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295
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1 /*
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2 lwcc/cpp.h
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3
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4 Copyright © 2013 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #ifndef cpp_h_seen___
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23 #define cpp_h_seen___
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24
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25 #include <stdio.h>
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26
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296
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27 //#include "symbol.h"
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295
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28 #include "token.h"
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29
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30 #define TOKBUFSIZE 32
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31
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296
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32 struct expand_e
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33 {
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34 struct expand_e *next;
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35 struct symtab_e *s; // symbol table entry of the expanding symbol
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36 };
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37
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295
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38 struct preproc_info
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39 {
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40 const char *fn;
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41 FILE *fp;
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42 struct token *tokqueue;
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296
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43 struct token *curtok;
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295
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44 void (*errorcb)(const char *);
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45 void (*warningcb)(const char *);
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296
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46 int eolstate; // internal for use in handling newlines
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47 int lineno; // the current input line number
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48 int column; // the current input column
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49 int trigraphs; // nonzero if we're going to handle trigraphs
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295
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50 int ra;
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51 int qseen;
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52 int ungetbufl;
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53 int ungetbufs;
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54 int *ungetbuf;
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55 int unget;
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56 int eolseen;
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57 int nlseen;
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296
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58 int ppeolseen; // nonzero if we've seen only whitespace (or nothing) since a newline
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59 int skip_level; // nonzero if we're in a false conditional
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60 int found_level; // nonzero if we're in a true conditional
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61 int else_level; // for counting #else directives
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62 int else_skip_level; // ditto
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63 struct symtab_e *sh; // the preprocessor's symbol table
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64 struct token *sourcelist; // for expanding a list of tokens
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65 struct expand_e *expand_list; // record of which macros are currently being expanded
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66
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67 };
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68
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69 extern struct preproc_info *preproc_init(const char *);
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70 extern struct token *preproc_next_token(struct preproc_info *);
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296
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71 extern struct token *preproc_next_processed_token(struct preproc_info *);
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295
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72 extern void preproc_finish(struct preproc_info *);
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73 extern void preproc_register_error_callback(struct preproc_info *, void (*)(const char *));
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74 extern void preproc_register_warning_callback(struct preproc_info *, void (*)(const char *));
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75 extern void preproc_throw_error(struct preproc_info *, const char *, ...);
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76 extern void preproc_throw_warning(struct preproc_info *, const char *, ...);
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296
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77 extern void preproc_unget_token(struct preproc_info *, struct token *);
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78
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295
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79 #endif // cpp_h_seen___
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