xref: /dflybsd-src/contrib/byacc/yaccpar.c (revision ec1c3f3acbcc9eec2e3e83bf248a95cca926a503)
1  /* This file generated automatically using
2   * @Id: skel2c,v 1.4 2016/06/07 00:26:09 tom Exp @
3   */
4  
5  /* @Id: yaccpar.skel,v 1.11 2021/06/19 20:45:25 tom Exp @ */
6  
7  #include "defs.h"
8  
9  /*  If the skeleton is changed, the banner should be changed so that	*/
10  /*  the altered version can be easily distinguished from the original.	*/
11  /*									*/
12  /*  The #defines included with the banner are there because they are	*/
13  /*  useful in subsequent code.  The macros #defined in the header or	*/
14  /*  the body either are not useful outside of semantic actions or	*/
15  /*  are conditional.							*/
16  
17  const char *const banner[] =
18  {
19      "/* original parser id follows */",
20      "/* yysccsid[] = \"@(#)yaccpar	1.9 (Berkeley) 02/21/93\" */",
21      "/* (use YYMAJOR/YYMINOR for ifdefs dependent on parser version) */",
22      "",
23      "#define YYBYACC 1",
24      CONCAT1("#define YYMAJOR ", YYMAJOR),
25      CONCAT1("#define YYMINOR ", YYMINOR),
26  #ifdef YYPATCH
27      CONCAT1("#define YYPATCH ", YYPATCH),
28  #endif
29      "",
30      "#define YYEMPTY        (-1)",
31      "#define yyclearin      (yychar = YYEMPTY)",
32      "#define yyerrok        (yyerrflag = 0)",
33      "#define YYRECOVERING() (yyerrflag != 0)",
34      "#define YYENOMEM       (-2)",
35      "#define YYEOF          0",
36      0
37  };
38  
39  const char *const xdecls[] =
40  {
41      "",
42      "extern int YYPARSE_DECL();",
43      0
44  };
45  
46  const char *const tables[] =
47  {
48      "extern YYINT yylhs[];",
49      "extern YYINT yylen[];",
50      "extern YYINT yydefred[];",
51      "extern YYINT yydgoto[];",
52      "extern YYINT yysindex[];",
53      "extern YYINT yyrindex[];",
54      "extern YYINT yygindex[];",
55      "extern YYINT yytable[];",
56      "extern YYINT yycheck[];",
57      "",
58      "#if YYDEBUG || defined(yytname)",
59      "extern char *yyname[];",
60      "#endif",
61      "#if YYDEBUG",
62      "extern char *yyrule[];",
63      "#endif",
64      0
65  };
66  
67  const char *const global_vars[] =
68  {
69      "",
70      "#if YYDEBUG",
71      "int      yydebug;",
72      "#endif",
73      0
74  };
75  
76  const char *const impure_vars[] =
77  {
78      "",
79      "int      yyerrflag;",
80      "int      yychar;",
81      "YYSTYPE  yyval;",
82      "YYSTYPE  yylval;",
83      "int      yynerrs;",
84      0
85  };
86  
87  const char *const hdr_defs[] =
88  {
89      "",
90      "/* define the initial stack-sizes */",
91      "#ifdef YYSTACKSIZE",
92      "#undef YYMAXDEPTH",
93      "#define YYMAXDEPTH  YYSTACKSIZE",
94      "#else",
95      "#ifdef YYMAXDEPTH",
96      "#define YYSTACKSIZE YYMAXDEPTH",
97      "#else",
98      "#define YYSTACKSIZE 10000",
99      "#define YYMAXDEPTH  10000",
100      "#endif",
101      "#endif",
102      "",
103      "#define YYINITSTACKSIZE 200",
104      "",
105      "typedef struct {",
106      "    unsigned stacksize;",
107      "    YYINT    *s_base;",
108      "    YYINT    *s_mark;",
109      "    YYINT    *s_last;",
110      "    YYSTYPE  *l_base;",
111      "    YYSTYPE  *l_mark;",
112      "} YYSTACKDATA;",
113      0
114  };
115  
116  const char *const hdr_vars[] =
117  {
118      "/* variables for the parser stack */",
119      "static YYSTACKDATA yystack;",
120      0
121  };
122  
123  const char *const body_vars[] =
124  {
125      "    int      yyerrflag;",
126      "    int      yychar;",
127      "    YYSTYPE  yyval;",
