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view lwcc/cpp.c @ 504:16bd8effb2f6
Update lwcc driver to actually do something useful sometimes
Make lwcc driver actually find the correct filenames for the preprocessor
and compiler.
Construct the preprocessor argument list correctly instead of assigning all
arguments to argv[0], including the trailing NULL argument.
Instruct lwasm to use the object file format.
Correct state setting for -S and -c options so they stop after the correct
phases of compilation.
author | William Astle <lost@l-w.ca> |
---|---|
date | Thu, 24 Oct 2019 22:41:04 -0600 |
parents | 670ea8f90212 |
children |
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/* lwcc/cpp.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 <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <lw_alloc.h> #include <lw_string.h> #include <lw_stringlist.h> #include <lw_strpool.h> #include "cpp.h" struct token *preproc_lex_next_token(struct preproc_info *); struct preproc_info *preproc_init(const char *fn) { FILE *fp; struct preproc_info *pp; if (!fn || (fn[0] == '-' && fn[1] == '0')) { fp = stdin; } else { fp = fopen(fn, "rb"); } if (!fp) return NULL; pp = lw_alloc(sizeof(struct preproc_info)); memset(pp, 0, sizeof(struct preproc_info)); pp -> strpool = lw_strpool_create(); pp -> fn = lw_strpool_strdup(pp -> strpool, fn); pp -> fp = fp; pp -> ra = CPP_NOUNG; pp -> unget = CPP_NOUNG; pp -> ppeolseen = 1; pp -> lineno = 1; pp -> n = NULL; pp -> quotelist = lw_stringlist_create(); pp -> inclist = lw_stringlist_create(); return pp; } void preproc_add_include(struct preproc_info *pp, char *dir, int sys) { if (sys) lw_stringlist_addstring(pp -> inclist, dir); else lw_stringlist_addstring(pp -> quotelist, dir); } struct token *preproc_next_token(struct preproc_info *pp) { struct token *t; if (pp -> curtok) token_free(pp -> curtok); /* If there is a list of tokens to process, move it to the "unget" queue with an EOF marker at the end of it. */ if (pp -> sourcelist) { for (t = pp -> sourcelist; t -> next; t = t -> next) /* do nothing */ ; t -> next = token_create(TOK_EOF, NULL, -1, -1, ""); t -> next -> next = pp -> tokqueue; pp -> tokqueue = pp -> sourcelist; pp -> sourcelist = NULL; } again: if (pp -> tokqueue) { t = pp -> tokqueue; pp -> tokqueue = t -> next; if (pp -> tokqueue) pp -> tokqueue -> prev = NULL; t -> next = NULL; t -> prev = NULL; pp -> curtok = t; goto ret; } pp -> curtok = preproc_lex_next_token(pp); t = pp -> curtok; ret: if (t -> ttype == TOK_ENDEXPAND) { struct expand_e *e; e = pp -> expand_list; pp -> expand_list = e -> next; lw_free(e); goto again; } return t; } void preproc_unget_token(struct preproc_info *pp, struct token *t) { t -> next = pp -> tokqueue; pp -> tokqueue = t; if (pp -> curtok == t) pp -> curtok = NULL; } void preproc_finish(struct preproc_info *pp) { fclose(pp -> fp); lw_stringlist_destroy(pp -> inclist); lw_stringlist_destroy(pp -> quotelist); if (pp -> curtok) token_free(pp -> curtok); while (pp -> tokqueue) { preproc_next_token(pp); token_free(pp -> curtok); } lw_strpool_free(pp -> strpool); lw_free(pp); } void preproc_register_error_callback(struct preproc_info *pp, void (*cb)(const char *)) { pp -> errorcb = cb; } void preproc_register_warning_callback(struct preproc_info *pp, void (*cb)(const char *)) { pp -> warningcb = cb; } static void preproc_throw_error_default(const char *m) { fprintf(stderr, "ERROR: %s\n", m); } static void preproc_throw_warning_default(const char *m) { fprintf(stderr, "WARNING: %s\n", m); } static void preproc_throw_message(struct preproc_info *pp, void (*cb)(const char *), const char *m, va_list args) { int s, s2; char *b; s2 = snprintf(NULL, 0, "(%s:%d:%d) ", pp -> fn, pp -> lineno, pp -> column); s = vsnprintf(NULL, 0, m, args); b = lw_alloc(s + s2 + 1); snprintf(b, s2 + 1, "(%s:%d:%d) ", pp -> fn, pp -> lineno, pp -> column); vsnprintf(b + s2, s + 1, m, args); (*cb)(b); lw_free(b); } void preproc_throw_error(struct preproc_info *pp, const char *m, ...) { va_list args; va_start(args, m); preproc_throw_message(pp, pp -> errorcb ? pp -> errorcb : preproc_throw_error_default, m, args); va_end(args); exit(1); } void preproc_throw_warning(struct preproc_info *pp, const char *m, ...) { va_list args; va_start(args, m); preproc_throw_message(pp, pp -> warningcb ? pp -> warningcb : preproc_throw_warning_default, m, args); va_end(args); }