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
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 1.4 2003/11/06 19:30:05 eirikn Exp $
47 /* machine-dependent definitions */
48 /* the following definitions are for the Tahoe */
49 /* they might have to be changed for other machines */
51 /* MAXCHAR is the largest unsigned character value */
52 /* MAXSHORT is the largest value of a C short */
53 /* MINSHORT is the most negative value of a C short */
54 /* MAXTABLE is the maximum table size */
55 /* BITS_PER_WORD is the number of bits in a C unsigned */
56 /* WORDSIZE computes the number of words needed to */
58 /* BIT returns the value of the n-th bit starting */
59 /* from r (0-indexed) */
60 /* SETBIT sets the n-th bit starting from r */
63 #define MAXSHORT 32767
64 #define MINSHORT -32768
65 #define MAXTABLE 32500
66 #define BITS_PER_WORD 32
67 #define WORDSIZE(n) (((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
68 #define BIT(r, n) ((((r)[(n)>>5])>>((n)&31))&1)
69 #define SETBIT(r, n) ((r)[(n)>>5]|=((unsigned)1<<((n)&31)))
74 #define NUL '\0' /* the null character */
75 #define NEWLINE '\n' /* line feed */
76 #define SP ' ' /* space */
77 #define BS '\b' /* backspace */
78 #define HT '\t' /* horizontal tab */
79 #define VT '\013' /* vertical tab */
80 #define CR '\r' /* carriage return */
81 #define FF '\f' /* form feed */
82 #define QUOTE '\'' /* single quote */
83 #define DOUBLE_QUOTE '\"' /* double quote */
84 #define BACKSLASH '\\' /* backslash */
87 /* defines for constructing filenames */
89 #define CODE_SUFFIX ".code.c"
90 #define DEFINES_SUFFIX ".tab.h"
91 #define OUTPUT_SUFFIX ".tab.c"
92 #define VERBOSE_SUFFIX ".output"
117 /* the undefined value */
119 #define UNDEFINED (-1)
128 /* character macros */
130 #define IS_IDENT(c) (isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
131 #define IS_OCTAL(c) ((c) >= '0' && (c) <= '7')
132 #define NUMERIC_VALUE(c) ((c) - '0')
137 #define ISTOKEN(s) ((s) < start_symbol)
138 #define ISVAR(s) ((s) >= start_symbol)
141 /* storage allocation macros */
143 #define CALLOC(k,n) (calloc((unsigned)(k),(unsigned)(n)))
144 #define FREE(x) (free((char*)(x)))
145 #define MALLOC(n) (malloc((unsigned)(n)))
146 #define NEW(t) ((t*)allocate(sizeof(t)))
147 #define NEW2(n,t) ((t*)allocate((unsigned)((n)*sizeof(t))))
148 #define REALLOC(p,n) (realloc((char*)(p),(unsigned)(n)))
151 /* the structure of a symbol table entry */
153 typedef struct bucket bucket;
168 /* the structure of the LR(0) state machine */
170 typedef struct core core;
176 short accessing_symbol;
182 /* the structure used to record shifts */
184 typedef struct shifts shifts;
194 /* the structure used to store reductions */
196 typedef struct reductions reductions;
199 struct reductions *next;
206 /* the structure used to represent parser actions */
208 typedef struct action action;
221 /* global variables */
228 extern char *symbol_prefix;
236 extern char *banner[];
237 extern char *tables[];
238 extern char *header[];
240 extern char *trailer[];
242 extern char *action_file_name;
243 extern char *code_file_name;
244 extern char *defines_file_name;
245 extern char *input_file_name;
246 extern char *output_file_name;
247 extern char *text_file_name;
248 extern char *union_file_name;
249 extern char *verbose_file_name;
251 extern FILE *action_file;
252 extern FILE *code_file;
253 extern FILE *defines_file;
254 extern FILE *input_file;
255 extern FILE *output_file;
256 extern FILE *text_file;
257 extern FILE *union_file;
258 extern FILE *verbose_file;
267 extern char unionized;
269 extern int start_symbol;
270 extern char **symbol_name;
271 extern short *symbol_value;
272 extern short *symbol_prec;
273 extern char *symbol_assoc;
281 extern short **derives;
282 extern char *nullable;
284 extern bucket *first_symbol;
285 extern bucket *last_symbol;
288 extern core *first_state;
289 extern shifts *first_shift;
290 extern reductions *first_reduction;
291 extern short *accessing_symbol;
292 extern core **state_table;
293 extern shifts **shift_table;
294 extern reductions **reduction_table;
296 extern short *LAruleno;
297 extern short *lookaheads;
298 extern short *goto_map;
299 extern short *from_state;
300 extern short *to_state;
302 extern action **parser;
306 extern short *SRconflicts;
307 extern short *RRconflicts;
308 extern short *defred;
309 extern short *rules_used;
310 extern short nunused;
311 extern short final_state;
313 /* global functions */
315 char *allocate(unsigned);
316 void closure(short *, int);
317 void create_symbol_table(void);
318 void default_action_warning(void);
319 void dollar_error(int, char *, char *);
320 void dollar_warning(int, int);
322 void fatal(char *msg);
323 void finalize_closure(void);
324 void free_parser(void);
325 void free_symbols(void);
326 void free_symbol_table(void);
327 void illegal_character(char *);
328 void illegal_tag(int, char *, char *);
330 bucket *lookup(char *);
332 bucket *make_bucket(char *);
333 void make_parser(void);
334 void no_grammar(void);
336 void open_error(char *);
338 void over_unionized(char *);
339 void prec_redeclared(void);
341 void reflexive_transitive_closure(unsigned *, int);
342 void reprec_warning(char *);
343 void restarted_warning(void);
344 void retyped_warning(char *);
345 void revalued_warning(char *);
346 void set_first_derives(void);
347 void syntax_error(int, char *, char *);
348 void terminal_lhs(int);
349 void terminal_start(char *);
350 void tokenized_start(char *);
351 void undefined_goal(char *);
352 void undefined_symbol_warning(char *);
353 void unexpected_EOF(void);
354 void unknown_rhs(int);
355 void unterminated_action(int, char *, char *);
356 void unterminated_comment(int, char *, char *);
357 void unterminated_string(int, char *, char *);
358 void unterminated_text(int, char *, char *);
359 void unterminated_union(int, char *, char *);
360 void untyped_lhs(void);
361 void untyped_rhs(int, char *);
362 void used_reserved(char *);
364 void write_section(char **);