128      "    YYSTYPE  yylval;",
129      "    int      yynerrs;",
130      "",
131      "    /* variables for the parser stack */",
132      "    YYSTACKDATA yystack;",
133      0
134  };
135  
136  const char *const body_1[] =
137  {
138      "",
139      "#if YYDEBUG",
140      "#include <stdio.h>	/* needed for printf */",
141      "#endif",
142      "",
143      "#include <stdlib.h>	/* needed for malloc, etc */",
144      "#include <string.h>	/* needed for memset */",
145      "",
146      "/* allocate initial stack or double stack size, up to YYMAXDEPTH */",
147      "static int yygrowstack(YYSTACKDATA *data)",
148      "{",
149      "    int i;",
150      "    unsigned newsize;",
151      "    YYINT *newss;",
152      "    YYSTYPE *newvs;",
153      "",
154      "    if ((newsize = data->stacksize) == 0)",
155      "        newsize = YYINITSTACKSIZE;",
156      "    else if (newsize >= YYMAXDEPTH)",
157      "        return YYENOMEM;",
158      "    else if ((newsize *= 2) > YYMAXDEPTH)",
159      "        newsize = YYMAXDEPTH;",
160      "",
161      "    i = (int) (data->s_mark - data->s_base);",
162      "    newss = (YYINT *)realloc(data->s_base, newsize * sizeof(*newss));",
163      "    if (newss == 0)",
164      "        return YYENOMEM;",
165      "",
166      "    data->s_base = newss;",
167      "    data->s_mark = newss + i;",
168      "",
169      "    newvs = (YYSTYPE *)realloc(data->l_base, newsize * sizeof(*newvs));",
170      "    if (newvs == 0)",
171      "        return YYENOMEM;",
172      "",
173      "    data->l_base = newvs;",
174      "    data->l_mark = newvs + i;",
175      "",
176      "    data->stacksize = newsize;",
177      "    data->s_last = data->s_base + newsize - 1;",
178      "    return 0;",
179      "}",
180      "",
181      "#if YYPURE || defined(YY_NO_LEAKS)",
182      "static void yyfreestack(YYSTACKDATA *data)",
183      "{",
184      "    free(data->s_base);",
185      "    free(data->l_base);",
186      "    memset(data, 0, sizeof(*data));",
187      "}",
188      "#else",
189      "#define yyfreestack(data) /* nothing */",
190      "#endif",
191      "",
192      "#define YYABORT  goto yyabort",
193      "#define YYREJECT goto yyabort",
194      "#define YYACCEPT goto yyaccept",
195      "#define YYERROR  goto yyerrlab",
196      "",
197      "int",
198      "YYPARSE_DECL()",
199      "{",
200      0
201  };
202  
203  const char *const body_2[] =
204  {
205      "    int yym, yyn, yystate;",
206      "#if YYDEBUG",
207      "    const char *yys;",
208      "",
209      "    if ((yys = getenv(\"YYDEBUG\")) != 0)",
210      "    {",
211      "        yyn = *yys;",
212      "        if (yyn >= '0' && yyn <= '9')",
213      "            yydebug = yyn - '0';",
214      "    }",
215      "#endif",
216      "",
217      0
218  };
219  
220  const char *const init_vars[] =
221  {
222      "    memset(&yyval,  0, sizeof(yyval));",
223      "    memset(&yylval, 0, sizeof(yylval));",
224      "",
225      0
226  };
227  
228  const char *const body_3[] =
229  {
230      "    /* yym is set below */",
231      "    /* yyn is set below */",
232      "    yynerrs = 0;",
233      "    yyerrflag = 0;",
234      "    yychar = YYEMPTY;",
235      "    yystate = 0;",
236      "",
237      "#if YYPURE",
238      "    memset(&yystack, 0, sizeof(yystack));",
239      "#endif",
240      "",
241      "    if (yystack.s_base == NULL && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;",
242      "    yystack.s_mark = yystack.s_base;",
243      "    yystack.l_mark = yystack.l_base;",
