defs.h revision 272955 
1/* $Id: defs.h,v 1.51 2014/10/02 22:38:13 tom Exp $ */
2
3#ifdef HAVE_CONFIG_H
4#include <config.h>
5#endif
6
7#include <limits.h>
8#include <stdlib.h>
9#include <string.h>
10#include <errno.h>
11#include <assert.h>
12#include <ctype.h>
13#include <stdio.h>
14
15#if defined(__cplusplus)	/* __cplusplus, etc. */
16#define class myClass
17#endif
18
19#define YYMAJOR 1
20#define YYMINOR 9
21
22#define CONCAT(first,second)    first #second
23#define CONCAT1(string,number)  CONCAT(string, number)
24#define CONCAT2(first,second)   #first "." #second
25
26#ifdef YYPATCH
27#define VSTRING(a,b) CONCAT2(a,b) CONCAT1(" ",YYPATCH)
28#else
29#define VSTRING(a,b) CONCAT2(a,b)
30#endif
31
32#define VERSION VSTRING(YYMAJOR, YYMINOR)
33
34/*  machine-dependent definitions:			*/
35
36/*  MAXCHAR is the largest unsigned character value	*/
37/*  MAXTABLE is the maximum table size			*/
38/*  YYINT is the smallest C integer type that can be	*/
39/*	used to address a table of size MAXTABLE	*/
40/*  MAXYYINT is the largest value of a YYINT		*/
41/*  MINYYINT is the most negative value of a YYINT	*/
42/*  BITS_PER_WORD is the number of bits in a C unsigned	*/
43/*  WORDSIZE computes the number of words needed to	*/
44/*	store n bits					*/
45/*  BIT returns the value of the n-th bit starting	*/
46/*	from r (0-indexed)				*/
47/*  SETBIT sets the n-th bit starting from r		*/
48
49#define	MAXCHAR		UCHAR_MAX
50#ifndef MAXTABLE
51#define MAXTABLE	32500
52#endif
53#if MAXTABLE <= SHRT_MAX
54#define YYINT		short
55#define MAXYYINT	SHRT_MAX
56#define MINYYINT	SHRT_MIN
57#elif MAXTABLE <= INT_MAX
58#define YYINT		int
59#define MAXYYINT	INT_MAX
60#define MINYYINT	INT_MIN
61#else
62#error "MAXTABLE is too large for this machine architecture!"
63#endif
64
65#define BITS_PER_WORD	((int) sizeof (unsigned) * CHAR_BIT)
66#define WORDSIZE(n)	(((n)+(BITS_PER_WORD-1))/BITS_PER_WORD)
67#define BIT(r, n)	((((r)[(n)/BITS_PER_WORD])>>((n)&(BITS_PER_WORD-1)))&1)
68#define SETBIT(r, n)	((r)[(n)/BITS_PER_WORD]|=((unsigned)1<<((n)&(BITS_PER_WORD-1))))
69
70/*  character names  */
71
72#define	NUL		'\0'	/*  the null character  */
73#define	NEWLINE		'\n'	/*  line feed  */
74#define	SP		' '	/*  space  */
75#define	BS		'\b'	/*  backspace  */
76#define	HT		'\t'	/*  horizontal tab  */
77#define	VT		'\013'	/*  vertical tab  */
78#define	CR		'\r'	/*  carriage return  */
79#define	FF		'\f'	/*  form feed  */
80#define	QUOTE		'\''	/*  single quote  */
81#define	DOUBLE_QUOTE	'\"'	/*  double quote  */
82#define	BACKSLASH	'\\'	/*  backslash  */
83
84#define UCH(c)          (unsigned char)(c)
85
86/* defines for constructing filenames */
87
88#if defined(VMS)
89#define CODE_SUFFIX	"_code.c"
90#define	DEFINES_SUFFIX	"_tab.h"
91#define	EXTERNS_SUFFIX	"_tab.i"
92#define	OUTPUT_SUFFIX	"_tab.c"
93#else
94#define CODE_SUFFIX	".code.c"
95#define	DEFINES_SUFFIX	".tab.h"
96#define	EXTERNS_SUFFIX	".tab.i"
97#define	OUTPUT_SUFFIX	".tab.c"
98#endif
99#define	VERBOSE_SUFFIX	".output"
100#define GRAPH_SUFFIX    ".dot"
101
102/* keyword codes */
103
104#define TOKEN 0
105#define LEFT 1
106#define RIGHT 2
107#define NONASSOC 3
108#define MARK 4
109#define TEXT 5
110#define TYPE 6
111#define START 7
112#define UNION 8
113#define IDENT 9
114#define EXPECT 10
115#define EXPECT_RR 11
116#define PURE_PARSER 12
117#define PARSE_PARAM 13
118#define LEX_PARAM 14
119#define POSIX_YACC 15
120#define TOKEN_TABLE 16
121
122#if defined(YYBTYACC)
123#define LOCATIONS 17
124#define DESTRUCTOR 18
125#endif
126
127/*  symbol classes  */
128
129#define UNKNOWN 0
130#define TERM 1
131#define NONTERM 2
132#define ACTION 3
133#define ARGUMENT 4
134
135/*  the undefined value  */
136
137#define UNDEFINED (-1)
138
139/*  action codes  */
140
141#define SHIFT 1
142#define REDUCE 2
143
144/*  character macros  */
145
146#define IS_IDENT(c)	(isalnum(c) || (c) == '_' || (c) == '.' || (c) == '$')
