1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
|
/* $OpenBSD: skeleton.c,v 1.39 2015/12/31 23:22:39 guenther Exp $ */
/* $NetBSD: skeleton.c,v 1.10 1996/03/25 00:36:18 mrg Exp $ */
/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Robert Paul Corbett.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "defs.h"
/* The definition of yysccsid in the banner should be replaced with */
/* a #pragma ident directive if the target C compiler supports */
/* #pragma ident directives. */
/* */
/* If the skeleton is changed, the banner should be changed so that */
/* the altered version can be easily distinguished from the original. */
/* */
/* The #defines included with the banner are there because they are */
/* useful in subsequent code. The macros #defined in the header or */
/* the body either are not useful outside of semantic actions or */
/* are conditional. */
char *banner[] =
{
"#include <stdlib.h>",
"#include <string.h>",
"#define YYBYACC 1",
"#define YYMAJOR 1",
"#define YYMINOR 9",
"#define YYLEX yylex()",
"#define YYEMPTY -1",
"#define yyclearin (yychar=(YYEMPTY))",
"#define yyerrok (yyerrflag=0)",
"#define YYRECOVERING() (yyerrflag!=0)",
NULL
};
char *tables[] =
{
"extern const short yylhs[];",
"extern const short yylen[];",
"extern const short yydefred[];",
"extern const short yydgoto[];",
"extern const short yysindex[];",
"extern const short yyrindex[];",
"extern const short yygindex[];",
"extern const short yytable[];",
"extern const short yycheck[];",
"#if YYDEBUG",
"extern const char *const yyname[];",
"extern const char *const yyrule[];",
"#endif",
NULL
};
char *header[] =
{
"#ifdef YYSTACKSIZE",
"#undef YYMAXDEPTH",
"#define YYMAXDEPTH YYSTACKSIZE",
"#else",
"#ifdef YYMAXDEPTH",
"#define YYSTACKSIZE YYMAXDEPTH",
"#else",
"#define YYSTACKSIZE 10000",
"#define YYMAXDEPTH 10000",
"#endif",
"#endif",
"#define YYINITSTACKSIZE 200",
"/* LINTUSED */",
"int yydebug;",
"int yynerrs;",
"int yyerrflag;",
"int yychar;",
"short *yyssp;",
"YYSTYPE *yyvsp;",
"YYSTYPE yyval;",
"YYSTYPE yylval;",
"short *yyss;",
"short *yysslim;",
"YYSTYPE *yyvs;",
"unsigned int yystacksize;",
"int yyparse(void);",
NULL
};
char *body[] =
{
"/* allocate initial stack or double stack size, up to YYMAXDEPTH */",
"static int yygrowstack(void)",
"{",
" unsigned int newsize;",
" long sslen;",
" short *newss;",
" YYSTYPE *newvs;",
"",
" if ((newsize = yystacksize) == 0)",
" newsize = YYINITSTACKSIZE;",
" else if (newsize >= YYMAXDEPTH)",
" return -1;",
" else if ((newsize *= 2) > YYMAXDEPTH)",
" newsize = YYMAXDEPTH;",
" sslen = yyssp - yyss;",
"#ifdef SIZE_MAX",
"#define YY_SIZE_MAX SIZE_MAX",
"#else",
"#define YY_SIZE_MAX 0xffffffffU",
"#endif",
" if (newsize && YY_SIZE_MAX / newsize < sizeof *newss)",
" goto bail;",
" newss = yyss ? (short *)realloc(yyss, newsize * sizeof *newss) :",
