📄 tiny.tab.c
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/* A Bison parser, made from yacc\tiny.y
by GNU Bison version 1.25
*/
#define YYBISON 1 /* Identify Bison output. */
#define alloca
#define IF 258
#define THEN 259
#define ELSE 260
#define END 261
#define REPEAT 262
#define UNTIL 263
#define READ 264
#define WRITE 265
#define ID 266
#define NUM 267
#define ASSIGN 268
#define EQ 269
#define LT 270
#define PLUS 271
#define MINUS 272
#define TIMES 273
#define OVER 274
#define LPAREN 275
#define RPAREN 276
#define SEMI 277
#define ERROR 278
#line 7 "yacc\tiny.y"
#define YYPARSER /* distinguishes Yacc output from other code files */
#include "globals.h"
#include "util.h"
#include "scan.h"
#include "parse.h"
#define YYSTYPE TreeNode *
static char * savedName; /* for use in assignments */
static int savedLineNo; /* ditto */
static TreeNode * savedTree; /* stores syntax tree for later return */
#ifndef YYSTYPE
#define YYSTYPE int
#endif
#include <stdio.h>
#ifndef __cplusplus
#ifndef __STDC__
#define const
#endif
#endif
#define YYFINAL 54
#define YYFLAG 32768
#define YYNTBASE 24
#define YYTRANSLATE(x) ((unsigned)(x) <= 278 ? yytranslate[x] : 37)
static const char yytranslate[] = { 0,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 1, 2, 3, 4, 5,
6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23
};
#if YYDEBUG != 0
static const short yyprhs[] = { 0,
0, 2, 6, 8, 10, 12, 14, 16, 18, 20,
26, 34, 39, 40, 45, 48, 51, 55, 59, 61,
65, 69, 71, 75, 79, 81, 85, 87, 89
};
static const short yyrhs[] = { 25,
0, 25, 22, 26, 0, 26, 0, 27, 0, 28,
0, 29, 0, 31, 0, 32, 0, 1, 0, 3,
33, 4, 25, 6, 0, 3, 33, 4, 25, 5,
25, 6, 0, 7, 25, 8, 33, 0, 0, 11,
30, 13, 33, 0, 9, 11, 0, 10, 33, 0,
34, 15, 34, 0, 34, 14, 34, 0, 34, 0,
34, 16, 35, 0, 34, 17, 35, 0, 35, 0,
35, 18, 36, 0, 35, 19, 36, 0, 36, 0,
20, 33, 21, 0, 12, 0, 11, 0, 1, 0
};
#endif
#if YYDEBUG != 0
static const short yyrline[] = { 0,
29, 32, 41, 43, 44, 45, 46, 47, 48, 50,
55, 62, 68, 70, 77, 83, 88, 94, 100, 102,
108, 114, 116, 122, 128, 130, 132, 136, 140
};
#endif
#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)
static const char * const yytname[] = { "$","error","$undefined.","IF","THEN",
"ELSE","END","REPEAT","UNTIL","READ","WRITE","ID","NUM","ASSIGN","EQ","LT","PLUS",
"MINUS","TIMES","OVER","LPAREN","RPAREN","SEMI","ERROR","program","stmt_seq",
"stmt","if_stmt","repeat_stmt","assign_stmt","@1","read_stmt","write_stmt","exp",
"simple_exp","term","factor", NULL
};
#endif
static const short yyr1[] = { 0,
24, 25, 25, 26, 26, 26, 26, 26, 26, 27,
27, 28, 30, 29, 31, 32, 33, 33, 33, 34,
34, 34, 35, 35, 35, 36, 36, 36, 36
};
static const short yyr2[] = { 0,
1, 3, 1, 1, 1, 1, 1, 1, 1, 5,
7, 4, 0, 4, 2, 2, 3, 3, 1, 3,
3, 1, 3, 3, 1, 3, 1, 1, 1
};
static const short yydefact[] = { 0,
9, 0, 0, 0, 0, 13, 1, 3, 4, 5,
6, 7, 8, 29, 28, 27, 0, 0, 19, 22,
25, 0, 15, 16, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 2, 26, 0, 18,
17, 20, 21, 23, 24, 12, 14, 0, 10, 0,
11, 0, 0, 0
};
static const short yydefgoto[] = { 52,
7, 8, 9, 10, 11, 25, 12, 13, 18, 19,
20, 21
};
static const short yypact[] = { 26,
-32768, 3, 26, -8, 3,-32768, -15,-32768,-32768,-32768,
-32768,-32768,-32768,-32768,-32768,-32768, 3, 15, -5, -1,
-32768, -6,-32768,-32768, 17, 26, 5, 26, 3, 3,
3, 3, 3, 3, 3, 3,-32768,-32768, 0, 4,
4, -1, -1,-32768,-32768,-32768,-32768, 26,-32768, 2,
-32768, 28, 34,-32768
};
static const short yypgoto[] = {-32768,
-3, 14,-32768,-32768,-32768,-32768,-32768,-32768, -4, 9,
10, 13
};
#define YYLAST 47
static const short yytable[] = { 22,
24, 35, 23, 14, 48, 49, 26, 51, 29, 30,
31, 32, 27, 15, 16, 26, 33, 34, 28, 31,
32, 26, 17, 26, 39, 38, 1, 53, 2, 36,
46, 47, 3, 54, 4, 5, 6, 40, 41, 37,
42, 43, 0, 0, 50, 44, 45
};
static const short yycheck[] = { 3,
5, 8, 11, 1, 5, 6, 22, 6, 14, 15,
16, 17, 17, 11, 12, 22, 18, 19, 4, 16,
17, 22, 20, 22, 28, 21, 1, 0, 3, 13,
35, 36, 7, 0, 9, 10, 11, 29, 30, 26,
31, 32, -1, -1, 48, 33, 34
};
/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
/* Skeleton output parser for bison,
Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* As a special exception, when this file is copied by Bison into a
Bison output file, you may use that output file without restriction.
