/* A Bison parser, made by GNU Bison 1.875.  */

/* Skeleton parser for Yacc-like parsing with Bison,
   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* As a special exception, when this file is copied by Bison into a
   Bison output file, you may use that output file without restriction.
   This special exception was added by the Free Software Foundation
   in version 1.24 of Bison.  */

/* Written by Richard Stallman by simplifying the original so called
   ``semantic'' parser.  */

/* All symbols defined below should begin with yy or YY, to avoid
   infringing on user name space.  This should be done even for local
   variables, as they might otherwise be expanded by user macros.
   There are some unavoidable exceptions within include files to
   define necessary library symbols; they are noted "INFRINGES ON
   USER NAME SPACE" below.  */

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

/* Skeleton name.  */
#define YYSKELETON_NAME "yacc.c"

/* Pure parsers.  */
#define YYPURE 0

/* Using locations.  */
#define YYLSP_NEEDED 1

/* If NAME_PREFIX is specified substitute the variables and functions
   names.  */
#define yyparse plpgsql_yyparse
#define yylex   plpgsql_yylex
#define yyerror plpgsql_yyerror
#define yylval  plpgsql_yylval
#define yychar  plpgsql_yychar
#define yydebug plpgsql_yydebug
#define yynerrs plpgsql_yynerrs
#define yylloc plpgsql_yylloc

/* Tokens.  */
#ifndef YYTOKENTYPE
# define YYTOKENTYPE
   /* Put the tokens into the symbol table, so that GDB and other debuggers
      know about them.  */
   enum yytokentype {
     IDENT = 258,
     FCONST = 259,
     SCONST = 260,
     BCONST = 261,
     XCONST = 262,
     Op = 263,
     ICONST = 264,
     PARAM = 265,
     TYPECAST = 266,
     DOT_DOT = 267,
     COLON_EQUALS = 268,
     T_WORD = 269,
     T_CWORD = 270,
     T_DATUM = 271,
     LESS_LESS = 272,
     GREATER_GREATER = 273,
     K_ABSOLUTE = 274,
     K_ALIAS = 275,
     K_ALL = 276,
     K_BACKWARD = 277,
     K_BEGIN = 278,
     K_BY = 279,
     K_CASE = 280,
     K_CLOSE = 281,
     K_CONSTANT = 282,
     K_CONTINUE = 283,
     K_CURSOR = 284,
     K_DEBUG = 285,
     K_DECLARE = 286,
     K_DEFAULT = 287,
     K_DETAIL = 288,
     K_DIAGNOSTICS = 289,
     K_DUMP = 290,
     K_ELSE = 291,
     K_ELSIF = 292,
     K_END = 293,
     K_ERRCODE = 294,
     K_ERROR = 295,
     K_EXCEPTION = 296,
     K_EXECUTE = 297,
     K_EXIT = 298,
     K_FETCH = 299,
     K_FIRST = 300,
     K_FOR = 301,
     K_FORWARD = 302,
     K_FROM = 303,
     K_GET = 304,
     K_HINT = 305,
     K_IF = 306,
     K_IN = 307,
     K_INFO = 308,
     K_INSERT = 309,
     K_INTO = 310,
     K_IS = 311,
     K_LAST = 312,
     K_LOG = 313,
     K_LOOP = 314,
     K_MESSAGE = 315,
     K_MOVE = 316,
     K_NEXT = 317,
     K_NO = 318,
     K_NOT = 319,
     K_NOTICE = 320,
     K_NULL = 321,
     K_OPEN = 322,
     K_OPTION = 323,
     K_OR = 324,
     K_PERFORM = 325,
     K_PRIOR = 326,
     K_QUERY = 327,
     K_RAISE = 328,
     K_RELATIVE = 329,
     K_RESULT_OID = 330,
     K_RETURN = 331,
     K_REVERSE = 332,
     K_ROWTYPE = 333,
     K_ROW_COUNT = 334,
     K_SCROLL = 335,
     K_SQLSTATE = 336,
     K_STRICT = 337,
     K_THEN = 338,
     K_TO = 339,
     K_TYPE = 340,
     K_USE_COLUMN = 341,
     K_USE_VARIABLE = 342,
     K_USING = 343,
     K_VARIABLE_CONFLICT = 344,
     K_WARNING = 345,
     K_WHEN = 346,
     K_WHILE = 347
   };
#endif
#define IDENT 258
#define FCONST 259
#define SCONST 260
#define BCONST 261
#define XCONST 262
#define Op 263
#define ICONST 264
#define PARAM 265
#define TYPECAST 266
#define DOT_DOT 267
#define COLON_EQUALS 268
#define T_WORD 269
#define T_CWORD 270
#define T_DATUM 271
#define LESS_LESS 272
#define GREATER_GREATER 273
#define K_ABSOLUTE 274
#define K_ALIAS 275
#define K_ALL 276
#define K_BACKWARD 277
#define K_BEGIN 278
#define K_BY 279
#define K_CASE 280
#define K_CLOSE 281
#define K_CONSTANT 282
#define K_CONTINUE 283
#define K_CURSOR 284
#define K_DEBUG 285
#define K_DECLARE 286
#define K_DEFAULT 287
#define K_DETAIL 288
#define K_DIAGNOSTICS 289
#define K_DUMP 290
#define K_ELSE 291
#define K_ELSIF 292
#define K_END 293
#define K_ERRCODE 294
#define K_ERROR 295
#define K_EXCEPTION 296
#define K_EXECUTE 297
#define K_EXIT 298
#define K_FETCH 299
#define K_FIRST 300
#define K_FOR 301
#define K_FORWARD 302
#define K_FROM 303
#define K_GET 304
#define K_HINT 305
#define K_IF 306
#define K_IN 307
#define K_INFO 308
#define K_INSERT 309
#define K_INTO 310
#define K_IS 311
#define K_LAST 312
#define K_LOG 313
#define K_LOOP 314
#define K_MESSAGE 315
#define K_MOVE 316
#define K_NEXT 317
#define K_NO 318
#define K_NOT 319
#define K_NOTICE 320
#define K_NULL 321
#define K_OPEN 322
#define K_OPTION 323
#define K_OR 324
#define K_PERFORM 325
#define K_PRIOR 326
#define K_QUERY 327
#define K_RAISE 328
#define K_RELATIVE 329
#define K_RESULT_OID 330
#define K_RETURN 331
#define K_REVERSE 332
#define K_ROWTYPE 333
#define K_ROW_COUNT 334
#define K_SCROLL 335
#define K_SQLSTATE 336
#define K_STRICT 337
#define K_THEN 338
#define K_TO 339
#define K_TYPE 340
#define K_USE_COLUMN 341
#define K_USE_VARIABLE 342
#define K_USING 343
#define K_VARIABLE_CONFLICT 344
#define K_WARNING 345
#define K_WHEN 346
#define K_WHILE 347




/* Copy the first part of user declarations.  */
#line 1 "gram.y"

/*-------------------------------------------------------------------------
 *
 * gram.y				- Parser for the PL/pgSQL procedural language
 *
 * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 *
 * IDENTIFICATION
 *	  $PostgreSQL: pgsql/src/pl/plpgsql/src/gram.y,v 1.143.2.1 2010/08/19 18:58:04 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */

#include "plpgsql.h"

#include "catalog/namespace.h"
#include "catalog/pg_type.h"
#include "parser/parser.h"
#include "parser/parse_type.h"
#include "parser/scanner.h"
#include "parser/scansup.h"


/* Location tracking support --- simpler than bison's default */
#define YYLLOC_DEFAULT(Current, Rhs, N) \
	do { \
		if (N) \
			(Current) = (Rhs)[1]; \
		else \
			(Current) = (Rhs)[0]; \
	} while (0)

/*
 * Bison doesn't allocate anything that needs to live across parser calls,
 * so we can easily have it use palloc instead of malloc.  This prevents
 * memory leaks if we error out during parsing.  Note this only works with
 * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
 * if possible, so there's not really much problem anyhow, at least if
 * you're building with gcc.
 */
#define YYMALLOC palloc
#define YYFREE   pfree


typedef struct
{
	int			location;
	int			leaderlen;
} sql_error_callback_arg;

#define parser_errposition(pos)  plpgsql_scanner_errposition(pos)

union YYSTYPE;					/* need forward reference for tok_is_keyword */

static	bool			tok_is_keyword(int token, union YYSTYPE *lval,
									   int kw_token, const char *kw_str);
static	void			word_is_not_variable(PLword *word, int location);
static	void			cword_is_not_variable(PLcword *cword, int location);
static	void			current_token_is_not_variable(int tok);
static	PLpgSQL_expr	*read_sql_construct(int until,
											int until2,
											int until3,
											const char *expected,
											const char *sqlstart,
											bool isexpression,
											bool valid_sql,
											int *startloc,
											int *endtoken);
static	PLpgSQL_expr	*read_sql_expression(int until,
											 const char *expected);
static	PLpgSQL_expr	*read_sql_expression2(int until, int until2,
											  const char *expected,
											  int *endtoken);
static	PLpgSQL_expr	*read_sql_stmt(const char *sqlstart);
static	PLpgSQL_type	*read_datatype(int tok);
static	PLpgSQL_stmt	*make_execsql_stmt(int firsttoken, int location);
static	PLpgSQL_stmt_fetch *read_fetch_direction(void);
static	void			 complete_direction(PLpgSQL_stmt_fetch *fetch,
											bool *check_FROM);
static	PLpgSQL_stmt	*make_return_stmt(int location);
static	PLpgSQL_stmt	*make_return_next_stmt(int location);
static	PLpgSQL_stmt	*make_return_query_stmt(int location);
static  PLpgSQL_stmt 	*make_case(int location, PLpgSQL_expr *t_expr,
								   List *case_when_list, List *else_stmts);
static	char			*NameOfDatum(PLwdatum *wdatum);
static	void			 check_assignable(PLpgSQL_datum *datum, int location);
static	void			 read_into_target(PLpgSQL_rec **rec, PLpgSQL_row **row,
										  bool *strict);
static	PLpgSQL_row		*read_into_scalar_list(char *initial_name,
											   PLpgSQL_datum *initial_datum,
											   int initial_location);
static	PLpgSQL_row		*make_scalar_list1(char *initial_name,
										   PLpgSQL_datum *initial_datum,
										   int lineno, int location);
static	void			 check_sql_expr(const char *stmt, int location,
										int leaderlen);
static	void			 plpgsql_sql_error_callback(void *arg);
static	PLpgSQL_type	*parse_datatype(const char *string, int location);
static	void			 check_labels(const char *start_label,
									  const char *end_label,
									  int end_location);
static	PLpgSQL_expr 	*read_cursor_args(PLpgSQL_var *cursor,
										  int until, const char *expected);
static	List			*read_raise_options(void);



/* Enabling traces.  */
#ifndef YYDEBUG
# define YYDEBUG 0
#endif

/* Enabling verbose error messages.  */
#ifdef YYERROR_VERBOSE
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
# define YYERROR_VERBOSE 0
#endif

#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
#line 114 "gram.y"
typedef union YYSTYPE {
		core_YYSTYPE			core_yystype;
		/* these fields must match core_YYSTYPE: */
		int						ival;
		char					*str;
		const char				*keyword;

		PLword					word;
		PLcword					cword;
		PLwdatum				wdatum;
		bool					boolean;
		struct
		{
			char *name;
			int  lineno;
		}						varname;
		struct
		{
			char *name;
			int  lineno;
			PLpgSQL_datum   *scalar;
			PLpgSQL_rec     *rec;
			PLpgSQL_row     *row;
		}						forvariable;
		struct
		{
			char *label;
			int  n_initvars;
			int  *initvarnos;
		}						declhdr;
		struct
		{
			List *stmts;
			char *end_label;
			int   end_label_location;
		}						loop_body;
		List					*list;
		PLpgSQL_type			*dtype;
		PLpgSQL_datum			*datum;
		PLpgSQL_var				*var;
		PLpgSQL_expr			*expr;
		PLpgSQL_stmt			*stmt;
		PLpgSQL_condition		*condition;
		PLpgSQL_exception		*exception;
		PLpgSQL_exception_block	*exception_block;
		PLpgSQL_nsitem			*nsitem;
		PLpgSQL_diag_item		*diagitem;
		PLpgSQL_stmt_fetch		*fetch;
		PLpgSQL_case_when		*casewhen;
} YYSTYPE;
/* Line 186 of yacc.c.  */
#line 428 "pl_gram.c"
# define yystype YYSTYPE /* obsolescent; will be withdrawn */
# define YYSTYPE_IS_DECLARED 1
# define YYSTYPE_IS_TRIVIAL 1
#endif

#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
typedef struct YYLTYPE
{
  int first_line;
  int first_column;
  int last_line;
  int last_column;
} YYLTYPE;
# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
# define YYLTYPE_IS_DECLARED 1
# define YYLTYPE_IS_TRIVIAL 1
#endif


/* Copy the second part of user declarations.  */


/* Line 214 of yacc.c.  */
#line 452 "pl_gram.c"

#if ! defined (yyoverflow) || YYERROR_VERBOSE

/* The parser invokes alloca or malloc; define the necessary symbols.  */

# if YYSTACK_USE_ALLOCA
#  define YYSTACK_ALLOC alloca
# else
#  ifndef YYSTACK_USE_ALLOCA
#   if defined (alloca) || defined (_ALLOCA_H)
#    define YYSTACK_ALLOC alloca
#   else
#    ifdef __GNUC__
#     define YYSTACK_ALLOC __builtin_alloca
#    endif
#   endif
#  endif
# endif

# ifdef YYSTACK_ALLOC
   /* Pacify GCC's `empty if-body' warning. */
#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
# else
#  if defined (__STDC__) || defined (__cplusplus)
#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
#   define YYSIZE_T size_t
#  endif
#  define YYSTACK_ALLOC malloc
#  define YYSTACK_FREE free
# endif
#endif /* ! defined (yyoverflow) || YYERROR_VERBOSE */


#if (! defined (yyoverflow) \
     && (! defined (__cplusplus) \
	 || (YYLTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))

/* A type that is properly aligned for any stack member.  */
union yyalloc
{
  short yyss;
  YYSTYPE yyvs;
    YYLTYPE yyls;
};

/* The size of the maximum gap between one aligned stack and the next.  */
# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)

/* The size of an array large to enough to hold all stacks, each with
   N elements.  */
# define YYSTACK_BYTES(N) \
     ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE))	\
      + 2 * YYSTACK_GAP_MAXIMUM)

/* Copy COUNT objects from FROM to TO.  The source and destination do
   not overlap.  */
# ifndef YYCOPY
#  if 1 < __GNUC__
#   define YYCOPY(To, From, Count) \
      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
#  else
#   define YYCOPY(To, From, Count)		\
      do					\
	{					\
	  register YYSIZE_T yyi;		\
	  for (yyi = 0; yyi < (Count); yyi++)	\
	    (To)[yyi] = (From)[yyi];		\
	}					\
      while (0)
#  endif
# endif

/* Relocate STACK from its old location to the new one.  The
   local variables YYSIZE and YYSTACKSIZE give the old and new number of
   elements in the stack, and YYPTR gives the new location of the
   stack.  Advance YYPTR to a properly aligned location for the next
   stack.  */
# define YYSTACK_RELOCATE(Stack)					\
    do									\
      {									\
	YYSIZE_T yynewbytes;						\
	YYCOPY (&yyptr->Stack, Stack, yysize);				\
	Stack = &yyptr->Stack;						\
	yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
	yyptr += yynewbytes / sizeof (*yyptr);				\
      }									\
    while (0)

#endif

#if defined (__STDC__) || defined (__cplusplus)
   typedef signed char yysigned_char;
#else
   typedef short yysigned_char;
#endif

/* YYFINAL -- State number of the termination state. */
#define YYFINAL  3
/* YYLAST -- Last index in YYTABLE.  */
#define YYLAST   479

/* YYNTOKENS -- Number of terminals. */
#define YYNTOKENS  100
/* YYNNTS -- Number of nonterminals. */
#define YYNNTS  78
/* YYNRULES -- Number of rules. */
#define YYNRULES  179
/* YYNRULES -- Number of states. */
#define YYNSTATES  250

/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
#define YYUNDEFTOK  2
#define YYMAXUTOK   347

#define YYTRANSLATE(YYX) 						\
  ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)

/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
static const unsigned char yytranslate[] =
{
       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,    93,     2,     2,     2,     2,
      95,    96,     2,     2,    97,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,    94,
       2,    98,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,    99,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     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,    40,    41,    42,    43,    44,
      45,    46,    47,    48,    49,    50,    51,    52,    53,    54,
      55,    56,    57,    58,    59,    60,    61,    62,    63,    64,
      65,    66,    67,    68,    69,    70,    71,    72,    73,    74,
      75,    76,    77,    78,    79,    80,    81,    82,    83,    84,
      85,    86,    87,    88,    89,    90,    91,    92
};

#if YYDEBUG
/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
   YYRHS.  */
static const unsigned short yyprhs[] =
{
       0,     0,     3,     7,     8,    11,    15,    19,    23,    27,
      28,    30,    37,    39,    42,    46,    48,    51,    53,    55,
      57,    61,    67,    73,    74,    82,    83,    86,    88,    89,
      90,    94,    96,   100,   103,   105,   107,   109,   111,   113,
     115,   116,   118,   119,   120,   123,   125,   127,   129,   131,
     133,   135,   136,   138,   141,   143,   146,   148,   150,   152,
     154,   156,   158,   160,   162,   164,   166,   168,   170,   172,
     174,   176,   178,   180,   182,   185,   189,   194,   198,   200,
     204,   205,   207,   209,   211,   213,   217,   225,   226,   231,
     234,   242,   243,   246,   248,   252,   253,   256,   260,   265,
     270,   273,   275,   277,   279,   283,   285,   287,   289,   291,
     297,   299,   301,   303,   305,   308,   313,   318,   319,   323,
     326,   328,   330,   332,   333,   334,   338,   341,   343,   348,
     352,   354,   356,   357,   358,   359,   360,   361,   365,   366,
     368,   370,   373,   375,   377,   379,   381,   383,   385,   387,
     389,   391,   393,   395,   397,   399,   401,   403,   405,   407,
     409,   411,   413,   415,   417,   419,   421,   423,   425,   427,
     429,   431,   433,   435,   437,   439,   441,   443,   445,   447
};

