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asterisk/ast_expr2.c
Kevin P. Fleming 7ffb604a2f issue #4678 
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6936 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2005-11-01 21:53:30 +00:00

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/* A Bison parser, made by GNU Bison 1.875d. */
/* Skeleton parser for Yacc-like parsing with Bison,
Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, 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. */
/* Written by Richard Stallman by simplifying the original so called
``semantic'' parser. */
/* All symbols defined below should begin with yy or YY, to avoid
infringing on user name space. This should be done even for local
variables, as they might otherwise be expanded by user macros.
There are some unavoidable exceptions within include files to
define necessary library symbols; they are noted "INFRINGES ON
USER NAME SPACE" below. */
/* Identify Bison output. */
#define YYBISON 1
/* Skeleton name. */
#define YYSKELETON_NAME "yacc.c"
/* Pure parsers. */
#define YYPURE 1
/* Using locations. */
#define YYLSP_NEEDED 1
/* If NAME_PREFIX is specified substitute the variables and functions
names. */
#define yyparse ast_yyparse
#define yylex ast_yylex
#define yyerror ast_yyerror
#define yylval ast_yylval
#define yychar ast_yychar
#define yydebug ast_yydebug
#define yynerrs ast_yynerrs
#define yylloc ast_yylloc
/* Tokens. */
#ifndef YYTOKENTYPE
# define YYTOKENTYPE
/* Put the tokens into the symbol table, so that GDB and other debuggers
know about them. */
enum yytokentype {
TOK_COLONCOLON = 258,
TOK_COND = 259,
TOK_OR = 260,
TOK_AND = 261,
TOK_NE = 262,
TOK_LE = 263,
TOK_GE = 264,
TOK_LT = 265,
TOK_GT = 266,
TOK_EQ = 267,
TOK_MINUS = 268,
TOK_PLUS = 269,
TOK_MOD = 270,
TOK_DIV = 271,
TOK_MULT = 272,
TOK_COMPL = 273,
TOK_EQTILDE = 274,
TOK_COLON = 275,
TOK_LP = 276,
TOK_RP = 277,
TOKEN = 278
};
#endif
#define TOK_COLONCOLON 258
#define TOK_COND 259
#define TOK_OR 260
#define TOK_AND 261
#define TOK_NE 262
#define TOK_LE 263
#define TOK_GE 264
#define TOK_LT 265
#define TOK_GT 266
#define TOK_EQ 267
#define TOK_MINUS 268
#define TOK_PLUS 269
#define TOK_MOD 270
#define TOK_DIV 271
#define TOK_MULT 272
#define TOK_COMPL 273
#define TOK_EQTILDE 274
#define TOK_COLON 275
#define TOK_LP 276
#define TOK_RP 277
#define TOKEN 278
/* Copy the first part of user declarations. */
#line 1 "ast_expr2.y"
/* Written by Pace Willisson (pace@blitz.com)
* and placed in the public domain.
*
* Largely rewritten by J.T. Conklin (jtc@wimsey.com)
*
* And then overhauled twice by Steve Murphy (murf@e-tools.com)
* to add double-quoted strings, allow mult. spaces, improve
* error messages, and then to fold in a flex scanner for the
* yylex operation.
*
* $FreeBSD: src/bin/expr/expr.y,v 1.16 2000/07/22 10:59:36 se Exp $
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <ctype.h>
#if !defined(SOLARIS) && !defined(__CYGWIN__)
#include <err.h>
#else
#define quad_t int64_t
#endif
#include <errno.h>
#include <regex.h>
#include <limits.h>
#include <asterisk/ast_expr.h>
#include <asterisk/logger.h>
#ifdef LONG_LONG_MIN
#define QUAD_MIN LONG_LONG_MIN
#endif
#ifdef LONG_LONG_MAX
#define QUAD_MAX LONG_LONG_MAX
#endif
# if ! defined(QUAD_MIN)
# define QUAD_MIN (-0x7fffffffffffffffLL-1)
# endif
# if ! defined(QUAD_MAX)
# define QUAD_MAX (0x7fffffffffffffffLL)
# endif
#define YYPARSE_PARAM parseio
#define YYLEX_PARAM ((struct parse_io *)parseio)->scanner
#define YYERROR_VERBOSE 1
enum valtype {
AST_EXPR_integer, AST_EXPR_numeric_string, AST_EXPR_string
} ;
#ifdef STANDALONE
void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...) __attribute__ ((format (printf,5,6)));
#endif
struct val {
enum valtype type;
union {
char *s;
quad_t i;
} u;
} ;
typedef void *yyscan_t;
struct parse_io
{
char *string;
struct val *val;
yyscan_t scanner;
};
static int chk_div __P((quad_t, quad_t));
static int chk_minus __P((quad_t, quad_t, quad_t));
static int chk_plus __P((quad_t, quad_t, quad_t));
static int chk_times __P((quad_t, quad_t, quad_t));
static void free_value __P((struct val *));
static int is_zero_or_null __P((struct val *));
static int isstring __P((struct val *));
static struct val *make_integer __P((quad_t));
static struct val *make_str __P((const char *));
static struct val *op_and __P((struct val *, struct val *));
static struct val *op_colon __P((struct val *, struct val *));
static struct val *op_eqtilde __P((struct val *, struct val *));
static struct val *op_div __P((struct val *, struct val *));
static struct val *op_eq __P((struct val *, struct val *));
static struct val *op_ge __P((struct val *, struct val *));
static struct val *op_gt __P((struct val *, struct val *));
static struct val *op_le __P((struct val *, struct val *));
static struct val *op_lt __P((struct val *, struct val *));
static struct val *op_cond __P((struct val *, struct val *, struct val *));
static struct val *op_minus __P((struct val *, struct val *));
static struct val *op_negate __P((struct val *));
static struct val *op_compl __P((struct val *));
static struct val *op_ne __P((struct val *, struct val *));
static struct val *op_or __P((struct val *, struct val *));
static struct val *op_plus __P((struct val *, struct val *));
static struct val *op_rem __P((struct val *, struct val *));
static struct val *op_times __P((struct val *, struct val *));
static quad_t to_integer __P((struct val *));
static void to_string __P((struct val *));
/* uh, if I want to predeclare yylex with a YYLTYPE, I have to predeclare the yyltype... sigh */
typedef struct yyltype
{
int first_line;
int first_column;
int last_line;
int last_column;
} yyltype;
# define YYLTYPE yyltype
# define YYLTYPE_IS_TRIVIAL 1
/* we will get warning about no prototype for yylex! But we can't
define it here, we have no definition yet for YYSTYPE. */
int ast_yyerror(const char *,YYLTYPE *, struct parse_io *);
/* I wanted to add args to the yyerror routine, so I could print out
some useful info about the error. Not as easy as it looks, but it
is possible. */
#define ast_yyerror(x) ast_yyerror(x,&yyloc,parseio)
/* Enabling traces. */
#ifndef YYDEBUG
# define YYDEBUG 0
#endif
/* Enabling verbose error messages. */
#ifdef YYERROR_VERBOSE
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
# define YYERROR_VERBOSE 0
#endif
#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
#line 137 "ast_expr2.y"
typedef union YYSTYPE {
struct val *val;
} YYSTYPE;
/* Line 191 of yacc.c. */
#line 264 "ast_expr2.c"
# define yystype YYSTYPE /* obsolescent; will be withdrawn */
# define YYSTYPE_IS_DECLARED 1
# define YYSTYPE_IS_TRIVIAL 1
#endif
