
/*  A Bison parser, made from ./awk.y
 by  GNU Bison version 1.25
  */

#define YYBISON 1  /* Identify Bison output.  */

#define	FUNC_CALL	258
#define	NAME	259
#define	REGEXP	260
#define	ERROR	261
#define	YNUMBER	262
#define	YSTRING	263
#define	RELOP	264
#define	APPEND_OP	265
#define	ASSIGNOP	266
#define	MATCHOP	267
#define	NEWLINE	268
#define	CONCAT_OP	269
#define	LEX_BEGIN	270
#define	LEX_END	271
#define	LEX_IF	272
#define	LEX_ELSE	273
#define	LEX_RETURN	274
#define	LEX_DELETE	275
#define	LEX_WHILE	276
#define	LEX_DO	277
#define	LEX_FOR	278
#define	LEX_BREAK	279
#define	LEX_CONTINUE	280
#define	LEX_PRINT	281
#define	LEX_PRINTF	282
#define	LEX_NEXT	283
#define	LEX_EXIT	284
#define	LEX_FUNCTION	285
#define	LEX_GETLINE	286
#define	LEX_NEXTFILE	287
#define	LEX_IN	288
#define	LEX_AND	289
#define	LEX_OR	290
#define	INCREMENT	291
#define	DECREMENT	292
#define	LEX_BUILTIN	293
#define	LEX_LENGTH	294
#define	UNARY	295

#line 26 "./awk.y"

#ifdef DEBUG
#define YYDEBUG 12
#endif

#include <assert.h>
#include "awk.h"

#define CAN_FREE	TRUE
#define DONT_FREE	FALSE

#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
static void yyerror(const char *m, ...) ;
#else
static void yyerror(); /* va_alist */
#endif
static char *get_src_buf P((void));
static int yylex P((void));
static NODE *node_common P((NODETYPE op));
static NODE *snode P((NODE *subn, NODETYPE op, int sindex));
static NODE *mkrangenode P((NODE *cpair));
static NODE *make_for_loop P((NODE *init, NODE *cond, NODE *incr));
static NODE *append_right P((NODE *list, NODE *new));
static void func_install P((NODE *params, NODE *def));
static void pop_var P((NODE *np, int freeit));
static void pop_params P((NODE *params));
static NODE *make_param P((char *name));
static NODE *mk_rexp P((NODE *exp));
static int dup_parms P((NODE *func));
static void param_sanity P((NODE *arglist));
static int isnoeffect P((NODETYPE t));
static int isassignable P((NODE *n));

enum defref { FUNC_DEFINE, FUNC_USE };
static void func_use P((char *name, enum defref how));
static void check_funcs P((void));

static int want_assign;		/* lexical scanning kludge */
static int want_regexp;		/* lexical scanning kludge */
static int can_return;		/* lexical scanning kludge */
static int io_allowed = TRUE;	/* lexical scanning kludge */
static char *lexptr;		/* pointer to next char during parsing */
static char *lexend;
static char *lexptr_begin;	/* keep track of where we were for error msgs */
static char *lexeme;		/* beginning of lexeme for debugging */
static char *thisline = NULL;
#define YYDEBUG_LEXER_TEXT (lexeme)
static int param_counter;
static char *tokstart = NULL;
static char *tok = NULL;
static char *tokend;

#define HASHSIZE	1021	/* this constant only used here */
NODE *variables[HASHSIZE];

extern char *source;
extern int sourceline;
extern struct src *srcfiles;
extern int numfiles;
extern int errcount;
extern NODE *begin_block;
extern NODE *end_block;

#line 90 "./awk.y"
typedef union {
	long lval;
	AWKNUM fval;
	NODE *nodeval;
	NODETYPE nodetypeval;
	char *sval;
	NODE *(*ptrval)();
} YYSTYPE;
#include <stdio.h>

#ifndef __cplusplus
#ifndef __STDC__
#define const
#endif
#endif



#define	YYFINAL		312
#define	YYFLAG		-32768
#define	YYNTBASE	62

#define YYTRANSLATE(x) ((unsigned)(x) <= 295 ? yytranslate[x] : 107)

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,    51,     2,     2,    54,    50,     2,     2,    55,
    56,    48,    46,    42,    47,     2,    49,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,    41,    61,    43,
     2,    44,    40,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
    57,     2,    58,    53,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,    59,    45,    60,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
     2,     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,    24,    25,
    26,    27,    28,    29,    30,    31,    32,    33,    34,    35,
    36,    37,    38,    39,    52
};

#if YYDEBUG != 0
static const short yyprhs[] = {     0,
     0,     4,     6,     9,    11,    14,    15,    16,    20,    21,
    25,    28,    31,    34,    36,    39,    42,    44,    46,    48,
    50,    52,    53,    61,    66,    71,    73,    77,    78,    83,
    89,    94,    96,    99,   101,   104,   106,   109,   112,   115,
   119,   121,   128,   137,   146,   157,   167,   170,   173,   180,
   185,   189,   192,   196,   197,   202,   209,   213,   216,   218,
   220,   227,   237,   239,   242,   243,   245,   246,   249,   250,
   253,   256,   259,   260,   262,   264,   268,   270,   273,   277,
   278,   280,   281,   283,   285,   289,   291,   294,   298,   302,
   303,   305,   307,   311,   313,   316,   320,   324,   325,   330,
   336,   341,   345,   349,   353,   357,   359,   362,   366,   370,
   374,   378,   384,   386,   389,   390,   395,   399,   403,   407,
   409,   412,   416,   420,   424,   430,   432,   435,   437,   441,
   445,   449,   453,   457,   461,   464,   467,   470,   474,   479,
   484,   486,   491,   493,   496,   499,   501,   503,   506,   509,
   510,   512,   514,   519,   522,   525,   528,   530,   531,   533,
   535
};

static const short yyrhs[] = {    83,
    63,    83,     0,    64,     0,    63,    64,     0,     1,     0,
    63,     1,     0,     0,     0,    15,    65,    75,     0,     0,
    16,    66,    75,     0,    15,    77,     0,    16,    77,     0,
    72,    75,     0,    75,     0,    72,    77,     0,    69,    71,
     0,     4,     0,     3,     0,    68,     0,    38,     0,    39,
     0,     0,    30,    70,    67,    55,    86,   103,    83,     0,
   101,    76,   102,   104,     0,   101,   102,   104,    83,     0,
    93,     0,    93,    42,    93,     0,     0,    49,    74,     5,
    49,     0,   101,    76,   102,   104,    83,     0,   101,   102,
   104,    83,     0,    78,     0,    76,    78,     0,     1,     0,
    76,     1,     0,    82,     0,   105,    83,     0,   105,    83,
     0,   101,   102,     0,   101,    76,   102,     0,    81,     0,
    21,    55,    93,   103,    83,    78,     0,    22,    83,    78,
    21,    55,    93,   103,    83,     0,    23,    55,     4,    33,
     4,   103,    83,    78,     0,    23,    55,    88,   105,    93,
   105,    88,   103,    83,    78,     0,    23,    55,    88,   105,
   105,    88,   103,    83,    78,     0,    24,    77,     0,    25,
    77,     0,    80,    55,    92,   103,    85,    77,     0,    80,
    89,    85,    77,     0,    28,    88,    77,     0,    32,    77,
     0,    29,    88,    77,     0,     0,    19,    79,    88,    77,
     0,    20,     4,    57,    92,    58,    77,     0,    20,     4,
    77,     0,    93,    77,     0,    26,     0,    27,     0,    17,
    55,    93,   103,    83,    78,     0,    17,    55,    93,   103,
    83,    78,    18,    83,    78,     0,    13,     0,    82,    13,
     0,     0,    82,     0,     0,    43,    97,     0,     0,    44,
    93,     0,    10,    93,     0,    45,    93,     0,     0,    87,
     0,     4,     0,    87,   106,     4,     0,     1,     0,    87,
     1,     0,    87,   106,     1,     0,     0,    93,     0,     0,
    90,     0,    95,     0,    90,   106,    95,     0,     1,     0,
    90,     1,     0,    90,     1,    95,     0,    90,   106,     1,
     0,     0,    92,     0,    93,     0,    92,   106,    93,     0,
     1,     0,    92,     1,     0,    92,     1,    93,     0,    92,
   106,     1,     0,     0,   100,    11,    94,    93,     0,    55,
    92,   103,    33,     4,     0,    93,    45,    31,    99,     0,
    31,    99,    84,     0,    93,    34,    93,     0,    93,    35,
    93,     0,    93,    12,    93,     0,    73,     0,    51,    73,
     0,    93,    33,     4,     0,    93,     9,    93,     0,    93,
    43,    93,     0,    93,    44,    93,     0,    93,    40,    93,
    41,    93,     0,    97,     0,    93,    97,     0,     0,   100,
    11,    96,    95,     0,    95,    34,    95,     0,    95,    35,
    95,     0,    31,    99,    84,     0,    73,     0,    51,    73,
     0,    95,    12,    95,     0,    95,    33,     4,     0,    95,
     9,    95,     0,    95,    40,    95,    41,    95,     0,    97,
     0,    95,    97,     0,    98,     0,    97,    53,    97,     0,
    97,    48,    97,     0,    97,    49,    97,     0,    97,    50,
    97,     0,    97,    46,    97,     0,    97,    47,    97,     0,
   100,    36,     0,   100,    37,     0,    51,    97,     0,    55,
    93,   103,     0,    38,    55,    91,   103,     0,    39,    55,
    91,   103,     0,    39,     0,     3,    55,    91,   103,     0,
   100,     0,    36,   100,     0,    37,   100,     0,     7,     0,
     8,     0,    47,    97,     0,    46,    97,     0,     0,   100,
     0,     4,     0,     4,    57,    92,    58,     0,    54,    98,
     0,    59,    83,     0,    60,    83,     0,    56,     0,     0,
   105,     0,    61,     0,    42,    83,     0
};

#endif

#if YYDEBUG != 0
static const short yyrline[] = { 0,
   151,   159,   167,   183,   184,   185,   189,   191,   205,   207,
   221,   227,   233,   235,   237,   250,   259,   261,   263,   273,
   274,   278,   282,   297,   302,   311,   313,   322,   324,   342,
   344,   349,   355,   363,   365,   370,   371,   375,   377,   379,
   381,   383,   385,   387,   393,   397,   402,   405,   408,   410,
   430,   469,   488,   490,   495,   497,   499,   513,   518,   520,
   525,   530,   537,   539,   543,   544,   548,   550,   555,   557,
   559,   561,   566,   568,   573,   575,   577,   579,   581,   587,
   589,   594,   596,   601,   603,   609,   611,   613,   615,   620,
   622,   627,   629,   635,   637,   639,   641,   646,   649,   654,
   656,   661,   667,   669,   671,   677,   687,   695,   697,   703,
   705,   707,   709,   711,   716,   719,   720,   722,   724,   730,
   732,   734,   736,   738,   740,   742,   744,   749,   751,   753,
   755,   757,   759,   761,   763,   765,   770,   772,   774,   777,
   779,   787,   794,   795,   797,   799,   801,   804,   812,   823,
   825,   830,   832,   842,   847,   851,   855,   859,   860,   864,
   867
};
#endif


#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)

static const char * const yytname[] = {   "$","error","$undefined.","FUNC_CALL",
"NAME","REGEXP","ERROR","YNUMBER","YSTRING","RELOP","APPEND_OP","ASSIGNOP","MATCHOP",
"NEWLINE","CONCAT_OP","LEX_BEGIN","LEX_END","LEX_IF","LEX_ELSE","LEX_RETURN",
"LEX_DELETE","LEX_WHILE","LEX_DO","LEX_FOR","LEX_BREAK","LEX_CONTINUE","LEX_PRINT",
"LEX_PRINTF","LEX_NEXT","LEX_EXIT","LEX_FUNCTION","LEX_GETLINE","LEX_NEXTFILE",
"LEX_IN","LEX_AND","LEX_OR","INCREMENT","DECREMENT","LEX_BUILTIN","LEX_LENGTH",
"'?'","':'","','","'<'","'>'","'|'","'+'","'-'","'*'","'/'","'%'","'!'","UNARY",
"'^'","'$'","'('","')'","'['","']'","'{'","'}'","';'","start","program","rule",
"@1","@2","func_name","lex_builtin","function_prologue","@3","function_body",
"pattern","regexp","@4","action","statements","statement_term","statement","@5",
"print","if_statement","nls","opt_nls","input_redir","output_redir","opt_param_list",
"param_list","opt_exp","opt_rexpression_list","rexpression_list","opt_expression_list",
"expression_list","exp","@6","rexp","@7","simp_exp","non_post_simp_exp","opt_variable",
"variable","l_brace","r_brace","r_paren","opt_semi","semi","comma", NULL
};
#endif

static const short yyr1[] = {     0,
    62,    63,    63,    63,    63,    63,    65,    64,    66,    64,
    64,    64,    64,    64,    64,    64,    67,    67,    67,    68,
    68,    70,    69,    71,    71,    72,    72,    74,    73,    75,
    75,    76,    76,    76,    76,    77,    77,    78,    78,    78,
    78,    78,    78,    78,    78,    78,    78,    78,    78,    78,
    78,    78,    78,    79,    78,    78,    78,    78,    80,    80,
    81,    81,    82,    82,    83,    83,    84,    84,    85,    85,
    85,    85,    86,    86,    87,    87,    87,    87,    87,    88,
    88,    89,    89,    90,    90,    90,    90,    90,    90,    91,
    91,    92,    92,    92,    92,    92,    92,    94,    93,    93,
    93,    93,    93,    93,    93,    93,    93,    93,    93,    93,
    93,    93,    93,    93,    96,    95,    95,    95,    95,    95,
    95,    95,    95,    95,    95,    95,    95,    97,    97,    97,
    97,    97,    97,    97,    97,    97,    98,    98,    98,    98,
    98,    98,    98,    98,    98,    98,    98,    98,    98,    99,
    99,   100,   100,   100,   101,   102,   103,   104,   104,   105,
   106
};

static const short yyr2[] = {     0,
     3,     1,     2,     1,     2,     0,     0,     3,     0,     3,
     2,     2,     2,     1,     2,     2,     1,     1,     1,     1,
     1,     0,     7,     4,     4,     1,     3,     0,     4,     5,
     4,     1,     2,     1,     2,     1,     2,     2,     2,     3,
     1,     6,     8,     8,    10,     9,     2,     2,     6,     4,
     3,     2,     3,     0,     4,     6,     3,     2,     1,     1,
     6,     9,     1,     2,     0,     1,     0,     2,     0,     2,
     2,     2,     0,     1,     1,     3,     1,     2,     3,     0,
     1,     0,     1,     1,     3,     1,     2,     3,     3,     0,
     1,     1,     3,     1,     2,     3,     3,     0,     4,     5,
     4,     3,     3,     3,     3,     1,     2,     3,     3,     3,
     3,     5,     1,     2,     0,     4,     3,     3,     3,     1,
     2,     3,     3,     3,     5,     1,     2,     1,     3,     3,
     3,     3,     3,     3,     2,     2,     2,     3,     4,     4,
     1,     4,     1,     2,     2,     1,     1,     2,     2,     0,
     1,     1,     4,     2,     2,     2,     1,     0,     1,     1,
     2
};

