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Diffstat (limited to 'src/bin/pgbench/exprparse.c')
| -rw-r--r-- | src/bin/pgbench/exprparse.c | 2197 |
1 files changed, 2197 insertions, 0 deletions
diff --git a/src/bin/pgbench/exprparse.c b/src/bin/pgbench/exprparse.c new file mode 100644 index 0000000..966dc64 --- /dev/null +++ b/src/bin/pgbench/exprparse.c @@ -0,0 +1,2197 @@ +/* A Bison parser, made by GNU Bison 3.7.5. */ + +/* Bison implementation for Yacc-like parsers in C + + Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2021 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */ + +/* As a special exception, you may create a larger work that contains + part or all of the Bison parser skeleton and distribute that work + under terms of your choice, so long as that work isn't itself a + parser generator using the skeleton or a modified version thereof + as a parser skeleton. Alternatively, if you modify or redistribute + the parser skeleton itself, you may (at your option) remove this + special exception, which will cause the skeleton and the resulting + Bison output files to be licensed under the GNU General Public + License without this special exception. + + This special exception was added by the Free Software Foundation in + version 2.2 of Bison. */ + +/* C LALR(1) parser skeleton written by Richard Stallman, by + simplifying the original so-called "semantic" parser. */ + +/* DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual, + especially those whose name start with YY_ or yy_. They are + private implementation details that can be changed or removed. */ + +/* 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, and Bison version. */ +#define YYBISON 30705 + +/* Bison version string. */ +#define YYBISON_VERSION "3.7.5" + +/* Skeleton name. */ +#define YYSKELETON_NAME "yacc.c" + +/* Pure parsers. */ +#define YYPURE 1 + +/* Push parsers. */ +#define YYPUSH 0 + +/* Pull parsers. */ +#define YYPULL 1 + + +/* Substitute the variable and function names. */ +#define yyparse expr_yyparse +#define yylex expr_yylex +#define yyerror expr_yyerror +#define yydebug expr_yydebug +#define yynerrs expr_yynerrs + +/* First part of user prologue. */ +#line 1 "exprparse.y" + +/*------------------------------------------------------------------------- + * + * exprparse.y + * bison grammar for a simple expression syntax + * + * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/bin/pgbench/exprparse.y + * + *------------------------------------------------------------------------- + */ + +#include "postgres_fe.h" + +#include "pgbench.h" + +#define PGBENCH_NARGS_VARIABLE (-1) +#define PGBENCH_NARGS_CASE (-2) +#define PGBENCH_NARGS_HASH (-3) +#define PGBENCH_NARGS_PERMUTE (-4) + +PgBenchExpr *expr_parse_result; + +static PgBenchExprList *make_elist(PgBenchExpr *exp, PgBenchExprList *list); +static PgBenchExpr *make_null_constant(void); +static PgBenchExpr *make_boolean_constant(bool bval); +static PgBenchExpr *make_integer_constant(int64 ival); +static PgBenchExpr *make_double_constant(double dval); +static PgBenchExpr *make_variable(char *varname); +static PgBenchExpr *make_op(yyscan_t yyscanner, const char *operator, + PgBenchExpr *lexpr, PgBenchExpr *rexpr); +static PgBenchExpr *make_uop(yyscan_t yyscanner, const char *operator, PgBenchExpr *expr); +static int find_func(yyscan_t yyscanner, const char *fname); +static PgBenchExpr *make_func(yyscan_t yyscanner, int fnumber, PgBenchExprList *args); +static PgBenchExpr *make_case(yyscan_t yyscanner, PgBenchExprList *when_then_list, PgBenchExpr *else_part); + + +#line 116 "exprparse.c" + +# ifndef YY_CAST +# ifdef __cplusplus +# define YY_CAST(Type, Val) static_cast<Type> (Val) +# define YY_REINTERPRET_CAST(Type, Val) reinterpret_cast<Type> (Val) +# else +# define YY_CAST(Type, Val) ((Type) (Val)) +# define YY_REINTERPRET_CAST(Type, Val) ((Type) (Val)) +# endif +# endif +# ifndef YY_NULLPTR +# if defined __cplusplus +# if 201103L <= __cplusplus +# define YY_NULLPTR nullptr +# else +# define YY_NULLPTR 0 +# endif +# else +# define YY_NULLPTR ((void*)0) +# endif +# endif + + +/* Debug traces. */ +#ifndef YYDEBUG +# define YYDEBUG 0 +#endif +#if YYDEBUG +extern int expr_yydebug; +#endif + +/* Token kinds. */ +#ifndef YYTOKENTYPE +# define YYTOKENTYPE + enum yytokentype + { + YYEMPTY = -2, + YYEOF = 0, /* "end of file" */ + YYerror = 256, /* error */ + YYUNDEF = 257, /* "invalid token" */ + NULL_CONST = 258, /* NULL_CONST */ + INTEGER_CONST = 259, /* INTEGER_CONST */ + MAXINT_PLUS_ONE_CONST = 260, /* MAXINT_PLUS_ONE_CONST */ + DOUBLE_CONST = 261, /* DOUBLE_CONST */ + BOOLEAN_CONST = 262, /* BOOLEAN_CONST */ + VARIABLE = 263, /* VARIABLE */ + FUNCTION = 264, /* FUNCTION */ + AND_OP = 265, /* AND_OP */ + OR_OP = 266, /* OR_OP */ + NOT_OP = 267, /* NOT_OP */ + NE_OP = 268, /* NE_OP */ + LE_OP = 269, /* LE_OP */ + GE_OP = 270, /* GE_OP */ + LS_OP = 271, /* LS_OP */ + RS_OP = 272, /* RS_OP */ + IS_OP = 273, /* IS_OP */ + CASE_KW = 274, /* CASE_KW */ + WHEN_KW = 275, /* WHEN_KW */ + THEN_KW = 276, /* THEN_KW */ + ELSE_KW = 277, /* ELSE_KW */ + END_KW = 278, /* END_KW */ + ISNULL_OP = 279, /* ISNULL_OP */ + NOTNULL_OP = 280, /* NOTNULL_OP */ + UNARY = 281 /* UNARY */ + }; + typedef enum yytokentype yytoken_kind_t; +#endif + +/* Value type. */ +#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED +union YYSTYPE +{ +#line 49 "exprparse.y" + + int64 ival; + double dval; + bool bval; + char *str; + PgBenchExpr *expr; + PgBenchExprList *elist; + +#line 198 "exprparse.c" + +}; +typedef union YYSTYPE YYSTYPE; +# define YYSTYPE_IS_TRIVIAL 1 +# define YYSTYPE_IS_DECLARED 1 +#endif + + + +int expr_yyparse (yyscan_t yyscanner); + + +/* Symbol kind. */ +enum yysymbol_kind_t +{ + YYSYMBOL_YYEMPTY = -2, + YYSYMBOL_YYEOF = 0, /* "end of file" */ + YYSYMBOL_YYerror = 1, /* error */ + YYSYMBOL_YYUNDEF = 2, /* "invalid token" */ + YYSYMBOL_NULL_CONST = 3, /* NULL_CONST */ + YYSYMBOL_INTEGER_CONST = 4, /* INTEGER_CONST */ + YYSYMBOL_MAXINT_PLUS_ONE_CONST = 5, /* MAXINT_PLUS_ONE_CONST */ + YYSYMBOL_DOUBLE_CONST = 6, /* DOUBLE_CONST */ + YYSYMBOL_BOOLEAN_CONST = 7, /* BOOLEAN_CONST */ + YYSYMBOL_VARIABLE = 8, /* VARIABLE */ + YYSYMBOL_FUNCTION = 9, /* FUNCTION */ + YYSYMBOL_AND_OP = 10, /* AND_OP */ + YYSYMBOL_OR_OP = 11, /* OR_OP */ + YYSYMBOL_NOT_OP = 12, /* NOT_OP */ + YYSYMBOL_NE_OP = 13, /* NE_OP */ + YYSYMBOL_LE_OP = 14, /* LE_OP */ + YYSYMBOL_GE_OP = 15, /* GE_OP */ + YYSYMBOL_LS_OP = 16, /* LS_OP */ + YYSYMBOL_RS_OP = 17, /* RS_OP */ + YYSYMBOL_IS_OP = 18, /* IS_OP */ + YYSYMBOL_CASE_KW = 19, /* CASE_KW */ + YYSYMBOL_WHEN_KW = 20, /* WHEN_KW */ + YYSYMBOL_THEN_KW = 21, /* THEN_KW */ + YYSYMBOL_ELSE_KW = 22, /* ELSE_KW */ + YYSYMBOL_END_KW = 23, /* END_KW */ + YYSYMBOL_ISNULL_OP = 24, /* ISNULL_OP */ + YYSYMBOL_NOTNULL_OP = 25, /* NOTNULL_OP */ + YYSYMBOL_26_ = 26, /* '<' */ + YYSYMBOL_27_ = 27, /* '>' */ + YYSYMBOL_28_ = 28, /* '=' */ + YYSYMBOL_29_ = 29, /* '|' */ + YYSYMBOL_30_ = 30, /* '#' */ + YYSYMBOL_31_ = 31, /* '&' */ + YYSYMBOL_32_ = 32, /* '~' */ + YYSYMBOL_33_ = 33, /* '+' */ + YYSYMBOL_34_ = 34, /* '-' */ + YYSYMBOL_35_ = 35, /* '*' */ + YYSYMBOL_36_ = 36, /* '/' */ + YYSYMBOL_37_ = 37, /* '%' */ + YYSYMBOL_UNARY = 38, /* UNARY */ + YYSYMBOL_39_ = 39, /* ',' */ + YYSYMBOL_40_ = 40, /* '(' */ + YYSYMBOL_41_ = 41, /* ')' */ + YYSYMBOL_YYACCEPT = 42, /* $accept */ + YYSYMBOL_result = 43, /* result */ + YYSYMBOL_elist = 44, /* elist */ + YYSYMBOL_expr = 45, /* expr */ + YYSYMBOL_when_then_list = 46, /* when_then_list */ + YYSYMBOL_case_control = 47, /* case_control */ + YYSYMBOL_function = 48 /* function */ +}; +typedef enum yysymbol_kind_t yysymbol_kind_t; + + + + +#ifdef short +# undef short +#endif + +/* On compilers that do not define __PTRDIFF_MAX__ etc., make sure + <limits.h> and (if available) <stdint.h> are included + so that the code can choose integer types of a good width. */ + +#ifndef __PTRDIFF_MAX__ +# include <limits.h> /* INFRINGES ON USER NAME SPACE */ +# if defined __STDC_VERSION__ && 199901 <= __STDC_VERSION__ +# include <stdint.h> /* INFRINGES ON USER NAME SPACE */ +# define YY_STDINT_H +# endif +#endif + +/* Narrow types that promote to a signed type and that can represent a + signed or unsigned integer of at least N bits. In tables they can + save space and decrease cache pressure. Promoting to a signed type + helps avoid bugs in integer arithmetic. */ + +#ifdef __INT_LEAST8_MAX__ +typedef __INT_LEAST8_TYPE__ yytype_int8; +#elif defined YY_STDINT_H +typedef int_least8_t yytype_int8; +#else +typedef signed char yytype_int8; +#endif + +#ifdef __INT_LEAST16_MAX__ +typedef __INT_LEAST16_TYPE__ yytype_int16; +#elif defined YY_STDINT_H +typedef int_least16_t yytype_int16; +#else +typedef short yytype_int16; +#endif + +/* Work around bug in HP-UX 11.23, which defines these macros + incorrectly for preprocessor constants. This workaround can likely + be removed in 2023, as HPE has promised support for HP-UX 11.23 + (aka HP-UX 11i v2) only through the end of 2022; see Table 2 of + <https://h20195.www2.hpe.com/V2/getpdf.aspx/4AA4-7673ENW.pdf>. */ +#ifdef __hpux +# undef UINT_LEAST8_MAX +# undef UINT_LEAST16_MAX +# define UINT_LEAST8_MAX 255 +# define UINT_LEAST16_MAX 65535 +#endif + +#if defined __UINT_LEAST8_MAX__ && __UINT_LEAST8_MAX__ <= __INT_MAX__ +typedef __UINT_LEAST8_TYPE__ yytype_uint8; +#elif (!defined __UINT_LEAST8_MAX__ && defined YY_STDINT_H \ + && UINT_LEAST8_MAX <= INT_MAX) +typedef uint_least8_t yytype_uint8; +#elif !defined __UINT_LEAST8_MAX__ && UCHAR_MAX <= INT_MAX +typedef unsigned char yytype_uint8; +#else +typedef short yytype_uint8; +#endif + +#if defined __UINT_LEAST16_MAX__ && __UINT_LEAST16_MAX__ <= __INT_MAX__ +typedef __UINT_LEAST16_TYPE__ yytype_uint16; +#elif (!defined __UINT_LEAST16_MAX__ && defined YY_STDINT_H \ + && UINT_LEAST16_MAX <= INT_MAX) +typedef uint_least16_t yytype_uint16; +#elif !defined __UINT_LEAST16_MAX__ && USHRT_MAX <= INT_MAX +typedef unsigned short yytype_uint16; +#else +typedef int yytype_uint16; +#endif + +#ifndef YYPTRDIFF_T +# if defined __PTRDIFF_TYPE__ && defined __PTRDIFF_MAX__ +# define YYPTRDIFF_T __PTRDIFF_TYPE__ +# define YYPTRDIFF_MAXIMUM __PTRDIFF_MAX__ +# elif defined PTRDIFF_MAX +# ifndef ptrdiff_t +# include <stddef.h> /* INFRINGES ON USER NAME SPACE */ +# endif +# define YYPTRDIFF_T ptrdiff_t +# define YYPTRDIFF_MAXIMUM PTRDIFF_MAX +# else +# define YYPTRDIFF_T long +# define YYPTRDIFF_MAXIMUM LONG_MAX +# endif +#endif + +#ifndef YYSIZE_T +# ifdef __SIZE_TYPE__ +# define YYSIZE_T __SIZE_TYPE__ +# elif defined size_t +# define YYSIZE_T size_t +# elif defined __STDC_VERSION__ && 199901 <= __STDC_VERSION__ +# include <stddef.h> /* INFRINGES ON USER NAME SPACE */ +# define YYSIZE_T size_t +# else +# define YYSIZE_T unsigned +# endif +#endif + +#define YYSIZE_MAXIMUM \ + YY_CAST (YYPTRDIFF_T, \ + (YYPTRDIFF_MAXIMUM < YY_CAST (YYSIZE_T, -1) \ + ? YYPTRDIFF_MAXIMUM \ + : YY_CAST (YYSIZE_T, -1))) + +#define YYSIZEOF(X) YY_CAST (YYPTRDIFF_T, sizeof (X)) + + +/* Stored state numbers (used for stacks). */ +typedef yytype_int8 yy_state_t; + +/* State numbers in computations. */ +typedef int yy_state_fast_t; + +#ifndef YY_ +# if defined YYENABLE_NLS && YYENABLE_NLS +# if ENABLE_NLS +# include <libintl.h> /* INFRINGES ON USER NAME SPACE */ +# define YY_(Msgid) dgettext ("bison-runtime", Msgid) +# endif +# endif +# ifndef YY_ +# define YY_(Msgid) Msgid +# endif +#endif + + +#ifndef YY_ATTRIBUTE_PURE +# if defined __GNUC__ && 2 < __GNUC__ + (96 <= __GNUC_MINOR__) +# define YY_ATTRIBUTE_PURE __attribute__ ((__pure__)) +# else +# define YY_ATTRIBUTE_PURE +# endif +#endif + +#ifndef YY_ATTRIBUTE_UNUSED +# if defined __GNUC__ && 2 < __GNUC__ + (7 <= __GNUC_MINOR__) +# define YY_ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +# else +# define YY_ATTRIBUTE_UNUSED +# endif +#endif + +/* Suppress unused-variable warnings by "using" E. */ +#if ! defined lint || defined __GNUC__ +# define YY_USE(E) ((void) (E)) +#else +# define YY_USE(E) /* empty */ +#endif + +#if defined __GNUC__ && ! defined __ICC && 407 <= __GNUC__ * 100 + __GNUC_MINOR__ +/* Suppress an incorrect diagnostic about yylval being uninitialized. */ +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"") \ + _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"") +# define YY_IGNORE_MAYBE_UNINITIALIZED_END \ + _Pragma ("GCC diagnostic pop") +#else +# define YY_INITIAL_VALUE(Value) Value +#endif +#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN +# define YY_IGNORE_MAYBE_UNINITIALIZED_END +#endif +#ifndef YY_INITIAL_VALUE +# define YY_INITIAL_VALUE(Value) /* Nothing. */ +#endif + +#if defined __cplusplus && defined __GNUC__ && ! defined __ICC && 6 <= __GNUC__ +# define YY_IGNORE_USELESS_CAST_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wuseless-cast\"") +# define YY_IGNORE_USELESS_CAST_END \ + _Pragma ("GCC diagnostic pop") +#endif +#ifndef YY_IGNORE_USELESS_CAST_BEGIN +# define YY_IGNORE_USELESS_CAST_BEGIN +# define YY_IGNORE_USELESS_CAST_END +#endif + + +#define YY_ASSERT(E) ((void) (0 && (E))) + +#if !defined yyoverflow + +/* The parser invokes alloca or malloc; define the necessary symbols. */ + +# ifdef YYSTACK_USE_ALLOCA +# if YYSTACK_USE_ALLOCA +# ifdef __GNUC__ +# define YYSTACK_ALLOC __builtin_alloca +# elif defined __BUILTIN_VA_ARG_INCR +# include <alloca.h> /* INFRINGES ON USER NAME SPACE */ +# elif defined _AIX +# define YYSTACK_ALLOC __alloca +# elif defined _MSC_VER +# include <malloc.h> /* INFRINGES ON USER NAME SPACE */ +# define alloca _alloca +# else +# define YYSTACK_ALLOC alloca +# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS +# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ + /* Use EXIT_SUCCESS as a witness for stdlib.h. */ +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +# endif +# endif +# endif +# endif +# endif + +# ifdef YYSTACK_ALLOC + /* Pacify GCC's 'empty if-body' warning. */ +# define YYSTACK_FREE(Ptr) do { /* empty */; } while (0) +# ifndef YYSTACK_ALLOC_MAXIMUM + /* The OS might guarantee only one guard page at the bottom of the stack, + and a page size can be as small as 4096 bytes. So we cannot safely + invoke alloca (N) if N exceeds 4096. Use a slightly smaller number + to allow for a few compiler-allocated temporary stack slots. */ +# define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */ +# endif +# else +# define YYSTACK_ALLOC YYMALLOC +# define YYSTACK_FREE YYFREE +# ifndef YYSTACK_ALLOC_MAXIMUM +# define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM +# endif +# if (defined __cplusplus && ! defined EXIT_SUCCESS \ + && ! ((defined YYMALLOC || defined malloc) \ + && (defined YYFREE || defined free))) +# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +# endif +# endif +# ifndef YYMALLOC +# define YYMALLOC malloc +# if ! defined malloc && ! defined EXIT_SUCCESS +void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ +# endif +# endif +# ifndef YYFREE +# define YYFREE free +# if ! defined free && ! defined EXIT_SUCCESS +void free (void *); /* INFRINGES ON USER NAME SPACE */ +# endif +# endif +# endif +#endif /* !defined yyoverflow */ + +#if (! defined yyoverflow \ + && (! defined __cplusplus \ + || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))) + +/* A