#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
typedef struct YYLTYPE
{
int first_line;
int first_column;
int last_line;
int last_column;
} YYLTYPE;
# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
# define YYLTYPE_IS_DECLARED 1
# define YYLTYPE_IS_TRIVIAL 1
#endif
/* Copy the second part of user declarations. */
#line 141 "ast_expr2.y"
extern int ast_yylex __P((YYSTYPE *, YYLTYPE *, yyscan_t));
/* Line 214 of yacc.c. */
#line 291 "ast_expr2.c"
#if ! defined (yyoverflow) || YYERROR_VERBOSE
# ifndef YYFREE
# define YYFREE free
# endif
# ifndef YYMALLOC
# define YYMALLOC malloc
# endif
/* The parser invokes alloca or malloc; define the necessary symbols. */
# ifdef YYSTACK_USE_ALLOCA
# if YYSTACK_USE_ALLOCA
# define YYSTACK_ALLOC alloca
# endif
# else
# if defined (alloca) || defined (_ALLOCA_H)
# define YYSTACK_ALLOC alloca
# else
# ifdef __GNUC__
# define YYSTACK_ALLOC __builtin_alloca
# endif
# endif
# endif
# ifdef YYSTACK_ALLOC
/* Pacify GCC's `empty if-body' warning. */
# define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
# else
# if defined (__STDC__) || defined (__cplusplus)
# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
# define YYSIZE_T size_t
# endif
# define YYSTACK_ALLOC YYMALLOC
# define YYSTACK_FREE YYFREE
# endif
#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */
#if (! defined (yyoverflow) \
&& (! defined (__cplusplus) \
|| (defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
&& defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))
/* A type that is properly aligned for any stack member. */
union yyalloc
{
short int yyss;
YYSTYPE yyvs;
YYLTYPE yyls;
};
/* The size of the maximum gap between one aligned stack and the next. */
# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
/* The size of an array large to enough to hold all stacks, each with
N elements. */
# define YYSTACK_BYTES(N) \
((N) * (sizeof (short int) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+ 2 * YYSTACK_GAP_MAXIMUM)
/* Copy COUNT objects from FROM to TO. The source and destination do
not overlap. */
# ifndef YYCOPY
# if defined (__GNUC__) && 1 < __GNUC__
# define YYCOPY(To, From, Count) \
__builtin_memcpy (To, From, (Count) * sizeof (*(From)))
# else
# define YYCOPY(To, From, Count) \
do \
{ \
register YYSIZE_T yyi; \
for (yyi = 0; yyi < (Count); yyi++) \
(To)[yyi] = (From)[yyi]; \
} \
while (0)
# endif
# endif
/* Relocate STACK from its old location to the new one. The
local variables YYSIZE and YYSTACKSIZE give the old and new number of
elements in the stack, and YYPTR gives the new location of the
stack. Advance YYPTR to a properly aligned location for the next
stack. */
# define YYSTACK_RELOCATE(Stack) \
do \
{ \
YYSIZE_T yynewbytes; \
YYCOPY (&yyptr->Stack, Stack, yysize); \
Stack = &yyptr->Stack; \
yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
yyptr += yynewbytes / sizeof (*yyptr); \
} \
while (0)
#endif
#if defined (__STDC__) || defined (__cplusplus)
typedef signed char yysigned_char;
#else
typedef short int yysigned_char;
#endif
/* YYFINAL -- State number of the termination state. */
#define YYFINAL 10
/* YYLAST -- Last index in YYTABLE. */
#define YYLAST 140
/* YYNTOKENS -- Number of terminals. */
#define YYNTOKENS 24
/* YYNNTS -- Number of nonterminals. */
#define YYNNTS 3
/* YYNRULES -- Number of rules. */
#define YYNRULES 22
/* YYNRULES -- Number of states. */
#define YYNSTATES 46
/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
#define YYUNDEFTOK 2
#define YYMAXUTOK 278
#define YYTRANSLATE(YYX) \
((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
static const unsigned 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
/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
YYRHS. */
static const unsigned char yyprhs[] =
{
0, 0, 3, 5, 7, 11, 15, 19, 23, 27,
31, 35, 39, 43, 47, 51, 54, 57, 61, 65,
69, 73, 77
};
/* YYRHS -- A `-1'-separated list of the rules' RHS. */
static const yysigned_char yyrhs[] =
{
25, 0, -1, 26, -1, 23, -1, 21, 26, 22,
-1, 26, 5, 26, -1, 26, 6, 26, -1, 26,
12, 26, -1, 26, 11, 26, -1, 26, 10, 26,
-1, 26, 9, 26, -1, 26, 8, 26, -1, 26,
7, 26, -1, 26, 14, 26, -1, 26, 13, 26,
-1, 13, 26, -1, 18, 26, -1, 26, 17, 26,
-1, 26, 16, 26, -1, 26, 15, 26, -1, 26,
20, 26, -1, 26, 19, 26, -1, 26, 4, 26,
3, 26, -1
};
/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
static const unsigned char yyrline[] =
{
0, 160, 160, 168, 169, 172, 175, 178, 181, 184,
187, 190, 193, 196, 199, 202, 205, 208, 211, 214,
217, 220, 223
};
#endif
#if YYDEBUG || YYERROR_VERBOSE
/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
First, the terminals, then, starting at YYNTOKENS, nonterminals. */
static const char *const yytname[] =
{
"$end", "error", "$undefined", "TOK_COLONCOLON", "TOK_COND", "TOK_OR",
"TOK_AND", "TOK_NE", "TOK_LE", "TOK_GE", "TOK_LT", "TOK_GT", "TOK_EQ",
"TOK_MINUS", "TOK_PLUS", "TOK_MOD", "TOK_DIV", "TOK_MULT", "TOK_COMPL",
"TOK_EQTILDE", "TOK_COLON", "TOK_LP", "TOK_RP", "TOKEN", "$accept",
"start", "expr", 0
};
#endif
# ifdef YYPRINT
/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
token YYLEX-NUM. */
static const unsigned short int yytoknum[] =
{
0, 256, 257, 258, 259, 260, 261, 262, 263, 264,
265, 266, 267, 268, 269, 270, 271, 272, 273, 274,
275, 276, 277, 278
};
# endif
/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
static const unsigned char yyr1[] =
{
0, 24, 25, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26
};
/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
static const unsigned char yyr2[] =
{
0, 2, 1, 1, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 2, 2, 3, 3, 3,
3, 3, 5
};
/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
STATE-NUM when YYTABLE doesn't specify something else to do. Zero
means the default is an error. */
static const unsigned char yydefact[] =
{
0, 0, 0, 0, 3, 0, 2, 15, 16, 0,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 4, 0, 5,
6, 12, 11, 10, 9, 8, 7, 14, 13, 19,
18, 17, 21, 20, 0, 22
};
/* YYDEFGOTO[NTERM-NUM]. */
static const yysigned_char yydefgoto[] =
{
-1, 5, 6
};
/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
STATE-NUM. */
#define YYPACT_NINF -13
static const yysigned_char yypact[] =
{
109, 109, 109, 109, -13, 6, 59, 106, 106, 22,
-13, 109, 109, 109, 109, 109, 109, 109, 109, 109,
109, 109, 109, 109, 109, 109, 109, -13, 42, 90,
104, 120, 120, 120, 120, 120, 120, -12, -12, 106,
106, 106, -13, -13, 109, 75
};
/* YYPGOTO[NTERM-NUM]. */
static const yysigned_char yypgoto[] =
{
-13, -13, -1
};
/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
positive, shift that token. If negative, reduce the rule which
number is the opposite. If zero, do what YYDEFACT says.