static const short yydefact[] = {    65,
    63,    66,     0,    64,     4,     0,   152,   146,   147,     7,
     9,    22,   150,     0,     0,     0,   141,     0,     0,    28,
     0,     0,     0,    65,     0,     2,     0,     0,   106,    14,
    26,   113,   128,   143,     0,     0,     0,   160,     0,    11,
    36,    65,     0,    12,     0,    67,   151,   144,   145,     0,
     0,     0,     0,   149,   143,   148,     0,   107,   137,   154,
   143,    94,     0,    92,   155,     5,     3,     1,    16,     0,
    13,    15,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,   114,     0,     0,     0,     0,     0,     0,    98,
   135,   136,    34,     0,    54,     0,     0,    65,     0,     0,
     0,    59,    60,    80,    80,     0,    65,     0,    32,     0,
    41,     0,     0,   158,    65,     0,     0,    92,     0,     8,
    37,    10,    18,    17,    20,    21,     0,    19,     0,   102,
     0,     0,     0,     0,    95,    65,   157,     0,     0,   138,
     0,   158,   109,   105,   108,   103,   104,     0,    27,   110,
   111,   150,   133,   134,   130,   131,   132,   129,     0,     0,
    80,     0,     0,     0,    80,    47,    48,     0,    81,     0,
    52,   156,    35,    33,   158,    86,   150,     0,     0,   120,
    69,     0,    84,   126,   143,    58,     0,    39,    65,   159,
    38,   142,   153,     0,    68,   139,   140,    29,    96,   161,
     0,    97,    93,   158,    65,     0,   101,    99,     0,     0,
     0,    57,     0,     0,   152,     0,    51,    53,    65,    67,
   121,     0,     0,     0,     0,     0,    87,     0,     0,     0,
     0,     0,     0,     0,   127,   115,    40,    31,    77,    75,
     0,     0,   100,    24,    25,   112,    65,    55,     0,    65,
     0,     0,     0,    30,   119,    69,    71,    70,    72,    50,
    88,    89,    85,   124,   122,   123,   117,   118,     0,     0,
    65,    78,     0,     0,     0,     0,     0,     0,     0,    80,
     0,     0,   116,    23,    79,    76,    61,    56,    42,     0,
    65,    80,     0,    49,   125,    65,    65,     0,     0,    65,
     0,    43,    44,    65,     0,    62,     0,    46,    45,     0,
     0,     0
};

static const short yydefgoto[] = {   310,
    25,    26,    39,    43,   127,   128,    27,    45,    69,    28,
    29,    57,    30,   108,    40,   109,   161,   110,   111,     2,
     3,   130,   226,   241,   242,   168,   181,   182,   116,   117,
   112,   159,   183,   270,    32,    33,    46,    34,   113,   114,
   140,   189,    42,   139
};

static const short yypact[] = {    -6,
-32768,     0,   875,-32768,-32768,   -40,   -38,-32768,-32768,    -7,
    -7,-32768,    10,    10,    10,   -31,   -26,  1735,  1735,-32768,
  1715,  1735,  1131,    -6,   932,-32768,   -24,    72,-32768,-32768,
  1304,   205,-32768,     5,   709,  1110,  1131,-32768,   -24,-32768,
     0,    -6,   -24,-32768,    85,     3,-32768,-32768,-32768,  1110,
  1110,  1735,  1620,     8,   106,     8,    81,-32768,     8,-32768,
-32768,-32768,    37,  1250,-32768,-32768,-32768,-32768,-32768,   709,
-32768,-32768,  1620,  1620,    90,  1620,  1620,  1620,  1620,  1620,
  1620,    65,   205,  1735,  1735,  1735,  1735,  1735,  1735,-32768,
-32768,-32768,-32768,    50,-32768,   111,    70,    -6,    93,    -7,
    -7,-32768,-32768,  1620,  1620,    -7,    -6,   758,-32768,   819,
-32768,  1040,   709,   100,    -6,    99,    55,  1402,     9,-32768,
-32768,-32768,-32768,-32768,-32768,-32768,   109,-32768,  1735,-32768,
    99,    99,  1250,   119,  1620,    -6,-32768,   133,  1180,-32768,
   758,   100,  1327,   794,-32768,  1515,  1451,  1353,  1402,  1327,
  1327,    10,   125,   125,     8,     8,     8,     8,  1620,  1620,
  1620,    42,  1620,   981,  1657,-32768,-32768,    -7,  1402,    -7,
-32768,-32768,-32768,-32768,   100,-32768,    10,  1715,  1131,-32768,
    96,    39,  1538,   205,   117,-32768,   758,-32768,    -6,-32768,
-32768,-32768,-32768,     7,   205,-32768,-32768,-32768,  1402,-32768,
   166,-32768,  1402,   100,    -6,  1620,-32768,  1402,  1250,    -7,
  1131,-32768,  1250,   151,   -12,   100,-32768,-32768,    -6,     3,
-32768,    37,  1620,  1620,  1620,    -7,  1678,  1201,  1678,  1678,
   181,  1678,  1678,  1678,   205,-32768,-32768,-32768,-32768,-32768,
    99,    56,-32768,-32768,-32768,  1402,    -6,-32768,    11,    -6,
   131,   183,  1061,-32768,-32768,    96,  1402,  1402,  1402,-32768,
  1538,-32768,  1538,   635,    83,-32768,  1599,  1579,  1474,  1678,
    -6,-32768,   103,   981,    -7,   981,  1620,    99,   623,  1620,
    -7,  1678,  1538,-32768,-32768,-32768,   170,-32768,-32768,  1250,
    -6,  1620,    99,-32768,  1538,    -6,    -6,   981,    99,    -6,
   981,-32768,-32768,    -6,   981,-32768,   981,-32768,-32768,   190,
   191,-32768
};

static const short yypgoto[] = {-32768,
-32768,   167,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,
   211,-32768,   107,   -53,   315,  -105,-32768,-32768,-32768,   199,
    97,   -22,   -62,-32768,-32768,  -103,-32768,-32768,    94,   -14,
    -3,-32768,  -202,-32768,   318,   177,  -134,    95,   124,   -69,
   407,  -138,   420,  -177
};


#define	YYLAST		1790


static const short yytable[] = {    31,
   142,   170,   174,   205,   228,     1,     1,   239,    63,   135,
   240,   135,     4,     7,    36,    90,   141,   207,    37,    64,
   252,    31,   119,    50,   261,   263,   264,   265,    51,   267,
   268,   269,   118,   118,    24,   174,   219,   135,   175,   227,
    91,    92,   220,   188,    37,   129,   118,   118,   -83,   133,
   136,   -83,   136,    38,     1,   135,   272,   210,   214,   187,
    89,   216,   -73,    22,   273,   244,   193,   283,   275,   143,
   144,   204,   146,   147,   148,   149,   150,   151,   136,   295,
   136,   174,   -83,   -83,     1,   134,     7,   123,   124,     8,
     9,   229,   137,   145,-32768,   152,   136,   136,   211,   -83,
   169,   169,    38,   285,   160,   223,   286,    47,    48,    49,
   -91,   -74,    55,    55,   162,    55,    61,   237,    14,    15,
    65,    68,   125,   126,   163,    55,    35,   236,    18,    19,
    24,   199,    38,    52,    71,   203,    22,    53,   121,   224,
   225,    91,    92,   131,   132,   120,    55,   165,    35,   122,
    70,    35,    91,    92,   137,   208,   209,   169,    55,   213,
    38,   169,    35,   194,   222,   201,    35,   198,   287,   243,
   289,   251,    86,    87,    88,    64,   293,    89,    55,    55,
    55,    55,    55,    55,   266,   277,   278,   296,   299,   311,
   312,    67,   303,   281,   164,   306,   249,   255,    60,   308,
     0,   309,   246,   172,   185,     0,    55,   118,    41,    41,
     0,   191,    55,     0,     0,     0,     0,     0,     0,   257,
   258,   259,     0,    55,     0,     0,    41,    55,     0,     0,
     0,    58,   200,     0,     0,     0,     0,    55,    55,     0,
    55,    55,    55,    55,    55,    55,    47,     0,     0,   279,
    84,    85,    86,    87,    88,     0,     0,    89,     0,     0,
     0,     0,     0,    55,     0,     0,     0,     0,     0,     0,
     0,    47,    55,   290,     0,     0,   169,    55,     0,     0,
     0,     0,     0,     0,     0,   238,     0,     0,   169,     0,
     0,     0,     0,    55,     0,     0,     0,    55,    41,    41,
     0,   245,    55,    55,    41,     0,     0,    55,     0,     0,
    41,     0,     0,     0,     0,   254,     0,     0,     0,     0,
   180,   185,   185,   185,   185,    44,   185,   185,   185,     0,
     0,     0,     0,     0,     0,    54,    56,     0,    59,     0,
    55,     0,    72,   274,     0,     0,   276,     0,    83,     0,
     0,    55,    55,    55,     0,    55,     0,    55,    55,    55,
    41,    55,    55,    55,   185,     0,    41,   284,    41,    59,
     0,     0,     0,    55,     0,     0,   185,    55,     0,     0,
     0,    83,     0,     0,    55,     0,     0,   298,   221,    55,
     0,     0,   301,   302,     0,     0,   305,     0,     0,     0,
   307,   153,   154,   155,   156,   157,   158,     0,    41,     0,
     0,     0,     0,     0,   166,   167,     0,     0,     0,     0,
   171,     0,     0,     0,    41,     0,   186,   184,     0,    83,
     0,     0,     0,     0,     0,    83,     0,   180,   180,   180,
   180,     0,   180,   180,   180,     0,   195,     0,     0,     0,
    83,     0,     0,     0,   115,     0,     0,     0,     0,     0,
    83,    83,     0,    83,    83,    83,    83,    83,    83,   138,
     0,     0,     0,    41,     0,     0,   212,     0,     0,    41,
   180,     0,   217,     0,   218,     0,    83,     0,     0,   115,
     0,     0,   180,     0,     0,    59,     0,     0,     0,     0,
   235,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     0,     0,     0,    83,     0,     0,     0,
    83,     0,   192,     0,   248,    83,    83,   115,     0,     0,
    83,     0,   115,   190,     0,     0,     0,   196,   197,     0,
   260,     0,     0,     0,   184,   184,   184,   184,     0,   184,
   184,   184,     0,     0,     0,     0,     0,     0,     0,     0,
   115,   190,     0,    83,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     0,    83,    83,    83,     0,   235,     0,
   235,   235,   235,   115,   235,   235,   235,   184,     0,   288,
     0,     0,     0,     0,   190,   294,    83,     0,     0,   184,
   235,     0,     0,     0,     0,     0,   115,    83,     0,     0,
     0,     0,   235,     0,     0,   247,     0,     0,     0,   250,
     0,     0,     0,   190,     0,     6,     7,     0,   256,     8,
     9,    73,     0,     0,    74,   253,     0,     0,     7,     0,
     0,     8,     9,-32768,     0,     0,     0,   271,     0,     0,
     0,     0,     0,     0,     0,    75,    76,    77,    14,    15,
    16,    17,    78,     0,     0,    80,    81,    82,    18,    19,
    14,    15,   280,    52,     0,     0,    22,    53,     0,     0,
    18,    19,     0,    38,   291,    52,     0,     0,    22,    53,
     0,     0,     0,   115,     0,   115,   297,     0,   292,   300,
     0,     0,     0,     0,     0,   304,     0,     0,     0,    93,
     0,     6,     7,     0,     0,     8,     9,   115,     0,     0,
   115,     0,     0,     0,   115,    94,   115,    95,    96,    97,
    98,    99,   100,   101,   102,   103,   104,   105,     0,    13,
   106,     0,     0,     0,    14,    15,    16,    17,     0,     0,
     0,     0,     0,     0,    18,    19,     0,    20,   173,    21,
     6,     7,    22,    23,     8,     9,     0,    24,   107,    38,
     0,     0,     0,     0,    94,     0,    95,    96,    97,    98,
    99,   100,   101,   102,   103,   104,   105,     0,    13,   106,
     0,     0,     0,    14,    15,    16,    17,     7,     0,     0,
     8,     9,    73,    18,    19,-32768,    20,     0,    21,     0,
     0,    22,    23,     0,     0,     0,    24,   107,    38,   176,
     0,     6,     7,     0,     0,     8,     9,     0,   -82,    14,
    15,   -82,     0,     0,     0,     0,    80,    81,    82,    18,
    19,     0,     0,     0,    52,     0,     0,    22,    53,   177,
     0,     0,     0,     0,    14,    15,    16,    17,     0,     0,
     0,     0,   -82,   -82,    18,    19,     0,    20,     0,   178,
     0,     0,    22,   179,    -6,     5,     0,     6,     7,   -82,
     0,     8,     9,     0,     0,     0,     0,    -6,     0,    10,
    11,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     0,    12,    13,     0,     0,     0,     0,
    14,    15,    16,    17,     0,     0,     0,     0,     0,     0,
    18,    19,     0,    20,     0,    21,     0,     0,    22,    23,
     0,   -65,    66,    24,     6,     7,     0,     0,     8,     9,
     0,     0,     0,     0,     1,     0,    10,    11,     0,     0,
     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     0,    12,    13,     0,     0,     0,     0,    14,    15,    16,
    17,     0,     0,     0,     0,     0,     0,    18,    19,     0,
    20,     0,    21,     6,     7,    22,    23,     8,     9,     0,
    24,     0,     0,     0,     0,     0,     0,    94,     0,    95,
    96,    97,    98,    99,   100,   101,   102,   103,   104,   105,
     0,    13,   106,     0,     0,     0,    14,    15,    16,    17,
     0,     0,     0,     0,     0,     0,    18,    19,     0,    20,
     0,    21,     0,     0,    22,    23,     0,     0,     0,    24,
     0,    38,     6,     7,     0,     0,     8,     9,    73,     0,
     0,    74,     1,     0,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     6,     7,     0,     0,     8,     9,     0,
     0,     0,    75,    76,    77,    14,    15,    16,    17,    78,
     0,     0,    80,    81,    82,    18,    19,     0,     0,     0,
    52,    13,     0,    22,    53,     0,    14,    15,    16,    17,
    38,     0,     0,     0,     0,     0,    18,    19,     0,    20,
    62,    21,     6,     7,    22,    23,     8,     9,     0,     0,
     0,    38,     0,     0,     0,     0,     0,     0,     0,     0,
     0,    62,     0,     6,     7,     0,     0,     8,     9,     0,
    13,     0,     0,     0,     0,    14,    15,    16,    17,     0,
     0,     0,     0,     0,     0,    18,    19,     0,    20,     0,
    21,    13,     0,    22,    23,   -90,    14,    15,    16,    17,
     0,     0,     0,     0,     0,     0,    18,    19,     0,    20,
   202,    21,     6,     7,    22,    23,     8,     9,     0,     0,
     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     0,   262,     0,     6,     7,     0,     0,     8,     9,     0,
    13,     0,     0,     0,     0,    14,    15,    16,    17,     0,
     0,     0,     0,     0,     0,    18,    19,     0,    20,     0,
    21,   177,     0,    22,    23,     0,    14,    15,    16,    17,
     0,     0,     0,     0,     0,     0,    18,    19,     0,    20,
     0,   178,     6,     7,    22,    53,     8,     9,    73,     0,
     0,    74,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,    75,    76,    77,    14,    15,    16,    17,    78,
     0,     0,    80,    81,    82,    18,    19,     0,     0,     0,
    52,     0,     0,    22,    53,   137,     6,     7,     0,     0,
     8,     9,    73,     0,     0,    74,     0,     0,     0,     0,
     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     7,     0,     0,     8,     9,-32768,    75,    76,    77,    14,
    15,    16,    17,    78,     0,    79,    80,    81,    82,    18,
    19,     0,     0,     0,    52,     6,     7,    22,    53,     8,
     9,    73,    14,    15,    74,     0,     0,     0,     0,-32768,
-32768,-32768,    18,    19,     0,     0,     0,    52,     0,     0,
    22,    53,     0,     0,     0,    75,    76,    77,    14,    15,
    16,    17,    78,   206,     0,    80,    81,    82,    18,    19,
     0,     0,     0,    52,     6,     7,    22,    53,     8,     9,
    73,     0,     0,    74,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     0,    75,    76,    77,    14,    15,    16,
    17,    78,     0,     0,    80,    81,    82,    18,    19,     0,
     0,     0,    52,     6,     7,    22,    53,     8,     9,    73,
     0,     0,    74,     0,     0,     0,     0,     0,     0,     0,
     0,     0,     0,     0,     0,     0,     6,     7,     0,     0,
     8,     9,   229,    75,    76,   230,    14,    15,    16,    17,
     0,     0,     0,    80,    81,    82,    18,    19,     0,     0,
     0,    52,     0,     0,    22,    53,   231,   232,   233,    14,
    15,    16,    17,   234,   282,     0,     0,     6,     7,    18,
    19,     8,     9,    73,    52,     0,    74,    22,    53,     0,
     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
     6,     7,     0,     0,     8,     9,   229,    75,     0,   230,
    14,    15,    16,    17,     0,     0,     0,    80,    81,    82,
    18,    19,     0,     0,     0,    52,     0,     0,    22,    53,
   231,   232,   233,    14,    15,    16,    17,   234,     0,     0,
     0,     6,     7,    18,    19,     8,     9,   229,    52,     0,
   230,    22,    53,     0,     0,     0,     0,     0,     0,     0,
     0,     6,     7,     0,     0,     8,     9,   229,     0,     0,
   230,   231,   232,     0,    14,    15,    16,    17,     0,     0,
     0,     0,     6,     7,    18,    19,     8,     9,     0,    52,
     0,   231,    22,    53,    14,    15,    16,    17,     0,     0,
     0,     0,     0,     0,    18,    19,     0,     0,     0,    52,
    13,     0,    22,    53,     0,    14,    15,    16,    17,     6,
   215,     0,     0,     8,     9,    18,    19,     0,    20,     0,
    21,     0,     0,    22,    23,     0,     0,     0,     0,     0,
     6,     7,     0,     0,     8,     9,     0,    13,     0,     0,
     0,     0,    14,    15,    16,    17,     0,     0,     0,     0,
     0,     0,    18,    19,     0,    20,     0,    21,   177,     0,
    22,    23,     0,    14,    15,    16,    17,     6,     7,     0,
     0,     8,     9,    18,    19,     0,    20,     0,   178,     0,
     0,    22,    53,     0,     0,     0,     0,     6,     7,     0,
     0,     8,     9,     0,     0,     0,     0,     0,     0,     0,
    14,    15,    16,    17,     0,     0,     0,     0,     0,     0,
    18,    19,     0,    20,     0,    52,     0,     0,    22,    53,
    14,    15,    16,    17,     0,     0,     0,     0,     0,     0,
    18,    19,     0,     0,     0,    52,     0,     0,    22,    53
};

