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Checkpoint parser development for lwcc
Beginning of lemon based parser for C including all the infrastructure for
calling the lemon generated parser. This requires a translation layer from
the preprocessor token numbers to the lemon parser token numbers due to the
fact that lemon wants to control the token numbers. Eventually when the
lemon parser gets replaced with a hand crafted recursive descent parser,
this translation will no longer be required. However, in the interest of
getting things working sooner rather than later, using something like lemon
is beneficial.
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Sun, 17 Nov 2013 11:59:36 -0700 |
| parents | 670ea8f90212 |
| children |
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/* lwcc/cpp.h 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/>. */ #ifndef cpp_h_seen___ #define cpp_h_seen___ #include <stdio.h> #include <lw_stringlist.h> //#include "symbol.h" #include "token.h" #define TOKBUFSIZE 32 struct expand_e { struct expand_e *next; struct symtab_e *s; // symbol table entry of the expanding symbol }; struct preproc_info { const char *fn; FILE *fp; struct token *tokqueue; struct token *curtok; void (*errorcb)(const char *); void (*warningcb)(const char *); int eolstate; // internal for use in handling newlines int lineno; // the current input line number int column; // the current input column int trigraphs; // nonzero if we're going to handle trigraphs int ra; int qseen; int ungetbufl; int ungetbufs; int *ungetbuf; int unget; int eolseen; int nlseen; int ppeolseen; // nonzero if we've seen only whitespace (or nothing) since a newline int skip_level; // nonzero if we're in a false conditional int found_level; // nonzero if we're in a true conditional int else_level; // for counting #else directives int else_skip_level; // ditto struct symtab_e *sh; // the preprocessor's symbol table struct token *sourcelist; // for expanding a list of tokens struct expand_e *expand_list; // record of which macros are currently being expanded char *lexstr; // for lexing a string (token pasting) int lexstrloc; // ditto struct preproc_info *n; // next in file stack struct preproc_info *filestack; // stack of saved files during include struct lw_strpool *strpool; lw_stringlist_t quotelist; lw_stringlist_t inclist; }; extern struct preproc_info *preproc_init(const char *); extern struct token *preproc_next_token(struct preproc_info *); extern struct token *preproc_next_processed_token(struct preproc_info *); extern void preproc_finish(struct preproc_info *); extern void preproc_register_error_callback(struct preproc_info *, void (*)(const char *)); extern void preproc_register_warning_callback(struct preproc_info *, void (*)(const char *)); extern void preproc_throw_error(struct preproc_info *, const char *, ...); extern void preproc_throw_warning(struct preproc_info *, const char *, ...); extern void preproc_unget_token(struct preproc_info *, struct token *); extern void preproc_add_include(struct preproc_info *, char *, int); extern void preproc_add_macro(struct preproc_info *, char *); extern struct token *preproc_next(struct preproc_info *); #endif // cpp_h_seen___