" (short *)malloc(newsize * sizeof *newss); /* overflow check above */",
" if (newss == NULL)",
" goto bail;",
" yyss = newss;",
" yyssp = newss + sslen;",
" if (newsize && YY_SIZE_MAX / newsize < sizeof *newvs)",
" goto bail;",
" newvs = yyvs ? (YYSTYPE *)realloc(yyvs, newsize * sizeof *newvs) :",
" (YYSTYPE *)malloc(newsize * sizeof *newvs); /* overflow check above */",
" if (newvs == NULL)",
" goto bail;",
" yyvs = newvs;",
" yyvsp = newvs + sslen;",
" yystacksize = newsize;",
" yysslim = yyss + newsize - 1;",
" return 0;",
"bail:",
" if (yyss)",
" free(yyss);",
" if (yyvs)",
" free(yyvs);",
" yyss = yyssp = NULL;",
" yyvs = yyvsp = NULL;",
" yystacksize = 0;",
" return -1;",
"}",
"",
"#define YYABORT goto yyabort",
"#define YYREJECT goto yyabort",
"#define YYACCEPT goto yyaccept",
"#define YYERROR goto yyerrlab",
"int",
"yyparse(void)",
"{",
" int yym, yyn, yystate;",
"#if YYDEBUG",
" const char *yys;",
"",
" if ((yys = getenv(\"YYDEBUG\")))",
" {",
" yyn = *yys;",
" if (yyn >= '0' && yyn <= '9')",
" yydebug = yyn - '0';",
" }",
"#endif /* YYDEBUG */",
"",
" yynerrs = 0;",
" yyerrflag = 0;",
" yychar = (-1);",
"",
" if (yyss == NULL && yygrowstack()) goto yyoverflow;",
" yyssp = yyss;",
" yyvsp = yyvs;",
" *yyssp = yystate = 0;",
"",
"yyloop:",
" if ((yyn = yydefred[yystate]) != 0) goto yyreduce;",
" if (yychar < 0)",
" {",
" if ((yychar = yylex()) < 0) yychar = 0;",
"#if YYDEBUG",
" if (yydebug)",
" {",
" yys = 0;",
" if (yychar <= YYMAXTOKEN) yys = yyname[yychar];",
" if (!yys) yys = \"illegal-symbol\";",
" printf(\"%sdebug: state %d, reading %d (%s)\\n\",",
" YYPREFIX, yystate, yychar, yys);",
" }",
"#endif",
" }",
" if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&",
" yyn <= YYTABLESIZE && yycheck[yyn] == yychar)",
" {",
"#if YYDEBUG",
" if (yydebug)",
" printf(\"%sdebug: state %d, shifting to state %d\\n\",",
" YYPREFIX, yystate, yytable[yyn]);",
"#endif",
" if (yyssp >= yysslim && yygrowstack())",
" {",
" goto yyoverflow;",
" }",
" *++yyssp = yystate = yytable[yyn];",
" *++yyvsp = yylval;",
" yychar = (-1);",
" if (yyerrflag > 0) --yyerrflag;",
" goto yyloop;",
" }",
" if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&",
" yyn <= YYTABLESIZE && yycheck[yyn] == yychar)",
" {",
" yyn = yytable[yyn];",
" goto yyreduce;",
" }",
" if (yyerrflag) goto yyinrecovery;",
"#if defined(__GNUC__)",
" goto yynewerror;",
"#endif",
"yynewerror:",
" yyerror(\"syntax error\");",
"#if defined(__GNUC__)",
" goto yyerrlab;",
"#endif",
"yyerrlab:",
" ++yynerrs;",
"yyinrecovery:",
" if (yyerrflag < 3)",
" {",
" yyerrflag = 3;",
" for (;;)",
" {",
" if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE) >= 0 &&",
" yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)",
" {",
"#if YYDEBUG",
" if (yydebug)",
" printf(\"%sdebug: state %d, error recovery shifting\\",
" to state %d\\n\", YYPREFIX, *yyssp, yytable[yyn]);",