static const short yycheck[] = {     3,
    70,   105,   108,   142,   182,    13,    13,     1,    23,     1,
     4,     1,    13,     4,    55,    11,    70,   152,    57,    23,
    33,    25,    37,    55,   227,   228,   229,   230,    55,   232,
   233,   234,    36,    37,    59,   141,   175,     1,   108,     1,
    36,    37,   177,   113,    57,    43,    50,    51,    10,    53,
    42,    13,    42,    61,    13,     1,     1,   161,   164,   113,
    53,   165,    56,    54,   242,   204,    58,   270,    58,    73,
    74,   141,    76,    77,    78,    79,    80,    81,    42,   282,
    42,   187,    44,    45,    13,     5,     4,     3,     4,     7,
     8,     9,    56,     4,    12,    31,    42,    42,    57,    61,
   104,   105,    61,     1,    55,    10,     4,    13,    14,    15,
    56,    56,    18,    19,     4,    21,    22,   187,    36,    37,
    24,    25,    38,    39,    55,    31,     3,    11,    46,    47,
    59,   135,    61,    51,    28,   139,    54,    55,    42,    44,
    45,    36,    37,    50,    51,    39,    52,    55,    25,    43,
    27,    28,    36,    37,    56,   159,   160,   161,    64,   163,
    61,   165,    39,    55,   179,    33,    43,    49,   274,     4,
   276,    21,    48,    49,    50,   179,   280,    53,    84,    85,
    86,    87,    88,    89,     4,    55,     4,    18,   292,     0,
     0,    25,   298,   256,    98,   301,   211,   220,    22,   305,
    -1,   307,   206,   107,   110,    -1,   112,   211,    10,    11,
    -1,   115,   118,    -1,    -1,    -1,    -1,    -1,    -1,   223,
   224,   225,    -1,   129,    -1,    -1,    28,   133,    -1,    -1,
    -1,    21,   136,    -1,    -1,    -1,    -1,   143,   144,    -1,
   146,   147,   148,   149,   150,   151,   152,    -1,    -1,   253,
    46,    47,    48,    49,    50,    -1,    -1,    53,    -1,    -1,
    -1,    -1,    -1,   169,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,   177,   178,   277,    -1,    -1,   280,   183,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,   189,    -1,    -1,   292,    -1,
    -1,    -1,    -1,   199,    -1,    -1,    -1,   203,   100,   101,
    -1,   205,   208,   209,   106,    -1,    -1,   213,    -1,    -1,
   112,    -1,    -1,    -1,    -1,   219,    -1,    -1,    -1,    -1,
   110,   227,   228,   229,   230,    11,   232,   233,   234,    -1,
    -1,    -1,    -1,    -1,    -1,    18,    19,    -1,    21,    -1,
   246,    -1,    28,   247,    -1,    -1,   250,    -1,    31,    -1,
    -1,   257,   258,   259,    -1,   261,    -1,   263,   264,   265,
   162,   267,   268,   269,   270,    -1,   168,   271,   170,    52,
    -1,    -1,    -1,   279,    -1,    -1,   282,   283,    -1,    -1,
    -1,    64,    -1,    -1,   290,    -1,    -1,   291,   178,   295,
    -1,    -1,   296,   297,    -1,    -1,   300,    -1,    -1,    -1,
   304,    84,    85,    86,    87,    88,    89,    -1,   210,    -1,
    -1,    -1,    -1,    -1,   100,   101,    -1,    -1,    -1,    -1,
   106,    -1,    -1,    -1,   226,    -1,   112,   110,    -1,   112,
    -1,    -1,    -1,    -1,    -1,   118,    -1,   227,   228,   229,
   230,    -1,   232,   233,   234,    -1,   129,    -1,    -1,    -1,
   133,    -1,    -1,    -1,    35,    -1,    -1,    -1,    -1,    -1,
   143,   144,    -1,   146,   147,   148,   149,   150,   151,    63,
    -1,    -1,    -1,   275,    -1,    -1,   162,    -1,    -1,   281,
   270,    -1,   168,    -1,   170,    -1,   169,    -1,    -1,    70,
    -1,    -1,   282,    -1,    -1,   178,    -1,    -1,    -1,    -1,
   183,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,   199,    -1,    -1,    -1,
   203,    -1,   116,    -1,   210,   208,   209,   108,    -1,    -1,
   213,    -1,   113,   114,    -1,    -1,    -1,   131,   132,    -1,
   226,    -1,    -1,    -1,   227,   228,   229,   230,    -1,   232,
   233,   234,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
   141,   142,    -1,   246,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,   257,   258,   259,    -1,   261,    -1,
   263,   264,   265,   164,   267,   268,   269,   270,    -1,   275,
    -1,    -1,    -1,    -1,   175,   281,   279,    -1,    -1,   282,
   283,    -1,    -1,    -1,    -1,    -1,   187,   290,    -1,    -1,
    -1,    -1,   295,    -1,    -1,   209,    -1,    -1,    -1,   213,
    -1,    -1,    -1,   204,    -1,     3,     4,    -1,   222,     7,
     8,     9,    -1,    -1,    12,   216,    -1,    -1,     4,    -1,
    -1,     7,     8,     9,    -1,    -1,    -1,   241,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    33,    34,    35,    36,    37,
    38,    39,    40,    -1,    -1,    43,    44,    45,    46,    47,
    36,    37,   253,    51,    -1,    -1,    54,    55,    -1,    -1,
    46,    47,    -1,    61,   278,    51,    -1,    -1,    54,    55,
    -1,    -1,    -1,   274,    -1,   276,   290,    -1,   279,   293,
    -1,    -1,    -1,    -1,    -1,   299,    -1,    -1,    -1,     1,
    -1,     3,     4,    -1,    -1,     7,     8,   298,    -1,    -1,
   301,    -1,    -1,    -1,   305,    17,   307,    19,    20,    21,
    22,    23,    24,    25,    26,    27,    28,    29,    -1,    31,
    32,    -1,    -1,    -1,    36,    37,    38,    39,    -1,    -1,
    -1,    -1,    -1,    -1,    46,    47,    -1,    49,     1,    51,
     3,     4,    54,    55,     7,     8,    -1,    59,    60,    61,
    -1,    -1,    -1,    -1,    17,    -1,    19,    20,    21,    22,
    23,    24,    25,    26,    27,    28,    29,    -1,    31,    32,
    -1,    -1,    -1,    36,    37,    38,    39,     4,    -1,    -1,
     7,     8,     9,    46,    47,    12,    49,    -1,    51,    -1,
    -1,    54,    55,    -1,    -1,    -1,    59,    60,    61,     1,
    -1,     3,     4,    -1,    -1,     7,     8,    -1,    10,    36,
    37,    13,    -1,    -1,    -1,    -1,    43,    44,    45,    46,
    47,    -1,    -1,    -1,    51,    -1,    -1,    54,    55,    31,
    -1,    -1,    -1,    -1,    36,    37,    38,    39,    -1,    -1,
    -1,    -1,    44,    45,    46,    47,    -1,    49,    -1,    51,
    -1,    -1,    54,    55,     0,     1,    -1,     3,     4,    61,
    -1,     7,     8,    -1,    -1,    -1,    -1,    13,    -1,    15,
    16,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    30,    31,    -1,    -1,    -1,    -1,
    36,    37,    38,    39,    -1,    -1,    -1,    -1,    -1,    -1,
    46,    47,    -1,    49,    -1,    51,    -1,    -1,    54,    55,
    -1,     0,     1,    59,     3,     4,    -1,    -1,     7,     8,
    -1,    -1,    -1,    -1,    13,    -1,    15,    16,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    30,    31,    -1,    -1,    -1,    -1,    36,    37,    38,
    39,    -1,    -1,    -1,    -1,    -1,    -1,    46,    47,    -1,
    49,    -1,    51,     3,     4,    54,    55,     7,     8,    -1,
    59,    -1,    -1,    -1,    -1,    -1,    -1,    17,    -1,    19,
    20,    21,    22,    23,    24,    25,    26,    27,    28,    29,
    -1,    31,    32,    -1,    -1,    -1,    36,    37,    38,    39,
    -1,    -1,    -1,    -1,    -1,    -1,    46,    47,    -1,    49,
    -1,    51,    -1,    -1,    54,    55,    -1,    -1,    -1,    59,
    -1,    61,     3,     4,    -1,    -1,     7,     8,     9,    -1,
    -1,    12,    13,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,     3,     4,    -1,    -1,     7,     8,    -1,
    -1,    -1,    33,    34,    35,    36,    37,    38,    39,    40,
    -1,    -1,    43,    44,    45,    46,    47,    -1,    -1,    -1,
    51,    31,    -1,    54,    55,    -1,    36,    37,    38,    39,
    61,    -1,    -1,    -1,    -1,    -1,    46,    47,    -1,    49,
     1,    51,     3,     4,    54,    55,     7,     8,    -1,    -1,
    -1,    61,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,     1,    -1,     3,     4,    -1,    -1,     7,     8,    -1,
    31,    -1,    -1,    -1,    -1,    36,    37,    38,    39,    -1,
    -1,    -1,    -1,    -1,    -1,    46,    47,    -1,    49,    -1,
    51,    31,    -1,    54,    55,    56,    36,    37,    38,    39,
    -1,    -1,    -1,    -1,    -1,    -1,    46,    47,    -1,    49,
     1,    51,     3,     4,    54,    55,     7,     8,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,     1,    -1,     3,     4,    -1,    -1,     7,     8,    -1,
    31,    -1,    -1,    -1,    -1,    36,    37,    38,    39,    -1,
    -1,    -1,    -1,    -1,    -1,    46,    47,    -1,    49,    -1,
    51,    31,    -1,    54,    55,    -1,    36,    37,    38,    39,
    -1,    -1,    -1,    -1,    -1,    -1,    46,    47,    -1,    49,
    -1,    51,     3,     4,    54,    55,     7,     8,     9,    -1,
    -1,    12,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    33,    34,    35,    36,    37,    38,    39,    40,
    -1,    -1,    43,    44,    45,    46,    47,    -1,    -1,    -1,
    51,    -1,    -1,    54,    55,    56,     3,     4,    -1,    -1,
     7,     8,     9,    -1,    -1,    12,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
     4,    -1,    -1,     7,     8,     9,    33,    34,    35,    36,
    37,    38,    39,    40,    -1,    42,    43,    44,    45,    46,
    47,    -1,    -1,    -1,    51,     3,     4,    54,    55,     7,
     8,     9,    36,    37,    12,    -1,    -1,    -1,    -1,    43,
    44,    45,    46,    47,    -1,    -1,    -1,    51,    -1,    -1,
    54,    55,    -1,    -1,    -1,    33,    34,    35,    36,    37,
    38,    39,    40,    41,    -1,    43,    44,    45,    46,    47,
    -1,    -1,    -1,    51,     3,     4,    54,    55,     7,     8,
     9,    -1,    -1,    12,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    33,    34,    35,    36,    37,    38,
    39,    40,    -1,    -1,    43,    44,    45,    46,    47,    -1,
    -1,    -1,    51,     3,     4,    54,    55,     7,     8,     9,
    -1,    -1,    12,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,     3,     4,    -1,    -1,
     7,     8,     9,    33,    34,    12,    36,    37,    38,    39,
    -1,    -1,    -1,    43,    44,    45,    46,    47,    -1,    -1,
    -1,    51,    -1,    -1,    54,    55,    33,    34,    35,    36,
    37,    38,    39,    40,    41,    -1,    -1,     3,     4,    46,
    47,     7,     8,     9,    51,    -1,    12,    54,    55,    -1,
    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
     3,     4,    -1,    -1,     7,     8,     9,    33,    -1,    12,
    36,    37,    38,    39,    -1,    -1,    -1,    43,    44,    45,
    46,    47,    -1,    -1,    -1,    51,    -1,    -1,    54,    55,
    33,    34,    35,    36,    37,    38,    39,    40,    -1,    -1,
    -1,     3,     4,    46,    47,     7,     8,     9,    51,    -1,
    12,    54,    55,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    -1,     3,     4,    -1,    -1,     7,     8,     9,    -1,    -1,
    12,    33,    34,    -1,    36,    37,    38,    39,    -1,    -1,
    -1,    -1,     3,     4,    46,    47,     7,     8,    -1,    51,
    -1,    33,    54,    55,    36,    37,    38,    39,    -1,    -1,
    -1,    -1,    -1,    -1,    46,    47,    -1,    -1,    -1,    51,
    31,    -1,    54,    55,    -1,    36,    37,    38,    39,     3,
     4,    -1,    -1,     7,     8,    46,    47,    -1,    49,    -1,
    51,    -1,    -1,    54,    55,    -1,    -1,    -1,    -1,    -1,
     3,     4,    -1,    -1,     7,     8,    -1,    31,    -1,    -1,
    -1,    -1,    36,    37,    38,    39,    -1,    -1,    -1,    -1,
    -1,    -1,    46,    47,    -1,    49,    -1,    51,    31,    -1,
    54,    55,    -1,    36,    37,    38,    39,     3,     4,    -1,
    -1,     7,     8,    46,    47,    -1,    49,    -1,    51,    -1,
    -1,    54,    55,    -1,    -1,    -1,    -1,     3,     4,    -1,
    -1,     7,     8,    -1,    -1,    -1,    -1,    -1,    -1,    -1,
    36,    37,    38,    39,    -1,    -1,    -1,    -1,    -1,    -1,
    46,    47,    -1,    49,    -1,    51,    -1,    -1,    54,    55,
    36,    37,    38,    39,    -1,    -1,    -1,    -1,    -1,    -1,
    46,    47,    -1,    -1,    -1,    51,    -1,    -1,    54,    55
};
/* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
#line 3 "/usr/lib/bison.simple"