This special exception was added by the Free Software Foundation
in version 1.24 of Bison. */
#ifndef alloca
#ifdef __GNUC__
#define alloca __builtin_alloca
#else /* not GNU C. */
#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi)
#include <alloca.h>
#else /* not sparc */
#if defined (MSDOS) && !defined (__TURBOC__)
#include <malloc.h>
#else /* not MSDOS, or __TURBOC__ */
#if defined(_AIX)
#include <malloc.h>
#pragma alloca
#else /* not MSDOS, __TURBOC__, or _AIX */
#ifdef __hpux
#ifdef __cplusplus
extern "C" {
void *alloca (unsigned int);
};
#else /* not __cplusplus */
void *alloca ();
#endif /* not __cplusplus */
#endif /* __hpux */
#endif /* not _AIX */
#endif /* not MSDOS, or __TURBOC__ */
#endif /* not sparc. */
#endif /* not GNU C. */
#endif /* alloca not defined. */
/* This is the parser code that is written into each bison parser
when the %semantic_parser declaration is not specified in the grammar.
It was written by Richard Stallman by simplifying the hairy parser
used when %semantic_parser is specified. */
/* Note: there must be only one dollar sign in this file.
It is replaced by the list of actions, each action
as one case of the switch. */
#define yyerrok (yyerrstatus = 0)
#define yyclearin (yychar = YYEMPTY)
#define YYEMPTY -2
#define YYEOF 0
#define YYACCEPT return(0)
#define YYABORT return(1)
#define YYERROR goto yyerrlab1
/* Like YYERROR except do call yyerror.
This remains here temporarily to ease the
transition to the new meaning of YYERROR, for GCC.
Once GCC version 2 has supplanted version 1, this can go. */
#define YYFAIL goto yyerrlab
#define YYRECOVERING() (!!yyerrstatus)
#define YYBACKUP(token, value) \
do \
if (yychar == YYEMPTY && yylen == 1) \
{ yychar = (token), yylval = (value); \
yychar1 = YYTRANSLATE (yychar); \
YYPOPSTACK; \
goto yybackup; \
} \
else \
{ yyerror ("syntax error: cannot back up"); YYERROR; } \
while (0)
#define YYTERROR 1
#define YYERRCODE 256
#ifndef YYPURE
#define YYLEX yylex()
#endif
#ifdef YYPURE
#ifdef YYLSP_NEEDED
#ifdef YYLEX_PARAM
#define YYLEX yylex(&yylval, &yylloc, YYLEX_PARAM)
#else
#define YYLEX yylex(&yylval, &yylloc)
#endif
#else /* not YYLSP_NEEDED */
#ifdef YYLEX_PARAM
#define YYLEX yylex(&yylval, YYLEX_PARAM)
#else
#define YYLEX yylex(&yylval)
#endif
#endif /* not YYLSP_NEEDED */
#endif
/* If nonreentrant, generate the variables here */
#ifndef YYPURE
int yychar; /* the lookahead symbol */
YYSTYPE yylval; /* the semantic value of the */
/* lookahead symbol */
#ifdef YYLSP_NEEDED
YYLTYPE yylloc; /* location data for the lookahead */
/* symbol */
#endif
int yynerrs; /* number of parse errors so far */
#endif /* not YYPURE */
#if YYDEBUG != 0
int yydebug; /* nonzero means print parse trace */
/* Since this is uninitialized, it does not stop multiple parsers
from coexisting. */
#endif
/* YYINITDEPTH indicates the initial size of the parser's stacks */
#ifndef YYINITDEPTH
#define YYINITDEPTH 200
#endif
/* YYMAXDEPTH is the maximum size the stacks can grow to
(effective only if the built-in stack extension method is used). */
#if YYMAXDEPTH == 0
#undef YYMAXDEPTH
#endif
#ifndef YYMAXDEPTH
#define YYMAXDEPTH 10000
#endif
/* Prevent warning if -Wstrict-prototypes. */
#ifdef __GNUC__
int yyparse (void);
#endif
#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
#define __yy_memcpy(TO,FROM,COUNT) __builtin_memcpy(TO,FROM,COUNT)
#else /* not GNU C or C++ */
#ifndef __cplusplus
/* This is the most reliable way to avoid incompatibilities
in available built-in functions on various systems. */
static void
__yy_memcpy (to, from, count)
char *to;
char *from;
int count;
{
register char *f = from;
register char *t = to;
register int i = count;
while (i-- > 0)
*t++ = *f++;
}
#else /* __cplusplus */
/* This is the most reliable way to avoid incompatibilities
in available built-in functions on various systems. */
static void
__yy_memcpy (char *to, char *from, int count)
{
register char *f = from;
register char *t = to;
register int i = count;
while (i-- > 0)
*t++ = *f++;
}
#endif
#endif
/* The user can define YYPARSE_PARAM as the name of an argument to be passed
into yyparse. The argument should have type void *.