244      "    yystate = 0;",
245      "    *yystack.s_mark = 0;",
246      "",
247      "yyloop:",
248      "    if ((yyn = yydefred[yystate]) != 0) goto yyreduce;",
249      "    if (yychar < 0)",
250      "    {",
251      "        yychar = YYLEX;",
252      "        if (yychar < 0) yychar = YYEOF;",
253      "#if YYDEBUG",
254      "        if (yydebug)",
255      "        {",
256      "            if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN];",
257      "            printf(\"%sdebug: state %d, reading %d (%s)\\n\",",
258      "                    YYPREFIX, yystate, yychar, yys);",
259      "        }",
260      "#endif",
261      "    }",
262      "    if (((yyn = yysindex[yystate]) != 0) && (yyn += yychar) >= 0 &&",
263      "            yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)",
264      "    {",
265      "#if YYDEBUG",
266      "        if (yydebug)",
267      "            printf(\"%sdebug: state %d, shifting to state %d\\n\",",
268      "                    YYPREFIX, yystate, yytable[yyn]);",
269      "#endif",
270      "        if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;",
271      "        yystate = yytable[yyn];",
272      "        *++yystack.s_mark = yytable[yyn];",
273      "        *++yystack.l_mark = yylval;",
274      "        yychar = YYEMPTY;",
275      "        if (yyerrflag > 0)  --yyerrflag;",
276      "        goto yyloop;",
277      "    }",
278      "    if (((yyn = yyrindex[yystate]) != 0) && (yyn += yychar) >= 0 &&",
279      "            yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yychar)",
280      "    {",
281      "        yyn = yytable[yyn];",
282      "        goto yyreduce;",
283      "    }",
284      "    if (yyerrflag != 0) goto yyinrecovery;",
285      "",
286      "    YYERROR_CALL(\"syntax error\");",
287      "",
288      "    goto yyerrlab; /* redundant goto avoids 'unused label' warning */",
289      "yyerrlab:",
290      "    ++yynerrs;",
291      "",
292      "yyinrecovery:",
293      "    if (yyerrflag < 3)",
294      "    {",
295      "        yyerrflag = 3;",
296      "        for (;;)",
297      "        {",
298      "            if (((yyn = yysindex[*yystack.s_mark]) != 0) && (yyn += YYERRCODE) >= 0 &&",
299      "                    yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) YYERRCODE)",
300      "            {",
301      "#if YYDEBUG",
302      "                if (yydebug)",
303      "                    printf(\"%sdebug: state %d, error recovery shifting\\",
304      " to state %d\\n\", YYPREFIX, *yystack.s_mark, yytable[yyn]);",
305      "#endif",
306      "                if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;",
307      "                yystate = yytable[yyn];",
308      "                *++yystack.s_mark = yytable[yyn];",
309      "                *++yystack.l_mark = yylval;",
310      "                goto yyloop;",
311      "            }",
312      "            else",
313      "            {",
314      "#if YYDEBUG",
315      "                if (yydebug)",
316      "                    printf(\"%sdebug: error recovery discarding state %d\\n\",",
317      "                            YYPREFIX, *yystack.s_mark);",
318      "#endif",
319      "                if (yystack.s_mark <= yystack.s_base) goto yyabort;",
320      "                --yystack.s_mark;",
321      "                --yystack.l_mark;",
322      "            }",
323      "        }",
324      "    }",
325      "    else",
326      "    {",
327      "        if (yychar == YYEOF) goto yyabort;",