/* 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

#line 196 "/usr/lib/bison.simple"

/* 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
      if (yydebug)
	fprintf(stderr, "Stack size increased to %d\n", yystacksize);
#endif

      if (yyssp >= yyss + yystacksize - 1)
	YYABORT;
    }

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Entering state %d\n", yystate);
#endif

  goto 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 == YYFLAG)
    goto yydefault;

  /* Not known => get a lookahead token if don't already have one.  */

  /* yychar is either YYEMPTY or YYEOF
     or a valid token in external form.  */

  if (yychar == YYEMPTY)
    {
#if YYDEBUG != 0
      if (yydebug)
	fprintf(stderr, "Reading a token: ");
#endif
      yychar = YYLEX;
    }

  /* Convert token to internal form (in yychar1) for indexing tables with */

  if (yychar <= 0)		/* This means end of input. */
    {
      yychar1 = 0;
      yychar = YYEOF;		/* Don't call YYLEX any more */

#if YYDEBUG != 0
      if (yydebug)
	fprintf(stderr, "Now at end of input.\n");
#endif
    }
  else
    {
      yychar1 = YYTRANSLATE(yychar);

#if YYDEBUG != 0
      if (yydebug)
	{
	  fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
	  /* Give the individual parser a way to print the precise meaning
	     of a token, for further debugging info.  */
#ifdef YYPRINT
	  YYPRINT (stderr, yychar, yylval);
#endif
	  fprintf (stderr, ")\n");
	}
#endif
    }

  yyn += yychar1;
  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
    goto yydefault;

  yyn = yytable[yyn];

  /* yyn is what to do for this token type in this state.
     Negative => reduce, -yyn is rule number.
     Positive => shift, yyn is new state.
       New state is final state => don't bother to shift,
       just return success.
     0, or most negative number => error.  */

  if (yyn < 0)
    {
      if (yyn == YYFLAG)
	goto yyerrlab;
      yyn = -yyn;
      goto yyreduce;
    }
  else if (yyn == 0)
    goto yyerrlab;

  if (yyn == YYFINAL)
    YYACCEPT;

  /* Shift the lookahead token.  */

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
#endif

  /* Discard the token being shifted unless it is eof.  */
  if (yychar != YYEOF)
    yychar = YYEMPTY;

  *++yyvsp = yylval;
#ifdef YYLSP_NEEDED
  *++yylsp = yylloc;
#endif

  /* count tokens shifted since error; after three, turn off error status.  */
  if (yyerrstatus) yyerrstatus--;

  yystate = yyn;
  goto yynewstate;

/* Do the default action for the current state.  */
yydefault:

  yyn = yydefact[yystate];
  if (yyn == 0)
    goto yyerrlab;

/* Do a reduction.  yyn is the number of a rule to reduce with.  */
yyreduce:
  yylen = yyr2[yyn];
  if (yylen > 0)
    yyval = yyvsp[1-yylen]; /* implement default value of the action */

#if YYDEBUG != 0
  if (yydebug)
    {
      int i;

      fprintf (stderr, "Reducing via rule %d (line %d), ",
	       yyn, yyrline[yyn]);

      /* Print the symbols being reduced, and their result.  */
      for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
	fprintf (stderr, "%s ", yytname[yyrhs[i]]);
      fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
    }
#endif


  switch (yyn) {

case 1:
#line 152 "./awk.y"
{
			expression_value = yyvsp[-1].nodeval;
			check_funcs();
		;
    break;}
case 2:
#line 160 "./awk.y"
{ 
			if (yyvsp[0].nodeval != NULL)
				yyval.nodeval = yyvsp[0].nodeval;
			else
				yyval.nodeval = NULL;
			yyerrok;
		;
    break;}
case 3:
#line 169 "./awk.y"
{
			if (yyvsp[0].nodeval == NULL)
				yyval.nodeval = yyvsp[-1].nodeval;
			else if (yyvsp[-1].nodeval == NULL)
				yyval.nodeval = yyvsp[0].nodeval;
			else {
				if (yyvsp[-1].nodeval->type != Node_rule_list)
					yyvsp[-1].nodeval = node(yyvsp[-1].nodeval, Node_rule_list,
						(NODE*) NULL);
				yyval.nodeval = append_right(yyvsp[-1].nodeval,
				   node(yyvsp[0].nodeval, Node_rule_list, (NODE *) NULL));
			}
			yyerrok;
		;
    break;}
case 4:
#line 183 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 5:
#line 184 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 6:
#line 185 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 7:
#line 189 "./awk.y"
{ io_allowed = FALSE; ;
    break;}
case 8:
#line 191 "./awk.y"
{
		if (begin_block != NULL) {
			if (begin_block->type != Node_rule_list)
				begin_block = node(begin_block, Node_rule_list,
					(NODE *) NULL);
			(void) append_right(begin_block, node(
			    node((NODE *) NULL, Node_rule_node, yyvsp[0].nodeval),
			    Node_rule_list, (NODE *) NULL) );
		} else
			begin_block = node((NODE *) NULL, Node_rule_node, yyvsp[0].nodeval);
		yyval.nodeval = NULL;
		io_allowed = TRUE;
		yyerrok;
	  ;
    break;}
case 9:
#line 205 "./awk.y"
{ io_allowed = FALSE; ;
    break;}
case 10:
#line 207 "./awk.y"
{
		if (end_block != NULL) {
			if (end_block->type != Node_rule_list)
				end_block = node(end_block, Node_rule_list,
					(NODE *) NULL);
			(void) append_right (end_block, node(
			    node((NODE *) NULL, Node_rule_node, yyvsp[0].nodeval),
			    Node_rule_list, (NODE *) NULL));
		} else
			end_block = node((NODE *) NULL, Node_rule_node, yyvsp[0].nodeval);
		yyval.nodeval = NULL;
		io_allowed = TRUE;
		yyerrok;
	  ;
    break;}
case 11:
#line 222 "./awk.y"
{
		warning("BEGIN blocks must have an action part");
		errcount++;
		yyerrok;
	  ;
    break;}
case 12:
#line 228 "./awk.y"
{
		warning("END blocks must have an action part");
		errcount++;
		yyerrok;
	  ;
    break;}
case 13:
#line 234 "./awk.y"
{ yyval.nodeval = node(yyvsp[-1].nodeval, Node_rule_node, yyvsp[0].nodeval); yyerrok; ;
    break;}
case 14:
#line 236 "./awk.y"
{ yyval.nodeval = node((NODE *) NULL, Node_rule_node, yyvsp[0].nodeval); yyerrok; ;
    break;}
case 15:
#line 238 "./awk.y"
{
		  yyval.nodeval = node(yyvsp[-1].nodeval,
			     Node_rule_node,
			     node(node(node(make_number(0.0),
					    Node_field_spec,
					    (NODE *) NULL),
					Node_expression_list,
					(NODE *) NULL),
				  Node_K_print,
				  (NODE *) NULL));
		  yyerrok;
		;
    break;}
case 16:
#line 251 "./awk.y"
{
			func_install(yyvsp[-1].nodeval, yyvsp[0].nodeval);
			yyval.nodeval = NULL;
			yyerrok;
		;
    break;}
case 17:
#line 260 "./awk.y"
{ yyval.sval = yyvsp[0].sval; ;
    break;}
case 18:
#line 262 "./awk.y"
{ yyval.sval = yyvsp[0].sval; ;
    break;}
case 19:
#line 264 "./awk.y"
{
		yyerror("%s() is a built-in function, it cannot be redefined",
			tokstart);
		errcount++;
		/* yyerrok; */
	  ;
    break;}
case 22:
#line 279 "./awk.y"
{
			param_counter = 0;
		;
    break;}
case 23:
#line 283 "./awk.y"
{
			NODE *t;

			t = make_param(yyvsp[-4].sval);
			t->flags |= FUNC;
			yyval.nodeval = append_right(t, yyvsp[-2].nodeval);
			can_return = TRUE;
			/* check for duplicate parameter names */
			if (dup_parms(yyval.nodeval))
				errcount++;
		;
    break;}
case 24:
#line 298 "./awk.y"
{
		yyval.nodeval = yyvsp[-2].nodeval;
		can_return = FALSE;
	  ;
    break;}
case 25:
#line 303 "./awk.y"
{
		yyval.nodeval = node((NODE *) NULL, Node_K_return, (NODE *) NULL);
		can_return = FALSE;
	  ;
    break;}
case 26:
#line 312 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 27:
#line 314 "./awk.y"
{ yyval.nodeval = mkrangenode(node(yyvsp[-2].nodeval, Node_cond_pair, yyvsp[0].nodeval)); ;
    break;}
case 28:
#line 323 "./awk.y"
{ ++want_regexp; ;
    break;}
case 29:
#line 325 "./awk.y"
{
		  NODE *n;
		  size_t len;

		  getnode(n);
		  n->type = Node_regex;
		  len = strlen(yyvsp[-1].sval);
		  n->re_exp = make_string(yyvsp[-1].sval, len);
		  n->re_reg = make_regexp(yyvsp[-1].sval, len, FALSE, TRUE);
		  n->re_text = NULL;
		  n->re_flags = CONST;
		  n->re_cnt = 1;
		  yyval.nodeval = n;
		;
    break;}
case 30:
#line 343 "./awk.y"
{ yyval.nodeval = yyvsp[-3].nodeval; ;
    break;}
case 31:
#line 345 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 32:
#line 350 "./awk.y"
{
			yyval.nodeval = yyvsp[0].nodeval;
			if (do_lint && isnoeffect(yyval.nodeval->type))
				warning("statement may have no effect");
		;
    break;}
case 33:
#line 356 "./awk.y"
{
			if (yyvsp[-1].nodeval == NULL || yyvsp[-1].nodeval->type != Node_statement_list)
				yyvsp[-1].nodeval = node(yyvsp[-1].nodeval, Node_statement_list, (NODE *) NULL);
	    		yyval.nodeval = append_right(yyvsp[-1].nodeval,
				node(yyvsp[0].nodeval, Node_statement_list, (NODE *)   NULL));
	    		yyerrok;
		;
    break;}
case 34:
#line 364 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 35:
#line 366 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 38:
#line 376 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 39:
#line 378 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 40:
#line 380 "./awk.y"
{ yyval.nodeval = yyvsp[-1].nodeval; ;
    break;}
case 41:
#line 382 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 42:
#line 384 "./awk.y"
{ yyval.nodeval = node(yyvsp[-3].nodeval, Node_K_while, yyvsp[0].nodeval); ;
    break;}
case 43:
#line 386 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_K_do, yyvsp[-5].nodeval); ;
    break;}
case 44:
#line 388 "./awk.y"
{
		yyval.nodeval = node(yyvsp[0].nodeval, Node_K_arrayfor,
			make_for_loop(variable(yyvsp[-5].sval, CAN_FREE, Node_var),
			(NODE *) NULL, variable(yyvsp[-3].sval, CAN_FREE, Node_var_array)));
	  ;
    break;}
case 45:
#line 394 "./awk.y"
{
		yyval.nodeval = node(yyvsp[0].nodeval, Node_K_for, (NODE *) make_for_loop(yyvsp[-7].nodeval, yyvsp[-5].nodeval, yyvsp[-3].nodeval));
	  ;
    break;}
case 46:
#line 398 "./awk.y"
{
		yyval.nodeval = node(yyvsp[0].nodeval, Node_K_for,
			(NODE *) make_for_loop(yyvsp[-6].nodeval, (NODE *) NULL, yyvsp[-3].nodeval));
	  ;
    break;}
case 47:
#line 404 "./awk.y"
{ yyval.nodeval = node((NODE *) NULL, Node_K_break, (NODE *) NULL); ;
    break;}
case 48:
#line 407 "./awk.y"
{ yyval.nodeval = node((NODE *) NULL, Node_K_continue, (NODE *) NULL); ;
    break;}
case 49:
#line 409 "./awk.y"
{ yyval.nodeval = node(yyvsp[-3].nodeval, yyvsp[-5].nodetypeval, yyvsp[-1].nodeval); ;
    break;}
case 50:
#line 411 "./awk.y"
{
			if (yyvsp[-3].nodetypeval == Node_K_print && yyvsp[-2].nodeval == NULL) {
				static int warned = FALSE;

				yyvsp[-2].nodeval = node(node(make_number(0.0),
					       Node_field_spec,
					       (NODE *) NULL),
					  Node_expression_list,
					  (NODE *) NULL);

				if (do_lint && ! io_allowed && ! warned) {
					warned = TRUE;
					warning(
	"plain `print' in BEGIN or END rule should probably be `print \"\"'");
				}
			}

			yyval.nodeval = node(yyvsp[-2].nodeval, yyvsp[-3].nodetypeval, yyvsp[-1].nodeval);
		;
    break;}
case 51:
#line 431 "./awk.y"
{ NODETYPE type;

		  if (yyvsp[-1].nodeval) {
			if (yyvsp[-1].nodeval == lookup("file")) {
				static int warned = FALSE;