/* YYRHS -- A `-1'-separated list of the rules' RHS. */
static const short yyrhs[] =
{
     101,     0,    -1,   102,   105,   104,    -1,    -1,   102,   103,
      -1,    93,    68,    35,    -1,    93,    89,    40,    -1,    93,
      89,    87,    -1,    93,    89,    86,    -1,    -1,    94,    -1,
     106,    23,   126,   163,    38,   174,    -1,   173,    -1,   173,
     107,    -1,   173,   107,   108,    -1,    31,    -1,   108,   109,
      -1,   109,    -1,   110,    -1,    31,    -1,    17,   176,    18,
      -1,   119,   120,   121,   122,   123,    -1,   119,    20,    46,
     118,    94,    -1,    -1,   119,   112,    29,   111,   114,   117,
     113,    -1,    -1,    63,    80,    -1,    80,    -1,    -1,    -1,
      95,   115,    96,    -1,   116,    -1,   115,    97,   116,    -1,
     119,   121,    -1,    56,    -1,    46,    -1,    14,    -1,    15,
      -1,    14,    -1,   177,    -1,    -1,    27,    -1,    -1,    -1,
      64,    66,    -1,    94,    -1,   124,    -1,   125,    -1,    32,
      -1,    98,    -1,    13,    -1,    -1,   127,    -1,   127,   128,
      -1,   128,    -1,   105,    94,    -1,   130,    -1,   137,    -1,
     139,    -1,   144,    -1,   145,    -1,   146,    -1,   149,    -1,
     151,    -1,   152,    -1,   154,    -1,   155,    -1,   129,    -1,
     131,    -1,   156,    -1,   157,    -1,   158,    -1,   160,    -1,
     161,    -1,    70,   169,    -1,   136,   125,   169,    -1,    49,
      34,   132,    94,    -1,   132,    97,   133,    -1,   133,    -1,
     135,   125,   134,    -1,    -1,    16,    -1,    14,    -1,    15,
      -1,    16,    -1,   136,    99,   170,    -1,    51,   171,   126,
     138,    38,    51,    94,    -1,    -1,    37,   171,   126,   138,
      -1,    36,   126,    -1,    25,   140,   141,   143,    38,    25,
      94,    -1,    -1,   141,   142,    -1,   142,    -1,    91,   171,
     126,    -1,    -1,    36,   126,    -1,   173,    59,   153,    -1,
     173,    92,   172,   153,    -1,   173,    46,   147,   153,    -1,
     148,    52,    -1,    16,    -1,    14,    -1,    15,    -1,   150,
     174,   175,    -1,    43,    -1,    28,    -1,    76,    -1,    73,
      -1,   126,    38,    59,   174,    94,    -1,    54,    -1,    14,
      -1,    15,    -1,    42,    -1,    67,   162,    -1,    44,   159,
     162,    55,    -1,    61,   159,   162,    94,    -1,    -1,    26,
     162,    94,    -1,    66,    94,    -1,    16,    -1,    14,    -1,
      15,    -1,    -1,    -1,    41,   164,   165,    -1,   165,   166,
      -1,   166,    -1,    91,   167,    83,   126,    -1,   167,    69,
     168,    -1,   168,    -1,   176,    -1,    -1,    -1,    -1,    -1,
      -1,    17,   176,    18,    -1,    -1,   176,    -1,    94,    -1,
      91,   169,    -1,    14,    -1,    16,    -1,    19,    -1,    20,
      -1,    22,    -1,    27,    -1,    29,    -1,    30,    -1,    33,
      -1,    35,    -1,    39,    -1,    40,    -1,    45,    -1,    47,
      -1,    50,    -1,    53,    -1,    56,    -1,    57,    -1,    58,
      -1,    60,    -1,    62,    -1,    63,    -1,    65,    -1,    68,
      -1,    71,    -1,    72,    -1,    74,    -1,    75,    -1,    77,
      -1,    79,    -1,    78,    -1,    80,    -1,    81,    -1,    85,
      -1,    86,    -1,    87,    -1,    89,    -1,    90,    -1
};

/* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
static const unsigned short yyrline[] =
{
       0,   316,   316,   322,   323,   326,   330,   334,   338,   344,
     345,   348,   370,   378,   385,   394,   406,   407,   410,   411,
     415,   428,   466,   472,   471,   523,   526,   530,   537,   543,
     546,   575,   579,   585,   593,   594,   596,   611,   639,   652,
     668,   669,   674,   685,   686,   690,   692,   698,   699,   702,
     703,   707,   708,   712,   719,   728,   730,   732,   734,   736,
     738,   740,   742,   744,   746,   748,   750,   752,   754,   756,
     758,   760,   762,   764,   768,   781,   795,   808,   812,   818,
     831,   845,   857,   862,   870,   875,   890,   906,   909,   939,
     945,   952,   966,   970,   976,   988,   991,  1006,  1023,  1041,
    1075,  1335,  1367,  1382,  1389,  1404,  1408,  1414,  1440,  1579,
    1597,  1601,  1611,  1623,  1687,  1764,  1796,  1809,  1814,  1827,
    1834,  1850,  1855,  1863,  1865,  1864,  1900,  1904,  1910,  1923,
    1932,  1938,  1975,  1979,  1983,  1987,  1991,  1995,  2003,  2006,
    2014,  2016,  2023,  2027,  2036,  2037,  2038,  2039,  2040,  2041,
    2042,  2043,  2044,  2045,  2046,  2047,  2048,  2049,  2050,  2051,
    2052,  2053,  2054,  2055,  2056,  2057,  2058,  2059,  2060,  2061,
    2062,  2063,  2064,  2065,  2066,  2067,  2068,  2069,  2070,  2071
};
#endif

#if YYDEBUG || YYERROR_VERBOSE
/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
   First, the terminals, then, starting at YYNTOKENS, nonterminals. */
static const char *const yytname[] =
{
  "$end", "error", "$undefined", "IDENT", "FCONST", "SCONST", "BCONST", 
  "XCONST", "Op", "ICONST", "PARAM", "TYPECAST", "DOT_DOT", 
  "COLON_EQUALS", "T_WORD", "T_CWORD", "T_DATUM", "LESS_LESS", 
  "GREATER_GREATER", "K_ABSOLUTE", "K_ALIAS", "K_ALL", "K_BACKWARD", 
  "K_BEGIN", "K_BY", "K_CASE", "K_CLOSE", "K_CONSTANT", "K_CONTINUE", 
  "K_CURSOR", "K_DEBUG", "K_DECLARE", "K_DEFAULT", "K_DETAIL", 
  "K_DIAGNOSTICS", "K_DUMP", "K_ELSE", "K_ELSIF", "K_END", "K_ERRCODE", 
  "K_ERROR", "K_EXCEPTION", "K_EXECUTE", "K_EXIT", "K_FETCH", "K_FIRST", 
  "K_FOR", "K_FORWARD", "K_FROM", "K_GET", "K_HINT", "K_IF", "K_IN", 
  "K_INFO", "K_INSERT", "K_INTO", "K_IS", "K_LAST", "K_LOG", "K_LOOP", 
  "K_MESSAGE", "K_MOVE", "K_NEXT", "K_NO", "K_NOT", "K_NOTICE", "K_NULL", 
  "K_OPEN", "K_OPTION", "K_OR", "K_PERFORM", "K_PRIOR", "K_QUERY", 
  "K_RAISE", "K_RELATIVE", "K_RESULT_OID", "K_RETURN", "K_REVERSE", 
  "K_ROWTYPE", "K_ROW_COUNT", "K_SCROLL", "K_SQLSTATE", "K_STRICT", 
  "K_THEN", "K_TO", "K_TYPE", "K_USE_COLUMN", "K_USE_VARIABLE", "K_USING", 
  "K_VARIABLE_CONFLICT", "K_WARNING", "K_WHEN", "K_WHILE", "'#'", "';'", 
  "'('", "')'", "','", "'='", "'['", "$accept", "pl_function", 
  "comp_options", "comp_option", "opt_semi", "pl_block", "decl_sect", 
  "decl_start", "decl_stmts", "decl_stmt", "decl_statement", "@1", 
  "opt_scrollable", "decl_cursor_query", "decl_cursor_args", 
  "decl_cursor_arglist", "decl_cursor_arg", "decl_is_for", 
  "decl_aliasitem", "decl_varname", "decl_const", "decl_datatype", 
  "decl_notnull", "decl_defval", "decl_defkey", "assign_operator", 
  "proc_sect", "proc_stmts", "proc_stmt", "stmt_perform", "stmt_assign", 
  "stmt_getdiag", "getdiag_list", "getdiag_list_item", "getdiag_item", 
  "getdiag_target", "assign_var", "stmt_if", "stmt_else", "stmt_case", 
  "opt_expr_until_when", "case_when_list", "case_when", "opt_case_else", 
  "stmt_loop", "stmt_while", "stmt_for", "for_control", "for_variable", 
  "stmt_exit", "exit_type", "stmt_return", "stmt_raise", "loop_body", 
  "stmt_execsql", "stmt_dynexecute", "stmt_open", "stmt_fetch", 
  "stmt_move", "opt_fetch_direction", "stmt_close", "stmt_null", 
  "cursor_variable", "exception_sect", "@2", "proc_exceptions", 
  "proc_exception", "proc_conditions", "proc_condition", 
  "expr_until_semi", "expr_until_rightbracket", "expr_until_then", 
  "expr_until_loop", "opt_block_label", "opt_label", "opt_exitcond", 
  "any_identifier", "unreserved_keyword", 0
};
#endif

# ifdef YYPRINT
/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
   token YYLEX-NUM.  */
static const unsigned short yytoknum[] =
{
       0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
     265,   266,   267,   268,   269,   270,   271,   272,   273,   274,
     275,   276,   277,   278,   279,   280,   281,   282,   283,   284,
     285,   286,   287,   288,   289,   290,   291,   292,   293,   294,
     295,   296,   297,   298,   299,   300,   301,   302,   303,   304,
     305,   306,   307,   308,   309,   310,   311,   312,   313,   314,
     315,   316,   317,   318,   319,   320,   321,   322,   323,   324,
     325,   326,   327,   328,   329,   330,   331,   332,   333,   334,
     335,   336,   337,   338,   339,   340,   341,   342,   343,   344,
     345,   346,   347,    35,    59,    40,    41,    44,    61,    91
};
# endif

/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
static const unsigned char yyr1[] =
{
       0,   100,   101,   102,   102,   103,   103,   103,   103,   104,
     104,   105,   106,   106,   106,   107,   108,   108,   109,   109,
     109,   110,   110,   111,   110,   112,   112,   112,   113,   114,
     114,   115,   115,   116,   117,   117,   118,   118,   119,   119,
     120,   120,   121,   122,   122,   123,   123,   124,   124,   125,
     125,   126,   126,   127,   127,   128,   128,   128,   128,   128,
     128,   128,   128,   128,   128,   128,   128,   128,   128,   128,
     128,   128,   128,   128,   129,   130,   131,   132,   132,   133,
     134,   135,   135,   135,   136,   136,   137,   138,   138,   138,
     139,   140,   141,   141,   142,   143,   143,   144,   145,   146,
     147,   148,   148,   148,   149,   150,   150,   151,   152,   153,
     154,   154,   154,   155,   156,   157,   158,   159,   160,   161,
     162,   162,   162,   163,   164,   163,   165,   165,   166,   167,
     167,   168,   169,   170,   171,   172,   173,   173,   174,   174,
     175,   175,   176,   176,   177,   177,   177,   177,   177,   177,
     177,   177,   177,   177,   177,   177,   177,   177,   177,   177,
     177,   177,   177,   177,   177,   177,   177,   177,   177,   177,
     177,   177,   177,   177,   177,   177,   177,   177,   177,   177
};

/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
static const unsigned char yyr2[] =
{
       0,     2,     3,     0,     2,     3,     3,     3,     3,     0,
       1,     6,     1,     2,     3,     1,     2,     1,     1,     1,
       3,     5,     5,     0,     7,     0,     2,     1,     0,     0,
       3,     1,     3,     2,     1,     1,     1,     1,     1,     1,
       0,     1,     0,     0,     2,     1,     1,     1,     1,     1,
       1,     0,     1,     2,     1,     2,     1,     1,     1,     1,
       1,     1,     1,     1,     1,     1,     1,     1,     1,     1,
       1,     1,     1,     1,     2,     3,     4,     3,     1,     3,
       0,     1,     1,     1,     1,     3,     7,     0,     4,     2,
       7,     0,     2,     1,     3,     0,     2,     3,     4,     4,
       2,     1,     1,     1,     3,     1,     1,     1,     1,     5,
       1,     1,     1,     1,     2,     4,     4,     0,     3,     2,
       1,     1,     1,     0,     0,     3,     2,     1,     4,     3,
       1,     1,     0,     0,     0,     0,     0,     3,     0,     1,
       1,     2,     1,     1,     1,     1,     1,     1,     1,     1,
       1,     1,     1,     1,     1,     1,     1,     1,     1,     1,
       1,     1,     1,     1,     1,     1,     1,     1,     1,     1,
       1,     1,     1,     1,     1,     1,     1,     1,     1,     1
};

/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
   STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
   means the default is an error.  */
static const unsigned char yydefact[] =
{
       3,     0,   136,     1,     0,     0,     4,     9,     0,    12,
     142,   143,     0,     0,     0,    10,     2,   136,    15,    13,
     137,     5,     6,     8,     7,   111,   112,    84,    91,     0,
     106,   113,   105,   117,     0,   134,   110,   117,     0,     0,
     132,   108,   107,     0,   123,    52,    54,    67,    56,    68,
       0,    57,    58,    59,    60,    61,    62,   138,    63,    64,
      65,    66,    69,    70,    71,    72,    73,    12,    38,     0,
     144,   145,   146,   147,   148,   149,    19,   150,   151,   152,
     153,   154,   155,   156,   157,   158,   159,   160,   161,   162,
     163,   164,   165,   166,   167,   168,   169,   170,   172,   171,
     173,   174,   175,   176,   177,   178,   179,    14,    17,    18,
      40,    39,     0,   121,   122,   120,     0,     0,     0,   136,
       0,   119,   114,    74,    55,   124,     0,    53,    50,    49,
     133,   132,     0,   139,     0,   136,   135,     0,    16,     0,
      41,     0,    27,     0,    42,   134,    95,    93,   118,     0,
      82,    83,    81,     0,    78,     0,    87,     0,     0,   138,
      85,    75,   132,   140,   104,   102,   103,   101,   136,     0,
       0,    97,   136,    20,     0,    26,    23,    43,   136,   136,
      92,     0,   115,    76,     0,    80,   136,   134,     0,   116,
       0,   125,   127,    11,   141,    99,   100,     0,    98,    36,
      37,     0,    29,     0,     0,    94,    96,     0,    77,    79,
      89,   136,     0,     0,   130,   131,   126,   138,    22,     0,
       0,    44,    48,    45,    21,    46,    47,     0,    87,     0,
       0,   136,     0,     0,    31,    42,    35,    34,    28,    90,
      88,    86,   129,   128,   109,    30,     0,    33,    24,    32
};

/* YYDEFGOTO[NTERM-NUM]. */
static const short yydefgoto[] =
{
      -1,     1,     2,     6,    16,    43,     8,    19,   107,   108,
     109,   202,   143,   248,   220,   233,   234,   238,   201,   110,
     144,   177,   204,   224,   225,   131,   170,    45,    46,    47,
      48,    49,   153,   154,   209,   155,    50,    51,   188,    52,
     112,   146,   147,   181,    53,    54,    55,   168,   169,    56,
      57,    58,    59,   171,    60,    61,    62,    63,    64,   117,
      65,    66,   116,   126,   158,   191,   192,   213,   214,   123,
     160,   119,   172,    67,   132,   164,   133,   111
};

/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
   STATE-NUM.  */
#define YYPACT_NINF -190
static const short yypact[] =
{
    -190,    44,   -10,  -190,    36,   -62,  -190,   -35,    43,    47,
    -190,  -190,    64,    56,    -7,  -190,  -190,   383,  -190,   189,
    -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,    61,
    -190,  -190,  -190,  -190,    59,  -190,  -190,  -190,     7,    61,
    -190,  -190,  -190,     8,    63,    -6,  -190,  -190,  -190,  -190,
     -11,  -190,  -190,  -190,  -190,  -190,  -190,    36,  -190,  -190,
    -190,  -190,  -190,  -190,  -190,  -190,  -190,   -18,  -190,    36,
    -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,
    -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,
    -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,
    -190,  -190,  -190,  -190,  -190,  -190,  -190,   189,  -190,  -190,
      29,  -190,    16,  -190,  -190,  -190,    19,    61,    84,   340,
      61,  -190,  -190,  -190,  -190,  -190,    76,  -190,  -190,  -190,
    -190,  -190,   -65,  -190,    96,   403,  -190,    97,  -190,    71,
    -190,    39,  -190,    91,  -190,  -190,   -20,  -190,  -190,    66,
    -190,  -190,  -190,   -55,  -190,    -8,    -2,    31,    35,    36,
    -190,  -190,  -190,  -190,  -190,  -190,  -190,  -190,   403,    75,
      90,  -190,   403,  -190,    48,  -190,  -190,    68,    80,   403,
    -190,    92,  -190,  -190,    84,  -190,   403,  -190,    95,  -190,
      36,    35,  -190,  -190,  -190,  -190,  -190,    77,  -190,  -190,
    -190,    41,    49,    79,    -9,  -190,  -190,   117,  -190,  -190,
    -190,   340,   101,   -51,  -190,  -190,  -190,    36,  -190,   263,
     -25,  -190,  -190,  -190,  -190,  -190,  -190,    60,    -2,    65,
      36,   123,    70,   -28,  -190,  -190,  -190,  -190,  -190,  -190,
    -190,  -190,  -190,  -190,  -190,  -190,   263,  -190,  -190,  -190
};

/* YYPGOTO[NTERM-NUM].  */
static const short yypgoto[] =
{
    -190,  -190,  -190,  -190,  -190,   141,  -190,  -190,  -190,    50,
    -190,  -190,  -190,  -190,  -190,  -190,   -91,  -190,  -190,  -189,
    -190,   -77,  -190,  -190,  -190,  -131,   -16,  -190,   115,  -190,
    -190,  -190,  -190,   -15,  -190,  -190,  -190,  -190,   -60,  -190,
    -190,  -190,    27,  -190,  -190,  -190,  -190,  -190,  -190,  -190,
    -190,  -190,  -190,  -121,  -190,  -190,  -190,  -190,  -190,   138,
    -190,  -190,   -36,  -190,  -190,  -190,   -13,  -190,   -54,  -116,
    -190,  -133,  -190,   177,  -145,  -190,    -4,  -190
};

/* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
   positive, shift that token.  If negative, reduce the rule which
   number is the opposite.  If zero, do what YYDEFACT says.
   If YYTABLE_NINF, syntax error.  */
#define YYTABLE_NINF -137
static const short yytable[] =
{
      12,    44,   128,   122,   128,   128,    13,     4,    25,    26,
      27,     4,   178,    18,   193,   161,   179,  -136,   230,    28,
      29,   236,    30,   222,   185,  -136,   162,    14,   134,   163,
     235,   237,   231,    22,   186,   187,    31,    32,    33,   183,
    -136,   135,   184,    34,     3,    35,   194,   195,    36,   139,
      10,   198,    11,  -136,   211,    37,   140,   235,   -25,    15,
      38,    39,   199,   200,    40,   137,    17,    41,   245,   246,
      42,   145,   232,   226,   136,   113,   114,   115,    18,    23,
      24,   149,    20,     5,   157,   223,  -136,   129,   130,   129,
     129,    21,   141,   118,    25,    26,    27,     4,   150,   151,
     152,   121,   124,   156,   125,    28,    29,   145,    30,   142,
     165,   166,   167,   148,   159,   173,   -51,   174,   -51,   175,
     176,   182,    31,    32,    33,   189,   190,   196,   197,    34,
     207,    35,   203,   212,    36,   218,   217,    25,    26,    27,
       4,    37,   227,     7,   219,   221,    38,    39,    28,    29,
      40,    30,   229,    41,   239,   249,    42,   138,   247,   241,
     127,   -51,   205,   206,   244,    31,    32,    33,   240,   208,
     210,   -51,    34,   180,    35,   120,   242,    36,   216,     9,
       0,     0,     0,     0,    37,     0,   215,     0,     0,    38,
      39,     0,     0,    40,     0,   228,    41,     0,     0,    42,
       0,     0,     0,    68,     0,     0,    69,     0,    70,    71,
       0,    72,     0,     0,   -51,   243,    73,     0,    74,    75,
      76,     0,    77,     0,    78,     0,   215,     0,    79,    80,
       0,     0,     0,     0,    81,     0,    82,     0,     0,    83,
       0,     0,    84,     0,     0,    85,    86,    87,     0,    88,
       0,    89,    90,     0,    91,     0,     0,    92,     0,     0,
      93,    94,     0,    95,    96,     0,    97,    98,    99,   100,
     101,     0,     0,     0,   102,   103,   104,    68,   105,   106,
       0,     0,    70,    71,     0,    72,     0,     0,     0,     0,
      73,     0,    74,    75,     0,     0,    77,     0,    78,     0,
       0,     0,    79,    80,     0,     0,     0,     0,    81,     0,
      82,     0,     0,    83,     0,     0,    84,     0,     0,    85,
      86,    87,     0,    88,     0,    89,    90,     0,    91,     0,
       0,    92,     0,     0,    93,    94,     0,    95,    96,     0,
      97,    98,    99,   100,   101,     0,     0,     0,   102,   103,
     104,     0,   105,   106,    25,    26,    27,     4,     0,     0,
       0,     0,     0,     0,     0,    28,    29,     0,    30,     0,
       0,     0,     0,     0,     0,     0,   -51,   -51,   -51,     0,
       0,     0,    31,    32,    33,     0,     0,     0,     0,    34,
       0,    35,     0,     0,    36,     0,     0,    25,    26,    27,
       4,    37,     0,     0,     0,     0,    38,    39,    28,    29,
      40,    30,     0,    41,     0,     0,    42,    25,    26,    27,
       4,   -51,     0,     0,   -51,    31,    32,    33,    28,    29,
       0,    30,    34,     0,    35,     0,     0,    36,     0,     0,
       0,   -51,     0,     0,    37,    31,    32,    33,     0,    38,
      39,     0,    34,    40,    35,     0,    41,    36,     0,    42,
       0,     0,     0,     0,    37,     0,     0,     0,     0,    38,
      39,     0,     0,    40,     0,     0,    41,     0,     0,    42
};

static const short yycheck[] =
{
       4,    17,    13,    39,    13,    13,    68,    17,    14,    15,
      16,    17,   145,    31,   159,   131,    36,    23,    69,    25,
      26,    46,    28,    32,   155,    31,    91,    89,    46,    94,
     219,    56,    83,    40,    36,    37,    42,    43,    44,    94,
      46,    59,    97,    49,     0,    51,   162,   168,    54,    20,
      14,   172,    16,    59,   187,    61,    27,   246,    29,    94,
      66,    67,    14,    15,    70,    69,    23,    73,    96,    97,
      76,    91,   217,   204,    92,    14,    15,    16,    31,    86,
      87,   117,    18,    93,   120,    94,    92,    98,    99,    98,
      98,    35,    63,    34,    14,    15,    16,    17,    14,    15,
      16,    94,    94,   119,    41,    25,    26,    91,    28,    80,
      14,    15,    16,    94,    38,    18,    36,    46,    38,    80,
      29,    55,    42,    43,    44,    94,    91,    52,    38,    49,
      38,    51,    64,    38,    54,    94,    59,    14,    15,    16,
      17,    61,    25,     2,    95,    66,    66,    67,    25,    26,
      70,    28,    51,    73,    94,   246,    76,   107,   235,    94,
      45,    38,   178,   179,    94,    42,    43,    44,   228,   184,
     186,    91,    49,   146,    51,    37,   230,    54,   191,     2,
      -1,    -1,    -1,    -1,    61,    -1,   190,    -1,    -1,    66,
      67,    -1,    -1,    70,    -1,   211,    73,    -1,    -1,    76,
      -1,    -1,    -1,    14,    -1,    -1,    17,    -1,    19,    20,
      -1,    22,    -1,    -1,    91,   231,    27,    -1,    29,    30,
      31,    -1,    33,    -1,    35,    -1,   230,    -1,    39,    40,
      -1,    -1,    -1,    -1,    45,    -1,    47,    -1,    -1,    50,
      -1,    -1,    53,    -1,    -1,    56,    57,    58,    -1,    60,
      -1,    62,    63,    -1,    65,    -1,    -1,    68,    -1,    -1,
      71,    72,    -1,    74,    75,    -1,    77,    78,    79,    80,
      81,    -1,    -1,    -1,    85,    86,    87,    14,    89,    90,
      -1,    -1,    19,    20,    -1,    22,    -1,    -1,    -1,    -1,
      27,    -1,    29,    30,    -1,    -1,    33,    -1,    35,    -1,
      -1,    -1,    39,    40,    -1,    -1,    -1,    -1,    45,    -1,
      47,    -1,    -1,    50,    -1,    -1,    53,    -1,    -1,    56,
      57,    58,    -1,    60,    -1,    62,    63,    -1,    65,    -1,
      -1,    68,    -1,    -1,    71,    72,    -1,    74,    75,    -1,
      77,    78,    79,    80,    81,    -1,    -1,    -1,    85,    86,
      87,    -1,    89,    90,    14,    15,    16,    17,    -1,    -1,
      -1,    -1,    -1,    -1,    -1,    25,    26,    -1,    28,    -1,
      -1,    -1,    -1,    -1,    -1,    -1,    36,    37,    38,    -1,
      -1,    -1,    42,    43,    44,    -1,    -1,    -1,    -1,    49,
      -1,    51,    -1,    -1,    54,    -1,    -1,    14,    15,    16,
      17,    61,    -1,    -1,    -1,    -1,    66,    67,    25,    26,
      70,    28,    -1,    73,    -1,    -1,    76,    14,    15,    16,
      17,    38,    -1,    -1,    41,    42,    43,    44,    25,    26,
      -1,    28,    49,    -1,    51,    -1,    -1,    54,    -1,    -1,
      -1,    38,    -1,    -1,    61,    42,    43,    44,    -1,    66,
      67,    -1,    49,    70,    51,    -1,    73,    54,    -1,    76,
      -1,    -1,    -1,    -1,    61,    -1,    -1,    -1,    -1,    66,
      67,    -1,    -1,    70,    -1,    -1,    73,    -1,    -1,    76
};

/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
   symbol of state STATE-NUM.  */
static const unsigned char yystos[] =
{
       0,   101,   102,     0,    17,    93,   103,   105,   106,   173,
      14,    16,   176,    68,    89,    94,   104,    23,    31,   107,
      18,    35,    40,    86,    87,    14,    15,    16,    25,    26,
      28,    42,    43,    44,    49,    51,    54,    61,    66,    67,
      70,    73,    76,   105,   126,   127,   128,   129,   130,   131,
     136,   137,   139,   144,   145,   146,   149,   150,   151,   152,
     154,   155,   156,   157,   158,   160,   161,   173,    14,    17,
      19,    20,    22,    27,    29,    30,    31,    33,    35,    39,
      40,    45,    47,    50,    53,    56,    57,    58,    60,    62,
      63,    65,    68,    71,    72,    74,    75,    77,    78,    79,
      80,    81,    85,    86,    87,    89,    90,   108,   109,   110,
     119,   177,   140,    14,    15,    16,   162,   159,    34,   171,
     159,    94,   162,   169,    94,    41,   163,   128,    13,    98,
      99,   125,   174,   176,    46,    59,    92,   176,   109,    20,
      27,    63,    80,   112,   120,    91,   141,   142,    94,   162,
      14,    15,    16,   132,   133,   135,   126,   162,   164,    38,
     170,   169,    91,    94,   175,    14,    15,    16,   147,   148,
     126,   153,   172,    18,    46,    80,    29,   121,   171,    36,
     142,   143,    55,    94,    97,   125,    36,    37,   138,    94,
      91,   165,   166,   174,   169,   153,    52,    38,   153,    14,
      15,   118,   111,    64,   122,   126,   126,    38,   133,   134,
     126,   171,    38,   167,   168,   176,   166,    59,    94,    95,
     114,    66,    32,    94,   123,   124,   125,    25,   126,    51,
      69,    83,   174,   115,   116,   119,    46,    56,   117,    94,
     138,    94,   168,   126,    94,    96,    97,   121,   113,   116
};

#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
# define YYSIZE_T __SIZE_TYPE__
#endif
#if ! defined (YYSIZE_T) && defined (size_t)
# define YYSIZE_T size_t
#endif
#if ! defined (YYSIZE_T)
# if defined (__STDC__) || defined (__cplusplus)
#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
#  define YYSIZE_T size_t
# endif
#endif
#if ! defined (YYSIZE_T)
# define YYSIZE_T unsigned int
#endif

#define yyerrok		(yyerrstatus = 0)
#define yyclearin	(yychar = YYEMPTY)
#define YYEMPTY		(-2)
#define YYEOF		0

#define YYACCEPT	goto yyacceptlab
#define YYABORT		goto yyabortlab
#define YYERROR		goto 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);						\
      yytoken = YYTRANSLATE (yychar);				\
      YYPOPSTACK;						\
      goto yybackup;						\
    }								\
  else								\
    { 								\
      yyerror ("syntax error: cannot back up");\
      YYERROR;							\
    }								\
while (0)

#define YYTERROR	1
#define YYERRCODE	256

/* YYLLOC_DEFAULT -- Compute the default location (before the actions
   are run).  */

#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N)         \
  Current.first_line   = Rhs[1].first_line;      \
  Current.first_column = Rhs[1].first_column;    \
  Current.last_line    = Rhs[N].last_line;       \
  Current.last_column  = Rhs[N].last_column;
#endif

/* YYLEX -- calling `yylex' with the right arguments.  */

#ifdef YYLEX_PARAM
# define YYLEX yylex (YYLEX_PARAM)
#else
# define YYLEX yylex ()
#endif

/* Enable debugging if requested.  */
#if YYDEBUG

# ifndef YYFPRINTF
#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
#  define YYFPRINTF fprintf
# endif

# define YYDPRINTF(Args)			\
do {						\
  if (yydebug)					\
    YYFPRINTF Args;				\
} while (0)

# define YYDSYMPRINT(Args)			\
do {						\
  if (yydebug)					\
    yysymprint Args;				\
} while (0)

# define YYDSYMPRINTF(Title, Token, Value, Location)		\
do {								\
  if (yydebug)							\
    {								\
      YYFPRINTF (stderr, "%s ", Title);				\
      yysymprint (stderr, 					\
                  Token, Value, Location);	\
      YYFPRINTF (stderr, "\n");					\
    }								\
} while (0)

/*------------------------------------------------------------------.
| yy_stack_print -- Print the state stack from its BOTTOM up to its |
| TOP (cinluded).                                                   |
`------------------------------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yy_stack_print (short *bottom, short *top)
#else
static void
yy_stack_print (bottom, top)
    short *bottom;
    short *top;
#endif
{
  YYFPRINTF (stderr, "Stack now");
  for (/* Nothing. */; bottom <= top; ++bottom)
    YYFPRINTF (stderr, " %d", *bottom);
  YYFPRINTF (stderr, "\n");
}

# define YY_STACK_PRINT(Bottom, Top)				\
do {								\
  if (yydebug)							\
    yy_stack_print ((Bottom), (Top));				\
} while (0)


/*------------------------------------------------.
| Report that the YYRULE is going to be reduced.  |
`------------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yy_reduce_print (int yyrule)
#else
static void
yy_reduce_print (yyrule)
    int yyrule;
#endif
{
  int yyi;
  unsigned int yylineno = yyrline[yyrule];
  YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
             yyrule - 1, yylineno);
  /* Print the symbols being reduced, and their result.  */
  for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
    YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
  YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
}

# define YY_REDUCE_PRINT(Rule)		\
do {					\
  if (yydebug)				\
    yy_reduce_print (Rule);		\
} while (0)

/* Nonzero means print parse trace.  It is left uninitialized so that
   multiple parsers can coexist.  */
int yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
# define YYDSYMPRINT(Args)
# define YYDSYMPRINTF(Title, Token, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
#endif /* !YYDEBUG */


/* YYINITDEPTH -- initial size of the parser's stacks.  */
#ifndef	YYINITDEPTH
# define YYINITDEPTH 200
#endif

/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
   if the built-in stack extension method is used).

   Do not make this value too large; the results are undefined if
   SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
   evaluated with infinite-precision integer arithmetic.  */

#if YYMAXDEPTH == 0
# undef YYMAXDEPTH
#endif

#ifndef YYMAXDEPTH
# define YYMAXDEPTH 10000
#endif



#if YYERROR_VERBOSE

# ifndef yystrlen
#  if defined (__GLIBC__) && defined (_STRING_H)
#   define yystrlen strlen
#  else
/* Return the length of YYSTR.  */
static YYSIZE_T
#   if defined (__STDC__) || defined (__cplusplus)
yystrlen (const char *yystr)
#   else
yystrlen (yystr)
     const char *yystr;
#   endif
{
  register const char *yys = yystr;

  while (*yys++ != '\0')
    continue;

  return yys - yystr - 1;
}
#  endif
# endif

# ifndef yystpcpy
#  if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
#   define yystpcpy stpcpy
#  else
/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
   YYDEST.  */
static char *
#   if defined (__STDC__) || defined (__cplusplus)
yystpcpy (char *yydest, const char *yysrc)
#   else
yystpcpy (yydest, yysrc)
     char *yydest;
     const char *yysrc;
#   endif
{
  register char *yyd = yydest;
  register const char *yys = yysrc;

  while ((*yyd++ = *yys++) != '\0')
    continue;

  return yyd - 1;
}
#  endif
# endif

#endif /* !YYERROR_VERBOSE */



#if YYDEBUG
/*--------------------------------.
| Print this symbol on YYOUTPUT.  |
`--------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yysymprint (FILE *yyoutput, int yytype, YYSTYPE *yyvaluep, YYLTYPE *yylocationp)
#else
static void
yysymprint (yyoutput, yytype, yyvaluep, yylocationp)
    FILE *yyoutput;
    int yytype;
    YYSTYPE *yyvaluep;
    YYLTYPE *yylocationp;
#endif
{
  /* Pacify ``unused variable'' warnings.  */
  (void) yyvaluep;
  (void) yylocationp;

  if (yytype < YYNTOKENS)
    {
      YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
# ifdef YYPRINT
      YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
# endif
    }
  else
    YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);

  switch (yytype)
    {
      default:
        break;
    }
  YYFPRINTF (yyoutput, ")");
}

#endif /* ! YYDEBUG */
/*-----------------------------------------------.
| Release the memory associated to this symbol.  |
`-----------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
yydestruct (int yytype, YYSTYPE *yyvaluep, YYLTYPE *yylocationp)
#else
static void
yydestruct (yytype, yyvaluep, yylocationp)
    int yytype;
    YYSTYPE *yyvaluep;
    YYLTYPE *yylocationp;
#endif
{
  /* Pacify ``unused variable'' warnings.  */
  (void) yyvaluep;
  (void) yylocationp;

  switch (yytype)
    {

      default:
        break;
    }
}


/* Prevent warnings from -Wmissing-prototypes.  */

#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int yyparse (void *YYPARSE_PARAM);
# else
int yyparse ();
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int yyparse (void);
#else
int yyparse ();
#endif
#endif /* ! YYPARSE_PARAM */



/* The lookahead symbol.  */
int yychar;

/* The semantic value of the lookahead symbol.  */
YYSTYPE yylval;

/* Number of syntax errors so far.  */
int yynerrs;
/* Location data for the lookahead symbol.  */
YYLTYPE yylloc;



/*----------.
| yyparse.  |
`----------*/

#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int yyparse (void *YYPARSE_PARAM)
# else
int yyparse (YYPARSE_PARAM)
  void *YYPARSE_PARAM;
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int
yyparse (void)
#else
int
yyparse ()

#endif
#endif
{
  
  register int yystate;
  register int yyn;
  int yyresult;
  /* Number of tokens to shift before error messages enabled.  */
  int yyerrstatus;
  /* Lookahead token as an internal (translated) token number.  */
  int yytoken = 0;

  /* Three stacks and their tools:
     `yyss': related to states,
     `yyvs': related to semantic values,
     `yyls': related to locations.

     Refer to the stacks thru separate pointers, to allow yyoverflow
     to reallocate them elsewhere.  */

  /* The state stack.  */
  short	yyssa[YYINITDEPTH];
  short *yyss = yyssa;
  register short *yyssp;

  /* The semantic value stack.  */
  YYSTYPE yyvsa[YYINITDEPTH];
  YYSTYPE *yyvs = yyvsa;
  register YYSTYPE *yyvsp;

  /* The location stack.  */
  YYLTYPE yylsa[YYINITDEPTH];
  YYLTYPE *yyls = yylsa;
  YYLTYPE *yylsp;
  YYLTYPE *yylerrsp;

#define YYPOPSTACK   (yyvsp--, yyssp--, yylsp--)

  YYSIZE_T yystacksize = YYINITDEPTH;

  /* The variables used to return semantic value and location from the
     action routines.  */
  YYSTYPE yyval;
  YYLTYPE yyloc;

  /* When reducing, the number of symbols on the RHS of the reduced
     rule.  */
  int yylen;

  YYDPRINTF ((stderr, "Starting parse\n"));

  yystate = 0;
  yyerrstatus = 0;
  yynerrs = 0;
  yychar = YYEMPTY;		/* Cause a token to be read.  */

  /* Initialize stack pointers.
     Waste one element of value and location stack
     so that they stay on the same level as the state stack.
     The wasted elements are never initialized.  */

  yyssp = yyss;
  yyvsp = yyvs;
  yylsp = yyls;
  goto yysetstate;

/*------------------------------------------------------------.
| yynewstate -- Push a new state, which is found in yystate.  |
`------------------------------------------------------------*/
 yynewstate:
  /* In all cases, when you get here, the value and location stacks
     have just been pushed. so pushing a state here evens the stacks.
     */
  yyssp++;

 yysetstate:
  *yyssp = yystate;

  if (yyss + yystacksize - 1 <= yyssp)
    {
      /* Get the current used size of the three stacks, in elements.  */
      YYSIZE_T yysize = yyssp - yyss + 1;

#ifdef yyoverflow
      {
	/* Give user a chance to reallocate the stack. Use copies of
	   these so that the &'s don't force the real ones into
	   memory.  */
	YYSTYPE *yyvs1 = yyvs;
	short *yyss1 = yyss;
	YYLTYPE *yyls1 = yyls;

	/* Each stack pointer address is followed by the size of the
	   data in use in that stack, in bytes.  This used to be a
	   conditional around just the two extra args, but that might
	   be undefined if yyoverflow is a macro.  */
	yyoverflow ("parser stack overflow",
		    &yyss1, yysize * sizeof (*yyssp),
		    &yyvs1, yysize * sizeof (*yyvsp),
		    &yyls1, yysize * sizeof (*yylsp),
		    &yystacksize);
	yyls = yyls1;
	yyss = yyss1;
	yyvs = yyvs1;
      }
#else /* no yyoverflow */
# ifndef YYSTACK_RELOCATE
      goto yyoverflowlab;
# else
      /* Extend the stack our own way.  */
      if (YYMAXDEPTH <= yystacksize)
	goto yyoverflowlab;
      yystacksize *= 2;
      if (YYMAXDEPTH < yystacksize)
	yystacksize = YYMAXDEPTH;

      {
	short *yyss1 = yyss;
	union yyalloc *yyptr =
	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
	if (! yyptr)
	  goto yyoverflowlab;
	YYSTACK_RELOCATE (yyss);
	YYSTACK_RELOCATE (yyvs);
	YYSTACK_RELOCATE (yyls);
#  undef YYSTACK_RELOCATE
	if (yyss1 != yyssa)
	  YYSTACK_FREE (yyss1);
      }
# endif
#endif /* no yyoverflow */

      yyssp = yyss + yysize - 1;
      yyvsp = yyvs + yysize - 1;
      yylsp = yyls + yysize - 1;

      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
		  (unsigned long int) yystacksize));

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

  YYDPRINTF ((stderr, "Entering state %d\n", yystate));

  goto yybackup;

/*-----------.
| yybackup.  |
`-----------*/
yybackup:

/* Do appropriate processing given the current state.  */
/* Read a lookahead token if we need one and don't already have one.  */
/* yyresume: */

  /* First try to decide what to do without reference to lookahead token.  */

  yyn = yypact[yystate];
  if (yyn == YYPACT_NINF)
    goto yydefault;

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

  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */
  if (yychar == YYEMPTY)
    {
      YYDPRINTF ((stderr, "Reading a token: "));
      yychar = YYLEX;
    }

  if (yychar <= YYEOF)
    {
      yychar = yytoken = YYEOF;
      YYDPRINTF ((stderr, "Now at end of input.\n"));
    }
  else
    {
      yytoken = YYTRANSLATE (yychar);
      YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);
    }

  /* If the proper action on seeing token YYTOKEN is to reduce or to
     detect an error, take that action.  */
  yyn += yytoken;
  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
    goto yydefault;
  yyn = yytable[yyn];
  if (yyn <= 0)
    {
      if (yyn == 0 || yyn == YYTABLE_NINF)
	goto yyerrlab;
      yyn = -yyn;
      goto yyreduce;
    }

  if (yyn == YYFINAL)
    YYACCEPT;

  /* Shift the lookahead token.  */
  YYDPRINTF ((stderr, "Shifting token %s, ", yytname[yytoken]));

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

  *++yyvsp = yylval;
  *++yylsp = yylloc;

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

  yystate = yyn;
  goto yynewstate;


/*-----------------------------------------------------------.
| yydefault -- do the default action for the current state.  |
`-----------------------------------------------------------*/
yydefault:
  yyn = yydefact[yystate];
  if (yyn == 0)
    goto yyerrlab;
  goto yyreduce;


/*-----------------------------.
| yyreduce -- Do a reduction.  |
`-----------------------------*/
yyreduce:
  /* yyn is the number of a rule to reduce with.  */
  yylen = yyr2[yyn];

  /* If YYLEN is nonzero, implement the default value of the action:
     `$$ = $1'.