If YYTABLE_NINF, syntax error. */
#define YYTABLE_NINF -1
static const unsigned char yytable[] =
{
7, 8, 9, 22, 23, 24, 10, 25, 26, 0,
28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
38, 39, 40, 41, 42, 43, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
0, 25, 26, 45, 27, 44, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
0, 25, 26, 11, 12, 13, 14, 15, 16, 17,
18, 19, 20, 21, 22, 23, 24, 0, 25, 26,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23, 24, 0, 25, 26, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 0, 25,
26, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 1, 25, 26, 25, 26, 2, 0, 0,
3, 0, 4, 20, 21, 22, 23, 24, 0, 25,
26
};
static const yysigned_char yycheck[] =
{
1, 2, 3, 15, 16, 17, 0, 19, 20, -1,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
-1, 19, 20, 44, 22, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
-1, 19, 20, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, -1, 19, 20,
5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, -1, 19, 20, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17, -1, 19,
20, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 13, 19, 20, 19, 20, 18, -1, -1,
21, -1, 23, 13, 14, 15, 16, 17, -1, 19,
20
};
/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
symbol of state STATE-NUM. */
static const unsigned char yystos[] =
{
0, 13, 18, 21, 23, 25, 26, 26, 26, 26,
0, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 19, 20, 22, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 3, 26
};
#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
# define YYSIZE_T __SIZE_TYPE__
#endif
#if ! defined (YYSIZE_T) && defined (size_t)
# define YYSIZE_T size_t
#endif
#if ! defined (YYSIZE_T)
# if defined (__STDC__) || defined (__cplusplus)
# include <stddef.h> /* INFRINGES ON USER NAME SPACE */
# define YYSIZE_T size_t
# endif
#endif
#if ! defined (YYSIZE_T)
# define YYSIZE_T unsigned int
#endif
#define yyerrok (yyerrstatus = 0)
#define yyclearin (yychar = YYEMPTY)
#define YYEMPTY (-2)
#define YYEOF 0
#define YYACCEPT goto yyacceptlab
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrorlab
/* 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); \
yytoken = YYTRANSLATE (yychar); \
YYPOPSTACK; \
goto yybackup; \
} \
else \
{ \
yyerror ("syntax error: cannot back up");\
YYERROR; \
} \
while (0)
#define YYTERROR 1
#define YYERRCODE 256
/* YYLLOC_DEFAULT -- Compute the default location (before the actions
are run). */
#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N) \
((Current).first_line = (Rhs)[1].first_line, \
(Current).first_column = (Rhs)[1].first_column, \
(Current).last_line = (Rhs)[N].last_line, \
(Current).last_column = (Rhs)[N].last_column)
#endif
/* YYLEX -- calling `yylex' with the right arguments. */
#ifdef YYLEX_PARAM
# define YYLEX yylex (&yylval, &yylloc, YYLEX_PARAM)
#else
# define YYLEX yylex (&yylval, &yylloc)
#endif
/* Enable debugging if requested. */
#if YYDEBUG
# ifndef YYFPRINTF
# include <stdio.h> /* INFRINGES ON USER NAME SPACE */
# define YYFPRINTF fprintf
# endif
# define YYDPRINTF(Args) \
do { \
if (yydebug) \
YYFPRINTF Args; \
} while (0)
# define YYDSYMPRINT(Args) \
do { \
if (yydebug) \
yysymprint Args; \
} while (0)
# define YYDSYMPRINTF(Title, Token, Value, Location) \
do { \
if (yydebug) \
{ \
YYFPRINTF (stderr, "%s ", Title); \
yysymprint (stderr, \
Token, Value, Location); \
YYFPRINTF (stderr, "\n"); \
} \
} while (0)
/*------------------------------------------------------------------.
| yy_stack_print -- Print the state stack from its BOTTOM up to its |
| TOP (included). |
`------------------------------------------------------------------*/
#if defined (__STDC__) || defined (__cplusplus)
static void
yy_stack_print (short int *bottom, short int *top)
#else
static void
yy_stack_print (bottom, top)
short int *bottom;
short int *top;
#endif
{
YYFPRINTF (stderr, "Stack now");
for (/* Nothing. */; bottom <= top; ++bottom)
YYFPRINTF (stderr, " %d", *bottom);
YYFPRINTF (stderr, "\n");
}
# define YY_STACK_PRINT(Bottom, Top) \
do { \
if (yydebug) \
yy_stack_print ((Bottom), (Top)); \
} while (0)
/*------------------------------------------------.
| Report that the YYRULE is going to be reduced. |
`------------------------------------------------*/
#if defined (__STDC__) || defined (__cplusplus)
static void
yy_reduce_print (int yyrule)
#else
static void
yy_reduce_print (yyrule)
int yyrule;
#endif
{
int yyi;
unsigned int yylno = yyrline[yyrule];
YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
yyrule - 1, yylno);
/* Print the symbols being reduced, and their result. */
for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
}
# define YY_REDUCE_PRINT(Rule) \
do { \
if (yydebug) \
yy_reduce_print (Rule); \
} while (0)
/* Nonzero means print parse trace. It is left uninitialized so that
multiple parsers can coexist. */
int yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
# define YYDSYMPRINT(Args)
# define YYDSYMPRINTF(Title, Token, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
#endif /* !YYDEBUG */
/* YYINITDEPTH -- initial size of the parser's stacks. */
#ifndef YYINITDEPTH
# define YYINITDEPTH 200
#endif
/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
if the built-in stack extension method is used).