				if (! warned) {
					warned = TRUE;
					warning("`next file' is obsolete; use `nextfile'");
				}
				if (do_lint)
					warning("`next file' is a gawk extension");
				if (do_traditional) {
					/*
					 * can't use yyerror, since may have overshot
					 * the source line
					 */
					errcount++;
					error("`next file' is a gawk extension");
				}
				if (! io_allowed) {
					/* same thing */
					errcount++;
					error("`next file' used in BEGIN or END action");
				}
				type = Node_K_nextfile;
			} else {
				errcount++;
				error("illegal expression after `next'");
				type = Node_K_next;	/* sanity */
			}
		  } else {
			if (! io_allowed)
				yyerror("`next' used in BEGIN or END action");
			type = Node_K_next;
		  }
		  yyval.nodeval = node((NODE *) NULL, type, (NODE *) NULL);
		;
    break;}
case 52:
#line 470 "./awk.y"
{
		  if (do_lint)
			warning("`nextfile' is a gawk extension");
		  if (do_traditional) {
			/*
			 * can't use yyerror, since may have overshot
			 * the source line
			 */
			errcount++;
			error("`nextfile' is a gawk extension");
		  }
		  if (! io_allowed) {
			/* same thing */
			errcount++;
			error("`nextfile' used in BEGIN or END action");
		  }
		  yyval.nodeval = node((NODE *) NULL, Node_K_nextfile, (NODE *) NULL);
		;
    break;}
case 53:
#line 489 "./awk.y"
{ yyval.nodeval = node(yyvsp[-1].nodeval, Node_K_exit, (NODE *) NULL); ;
    break;}
case 54:
#line 491 "./awk.y"
{
		  if (! can_return)
			yyerror("`return' used outside function context");
		;
    break;}
case 55:
#line 496 "./awk.y"
{ yyval.nodeval = node(yyvsp[-1].nodeval, Node_K_return, (NODE *) NULL); ;
    break;}
case 56:
#line 498 "./awk.y"
{ yyval.nodeval = node(variable(yyvsp[-4].sval, CAN_FREE, Node_var_array), Node_K_delete, yyvsp[-2].nodeval); ;
    break;}
case 57:
#line 500 "./awk.y"
{
		  if (do_lint)
			warning("`delete array' is a gawk extension");
		  if (do_traditional) {
			/*
			 * can't use yyerror, since may have overshot
			 * the source line
			 */
			errcount++;
			error("`delete array' is a gawk extension");
		  }
		  yyval.nodeval = node(variable(yyvsp[-1].sval, CAN_FREE, Node_var_array), Node_K_delete, (NODE *) NULL);
		;
    break;}
case 58:
#line 514 "./awk.y"
{ yyval.nodeval = yyvsp[-1].nodeval; ;
    break;}
case 59:
#line 519 "./awk.y"
{ yyval.nodetypeval = yyvsp[0].nodetypeval; ;
    break;}
case 60:
#line 521 "./awk.y"
{ yyval.nodetypeval = yyvsp[0].nodetypeval; ;
    break;}
case 61:
#line 526 "./awk.y"
{
		yyval.nodeval = node(yyvsp[-3].nodeval, Node_K_if, 
			node(yyvsp[0].nodeval, Node_if_branches, (NODE *) NULL));
	  ;
    break;}
case 62:
#line 532 "./awk.y"
{ yyval.nodeval = node(yyvsp[-6].nodeval, Node_K_if,
				node(yyvsp[-3].nodeval, Node_if_branches, yyvsp[0].nodeval)); ;
    break;}
case 63:
#line 538 "./awk.y"
{ want_assign = FALSE; ;
    break;}
case 67:
#line 549 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 68:
#line 551 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_redirect_input, (NODE *) NULL); ;
    break;}
case 69:
#line 556 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 70:
#line 558 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_redirect_output, (NODE *) NULL); ;
    break;}
case 71:
#line 560 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_redirect_append, (NODE *) NULL); ;
    break;}
case 72:
#line 562 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_redirect_pipe, (NODE *) NULL); ;
    break;}
case 73:
#line 567 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 74:
#line 569 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 75:
#line 574 "./awk.y"
{ yyval.nodeval = make_param(yyvsp[0].sval); ;
    break;}
case 76:
#line 576 "./awk.y"
{ yyval.nodeval = append_right(yyvsp[-2].nodeval, make_param(yyvsp[0].sval)); yyerrok; ;
    break;}
case 77:
#line 578 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 78:
#line 580 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 79:
#line 582 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 80:
#line 588 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 81:
#line 590 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 82:
#line 595 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 83:
#line 597 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 84:
#line 602 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_expression_list, (NODE *) NULL); ;
    break;}
case 85:
#line 604 "./awk.y"
{
		yyval.nodeval = append_right(yyvsp[-2].nodeval,
			node(yyvsp[0].nodeval, Node_expression_list, (NODE *) NULL));
		yyerrok;
	  ;
    break;}
case 86:
#line 610 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 87:
#line 612 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 88:
#line 614 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 89:
#line 616 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 90:
#line 621 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 91:
#line 623 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 92:
#line 628 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_expression_list, (NODE *) NULL); ;
    break;}
case 93:
#line 630 "./awk.y"
{
			yyval.nodeval = append_right(yyvsp[-2].nodeval,
				node(yyvsp[0].nodeval, Node_expression_list, (NODE *) NULL));
			yyerrok;
		;
    break;}
case 94:
#line 636 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 95:
#line 638 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 96:
#line 640 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 97:
#line 642 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 98:
#line 647 "./awk.y"
{ want_assign = FALSE; ;
    break;}
case 99:
#line 649 "./awk.y"
{
		  if (do_lint && yyvsp[0].nodeval->type == Node_regex)
			warning("Regular expression on left of assignment.");
		  yyval.nodeval = node(yyvsp[-3].nodeval, yyvsp[-2].nodetypeval, yyvsp[0].nodeval);
		;
    break;}
case 100:
#line 655 "./awk.y"
{ yyval.nodeval = node(variable(yyvsp[0].sval, CAN_FREE, Node_var_array), Node_in_array, yyvsp[-3].nodeval); ;
    break;}
case 101:
#line 657 "./awk.y"
{
		  yyval.nodeval = node(yyvsp[0].nodeval, Node_K_getline,
			 node(yyvsp[-3].nodeval, Node_redirect_pipein, (NODE *) NULL));
		;
    break;}
case 102:
#line 662 "./awk.y"
{
		  if (do_lint && ! io_allowed && yyvsp[0].nodeval == NULL)
			warning("non-redirected getline undefined inside BEGIN or END action");
		  yyval.nodeval = node(yyvsp[-1].nodeval, Node_K_getline, yyvsp[0].nodeval);
		;
    break;}
case 103:
#line 668 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_and, yyvsp[0].nodeval); ;
    break;}
case 104:
#line 670 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_or, yyvsp[0].nodeval); ;
    break;}
case 105:
#line 672 "./awk.y"
{
		  if (yyvsp[-2].nodeval->type == Node_regex)
			warning("Regular expression on left of MATCH operator.");
		  yyval.nodeval = node(yyvsp[-2].nodeval, yyvsp[-1].nodetypeval, mk_rexp(yyvsp[0].nodeval));
		;
    break;}
case 106:
#line 678 "./awk.y"
{
		  yyval.nodeval = yyvsp[0].nodeval;
		  if (do_lint && tokstart[0] == '*') {
			/* possible C comment */
			int n = strlen(tokstart) - 1;
			if (tokstart[n] == '*')
				warning("regexp looks like a C comment, but is not");
		  }
		;
    break;}
case 107:
#line 688 "./awk.y"
{
		  yyval.nodeval = node(node(make_number(0.0),
				 Node_field_spec,
				 (NODE *) NULL),
		            Node_nomatch,
			    yyvsp[0].nodeval);
		;
    break;}
case 108:
#line 696 "./awk.y"
{ yyval.nodeval = node(variable(yyvsp[0].sval, CAN_FREE, Node_var_array), Node_in_array, yyvsp[-2].nodeval); ;
    break;}
case 109:
#line 698 "./awk.y"
{
		  if (do_lint && yyvsp[0].nodeval->type == Node_regex)
			warning("Regular expression on left of comparison.");
		  yyval.nodeval = node(yyvsp[-2].nodeval, yyvsp[-1].nodetypeval, yyvsp[0].nodeval);
		;
    break;}
case 110:
#line 704 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_less, yyvsp[0].nodeval); ;
    break;}
case 111:
#line 706 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_greater, yyvsp[0].nodeval); ;
    break;}
case 112:
#line 708 "./awk.y"
{ yyval.nodeval = node(yyvsp[-4].nodeval, Node_cond_exp, node(yyvsp[-2].nodeval, Node_if_branches, yyvsp[0].nodeval));;
    break;}
case 113:
#line 710 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 114:
#line 712 "./awk.y"
{ yyval.nodeval = node(yyvsp[-1].nodeval, Node_concat, yyvsp[0].nodeval); ;
    break;}
case 115:
#line 717 "./awk.y"
{ want_assign = FALSE; ;
    break;}
case 116:
#line 719 "./awk.y"
{ yyval.nodeval = node(yyvsp[-3].nodeval, yyvsp[-2].nodetypeval, yyvsp[0].nodeval); ;
    break;}
case 117:
#line 721 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_and, yyvsp[0].nodeval); ;
    break;}
case 118:
#line 723 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_or, yyvsp[0].nodeval); ;
    break;}
case 119:
#line 725 "./awk.y"
{
		  if (do_lint && ! io_allowed && yyvsp[0].nodeval == NULL)
			warning("non-redirected getline undefined inside BEGIN or END action");
		  yyval.nodeval = node(yyvsp[-1].nodeval, Node_K_getline, yyvsp[0].nodeval);
		;
    break;}
case 120:
#line 731 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 121:
#line 733 "./awk.y"
{ yyval.nodeval = node((NODE *) NULL, Node_nomatch, yyvsp[0].nodeval); ;
    break;}
case 122:
#line 735 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, yyvsp[-1].nodetypeval, mk_rexp(yyvsp[0].nodeval)); ;
    break;}
case 123:
#line 737 "./awk.y"
{ yyval.nodeval = node(variable(yyvsp[0].sval, CAN_FREE, Node_var_array), Node_in_array, yyvsp[-2].nodeval); ;
    break;}
case 124:
#line 739 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, yyvsp[-1].nodetypeval, yyvsp[0].nodeval); ;
    break;}
case 125:
#line 741 "./awk.y"
{ yyval.nodeval = node(yyvsp[-4].nodeval, Node_cond_exp, node(yyvsp[-2].nodeval, Node_if_branches, yyvsp[0].nodeval));;
    break;}
case 126:
#line 743 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 127:
#line 745 "./awk.y"
{ yyval.nodeval = node(yyvsp[-1].nodeval, Node_concat, yyvsp[0].nodeval); ;
    break;}
case 129:
#line 752 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_exp, yyvsp[0].nodeval); ;
    break;}
case 130:
#line 754 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_times, yyvsp[0].nodeval); ;
    break;}
case 131:
#line 756 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_quotient, yyvsp[0].nodeval); ;
    break;}
case 132:
#line 758 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_mod, yyvsp[0].nodeval); ;
    break;}
case 133:
#line 760 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_plus, yyvsp[0].nodeval); ;
    break;}
case 134:
#line 762 "./awk.y"
{ yyval.nodeval = node(yyvsp[-2].nodeval, Node_minus, yyvsp[0].nodeval); ;
    break;}
case 135:
#line 764 "./awk.y"
{ yyval.nodeval = node(yyvsp[-1].nodeval, Node_postincrement, (NODE *) NULL); ;
    break;}
case 136:
#line 766 "./awk.y"
{ yyval.nodeval = node(yyvsp[-1].nodeval, Node_postdecrement, (NODE *) NULL); ;
    break;}
case 137:
#line 771 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_not, (NODE *) NULL); ;
    break;}
case 138:
#line 773 "./awk.y"
{ yyval.nodeval = yyvsp[-1].nodeval; ;
    break;}
case 139:
#line 776 "./awk.y"
{ yyval.nodeval = snode(yyvsp[-1].nodeval, Node_builtin, (int) yyvsp[-3].lval); ;
    break;}
case 140:
#line 778 "./awk.y"
{ yyval.nodeval = snode(yyvsp[-1].nodeval, Node_builtin, (int) yyvsp[-3].lval); ;
    break;}
case 141:
#line 780 "./awk.y"
{
		if (do_lint)
			warning("call of `length' without parentheses is not portable");
		yyval.nodeval = snode((NODE *) NULL, Node_builtin, (int) yyvsp[0].lval);
		if (do_posix)
			warning("call of `length' without parentheses is deprecated by POSIX");
	  ;
    break;}
case 142:
#line 788 "./awk.y"
{
		yyval.nodeval = node(yyvsp[-1].nodeval, Node_func_call, make_string(yyvsp[-3].sval, strlen(yyvsp[-3].sval)));
		func_use(yyvsp[-3].sval, FUNC_USE);
		param_sanity(yyvsp[-1].nodeval);
		free(yyvsp[-3].sval);
	  ;
    break;}
case 144:
#line 796 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_preincrement, (NODE *) NULL); ;
    break;}
case 145:
#line 798 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_predecrement, (NODE *) NULL); ;
    break;}
case 146:
#line 800 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 147:
#line 802 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 148:
#line 805 "./awk.y"
{
		  if (yyvsp[0].nodeval->type == Node_val) {
			yyvsp[0].nodeval->numbr = -(force_number(yyvsp[0].nodeval));
			yyval.nodeval = yyvsp[0].nodeval;
		  } else
			yyval.nodeval = node(yyvsp[0].nodeval, Node_unary_minus, (NODE *) NULL);
		;
    break;}
case 149:
#line 813 "./awk.y"
{
		  /*
		   * was: $$ = $2
		   * POSIX semantics: force a conversion to numeric type
		   */
		  yyval.nodeval = node (make_number(0.0), Node_plus, yyvsp[0].nodeval);
		;
    break;}
case 150:
#line 824 "./awk.y"
{ yyval.nodeval = NULL; ;
    break;}
case 151:
#line 826 "./awk.y"
{ yyval.nodeval = yyvsp[0].nodeval; ;
    break;}
case 152:
#line 831 "./awk.y"
{ yyval.nodeval = variable(yyvsp[0].sval, CAN_FREE, Node_var); ;
    break;}
case 153:
#line 833 "./awk.y"
{
		if (yyvsp[-1].nodeval == NULL) {
			fatal("invalid subscript expression");
		} else if (yyvsp[-1].nodeval->rnode == NULL) {
			yyval.nodeval = node(variable(yyvsp[-3].sval, CAN_FREE, Node_var_array), Node_subscript, yyvsp[-1].nodeval->lnode);
			freenode(yyvsp[-1].nodeval);
		} else
			yyval.nodeval = node(variable(yyvsp[-3].sval, CAN_FREE, Node_var_array), Node_subscript, yyvsp[-1].nodeval);
		;
    break;}
case 154:
#line 843 "./awk.y"
{ yyval.nodeval = node(yyvsp[0].nodeval, Node_field_spec, (NODE *) NULL); ;
    break;}
case 156:
#line 851 "./awk.y"
{ yyerrok; ;
    break;}
case 157:
#line 855 "./awk.y"
{ yyerrok; ;
    break;}
case 160:
#line 864 "./awk.y"
{ yyerrok; want_assign = FALSE; ;
    break;}
case 161:
#line 867 "./awk.y"
{ yyerrok; ;
    break;}
}
   /* the action file gets copied in in place of this dollarsign */
#line 498 "/usr/lib/bison.simple"

  yyvsp -= yylen;
  yyssp -= yylen;
#ifdef YYLSP_NEEDED
  yylsp -= yylen;
#endif

#if YYDEBUG != 0
  if (yydebug)
    {
      short *ssp1 = yyss - 1;
      fprintf (stderr, "state stack now");
      while (ssp1 != yyssp)
	fprintf (stderr, " %d", *++ssp1);
      fprintf (stderr, "\n");
    }
#endif

  *++yyvsp = yyval;

#ifdef YYLSP_NEEDED
  yylsp++;
  if (yylen == 0)
    {
      yylsp->first_line = yylloc.first_line;
      yylsp->first_column = yylloc.first_column;
      yylsp->last_line = (yylsp-1)->last_line;
      yylsp->last_column = (yylsp-1)->last_column;
      yylsp->text = 0;
    }
  else
    {
      yylsp->last_line = (yylsp+yylen-1)->last_line;
      yylsp->last_column = (yylsp+yylen-1)->last_column;
    }
#endif