     Otherwise, the following line sets YYVAL to garbage.
     This behavior is undocumented and Bison
     users should not rely upon it.  Assigning to YYVAL
     unconditionally makes the parser a bit smaller, and it avoids a
     GCC warning that YYVAL may be used uninitialized.  */
  yyval = yyvsp[1-yylen];

  /* Default location. */
  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);
  YY_REDUCE_PRINT (yyn);
  switch (yyn)
    {
        case 2:
#line 317 "gram.y"
    {
						plpgsql_parse_result = (PLpgSQL_stmt_block *) yyvsp[-1].stmt;
					;}
    break;

  case 5:
#line 327 "gram.y"
    {
						plpgsql_DumpExecTree = true;
					;}
    break;

  case 6:
#line 331 "gram.y"
    {
						plpgsql_curr_compile->resolve_option = PLPGSQL_RESOLVE_ERROR;
					;}
    break;

  case 7:
#line 335 "gram.y"
    {
						plpgsql_curr_compile->resolve_option = PLPGSQL_RESOLVE_VARIABLE;
					;}
    break;

  case 8:
#line 339 "gram.y"
    {
						plpgsql_curr_compile->resolve_option = PLPGSQL_RESOLVE_COLUMN;
					;}
    break;

  case 11:
#line 349 "gram.y"
    {
						PLpgSQL_stmt_block *new;

						new = palloc0(sizeof(PLpgSQL_stmt_block));

						new->cmd_type	= PLPGSQL_STMT_BLOCK;
						new->lineno		= plpgsql_location_to_lineno(yylsp[-4]);
						new->label		= yyvsp[-5].declhdr.label;
						new->n_initvars = yyvsp[-5].declhdr.n_initvars;
						new->initvarnos = yyvsp[-5].declhdr.initvarnos;
						new->body		= yyvsp[-3].list;
						new->exceptions	= yyvsp[-2].exception_block;

						check_labels(yyvsp[-5].declhdr.label, yyvsp[0].str, yylsp[0]);
						plpgsql_ns_pop();

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 12:
#line 371 "gram.y"
    {
						/* done with decls, so resume identifier lookup */
						plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_NORMAL;
						yyval.declhdr.label	  = yyvsp[0].str;
						yyval.declhdr.n_initvars = 0;
						yyval.declhdr.initvarnos = NULL;
					;}
    break;

  case 13:
#line 379 "gram.y"
    {
						plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_NORMAL;
						yyval.declhdr.label	  = yyvsp[-1].str;
						yyval.declhdr.n_initvars = 0;
						yyval.declhdr.initvarnos = NULL;
					;}
    break;

  case 14:
#line 386 "gram.y"
    {
						plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_NORMAL;
						yyval.declhdr.label	  = yyvsp[-2].str;
						/* Remember variables declared in decl_stmts */
						yyval.declhdr.n_initvars = plpgsql_add_initdatums(&(yyval.declhdr.initvarnos));
					;}
    break;

  case 15:
#line 395 "gram.y"
    {
						/* Forget any variables created before block */
						plpgsql_add_initdatums(NULL);
						/*
						 * Disable scanner lookup of identifiers while
						 * we process the decl_stmts
						 */
						plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_DECLARE;
					;}
    break;

  case 19:
#line 412 "gram.y"
    {
						/* We allow useless extra DECLAREs */
					;}
    break;

  case 20:
#line 416 "gram.y"
    {
						/*
						 * Throw a helpful error if user tries to put block
						 * label just before BEGIN, instead of before DECLARE.
						 */
						ereport(ERROR,
								(errcode(ERRCODE_SYNTAX_ERROR),
								 errmsg("block label must be placed before DECLARE, not after"),
								 parser_errposition(yylsp[-2])));
					;}
    break;

  case 21:
#line 429 "gram.y"
    {
						PLpgSQL_variable	*var;

						var = plpgsql_build_variable(yyvsp[-4].varname.name, yyvsp[-4].varname.lineno,
													 yyvsp[-2].dtype, true);
						if (yyvsp[-3].boolean)
						{
							if (var->dtype == PLPGSQL_DTYPE_VAR)
								((PLpgSQL_var *) var)->isconst = yyvsp[-3].boolean;
							else
								ereport(ERROR,
										(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
										 errmsg("row or record variable cannot be CONSTANT"),
										 parser_errposition(yylsp[-3])));
						}
						if (yyvsp[-1].boolean)
						{
							if (var->dtype == PLPGSQL_DTYPE_VAR)
								((PLpgSQL_var *) var)->notnull = yyvsp[-1].boolean;
							else
								ereport(ERROR,
										(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
										 errmsg("row or record variable cannot be NOT NULL"),
										 parser_errposition(yylsp[-1])));

						}
						if (yyvsp[0].expr != NULL)
						{
							if (var->dtype == PLPGSQL_DTYPE_VAR)
								((PLpgSQL_var *) var)->default_val = yyvsp[0].expr;
							else
								ereport(ERROR,
										(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
										 errmsg("default value for row or record variable is not supported"),
										 parser_errposition(yylsp[0])));
						}
					;}
    break;

  case 22:
#line 467 "gram.y"
    {
						plpgsql_ns_additem(yyvsp[-1].nsitem->itemtype,
										   yyvsp[-1].nsitem->itemno, yyvsp[-4].varname.name);
					;}
    break;

  case 23:
#line 472 "gram.y"
    { plpgsql_ns_push(yyvsp[-2].varname.name); ;}
    break;

  case 24:
#line 474 "gram.y"
    {
						PLpgSQL_var *new;
						PLpgSQL_expr *curname_def;
						char		buf[1024];
						char		*cp1;
						char		*cp2;

						/* pop local namespace for cursor args */
						plpgsql_ns_pop();

						new = (PLpgSQL_var *)
							plpgsql_build_variable(yyvsp[-6].varname.name, yyvsp[-6].varname.lineno,
												   plpgsql_build_datatype(REFCURSOROID,
																		  -1),
												   true);

						curname_def = palloc0(sizeof(PLpgSQL_expr));

						curname_def->dtype = PLPGSQL_DTYPE_EXPR;
						strcpy(buf, "SELECT ");
						cp1 = new->refname;
						cp2 = buf + strlen(buf);
						/*
						 * Don't trust standard_conforming_strings here;
						 * it might change before we use the string.
						 */
						if (strchr(cp1, '\\') != NULL)
							*cp2++ = ESCAPE_STRING_SYNTAX;
						*cp2++ = '\'';
						while (*cp1)
						{
							if (SQL_STR_DOUBLE(*cp1, true))
								*cp2++ = *cp1;
							*cp2++ = *cp1++;
						}
						strcpy(cp2, "'::pg_catalog.refcursor");
						curname_def->query = pstrdup(buf);
						new->default_val = curname_def;

						new->cursor_explicit_expr = yyvsp[0].expr;
						if (yyvsp[-2].datum == NULL)
							new->cursor_explicit_argrow = -1;
						else
							new->cursor_explicit_argrow = yyvsp[-2].datum->dno;
						new->cursor_options = CURSOR_OPT_FAST_PLAN | yyvsp[-5].ival;
					;}
    break;

  case 25:
#line 523 "gram.y"
    {
						yyval.ival = 0;
					;}
    break;

  case 26:
#line 527 "gram.y"
    {
						yyval.ival = CURSOR_OPT_NO_SCROLL;
					;}
    break;

  case 27:
#line 531 "gram.y"
    {
						yyval.ival = CURSOR_OPT_SCROLL;
					;}
    break;

  case 28:
#line 537 "gram.y"
    {
						yyval.expr = read_sql_stmt("");
					;}
    break;

  case 29:
#line 543 "gram.y"
    {
						yyval.datum = NULL;
					;}
    break;

  case 30:
#line 547 "gram.y"
    {
						PLpgSQL_row *new;
						int i;
						ListCell *l;

						new = palloc0(sizeof(PLpgSQL_row));
						new->dtype = PLPGSQL_DTYPE_ROW;
						new->lineno = plpgsql_location_to_lineno(yylsp[-2]);
						new->rowtupdesc = NULL;
						new->nfields = list_length(yyvsp[-1].list);
						new->fieldnames = palloc(new->nfields * sizeof(char *));
						new->varnos = palloc(new->nfields * sizeof(int));

						i = 0;
						foreach (l, yyvsp[-1].list)
						{
							PLpgSQL_variable *arg = (PLpgSQL_variable *) lfirst(l);
							new->fieldnames[i] = arg->refname;
							new->varnos[i] = arg->dno;
							i++;
						}
						list_free(yyvsp[-1].list);

						plpgsql_adddatum((PLpgSQL_datum *) new);
						yyval.datum = (PLpgSQL_datum *) new;
					;}
    break;

  case 31:
#line 576 "gram.y"
    {
						yyval.list = list_make1(yyvsp[0].datum);
					;}
    break;

  case 32:
#line 580 "gram.y"
    {
						yyval.list = lappend(yyvsp[-2].list, yyvsp[0].datum);
					;}
    break;

  case 33:
#line 586 "gram.y"
    {
						yyval.datum = (PLpgSQL_datum *)
							plpgsql_build_variable(yyvsp[-1].varname.name, yyvsp[-1].varname.lineno,
												   yyvsp[0].dtype, true);
					;}
    break;

  case 36:
#line 597 "gram.y"
    {
						PLpgSQL_nsitem *nsi;

						nsi = plpgsql_ns_lookup(plpgsql_ns_top(), false,
												yyvsp[0].word.ident, NULL, NULL,
												NULL);
						if (nsi == NULL)
							ereport(ERROR,
									(errcode(ERRCODE_UNDEFINED_OBJECT),
									 errmsg("variable \"%s\" does not exist",
											yyvsp[0].word.ident),
									 parser_errposition(yylsp[0])));
						yyval.nsitem = nsi;
					;}
    break;

  case 37:
#line 612 "gram.y"
    {
						PLpgSQL_nsitem *nsi;

						if (list_length(yyvsp[0].cword.idents) == 2)
							nsi = plpgsql_ns_lookup(plpgsql_ns_top(), false,
													strVal(linitial(yyvsp[0].cword.idents)),
													strVal(lsecond(yyvsp[0].cword.idents)),
													NULL,
													NULL);
						else if (list_length(yyvsp[0].cword.idents) == 3)
							nsi = plpgsql_ns_lookup(plpgsql_ns_top(), false,
													strVal(linitial(yyvsp[0].cword.idents)),
													strVal(lsecond(yyvsp[0].cword.idents)),
													strVal(lthird(yyvsp[0].cword.idents)),
													NULL);
						else
							nsi = NULL;
						if (nsi == NULL)
							ereport(ERROR,
									(errcode(ERRCODE_UNDEFINED_OBJECT),
									 errmsg("variable \"%s\" does not exist",
											NameListToString(yyvsp[0].cword.idents)),
									 parser_errposition(yylsp[0])));
						yyval.nsitem = nsi;
					;}
    break;

  case 38:
#line 640 "gram.y"
    {
						yyval.varname.name = yyvsp[0].word.ident;
						yyval.varname.lineno = plpgsql_location_to_lineno(yylsp[0]);
						/*
						 * Check to make sure name isn't already declared
						 * in the current block.
						 */
						if (plpgsql_ns_lookup(plpgsql_ns_top(), true,
											  yyvsp[0].word.ident, NULL, NULL,
											  NULL) != NULL)
							yyerror("duplicate declaration");
					;}
    break;

  case 39:
#line 653 "gram.y"
    {
						yyval.varname.name = pstrdup(yyvsp[0].keyword);
						yyval.varname.lineno = plpgsql_location_to_lineno(yylsp[0]);
						/*
						 * Check to make sure name isn't already declared
						 * in the current block.
						 */
						if (plpgsql_ns_lookup(plpgsql_ns_top(), true,
											  yyvsp[0].keyword, NULL, NULL,
											  NULL) != NULL)
							yyerror("duplicate declaration");
					;}
    break;

  case 40:
#line 668 "gram.y"
    { yyval.boolean = false; ;}
    break;

  case 41:
#line 670 "gram.y"
    { yyval.boolean = true; ;}
    break;

  case 42:
#line 674 "gram.y"
    {
						/*
						 * If there's a lookahead token, read_datatype
						 * should consume it.
						 */
						yyval.dtype = read_datatype(yychar);
						yyclearin;
					;}
    break;

  case 43:
#line 685 "gram.y"
    { yyval.boolean = false; ;}
    break;

  case 44:
#line 687 "gram.y"
    { yyval.boolean = true; ;}
    break;

  case 45:
#line 691 "gram.y"
    { yyval.expr = NULL; ;}
    break;

  case 46:
#line 693 "gram.y"
    {
						yyval.expr = read_sql_expression(';', ";");
					;}
    break;

  case 51:
#line 707 "gram.y"
    { yyval.list = NIL; ;}
    break;

  case 52:
#line 709 "gram.y"
    { yyval.list = yyvsp[0].list; ;}
    break;

  case 53:
#line 713 "gram.y"
    {
							if (yyvsp[0].stmt == NULL)
								yyval.list = yyvsp[-1].list;
							else
								yyval.list = lappend(yyvsp[-1].list, yyvsp[0].stmt);
						;}
    break;

  case 54:
#line 720 "gram.y"
    {
							if (yyvsp[0].stmt == NULL)
								yyval.list = NIL;
							else
								yyval.list = list_make1(yyvsp[0].stmt);
						;}
    break;

  case 55:
#line 729 "gram.y"
    { yyval.stmt = yyvsp[-1].stmt; ;}
    break;

  case 56:
#line 731 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 57:
#line 733 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 58:
#line 735 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 59:
#line 737 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 60:
#line 739 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 61:
#line 741 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 62:
#line 743 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 63:
#line 745 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 64:
#line 747 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 65:
#line 749 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 66:
#line 751 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 67:
#line 753 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 68:
#line 755 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 69:
#line 757 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 70:
#line 759 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 71:
#line 761 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 72:
#line 763 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 73:
#line 765 "gram.y"
    { yyval.stmt = yyvsp[0].stmt; ;}
    break;

  case 74:
#line 769 "gram.y"
    {
						PLpgSQL_stmt_perform *new;

						new = palloc0(sizeof(PLpgSQL_stmt_perform));
						new->cmd_type = PLPGSQL_STMT_PERFORM;
						new->lineno   = plpgsql_location_to_lineno(yylsp[-1]);
						new->expr  = yyvsp[0].expr;

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 75:
#line 782 "gram.y"
    {
						PLpgSQL_stmt_assign *new;

						new = palloc0(sizeof(PLpgSQL_stmt_assign));
						new->cmd_type = PLPGSQL_STMT_ASSIGN;
						new->lineno   = plpgsql_location_to_lineno(yylsp[-2]);
						new->varno = yyvsp[-2].ival;
						new->expr  = yyvsp[0].expr;

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 76:
#line 796 "gram.y"
    {
						PLpgSQL_stmt_getdiag	 *new;

						new = palloc0(sizeof(PLpgSQL_stmt_getdiag));
						new->cmd_type = PLPGSQL_STMT_GETDIAG;
						new->lineno   = plpgsql_location_to_lineno(yylsp[-3]);
						new->diag_items  = yyvsp[-1].list;

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 77:
#line 809 "gram.y"
    {
						yyval.list = lappend(yyvsp[-2].list, yyvsp[0].diagitem);
					;}
    break;

  case 78:
#line 813 "gram.y"
    {
						yyval.list = list_make1(yyvsp[0].diagitem);
					;}
    break;

  case 79:
#line 819 "gram.y"
    {
						PLpgSQL_diag_item *new;

						new = palloc(sizeof(PLpgSQL_diag_item));
						new->target = yyvsp[-2].ival;
						new->kind = yyvsp[0].ival;

						yyval.diagitem = new;
					;}
    break;

  case 80:
#line 831 "gram.y"
    {
						int	tok = yylex();

						if (tok_is_keyword(tok, &yylval,
										   K_ROW_COUNT, "row_count"))
							yyval.ival = PLPGSQL_GETDIAG_ROW_COUNT;
						else if (tok_is_keyword(tok, &yylval,
												K_RESULT_OID, "result_oid"))
							yyval.ival = PLPGSQL_GETDIAG_RESULT_OID;
						else
							yyerror("unrecognized GET DIAGNOSTICS item");
					;}
    break;

  case 81:
#line 846 "gram.y"
    {
						check_assignable(yyvsp[0].wdatum.datum, yylsp[0]);
						if (yyvsp[0].wdatum.datum->dtype == PLPGSQL_DTYPE_ROW ||
							yyvsp[0].wdatum.datum->dtype == PLPGSQL_DTYPE_REC)
							ereport(ERROR,
									(errcode(ERRCODE_SYNTAX_ERROR),
									 errmsg("\"%s\" is not a scalar variable",
											NameOfDatum(&(yyvsp[0].wdatum))),
									 parser_errposition(yylsp[0])));
						yyval.ival = yyvsp[0].wdatum.datum->dno;
					;}
    break;

  case 82:
#line 858 "gram.y"
    {
						/* just to give a better message than "syntax error" */
						word_is_not_variable(&(yyvsp[0].word), yylsp[0]);
					;}
    break;

  case 83:
#line 863 "gram.y"
    {
						/* just to give a better message than "syntax error" */
						cword_is_not_variable(&(yyvsp[0].cword), yylsp[0]);
					;}
    break;

  case 84:
#line 871 "gram.y"
    {
						check_assignable(yyvsp[0].wdatum.datum, yylsp[0]);
						yyval.ival = yyvsp[0].wdatum.datum->dno;
					;}
    break;

  case 85:
#line 876 "gram.y"
    {
						PLpgSQL_arrayelem	*new;

						new = palloc0(sizeof(PLpgSQL_arrayelem));
						new->dtype		= PLPGSQL_DTYPE_ARRAYELEM;
						new->subscript	= yyvsp[0].expr;
						new->arrayparentno = yyvsp[-2].ival;

						plpgsql_adddatum((PLpgSQL_datum *) new);

						yyval.ival = new->dno;
					;}
    break;

  case 86:
#line 891 "gram.y"
    {
						PLpgSQL_stmt_if *new;

						new = palloc0(sizeof(PLpgSQL_stmt_if));
						new->cmd_type	= PLPGSQL_STMT_IF;
						new->lineno		= plpgsql_location_to_lineno(yylsp[-6]);
						new->cond		= yyvsp[-5].expr;
						new->true_body	= yyvsp[-4].list;
						new->false_body = yyvsp[-3].list;