type that is properly aligned for any stack member. */ +union yyalloc +{ + yy_state_t yyss_alloc; + YYSTYPE yyvs_alloc; +}; + +/* The size of the maximum gap between one aligned stack and the next. */ +# define YYSTACK_GAP_MAXIMUM (YYSIZEOF (union yyalloc) - 1) + +/* The size of an array large to enough to hold all stacks, each with + N elements. */ +# define YYSTACK_BYTES(N) \ + ((N) * (YYSIZEOF (yy_state_t) + YYSIZEOF (YYSTYPE)) \ + + YYSTACK_GAP_MAXIMUM) + +# define YYCOPY_NEEDED 1 + +/* 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_alloc, Stack) \ + do \ + { \ + YYPTRDIFF_T yynewbytes; \ + YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \ + Stack = &yyptr->Stack_alloc; \ + yynewbytes = yystacksize * YYSIZEOF (*Stack) + YYSTACK_GAP_MAXIMUM; \ + yyptr += yynewbytes / YYSIZEOF (*yyptr); \ + } \ + while (0) + +#endif + +#if defined YYCOPY_NEEDED && YYCOPY_NEEDED +/* Copy COUNT objects from SRC to DST. The source and destination do + not overlap. */ +# ifndef YYCOPY +# if defined __GNUC__ && 1 < __GNUC__ +# define YYCOPY(Dst, Src, Count) \ + __builtin_memcpy (Dst, Src, YY_CAST (YYSIZE_T, (Count)) * sizeof (*(Src))) +# else +# define YYCOPY(Dst, Src, Count) \ + do \ + { \ + YYPTRDIFF_T yyi; \ + for (yyi = 0; yyi < (Count); yyi++) \ + (Dst)[yyi] = (Src)[yyi]; \ + } \ + while (0) +# endif +# endif +#endif /* !YYCOPY_NEEDED */ + +/* YYFINAL -- State number of the termination state. */ +#define YYFINAL 25 +/* YYLAST -- Last index in YYTABLE. */ +#define YYLAST 320 + +/* YYNTOKENS -- Number of terminals. */ +#define YYNTOKENS 42 +/* YYNNTS -- Number of nonterminals. */ +#define YYNNTS 7 +/* YYNRULES -- Number of rules. */ +#define YYNRULES 47 +/* YYNSTATES -- Number of states. */ +#define YYNSTATES 88 + +/* YYMAXUTOK -- Last valid token kind. */ +#define YYMAXUTOK 281 + + +/* YYTRANSLATE(TOKEN-NUM) -- Symbol number corresponding to TOKEN-NUM + as returned by yylex, with out-of-bounds checking. */ +#define YYTRANSLATE(YYX) \ + (0 <= (YYX) && (YYX) <= YYMAXUTOK \ + ? YY_CAST (yysymbol_kind_t, yytranslate[YYX]) \ + : YYSYMBOL_YYUNDEF) + +/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM + as returned by yylex. */ +static const yytype_int8 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, 30, 2, 37, 31, 2, + 40, 41, 35, 33, 39, 34, 2, 36, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 26, 28, 27, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 29, 2, 32, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 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, 38 +}; + +#if YYDEBUG + /* YYRLINE[YYN] -- Source line where rule number YYN was defined. */ +static const yytype_uint8 yyrline[] = +{ + 0, 83, 83, 85, 86, 87, 90, 91, 93, 96, + 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, + 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, + 121, 122, 126, 127, 132, 136, 142, 143, 144, 145, + 147, 148, 149, 153, 154, 157, 158, 160 +}; +#endif + +/** Accessing symbol of state STATE. */ +#define YY_ACCESSING_SYMBOL(State) YY_CAST (yysymbol_kind_t, yystos[State]) + +#if YYDEBUG || 0 +/* The user-facing name of the symbol whose (internal) number is + YYSYMBOL. No bounds checking. */ +static const char *yysymbol_name (yysymbol_kind_t yysymbol) YY_ATTRIBUTE_UNUSED; + +/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. + First, the terminals, then, starting at YYNTOKENS, nonterminals. */ +static const char *const yytname[] = +{ + "\"end of file\"", "error", "\"invalid token\"", "NULL_CONST", + "INTEGER_CONST", "MAXINT_PLUS_ONE_CONST", "DOUBLE_CONST", + "BOOLEAN_CONST", "VARIABLE", "FUNCTION", "AND_OP", "OR_OP", "NOT_OP", + "NE_OP", "LE_OP", "GE_OP", "LS_OP", "RS_OP", "IS_OP", "CASE_KW", + "WHEN_KW", "THEN_KW", "ELSE_KW", "END_KW", "ISNULL_OP", "NOTNULL_OP", + "'<'", "'>'", "'='", "'|'", "'#'", "'&'", "'~'", "'+'", "'-'", "'*'", + "'/'", "'%'", "UNARY", "','", "'('", "')'", "$accept", "result", "elist", + "expr", "when_then_list", "case_control", "function", YY_NULLPTR +}; + +static const char * +yysymbol_name (yysymbol_kind_t yysymbol) +{ + return yytname[yysymbol]; +} +#endif + +#ifdef YYPRINT +/* YYTOKNUM[NUM] -- (External) token number corresponding to the + (internal) symbol number NUM (which must be that of a token). */ +static const yytype_int16 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, 60, 62, 61, 124, + 35, 38, 126, 43, 45, 42, 47, 37, 281, 44, + 40, 41 +}; +#endif + +#define YYPACT_NINF (-33) + +#define yypact_value_is_default(Yyn) \ + ((Yyn) == YYPACT_NINF) + +#define YYTABLE_NINF (-1) + +#define yytable_value_is_error(Yyn) \ + ((Yyn) == YYTABLE_NINF) + + /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing + STATE-NUM. */ +static const yytype_int16 yypact[] = +{ + 64, -33, -33, -33, -33, -33, -33, 64, -19, 64, + 64, 46, 64, 13, 205, -33, -22, 258, 64, -6, + 11, -33, -33, -33, 92, -33, 64, 64, 64, 64, + 64, 64, 64, 3, -33, -33, 64, 64, 64, 64, + 64, 64, 64, 64, 64, 64, 64, 64, 121, 64, + 64, -33, -33, 258, 233, 283, 283, 283, 11, 11, + -33, -33, 5, 283, 283, 283, 11, 11, 