Do not make this value too large; the results are undefined if
SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
evaluated with infinite-precision integer arithmetic. */
#if defined (YYMAXDEPTH) && YYMAXDEPTH == 0
# undef YYMAXDEPTH
#endif
#ifndef YYMAXDEPTH
# define YYMAXDEPTH 10000
#endif
#if YYERROR_VERBOSE
# ifndef yystrlen
# if defined (__GLIBC__) && defined (_STRING_H)
# define yystrlen strlen
# else
/* Return the length of YYSTR. */
static YYSIZE_T
# if defined (__STDC__) || defined (__cplusplus)
yystrlen (const char *yystr)
# else
yystrlen (yystr)
const char *yystr;
# endif
{
register const char *yys = yystr;
while (*yys++ != '\0')
continue;
return yys - yystr - 1;
}
# endif
# endif
# ifndef yystpcpy
# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
# define yystpcpy stpcpy
# else
/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
YYDEST. */
static char *
# if defined (__STDC__) || defined (__cplusplus)
yystpcpy (char *yydest, const char *yysrc)
# else
yystpcpy (yydest, yysrc)
char *yydest;
const char *yysrc;
# endif
{
register char *yyd = yydest;
register const char *yys = yysrc;
while ((*yyd++ = *yys++) != '\0')
continue;
return yyd - 1;
}
# endif
# endif
#endif /* !YYERROR_VERBOSE */
#if YYDEBUG
/*--------------------------------.
| Print this symbol on YYOUTPUT. |
`--------------------------------*/
#if defined (__STDC__) || defined (__cplusplus)
static void
yysymprint (FILE *yyoutput, int yytype, YYSTYPE *yyvaluep, YYLTYPE *yylocationp)
#else
static void
yysymprint (yyoutput, yytype, yyvaluep, yylocationp)
FILE *yyoutput;
int yytype;
YYSTYPE *yyvaluep;
YYLTYPE *yylocationp;
#endif
{
/* Pacify ``unused variable'' warnings. */
(void) yyvaluep;
(void) yylocationp;
if (yytype < YYNTOKENS)
{
YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
# ifdef YYPRINT
YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
# endif
}
else
YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
switch (yytype)
{
default:
break;
}
YYFPRINTF (yyoutput, ")");
}
#endif /* ! YYDEBUG */
/*-----------------------------------------------.
| Release the memory associated to this symbol. |
`-----------------------------------------------*/
#if defined (__STDC__) || defined (__cplusplus)
static void
yydestruct (int yytype, YYSTYPE *yyvaluep, YYLTYPE *yylocationp)
#else
static void
yydestruct (yytype, yyvaluep, yylocationp)
int yytype;
YYSTYPE *yyvaluep;
YYLTYPE *yylocationp;
#endif
{
/* Pacify ``unused variable'' warnings. */
(void) yyvaluep;
(void) yylocationp;
switch (yytype)
{
default:
break;
}
}
/* Prevent warnings from -Wmissing-prototypes. */
#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int yyparse (void *YYPARSE_PARAM);
# else
int yyparse ();
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int yyparse (void);
#else
int yyparse ();
#endif
#endif /* ! YYPARSE_PARAM */
/*----------.
| yyparse. |
`----------*/
#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int yyparse (void *YYPARSE_PARAM)
# else
int yyparse (YYPARSE_PARAM)
void *YYPARSE_PARAM;
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int
yyparse (void)
#else
int
yyparse ()
#endif
#endif
{
/* The lookahead symbol. */
int yychar;
/* The semantic value of the lookahead symbol. */
YYSTYPE yylval;
/* Number of syntax errors so far. */
int yynerrs;
/* Location data for the lookahead symbol. */
YYLTYPE yylloc;
register int yystate;
register int yyn;
int yyresult;
/* Number of tokens to shift before error messages enabled. */
int yyerrstatus;
/* Lookahead token as an internal (translated) token number. */
int yytoken = 0;
/* Three stacks and their tools:
`yyss': related to states,
`yyvs': related to semantic values,
`yyls': related to locations.
Refer to the stacks thru separate pointers, to allow yyoverflow
to reallocate them elsewhere. */
/* The state stack. */
short int yyssa[YYINITDEPTH];
short int *yyss = yyssa;
register short int *yyssp;
/* The semantic value stack. */
YYSTYPE yyvsa[YYINITDEPTH];
YYSTYPE *yyvs = yyvsa;
register YYSTYPE *yyvsp;
/* The location stack. */
YYLTYPE yylsa[YYINITDEPTH];
YYLTYPE *yyls = yylsa;
YYLTYPE *yylsp;
YYLTYPE *yylerrsp;
#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
YYSIZE_T yystacksize = YYINITDEPTH;
/* The variables used to return semantic value and location from the
action routines. */
YYSTYPE yyval;
YYLTYPE yyloc;
/* When reducing, the number of symbols on the RHS of the reduced
rule. */
int yylen;
YYDPRINTF ((stderr, "Starting parse\n"));
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;
yyvsp = yyvs;
yylsp = yyls;
goto yysetstate;
/*------------------------------------------------------------.
| yynewstate -- Push a new state, which is found in yystate. |
`------------------------------------------------------------*/
yynewstate:
/* In all cases, when you get here, the value and location stacks
have just been pushed. so pushing a state here evens the stacks.
*/
yyssp++;
yysetstate:
*yyssp = yystate;
if (yyss + yystacksize - 1 <= yyssp)
{
/* Get the current used size of the three stacks, in elements. */
YYSIZE_T yysize = yyssp - yyss + 1;
#ifdef yyoverflow
{
/* 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 int *yyss1 = yyss;
YYLTYPE *yyls1 = yyls;
/* Each stack pointer address is followed by the size of the
data in use in that stack, in bytes. 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, yysize * sizeof (*yyssp),
&yyvs1, yysize * sizeof (*yyvsp),
&yyls1, yysize * sizeof (*yylsp),
&yystacksize);
yyls = yyls1;
yyss = yyss1;
yyvs = yyvs1;
}
#else /* no yyoverflow */
# ifndef YYSTACK_RELOCATE
goto yyoverflowlab;
# else
/* Extend the stack our own way. */
if (YYMAXDEPTH <= yystacksize)
goto yyoverflowlab;
yystacksize *= 2;
if (YYMAXDEPTH < yystacksize)
yystacksize = YYMAXDEPTH;
{
short int *yyss1 = yyss;
union yyalloc *yyptr =
(union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
if (! yyptr)
goto yyoverflowlab;
YYSTACK_RELOCATE (yyss);
YYSTACK_RELOCATE (yyvs);
YYSTACK_RELOCATE (yyls);
# undef YYSTACK_RELOCATE
if (yyss1 != yyssa)
YYSTACK_FREE (yyss1);
}
# endif
#endif /* no yyoverflow */
yyssp = yyss + yysize - 1;
yyvsp = yyvs + yysize - 1;
yylsp = yyls + yysize - 1;
YYDPRINTF ((stderr, "Stack size increased to %lu\n",
(unsigned long int) yystacksize));
if (yyss + yystacksize - 1 <= yyssp)
YYABORT;
}
YYDPRINTF ((stderr, "Entering state %d\n", yystate));
goto yybackup;
/*-----------.