  /* 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 - YYNTBASE] + *yyssp;
  if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
    yystate = yytable[yystate];
  else
    yystate = yydefgoto[yyn - YYNTBASE];

  goto yynewstate;

yyerrlab:   /* here on detecting error */

  if (! yyerrstatus)
    /* If not already recovering from an error, report this error.  */
    {
      ++yynerrs;

#ifdef YYERROR_VERBOSE
      yyn = yypact[yystate];

      if (yyn > YYFLAG && yyn < YYLAST)
	{
	  int size = 0;
	  char *msg;
	  int x, count;

	  count = 0;
	  /* Start X at -yyn if nec to avoid negative indexes in yycheck.  */
	  for (x = (yyn < 0 ? -yyn : 0);
	       x < (sizeof(yytname) / sizeof(char *)); x++)
	    if (yycheck[x + yyn] == x)
	      size += strlen(yytname[x]) + 15, count++;
	  msg = (char *) malloc(size + 15);
	  if (msg != 0)
	    {
	      strcpy(msg, "parse error");

	      if (count < 5)
		{
		  count = 0;
		  for (x = (yyn < 0 ? -yyn : 0);
		       x < (sizeof(yytname) / sizeof(char *)); x++)
		    if (yycheck[x + yyn] == x)
		      {
			strcat(msg, count == 0 ? ", expecting `" : " or `");
			strcat(msg, yytname[x]);
			strcat(msg, "'");
			count++;
		      }
		}
	      yyerror(msg);
	      free(msg);
	    }
	  else
	    yyerror ("parse error; also virtual memory exceeded");
	}
      else
#endif /* YYERROR_VERBOSE */
	yyerror("parse error");
    }

  goto yyerrlab1;
yyerrlab1:   /* here on error raised explicitly by an action */

  if (yyerrstatus == 3)
    {
      /* if just tried and failed to reuse lookahead token after an error, discard it.  */

      /* return failure if at end of input */
      if (yychar == YYEOF)
	YYABORT;

#if YYDEBUG != 0
      if (yydebug)
	fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
#endif

      yychar = YYEMPTY;
    }

  /* Else will try to reuse lookahead token
     after shifting the error token.  */

  yyerrstatus = 3;		/* Each real token shifted decrements this */

  goto yyerrhandle;

yyerrdefault:  /* current state does not do anything special for the error token. */

#if 0
  /* This is wrong; only states that explicitly want error tokens
     should shift them.  */
  yyn = yydefact[yystate];  /* If its default is to accept any token, ok.  Otherwise pop it.*/
  if (yyn) goto yydefault;
#endif

yyerrpop:   /* pop the current state because it cannot handle the error token */

  if (yyssp == yyss) YYABORT;
  yyvsp--;
  yystate = *--yyssp;
#ifdef YYLSP_NEEDED
  yylsp--;
#endif

#if YYDEBUG != 0
  if (yydebug)
    {
      short *ssp1 = yyss - 1;
      fprintf (stderr, "Error: state stack now");
      while (ssp1 != yyssp)
	fprintf (stderr, " %d", *++ssp1);
      fprintf (stderr, "\n");
    }
#endif

yyerrhandle:

  yyn = yypact[yystate];
  if (yyn == YYFLAG)
    goto yyerrdefault;

  yyn += YYTERROR;
  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
    goto yyerrdefault;

  yyn = yytable[yyn];
  if (yyn < 0)
    {
      if (yyn == YYFLAG)
	goto yyerrpop;
      yyn = -yyn;
      goto yyreduce;
    }
  else if (yyn == 0)
    goto yyerrpop;

  if (yyn == YYFINAL)
    YYACCEPT;

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Shifting error token, ");
#endif

  *++yyvsp = yylval;
#ifdef YYLSP_NEEDED
  *++yylsp = yylloc;
#endif

  yystate = yyn;
  goto yynewstate;
}
#line 870 "./awk.y"


struct token {
	const char *operator;		/* text to match */
	NODETYPE value;		/* node type */
	int class;		/* lexical class */
	unsigned flags;		/* # of args. allowed and compatability */
#	define	ARGS	0xFF	/* 0, 1, 2, 3 args allowed (any combination */
#	define	A(n)	(1<<(n))
#	define	VERSION	0xFF00	/* old awk is zero */
#	define	NOT_OLD		0x0100	/* feature not in old awk */
#	define	NOT_POSIX	0x0200	/* feature not in POSIX */
#	define	GAWKX		0x0400	/* gawk extension */
#	define	RESX		0x0800	/* Bell Labs Research extension */
	NODE *(*ptr)();		/* function that implements this keyword */
};

extern NODE
	*do_exp(),	*do_getline(),	*do_index(),	*do_length(),
	*do_sqrt(),	*do_log(),	*do_sprintf(),	*do_substr(),
	*do_split(),	*do_system(),	*do_int(),	*do_close(),
	*do_atan2(),	*do_sin(),	*do_cos(),	*do_rand(),
	*do_srand(),	*do_match(),	*do_tolower(),	*do_toupper(),
	*do_sub(),	*do_gsub(),	*do_strftime(),	*do_systime(),
	*do_fflush();

/* Tokentab is sorted ascii ascending order, so it can be binary searched. */

static struct token tokentab[] = {
{"BEGIN",	Node_illegal,	 LEX_BEGIN,	0,		0},
{"END",		Node_illegal,	 LEX_END,	0,		0},
#ifdef BITOPS
{"and",		Node_builtin,    LEX_BUILTIN,	GAWKX|A(2),	do_and},
#endif /* BITOPS */
{"atan2",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(2),	do_atan2},
{"break",	Node_K_break,	 LEX_BREAK,	0,		0},
{"close",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(1),	do_close},
#ifdef BITOPS
{"compl",	Node_builtin,    LEX_BUILTIN,	GAWKX|A(1),	do_compl},
#endif /* BITOPS */
{"continue",	Node_K_continue, LEX_CONTINUE,	0,		0},
{"cos",		Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(1),	do_cos},
{"delete",	Node_K_delete,	 LEX_DELETE,	NOT_OLD,	0},
{"do",		Node_K_do,	 LEX_DO,	NOT_OLD,	0},
{"else",	Node_illegal,	 LEX_ELSE,	0,		0},
{"exit",	Node_K_exit,	 LEX_EXIT,	0,		0},
{"exp",		Node_builtin,	 LEX_BUILTIN,	A(1),		do_exp},
{"fflush",	Node_builtin,	 LEX_BUILTIN,	RESX|A(0)|A(1), do_fflush},
{"for",		Node_K_for,	 LEX_FOR,	0,		0},
{"func",	Node_K_function, LEX_FUNCTION,	NOT_POSIX|NOT_OLD,	0},
{"function",	Node_K_function, LEX_FUNCTION,	NOT_OLD,	0},
{"gensub",	Node_builtin,	 LEX_BUILTIN,	GAWKX|A(3)|A(4), do_gensub},
{"getline",	Node_K_getline,	 LEX_GETLINE,	NOT_OLD,	0},
{"gsub",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(2)|A(3), do_gsub},
{"if",		Node_K_if,	 LEX_IF,	0,		0},
{"in",		Node_illegal,	 LEX_IN,	0,		0},
{"index",	Node_builtin,	 LEX_BUILTIN,	A(2),		do_index},
{"int",		Node_builtin,	 LEX_BUILTIN,	A(1),		do_int},
{"length",	Node_builtin,	 LEX_LENGTH,	A(0)|A(1),	do_length},
{"log",		Node_builtin,	 LEX_BUILTIN,	A(1),		do_log},
#ifdef BITOPS
{"lshift",	Node_builtin,    LEX_BUILTIN,	GAWKX|A(2),	do_lshift},
#endif /* BITOPS */
{"match",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(2),	do_match},
{"next",	Node_K_next,	 LEX_NEXT,	0,		0},
{"nextfile",	Node_K_nextfile, LEX_NEXTFILE,	GAWKX,		0},
#ifdef BITOPS
{"or",		Node_builtin,    LEX_BUILTIN,	GAWKX|A(2),	do_or},
#endif /* BITOPS */
{"print",	Node_K_print,	 LEX_PRINT,	0,		0},
{"printf",	Node_K_printf,	 LEX_PRINTF,	0,		0},
{"rand",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(0),	do_rand},
{"return",	Node_K_return,	 LEX_RETURN,	NOT_OLD,	0},
#ifdef BITOPS
{"rshift",	Node_builtin,    LEX_BUILTIN,	GAWKX|A(2),	do_rshift},
#endif /* BITOPS */
{"sin",		Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(1),	do_sin},
{"split",	Node_builtin,	 LEX_BUILTIN,	A(2)|A(3),	do_split},
{"sprintf",	Node_builtin,	 LEX_BUILTIN,	0,		do_sprintf},
{"sqrt",	Node_builtin,	 LEX_BUILTIN,	A(1),		do_sqrt},
{"srand",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(0)|A(1), do_srand},
{"strftime",	Node_builtin,	 LEX_BUILTIN,	GAWKX|A(0)|A(1)|A(2), do_strftime},
#ifdef BITOPS
{"strtonum",	Node_builtin,    LEX_BUILTIN,	GAWKX|A(1),	do_strtonum},
#endif /* BITOPS */
{"sub",		Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(2)|A(3), do_sub},
{"substr",	Node_builtin,	 LEX_BUILTIN,	A(2)|A(3),	do_substr},
{"system",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(1),	do_system},
{"systime",	Node_builtin,	 LEX_BUILTIN,	GAWKX|A(0),	do_systime},
{"tolower",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(1),	do_tolower},
{"toupper",	Node_builtin,	 LEX_BUILTIN,	NOT_OLD|A(1),	do_toupper},
{"while",	Node_K_while,	 LEX_WHILE,	0,		0},
#ifdef BITOPS
{"xor",		Node_builtin,    LEX_BUILTIN,	GAWKX|A(2),	do_xor},
#endif /* BITOPS */
};

/* yyerror --- print a syntax error message, show where */

#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
static void
yyerror(const char *m, ...)
#else
/* VARARGS0 */
static void
yyerror(va_alist)
va_dcl
#endif
{
	va_list args;
	const char *mesg = NULL;
	register char *bp, *cp;
	char *scan;
	char buf[120];
	static char end_of_file_line[] = "(END OF FILE)";

	errcount++;
	/* Find the current line in the input file */
	if (lexptr && lexeme) {
		if (thisline == NULL) {
			cp = lexeme;
			if (*cp == '\n') {
				cp--;
				mesg = "unexpected newline";
			}
			for (; cp != lexptr_begin && *cp != '\n'; --cp)
				continue;
			if (*cp == '\n')
				cp++;
			thisline = cp;
		}
		/* NL isn't guaranteed */
		bp = lexeme;
		while (bp < lexend && *bp && *bp != '\n')
			bp++;
	} else {
		thisline = end_of_file_line;
		bp = thisline + strlen(thisline);
	}
	msg("%.*s", (int) (bp - thisline), thisline);
	bp = buf;
	cp = buf + sizeof(buf) - 24;	/* 24 more than longest msg. input */
	if (lexptr != NULL) {
		scan = thisline;
		while (bp < cp && scan < lexeme)
			if (*scan++ == '\t')
				*bp++ = '\t';
			else
				*bp++ = ' ';
		*bp++ = '^';
		*bp++ = ' ';
	}
#if defined(HAVE_STDARG_H) && defined(__STDC__) && __STDC__
	va_start(args, m);
	if (mesg == NULL)
		mesg = m;
#else
	va_start(args);
	if (mesg == NULL)
		mesg = va_arg(args, char *);
#endif
	strcpy(bp, mesg);
	err("", buf, args);
	va_end(args);
}

/* get_src_buf --- read the next buffer of source program */

static char *
get_src_buf()
{
	static int samefile = FALSE;
	static int nextfile = 0;
	static char *buf = NULL;
	static int fd;
	int n;
	register char *scan;
	static int len = 0;
	static int did_newline = FALSE;
	int newfile;
	struct stat sbuf;

#	define	SLOP	128	/* enough space to hold most source lines */

again:
	newfile = FALSE;
	if (nextfile > numfiles)
		return NULL;

	if (srcfiles[nextfile].stype == CMDLINE) {
		if (len == 0) {
			len = strlen(srcfiles[nextfile].val);
			if (len == 0) {
				/*
				 * Yet Another Special case:
				 *	gawk '' /path/name
				 * Sigh.
				 */
				static int warned = FALSE;

				if (do_lint && ! warned) {
					warned = TRUE;
					warning("empty program text on command line");
				}
				++nextfile;
				goto again;
			}
			sourceline = 1;
			lexptr = lexptr_begin = srcfiles[nextfile].val;
			lexend = lexptr + len;
		} else if (! did_newline && *(lexptr-1) != '\n') {
			/*
			 * The following goop is to ensure that the source
			 * ends with a newline and that the entire current
			 * line is available for error messages.
			 */
			int offset;

			did_newline = TRUE;
			offset = lexptr - lexeme;
			for (scan = lexeme; scan > lexptr_begin; scan--)
				if (*scan == '\n') {
					scan++;
					break;
				}
			len = lexptr - scan;
			emalloc(buf, char *, len+1, "get_src_buf");
			memcpy(buf, scan, len);
			thisline = buf;
			lexptr = buf + len;
			*lexptr = '\n';
			lexeme = lexptr - offset;
			lexptr_begin = buf;
			lexend = lexptr + 1;
		} else {
			len = 0;
			lexeme = lexptr = lexptr_begin = NULL;
		}
		if (lexptr == NULL && ++nextfile <= numfiles)
			goto again;
		return lexptr;
	}
	if (! samefile) {
		source = srcfiles[nextfile].val;
		if (source == NULL) {
			if (buf != NULL) {
				free(buf);
				buf = NULL;
			}
			len = 0;
			return lexeme = lexptr = lexptr_begin = NULL;
		}
		fd = pathopen(source);
		if (fd <= INVALID_HANDLE) {
			char *in;

			/* suppress file name and line no. in error mesg */
			in = source;
			source = NULL;
			fatal("can't open source file \"%s\" for reading (%s)",
				in, strerror(errno));
		}
		len = optimal_bufsize(fd, & sbuf);
		newfile = TRUE;
		if (buf != NULL)
			free(buf);
		emalloc(buf, char *, len + SLOP, "get_src_buf");
		lexptr_begin = buf + SLOP;
		samefile = TRUE;
		sourceline = 1;
	} else {
		/*
		 * Here, we retain the current source line (up to length SLOP)
		 * in the beginning of the buffer that was overallocated above
		 */
		int offset;
		int linelen;

		offset = lexptr - lexeme;
		for (scan = lexeme; scan > lexptr_begin; scan--)
			if (*scan == '\n') {
				scan++;
				break;
			}
		linelen = lexptr - scan;
		if (linelen > SLOP)
			linelen = SLOP;
		thisline = buf + SLOP - linelen;
		memcpy(thisline, scan, linelen);
		lexeme = buf + SLOP - offset;
		lexptr_begin = thisline;
	}
	n = read(fd, buf + SLOP, len);
	if (n == -1)
		fatal("can't read sourcefile \"%s\" (%s)",
			source, strerror(errno));
	if (n == 0) {
		if (newfile) {
			static int warned = FALSE;

			if (do_lint && ! warned) {
				warned = TRUE;
				warning("source file `%s' is empty", source);
			}
		}
		if (fileno(stdin) != fd)	/* safety */
			close(fd);
		samefile = FALSE;
		nextfile++;
		if (lexeme)
			*lexeme = '\0';
		len = 0;
		goto again;
	}
	lexptr = buf + SLOP;
	lexend = lexptr + n;
	return buf;
}