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 87:
#line 906 "gram.y"
    {
						yyval.list = NIL;
					;}
    break;

  case 88:
#line 910 "gram.y"
    {
						/*----------
						 * Translate the structure:	   into:
						 *
						 * IF c1 THEN				   IF c1 THEN
						 *	 ...						   ...
						 * ELSIF c2 THEN			   ELSE
						 *								   IF c2 THEN
						 *	 ...							   ...
						 * ELSE							   ELSE
						 *	 ...							   ...
						 * END IF						   END IF
						 *							   END IF
						 *----------
						 */
						PLpgSQL_stmt_if *new_if;

						/* first create a new if-statement */
						new_if = palloc0(sizeof(PLpgSQL_stmt_if));
						new_if->cmd_type	= PLPGSQL_STMT_IF;
						new_if->lineno		= plpgsql_location_to_lineno(yylsp[-3]);
						new_if->cond		= yyvsp[-2].expr;
						new_if->true_body	= yyvsp[-1].list;
						new_if->false_body	= yyvsp[0].list;

						/* wrap the if-statement in a "container" list */
						yyval.list = list_make1(new_if);
					;}
    break;

  case 89:
#line 940 "gram.y"
    {
						yyval.list = yyvsp[0].list;
					;}
    break;

  case 90:
#line 946 "gram.y"
    {
						yyval.stmt = make_case(yylsp[-6], yyvsp[-5].expr, yyvsp[-4].list, yyvsp[-3].list);
					;}
    break;

  case 91:
#line 952 "gram.y"
    {
						PLpgSQL_expr *expr = NULL;
						int	tok = yylex();

						if (tok != K_WHEN)
						{
							plpgsql_push_back_token(tok);
							expr = read_sql_expression(K_WHEN, "WHEN");
						}
						plpgsql_push_back_token(K_WHEN);
						yyval.expr = expr;
					;}
    break;

  case 92:
#line 967 "gram.y"
    {
						yyval.list = lappend(yyvsp[-1].list, yyvsp[0].casewhen);
					;}
    break;

  case 93:
#line 971 "gram.y"
    {
						yyval.list = list_make1(yyvsp[0].casewhen);
					;}
    break;

  case 94:
#line 977 "gram.y"
    {
						PLpgSQL_case_when *new = palloc(sizeof(PLpgSQL_case_when));

						new->lineno	= plpgsql_location_to_lineno(yylsp[-2]);
						new->expr	= yyvsp[-1].expr;
						new->stmts	= yyvsp[0].list;
						yyval.casewhen = new;
					;}
    break;

  case 95:
#line 988 "gram.y"
    {
						yyval.list = NIL;
					;}
    break;

  case 96:
#line 992 "gram.y"
    {
						/*
						 * proc_sect could return an empty list, but we
						 * must distinguish that from not having ELSE at all.
						 * Simplest fix is to return a list with one NULL
						 * pointer, which make_case() must take care of.
						 */
						if (yyvsp[0].list != NIL)
							yyval.list = yyvsp[0].list;
						else
							yyval.list = list_make1(NULL);
					;}
    break;

  case 97:
#line 1007 "gram.y"
    {
						PLpgSQL_stmt_loop *new;

						new = palloc0(sizeof(PLpgSQL_stmt_loop));
						new->cmd_type = PLPGSQL_STMT_LOOP;
						new->lineno   = plpgsql_location_to_lineno(yylsp[-1]);
						new->label	  = yyvsp[-2].str;
						new->body	  = yyvsp[0].loop_body.stmts;

						check_labels(yyvsp[-2].str, yyvsp[0].loop_body.end_label, yyvsp[0].loop_body.end_label_location);
						plpgsql_ns_pop();

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 98:
#line 1024 "gram.y"
    {
						PLpgSQL_stmt_while *new;

						new = palloc0(sizeof(PLpgSQL_stmt_while));
						new->cmd_type = PLPGSQL_STMT_WHILE;
						new->lineno   = plpgsql_location_to_lineno(yylsp[-2]);
						new->label	  = yyvsp[-3].str;
						new->cond	  = yyvsp[-1].expr;
						new->body	  = yyvsp[0].loop_body.stmts;

						check_labels(yyvsp[-3].str, yyvsp[0].loop_body.end_label, yyvsp[0].loop_body.end_label_location);
						plpgsql_ns_pop();

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 99:
#line 1042 "gram.y"
    {
						/* This runs after we've scanned the loop body */
						if (yyvsp[-1].stmt->cmd_type == PLPGSQL_STMT_FORI)
						{
							PLpgSQL_stmt_fori		*new;

							new = (PLpgSQL_stmt_fori *) yyvsp[-1].stmt;
							new->lineno   = plpgsql_location_to_lineno(yylsp[-2]);
							new->label	  = yyvsp[-3].str;
							new->body	  = yyvsp[0].loop_body.stmts;
							yyval.stmt = (PLpgSQL_stmt *) new;
						}
						else
						{
							PLpgSQL_stmt_forq		*new;

							Assert(yyvsp[-1].stmt->cmd_type == PLPGSQL_STMT_FORS ||
								   yyvsp[-1].stmt->cmd_type == PLPGSQL_STMT_FORC ||
								   yyvsp[-1].stmt->cmd_type == PLPGSQL_STMT_DYNFORS);
							/* forq is the common supertype of all three */
							new = (PLpgSQL_stmt_forq *) yyvsp[-1].stmt;
							new->lineno   = plpgsql_location_to_lineno(yylsp[-2]);
							new->label	  = yyvsp[-3].str;
							new->body	  = yyvsp[0].loop_body.stmts;
							yyval.stmt = (PLpgSQL_stmt *) new;
						}

						check_labels(yyvsp[-3].str, yyvsp[0].loop_body.end_label, yyvsp[0].loop_body.end_label_location);
						/* close namespace started in opt_block_label */
						plpgsql_ns_pop();
					;}
    break;

  case 100:
#line 1076 "gram.y"
    {
						int			tok = yylex();
						int			tokloc = yylloc;

						if (tok == K_EXECUTE)
						{
							/* EXECUTE means it's a dynamic FOR loop */
							PLpgSQL_stmt_dynfors	*new;
							PLpgSQL_expr			*expr;
							int						term;

							expr = read_sql_expression2(K_LOOP, K_USING,
														"LOOP or USING",
														&term);

							new = palloc0(sizeof(PLpgSQL_stmt_dynfors));
							new->cmd_type = PLPGSQL_STMT_DYNFORS;
							if (yyvsp[-1].forvariable.rec)
							{
								new->rec = yyvsp[-1].forvariable.rec;
								check_assignable((PLpgSQL_datum *) new->rec, yylsp[-1]);
							}
							else if (yyvsp[-1].forvariable.row)
							{
								new->row = yyvsp[-1].forvariable.row;
								check_assignable((PLpgSQL_datum *) new->row, yylsp[-1]);
							}
							else if (yyvsp[-1].forvariable.scalar)
							{
								/* convert single scalar to list */
								new->row = make_scalar_list1(yyvsp[-1].forvariable.name, yyvsp[-1].forvariable.scalar,
															 yyvsp[-1].forvariable.lineno, yylsp[-1]);
								/* no need for check_assignable */
							}
							else
							{
								ereport(ERROR,
										(errcode(ERRCODE_DATATYPE_MISMATCH),
										 errmsg("loop variable of loop over rows must be a record or row variable or list of scalar variables"),
										 parser_errposition(yylsp[-1])));
							}
							new->query = expr;

							if (term == K_USING)
							{
								do
								{
									expr = read_sql_expression2(',', K_LOOP,
																", or LOOP",
																&term);
									new->params = lappend(new->params, expr);
								} while (term == ',');
							}

							yyval.stmt = (PLpgSQL_stmt *) new;
						}
						else if (tok == T_DATUM &&
								 yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_VAR &&
								 ((PLpgSQL_var *) yylval.wdatum.datum)->datatype->typoid == REFCURSOROID)
						{
							/* It's FOR var IN cursor */
							PLpgSQL_stmt_forc	*new;
							PLpgSQL_var			*cursor = (PLpgSQL_var *) yylval.wdatum.datum;

							new = (PLpgSQL_stmt_forc *) palloc0(sizeof(PLpgSQL_stmt_forc));
							new->cmd_type = PLPGSQL_STMT_FORC;
							new->curvar = cursor->dno;

							/* Should have had a single variable name */
							if (yyvsp[-1].forvariable.scalar && yyvsp[-1].forvariable.row)
								ereport(ERROR,
										(errcode(ERRCODE_SYNTAX_ERROR),
										 errmsg("cursor FOR loop must have only one target variable"),
										 parser_errposition(yylsp[-1])));

							/* can't use an unbound cursor this way */
							if (cursor->cursor_explicit_expr == NULL)
								ereport(ERROR,
										(errcode(ERRCODE_SYNTAX_ERROR),
										 errmsg("cursor FOR loop must use a bound cursor variable"),
										 parser_errposition(tokloc)));

							/* collect cursor's parameters if any */
							new->argquery = read_cursor_args(cursor,
															 K_LOOP,
															 "LOOP");

							/* create loop's private RECORD variable */
							new->rec = plpgsql_build_record(yyvsp[-1].forvariable.name,
															yyvsp[-1].forvariable.lineno,
															true);

							yyval.stmt = (PLpgSQL_stmt *) new;
						}
						else
						{
							PLpgSQL_expr	*expr1;
							int				expr1loc;
							bool			reverse = false;

							/*
							 * We have to distinguish between two
							 * alternatives: FOR var IN a .. b and FOR
							 * var IN query. Unfortunately this is
							 * tricky, since the query in the second
							 * form needn't start with a SELECT
							 * keyword.  We use the ugly hack of
							 * looking for two periods after the first
							 * token. We also check for the REVERSE
							 * keyword, which means it must be an
							 * integer loop.
							 */
							if (tok_is_keyword(tok, &yylval,
											   K_REVERSE, "reverse"))
								reverse = true;
							else
								plpgsql_push_back_token(tok);

							/*
							 * Read tokens until we see either a ".."
							 * or a LOOP. The text we read may not
							 * necessarily be a well-formed SQL
							 * statement, so we need to invoke
							 * read_sql_construct directly.
							 */
							expr1 = read_sql_construct(DOT_DOT,
													   K_LOOP,
													   0,
													   "LOOP",
													   "SELECT ",
													   true,
													   false,
													   &expr1loc,
													   &tok);

							if (tok == DOT_DOT)
							{
								/* Saw "..", so it must be an integer loop */
								PLpgSQL_expr		*expr2;
								PLpgSQL_expr		*expr_by;
								PLpgSQL_var			*fvar;
								PLpgSQL_stmt_fori	*new;

								/* Check first expression is well-formed */
								check_sql_expr(expr1->query, expr1loc, 7);

								/* Read and check the second one */
								expr2 = read_sql_expression2(K_LOOP, K_BY,
															 "LOOP",
															 &tok);

								/* Get the BY clause if any */
								if (tok == K_BY)
									expr_by = read_sql_expression(K_LOOP,
																  "LOOP");
								else
									expr_by = NULL;

								/* Should have had a single variable name */
								if (yyvsp[-1].forvariable.scalar && yyvsp[-1].forvariable.row)
									ereport(ERROR,
											(errcode(ERRCODE_SYNTAX_ERROR),
											 errmsg("integer FOR loop must have only one target variable"),
											 parser_errposition(yylsp[-1])));

								/* create loop's private variable */
								fvar = (PLpgSQL_var *)
									plpgsql_build_variable(yyvsp[-1].forvariable.name,
														   yyvsp[-1].forvariable.lineno,
														   plpgsql_build_datatype(INT4OID,
																				  -1),
														   true);

								new = palloc0(sizeof(PLpgSQL_stmt_fori));
								new->cmd_type = PLPGSQL_STMT_FORI;
								new->var	  = fvar;
								new->reverse  = reverse;
								new->lower	  = expr1;
								new->upper	  = expr2;
								new->step	  = expr_by;

								yyval.stmt = (PLpgSQL_stmt *) new;
							}
							else
							{
								/*
								 * No "..", so it must be a query loop. We've
								 * prefixed an extra SELECT to the query text,
								 * so we need to remove that before performing
								 * syntax checking.
								 */
								char				*tmp_query;
								PLpgSQL_stmt_fors	*new;

								if (reverse)
									ereport(ERROR,
											(errcode(ERRCODE_SYNTAX_ERROR),
											 errmsg("cannot specify REVERSE in query FOR loop"),
											 parser_errposition(tokloc)));

								Assert(strncmp(expr1->query, "SELECT ", 7) == 0);
								tmp_query = pstrdup(expr1->query + 7);
								pfree(expr1->query);
								expr1->query = tmp_query;

								check_sql_expr(expr1->query, expr1loc, 0);

								new = palloc0(sizeof(PLpgSQL_stmt_fors));
								new->cmd_type = PLPGSQL_STMT_FORS;
								if (yyvsp[-1].forvariable.rec)
								{
									new->rec = yyvsp[-1].forvariable.rec;
									check_assignable((PLpgSQL_datum *) new->rec, yylsp[-1]);
								}
								else if (yyvsp[-1].forvariable.row)
								{
									new->row = yyvsp[-1].forvariable.row;
									check_assignable((PLpgSQL_datum *) new->row, yylsp[-1]);
								}
								else if (yyvsp[-1].forvariable.scalar)
								{
									/* convert single scalar to list */
									new->row = make_scalar_list1(yyvsp[-1].forvariable.name, yyvsp[-1].forvariable.scalar,
																 yyvsp[-1].forvariable.lineno, yylsp[-1]);
									/* no need for check_assignable */
								}
								else
								{
									ereport(ERROR,
											(errcode(ERRCODE_SYNTAX_ERROR),
											 errmsg("loop variable of loop over rows must be a record or row variable or list of scalar variables"),
											 parser_errposition(yylsp[-1])));
								}

								new->query = expr1;
								yyval.stmt = (PLpgSQL_stmt *) new;
							}
						}
					;}
    break;

  case 101:
#line 1336 "gram.y"
    {
						yyval.forvariable.name = NameOfDatum(&(yyvsp[0].wdatum));
						yyval.forvariable.lineno = plpgsql_location_to_lineno(yylsp[0]);
						if (yyvsp[0].wdatum.datum->dtype == PLPGSQL_DTYPE_ROW)
						{
							yyval.forvariable.scalar = NULL;
							yyval.forvariable.rec = NULL;
							yyval.forvariable.row = (PLpgSQL_row *) yyvsp[0].wdatum.datum;
						}
						else if (yyvsp[0].wdatum.datum->dtype == PLPGSQL_DTYPE_REC)
						{
							yyval.forvariable.scalar = NULL;
							yyval.forvariable.rec = (PLpgSQL_rec *) yyvsp[0].wdatum.datum;
							yyval.forvariable.row = NULL;
						}
						else
						{
							int			tok;

							yyval.forvariable.scalar = yyvsp[0].wdatum.datum;
							yyval.forvariable.rec = NULL;
							yyval.forvariable.row = NULL;
							/* check for comma-separated list */
							tok = yylex();
							plpgsql_push_back_token(tok);
							if (tok == ',')
								yyval.forvariable.row = read_into_scalar_list(yyval.forvariable.name,
															   yyval.forvariable.scalar,
															   yylsp[0]);
						}
					;}
    break;

  case 102:
#line 1368 "gram.y"
    {
						int			tok;

						yyval.forvariable.name = yyvsp[0].word.ident;
						yyval.forvariable.lineno = plpgsql_location_to_lineno(yylsp[0]);
						yyval.forvariable.scalar = NULL;
						yyval.forvariable.rec = NULL;
						yyval.forvariable.row = NULL;
						/* check for comma-separated list */
						tok = yylex();
						plpgsql_push_back_token(tok);
						if (tok == ',')
							word_is_not_variable(&(yyvsp[0].word), yylsp[0]);
					;}
    break;

  case 103:
#line 1383 "gram.y"
    {
						/* just to give a better message than "syntax error" */
						cword_is_not_variable(&(yyvsp[0].cword), yylsp[0]);
					;}
    break;

  case 104:
#line 1390 "gram.y"
    {
						PLpgSQL_stmt_exit *new;

						new = palloc0(sizeof(PLpgSQL_stmt_exit));
						new->cmd_type = PLPGSQL_STMT_EXIT;
						new->is_exit  = yyvsp[-2].boolean;
						new->lineno	  = plpgsql_location_to_lineno(yylsp[-2]);
						new->label	  = yyvsp[-1].str;
						new->cond	  = yyvsp[0].expr;

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 105:
#line 1405 "gram.y"
    {
						yyval.boolean = true;
					;}
    break;

  case 106:
#line 1409 "gram.y"
    {
						yyval.boolean = false;
					;}
    break;

  case 107:
#line 1415 "gram.y"
    {
						int	tok;

						tok = yylex();
						if (tok == 0)
							yyerror("unexpected end of function definition");

						if (tok_is_keyword(tok, &yylval,
										   K_NEXT, "next"))
						{
							yyval.stmt = make_return_next_stmt(yylsp[0]);
						}
						else if (tok_is_keyword(tok, &yylval,
												K_QUERY, "query"))
						{
							yyval.stmt = make_return_query_stmt(yylsp[0]);
						}
						else
						{
							plpgsql_push_back_token(tok);
							yyval.stmt = make_return_stmt(yylsp[0]);
						}
					;}
    break;

  case 108:
#line 1441 "gram.y"
    {
						PLpgSQL_stmt_raise		*new;
						int	tok;

						new = palloc(sizeof(PLpgSQL_stmt_raise));

						new->cmd_type	= PLPGSQL_STMT_RAISE;
						new->lineno		= plpgsql_location_to_lineno(yylsp[0]);
						new->elog_level = ERROR;	/* default */
						new->condname	= NULL;
						new->message	= NULL;
						new->params		= NIL;
						new->options	= NIL;

						tok = yylex();
						if (tok == 0)
							yyerror("unexpected end of function definition");

						/*
						 * We could have just RAISE, meaning to re-throw
						 * the current error.
						 */
						if (tok != ';')
						{
							/*
							 * First is an optional elog severity level.
							 */
							if (tok_is_keyword(tok, &yylval,
											   K_EXCEPTION, "exception"))
							{
								new->elog_level = ERROR;
								tok = yylex();
							}
							else if (tok_is_keyword(tok, &yylval,
													K_WARNING, "warning"))
							{
								new->elog_level = WARNING;
								tok = yylex();
							}
							else if (tok_is_keyword(tok, &yylval,
													K_NOTICE, "notice"))
							{
								new->elog_level = NOTICE;
								tok = yylex();
							}
							else if (tok_is_keyword(tok, &yylval,
													K_INFO, "info"))
							{
								new->elog_level = INFO;
								tok = yylex();
							}
							else if (tok_is_keyword(tok, &yylval,
													K_LOG, "log"))
							{
								new->elog_level = LOG;
								tok = yylex();
							}
							else if (tok_is_keyword(tok, &yylval,
													K_DEBUG, "debug"))
							{
								new->elog_level = DEBUG1;
								tok = yylex();
							}
							if (tok == 0)
								yyerror("unexpected end of function definition");