| yybackup. |
`-----------*/
yybackup:
/* Do appropriate processing given the current state. */
/* Read a lookahead token if we need one and don't already have one. */
/* yyresume: */
/* First try to decide what to do without reference to lookahead token. */
yyn = yypact[yystate];
if (yyn == YYPACT_NINF)
goto yydefault;
/* Not known => get a lookahead token if don't already have one. */
/* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
if (yychar == YYEMPTY)
{
YYDPRINTF ((stderr, "Reading a token: "));
yychar = YYLEX;
}
if (yychar <= YYEOF)
{
yychar = yytoken = YYEOF;
YYDPRINTF ((stderr, "Now at end of input.\n"));
}
else
{
yytoken = YYTRANSLATE (yychar);
YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);
}
/* If the proper action on seeing token YYTOKEN is to reduce or to
detect an error, take that action. */
yyn += yytoken;
if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
goto yydefault;
yyn = yytable[yyn];
if (yyn <= 0)
{
if (yyn == 0 || yyn == YYTABLE_NINF)
goto yyerrlab;
yyn = -yyn;
goto yyreduce;
}
if (yyn == YYFINAL)
YYACCEPT;
/* Shift the lookahead token. */
YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));
/* Discard the token being shifted unless it is eof. */
if (yychar != YYEOF)
yychar = YYEMPTY;
*++yyvsp = yylval;
*++yylsp = yylloc;
/* Count tokens shifted since error; after three, turn off error
status. */
if (yyerrstatus)
yyerrstatus--;
yystate = yyn;
goto yynewstate;
/*-----------------------------------------------------------.
| yydefault -- do the default action for the current state. |
`-----------------------------------------------------------*/
yydefault:
yyn = yydefact[yystate];
if (yyn == 0)
goto yyerrlab;
goto yyreduce;
/*-----------------------------.
| yyreduce -- Do a reduction. |
`-----------------------------*/
yyreduce:
/* yyn is the number of a rule to reduce with. */
yylen = yyr2[yyn];
/* If YYLEN is nonzero, implement the default value of the action:
`$$ = $1'.
Otherwise, the following line sets YYVAL to garbage.
This behavior is undocumented and Bison
users should not rely upon it. Assigning to YYVAL
unconditionally makes the parser a bit smaller, and it avoids a
GCC warning that YYVAL may be used uninitialized. */
yyval = yyvsp[1-yylen];
/* Default location. */
YYLLOC_DEFAULT (yyloc, yylsp - yylen, yylen);
YY_REDUCE_PRINT (yyn);
switch (yyn)
{
case 2:
#line 160 "ast_expr2.y"
{ ((struct parse_io *)parseio)->val = (struct val *)calloc(sizeof(struct val),1);
((struct parse_io *)parseio)->val->type = yyval.val->type;
if( yyval.val->type == AST_EXPR_integer )
((struct parse_io *)parseio)->val->u.i = yyval.val->u.i;
else
((struct parse_io *)parseio)->val->u.s = yyval.val->u.s; ;}
break;
case 3:
#line 168 "ast_expr2.y"
{ yyval.val= yyvsp[0].val;;}
break;
case 4:
#line 169 "ast_expr2.y"
{ yyval.val = yyvsp[-1].val;
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 5:
#line 172 "ast_expr2.y"
{ yyval.val = op_or (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 6:
#line 175 "ast_expr2.y"
{ yyval.val = op_and (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 7:
#line 178 "ast_expr2.y"
{ yyval.val = op_eq (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 8:
#line 181 "ast_expr2.y"
{ yyval.val = op_gt (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 9:
#line 184 "ast_expr2.y"
{ yyval.val = op_lt (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 10:
#line 187 "ast_expr2.y"
{ yyval.val = op_ge (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 11:
#line 190 "ast_expr2.y"
{ yyval.val = op_le (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 12:
#line 193 "ast_expr2.y"
{ yyval.val = op_ne (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 13:
#line 196 "ast_expr2.y"
{ yyval.val = op_plus (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 14:
#line 199 "ast_expr2.y"
{ yyval.val = op_minus (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 15:
#line 202 "ast_expr2.y"
{ yyval.val = op_negate (yyvsp[0].val);
yyloc.first_column = yylsp[-1].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 16:
#line 205 "ast_expr2.y"
{ yyval.val = op_compl (yyvsp[0].val);
yyloc.first_column = yylsp[-1].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 17:
#line 208 "ast_expr2.y"
{ yyval.val = op_times (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 18:
#line 211 "ast_expr2.y"
{ yyval.val = op_div (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 19:
#line 214 "ast_expr2.y"
{ yyval.val = op_rem (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 20:
#line 217 "ast_expr2.y"
{ yyval.val = op_colon (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 21:
#line 220 "ast_expr2.y"
{ yyval.val = op_eqtilde (yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-2].first_column; yyloc.last_column = yylsp[0].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
case 22:
#line 223 "ast_expr2.y"
{ yyval.val = op_cond (yyvsp[-4].val, yyvsp[-2].val, yyvsp[0].val);
yyloc.first_column = yylsp[-4].first_column; yyloc.last_column = yylsp[-2].last_column;
yyloc.first_line=0; yyloc.last_line=0;;}
break;
}
/* Line 1010 of yacc.c. */
#line 1384 "ast_expr2.c"
yyvsp -= yylen;
yyssp -= yylen;
yylsp -= yylen;
YY_STACK_PRINT (yyss, yyssp);
*++yyvsp = yyval;
*++yylsp = yyloc;
/* Now `shift' the result of the reduction. Determine what state
that goes to, based on the state we popped back to and the rule
number reduced by. */
yyn = yyr1[yyn];
yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
yystate = yytable[yystate];
else
yystate = yydefgoto[yyn - YYNTOKENS];
goto yynewstate;
/*------------------------------------.
