Mercurial > hg > index.cgi
diff lwcc/symbol.c @ 495:5b8871fd7503
Merged previous lwcc development branch into mainline.
author | William Astle <lost@l-w.ca> |
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date | Mon, 05 Aug 2019 21:27:09 -0600 |
parents | 54f213c8fb81 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lwcc/symbol.c Mon Aug 05 21:27:09 2019 -0600 @@ -0,0 +1,131 @@ +/* +lwcc/symbol.c + +Copyright © 2013 William Astle + +This file is part of LWTOOLS. + +LWTOOLS 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 3 of the License, or (at your option) any later +version. + +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 +this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <string.h> + +#include <lw_alloc.h> +#include <lw_string.h> + +#include "cpp.h" +#include "symbol.h" +#include "token.h" + +void symbol_free(struct symtab_e *s) +{ + int i; + + lw_free(s -> name); + + for (i = 0; i < s -> nargs; i++) + lw_free(s -> params[i]); + lw_free(s -> params); + token_list_destroy(s -> tl); +} + +struct symtab_e *symtab_find(struct preproc_info *pp, char *name) +{ + struct symtab_e *s; + + for (s = pp -> sh; s; s = s -> next) + { + if (strcmp(s -> name, name) == 0) + { + return s; + } + } + return NULL; +} + +void symtab_undef(struct preproc_info *pp, char *name) +{ + struct symtab_e *s, **p; + + p = &(pp -> sh); + for (s = pp -> sh; s; s = s -> next) + { + if (strcmp(s -> name, name) == 0) + { + (*p) -> next = s -> next; + symbol_free(s); + return; + } + p = &((*p) -> next); + } +} + +void symtab_define(struct preproc_info *pp, char *name, struct token_list *def, int nargs, char **params, int vargs) +{ + struct symtab_e *s; + int i; + + s = lw_alloc(sizeof(struct symtab_e)); + s -> name = lw_strdup(name); + s -> tl = def; + s -> nargs = nargs; + s -> params = NULL; + if (params) + { + s -> params = lw_alloc(sizeof(char *) * nargs); + for (i = 0; i < nargs; i++) + s -> params[i] = lw_strdup(params[i]); + } + s -> vargs = vargs; + s -> next = pp -> sh; + pp -> sh = s; +} + +void symtab_dump(struct preproc_info *pp) +{ + struct symtab_e *s; + struct token *t; + int i; + + for (s = pp -> sh; s; s = s -> next) + { + printf("%s", s -> name); + if (s -> nargs >= 0) + { + printf("("); + for (i = 0; i < s -> nargs; i++) + { + if (i) + printf(","); + printf("%s", s -> params[i]); + } + if (s -> vargs) + { + if (s -> nargs) + printf(","); + printf("..."); + } + printf(")"); + } + printf(" => "); + if (s -> tl) + { + for (t = s -> tl -> head; t; t = t -> next) + { + token_print(t, stdout); + } + } + printf("\n"); + } +}