11, -9, + -9, -33, -33, -33, -32, 205, 64, 149, 177, -33, + -33, 64, -33, 205, 64, -33, 205, 205 +}; + + /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM. + Performed when YYTABLE does not specify something else to do. Zero + means the default is an error. */ +static const yytype_int8 yydefact[] = +{ + 0, 36, 38, 39, 37, 40, 47, 0, 0, 0, + 0, 0, 0, 0, 2, 42, 0, 11, 0, 0, + 10, 7, 9, 8, 0, 1, 0, 0, 0, 0, + 0, 0, 0, 0, 30, 31, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, + 0, 45, 6, 28, 29, 22, 18, 20, 26, 27, + 32, 34, 0, 17, 19, 21, 24, 25, 23, 12, + 13, 14, 15, 16, 0, 4, 0, 0, 0, 33, + 35, 0, 41, 44, 0, 46, 5, 43 +}; + + /* YYPGOTO[NTERM-NUM]. */ +static const yytype_int8 yypgoto[] = +{ + -33, -33, -33, -7, -33, -33, -33 +}; + + /* YYDEFGOTO[NTERM-NUM]. */ +static const yytype_int8 yydefgoto[] = +{ + 0, 13, 74, 14, 19, 15, 16 +}; + + /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM. If + positive, shift that token. If negative, reduce the rule whose + number is the opposite. If YYTABLE_NINF, syntax error. */ +static const yytype_int8 yytable[] = +{ + 17, 18, 20, 21, 23, 24, 60, 81, 79, 82, + 61, 48, 80, 25, 49, 62, 50, 51, 47, 53, + 54, 55, 56, 57, 58, 59, 44, 45, 46, 63, + 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, + 75, 0, 77, 78, 42, 43, 44, 45, 46, 1, + 2, 22, 3, 4, 5, 6, 0, 0, 7, 0, + 0, 0, 0, 0, 0, 8, 0, 1, 2, 83, + 3, 4, 5, 6, 86, 0, 7, 87, 9, 10, + 11, 0, 0, 8, 0, 0, 12, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 9, 10, 11, 0, + 0, 0, 26, 27, 12, 28, 29, 30, 31, 32, + 33, 0, 0, 0, 0, 0, 34, 35, 36, 37, + 38, 39, 40, 41, 0, 42, 43, 44, 45, 46, + 0, 26, 27, 52, 28, 29, 30, 31, 32, 33, + 0, 0, 76, 0, 0, 34, 35, 36, 37, 38, + 39, 40, 41, 0, 42, 43, 44, 45, 46, 26, + 27, 0, 28, 29, 30, 31, 32, 33, 0, 0, + 84, 0, 0, 34, 35, 36, 37, 38, 39, 40, + 41, 0, 42, 43, 44, 45, 46, 26, 27, 0, + 28, 29, 30, 31, 32, 33, 0, 0, 0, 0, + 85, 34, 35, 36, 37, 38, 39, 40, 41, 0, + 42, 43, 44, 45, 46, 26, 27, 0, 28, 29, + 30, 31, 32, 33, 0, 0, 0, 0, 0, 34, + 35, 36, 37, 38, 39, 40, 41, 0, 42, 43, + 44, 45, 46, 26, 0, 0, 28, 29, 30, 31, + 32, 33, 0, 0, 0, 0, 0, 34, 35, 36, + 37, 38, 39, 40, 41, 0, 42, 43, 44, 45, + 46, 28, 29, 30, 31, 32, 33, 0, 0, 0, + 0, 0, 34, 35, 36, 37, 38, 39, 40, 41, + 0, 42, 43, 44, 45, 46, -1, -1, -1, 31, + 32, 0, 0, 0, 0, 0, 0, 0, 0, -1, + -1, -1, 39, 40, 41, 0, 42, 43, 44, 45, + 46 +}; + +static const yytype_int8 yycheck[] = +{ + 7, 20, 9, 10, 11, 12, 3, 39, 3, 41, + 7, 18, 7, 0, 20, 12, 22, 23, 40, 26, + 27, 28, 29, 30, 31, 32, 35, 36, 37, 36, + 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, + 47, -1, 49, 50, 33, 34, 35, 36, 37, 3, + 4, 5, 6, 7, 8, 9, -1, -1, 12, -1, + -1, -1, -1, -1, -1, 19, -1, 3, 4, 76, + 6, 7, 8, 9, 81, -1, 12, 84, 32, 33, + 34, -1, -1, 19, -1, -1, 40, -1, -1, -1, + -1, -1, -1, -1, -1, -1, 32, 33, 34, -1, + -1, -1, 10, 11, 40, 13, 14, 15, 16, 17, + 18, -1, -1, -1, -1, -1, 24, 25, 26, 27, + 28, 29, 30, 31, -1, 33, 34, 35, 36, 37, + -1, 10, 11, 41, 13, 14, 15, 16, 17, 18, + -1, -1, 21, -1, -1, 24, 25, 26, 27, 28, + 29, 30, 31, -1, 33, 34, 35, 36, 37, 10, + 11, -1, 13, 14, 15, 16, 17, 18, -1, -1, + 21, -1, -1, 24, 25, 26, 27, 28, 29, 30, + 31, -1, 33, 34, 35, 36, 37, 10, 11, -1, + 13, 14, 15, 16, 17, 18, -1, -1, -1, -1, + 23, 24, 25, 26, 27, 28, 29, 30, 31, -1, + 33, 34, 35, 36, 37, 10, 11, -1, 13, 14, + 15, 16, 17, 18, -1, -1, -1, -1, -1, 24, + 25, 26, 27, 28, 29, 30, 31, -1, 33, 34, + 35, 36, 37, 10, -1, -1, 13, 14, 15, 16, + 17, 18, -1, -1, -1, -1, -1, 24, 25, 26, + 27, 28, 29, 30, 31, -1, 33, 34, 35, 36, + 37, 13, 14, 15, 16, 17, 18, -1, -1, -1, + -1, -1, 24, 25, 26, 27, 28, 29, 30, 31, + -1, 33, 34, 35, 36, 37, 13, 14, 15, 16, + 17, -1, -1, -1, -1, -1, -1, -1, -1, 26, + 27, 28, 29, 30, 31, -1, 33, 34, 35, 36, + 37 +}; + + /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing + symbol of state STATE-NUM. */ +static const yytype_int8 yystos[] = +{ + 0, 3, 4, 6, 7, 8, 9, 12, 19, 32, + 33, 34, 40, 43, 45, 47, 48, 45, 20, 46, + 45, 45, 5, 45, 45, 0, 10, 11, 13, 14, + 15, 16, 17, 18, 24, 25, 26, 27, 28, 29, + 30, 31, 33, 34, 35, 36, 37, 40, 45, 20, + 22, 23, 41, 45, 45, 45, 45, 45, 45, 45, + 3, 7, 12, 45, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 45, 44, 45, 21, 45, 45, 3, + 7, 39, 41, 45, 21, 23, 45, 45 +}; + + /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ +static const yytype_int8 yyr1[] = +{ + 0, 42, 43, 44, 44, 44, 45, 45, 45, 45, + 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, + 45, 45, 45, 46, 46, 47, 47, 48 +}; + + /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN. */ +static const yytype_int8 yyr2[] = +{ + 0, 2, 1, 0, 1, 3, 3, 2, 2, 2, + 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 2, 2, 3, 4, 3, 4, 1, 1, 1, 1, + 1, 4, 1, 5, 4, 3, 5, 1 +}; + + +enum { YYENOMEM = -2 }; + +#define yyerrok (yyerrstatus = 0) +#define yyclearin (yychar = YYEMPTY) + +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab +#define YYERROR goto yyerrorlab + + +#define YYRECOVERING() (!!yyerrstatus) + +#define YYBACKUP(Token, Value) \ + do \ + if (yychar == YYEMPTY) \ + { \ + yychar = (Token); \ + yylval = (Value); \ + YYPOPSTACK (yylen); \ + yystate = *yyssp; \ + goto yybackup; \ + } \ + else \ + { \ + yyerror (yyscanner, YY_("syntax error: cannot back up")); \ + YYERROR; \ + } \ + while (0) + +/* Backward compatibility with an undocumented macro. + Use YYerror or YYUNDEF. */ +#define YYERRCODE YYUNDEF + + +/* 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) + +/* This macro is provided for backward compatibility. */ +# ifndef YY_LOCATION_PRINT +# define YY_LOCATION_PRINT(File, Loc) ((void) 0) +# endif + + +# define YY_SYMBOL_PRINT(Title, Kind, Value, Location) \ +do { \ + if (yydebug) \ + { \ + YYFPRINTF (stderr, "%s ", Title); \ + yy_symbol_print (stderr, \ + Kind, Value, yyscanner); \ + YYFPRINTF (stderr, "\n"); \ + } \ +} while (0) + + +/*-----------------------------------. +| Print this symbol's value on YYO. | +`-----------------------------------*/ + +static void +yy_symbol_value_print (FILE *yyo, + yysymbol_kind_t yykind, YYSTYPE const * const yyvaluep, yyscan_t yyscanner) +{ + FILE *yyoutput = yyo; + YY_USE (yyoutput); + YY_USE (yyscanner); + if (!yyvaluep) + return; +# ifdef YYPRINT + if (yykind < YYNTOKENS) + YYPRINT (yyo, yytoknum[yykind], *yyvaluep); +# endif + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + YY_USE (yykind); + YY_IGNORE_MAYBE_UNINITIALIZED_END +} + + +/*---------------------------. +| Print this symbol on YYO. | +`---------------------------*/ + +static void +yy_symbol_print (FILE *yyo, + yysymbol_kind_t yykind, YYSTYPE const * const yyvaluep, yyscan_t yyscanner) +{ + YYFPRINTF (yyo, "%s %s (", + yykind < YYNTOKENS ? "token" : "nterm", yysymbol_name (yykind)); + + yy_symbol_value_print (yyo, yykind, yyvaluep, yyscanner); + YYFPRINTF (yyo, ")"); +} + +/*------------------------------------------------------------------. +| yy_stack_print -- Print the state stack from its BOTTOM up to its | +| TOP (included). | +`------------------------------------------------------------------*/ + +static void +yy_stack_print (yy_state_t *yybottom, yy_state_t *yytop) +{ + YYFPRINTF (stderr, "Stack now"); + for (; yybottom <= yytop; yybottom++) + { + int yybot = *yybottom; + YYFPRINTF (stderr, " %d", yybot); + } + 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. | +`------------------------------------------------*/ + +static void +yy_reduce_print (yy_state_t *yyssp, YYSTYPE *yyvsp, + int yyrule, yyscan_t yyscanner) +{ + int yylno = yyrline[yyrule]; + int yynrhs = yyr2[yyrule]; + int yyi; + YYFPRINTF (stderr, "Reducing stack by rule %d (line %d):\n", + yyrule - 1, yylno); + /* The symbols being reduced. */ + for (yyi = 0; yyi < yynrhs; yyi++) + { + YYFPRINTF (stderr, " $%d = ", yyi + 1); + yy_symbol_print (stderr, + YY_ACCESSING_SYMBOL (+yyssp[yyi + 1 - yynrhs]), + &yyvsp[(yyi + 1) - (yynrhs)], yyscanner); + YYFPRINTF (stderr, "\n"); + } +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (yyssp, yyvsp, Rule, yyscanner); \ +} while (0) + +/* Nonzero means print parse trace. It is left uninitialized so that + multiple parsers can coexist. */ +int yydebug; +#else /* !YYDEBUG */ +# define YYDPRINTF(Args) ((void) 0) +# define YY_SYMBOL_PRINT(Title, Kind, 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 + YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH) + evaluated with infinite-precision integer arithmetic. */ + +#ifndef YYMAXDEPTH +# define YYMAXDEPTH 10000 +#endif + + + + + + +/*-----------------------------------------------. +| Release the memory associated to this symbol. | +`-----------------------------------------------*/ + +static void +yydestruct (const char *yymsg, + yysymbol_kind_t yykind, YYSTYPE *yyvaluep, yyscan_t yyscanner) +{ + YY_USE (yyvaluep); + YY_USE (yyscanner); + if (!yymsg) + yymsg = "Deleting"; + YY_SYMBOL_PRINT (yymsg, yykind, yyvaluep, yylocationp); + + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + YY_USE (yykind); + YY_IGNORE_MAYBE_UNINITIALIZED_END +} + + + + + + +/*----------. +| yyparse. | +`----------*/ + +int +yyparse (yyscan_t yyscanner) +{ +/* Lookahead token kind. */ +int yychar; + + +/* The semantic value of the lookahead symbol. */ +/* Default value used for initialization, for pacifying older GCCs + or non-GCC compilers. */ +YY_INITIAL_VALUE (static YYSTYPE yyval_default;) +YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default); + + /* Number of syntax errors so far. */ + int yynerrs = 0; + + yy_state_fast_t yystate = 0; + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus = 0; + + /* Refer to the stacks through separate pointers, to allow yyoverflow + to reallocate them elsewhere. */ + + /* Their size. */ + YYPTRDIFF_T yystacksize = YYINITDEPTH; + + /* The state stack: array, bottom, top. */ + yy_state_t yyssa[YYINITDEPTH]; + yy_state_t *yyss = yyssa; + yy_state_t *yyssp = yyss; + + /* The semantic value stack: array, bottom, top. */ + YYSTYPE yyvsa[YYINITDEPTH]; + YYSTYPE *yyvs = yyvsa; + YYSTYPE *yyvsp = yyvs; + + int yyn; + /* The return value of yyparse. */ + int yyresult; + /* Lookahead symbol kind. */ + yysymbol_kind_t