| yyerrlab -- here on detecting error |
`------------------------------------*/
yyerrlab:
/* If not already recovering from an error, report this error. */
if (!yyerrstatus)
{
++yynerrs;
#if YYERROR_VERBOSE
yyn = yypact[yystate];
if (YYPACT_NINF < yyn && yyn < YYLAST)
{
YYSIZE_T yysize = 0;
int yytype = YYTRANSLATE (yychar);
const char* yyprefix;
char *yymsg;
int yyx;
/* Start YYX at -YYN if negative to avoid negative indexes in
YYCHECK. */
int yyxbegin = yyn < 0 ? -yyn : 0;
/* Stay within bounds of both yycheck and yytname. */
int yychecklim = YYLAST - yyn;
int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
int yycount = 0;
yyprefix = ", expecting ";
for (yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
{
yysize += yystrlen (yyprefix) + yystrlen (yytname [yyx]);
yycount += 1;
if (yycount == 5)
{
yysize = 0;
break;
}
}
yysize += (sizeof ("syntax error, unexpected ")
+ yystrlen (yytname[yytype]));
yymsg = (char *) YYSTACK_ALLOC (yysize);
if (yymsg != 0)
{
char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");
yyp = yystpcpy (yyp, yytname[yytype]);
if (yycount < 5)
{
yyprefix = ", expecting ";
for (yyx = yyxbegin; yyx < yyxend; ++yyx)
if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
{
yyp = yystpcpy (yyp, yyprefix);
yyp = yystpcpy (yyp, yytname[yyx]);
yyprefix = " or ";
}
}
yyerror (yymsg);
YYSTACK_FREE (yymsg);
}
else
yyerror ("syntax error; also virtual memory exhausted");
}
else
#endif /* YYERROR_VERBOSE */
yyerror ("syntax error");
}
yylerrsp = yylsp;
if (yyerrstatus == 3)
{
/* If just tried and failed to reuse lookahead token after an
error, discard it. */
if (yychar <= YYEOF)
{
/* If at end of input, pop the error token,
then the rest of the stack, then return failure. */
if (yychar == YYEOF)
for (;;)
{
YYPOPSTACK;
if (yyssp == yyss)
YYABORT;
YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
yydestruct (yystos[*yyssp], yyvsp, yylsp);
}
}
else
{
YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
yydestruct (yytoken, &yylval, &yylloc);
yychar = YYEMPTY;
*++yylerrsp = yylloc;
}
}
/* Else will try to reuse lookahead token after shifting the error
token. */
goto yyerrlab1;
/*---------------------------------------------------.
| yyerrorlab -- error raised explicitly by YYERROR. |
`---------------------------------------------------*/
yyerrorlab:
#ifdef __GNUC__
/* Pacify GCC when the user code never invokes YYERROR and the label
yyerrorlab therefore never appears in user code. */
if (0)
goto yyerrorlab;
#endif
yyvsp -= yylen;
yyssp -= yylen;
yystate = *yyssp;
yylerrsp = yylsp;
*++yylerrsp = yyloc;
yylsp -= yylen;
goto yyerrlab1;
/*-------------------------------------------------------------.
| yyerrlab1 -- common code for both syntax error and YYERROR. |
`-------------------------------------------------------------*/
yyerrlab1:
yyerrstatus = 3; /* Each real token shifted decrements this. */
for (;;)
{
yyn = yypact[yystate];
if (yyn != YYPACT_NINF)
{
yyn += YYTERROR;
if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
{
yyn = yytable[yyn];
if (0 < yyn)
break;
}
}
/* Pop the current state because it cannot handle the error token. */
if (yyssp == yyss)
YYABORT;
YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
yydestruct (yystos[yystate], yyvsp, yylsp);
YYPOPSTACK;
yystate = *yyssp;
YY_STACK_PRINT (yyss, yyssp);
}
if (yyn == YYFINAL)
YYACCEPT;
YYDPRINTF ((stderr, "Shifting error token, "));
*++yyvsp = yylval;
YYLLOC_DEFAULT (yyloc, yylsp, yylerrsp - yylsp);
*++yylsp = yyloc;
yystate = yyn;
goto yynewstate;
/*-------------------------------------.
| yyacceptlab -- YYACCEPT comes here. |
`-------------------------------------*/
yyacceptlab:
yyresult = 0;
goto yyreturn;
/*-----------------------------------.
| yyabortlab -- YYABORT comes here. |
`-----------------------------------*/
yyabortlab:
yyresult = 1;
goto yyreturn;
#ifndef yyoverflow
/*----------------------------------------------.
| yyoverflowlab -- parser overflow comes here. |
`----------------------------------------------*/
yyoverflowlab:
yyerror ("parser stack overflow");
yyresult = 2;
/* Fall through. */
#endif
yyreturn:
#ifndef yyoverflow
if (yyss != yyssa)
YYSTACK_FREE (yyss);
#endif
return yyresult;
}
#line 228 "ast_expr2.y"
static struct val *
make_integer (quad_t i)
{
struct val *vp;
vp = (struct val *) malloc (sizeof (*vp));
if (vp == NULL) {
ast_log(LOG_WARNING, "malloc() failed\n");
return(NULL);
}
vp->type = AST_EXPR_integer;
vp->u.i = i;
return vp;
}
static struct val *
make_str (const char *s)
{
struct val *vp;
size_t i;
int isint;
vp = (struct val *) malloc (sizeof (*vp));
if (vp == NULL || ((vp->u.s = strdup (s)) == NULL)) {
ast_log(LOG_WARNING,"malloc() failed\n");
return(NULL);
}
for(i = 1, isint = isdigit(s[0]) || s[0] == '-';
isint && i < strlen(s);
i++)
{
if(!isdigit(s[i]))
isint = 0;
}
if (isint)
vp->type = AST_EXPR_numeric_string;
else
vp->type = AST_EXPR_string;
return vp;
}
static void
free_value (struct val *vp)
{
if (vp==NULL) {
return;
}
if (vp->type == AST_EXPR_string || vp->type == AST_EXPR_numeric_string)
free (vp->u.s);
}
static quad_t
to_integer (struct val *vp)
{
quad_t i;
if (vp == NULL) {
ast_log(LOG_WARNING,"vp==NULL in to_integer()\n");
return(0);
}
if (vp->type == AST_EXPR_integer)
return 1;
if (vp->type == AST_EXPR_string)
return 0;
/* vp->type == AST_EXPR_numeric_string, make it numeric */
errno = 0;
i = strtoll(vp->u.s, (char**)NULL, 10);
if (errno != 0) {
ast_log(LOG_WARNING,"Conversion of %s to integer under/overflowed!\n", vp->u.s);
free(vp->u.s);
vp->u.s = 0;
return(0);
}
free (vp->u.s);
vp->u.i = i;
vp->type = AST_EXPR_integer;
return 1;
}
static void
strip_quotes(struct val *vp)
{