147#define	IS_OCTAL(c)	((c) >= '0' && (c) <= '7')
148#define	NUMERIC_VALUE(c)	((c) - '0')
149
150/*  symbol macros  */
151
152#define ISTOKEN(s)	((s) < start_symbol)
153#define ISVAR(s)	((s) >= start_symbol)
154
155/*  storage allocation macros  */
156
157#define CALLOC(k,n)	(calloc((size_t)(k),(size_t)(n)))
158#define	FREE(x)		(free((char*)(x)))
159#define MALLOC(n)	(malloc((size_t)(n)))
160#define TCMALLOC(t,n)	((t*) calloc((size_t)(n), sizeof(t)))
161#define TMALLOC(t,n)	((t*) malloc((size_t)(n) * sizeof(t)))
162#define	NEW(t)		((t*)allocate(sizeof(t)))
163#define	NEW2(n,t)	((t*)allocate(((size_t)(n)*sizeof(t))))
164#define REALLOC(p,n)	(realloc((char*)(p),(size_t)(n)))
165#define TREALLOC(t,p,n)	((t*)realloc((char*)(p), (size_t)(n) * sizeof(t)))
166
167#define DO_FREE(x)	if (x) { FREE(x); x = 0; }
168
169#define NO_SPACE(p)	if (p == 0) no_space(); assert(p != 0)
170
171/* messages */
172#define PLURAL(n) ((n) > 1 ? "s" : "")
173
174/*
175 * Features which depend indirectly on the btyacc configuration, but are not
176 * essential.
177 */
178#if defined(YYBTYACC)
179#define USE_HEADER_GUARDS 1
180#else
181#define USE_HEADER_GUARDS 0
182#endif
183
184typedef char Assoc_t;
185typedef char Class_t;
186typedef YYINT Index_t;
187typedef YYINT Value_t;
188
189/*  the structure of a symbol table entry  */
190
191typedef struct bucket bucket;
192struct bucket
193{
194    struct bucket *link;
195    struct bucket *next;
196    char *name;
197    char *tag;
198#if defined(YYBTYACC)
199    char **argnames;
200    char **argtags;
201    int  args;
202    char *destructor;
203#endif
204    Value_t value;
205    Index_t index;
206    Value_t prec;
207    Class_t class;
208    Assoc_t assoc;
209};
210
211/*  the structure of the LR(0) state machine  */
212
213typedef struct core core;
214struct core
215{
216    struct core *next;
217    struct core *link;
218    Value_t number;
219    Value_t accessing_symbol;
220    Value_t nitems;
221    Value_t items[1];
222};
223
224/*  the structure used to record shifts  */
225
226typedef struct shifts shifts;
227struct shifts
228{
229    struct shifts *next;
230    Value_t number;
231    Value_t nshifts;
232    Value_t shift[1];
233};
234
235/*  the structure used to store reductions  */
236
237typedef struct reductions reductions;
238struct reductions
239{
240    struct reductions *next;
241    Value_t number;
242    Value_t nreds;
243    Value_t rules[1];
244};
245
246/*  the structure used to represent parser actions  */
247
248typedef struct action action;
249struct action
250{
251    struct action *next;
252    Value_t symbol;
253    Value_t number;
254    Value_t prec;
255    char action_code;
256    Assoc_t assoc;
257    char suppressed;
258};
259
260/*  the structure used to store parse/lex parameters  */
261typedef struct param param;
262struct param
263{
264    struct param *next;
265    char *name;		/* parameter name */
266    char *type;		/* everything before parameter name */
267    char *type2;	/* everything after parameter name */
268};
269
270/* global variables */
271
272extern char dflag;
273extern char gflag;
274extern char iflag;
275extern char lflag;
276extern char rflag;
277extern char sflag;
278extern char tflag;
279extern char vflag;
280extern const char *symbol_prefix;
281
282extern const char *myname;
283extern char *cptr;
284extern char *line;
285extern int lineno;
286extern int outline;
287extern int exit_code;
288extern int pure_parser;
289extern int token_table;
290#if defined(YYBTYACC)
291extern int locations;
292extern int backtrack;
293extern int destructor;
294#endif
295
296extern const char *const banner[];
297extern const char *const xdecls[];
298extern const char *const tables[];
299extern const char *const global_vars[];
300extern const char *const impure_vars[];
301extern const char *const hdr_defs[];
302extern const char *const hdr_vars[];
303extern const char *const body_1[];