/* tokadd --- add a character to the token buffer */

#define	tokadd(x) (*tok++ = (x), tok == tokend ? tokexpand() : tok)

/* tokexpand --- grow the token buffer */

char *
tokexpand()
{
	static int toksize = 60;
	int tokoffset;

	tokoffset = tok - tokstart;
	toksize *= 2;
	if (tokstart != NULL)
		erealloc(tokstart, char *, toksize, "tokexpand");
	else
		emalloc(tokstart, char *, toksize, "tokexpand");
	tokend = tokstart + toksize;
	tok = tokstart + tokoffset;
	return tok;
}

/* nextc --- get the next input character */

#if DEBUG
int
nextc()
{
	int c;

	if (lexptr && lexptr < lexend)
		c = *lexptr++;
	else if (get_src_buf())
		c = *lexptr++;
	else
		c = EOF;

	return c;
}
#else
#define	nextc()	((lexptr && lexptr < lexend) ? \
			*lexptr++ : \
			(get_src_buf() ? *lexptr++ : EOF) \
		)
#endif

/* pushback --- push a character back on the input */

#define pushback() (lexptr && lexptr > lexptr_begin ? lexptr-- : lexptr)

/* allow_newline --- allow newline after &&, ||, ? and : */

static void
allow_newline()
{
	int c;

	for (;;) {
		c = nextc();
		if (c == EOF)
			break;
		if (c == '#') {
			while ((c = nextc()) != '\n' && c != EOF)
				continue;
			if (c == EOF)
				break;
		}
		if (c == '\n')
			sourceline++;
		if (! isspace(c)) {
			pushback();
			break;
		}
	}
}

/* yylex --- Read the input and turn it into tokens. */

static int
yylex()
{
	register int c, c1;
	int seen_e = FALSE;		/* These are for numbers */
	int seen_point = FALSE;
	int esc_seen;		/* for literal strings */
	int low, mid, high;
	static int did_newline = FALSE;
	char *tokkey;
	static int lasttok = 0, eof_warned = FALSE;
	int inhex = FALSE;

	if (nextc() == EOF) {
		if (lasttok != NEWLINE) {
			lasttok = NEWLINE;
			if (do_lint && ! eof_warned) {
				warning("source file does not end in newline");
				eof_warned = TRUE;
			}
			return NEWLINE;	/* fake it */
		}
		return 0;
	}
	pushback();
#ifdef OS2
	/*
	 * added for OS/2's extproc feature of cmd.exe
	 * (like #! in BSD sh)
	 */
	if (strncasecmp(lexptr, "extproc ", 8) == 0) {
		while (*lexptr && *lexptr != '\n')
			lexptr++;
	}
#endif
	lexeme = lexptr;
	thisline = NULL;
	if (want_regexp) {
		int in_brack = 0;	/* count brackets, [[:alnum:]] allowed */
		/*
		 * Counting brackets is non-trivial. [[] is ok,
		 * and so is [\]], with a point being that /[/]/ as a regexp
		 * constant has to work.
		 *
		 * Do not count [ or ] if either one is preceded by a \.
		 * A `[' should be counted if
		 *  a) it is the first one so far (in_brack == 0)
		 *  b) it is the `[' in `[:'
		 * A ']' should be counted if not preceded by a \, since
		 * it is either closing `:]' or just a plain list.
		 * According to POSIX, []] is how you put a ] into a set.
		 * Try to handle that too.
		 *
		 * The code for \ handles \[ and \].
		 */

		want_regexp = FALSE;
		tok = tokstart;
		for (;;) {
			c = nextc();
			switch (c) {
			case '[':
				/* one day check for `.' and `=' too */
				if ((c1 = nextc()) == ':' || in_brack == 0)
					in_brack++;
				pushback();
				break;
			case ']':
				if (tokstart[0] == '['
				    && (tok == tokstart + 1
					|| (tok == tokstart + 2
					    && tokstart[1] == '^')))
					/* do nothing */;
				else
					in_brack--;
				break;
			case '\\':
				if ((c = nextc()) == EOF) {
					yyerror("unterminated regexp ends with \\ at end of file");
					return lasttok = REGEXP; /* kludge */
				} else if (c == '\n') {
					sourceline++;
					continue;
				} else {
					tokadd('\\');
					tokadd(c);
					continue;
				}
				break;
			case '/':	/* end of the regexp */
				if (in_brack > 0)
					break;

				pushback();
				tokadd('\0');
				yylval.sval = tokstart;
				return lasttok = REGEXP;
			case '\n':
				pushback();
				yyerror("unterminated regexp");
				return lasttok = REGEXP;	/* kludge */
			case EOF:
				yyerror("unterminated regexp at end of file");
				return lasttok = REGEXP;	/* kludge */
			}
			tokadd(c);
		}
	}
retry:
	while ((c = nextc()) == ' ' || c == '\t')
		continue;

	lexeme = lexptr ? lexptr - 1 : lexptr;
	thisline = NULL;
	tok = tokstart;
	yylval.nodetypeval = Node_illegal;

	switch (c) {
	case EOF:
		if (lasttok != NEWLINE) {
			lasttok = NEWLINE;
			if (do_lint && ! eof_warned) {
				warning("source file does not end in newline");
				eof_warned = TRUE;
			}
			return NEWLINE;	/* fake it */
		}
		return 0;

	case '\n':
		sourceline++;
		return lasttok = NEWLINE;

	case '#':		/* it's a comment */
		while ((c = nextc()) != '\n') {
			if (c == EOF) {
				if (lasttok != NEWLINE) {
					lasttok = NEWLINE;
					if (do_lint && ! eof_warned) {
						warning(
				"source file does not end in newline");
						eof_warned = TRUE;
					}
					return NEWLINE;	/* fake it */
				}
				return 0;
			}
		}
		sourceline++;
		return lasttok = NEWLINE;

	case '\\':
#ifdef RELAXED_CONTINUATION
		/*
		 * This code puports to allow comments and/or whitespace
		 * after the `\' at the end of a line used for continuation.
		 * Use it at your own risk. We think it's a bad idea, which
		 * is why it's not on by default.
		 */
		if (! do_traditional) {
			/* strip trailing white-space and/or comment */
			while ((c = nextc()) == ' ' || c == '\t')
				continue;
			if (c == '#') {
				if (do_lint)
					warning(
		"use of `\\ #...' line continuation is not portable");
				while ((c = nextc()) != '\n')
					if (c == EOF)
						break;
			}
			pushback();
		}
#endif /* RELAXED_CONTINUATION */
		if (nextc() == '\n') {
			sourceline++;
			goto retry;
		} else {
			yyerror("backslash not last character on line");
			exit(1);
		}
		break;

	case '$':
		want_assign = TRUE;
		return lasttok = '$';

	case ':':
	case '?':
		allow_newline();
		return lasttok = c;

	case ')':
	case ']':
	case '(':	
	case ';':
	case '{':
	case ',':
		want_assign = FALSE;
		/* fall through */
	case '[':
		return lasttok = c;

	case '*':
		if ((c = nextc()) == '=') {
			yylval.nodetypeval = Node_assign_times;
			return lasttok = ASSIGNOP;
		} else if (do_posix) {
			pushback();
			return lasttok = '*';
		} else if (c == '*') {
			/* make ** and **= aliases for ^ and ^= */
			static int did_warn_op = FALSE, did_warn_assgn = FALSE;

			if (nextc() == '=') {
				if (do_lint && ! did_warn_assgn) {
					did_warn_assgn = TRUE;
					warning("**= is not allowed by POSIX");
					warning("operator `**=' is not supported in old awk");
				}
				yylval.nodetypeval = Node_assign_exp;
				return ASSIGNOP;
			} else {
				pushback();
				if (do_lint && ! did_warn_op) {
					did_warn_op = TRUE;
					warning("** is not allowed by POSIX");
					warning("operator `**' is not supported in old awk");
				}
				return lasttok = '^';
			}
		}
		pushback();
		return lasttok = '*';

	case '/':
		if (want_assign) {
			if (nextc() == '=') {
				yylval.nodetypeval = Node_assign_quotient;
				return lasttok = ASSIGNOP;
			}
			pushback();
		}
		return lasttok = '/';

	case '%':
		if (nextc() == '=') {
			yylval.nodetypeval = Node_assign_mod;
			return lasttok = ASSIGNOP;
		}
		pushback();
		return lasttok = '%';

	case '^':
	{
		static int did_warn_op = FALSE, did_warn_assgn = FALSE;

		if (nextc() == '=') {
			if (do_lint && ! did_warn_assgn) {
				did_warn_assgn = TRUE;
				warning("operator `^=' is not supported in old awk");
			}
			yylval.nodetypeval = Node_assign_exp;
			return lasttok = ASSIGNOP;
		}
		pushback();
		if (do_lint && ! did_warn_op) {
			did_warn_op = TRUE;
			warning("operator `^' is not supported in old awk");
		}
		return lasttok = '^';
	}

	case '+':
		if ((c = nextc()) == '=') {
			yylval.nodetypeval = Node_assign_plus;
			return lasttok = ASSIGNOP;
		}
		if (c == '+')
			return lasttok = INCREMENT;
		pushback();
		return lasttok = '+';

	case '!':
		if ((c = nextc()) == '=') {
			yylval.nodetypeval = Node_notequal;
			return lasttok = RELOP;
		}
		if (c == '~') {
			yylval.nodetypeval = Node_nomatch;
			want_assign = FALSE;
			return lasttok = MATCHOP;
		}
		pushback();
		return lasttok = '!';

	case '<':
		if (nextc() == '=') {
			yylval.nodetypeval = Node_leq;
			return lasttok = RELOP;
		}
		yylval.nodetypeval = Node_less;
		pushback();
		return lasttok = '<';

	case '=':
		if (nextc() == '=') {
			yylval.nodetypeval = Node_equal;
			return lasttok = RELOP;
		}
		yylval.nodetypeval = Node_assign;
		pushback();
		return lasttok = ASSIGNOP;

	case '>':
		if ((c = nextc()) == '=') {
			yylval.nodetypeval = Node_geq;
			return lasttok = RELOP;
		} else if (c == '>') {
			yylval.nodetypeval = Node_redirect_append;
			return lasttok = APPEND_OP;
		}
		yylval.nodetypeval = Node_greater;
		pushback();
		return lasttok = '>';

	case '~':
		yylval.nodetypeval = Node_match;
		want_assign = FALSE;
		return lasttok = MATCHOP;

	case '}':
		/*
		 * Added did newline stuff.  Easier than
		 * hacking the grammar.
		 */
		if (did_newline) {
			did_newline = FALSE;
			return lasttok = c;
		}
		did_newline++;
		--lexptr;	/* pick up } next time */
		return lasttok = NEWLINE;

	case '"':
		esc_seen = FALSE;
		while ((c = nextc()) != '"') {
			if (c == '\n') {
				pushback();
				yyerror("unterminated string");
				exit(1);
			}
			if (c == '\\') {
				c = nextc();
				if (c == '\n') {
					sourceline++;
					continue;
				}
				esc_seen = TRUE;
				tokadd('\\');
			}
			if (c == EOF) {
				pushback();
				yyerror("unterminated string");
				exit(1);
			}
			tokadd(c);
		}
		yylval.nodeval = make_str_node(tokstart,
					tok - tokstart, esc_seen ? SCAN : 0);
		yylval.nodeval->flags |= PERM;
		return lasttok = YSTRING;

	case '-':
		if ((c = nextc()) == '=') {
			yylval.nodetypeval = Node_assign_minus;
			return lasttok = ASSIGNOP;
		}
		if (c == '-')
			return lasttok = DECREMENT;
		pushback();
		return lasttok = '-';

	case '.':
		c = nextc();
		pushback();
		if (! isdigit(c))
			return lasttok = '.';
		else
			c = '.';
		/* FALL THROUGH */
	case '0':
	case '1':
	case '2':
	case '3':
	case '4':
	case '5':
	case '6':
	case '7':
	case '8':
	case '9':
		/* It's a number */
		for (;;) {
			int gotnumber = FALSE;

			tokadd(c);
			switch (c) {
#ifdef BITOPS
			case 'x':
			case 'X':
				if (do_traditional)
					goto done;
				if (tok == tokstart + 2)
					inhex = TRUE;
				break;
#endif /* BITOTS */
			case '.':
				if (seen_point) {
					gotnumber = TRUE;
					break;
				}
				seen_point = TRUE;
				break;
			case 'e':
			case 'E':
				if (inhex)
					break;
				if (seen_e) {
					gotnumber = TRUE;
					break;
				}
				seen_e = TRUE;
				if ((c = nextc()) == '-' || c == '+')
					tokadd(c);
				else
					pushback();
				break;
#ifdef BITOPS
			case 'a':
			case 'A':
			case 'b':
			case 'B':
			case 'c':
			case 'C':
			case 'D':
			case 'd':
			case 'f':
			case 'F':
				if (do_traditional || ! inhex)
					goto done;
				/* fall through */
#endif
			case '0':
			case '1':
			case '2':
			case '3':
			case '4':
			case '5':
			case '6':
			case '7':
			case '8':
			case '9':
				break;
			default:
			done:
				gotnumber = TRUE;
			}
			if (gotnumber)
				break;
			c = nextc();
		}
		if (c != EOF)
			pushback();
		else if (do_lint && ! eof_warned) {
			warning("source file does not end in newline");
			eof_warned = TRUE;
		}
		tokadd('\0');
#ifdef BITOPS
		if (! do_traditional && isnondecimal(tokstart))
			yylval.nodeval = make_number(nondec2awknum(tokstart, strlen(tokstart)));
		else
#endif /* BITOPS */
		yylval.nodeval = make_number(atof(tokstart));
		yylval.nodeval->flags |= PERM;
		return lasttok = YNUMBER;

	case '&':
		if ((c = nextc()) == '&') {
			yylval.nodetypeval = Node_and;
			allow_newline();
			want_assign = FALSE;
			return lasttok = LEX_AND;
		}
		pushback();
		return lasttok = '&';

	case '|':
		if ((c = nextc()) == '|') {
			yylval.nodetypeval = Node_or;
			allow_newline();
			want_assign = FALSE;
			return lasttok = LEX_OR;
		}
		pushback();
		return lasttok = '|';
	}

	if (c != '_' && ! isalpha(c)) {
		yyerror("Invalid char '%c' in expression\n", c);
		exit(1);
	}

	/* it's some type of name-type-thing.  Find its length. */
	tok = tokstart;
	while (is_identchar(c)) {
		tokadd(c);
		c = nextc();
	}
	tokadd('\0');
	emalloc(tokkey, char *, tok - tokstart, "yylex");
	memcpy(tokkey, tokstart, tok - tokstart);
	if (c != EOF)
		pushback();
	else if (do_lint && ! eof_warned) {
		warning("source file does not end in newline");
		eof_warned = TRUE;
	}