if (vp->type != AST_EXPR_string && vp->type != AST_EXPR_numeric_string)
return;
if( vp->u.s[0] == '"' && vp->u.s[strlen(vp->u.s)-1] == '"' )
{
char *f, *t;
f = vp->u.s;
t = vp->u.s;
while( *f )
{
if( *f && *f != '"' )
*t++ = *f++;
else
f++;
}
*t = *f;
}
}
static void
to_string (struct val *vp)
{
char *tmp;
if (vp->type == AST_EXPR_string || vp->type == AST_EXPR_numeric_string)
return;
tmp = malloc ((size_t)25);
if (tmp == NULL) {
ast_log(LOG_WARNING,"malloc() failed\n");
return;
}
sprintf(tmp, "%ld", (long int) vp->u.i);
vp->type = AST_EXPR_string;
vp->u.s = tmp;
}
static int
isstring (struct val *vp)
{
/* only TRUE if this string is not a valid integer */
return (vp->type == AST_EXPR_string);
}
static int
is_zero_or_null (struct val *vp)
{
if (vp->type == AST_EXPR_integer) {
return (vp->u.i == 0);
} else {
return (*vp->u.s == 0 || (to_integer (vp) && vp->u.i == 0));
}
/* NOTREACHED */
}
#ifdef STANDALONE
void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
{
va_list vars;
va_start(vars,fmt);
printf("LOG: lev:%d file:%s line:%d func: %s ",
level, file, line, function);
vprintf(fmt, vars);
fflush(stdout);
va_end(vars);
}
int main(int argc,char **argv) {
char s[4096];
if (ast_expr(argv[1], s, sizeof(s)))
printf("=====%s======\n",s);
else
printf("No result\n");
}
#endif
#undef ast_yyerror
#define ast_yyerror(x) ast_yyerror(x, YYLTYPE *yylloc, struct parse_io *parseio)
/* I put the ast_yyerror func in the flex input file,
because it refers to the buffer state. Best to
let it access the BUFFER stuff there and not trying
define all the structs, macros etc. in this file! */
static struct val *
op_or (struct val *a, struct val *b)
{
if (is_zero_or_null (a)) {
free_value (a);
return (b);
} else {
free_value (b);
return (a);
}
}
static struct val *
op_and (struct val *a, struct val *b)
{
if (is_zero_or_null (a) || is_zero_or_null (b)) {
free_value (a);
free_value (b);
return (make_integer ((quad_t)0));
} else {
free_value (b);
return (a);
}
}
static struct val *
op_eq (struct val *a, struct val *b)
{
struct val *r;
if (isstring (a) || isstring (b)) {
to_string (a);
to_string (b);
r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) == 0));
} else {
#ifdef DEBUG_FOR_CONVERSIONS
char buffer[2000];
sprintf(buffer,"Converting '%s' and '%s' ", a->u.s, b->u.s);
#endif
(void)to_integer(a);
(void)to_integer(b);
#ifdef DEBUG_FOR_CONVERSIONS
ast_log(LOG_WARNING,"%s to '%lld' and '%lld'\n", buffer, a->u.i, b->u.i);
#endif
r = make_integer ((quad_t)(a->u.i == b->u.i));
}
free_value (a);
free_value (b);
return r;
}
static struct val *
op_gt (struct val *a, struct val *b)
{
struct val *r;
if (isstring (a) || isstring (b)) {
to_string (a);
to_string (b);
r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) > 0));
} else {
(void)to_integer(a);
(void)to_integer(b);
r = make_integer ((quad_t)(a->u.i > b->u.i));
}
free_value (a);
free_value (b);
return r;
}
static struct val *
op_lt (struct val *a, struct val *b)
{
struct val *r;
if (isstring (a) || isstring (b)) {
to_string (a);
to_string (b);
r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) < 0));
} else {
(void)to_integer(a);
(void)to_integer(b);
r = make_integer ((quad_t)(a->u.i < b->u.i));
}
free_value (a);
free_value (b);
return r;
}
static struct val *
op_ge (struct val *a, struct val *b)
{
struct val *r;
if (isstring (a) || isstring (b)) {
to_string (a);
to_string (b);
r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) >= 0));
} else {
(void)to_integer(a);
(void)to_integer(b);
r = make_integer ((quad_t)(a->u.i >= b->u.i));
}
free_value (a);
free_value (b);
return r;
}
static struct val *
op_le (struct val *a, struct val *b)
{
struct val *r;
if (isstring (a) || isstring (b)) {
to_string (a);
to_string (b);
r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) <= 0));
} else {
(void)to_integer(a);
(void)to_integer(b);
r = make_integer ((quad_t)(a->u.i <= b->u.i));
}
free_value (a);
free_value (b);
return r;
}
static struct val *
op_cond (struct val *a, struct val *b, struct val *c)
{
struct val *r;
if( isstring(a) )
{
if( strlen(a->u.s) && strcmp(a->u.s, "\"\"") != 0 && strcmp(a->u.s,"0") != 0 )
{
free_value(a);
free_value(c);
r = b;
}
else
{
free_value(a);
free_value(b);
r = c;
}
}
else
{
(void)to_integer(a);
if( a->u.i )
{
free_value(a);
free_value(c);
r = b;
}
else
{
free_value(a);
free_value(b);
r = c;
}
}
return r;
}
static struct val *
op_ne (struct val *a, struct val *b)
{
struct val *r;
if (isstring (a) || isstring (b)) {
to_string (a);
to_string (b);
r = make_integer ((quad_t)(strcoll (a->u.s, b->u.s) != 0));
} else {
(void)to_integer(a);
(void)to_integer(b);
r = make_integer ((quad_t)(a->u.i != b->u.i));
}
free_value (a);
free_value (b);
return r;
}
static int
chk_plus (quad_t a, quad_t b, quad_t r)
{
/* sum of two positive numbers must be positive */
if (a > 0 && b > 0 && r <= 0)
return 1;
/* sum of two negative numbers must be negative */
if (a < 0 && b < 0 && r >= 0)
return 1;
/* all other cases are OK */
return 0;
}
static struct val *
op_plus (struct val *a, struct val *b)
{
struct val *r;
if (!to_integer (a)) {
ast_log(LOG_WARNING,"non-numeric argument\n");
if (!to_integer (b)) {
free_value(a);
free_value(b);
return make_integer(0);
} else {
free_value(a);
return (b);
}
} else if (!to_integer(b)) {
free_value(b);
return (a);
}
r = make_integer (/*(quad_t)*/(a->u.i + b->u.i));
if (chk_plus (a->u.i, b->u.i, r->u.i)) {
ast_log(LOG_WARNING,"overflow\n");
}
free_value (a);
free_value (b);
return r;
}
static int
chk_minus (quad_t a, quad_t b, quad_t r)
{
/* special case subtraction of QUAD_MIN */
if (b == QUAD_MIN) {
if (a >= 0)
return 1;
else
return 0;
}
/* this is allowed for b != QUAD_MIN */