304extern const char *const body_vars[];
305extern const char *const body_2[];
306extern const char *const trailer[];
307
308extern char *code_file_name;
309extern char *input_file_name;
310extern char *defines_file_name;
311extern char *externs_file_name;
312
313extern FILE *action_file;
314extern FILE *code_file;
315extern FILE *defines_file;
316extern FILE *externs_file;
317extern FILE *input_file;
318extern FILE *output_file;
319extern FILE *text_file;
320extern FILE *union_file;
321extern FILE *verbose_file;
322extern FILE *graph_file;
323
324extern Value_t nitems;
325extern Value_t nrules;
326extern Value_t nsyms;
327extern Value_t ntokens;
328extern Value_t nvars;
329extern int ntags;
330
331extern char unionized;
332extern char line_format[];
333
334extern Value_t start_symbol;
335extern char **symbol_name;
336extern char **symbol_pname;
337extern Value_t *symbol_value;
338extern Value_t *symbol_prec;
339extern char *symbol_assoc;
340
341#if defined(YYBTYACC)
342extern Value_t *symbol_pval;
343extern char **symbol_destructor;
344extern char **symbol_type_tag;
345#endif
346
347extern Value_t *ritem;
348extern Value_t *rlhs;
349extern Value_t *rrhs;
350extern Value_t *rprec;
351extern Assoc_t *rassoc;
352
353extern Value_t **derives;
354extern char *nullable;
355
356extern bucket *first_symbol;
357extern bucket *last_symbol;
358
359extern int nstates;
360extern core *first_state;
361extern shifts *first_shift;
362extern reductions *first_reduction;
363extern Value_t *accessing_symbol;
364extern core **state_table;
365extern shifts **shift_table;
366extern reductions **reduction_table;
367extern unsigned *LA;
368extern Value_t *LAruleno;
369extern Value_t *lookaheads;
370extern Value_t *goto_base;
371extern Value_t *goto_map;
372extern Value_t *from_state;
373extern Value_t *to_state;
374
375extern action **parser;
376extern int SRexpect;
377extern int RRexpect;
378extern int SRtotal;
379extern int RRtotal;
380extern Value_t *SRconflicts;
381extern Value_t *RRconflicts;
382extern Value_t *defred;
383extern Value_t *rules_used;
384extern Value_t nunused;
385extern Value_t final_state;
386
387extern Value_t *itemset;
388extern Value_t *itemsetend;
389extern unsigned *ruleset;
390
391extern param *lex_param;
392extern param *parse_param;
393
394/* global functions */
395
396#ifndef GCC_NORETURN
397#if defined(__dead2)
398#define GCC_NORETURN		__dead2
399#elif defined(__dead)
400#define GCC_NORETURN		__dead
401#else
402#define GCC_NORETURN		/* nothing */
403#endif
404#endif
405
406#ifndef GCC_UNUSED
407#if defined(__unused)
408#define GCC_UNUSED		__unused
409#else
410#define GCC_UNUSED		/* nothing */
411#endif
412#endif
413
414#ifndef GCC_PRINTFLIKE
415#define GCC_PRINTFLIKE(fmt,var) /*nothing*/
416#endif
417
418/* closure.c */
419extern void closure(Value_t * nucleus, int n);
420extern void finalize_closure(void);
421extern void set_first_derives(void);
422
423/* error.c */
424extern void arg_number_disagree_warning(int a_lineno, char *a_name);
425extern void arg_type_disagree_warning(int a_lineno, int i, char *a_name);
426extern void at_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
427extern void at_warning(int a_lineno, int i);
428extern void bad_formals(void) GCC_NORETURN;
429extern void default_action_warning(void);
430extern void destructor_redeclared_warning(int a_lineno, char *a_line, char *a_cptr);
431extern void dollar_error(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
432extern void dollar_warning(int a_lineno, int i);
433extern void fatal(const char *msg) GCC_NORETURN;
434extern void illegal_character(char *c_cptr) GCC_NORETURN;
435extern void illegal_tag(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
436extern void missing_brace(void) GCC_NORETURN;
437extern void no_grammar(void) GCC_NORETURN;
438extern void no_space(void) GCC_NORETURN;
439extern void open_error(const char *filename) GCC_NORETURN;