							/*
							 * Next we can have a condition name, or
							 * equivalently SQLSTATE 'xxxxx', or a string
							 * literal that is the old-style message format,
							 * or USING to start the option list immediately.
							 */
							if (tok == SCONST)
							{
								/* old style message and parameters */
								new->message = yylval.str;
								/*
								 * We expect either a semi-colon, which
								 * indicates no parameters, or a comma that
								 * begins the list of parameter expressions,
								 * or USING to begin the options list.
								 */
								tok = yylex();
								if (tok != ',' && tok != ';' && tok != K_USING)
									yyerror("syntax error");

								while (tok == ',')
								{
									PLpgSQL_expr *expr;

									expr = read_sql_construct(',', ';', K_USING,
															  ", or ; or USING",
															  "SELECT ",
															  true, true,
															  NULL, &tok);
									new->params = lappend(new->params, expr);
								}
							}
							else if (tok != K_USING)
							{
								/* must be condition name or SQLSTATE */
								if (tok_is_keyword(tok, &yylval,
												   K_SQLSTATE, "sqlstate"))
								{
									/* next token should be a string literal */
									char   *sqlstatestr;

									if (yylex() != SCONST)
										yyerror("syntax error");
									sqlstatestr = yylval.str;

									if (strlen(sqlstatestr) != 5)
										yyerror("invalid SQLSTATE code");
									if (strspn(sqlstatestr, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ") != 5)
										yyerror("invalid SQLSTATE code");
									new->condname = sqlstatestr;
								}
								else
								{
									if (tok != T_WORD)
										yyerror("syntax error");
									new->condname = yylval.word.ident;
									plpgsql_recognize_err_condition(new->condname,
																	false);
								}
								tok = yylex();
								if (tok != ';' && tok != K_USING)
									yyerror("syntax error");
							}

							if (tok == K_USING)
								new->options = read_raise_options();
						}

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 109:
#line 1580 "gram.y"
    {
						yyval.loop_body.stmts = yyvsp[-4].list;
						yyval.loop_body.end_label = yyvsp[-1].str;
						yyval.loop_body.end_label_location = yylsp[-1];
					;}
    break;

  case 110:
#line 1598 "gram.y"
    {
						yyval.stmt = make_execsql_stmt(K_INSERT, yylsp[0]);
					;}
    break;

  case 111:
#line 1602 "gram.y"
    {
						int			tok;

						tok = yylex();
						plpgsql_push_back_token(tok);
						if (tok == '=' || tok == COLON_EQUALS || tok == '[')
							word_is_not_variable(&(yyvsp[0].word), yylsp[0]);
						yyval.stmt = make_execsql_stmt(T_WORD, yylsp[0]);
					;}
    break;

  case 112:
#line 1612 "gram.y"
    {
						int			tok;

						tok = yylex();
						plpgsql_push_back_token(tok);
						if (tok == '=' || tok == COLON_EQUALS || tok == '[')
							cword_is_not_variable(&(yyvsp[0].cword), yylsp[0]);
						yyval.stmt = make_execsql_stmt(T_CWORD, yylsp[0]);
					;}
    break;

  case 113:
#line 1624 "gram.y"
    {
						PLpgSQL_stmt_dynexecute *new;
						PLpgSQL_expr *expr;
						int endtoken;

						expr = read_sql_construct(K_INTO, K_USING, ';',
												  "INTO or USING or ;",
												  "SELECT ",
												  true, true,
												  NULL, &endtoken);

						new = palloc(sizeof(PLpgSQL_stmt_dynexecute));
						new->cmd_type = PLPGSQL_STMT_DYNEXECUTE;
						new->lineno = plpgsql_location_to_lineno(yylsp[0]);
						new->query = expr;
						new->into = false;
						new->strict = false;
						new->rec = NULL;
						new->row = NULL;
						new->params = NIL;

						/*
						 * We loop to allow the INTO and USING clauses to
						 * appear in either order, since people easily get
						 * that wrong.  This coding also prevents "INTO foo"
						 * from getting absorbed into a USING expression,
						 * which is *really* confusing.
						 */
						for (;;)
						{
							if (endtoken == K_INTO)
							{
								if (new->into)			/* multiple INTO */
									yyerror("syntax error");
								new->into = true;
								read_into_target(&new->rec, &new->row, &new->strict);
								endtoken = yylex();
							}
							else if (endtoken == K_USING)
							{
								if (new->params)		/* multiple USING */
									yyerror("syntax error");
								do
								{
									expr = read_sql_construct(',', ';', K_INTO,
															  ", or ; or INTO",
															  "SELECT ",
															  true, true,
															  NULL, &endtoken);
									new->params = lappend(new->params, expr);
								} while (endtoken == ',');
							}
							else if (endtoken == ';')
								break;
							else
								yyerror("syntax error");
						}

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 114:
#line 1688 "gram.y"
    {
						PLpgSQL_stmt_open *new;
						int				  tok;

						new = palloc0(sizeof(PLpgSQL_stmt_open));
						new->cmd_type = PLPGSQL_STMT_OPEN;
						new->lineno = plpgsql_location_to_lineno(yylsp[-1]);
						new->curvar = yyvsp[0].var->dno;
						new->cursor_options = CURSOR_OPT_FAST_PLAN;

						if (yyvsp[0].var->cursor_explicit_expr == NULL)
						{
							/* be nice if we could use opt_scrollable here */
						    tok = yylex();
							if (tok_is_keyword(tok, &yylval,
											   K_NO, "no"))
							{
								tok = yylex();
								if (tok_is_keyword(tok, &yylval,
												   K_SCROLL, "scroll"))
								{
									new->cursor_options |= CURSOR_OPT_NO_SCROLL;
									tok = yylex();
								}
							}
							else if (tok_is_keyword(tok, &yylval,
													K_SCROLL, "scroll"))
							{
								new->cursor_options |= CURSOR_OPT_SCROLL;
								tok = yylex();
							}

							if (tok != K_FOR)
								yyerror("syntax error, expected \"FOR\"");

							tok = yylex();
							if (tok == K_EXECUTE)
							{
								int		endtoken;

								new->dynquery =
									read_sql_expression2(K_USING, ';',
														 "USING or ;",
														 &endtoken);

								/* If we found "USING", collect argument(s) */
								if (endtoken == K_USING)
								{
									PLpgSQL_expr *expr;
									
									do
									{
										expr = read_sql_expression2(',', ';',
																	", or ;",
																	&endtoken);
										new->params = lappend(new->params,
															  expr);
									} while (endtoken == ',');
								}
							}
							else
							{
								plpgsql_push_back_token(tok);
								new->query = read_sql_stmt("");
							}
						}
						else
						{
							/* predefined cursor query, so read args */
							new->argquery = read_cursor_args(yyvsp[0].var, ';', ";");
						}

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 115:
#line 1765 "gram.y"
    {
						PLpgSQL_stmt_fetch *fetch = yyvsp[-2].fetch;
						PLpgSQL_rec	   *rec;
						PLpgSQL_row	   *row;

						/* We have already parsed everything through the INTO keyword */
						read_into_target(&rec, &row, NULL);

						if (yylex() != ';')
							yyerror("syntax error");

						/*
						 * We don't allow multiple rows in PL/pgSQL's FETCH
						 * statement, only in MOVE.
						 */
						if (fetch->returns_multiple_rows)
							ereport(ERROR,
									(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
									 errmsg("FETCH statement cannot return multiple rows"),
									 parser_errposition(yylsp[-3])));

						fetch->lineno = plpgsql_location_to_lineno(yylsp[-3]);
						fetch->rec		= rec;
						fetch->row		= row;
						fetch->curvar	= yyvsp[-1].var->dno;
						fetch->is_move	= false;

						yyval.stmt = (PLpgSQL_stmt *)fetch;
					;}
    break;

  case 116:
#line 1797 "gram.y"
    {
						PLpgSQL_stmt_fetch *fetch = yyvsp[-2].fetch;

						fetch->lineno = plpgsql_location_to_lineno(yylsp[-3]);
						fetch->curvar	= yyvsp[-1].var->dno;
						fetch->is_move	= true;

						yyval.stmt = (PLpgSQL_stmt *)fetch;
					;}
    break;

  case 117:
#line 1809 "gram.y"
    {
						yyval.fetch = read_fetch_direction();
					;}
    break;

  case 118:
#line 1815 "gram.y"
    {
						PLpgSQL_stmt_close *new;

						new = palloc(sizeof(PLpgSQL_stmt_close));
						new->cmd_type = PLPGSQL_STMT_CLOSE;
						new->lineno = plpgsql_location_to_lineno(yylsp[-2]);
						new->curvar = yyvsp[-1].var->dno;

						yyval.stmt = (PLpgSQL_stmt *)new;
					;}
    break;

  case 119:
#line 1828 "gram.y"
    {
						/* We do not bother building a node for NULL */
						yyval.stmt = NULL;
					;}
    break;

  case 120:
#line 1835 "gram.y"
    {
						if (yyvsp[0].wdatum.datum->dtype != PLPGSQL_DTYPE_VAR)
							ereport(ERROR,
									(errcode(ERRCODE_DATATYPE_MISMATCH),
									 errmsg("cursor variable must be a simple variable"),
									 parser_errposition(yylsp[0])));

						if (((PLpgSQL_var *) yyvsp[0].wdatum.datum)->datatype->typoid != REFCURSOROID)
							ereport(ERROR,
									(errcode(ERRCODE_DATATYPE_MISMATCH),
									 errmsg("variable \"%s\" must be of type cursor or refcursor",
											((PLpgSQL_var *) yyvsp[0].wdatum.datum)->refname),
									 parser_errposition(yylsp[0])));
						yyval.var = (PLpgSQL_var *) yyvsp[0].wdatum.datum;
					;}
    break;

  case 121:
#line 1851 "gram.y"
    {
						/* just to give a better message than "syntax error" */
						word_is_not_variable(&(yyvsp[0].word), yylsp[0]);
					;}
    break;

  case 122:
#line 1856 "gram.y"
    {
						/* just to give a better message than "syntax error" */
						cword_is_not_variable(&(yyvsp[0].cword), yylsp[0]);
					;}
    break;

  case 123:
#line 1863 "gram.y"
    { yyval.exception_block = NULL; ;}
    break;

  case 124:
#line 1865 "gram.y"
    {
						/*
						 * We use a mid-rule action to add these
						 * special variables to the namespace before
						 * parsing the WHEN clauses themselves.  The
						 * scope of the names extends to the end of the
						 * current block.
						 */
						int			lineno = plpgsql_location_to_lineno(yylsp[0]);
						PLpgSQL_exception_block *new = palloc(sizeof(PLpgSQL_exception_block));
						PLpgSQL_variable *var;

						var = plpgsql_build_variable("sqlstate", lineno,
													 plpgsql_build_datatype(TEXTOID, -1),
													 true);
						((PLpgSQL_var *) var)->isconst = true;
						new->sqlstate_varno = var->dno;

						var = plpgsql_build_variable("sqlerrm", lineno,
													 plpgsql_build_datatype(TEXTOID, -1),
													 true);
						((PLpgSQL_var *) var)->isconst = true;
						new->sqlerrm_varno = var->dno;

						yyval.exception_block = new;
					;}
    break;

  case 125:
#line 1892 "gram.y"
    {
						PLpgSQL_exception_block *new = yyvsp[-1].exception_block;
						new->exc_list = yyvsp[0].list;

						yyval.exception_block = new;
					;}
    break;

  case 126:
#line 1901 "gram.y"
    {
							yyval.list = lappend(yyvsp[-1].list, yyvsp[0].exception);
						;}
    break;

  case 127:
#line 1905 "gram.y"
    {
							yyval.list = list_make1(yyvsp[0].exception);
						;}
    break;

  case 128:
#line 1911 "gram.y"
    {
						PLpgSQL_exception *new;

						new = palloc0(sizeof(PLpgSQL_exception));
						new->lineno     = plpgsql_location_to_lineno(yylsp[-3]);
						new->conditions = yyvsp[-2].condition;
						new->action	    = yyvsp[0].list;

						yyval.exception = new;
					;}
    break;

  case 129:
#line 1924 "gram.y"
    {
							PLpgSQL_condition	*old;

							for (old = yyvsp[-2].condition; old->next != NULL; old = old->next)
								/* skip */ ;
							old->next = yyvsp[0].condition;
							yyval.condition = yyvsp[-2].condition;
						;}
    break;

  case 130:
#line 1933 "gram.y"
    {
							yyval.condition = yyvsp[0].condition;
						;}
    break;

  case 131:
#line 1939 "gram.y"
    {
							if (strcmp(yyvsp[0].str, "sqlstate") != 0)
							{
								yyval.condition = plpgsql_parse_err_condition(yyvsp[0].str);
							}
							else
							{
								PLpgSQL_condition *new;
								char   *sqlstatestr;

								/* next token should be a string literal */
								if (yylex() != SCONST)
									yyerror("syntax error");
								sqlstatestr = yylval.str;

								if (strlen(sqlstatestr) != 5)
									yyerror("invalid SQLSTATE code");
								if (strspn(sqlstatestr, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ") != 5)
									yyerror("invalid SQLSTATE code");

								new = palloc(sizeof(PLpgSQL_condition));
								new->sqlerrstate =
									MAKE_SQLSTATE(sqlstatestr[0],
												  sqlstatestr[1],
												  sqlstatestr[2],
												  sqlstatestr[3],
												  sqlstatestr[4]);
								new->condname = sqlstatestr;
								new->next = NULL;

								yyval.condition = new;
							}
						;}
    break;

  case 132:
#line 1975 "gram.y"
    { yyval.expr = read_sql_expression(';', ";"); ;}
    break;

  case 133:
#line 1979 "gram.y"
    { yyval.expr = read_sql_expression(']', "]"); ;}
    break;

  case 134:
#line 1983 "gram.y"
    { yyval.expr = read_sql_expression(K_THEN, "THEN"); ;}
    break;

  case 135:
#line 1987 "gram.y"
    { yyval.expr = read_sql_expression(K_LOOP, "LOOP"); ;}
    break;

  case 136:
#line 1991 "gram.y"
    {
						plpgsql_ns_push(NULL);
						yyval.str = NULL;
					;}
    break;

  case 137:
#line 1996 "gram.y"
    {
						plpgsql_ns_push(yyvsp[-1].str);
						yyval.str = yyvsp[-1].str;
					;}
    break;

  case 138:
#line 2003 "gram.y"
    {
						yyval.str = NULL;
					;}
    break;

  case 139:
#line 2007 "gram.y"
    {
						if (plpgsql_ns_lookup_label(plpgsql_ns_top(), yyvsp[0].str) == NULL)
							yyerror("label does not exist");
						yyval.str = yyvsp[0].str;
					;}
    break;

  case 140:
#line 2015 "gram.y"
    { yyval.expr = NULL; ;}
    break;

  case 141:
#line 2017 "gram.y"
    { yyval.expr = yyvsp[0].expr; ;}
    break;

  case 142:
#line 2024 "gram.y"
    {
						yyval.str = yyvsp[0].word.ident;
					;}
    break;

  case 143:
#line 2028 "gram.y"
    {
						if (yyvsp[0].wdatum.ident == NULL) /* composite name not OK */
							yyerror("syntax error");
						yyval.str = yyvsp[0].wdatum.ident;
					;}
    break;


    }

/* Line 991 of yacc.c.  */
#line 3579 "pl_gram.c"

  yyvsp -= yylen;
  yyssp -= yylen;
  yylsp -= yylen;

  YY_STACK_PRINT (yyss, yyssp);

  *++yyvsp = yyval;
  *++yylsp = yyloc;

  /* Now `shift' the result of the reduction.  Determine what state
     that goes to, based on the state we popped back to and the rule
     number reduced by.  */

  yyn = yyr1[yyn];

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

  goto yynewstate;


/*------------------------------------.
| yyerrlab -- here on detecting error |
`------------------------------------*/
yyerrlab:
  /* If not already recovering from an error, report this error.  */
  if (!yyerrstatus)
    {
      ++yynerrs;
#if YYERROR_VERBOSE
      yyn = yypact[yystate];

      if (YYPACT_NINF < yyn && yyn < YYLAST)
	{
	  YYSIZE_T yysize = 0;
	  int yytype = YYTRANSLATE (yychar);
	  char *yymsg;
	  int yyx, yycount;

	  yycount = 0;
	  /* Start YYX at -YYN if negative to avoid negative indexes in
	     YYCHECK.  */
	  for (yyx = yyn < 0 ? -yyn : 0;
	       yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
	    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
	      yysize += yystrlen (yytname[yyx]) + 15, yycount++;
	  yysize += yystrlen ("syntax error, unexpected ") + 1;
	  yysize += yystrlen (yytname[yytype]);
	  yymsg = (char *) YYSTACK_ALLOC (yysize);
	  if (yymsg != 0)
	    {
	      char *yyp = yystpcpy (yymsg, "syntax error, unexpected ");
	      yyp = yystpcpy (yyp, yytname[yytype]);

	      if (yycount < 5)
		{
		  yycount = 0;
		  for (yyx = yyn < 0 ? -yyn : 0;
		       yyx < (int) (sizeof (yytname) / sizeof (char *));
		       yyx++)
		    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
		      {
			const char *yyq = ! yycount ? ", expecting " : " or ";
			yyp = yystpcpy (yyp, yyq);
			yyp = yystpcpy (yyp, yytname[yyx]);
			yycount++;
		      }
		}
	      yyerror (yymsg);
	      YYSTACK_FREE (yymsg);
	    }
	  else
	    yyerror ("syntax error; also virtual memory exhausted");
	}
      else
#endif /* YYERROR_VERBOSE */
	yyerror ("syntax error");
    }

  yylerrsp = yylsp;

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

      /* Return failure if at end of input.  */
      if (yychar == YYEOF)
        {
	  /* Pop the error token.  */
          YYPOPSTACK;
	  /* Pop the rest of the stack.  */
	  while (yyss < yyssp)
	    {
	      YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
	      yydestruct (yystos[*yyssp], yyvsp, yylsp);
	      YYPOPSTACK;
	    }
	  YYABORT;
        }

      YYDSYMPRINTF ("Error: discarding", yytoken, &yylval, &yylloc);
      yydestruct (yytoken, &yylval, &yylloc);
      yychar = YYEMPTY;
      *++yylerrsp = yylloc;
    }

  /* Else will try to reuse lookahead token after shifting the error
     token.  */
  goto yyerrlab2;


/*----------------------------------------------------.
| yyerrlab1 -- error raised explicitly by an action.  |
`----------------------------------------------------*/
yyerrlab1:

  /* Suppress GCC warning that yyerrlab1 is unused when no action
     invokes YYERROR.  */
#if defined (__GNUC_MINOR__) && 2093 <= (__GNUC__ * 1000 + __GNUC_MINOR__)
  __attribute__ ((__unused__))
#endif

  yylerrsp = yylsp;
  *++yylerrsp = yyloc;
  goto yyerrlab2;


/*---------------------------------------------------------------.
| yyerrlab2 -- pop states until the error token can be shifted.  |
`---------------------------------------------------------------*/
yyerrlab2:
  yyerrstatus = 3;	/* Each real token shifted decrements this.  */

  for (;;)
    {
      yyn = yypact[yystate];
      if (yyn != YYPACT_NINF)
	{
	  yyn += YYTERROR;
	  if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
	    {
	      yyn = yytable[yyn];
	      if (0 < yyn)
		break;
	    }
	}

      /* Pop the current state because it cannot handle the error token.  */
      if (yyssp == yyss)
	YYABORT;

      YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp, yylsp);
      yydestruct (yystos[yystate], yyvsp, yylsp);
      yyvsp--;
      yystate = *--yyssp;
      yylsp--;
      YY_STACK_PRINT (yyss, yyssp);
    }

  if (yyn == YYFINAL)
    YYACCEPT;

  YYDPRINTF ((stderr, "Shifting error token, "));

  *++yyvsp = yylval;
  YYLLOC_DEFAULT (yyloc, yylsp, (yylerrsp - yylsp));
  *++yylsp = yyloc;

  yystate = yyn;
  goto yynewstate;


/*-------------------------------------.
| yyacceptlab -- YYACCEPT comes here.  |
`-------------------------------------*/
yyacceptlab:
  yyresult = 0;
  goto yyreturn;

/*-----------------------------------.
| yyabortlab -- YYABORT comes here.  |
`-----------------------------------*/
yyabortlab:
  yyresult = 1;
  goto yyreturn;

#ifndef yyoverflow
/*----------------------------------------------.
| yyoverflowlab -- parser overflow comes here.  |
`----------------------------------------------*/
yyoverflowlab:
  yyerror ("parser stack overflow");
  yyresult = 2;
  /* Fall through.  */
#endif

yyreturn:
#ifndef yyoverflow
  if (yyss != yyssa)
    YYSTACK_FREE (yyss);
#endif
  return yyresult;
}


