2 * Copyright (c) 1989 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)defs.h 5.6 (Berkeley) 5/24/93
37 * $FreeBSD: src/usr.bin/yacc/defs.h,v 1.8.2.1 2001/10/05 03:00:19 obrien Exp $
38 * $DragonFly: src/usr.bin/yacc/defs.h,v 1.2 2003/06/17 04:29:34 dillon Exp $
41 #include <sys/cdefs.h> /* for __P macro */
48 /* machine-dependent definitions */
49 /* the following definitions are for the Tahoe */
50 /* they might have to be changed for other machines */
52 /* MAXCHAR is the largest unsigned character value */
53 /* MAXSHORT is the largest value of a C short */
54 /* MINSHORT is the most negative value of a C short */
55 /* MAXTABLE is the maximum table size */
56 /* BITS_PER_WORD is the number of bits in a C unsigned */
57 /* WORDSIZE computes the number of words needed to */
59 /* BIT returns the value of the n-th bit starting */
60 /* from r (0-indexed) */
61 /* SETBIT sets the n-th bit starting from r */
64 #define MAXSHORT 32767
65 #define MINSHORT -32768
66 #define MAXTABLE 32500
67 #define BITS_PER_WORD 32
68 #define WORDSIZE(n) (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
69 #define BIT(r, n) ((((r)[(n)>>5])>>((n)&31))&1)
70 #define SETBIT(r, n) ((r)[(n)>>5]|=((unsigned)1<<((n)&31)))
75 #define NUL '\0' /* the null character */
76 #define NEWLINE '\n' /* line feed */
77 #define SP ' ' /* space */
78 #define BS '\b' /* backspace */
79 #define HT '\t' /* horizontal tab */
80 #define VT '\013' /* vertical tab */
81 #define CR '\r' /* carriage return */
82 #define FF '\f' /* form feed */
83 #define QUOTE '\'' /* single quote */
84 #define DOUBLE_QUOTE '\"' /* double quote */
85 #define BACKSLASH '\\' /* backslash */
88 /* defines for constructing filenames */
90 #define CODE_SUFFIX ".code.c"
91 #define DEFINES_SUFFIX ".tab.h"
92 #define OUTPUT_SUFFIX ".tab.c"
93 #define VERBOSE_SUFFIX ".output"
118 /* the undefined value */
120 #define UNDEFINED (-1)
129 /* character macros */
131 #define IS_IDENT(c) (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
132 #define IS_OCTAL(c) ((c) >= '0' && (c) <= '7')
133 #define NUMERIC_VALUE(c) ((c) - '0')
138 #define ISTOKEN(s) ((s) < start_symbol)
139 #define ISVAR(s) ((s) >= start_symbol)
142 /* storage allocation macros */
144 #define CALLOC(k,n) (calloc((unsigned)(k),(unsigned)(n)))
145 #define FREE(x) (free((char*)(x)))
146 #define MALLOC(n) (malloc((unsigned)(n)))
147 #define NEW(t) ((t*)allocate(sizeof(t)))
148 #define NEW2(n,t) ((t*)allocate((unsigned)((n)*sizeof(t))))
149 #define REALLOC(p,n) (realloc((char*)(p),(unsigned)(n)))
152 /* the structure of a symbol table entry */
154 typedef struct bucket bucket;
169 /* the structure of the LR(0) state machine */
171 typedef struct core core;
177 short accessing_symbol;
183 /* the structure used to record shifts */
185 typedef struct shifts shifts;
195 /* the structure used to store reductions */
197 typedef struct reductions reductions;
200 struct reductions *next;
207 /* the structure used to represent parser actions */
209 typedef struct action action;
222 /* global variables */
229 extern char *symbol_prefix;
237 extern char *banner[];
238 extern char *tables[];
239 extern char *header[];
241 extern char *trailer[];
243 extern char *action_file_name;
244 extern char *code_file_name;
245 extern char *defines_file_name;
246 extern char *input_file_name;
247 extern char *output_file_name;
248 extern char *text_file_name;
249 extern char *union_file_name;
250 extern char *verbose_file_name;
252 extern FILE *action_file;
253 extern FILE *code_file;
254 extern FILE *defines_file;
255 extern FILE *input_file;
256 extern FILE *output_file;
257 extern FILE *text_file;
258 extern FILE *union_file;
259 extern FILE *verbose_file;
268 extern char unionized;
270 extern int start_symbol;
271 extern char **symbol_name;
272 extern short *symbol_value;
273 extern short *symbol_prec;
274 extern char *symbol_assoc;
282 extern short **derives;
283 extern char *nullable;
285 extern bucket *first_symbol;
286 extern bucket *last_symbol;
289 extern core *first_state;
290 extern shifts *first_shift;
291 extern reductions *first_reduction;
292 extern short *accessing_symbol;
293 extern core **state_table;
294 extern shifts **shift_table;
295 extern reductions **reduction_table;
297 extern short *LAruleno;
298 extern short *lookaheads;
299 extern short *goto_map;
300 extern short *from_state;
301 extern short *to_state;
303 extern action **parser;
307 extern short *SRconflicts;
308 extern short *RRconflicts;
309 extern short *defred;
310 extern short *rules_used;
311 extern short nunused;
312 extern short final_state;
314 /* global functions */
316 char *allocate __P((unsigned));
317 void closure __P((short *, int));
318 void create_symbol_table __P((void));
319 void default_action_warning __P((void));
320 void dollar_error __P((int, char *, char *));
321 void dollar_warning __P((int, int));
322 void done __P((int));
323 void fatal __P((char *msg));
324 void finalize_closure __P((void));
325 void free_parser __P((void));
326 void free_symbols __P((void));
327 void free_symbol_table __P((void));
328 void illegal_character __P((char *));
329 void illegal_tag __P((int, char *, char *));
330 void lalr __P((void));
331 bucket *lookup __P((char *));
332 void lr0 __P((void));
333 bucket *make_bucket __P((char *));
334 void make_parser __P((void));
335 void no_grammar __P((void));
336 void no_space __P((void));
337 void open_error __P((char *));
338 void output __P((void));
339 void over_unionized __P((char *));
340 void prec_redeclared __P((void));
341 void reader __P((void));
342 void reflexive_transitive_closure __P((unsigned *, int));
343 void reprec_warning __P((char *));
344 void restarted_warning __P((void));
345 void retyped_warning __P((char *));
346 void revalued_warning __P((char *));
347 void set_first_derives __P((void));
348 void syntax_error __P((int, char *, char *));
349 void terminal_lhs __P((int));
350 void terminal_start __P((char *));
351 void tokenized_start __P((char *));
352 void undefined_goal __P((char *));
353 void undefined_symbol_warning __P((char *));
354 void unexpected_EOF __P((void));
355 void unknown_rhs __P((int));
356 void unterminated_action __P((int, char *, char *));
357 void unterminated_comment __P((int, char *, char *));
358 void unterminated_string __P((int, char *, char *));
359 void unterminated_text __P((int, char *, char *));
360 void unterminated_union __P((int, char *, char *));
361 void untyped_lhs __P((void));
362 void untyped_rhs __P((int, char *));
363 void used_reserved __P((char *));
364 void verbose __P((void));
365 void write_section __P((char **));