440extern void over_unionized(char *u_cptr) GCC_NORETURN;
441extern void prec_redeclared(void);
442extern void reprec_warning(char *s);
443extern void restarted_warning(void);
444extern void retyped_warning(char *s);
445extern void revalued_warning(char *s);
446extern void start_requires_args(char *a_name);
447extern void syntax_error(int st_lineno, char *st_line, char *st_cptr) GCC_NORETURN;
448extern void terminal_lhs(int s_lineno) GCC_NORETURN;
449extern void terminal_start(char *s) GCC_NORETURN;
450extern void tokenized_start(char *s) GCC_NORETURN;
451extern void undefined_goal(char *s) GCC_NORETURN;
452extern void undefined_symbol_warning(char *s);
453extern void unexpected_EOF(void) GCC_NORETURN;
454extern void unknown_arg_warning(int d_lineno, const char *dlr_opt, const char *d_arg, const char *d_line, const char *d_cptr);
455extern void unknown_rhs(int i) GCC_NORETURN;
456extern void unsupported_flag_warning(const char *flag, const char *details);
457extern void unterminated_action(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
458extern void unterminated_comment(int c_lineno, char *c_line, char *c_cptr) GCC_NORETURN;
459extern void unterminated_string(int s_lineno, char *s_line, char *s_cptr) GCC_NORETURN;
460extern void unterminated_text(int t_lineno, char *t_line, char *t_cptr) GCC_NORETURN;
461extern void unterminated_union(int u_lineno, char *u_line, char *u_cptr) GCC_NORETURN;
462extern void untyped_arg_warning(int a_lineno, const char *dlr_opt, const char *a_name);
463extern void untyped_lhs(void) GCC_NORETURN;
464extern void untyped_rhs(int i, char *s) GCC_NORETURN;
465extern void used_reserved(char *s) GCC_NORETURN;
466extern void unterminated_arglist(int a_lineno, char *a_line, char *a_cptr) GCC_NORETURN;
467extern void wrong_number_args_warning(const char *which, const char *a_name);
468extern void wrong_type_for_arg_warning(int i, char *a_name);
469
470/* graph.c */
471extern void graph(void);
472
473/* lalr.c */
474extern void lalr(void);
475
476/* lr0.c */
477extern void lr0(void);
478extern void show_cores(void);
479extern void show_ritems(void);
480extern void show_rrhs(void);
481extern void show_shifts(void);
482
483/* main.c */
484extern void *allocate(size_t n);
485extern void done(int k) GCC_NORETURN;
486
487/* mkpar.c */
488extern void free_parser(void);
489extern void make_parser(void);
490
491/* mstring.c */
492struct mstring
493{
494    char *base, *ptr, *end;
495};
496
497extern void msprintf(struct mstring *, const char *, ...) GCC_PRINTFLIKE(2,3);
498extern int mputchar(struct mstring *, int);
499extern struct mstring *msnew(void);
500extern char *msdone(struct mstring *);
501extern int strnscmp(const char *, const char *);
502extern unsigned int strnshash(const char *);
503
504#define mputc(m, ch)	(((m)->ptr == (m)->end) \
505			 ? mputchar(m,ch) \
506			 : (*(m)->ptr++ = (char) (ch)))
507
508/* output.c */
509extern void output(void);
510
511/* reader.c */
512extern void reader(void);
513
514/* skeleton.c (generated by skel2c) */
515extern void write_section(FILE * fp, const char *const section[]);
516
517/* symtab.c */
518extern bucket *make_bucket(const char *);
519extern bucket *lookup(const char *);
520extern void create_symbol_table(void);
521extern void free_symbol_table(void);
522extern void free_symbols(void);
523
524/* verbose.c */
525extern void verbose(void);
526
527/* warshall.c */
528extern void reflexive_transitive_closure(unsigned *R, int n);
529
530#ifdef DEBUG
531    /* closure.c */
532extern void print_closure(int n);
533extern void print_EFF(void);
534extern void print_first_derives(void);
535    /* lr0.c */
536extern void print_derives(void);
537#endif
538
539#ifdef NO_LEAKS
540extern void lr0_leaks(void);
541extern void lalr_leaks(void);
542extern void mkpar_leaks(void);
543extern void output_leaks(void);
544extern void mstring_leaks(void);
545extern void reader_leaks(void);
546#endif
547