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annotate lwcc/cpp.h @ 561:a6a9d46f071f
Make ifdef and ifndef complain if they aren't given a symbol
If makes no sense to test "nothing" for definedness. If no symbol is
provided to ifdef or ifndef, complain about a bad operand.
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Thu, 30 Nov 2023 16:54:12 -0700 |
| parents | 670ea8f90212 |
| children |
| rev | line source |
|---|---|
| 295 | 1 /* |
| 2 lwcc/cpp.h | |
| 3 | |
| 4 Copyright © 2013 William Astle | |
| 5 | |
| 6 This file is part of LWTOOLS. | |
| 7 | |
| 8 LWTOOLS is free software: you can redistribute it and/or modify it under the | |
| 9 terms of the GNU General Public License as published by the Free Software | |
| 10 Foundation, either version 3 of the License, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 16 more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License along with | |
| 19 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 */ | |
| 21 | |
| 22 #ifndef cpp_h_seen___ | |
| 23 #define cpp_h_seen___ | |
| 24 | |
| 25 #include <stdio.h> | |
| 26 | |
|
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b08787e5b9f3
Add include search paths and command line macro definitions
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parents:
304
diff
changeset
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27 #include <lw_stringlist.h> |
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b08787e5b9f3
Add include search paths and command line macro definitions
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parents:
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diff
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28 |
| 296 | 29 //#include "symbol.h" |
| 295 | 30 #include "token.h" |
| 31 | |
| 32 #define TOKBUFSIZE 32 | |
| 33 | |
| 296 | 34 struct expand_e |
| 35 { | |
| 36 struct expand_e *next; | |
| 37 struct symtab_e *s; // symbol table entry of the expanding symbol | |
| 38 }; | |
| 39 | |
| 295 | 40 struct preproc_info |
| 41 { | |
| 42 const char *fn; | |
| 43 FILE *fp; | |
| 44 struct token *tokqueue; | |
| 296 | 45 struct token *curtok; |
| 295 | 46 void (*errorcb)(const char *); |
| 47 void (*warningcb)(const char *); | |
| 296 | 48 int eolstate; // internal for use in handling newlines |
| 49 int lineno; // the current input line number | |
| 50 int column; // the current input column | |
| 51 int trigraphs; // nonzero if we're going to handle trigraphs | |
| 295 | 52 int ra; |
| 53 int qseen; | |
| 54 int ungetbufl; | |
| 55 int ungetbufs; | |
| 56 int *ungetbuf; | |
| 57 int unget; | |
| 58 int eolseen; | |
| 59 int nlseen; | |
| 296 | 60 int ppeolseen; // nonzero if we've seen only whitespace (or nothing) since a newline |
| 61 int skip_level; // nonzero if we're in a false conditional | |
| 62 int found_level; // nonzero if we're in a true conditional | |
| 63 int else_level; // for counting #else directives | |
| 64 int else_skip_level; // ditto | |
| 65 struct symtab_e *sh; // the preprocessor's symbol table | |
| 66 struct token *sourcelist; // for expanding a list of tokens | |
| 67 struct expand_e *expand_list; // record of which macros are currently being expanded | |
|
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6112c67728ba
Add stringification and token concatenation
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68 char *lexstr; // for lexing a string (token pasting) |
|
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69 int lexstrloc; // ditto |
| 300 | 70 struct preproc_info *n; // next in file stack |
| 71 struct preproc_info *filestack; // stack of saved files during include | |
|
308
670ea8f90212
Converted preproc logic to library and moved some utility stuff to lwlib
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parents:
306
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72 struct lw_strpool *strpool; |
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parents:
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changeset
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73 lw_stringlist_t quotelist; |
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74 lw_stringlist_t inclist; |
| 295 | 75 }; |
| 76 | |
| 77 extern struct preproc_info *preproc_init(const char *); | |
| 78 extern struct token *preproc_next_token(struct preproc_info *); | |
| 296 | 79 extern struct token *preproc_next_processed_token(struct preproc_info *); |
| 295 | 80 extern void preproc_finish(struct preproc_info *); |
| 81 extern void preproc_register_error_callback(struct preproc_info *, void (*)(const char *)); | |
| 82 extern void preproc_register_warning_callback(struct preproc_info *, void (*)(const char *)); | |
| 83 extern void preproc_throw_error(struct preproc_info *, const char *, ...); | |
| 84 extern void preproc_throw_warning(struct preproc_info *, const char *, ...); | |
| 296 | 85 extern void preproc_unget_token(struct preproc_info *, struct token *); |
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86 extern void preproc_add_include(struct preproc_info *, char *, int); |
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87 extern void preproc_add_macro(struct preproc_info *, char *); |
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304
d85d173ba120
Checkpoint lwcc development - preprocessor is runnable but nonfunctional
William Astle <lost@l-w.ca>
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300
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88 extern struct token *preproc_next(struct preproc_info *); |
| 296 | 89 |
| 295 | 90 #endif // cpp_h_seen___ |