"#endif",
" if (yyssp >= yysslim && yygrowstack())",
" {",
" goto yyoverflow;",
" }",
" *++yyssp = yystate = yytable[yyn];",
" *++yyvsp = yylval;",
" goto yyloop;",
" }",
" else",
" {",
"#if YYDEBUG",
" if (yydebug)",
" printf(\"%sdebug: error recovery discarding state %d\
\\n\",",
" YYPREFIX, *yyssp);",
"#endif",
" if (yyssp <= yyss) goto yyabort;",
" --yyssp;",
" --yyvsp;",
" }",
" }",
" }",
" else",
" {",
" if (yychar == 0) goto yyabort;",
"#if YYDEBUG",
" if (yydebug)",
" {",
" yys = 0;",
" if (yychar <= YYMAXTOKEN) yys = yyname[yychar];",
" if (!yys) yys = \"illegal-symbol\";",
" printf(\"%sdebug: state %d, error recovery discards token %d\
(%s)\\n\",",
" YYPREFIX, yystate, yychar, yys);",
" }",
"#endif",
" yychar = (-1);",
" goto yyloop;",
" }",
"yyreduce:",
"#if YYDEBUG",
" if (yydebug)",
" printf(\"%sdebug: state %d, reducing by rule %d (%s)\\n\",",
" YYPREFIX, yystate, yyn, yyrule[yyn]);",
"#endif",
" yym = yylen[yyn];",
" if (yym)",
" yyval = yyvsp[1-yym];",
" else",
" memset(&yyval, 0, sizeof yyval);",
" switch (yyn)",
" {",
NULL
};
char *trailer[] =
{
" }",
" yyssp -= yym;",
" yystate = *yyssp;",
" yyvsp -= yym;",
" yym = yylhs[yyn];",
" if (yystate == 0 && yym == 0)",
" {",
"#if YYDEBUG",
" if (yydebug)",
" printf(\"%sdebug: after reduction, shifting from state 0 to\\",
" state %d\\n\", YYPREFIX, YYFINAL);",
"#endif",
" yystate = YYFINAL;",
" *++yyssp = YYFINAL;",
" *++yyvsp = yyval;",
" if (yychar < 0)",
" {",
" if ((yychar = yylex()) < 0) yychar = 0;",
"#if YYDEBUG",
" if (yydebug)",
" {",
" yys = 0;",
" if (yychar <= YYMAXTOKEN) yys = yyname[yychar];",
" if (!yys) yys = \"illegal-symbol\";",
" printf(\"%sdebug: state %d, reading %d (%s)\\n\",",
" YYPREFIX, YYFINAL, yychar, yys);",
" }",
"#endif",
" }",
" if (yychar == 0) goto yyaccept;",
" goto yyloop;",
" }",
" if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&",
" yyn <= YYTABLESIZE && yycheck[yyn] == yystate)",
" yystate = yytable[yyn];",
" else",
" yystate = yydgoto[yym];",
"#if YYDEBUG",
" if (yydebug)",
" printf(\"%sdebug: after reduction, shifting from state %d \\",
"to state %d\\n\", YYPREFIX, *yyssp, yystate);",
"#endif",
" if (yyssp >= yysslim && yygrowstack())",
" {",
" goto yyoverflow;",
" }",
" *++yyssp = yystate;",
" *++yyvsp = yyval;",
" goto yyloop;",
"yyoverflow:",
" yyerror(\"yacc stack overflow\");",
"yyabort:",
" if (yyss)",
" free(yyss);",
" if (yyvs)",
" free(yyvs);",
" yyss = yyssp = NULL;",
" yyvs = yyvsp = NULL;",
" yystacksize = 0;",
" return (1);",
"yyaccept:",
" if (yyss)",
" free(yyss);",
" if (yyvs)",
" free(yyvs);",
" yyss = yyssp = NULL;",
" yyvs = yyvsp = NULL;",
" yystacksize = 0;",
" return (0);",
"}",
NULL
};
void
write_section(char *section[])
{
int i;
char *s;
for (i = 0; (s = section[i]); ++i) {
++outline;
fputs(s, code_file);
putc('\n', code_file);
}
}
|