328      "#if YYDEBUG",
329      "        if (yydebug)",
330      "        {",
331      "            if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN];",
332      "            printf(\"%sdebug: state %d, error recovery discards token %d (%s)\\n\",",
333      "                    YYPREFIX, yystate, yychar, yys);",
334      "        }",
335      "#endif",
336      "        yychar = YYEMPTY;",
337      "        goto yyloop;",
338      "    }",
339      "",
340      "yyreduce:",
341      "#if YYDEBUG",
342      "    if (yydebug)",
343      "        printf(\"%sdebug: state %d, reducing by rule %d (%s)\\n\",",
344      "                YYPREFIX, yystate, yyn, yyrule[yyn]);",
345      "#endif",
346      "    yym = yylen[yyn];",
347      "    if (yym > 0)",
348      "        yyval = yystack.l_mark[1-yym];",
349      "    else",
350      "        memset(&yyval, 0, sizeof yyval);",
351      "",
352      "    switch (yyn)",
353      "    {",
354      0
355  };
356  
357  const char *const trailer[] =
358  {
359      "    }",
360      "    yystack.s_mark -= yym;",
361      "    yystate = *yystack.s_mark;",
362      "    yystack.l_mark -= yym;",
363      "    yym = yylhs[yyn];",
364      "    if (yystate == 0 && yym == 0)",
365      "    {",
366      "#if YYDEBUG",
367      "        if (yydebug)",
368      "            printf(\"%sdebug: after reduction, shifting from state 0 to\\",
369      " state %d\\n\", YYPREFIX, YYFINAL);",
370      "#endif",
371      "        yystate = YYFINAL;",
372      "        *++yystack.s_mark = YYFINAL;",
373      "        *++yystack.l_mark = yyval;",
374      "        if (yychar < 0)",
375      "        {",
376      "            yychar = YYLEX;",
377      "            if (yychar < 0) yychar = YYEOF;",
378      "#if YYDEBUG",
379      "            if (yydebug)",
380      "            {",
381      "                if ((yys = yyname[YYTRANSLATE(yychar)]) == NULL) yys = yyname[YYUNDFTOKEN];",
382      "                printf(\"%sdebug: state %d, reading %d (%s)\\n\",",
383      "                        YYPREFIX, YYFINAL, yychar, yys);",
384      "            }",
385      "#endif",
386      "        }",
387      "        if (yychar == YYEOF) goto yyaccept;",
388      "        goto yyloop;",
389      "    }",
390      "    if (((yyn = yygindex[yym]) != 0) && (yyn += yystate) >= 0 &&",
391      "            yyn <= YYTABLESIZE && yycheck[yyn] == (YYINT) yystate)",
392      "        yystate = yytable[yyn];",
393      "    else",
394      "        yystate = yydgoto[yym];",
395      "#if YYDEBUG",
396      "    if (yydebug)",
397      "        printf(\"%sdebug: after reduction, shifting from state %d \\",
398      "to state %d\\n\", YYPREFIX, *yystack.s_mark, yystate);",
399      "#endif",
400      "    if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow;",
401      "    *++yystack.s_mark = (YYINT) yystate;",
402      "    *++yystack.l_mark = yyval;",
403      "    goto yyloop;",
404      "",
405      "yyoverflow:",
406      "    YYERROR_CALL(\"yacc stack overflow\");",
407      "",
408      "yyabort:",
409      "    yyfreestack(&yystack);",
410      "    return (1);",
411      "",
412      "yyaccept:",
413      "    yyfreestack(&yystack);",
414      "    return (0);",
415      "}",
416      0
417  };
418  
419  void
420  write_section(FILE * fp, const char *const section[])
421  {
422      int i;
423      const char *s;
424  
425      for (i = 0; (s = section[i]) != 0; ++i)
426      {
427  	if (fp == code_file)
428  	    ++outline;
429  	fprintf(fp, "%s\n", s);
430      }
431  }
432