return chk_plus (a, -b, r);
}
static struct val *
op_minus (struct val *a, struct val *b)
{
struct val *r;
if (!to_integer (a)) {
ast_log(LOG_WARNING, "non-numeric argument\n");
if (!to_integer (b)) {
free_value(a);
free_value(b);
return make_integer(0);
} else {
r = make_integer(0 - b->u.i);
free_value(a);
free_value(b);
return (r);
}
} else if (!to_integer(b)) {
ast_log(LOG_WARNING, "non-numeric argument\n");
free_value(b);
return (a);
}
r = make_integer (/*(quad_t)*/(a->u.i - b->u.i));
if (chk_minus (a->u.i, b->u.i, r->u.i)) {
ast_log(LOG_WARNING, "overflow\n");
}
free_value (a);
free_value (b);
return r;
}
static struct val *
op_negate (struct val *a)
{
struct val *r;
if (!to_integer (a) ) {
free_value(a);
ast_log(LOG_WARNING, "non-numeric argument\n");
return make_integer(0);
}
r = make_integer (/*(quad_t)*/(- a->u.i));
if (chk_minus (0, a->u.i, r->u.i)) {
ast_log(LOG_WARNING, "overflow\n");
}
free_value (a);
return r;
}
static struct val *
op_compl (struct val *a)
{
int v1 = 1;
struct val *r;
if( !a )
{
v1 = 0;
}
else
{
switch( a->type )
{
case AST_EXPR_integer:
if( a->u.i == 0 )
v1 = 0;
break;
case AST_EXPR_string:
if( a->u.s == 0 )
v1 = 0;
else
{
if( a->u.s[0] == 0 )
v1 = 0;
else if (strlen(a->u.s) == 1 && a->u.s[0] == '0' )
v1 = 0;
}
break;
case AST_EXPR_numeric_string:
if( a->u.s == 0 )
v1 = 0;
else
{
if( a->u.s[0] == 0 )
v1 = 0;
else if (strlen(a->u.s) == 1 && a->u.s[0] == '0' )
v1 = 0;
}
break;
}
}
r = make_integer (!v1);
free_value (a);
return r;
}
static int
chk_times (quad_t a, quad_t b, quad_t r)
{
/* special case: first operand is 0, no overflow possible */
if (a == 0)
return 0;
/* cerify that result of division matches second operand */
if (r / a != b)
return 1;
return 0;
}
static struct val *
op_times (struct val *a, struct val *b)
{
struct val *r;
if (!to_integer (a) || !to_integer (b)) {
free_value(a);
free_value(b);
ast_log(LOG_WARNING, "non-numeric argument\n");
return(make_integer(0));
}
r = make_integer (/*(quad_t)*/(a->u.i * b->u.i));
if (chk_times (a->u.i, b->u.i, r->u.i)) {
ast_log(LOG_WARNING, "overflow\n");
}
free_value (a);
free_value (b);
return (r);
}
static int
chk_div (quad_t a, quad_t b)
{
/* div by zero has been taken care of before */
/* only QUAD_MIN / -1 causes overflow */
if (a == QUAD_MIN && b == -1)
return 1;
/* everything else is OK */
return 0;
}
static struct val *
op_div (struct val *a, struct val *b)
{
struct val *r;
if (!to_integer (a)) {
free_value(a);
free_value(b);
ast_log(LOG_WARNING, "non-numeric argument\n");
return make_integer(0);
} else if (!to_integer (b)) {
free_value(a);
free_value(b);
ast_log(LOG_WARNING, "non-numeric argument\n");
return make_integer(INT_MAX);
}
if (b->u.i == 0) {
ast_log(LOG_WARNING, "division by zero\n");
free_value(a);
free_value(b);
return make_integer(INT_MAX);
}
r = make_integer (/*(quad_t)*/(a->u.i / b->u.i));
if (chk_div (a->u.i, b->u.i)) {
ast_log(LOG_WARNING, "overflow\n");
}
free_value (a);
free_value (b);
return r;
}
static struct val *
op_rem (struct val *a, struct val *b)
{
struct val *r;
if (!to_integer (a) || !to_integer (b)) {
ast_log(LOG_WARNING, "non-numeric argument\n");
free_value(a);
free_value(b);
return make_integer(0);
}
if (b->u.i == 0) {
ast_log(LOG_WARNING, "div by zero\n");
free_value(a);
return(b);
}
r = make_integer (/*(quad_t)*/(a->u.i % b->u.i));
/* chk_rem necessary ??? */
free_value (a);
free_value (b);
return r;
}
static struct val *
op_colon (struct val *a, struct val *b)
{
regex_t rp;
regmatch_t rm[2];
char errbuf[256];
int eval;
struct val *v;
/* coerce to both arguments to strings */
to_string(a);
to_string(b);
/* strip double quotes from both -- they'll screw up the pattern, and the search string starting at ^ */
strip_quotes(a);
strip_quotes(b);
/* compile regular expression */
if ((eval = regcomp (&rp, b->u.s, REG_EXTENDED)) != 0) {
regerror (eval, &rp, errbuf, sizeof(errbuf));
ast_log(LOG_WARNING,"regcomp() error : %s",errbuf);
free_value(a);
free_value(b);
return make_str("");
}
/* compare string against pattern */
/* remember that patterns are anchored to the beginning of the line */
if (regexec(&rp, a->u.s, (size_t)2, rm, 0) == 0 && rm[0].rm_so == 0) {
if (rm[1].rm_so >= 0) {
*(a->u.s + rm[1].rm_eo) = '\0';
v = make_str (a->u.s + rm[1].rm_so);
} else {
v = make_integer ((quad_t)(rm[0].rm_eo - rm[0].rm_so));
}
} else {
if (rp.re_nsub == 0) {
v = make_integer ((quad_t)0);
} else {
v = make_str ("");
}
}
/* free arguments and pattern buffer */
free_value (a);
free_value (b);
regfree (&rp);
return v;
}
static struct val *
op_eqtilde (struct val *a, struct val *b)
{
regex_t rp;
regmatch_t rm[2];
char errbuf[256];
int eval;
struct val *v;
/* coerce to both arguments to strings */
to_string(a);
to_string(b);
/* strip double quotes from both -- they'll screw up the pattern, and the search string starting at ^ */
strip_quotes(a);
strip_quotes(b);
/* compile regular expression */
if ((eval = regcomp (&rp, b->u.s, REG_EXTENDED)) != 0) {
regerror (eval, &rp, errbuf, sizeof(errbuf));
ast_log(LOG_WARNING,"regcomp() error : %s",errbuf);
free_value(a);
free_value(b);
return make_str("");
}
/* compare string against pattern */
/* remember that patterns are anchored to the beginning of the line */
if (regexec(&rp, a->u.s, (size_t)2, rm, 0) == 0 ) {
if (rm[1].rm_so >= 0) {
*(a->u.s + rm[1].rm_eo) = '\0';
v = make_str (a->u.s + rm[1].rm_so);
} else {
v = make_integer ((quad_t)(rm[0].rm_eo - rm[0].rm_so));
}
} else {
if (rp.re_nsub == 0) {
v = make_integer ((quad_t)0);
} else {
v = make_str ("");
}
}
/* free arguments and pattern buffer */
free_value (a);
free_value (b);
regfree (&rp);
return v;
}
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