It should actually point to an object.
Grammar actions can access the variable by casting it
to the proper pointer type. */
#ifdef YYPARSE_PARAM
#ifdef __cplusplus
#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
#define YYPARSE_PARAM_DECL
#else /* not __cplusplus */
#define YYPARSE_PARAM_ARG YYPARSE_PARAM
#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
#endif /* not __cplusplus */
#else /* not YYPARSE_PARAM */
#define YYPARSE_PARAM_ARG
#define YYPARSE_PARAM_DECL
#endif /* not YYPARSE_PARAM */
int
yyparse(YYPARSE_PARAM_ARG)
YYPARSE_PARAM_DECL
{
register int yystate;
register int yyn;
register short *yyssp;
register YYSTYPE *yyvsp;
int yyerrstatus; /* number of tokens to shift before error messages enabled */
int yychar1 = 0; /* lookahead token as an internal (translated) token number */
short yyssa[YYINITDEPTH]; /* the state stack */
YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
short *yyss = yyssa; /* refer to the stacks thru separate pointers */
YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
#ifdef YYLSP_NEEDED
YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
YYLTYPE *yyls = yylsa;
YYLTYPE *yylsp;
#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
#else
#define YYPOPSTACK (yyvsp--, yyssp--)
#endif
int yystacksize = YYINITDEPTH;
#ifdef YYPURE
int yychar;
YYSTYPE yylval;
int yynerrs;
#ifdef YYLSP_NEEDED
YYLTYPE yylloc;
#endif
#endif
YYSTYPE yyval; /* the variable used to return */
/* semantic values from the action */
/* routines */
int yylen;
#if YYDEBUG != 0
if (yydebug)
fprintf(stderr, "Starting parse\n");
#endif
yystate = 0;
yyerrstatus = 0;
yynerrs = 0;
yychar = YYEMPTY; /* Cause a token to be read. */
/* Initialize stack pointers.
Waste one element of value and location stack
so that they stay on the same level as the state stack.
The wasted elements are never initialized. */
yyssp = yyss - 1;
yyvsp = yyvs;
#ifdef YYLSP_NEEDED
yylsp = yyls;
#endif
/* Push a new state, which is found in yystate . */
/* In all cases, when you get here, the value and location stacks
have just been pushed. so pushing a state here evens the stacks. */
yynewstate:
*++yyssp = yystate;
if (yyssp >= yyss + yystacksize - 1)
{
/* Give user a chance to reallocate the stack */
/* Use copies of these so that the &'s don't force the real ones into memory. */
YYSTYPE *yyvs1 = yyvs;
short *yyss1 = yyss;
#ifdef YYLSP_NEEDED
YYLTYPE *yyls1 = yyls;
#endif
/* Get the current used size of the three stacks, in elements. */
int size = yyssp - yyss + 1;
#ifdef yyoverflow
/* Each stack pointer address is followed by the size of
the data in use in that stack, in bytes. */
#ifdef YYLSP_NEEDED
/* This used to be a conditional around just the two extra args,
but that might be undefined if yyoverflow is a macro. */
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yyls1, size * sizeof (*yylsp),
&yystacksize);
#else
yyoverflow("parser stack overflow",
&yyss1, size * sizeof (*yyssp),
&yyvs1, size * sizeof (*yyvsp),
&yystacksize);
#endif
yyss = yyss1; yyvs = yyvs1;
#ifdef YYLSP_NEEDED
yyls = yyls1;
#endif
#else /* no yyoverflow */
/* Extend the stack our own way. */
if (yystacksize >= YYMAXDEPTH)
{
yyerror("parser stack overflow");
return 2;
}
yystacksize *= 2;
if (yystacksize > YYMAXDEPTH)
yystacksize = YYMAXDEPTH;
yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
__yy_memcpy ((char *)yyss, (char *)yyss1, size * sizeof (*yyssp));
yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
__yy_memcpy ((char *)yyvs, (char *)yyvs1, size * sizeof (*yyvsp));
#ifdef YYLSP_NEEDED
yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
__yy_memcpy ((char *)yyls, (char *)yyls1, size * sizeof (*yylsp));
#endif
#endif /* no yyoverflow */
yyssp = yyss + size - 1;
yyvsp = yyvs + size - 1;
#ifdef YYLSP_NEEDED
yylsp = yyls + size - 1;
#endif
#if YYDEBUG != 0
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