#line 2074 "gram.y"


/*
 * Check whether a token represents an "unreserved keyword".
 * We have various places where we want to recognize a keyword in preference
 * to a variable name, but not reserve that keyword in other contexts.
 * Hence, this kluge.
 */
static bool
tok_is_keyword(int token, union YYSTYPE *lval,
			   int kw_token, const char *kw_str)
{
	if (token == kw_token)
	{
		/* Normal case, was recognized by scanner (no conflicting variable) */
		return true;
	}
	else if (token == T_DATUM)
	{
		/*
		 * It's a variable, so recheck the string name.  Note we will not
		 * match composite names (hence an unreserved word followed by "."
		 * will not be recognized).
		 */
		if (!lval->wdatum.quoted && lval->wdatum.ident != NULL &&
			strcmp(lval->wdatum.ident, kw_str) == 0)
			return true;
	}
	return false;				/* not the keyword */
}

/*
 * Convenience routine to complain when we expected T_DATUM and got T_WORD,
 * ie, unrecognized variable.
 */
static void
word_is_not_variable(PLword *word, int location)
{
	ereport(ERROR,
			(errcode(ERRCODE_SYNTAX_ERROR),
			 errmsg("\"%s\" is not a known variable",
					word->ident),
			 parser_errposition(location)));
}

/* Same, for a CWORD */
static void
cword_is_not_variable(PLcword *cword, int location)
{
	ereport(ERROR,
			(errcode(ERRCODE_SYNTAX_ERROR),
			 errmsg("\"%s\" is not a known variable",
					NameListToString(cword->idents)),
			 parser_errposition(location)));
}

/*
 * Convenience routine to complain when we expected T_DATUM and got
 * something else.  "tok" must be the current token, since we also
 * look at yylval and yylloc.
 */
static void
current_token_is_not_variable(int tok)
{
	if (tok == T_WORD)
		word_is_not_variable(&(yylval.word), yylloc);
	else if (tok == T_CWORD)
		cword_is_not_variable(&(yylval.cword), yylloc);
	else
		yyerror("syntax error");
}

/* Convenience routine to read an expression with one possible terminator */
static PLpgSQL_expr *
read_sql_expression(int until, const char *expected)
{
	return read_sql_construct(until, 0, 0, expected,
							  "SELECT ", true, true, NULL, NULL);
}

/* Convenience routine to read an expression with two possible terminators */
static PLpgSQL_expr *
read_sql_expression2(int until, int until2, const char *expected,
					 int *endtoken)
{
	return read_sql_construct(until, until2, 0, expected,
							  "SELECT ", true, true, NULL, endtoken);
}

/* Convenience routine to read a SQL statement that must end with ';' */
static PLpgSQL_expr *
read_sql_stmt(const char *sqlstart)
{
	return read_sql_construct(';', 0, 0, ";",
							  sqlstart, false, true, NULL, NULL);
}

/*
 * Read a SQL construct and build a PLpgSQL_expr for it.
 *
 * until:		token code for expected terminator
 * until2:		token code for alternate terminator (pass 0 if none)
 * until3:		token code for another alternate terminator (pass 0 if none)
 * expected:	text to use in complaining that terminator was not found
 * sqlstart:	text to prefix to the accumulated SQL text
 * isexpression: whether to say we're reading an "expression" or a "statement"
 * valid_sql:   whether to check the syntax of the expr (prefixed with sqlstart)
 * startloc:	if not NULL, location of first token is stored at *startloc
 * endtoken:	if not NULL, ending token is stored at *endtoken
 *				(this is only interesting if until2 or until3 isn't zero)
 */
static PLpgSQL_expr *
read_sql_construct(int until,
				   int until2,
				   int until3,
				   const char *expected,
				   const char *sqlstart,
				   bool isexpression,
				   bool valid_sql,
				   int *startloc,
				   int *endtoken)
{
	int					tok;
	StringInfoData		ds;
	IdentifierLookup	save_IdentifierLookup;
	int					startlocation = -1;
	int					parenlevel = 0;
	PLpgSQL_expr		*expr;

	initStringInfo(&ds);
	appendStringInfoString(&ds, sqlstart);

	/* special lookup mode for identifiers within the SQL text */
	save_IdentifierLookup = plpgsql_IdentifierLookup;
	plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_EXPR;

	for (;;)
	{
		tok = yylex();
		if (startlocation < 0)			/* remember loc of first token */
			startlocation = yylloc;
		if (tok == until && parenlevel == 0)
			break;
		if (tok == until2 && parenlevel == 0)
			break;
		if (tok == until3 && parenlevel == 0)
			break;
		if (tok == '(' || tok == '[')
			parenlevel++;
		else if (tok == ')' || tok == ']')
		{
			parenlevel--;
			if (parenlevel < 0)
				yyerror("mismatched parentheses");
		}
		/*
		 * End of function definition is an error, and we don't expect to
		 * hit a semicolon either (unless it's the until symbol, in which
		 * case we should have fallen out above).
		 */
		if (tok == 0 || tok == ';')
		{
			if (parenlevel != 0)
				yyerror("mismatched parentheses");
			if (isexpression)
				ereport(ERROR,
						(errcode(ERRCODE_SYNTAX_ERROR),
						 errmsg("missing \"%s\" at end of SQL expression",
								expected),
						 parser_errposition(yylloc)));
			else
				ereport(ERROR,
						(errcode(ERRCODE_SYNTAX_ERROR),
						 errmsg("missing \"%s\" at end of SQL statement",
								expected),
						 parser_errposition(yylloc)));
		}
	}

	plpgsql_IdentifierLookup = save_IdentifierLookup;

	if (startloc)
		*startloc = startlocation;
	if (endtoken)
		*endtoken = tok;

	/* give helpful complaint about empty input */
	if (startlocation >= yylloc)
	{
		if (isexpression)
			yyerror("missing expression");
		else
			yyerror("missing SQL statement");
	}

	plpgsql_append_source_text(&ds, startlocation, yylloc);

	/* trim any trailing whitespace, for neatness */
	while (ds.len > 0 && scanner_isspace(ds.data[ds.len - 1]))
		ds.data[--ds.len] = '\0';

	expr = palloc0(sizeof(PLpgSQL_expr));
	expr->dtype			= PLPGSQL_DTYPE_EXPR;
	expr->query			= pstrdup(ds.data);
	expr->plan			= NULL;
	expr->paramnos		= NULL;
	expr->ns            = plpgsql_ns_top();
	pfree(ds.data);

	if (valid_sql)
		check_sql_expr(expr->query, startlocation, strlen(sqlstart));

	return expr;
}

static PLpgSQL_type *
read_datatype(int tok)
{
	StringInfoData		ds;
	char			   *type_name;
	int					startlocation;
	PLpgSQL_type		*result;
	int					parenlevel = 0;

	/* Should only be called while parsing DECLARE sections */
	Assert(plpgsql_IdentifierLookup == IDENTIFIER_LOOKUP_DECLARE);

	/* Often there will be a lookahead token, but if not, get one */
	if (tok == YYEMPTY)
		tok = yylex();

	startlocation = yylloc;

	/*
	 * If we have a simple or composite identifier, check for %TYPE
	 * and %ROWTYPE constructs.
	 */
	if (tok == T_WORD)
	{
		char   *dtname = yylval.word.ident;

		tok = yylex();
		if (tok == '%')
		{
			tok = yylex();
			if (tok_is_keyword(tok, &yylval,
							   K_TYPE, "type"))
			{
				result = plpgsql_parse_wordtype(dtname);
				if (result)
					return result;
			}
			else if (tok_is_keyword(tok, &yylval,
									K_ROWTYPE, "rowtype"))
			{
				result = plpgsql_parse_wordrowtype(dtname);
				if (result)
					return result;
			}
		}
	}
	else if (tok == T_CWORD)
	{
		List   *dtnames = yylval.cword.idents;

		tok = yylex();
		if (tok == '%')
		{
			tok = yylex();
			if (tok_is_keyword(tok, &yylval,
							   K_TYPE, "type"))
			{
				result = plpgsql_parse_cwordtype(dtnames);
				if (result)
					return result;
			}
			else if (tok_is_keyword(tok, &yylval,
									K_ROWTYPE, "rowtype"))
			{
				result = plpgsql_parse_cwordrowtype(dtnames);
				if (result)
					return result;
			}
		}
	}

	while (tok != ';')
	{
		if (tok == 0)
		{
			if (parenlevel != 0)
				yyerror("mismatched parentheses");
			else
				yyerror("incomplete data type declaration");
		}
		/* Possible followers for datatype in a declaration */
		if (tok == K_NOT || tok == '=' || tok == COLON_EQUALS || tok == K_DEFAULT)
			break;
		/* Possible followers for datatype in a cursor_arg list */
		if ((tok == ',' || tok == ')') && parenlevel == 0)
			break;
		if (tok == '(')
			parenlevel++;
		else if (tok == ')')
			parenlevel--;

		tok = yylex();
	}

	/* set up ds to contain complete typename text */
	initStringInfo(&ds);
	plpgsql_append_source_text(&ds, startlocation, yylloc);
	type_name = ds.data;

	if (type_name[0] == '\0')
		yyerror("missing data type declaration");

	result = parse_datatype(type_name, startlocation);

	pfree(ds.data);

	plpgsql_push_back_token(tok);

	return result;
}

static PLpgSQL_stmt *
make_execsql_stmt(int firsttoken, int location)
{
	StringInfoData		ds;
	IdentifierLookup	save_IdentifierLookup;
	PLpgSQL_stmt_execsql *execsql;
	PLpgSQL_expr		*expr;
	PLpgSQL_row			*row = NULL;
	PLpgSQL_rec			*rec = NULL;
	int					tok;
	int					prev_tok;
	bool				have_into = false;
	bool				have_strict = false;
	int					into_start_loc = -1;
	int					into_end_loc = -1;

	initStringInfo(&ds);

	/* special lookup mode for identifiers within the SQL text */
	save_IdentifierLookup = plpgsql_IdentifierLookup;
	plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_EXPR;

	/*
	 * We have to special-case the sequence INSERT INTO, because we don't want
	 * that to be taken as an INTO-variables clause.  Fortunately, this is the
	 * only valid use of INTO in a pl/pgsql SQL command, and INTO is already a
	 * fully reserved word in the main grammar.  We have to treat it that way
	 * anywhere in the string, not only at the start; consider CREATE RULE
	 * containing an INSERT statement.
	 */
	tok = firsttoken;
	for (;;)
	{
		prev_tok = tok;
		tok = yylex();
		if (have_into && into_end_loc < 0)
			into_end_loc = yylloc;		/* token after the INTO part */
		if (tok == ';')
			break;
		if (tok == 0)
			yyerror("unexpected end of function definition");

		if (tok == K_INTO && prev_tok != K_INSERT)
		{
			if (have_into)
				yyerror("INTO specified more than once");
			have_into = true;
			into_start_loc = yylloc;
			plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_NORMAL;
			read_into_target(&rec, &row, &have_strict);
			plpgsql_IdentifierLookup = IDENTIFIER_LOOKUP_EXPR;
		}
	}

	plpgsql_IdentifierLookup = save_IdentifierLookup;

	if (have_into)
	{
		/*
		 * Insert an appropriate number of spaces corresponding to the
		 * INTO text, so that locations within the redacted SQL statement
		 * still line up with those in the original source text.
		 */
		plpgsql_append_source_text(&ds, location, into_start_loc);
		appendStringInfoSpaces(&ds, into_end_loc - into_start_loc);
		plpgsql_append_source_text(&ds, into_end_loc, yylloc);
	}
	else
		plpgsql_append_source_text(&ds, location, yylloc);

	/* trim any trailing whitespace, for neatness */
	while (ds.len > 0 && scanner_isspace(ds.data[ds.len - 1]))
		ds.data[--ds.len] = '\0';

	expr = palloc0(sizeof(PLpgSQL_expr));
	expr->dtype			= PLPGSQL_DTYPE_EXPR;
	expr->query			= pstrdup(ds.data);
	expr->plan			= NULL;
	expr->paramnos		= NULL;
	expr->ns            = plpgsql_ns_top();
	pfree(ds.data);

	check_sql_expr(expr->query, location, 0);

	execsql = palloc(sizeof(PLpgSQL_stmt_execsql));
	execsql->cmd_type = PLPGSQL_STMT_EXECSQL;
	execsql->lineno  = plpgsql_location_to_lineno(location);
	execsql->sqlstmt = expr;
	execsql->into	 = have_into;
	execsql->strict	 = have_strict;
	execsql->rec	 = rec;
	execsql->row	 = row;

	return (PLpgSQL_stmt *) execsql;
}


/*
 * Read FETCH or MOVE direction clause (everything through FROM/IN).
 */
static PLpgSQL_stmt_fetch *
read_fetch_direction(void)
{
	PLpgSQL_stmt_fetch *fetch;
	int			tok;
	bool		check_FROM = true;

	/*
	 * We create the PLpgSQL_stmt_fetch struct here, but only fill in
	 * the fields arising from the optional direction clause
	 */
	fetch = (PLpgSQL_stmt_fetch *) palloc0(sizeof(PLpgSQL_stmt_fetch));
	fetch->cmd_type = PLPGSQL_STMT_FETCH;
	/* set direction defaults: */
	fetch->direction = FETCH_FORWARD;
	fetch->how_many  = 1;
	fetch->expr      = NULL;
	fetch->returns_multiple_rows = false;

	tok = yylex();
	if (tok == 0)
		yyerror("unexpected end of function definition");

	if (tok_is_keyword(tok, &yylval,
					   K_NEXT, "next"))
	{
		/* use defaults */
	}
	else if (tok_is_keyword(tok, &yylval,
							K_PRIOR, "prior"))
	{
		fetch->direction = FETCH_BACKWARD;
	}
	else if (tok_is_keyword(tok, &yylval,
							K_FIRST, "first"))
	{
		fetch->direction = FETCH_ABSOLUTE;
	}
	else if (tok_is_keyword(tok, &yylval,
							K_LAST, "last"))
	{
		fetch->direction = FETCH_ABSOLUTE;
		fetch->how_many  = -1;
	}
	else if (tok_is_keyword(tok, &yylval,
							K_ABSOLUTE, "absolute"))
	{
		fetch->direction = FETCH_ABSOLUTE;
		fetch->expr = read_sql_expression2(K_FROM, K_IN,
										   "FROM or IN",
										   NULL);
		check_FROM = false;
	}
	else if (tok_is_keyword(tok, &yylval,
							K_RELATIVE, "relative"))
	{
		fetch->direction = FETCH_RELATIVE;
		fetch->expr = read_sql_expression2(K_FROM, K_IN,
										   "FROM or IN",
										   NULL);
		check_FROM = false;
	}
	else if (tok_is_keyword(tok, &yylval,
							K_ALL, "all"))
	{
		fetch->how_many = FETCH_ALL;
		fetch->returns_multiple_rows = true;
	}
	else if (tok_is_keyword(tok, &yylval,
							K_FORWARD, "forward"))
	{
		complete_direction(fetch, &check_FROM);
	}
	else if (tok_is_keyword(tok, &yylval,
							K_BACKWARD, "backward"))
	{
		fetch->direction = FETCH_BACKWARD;
		complete_direction(fetch, &check_FROM);
	}
	else if (tok == K_FROM || tok == K_IN)
	{
		/* empty direction */
		check_FROM = false;
	}
	else if (tok == T_DATUM)
	{
		/* Assume there's no direction clause and tok is a cursor name */
		plpgsql_push_back_token(tok);
		check_FROM = false;
	}
	else
	{
		/*
		 * Assume it's a count expression with no preceding keyword.
		 * Note: we allow this syntax because core SQL does, but we don't
		 * document it because of the ambiguity with the omitted-direction
		 * case.  For instance, "MOVE n IN c" will fail if n is a variable.
		 * Perhaps this can be improved someday, but it's hardly worth a
		 * lot of work.
		 */
		plpgsql_push_back_token(tok);
		fetch->expr = read_sql_expression2(K_FROM, K_IN,
										   "FROM or IN",
										   NULL);
		fetch->returns_multiple_rows = true;
		check_FROM = false;
	}

	/* check FROM or IN keyword after direction's specification */
	if (check_FROM)
	{
		tok = yylex();
		if (tok != K_FROM && tok != K_IN)
			yyerror("expected FROM or IN");
	}

	return fetch;
}

/*
 * Process remainder of FETCH/MOVE direction after FORWARD or BACKWARD.
 * Allows these cases:
 *   FORWARD expr,  FORWARD ALL,  FORWARD
 *   BACKWARD expr, BACKWARD ALL, BACKWARD
 */
static void
complete_direction(PLpgSQL_stmt_fetch *fetch,  bool *check_FROM)
{
	int			tok;

	tok = yylex();
	if (tok == 0)
		yyerror("unexpected end of function definition");

	if (tok == K_FROM || tok == K_IN)
	{
		*check_FROM = false;
		return;
	}

	if (tok == K_ALL)
	{
		fetch->how_many = FETCH_ALL;
		fetch->returns_multiple_rows = true;
		*check_FROM = true;
		return;
	}

	plpgsql_push_back_token(tok);
	fetch->expr = read_sql_expression2(K_FROM, K_IN,
									   "FROM or IN",
									   NULL);
	fetch->returns_multiple_rows = true;
	*check_FROM = false;
}


static PLpgSQL_stmt *
make_return_stmt(int location)
{
	PLpgSQL_stmt_return *new;

	new = palloc0(sizeof(PLpgSQL_stmt_return));
	new->cmd_type = PLPGSQL_STMT_RETURN;
	new->lineno   = plpgsql_location_to_lineno(location);
	new->expr	  = NULL;
	new->retvarno = -1;

	if (plpgsql_curr_compile->fn_retset)
	{
		if (yylex() != ';')
			ereport(ERROR,
					(errcode(ERRCODE_DATATYPE_MISMATCH),
					 errmsg("RETURN cannot have a parameter in function returning set"),
					 errhint("Use RETURN NEXT or RETURN QUERY."),
					 parser_errposition(yylloc)));
	}
	else if (plpgsql_curr_compile->out_param_varno >= 0)
	{
		if (yylex() != ';')
			ereport(ERROR,
					(errcode(ERRCODE_DATATYPE_MISMATCH),
					 errmsg("RETURN cannot have a parameter in function with OUT parameters"),
					 parser_errposition(yylloc)));
		new->retvarno = plpgsql_curr_compile->out_param_varno;
	}
	else if (plpgsql_curr_compile->fn_rettype == VOIDOID)
	{
		if (yylex() != ';')
			ereport(ERROR,
					(errcode(ERRCODE_DATATYPE_MISMATCH),
					 errmsg("RETURN cannot have a parameter in function returning void"),
					 parser_errposition(yylloc)));
	}
	else if (plpgsql_curr_compile->fn_retistuple)
	{
		switch (yylex())
		{
			case K_NULL:
				/* we allow this to support RETURN NULL in triggers */
				break;

			case T_DATUM:
				if (yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_ROW ||
					yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_REC)
					new->retvarno = yylval.wdatum.datum->dno;
				else
					ereport(ERROR,
							(errcode(ERRCODE_DATATYPE_MISMATCH),
							 errmsg("RETURN must specify a record or row variable in function returning row"),
							 parser_errposition(yylloc)));
				break;

			default:
				ereport(ERROR,
						(errcode(ERRCODE_DATATYPE_MISMATCH),
						 errmsg("RETURN must specify a record or row variable in function returning row"),
						 parser_errposition(yylloc)));
				break;
		}
		if (yylex() != ';')
			yyerror("syntax error");
	}
	else
	{
		/*
		 * Note that a well-formed expression is _required_ here;
		 * anything else is a compile-time error.
		 */
		new->expr = read_sql_expression(';', ";");
	}

	return (PLpgSQL_stmt *) new;
}


static PLpgSQL_stmt *
make_return_next_stmt(int location)
{
	PLpgSQL_stmt_return_next *new;

	if (!plpgsql_curr_compile->fn_retset)
		ereport(ERROR,
				(errcode(ERRCODE_DATATYPE_MISMATCH),
				 errmsg("cannot use RETURN NEXT in a non-SETOF function"),
				 parser_errposition(location)));

	new = palloc0(sizeof(PLpgSQL_stmt_return_next));
	new->cmd_type	= PLPGSQL_STMT_RETURN_NEXT;
	new->lineno		= plpgsql_location_to_lineno(location);
	new->expr		= NULL;
	new->retvarno	= -1;

	if (plpgsql_curr_compile->out_param_varno >= 0)
	{
		if (yylex() != ';')
			ereport(ERROR,
					(errcode(ERRCODE_DATATYPE_MISMATCH),
					 errmsg("RETURN NEXT cannot have a parameter in function with OUT parameters"),
					 parser_errposition(yylloc)));
		new->retvarno = plpgsql_curr_compile->out_param_varno;
	}
	else if (plpgsql_curr_compile->fn_retistuple)
	{
		switch (yylex())
		{
			case T_DATUM:
				if (yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_ROW ||
					yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_REC)
					new->retvarno = yylval.wdatum.datum->dno;
				else
					ereport(ERROR,
							(errcode(ERRCODE_DATATYPE_MISMATCH),
							 errmsg("RETURN NEXT must specify a record or row variable in function returning row"),
							 parser_errposition(yylloc)));
				break;

			default:
				ereport(ERROR,
						(errcode(ERRCODE_DATATYPE_MISMATCH),
						 errmsg("RETURN NEXT must specify a record or row variable in function returning row"),
						 parser_errposition(yylloc)));
				break;
		}
		if (yylex() != ';')
			yyerror("syntax error");
	}
	else
		new->expr = read_sql_expression(';', ";");

	return (PLpgSQL_stmt *) new;
}


static PLpgSQL_stmt *
make_return_query_stmt(int location)
{
	PLpgSQL_stmt_return_query *new;
	int			tok;

	if (!plpgsql_curr_compile->fn_retset)
		ereport(ERROR,
				(errcode(ERRCODE_DATATYPE_MISMATCH),
				 errmsg("cannot use RETURN QUERY in a non-SETOF function"),
				 parser_errposition(location)));

	new = palloc0(sizeof(PLpgSQL_stmt_return_query));
	new->cmd_type = PLPGSQL_STMT_RETURN_QUERY;
	new->lineno = plpgsql_location_to_lineno(location);

