Mercurial > hg > index.cgi
view lwcc/symbol.c @ 299:856caf91ffaa ccdev
Added token list structure and switched some stuff to use it
Swithced to using a token list structure instead of manually fiddling
pointers throughout the macro expansion code. Also fixed up some problematic
things related to stringification and concatenation.
author | William Astle <lost@l-w.ca> |
---|---|
date | Sun, 15 Sep 2013 13:06:00 -0600 |
parents | 83fcc1ed6ad6 |
children | 54f213c8fb81 |
line wrap: on
line source
/* 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; s = lw_alloc(sizeof(struct symtab_e)); s -> name = lw_strdup(name); s -> tl = def; s -> nargs = nargs; s -> params = params; s -> vargs = vargs; s -> next = pp -> sh; pp -> sh = s; }