	/* See if it is a special token. */
	low = 0;
	high = (sizeof(tokentab) / sizeof(tokentab[0])) - 1;
	while (low <= high) {
		int i;

		mid = (low + high) / 2;
		c = *tokstart - tokentab[mid].operator[0];
		i = c ? c : strcmp(tokstart, tokentab[mid].operator);

		if (i < 0)		/* token < mid */
			high = mid - 1;
		else if (i > 0)		/* token > mid */
			low = mid + 1;
		else {
			if (do_lint) {
				if (tokentab[mid].flags & GAWKX)
					warning("%s() is a gawk extension",
						tokentab[mid].operator);
				if (tokentab[mid].flags & RESX)
					warning("%s() is a Bell Labs extension",
						tokentab[mid].operator);
				if (tokentab[mid].flags & NOT_POSIX)
					warning("POSIX does not allow %s",
						tokentab[mid].operator);
			}
			if (do_lint_old && (tokentab[mid].flags & NOT_OLD))
				warning("%s is not supported in old awk",
						tokentab[mid].operator);
			if ((do_traditional && (tokentab[mid].flags & GAWKX))
			    || (do_posix && (tokentab[mid].flags & NOT_POSIX)))
				break;
			if (tokentab[mid].class == LEX_BUILTIN
			    || tokentab[mid].class == LEX_LENGTH
			   )
				yylval.lval = mid;
			else
				yylval.nodetypeval = tokentab[mid].value;

			free(tokkey);
			return lasttok = tokentab[mid].class;
		}
	}

	yylval.sval = tokkey;
	if (*lexptr == '(')
		return lasttok = FUNC_CALL;
	else {
		want_assign = TRUE;
		return lasttok = NAME;
	}
}

/* node_common --- common code for allocating a new node */

static NODE *
node_common(op)
NODETYPE op;
{
	register NODE *r;

	getnode(r);
	r->type = op;
	r->flags = MALLOC;
	/* if lookahead is NL, lineno is 1 too high */
	if (lexeme && *lexeme == '\n')
		r->source_line = sourceline - 1;
	else
		r->source_line = sourceline;
	r->source_file = source;
	return r;
}

/* node --- allocates a node with defined lnode and rnode. */

NODE *
node(left, op, right)
NODE *left, *right;
NODETYPE op;
{
	register NODE *r;

	r = node_common(op);
	r->lnode = left;
	r->rnode = right;
	return r;
}

/* snode ---	allocate a node with defined subnode and proc for builtin
		functions. Checks for arg. count and supplies defaults where
		possible. */

static NODE *
snode(subn, op, idx)
NODETYPE op;
int idx;
NODE *subn;
{
	register NODE *r;
	register NODE *n;
	int nexp = 0;
	int args_allowed;

	r = node_common(op);

	/* traverse expression list to see how many args. given */
	for (n = subn; n != NULL; n = n->rnode) {
		nexp++;
		if (nexp > 3)
			break;
	}

	/* check against how many args. are allowed for this builtin */
	args_allowed = tokentab[idx].flags & ARGS;
	if (args_allowed && (args_allowed & A(nexp)) == 0)
		fatal("%s() cannot have %d argument%c",
			tokentab[idx].operator, nexp, nexp == 1 ? ' ' : 's');

	r->proc = tokentab[idx].ptr;

	/* special case processing for a few builtins */
	/*
	 * FIXME: go through these to make sure that everything done
	 *	  here is really right. Move anything that's not into
	 *	  the corresponding routine.
	 */
	if (nexp == 0 && r->proc == do_length) {
		subn = node(node(make_number(0.0), Node_field_spec, (NODE *) NULL),
		            Node_expression_list,
			    (NODE *) NULL);
	} else if (r->proc == do_match) {
		if (subn->rnode->lnode->type != Node_regex)
			subn->rnode->lnode = mk_rexp(subn->rnode->lnode);
	} else if (r->proc == do_sub || r->proc == do_gsub) {
		if (subn->lnode->type != Node_regex)
			subn->lnode = mk_rexp(subn->lnode);
		if (nexp == 2)
			append_right(subn, node(node(make_number(0.0),
						     Node_field_spec,
						     (NODE *) NULL),
					        Node_expression_list,
						(NODE *) NULL));
		else if (subn->rnode->rnode->lnode->type == Node_val) {
			if (do_lint)
				warning("string literal as last arg of substitute");
		} else if (! isassignable(subn->rnode->rnode->lnode))
			yyerror("%s third parameter is not a changeable object",
				r->proc == do_sub ? "sub" : "gsub");
	} else if (r->proc == do_gensub) {
		if (subn->lnode->type != Node_regex)
			subn->lnode = mk_rexp(subn->lnode);
		if (nexp == 3)
			append_right(subn, node(node(make_number(0.0),
						     Node_field_spec,
						     (NODE *) NULL),
					        Node_expression_list,
						(NODE *) NULL));
	} else if (r->proc == do_split) {
		if (nexp == 2)
			append_right(subn,
			    node(FS_node, Node_expression_list, (NODE *) NULL));
		n = subn->rnode->rnode->lnode;
		if (n->type != Node_regex)
			subn->rnode->rnode->lnode = mk_rexp(n);
		if (nexp == 2)
			subn->rnode->rnode->lnode->re_flags |= FS_DFLT;
	}

	r->subnode = subn;
	return r;
}

/*
 * mkrangenode:
 * This allocates a Node_line_range node with defined condpair and
 * zeroes the trigger word to avoid the temptation of assuming that calling
 * 'node( foo, Node_line_range, 0)' will properly initialize 'triggered'. 
 * Otherwise like node().
 */

static NODE *
mkrangenode(cpair)
NODE *cpair;
{
	register NODE *r;

	getnode(r);
	r->type = Node_line_range;
	r->condpair = cpair;
	r->triggered = FALSE;
	return r;
}

/* make_for_loop --- build a for loop */

static NODE *
make_for_loop(init, cond, incr)
NODE *init, *cond, *incr;
{
	register FOR_LOOP_HEADER *r;
	NODE *n;

	emalloc(r, FOR_LOOP_HEADER *, sizeof(FOR_LOOP_HEADER), "make_for_loop");
	getnode(n);
	n->type = Node_illegal;
	r->init = init;
	r->cond = cond;
	r->incr = incr;
	n->sub.nodep.r.hd = r;
	return n;
}

/* dup_parms --- return TRUE if there are duplicate parameters */

static int
dup_parms(func)
NODE *func;
{
	register NODE *np;
	char *fname, **names;
	int count, i, j, dups;
	NODE *params;

	if (func == NULL)	/* error earlier */
		return TRUE;

	fname = func->param;
	count = func->param_cnt;
	params = func->rnode;

	if (count == 0)		/* no args, no problem */
		return FALSE;

	if (params == NULL)	/* error earlier */
		return TRUE;

	emalloc(names, char **, count * sizeof(char *), "dup_parms");

	i = 0;
	for (np = params; np != NULL; np = np->rnode) {
		if (np->param == NULL) { /* error earlier, give up, go home */
			free(names);
			return TRUE;
		}
		names[i++] = np->param;
	}

	dups = 0;
	for (i = 1; i < count; i++) {
		for (j = 0; j < i; j++) {
			if (strcmp(names[i], names[j]) == 0) {
				dups++;
				error(
	"function `%s': parameter #%d, `%s', duplicates parameter #%d",
					fname, i+1, names[j], j+1);
			}
		}
	}

	free(names);
	return (dups > 0 ? TRUE : FALSE);
}

/*
 * install:
 * Install a name in the symbol table, even if it is already there.
 * Caller must check against redefinition if that is desired. 
 */

NODE *
install(name, value)
char *name;
NODE *value;
{
	register NODE *hp;
	register size_t len;
	register int bucket;

	len = strlen(name);
	bucket = hash(name, len, (unsigned long) HASHSIZE);
	getnode(hp);
	hp->type = Node_hashnode;
	hp->hnext = variables[bucket];
	variables[bucket] = hp;
	hp->hlength = len;
	hp->hvalue = value;
	hp->hname = name;
	hp->hvalue->vname = name;
	return hp->hvalue;
}

/* lookup --- find the most recent hash node for name installed by install */

NODE *
lookup(name)
const char *name;
{
	register NODE *bucket;
	register size_t len;

	len = strlen(name);
	for (bucket = variables[hash(name, len, (unsigned long) HASHSIZE)];
			bucket != NULL; bucket = bucket->hnext)
		if (bucket->hlength == len && STREQN(bucket->hname, name, len))
			return bucket->hvalue;

	return NULL;
}

/*
 * append_right:
 * Add new to the rightmost branch of LIST.  This uses n^2 time, so we make
 * a simple attempt at optimizing it.
 */

static NODE *
append_right(list, new)
NODE *list, *new;
{
	register NODE *oldlist;
	static NODE *savefront = NULL, *savetail = NULL;

	if (list == NULL || new == NULL)
		return list;

	oldlist = list;
	if (savefront == oldlist) {
		savetail = savetail->rnode = new;
		return oldlist;
	} else
		savefront = oldlist;
	while (list->rnode != NULL)
		list = list->rnode;
	savetail = list->rnode = new;
	return oldlist;
}

/*
 * func_install:
 * check if name is already installed;  if so, it had better have Null value,
 * in which case def is added as the value. Otherwise, install name with def
 * as value. 
 */

static void
func_install(params, def)
NODE *params;
NODE *def;
{
	NODE *r;

	pop_params(params->rnode);
	pop_var(params, FALSE);
	r = lookup(params->param);
	if (r != NULL) {
		fatal("function name `%s' previously defined", params->param);
	} else
		(void) install(params->param, node(params, Node_func, def));

	func_use(params->param, FUNC_DEFINE);
}

/* pop_var --- remove a variable from the symbol table */

static void
pop_var(np, freeit)
NODE *np;
int freeit;
{
	register NODE *bucket, **save;
	register size_t len;
	char *name;

	name = np->param;
	len = strlen(name);
	save = &(variables[hash(name, len, (unsigned long) HASHSIZE)]);
	for (bucket = *save; bucket != NULL; bucket = bucket->hnext) {
		if (len == bucket->hlength && STREQN(bucket->hname, name, len)) {
			*save = bucket->hnext;
			freenode(bucket);
			if (freeit)
				free(np->param);
			return;
		}
		save = &(bucket->hnext);
	}
}

/* pop_params --- remove list of function parameters from symbol table */

/*
 * pop parameters out of the symbol table. do this in reverse order to
 * avoid reading freed memory if there were duplicated parameters.
 */
static void
pop_params(params)
NODE *params;
{
	if (params == NULL)
		return;
	pop_params(params->rnode);
	pop_var(params, TRUE);
}

/* make_param --- make NAME into a function parameter */

static NODE *
make_param(name)
char *name;
{
	NODE *r;

	getnode(r);
	r->type = Node_param_list;
	r->rnode = NULL;
	r->param = name;
	r->param_cnt = param_counter++;
	return (install(name, r));
}

static struct fdesc {
	char *name;
	short used;
	short defined;
	struct fdesc *next;
} *ftable[HASHSIZE];

/* func_use --- track uses and definitions of functions */

static void
func_use(name, how)
char *name;
enum defref how;
{
	struct fdesc *fp;
	int len;
	int ind;

	len = strlen(name);
	ind = hash(name, len, HASHSIZE);

	for (fp = ftable[ind]; fp != NULL; fp = fp->next) {
		if (strcmp(fp->name, name) == 0) {
			if (how == FUNC_DEFINE)
				fp->defined++;
			else
				fp->used++;
			return;
		}
	}

	/* not in the table, fall through to allocate a new one */

	emalloc(fp, struct fdesc *, sizeof(struct fdesc), "func_use");
	memset(fp, '\0', sizeof(struct fdesc));
	emalloc(fp->name, char *, len + 1, "func_use");
	strcpy(fp->name, name);
	if (how == FUNC_DEFINE)
		fp->defined++;
	else
		fp->used++;
	fp->next = ftable[ind];
	ftable[ind] = fp;
}

/* check_funcs --- verify functions that are called but not defined */

static void
check_funcs()
{
	struct fdesc *fp, *next;
	int i;

	for (i = 0; i < HASHSIZE; i++) {
		for (fp = ftable[i]; fp != NULL; fp = fp->next) {
#ifdef REALLYMEAN
			/* making this the default breaks old code. sigh. */
			if (fp->defined == 0) {
				error(
		"function `%s' called but never defined", fp->name);
				errcount++;
			}
#else
			if (do_lint && fp->defined == 0)
				warning(
		"function `%s' called but never defined", fp->name);
#endif
			if (do_lint && fp->used == 0) {
				warning("function `%s' defined but never called",
					fp->name);
			}
		}
	}

	/* now let's free all the memory */
	for (i = 0; i < HASHSIZE; i++) {
		for (fp = ftable[i]; fp != NULL; fp = next) {
			next = fp->next;
			free(fp->name);
			free(fp);
		}
	}
}

/* param_sanity --- look for parameters that are regexp constants */

static void
param_sanity(arglist)
NODE *arglist;
{
	NODE *argp, *arg;
	int i;

	for (i = 1, argp = arglist; argp != NULL; argp = argp->rnode, i++) {
		arg = argp->lnode;
		if (arg->type == Node_regex)
			warning("regexp constant for parameter #%d yields boolean value", i);
	}
}

/* variable --- make sure NAME is in the symbol table */

NODE *
variable(name, can_free, type)
char *name;
int can_free;
NODETYPE type;
{
	register NODE *r;
	static int env_loaded = FALSE;

	if (! env_loaded && STREQ(name, "ENVIRON")) {
		load_environ();
		env_loaded = TRUE;
	}
	if ((r = lookup(name)) == NULL)
		r = install(name, node(Nnull_string, type, (NODE *) NULL));
	else if (can_free)
		free(name);
	return r;
}

/* mk_rexp --- make a regular expression constant */

static NODE *
mk_rexp(exp)
NODE *exp;
{
	NODE *n;

	if (exp->type == Node_regex)
		return exp;

	getnode(n);
	n->type = Node_regex;
	n->re_exp = exp;
	n->re_text = NULL;
	n->re_reg = NULL;
	n->re_flags = 0;
	n->re_cnt = 1;
	return n;
}

/* isnoeffect --- when used as a statement, has no side effects */

/*
 * To be completely general, we should recursively walk the parse
 * tree, to make sure that all the subexpressions also have no effect.
 * Instead, we just weaken the actual warning that's printed, up above
 * in the grammar.
 */

static int
isnoeffect(type)
NODETYPE type;
{
	switch (type) {
	case Node_times:
	case Node_quotient:
	case Node_mod:
	case Node_plus:
	case Node_minus:
	case Node_subscript:
	case Node_concat:
	case Node_exp:
	case Node_unary_minus:
	case Node_field_spec:
	case Node_and:
	case Node_or:
	case Node_equal:
	case Node_notequal:
	case Node_less:
	case Node_greater:
	case Node_leq:
	case Node_geq:
	case Node_match:
	case Node_nomatch:
	case Node_not:
	case Node_val:
	case Node_in_array:
	case Node_NF:
	case Node_NR:
	case Node_FNR:
	case Node_FS:
	case Node_RS:
	case Node_FIELDWIDTHS:
	case Node_IGNORECASE:
	case Node_OFS:
	case Node_ORS:
	case Node_OFMT:
	case Node_CONVFMT:
		return TRUE;
	default:
		break;	/* keeps gcc -Wall happy */
	}

	return FALSE;
}

/* isassignable --- can this node be assigned to? */

static int
isassignable(n)
register NODE *n;
{
	switch (n->type) {
	case Node_var:
	case Node_FIELDWIDTHS:
	case Node_RS:
	case Node_FS:
	case Node_FNR:
	case Node_NR:
	case Node_NF:
	case Node_IGNORECASE:
	case Node_OFMT:
	case Node_CONVFMT:
	case Node_ORS:
	case Node_OFS:
	case Node_field_spec:
	case Node_subscript:
		return TRUE;
	case Node_param_list:
		return ((n->flags & FUNC) == 0);  /* ok if not func name */
	default:
		break;	/* keeps gcc -Wall happy */
	}
	return FALSE;
}