	/* check for RETURN QUERY EXECUTE */
	if ((tok = yylex()) != K_EXECUTE)
	{
		/* ordinary static query */
		plpgsql_push_back_token(tok);
		new->query = read_sql_stmt("");
	}
	else
	{
		/* dynamic SQL */
		int		term;

		new->dynquery = read_sql_expression2(';', K_USING, "; or USING",
											 &term);
		if (term == K_USING)
		{
			do
			{
				PLpgSQL_expr *expr;

				expr = read_sql_expression2(',', ';', ", or ;", &term);
				new->params = lappend(new->params, expr);
			} while (term == ',');
		}
	}

	return (PLpgSQL_stmt *) new;
}


/* convenience routine to fetch the name of a T_DATUM */
static char *
NameOfDatum(PLwdatum *wdatum)
{
	if (wdatum->ident)
		return wdatum->ident;
	Assert(wdatum->idents != NIL);
	return NameListToString(wdatum->idents);
}

static void
check_assignable(PLpgSQL_datum *datum, int location)
{
	switch (datum->dtype)
	{
		case PLPGSQL_DTYPE_VAR:
			if (((PLpgSQL_var *) datum)->isconst)
				ereport(ERROR,
						(errcode(ERRCODE_ERROR_IN_ASSIGNMENT),
						 errmsg("\"%s\" is declared CONSTANT",
								((PLpgSQL_var *) datum)->refname),
						 parser_errposition(location)));
			break;
		case PLPGSQL_DTYPE_ROW:
			/* always assignable? */
			break;
		case PLPGSQL_DTYPE_REC:
			/* always assignable?  What about NEW/OLD? */
			break;
		case PLPGSQL_DTYPE_RECFIELD:
			/* always assignable? */
			break;
		case PLPGSQL_DTYPE_ARRAYELEM:
			/* always assignable? */
			break;
		default:
			elog(ERROR, "unrecognized dtype: %d", datum->dtype);
			break;
	}
}

/*
 * Read the argument of an INTO clause.  On entry, we have just read the
 * INTO keyword.
 */
static void
read_into_target(PLpgSQL_rec **rec, PLpgSQL_row **row, bool *strict)
{
	int			tok;

	/* Set default results */
	*rec = NULL;
	*row = NULL;
	if (strict)
		*strict = false;

	tok = yylex();
	if (strict && tok == K_STRICT)
	{
		*strict = true;
		tok = yylex();
	}

	/*
	 * Currently, a row or record variable can be the single INTO target,
	 * but not a member of a multi-target list.  So we throw error if there
	 * is a comma after it, because that probably means the user tried to
	 * write a multi-target list.  If this ever gets generalized, we should
	 * probably refactor read_into_scalar_list so it handles all cases.
	 */
	switch (tok)
	{
		case T_DATUM:
			if (yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_ROW)
			{
				check_assignable(yylval.wdatum.datum, yylloc);
				*row = (PLpgSQL_row *) yylval.wdatum.datum;

				if ((tok = yylex()) == ',')
					ereport(ERROR,
							(errcode(ERRCODE_SYNTAX_ERROR),
							 errmsg("record or row variable cannot be part of multiple-item INTO list"),
							 parser_errposition(yylloc)));
				plpgsql_push_back_token(tok);
			}
			else if (yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_REC)
			{
				check_assignable(yylval.wdatum.datum, yylloc);
				*rec = (PLpgSQL_rec *) yylval.wdatum.datum;

				if ((tok = yylex()) == ',')
					ereport(ERROR,
							(errcode(ERRCODE_SYNTAX_ERROR),
							 errmsg("record or row variable cannot be part of multiple-item INTO list"),
							 parser_errposition(yylloc)));
				plpgsql_push_back_token(tok);
			}
			else
			{
				*row = read_into_scalar_list(NameOfDatum(&(yylval.wdatum)),
											 yylval.wdatum.datum, yylloc);
			}
			break;

		default:
			/* just to give a better message than "syntax error" */
			current_token_is_not_variable(tok);
	}
}

/*
 * Given the first datum and name in the INTO list, continue to read
 * comma-separated scalar variables until we run out. Then construct
 * and return a fake "row" variable that represents the list of
 * scalars.
 */
static PLpgSQL_row *
read_into_scalar_list(char *initial_name,
					  PLpgSQL_datum *initial_datum,
					  int initial_location)
{
	int				 nfields;
	char			*fieldnames[1024];
	int				 varnos[1024];
	PLpgSQL_row		*row;
	int				 tok;

	check_assignable(initial_datum, initial_location);
	fieldnames[0] = initial_name;
	varnos[0]	  = initial_datum->dno;
	nfields		  = 1;

	while ((tok = yylex()) == ',')
	{
		/* Check for array overflow */
		if (nfields >= 1024)
			ereport(ERROR,
					(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
					 errmsg("too many INTO variables specified"),
					 parser_errposition(yylloc)));

		tok = yylex();
		switch (tok)
		{
			case T_DATUM:
				check_assignable(yylval.wdatum.datum, yylloc);
				if (yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_ROW ||
					yylval.wdatum.datum->dtype == PLPGSQL_DTYPE_REC)
					ereport(ERROR,
							(errcode(ERRCODE_SYNTAX_ERROR),
							 errmsg("\"%s\" is not a scalar variable",
									NameOfDatum(&(yylval.wdatum))),
							 parser_errposition(yylloc)));
				fieldnames[nfields] = NameOfDatum(&(yylval.wdatum));
				varnos[nfields++]	= yylval.wdatum.datum->dno;
				break;

			default:
				/* just to give a better message than "syntax error" */
				current_token_is_not_variable(tok);
		}
	}

	/*
	 * We read an extra, non-comma token from yylex(), so push it
	 * back onto the input stream
	 */
	plpgsql_push_back_token(tok);

	row = palloc(sizeof(PLpgSQL_row));
	row->dtype = PLPGSQL_DTYPE_ROW;
	row->refname = pstrdup("*internal*");
	row->lineno = plpgsql_location_to_lineno(initial_location);
	row->rowtupdesc = NULL;
	row->nfields = nfields;
	row->fieldnames = palloc(sizeof(char *) * nfields);
	row->varnos = palloc(sizeof(int) * nfields);
	while (--nfields >= 0)
	{
		row->fieldnames[nfields] = fieldnames[nfields];
		row->varnos[nfields] = varnos[nfields];
	}

	plpgsql_adddatum((PLpgSQL_datum *)row);

	return row;
}

/*
 * Convert a single scalar into a "row" list.  This is exactly
 * like read_into_scalar_list except we never consume any input.
 *
 * Note: lineno could be computed from location, but since callers
 * have it at hand already, we may as well pass it in.
 */
static PLpgSQL_row *
make_scalar_list1(char *initial_name,
				  PLpgSQL_datum *initial_datum,
				  int lineno, int location)
{
	PLpgSQL_row		*row;

	check_assignable(initial_datum, location);

	row = palloc(sizeof(PLpgSQL_row));
	row->dtype = PLPGSQL_DTYPE_ROW;
	row->refname = pstrdup("*internal*");
	row->lineno = lineno;
	row->rowtupdesc = NULL;
	row->nfields = 1;
	row->fieldnames = palloc(sizeof(char *));
	row->varnos = palloc(sizeof(int));
	row->fieldnames[0] = initial_name;
	row->varnos[0] = initial_datum->dno;

	plpgsql_adddatum((PLpgSQL_datum *)row);

	return row;
}

/*
 * When the PL/PgSQL parser expects to see a SQL statement, it is very
 * liberal in what it accepts; for example, we often assume an
 * unrecognized keyword is the beginning of a SQL statement. This
 * avoids the need to duplicate parts of the SQL grammar in the
 * PL/PgSQL grammar, but it means we can accept wildly malformed
 * input. To try and catch some of the more obviously invalid input,
 * we run the strings we expect to be SQL statements through the main
 * SQL parser.
 *
 * We only invoke the raw parser (not the analyzer); this doesn't do
 * any database access and does not check any semantic rules, it just
 * checks for basic syntactic correctness. We do this here, rather
 * than after parsing has finished, because a malformed SQL statement
 * may cause the PL/PgSQL parser to become confused about statement
 * borders. So it is best to bail out as early as we can.
 *
 * It is assumed that "stmt" represents a copy of the function source text
 * beginning at offset "location", with leader text of length "leaderlen"
 * (typically "SELECT ") prefixed to the source text.  We use this assumption
 * to transpose any error cursor position back to the function source text.
 * If no error cursor is provided, we'll just point at "location".
 */
static void
check_sql_expr(const char *stmt, int location, int leaderlen)
{
	sql_error_callback_arg cbarg;
	ErrorContextCallback  syntax_errcontext;
	MemoryContext oldCxt;

	if (!plpgsql_check_syntax)
		return;

	cbarg.location = location;
	cbarg.leaderlen = leaderlen;

	syntax_errcontext.callback = plpgsql_sql_error_callback;
	syntax_errcontext.arg = &cbarg;
	syntax_errcontext.previous = error_context_stack;
	error_context_stack = &syntax_errcontext;

	oldCxt = MemoryContextSwitchTo(compile_tmp_cxt);
	(void) raw_parser(stmt);
	MemoryContextSwitchTo(oldCxt);

	/* Restore former ereport callback */
	error_context_stack = syntax_errcontext.previous;
}

static void
plpgsql_sql_error_callback(void *arg)
{
	sql_error_callback_arg *cbarg = (sql_error_callback_arg *) arg;
	int			errpos;

	/*
	 * First, set up internalerrposition to point to the start of the
	 * statement text within the function text.  Note this converts
	 * location (a byte offset) to a character number.
	 */
	parser_errposition(cbarg->location);

	/*
	 * If the core parser provided an error position, transpose it.
	 * Note we are dealing with 1-based character numbers at this point.
	 */
	errpos = geterrposition();
	if (errpos > cbarg->leaderlen)
	{
		int		myerrpos = getinternalerrposition();

		if (myerrpos > 0)		/* safety check */
			internalerrposition(myerrpos + errpos - cbarg->leaderlen - 1);
	}

	/* In any case, flush errposition --- we want internalerrpos only */
	errposition(0);
}

/*
 * Parse a SQL datatype name and produce a PLpgSQL_type structure.
 *
 * The heavy lifting is done elsewhere.  Here we are only concerned
 * with setting up an errcontext link that will let us give an error
 * cursor pointing into the plpgsql function source, if necessary.
 * This is handled the same as in check_sql_expr(), and we likewise
 * expect that the given string is a copy from the source text.
 */
static PLpgSQL_type *
parse_datatype(const char *string, int location)
{
	Oid			type_id;
	int32		typmod;
	sql_error_callback_arg cbarg;
	ErrorContextCallback  syntax_errcontext;

	cbarg.location = location;
	cbarg.leaderlen = 0;

	syntax_errcontext.callback = plpgsql_sql_error_callback;
	syntax_errcontext.arg = &cbarg;
	syntax_errcontext.previous = error_context_stack;
	error_context_stack = &syntax_errcontext;

	/* Let the main parser try to parse it under standard SQL rules */
	parseTypeString(string, &type_id, &typmod);

	/* Restore former ereport callback */
	error_context_stack = syntax_errcontext.previous;

	/* Okay, build a PLpgSQL_type data structure for it */
	return plpgsql_build_datatype(type_id, typmod);
}

/*
 * Check block starting and ending labels match.
 */
static void
check_labels(const char *start_label, const char *end_label, int end_location)
{
	if (end_label)
	{
		if (!start_label)
			ereport(ERROR,
					(errcode(ERRCODE_SYNTAX_ERROR),
					 errmsg("end label \"%s\" specified for unlabelled block",
							end_label),
					 parser_errposition(end_location)));

		if (strcmp(start_label, end_label) != 0)
			ereport(ERROR,
					(errcode(ERRCODE_SYNTAX_ERROR),
					 errmsg("end label \"%s\" differs from block's label \"%s\"",
							end_label, start_label),
					 parser_errposition(end_location)));
	}
}

/*
 * Read the arguments (if any) for a cursor, followed by the until token
 *
 * If cursor has no args, just swallow the until token and return NULL.
 * If it does have args, we expect to see "( expr [, expr ...] )" followed
 * by the until token.  Consume all that and return a SELECT query that
 * evaluates the expression(s) (without the outer parens).
 */
static PLpgSQL_expr *
read_cursor_args(PLpgSQL_var *cursor, int until, const char *expected)
{
	PLpgSQL_expr *expr;
	int			tok;

	tok = yylex();
	if (cursor->cursor_explicit_argrow < 0)
	{
		/* No arguments expected */
		if (tok == '(')
			ereport(ERROR,
					(errcode(ERRCODE_SYNTAX_ERROR),
					 errmsg("cursor \"%s\" has no arguments",
							cursor->refname),
					 parser_errposition(yylloc)));

		if (tok != until)
			yyerror("syntax error");

		return NULL;
	}

	/* Else better provide arguments */
	if (tok != '(')
		ereport(ERROR,
				(errcode(ERRCODE_SYNTAX_ERROR),
				 errmsg("cursor \"%s\" has arguments",
						cursor->refname),
				 parser_errposition(yylloc)));

	/*
	 * Read expressions until the matching ')'.
	 */
	expr = read_sql_expression(')', ")");

	/* Next we'd better find the until token */
	tok = yylex();
	if (tok != until)
		yyerror("syntax error");

	return expr;
}

/*
 * Parse RAISE ... USING options
 */
static List *
read_raise_options(void)
{
	List	   *result = NIL;

	for (;;)
	{
		PLpgSQL_raise_option *opt;
		int		tok;

		if ((tok = yylex()) == 0)
			yyerror("unexpected end of function definition");

		opt = (PLpgSQL_raise_option *) palloc(sizeof(PLpgSQL_raise_option));

		if (tok_is_keyword(tok, &yylval,
						   K_ERRCODE, "errcode"))
			opt->opt_type = PLPGSQL_RAISEOPTION_ERRCODE;
		else if (tok_is_keyword(tok, &yylval,
								K_MESSAGE, "message"))
			opt->opt_type = PLPGSQL_RAISEOPTION_MESSAGE;
		else if (tok_is_keyword(tok, &yylval,
								K_DETAIL, "detail"))
			opt->opt_type = PLPGSQL_RAISEOPTION_DETAIL;
		else if (tok_is_keyword(tok, &yylval,
								K_HINT, "hint"))
			opt->opt_type = PLPGSQL_RAISEOPTION_HINT;
		else
			yyerror("unrecognized RAISE statement option");

		tok = yylex();
		if (tok != '=' && tok != COLON_EQUALS)
			yyerror("syntax error, expected \"=\"");

		opt->expr = read_sql_expression2(',', ';', ", or ;", &tok);

		result = lappend(result, opt);

		if (tok == ';')
			break;
	}

	return result;
}

/*
 * Fix up CASE statement
 */
static PLpgSQL_stmt *
make_case(int location, PLpgSQL_expr *t_expr,
		  List *case_when_list, List *else_stmts)
{
	PLpgSQL_stmt_case 	*new;

	new = palloc(sizeof(PLpgSQL_stmt_case));
	new->cmd_type = PLPGSQL_STMT_CASE;
	new->lineno = plpgsql_location_to_lineno(location);
	new->t_expr = t_expr;
	new->t_varno = 0;
	new->case_when_list = case_when_list;
	new->have_else = (else_stmts != NIL);
	/* Get rid of list-with-NULL hack */
	if (list_length(else_stmts) == 1 && linitial(else_stmts) == NULL)
		new->else_stmts = NIL;
	else
		new->else_stmts = else_stmts;

	/*
	 * When test expression is present, we create a var for it and then
	 * convert all the WHEN expressions to "VAR IN (original_expression)".
	 * This is a bit klugy, but okay since we haven't yet done more than
	 * read the expressions as text.  (Note that previous parsing won't
	 * have complained if the WHEN ... THEN expression contained multiple
	 * comma-separated values.)
	 */
	if (t_expr)
	{
		char	varname[32];
		PLpgSQL_var *t_var;
		ListCell *l;

		/* use a name unlikely to collide with any user names */
		snprintf(varname, sizeof(varname), "__Case__Variable_%d__",
				 plpgsql_nDatums);

		/*
		 * We don't yet know the result datatype of t_expr.  Build the
		 * variable as if it were INT4; we'll fix this at runtime if needed.
		 */
		t_var = (PLpgSQL_var *)
			plpgsql_build_variable(varname, new->lineno,
								   plpgsql_build_datatype(INT4OID, -1),
								   true);
		new->t_varno = t_var->dno;

		foreach(l, case_when_list)
		{
			PLpgSQL_case_when *cwt = (PLpgSQL_case_when *) lfirst(l);
			PLpgSQL_expr *expr = cwt->expr;
			StringInfoData	ds;

			/* copy expression query without SELECT keyword (expr->query + 7) */
			Assert(strncmp(expr->query, "SELECT ", 7) == 0);

			/* And do the string hacking */
			initStringInfo(&ds);

			appendStringInfo(&ds, "SELECT \"%s\" IN (%s)",
							 varname, expr->query + 7);

			pfree(expr->query);
			expr->query = pstrdup(ds.data);
			/* Adjust expr's namespace to include the case variable */
			expr->ns = plpgsql_ns_top();

			pfree(ds.data);
		}
	}

	return (PLpgSQL_stmt *) new;
}

