res->location = res->sym_loc = loc;
89 res->named_ref = NULL;
96 /*---------------------------------------.
97 | Create a list containing a <> at LOC. |
98 `---------------------------------------*/
101 symbol_list_default_tagless_new (location loc)
103 symbol_list *res = xmalloc (sizeof *res);
105 res->content_type = SYMLIST_DEFAULT_TAGLESS;
106 res->location = res->sym_loc = loc;
107 res->named_ref = NULL;
114 /*-----------------------------------------------------------------------.
115 | Print this list, for which every content_type must be SYMLIST_SYMBOL. |
116 `-----------------------------------------------------------------------*/
119 symbol_list_syms_print (const symbol_list *l, FILE *f)
121 for (/* Nothing. */; l && l->content.sym; l = l->next)
123 symbol_print (l->content.sym, f);
124 fprintf (stderr, l->action_props.is_value_used ? " used" : " unused");
125 if (l && l->content.sym)
131 /*---------------------------.
132 | Prepend NODE to the LIST. |
133 `---------------------------*/
136 symbol_list_prepend (symbol_list *list, symbol_list *node)
143 /*-----------------------------------------------.
144 | Free the LIST, but not the items it contains. |
145 `-----------------------------------------------*/
148 symbol_list_free (symbol_list *list)
150 symbol_list *node, *next;
151 for (node = list; node; node = next)
154 named_ref_free (node->named_ref);
160 /*--------------------.
161 | Return its length. |
162 `--------------------*/
165 symbol_list_length (symbol_list const *l)
169 l && !(l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL);
176 /*------------------------------.
177 | Get item N in symbol list L. |
178 `------------------------------*/
181 symbol_list_n_get (symbol_list *l, int n)
188 for (i = 0; i < n; ++i)
192 || (l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL))
200 /*--------------------------------------------------------------.
201 | Get the data type (alternative in the union) of the value for |
202 | symbol N in symbol list L. |
203 `--------------------------------------------------------------*/
206 symbol_list_n_type_name_get (symbol_list *l, location loc, int n)
208 l = symbol_list_n_get (l, n);
211 complain_at (loc, _("invalid $ value: $%d"), n);
214 aver (l->content_type == SYMLIST_SYMBOL);
215 return l->content.sym->type_name;
219 symbol_list_null (symbol_list *node)
222 (node->content_type == SYMLIST_SYMBOL && !(node->content.sym));
226 symbol_list_destructor_set (symbol_list *node, code_props const *destructor)
228 switch (node->content_type)
231 symbol_destructor_set (node->content.sym, destructor);
234 semantic_type_destructor_set (
235 semantic_type_get (node->content.type_name), destructor);
237 case SYMLIST_DEFAULT_TAGGED:
238 default_tagged_destructor_set (destructor);
240 case SYMLIST_DEFAULT_TAGLESS:
241 default_tagless_destructor_set (destructor);
247 symbol_list_printer_set (symbol_list *node, code_props const *printer)
249 switch (node->content_type)
252 symbol_printer_set (node->content.sym, printer);
255 semantic_type_printer_set (
256 semantic_type_get (node->content.type_name), printer);
258 case SYMLIST_DEFAULT_TAGGED:
259 default_tagged_printer_set (printer);
261 case SYMLIST_DEFAULT_TAGLESS:
262 default_tagless_printer_set (printer);