yytoken = YYSYMBOL_YYEMPTY; + /* The variables used to return semantic value and location from the + action routines. */ + YYSTYPE yyval; + + + +#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)) + + /* The number of symbols on the RHS of the reduced rule. + Keep to zero when no symbol should be popped. */ + int yylen = 0; + + YYDPRINTF ((stderr, "Starting parse\n")); + + yychar = YYEMPTY; /* Cause a token to be read. */ + 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 -- set current state (the top of the stack) to yystate. | +`--------------------------------------------------------------------*/ +yysetstate: + YYDPRINTF ((stderr, "Entering state %d\n", yystate)); + YY_ASSERT (0 <= yystate && yystate < YYNSTATES); + YY_IGNORE_USELESS_CAST_BEGIN + *yyssp = YY_CAST (yy_state_t, yystate); + YY_IGNORE_USELESS_CAST_END + YY_STACK_PRINT (yyss, yyssp); + + if (yyss + yystacksize - 1 <= yyssp) +#if !defined yyoverflow && !defined YYSTACK_RELOCATE + goto yyexhaustedlab; +#else + { + /* Get the current used size of the three stacks, in elements. */ + YYPTRDIFF_T yysize = yyssp - yyss + 1; + +# if defined 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. */ + yy_state_t *yyss1 = yyss; + YYSTYPE *yyvs1 = yyvs; + + /* 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 (YY_("memory exhausted"), + &yyss1, yysize * YYSIZEOF (*yyssp), + &yyvs1, yysize * YYSIZEOF (*yyvsp), + &yystacksize); + yyss = yyss1; + yyvs = yyvs1; + } +# else /* defined YYSTACK_RELOCATE */ + /* Extend the stack our own way. */ + if (YYMAXDEPTH <= yystacksize) + goto yyexhaustedlab; + yystacksize *= 2; + if (YYMAXDEPTH < yystacksize) + yystacksize = YYMAXDEPTH; + + { + yy_state_t *yyss1 = yyss; + union yyalloc *yyptr = + YY_CAST (union yyalloc *, + YYSTACK_ALLOC (YY_CAST (YYSIZE_T, YYSTACK_BYTES (yystacksize)))); + if (! yyptr) + goto yyexhaustedlab; + YYSTACK_RELOCATE (yyss_alloc, yyss); + YYSTACK_RELOCATE (yyvs_alloc, yyvs); +# undef YYSTACK_RELOCATE + if (yyss1 != yyssa) + YYSTACK_FREE (yyss1); + } +# endif + + yyssp = yyss + yysize - 1; + yyvsp = yyvs + yysize - 1; + + YY_IGNORE_USELESS_CAST_BEGIN + YYDPRINTF ((stderr, "Stack size increased to %ld\n", + YY_CAST (long, yystacksize))); + YY_IGNORE_USELESS_CAST_END + + if (yyss + yystacksize - 1 <= yyssp) + YYABORT; + } +#endif /* !defined yyoverflow && !defined YYSTACK_RELOCATE */ + + if (yystate == YYFINAL) + YYACCEPT; + + 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. */ + + /* First try to decide what to do without reference to lookahead token. */ + yyn = yypact[yystate]; + if (yypact_value_is_default (yyn)) + goto yydefault; + + /* Not known => get a lookahead token if don't already have one. */ + + /* YYCHAR is either empty, or end-of-input, or a valid lookahead. */ + if (yychar == YYEMPTY) + { + YYDPRINTF ((stderr, "Reading a token\n")); + yychar = yylex (&yylval, yyscanner); + } + + if (yychar <= YYEOF) + { + yychar = YYEOF; + yytoken = YYSYMBOL_YYEOF; + YYDPRINTF ((stderr, "Now at end of input.\n")); + } + else if (yychar == YYerror) + { + /* The scanner already issued an error message, process directly + to error recovery. But do not keep the error token as + lookahead, it is too special and may lead us to an endless + loop in error recovery. */ + yychar = YYUNDEF; + yytoken = YYSYMBOL_YYerror; + goto yyerrlab1; + } + else + { + yytoken = YYTRANSLATE (yychar); + YY_SYMBOL_PRINT ("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 (yytable_value_is_error (yyn)) + goto yyerrlab; + yyn = -yyn; + goto yyreduce; + } + + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; + + /* Shift the lookahead token. */ + YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); + yystate = yyn; + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + *++yyvsp = yylval; + YY_IGNORE_MAYBE_UNINITIALIZED_END + + /* Discard the shifted token. */ + yychar = YYEMPTY; + 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]; + + + YY_REDUCE_PRINT (yyn); + switch (yyn) + { + case 2: /* result: expr */ +#line 83 "exprparse.y" + { expr_parse_result = (yyvsp[0].expr); } +#line 1336 "exprparse.c" + break; + + case 3: /* elist: %empty */ +#line 85 "exprparse.y" + { (yyval.elist) = NULL; } +#line 1342 "exprparse.c" + break; + + case 4: /* elist: expr */ +#line 86 "exprparse.y" + { (yyval.elist) = make_elist((yyvsp[0].expr), NULL); } +#line 1348 "exprparse.c" + break; + + case 5: /* elist: elist ',' expr */ +#line 87 "exprparse.y" + { (yyval.elist) = make_elist((yyvsp[0].expr), (yyvsp[-2].elist)); } +#line 1354 "exprparse.c" + break; + + case 6: /* expr: '(' expr ')' */ +#line 90 "exprparse.y" + { (yyval.expr) = (yyvsp[-1].expr); } +#line 1360 "exprparse.c" + break; + + case 7: /* expr: '+' expr */ +#line 91 "exprparse.y" + { (yyval.expr) = (yyvsp[0].expr); } +#line 1366 "exprparse.c" + break; + + case 8: /* expr: '-' expr */ +#line 93 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "-", + make_integer_constant(0), (yyvsp[0].expr)); } +#line 1373 "exprparse.c" + break; + + case 9: /* expr: '-' MAXINT_PLUS_ONE_CONST */ +#line 97 "exprparse.y" + { (yyval.expr) = make_integer_constant(PG_INT64_MIN); } +#line 1379 "exprparse.c" + break; + + case 10: /* expr: '~' expr */ +#line 99 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "#", + make_integer_constant(~INT64CONST(0)), (yyvsp[0].expr)); } +#line 1386 "exprparse.c" + break; + + case 11: /* expr: NOT_OP expr */ +#line 101 "exprparse.y" + { (yyval.expr) = make_uop(yyscanner, "!not", (yyvsp[0].expr)); } +#line 1392 "exprparse.c" + break; + + case 12: /* expr: expr '+' expr */ +#line 102 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "+", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1398 "exprparse.c" + break; + + case 13: /* expr: expr '-' expr */ +#line 103 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "-", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1404 "exprparse.c" + break; + + case 14: /* expr: expr '*' expr */ +#line 104 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "*", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1410 "exprparse.c" + break; + + case 15: /* expr: expr '/' expr */ +#line 105 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "/", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1416 "exprparse.c" + break; + + case 16: /* expr: expr '%' expr */ +#line 106 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "mod", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1422 "exprparse.c" + break; + + case 17: /* expr: expr '<' expr */ +#line 107 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "<", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1428 "exprparse.c" + break; + + case 18: /* expr: expr LE_OP expr */ +#line 108 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "<=", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1434 "exprparse.c" + break; + + case 19: /* expr: expr '>' expr */ +#line 109 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "<", (yyvsp[0].expr), (yyvsp[-2].expr)); } +#line 1440 "exprparse.c" + break; + + case 20: /* expr: expr GE_OP expr */ +#line 110 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "<=", (yyvsp[0].expr), (yyvsp[-2].expr)); } +#line 1446 "exprparse.c" + break; + + case 21: /* expr: expr '=' expr */ +#line 111 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "=", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1452 "exprparse.c" + break; + + case 22: /* expr: expr NE_OP expr */ +#line 112 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "<>", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1458 "exprparse.c" + break; + + case 23: /* expr: expr '&' expr */ +#line 113 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "&", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1464 "exprparse.c" + break; + + case 24: /* expr: expr '|' expr */ +#line 114 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "|", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1470 "exprparse.c" + break; + + case 25: /* expr: expr '#' expr */ +#line 115 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "#", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1476 "exprparse.c" + break; + + case 26: /* expr: expr LS_OP expr */ +#line 116 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "<<", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1482 "exprparse.c" + break; + + case 27: /* expr: expr RS_OP expr */ +#line 117 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, ">>", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1488 "exprparse.c" + break; + + case 28: /* expr: expr AND_OP expr */ +#line 118 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "!and", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1494 "exprparse.c" + break; + + case 29: /* expr: expr OR_OP expr */ +#line 119 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "!or", (yyvsp[-2].expr), (yyvsp[0].expr)); } +#line 1500 "exprparse.c" + break; + + case 30: /* expr: expr ISNULL_OP */ +#line 121 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "!is", (yyvsp[-1].expr), make_null_constant()); } +#line 1506 "exprparse.c" + break; + + case 31: /* expr: expr NOTNULL_OP */ +#line 122 "exprparse.y" + { + (yyval.expr) = make_uop(yyscanner, "!not", + make_op(yyscanner, "!is", (yyvsp[-1].expr), make_null_constant())); + } +#line 1515 "exprparse.c" + break; + + case 32: /* expr: expr IS_OP NULL_CONST */ +#line 126 "exprparse.y" + { (yyval.expr) = make_op(yyscanner, "!is", (yyvsp[-2].expr), make_null_constant()); } +#line 1521 "exprparse.c" + break; + + case 33: /* expr: expr IS_OP NOT_OP NULL_CONST */ +#line 128 "exprparse.y" + { + (yyval.expr) = make_uop(yyscanner, "!not", + make_op(yyscanner, "!is", (yyvsp[-3].expr), make_null_constant())); + } +#line 1530 "exprparse.c" + break; + + case 34: /* expr: expr IS_OP BOOLEAN_CONST */ +#line 133 "exprparse.y" + { + (yyval.expr) = make_op(yyscanner, "!is", (yyvsp[-2].expr), make_boolean_constant((yyvsp[0].bval))); + } +#line 1538 "exprparse.c" + break; + + case 35: /* expr: expr IS_OP NOT_OP BOOLEAN_CONST */ +#line 137 "exprparse.y" + { + (yyval.expr) = make_uop(yyscanner, "!not", + make_op(yyscanner, "!is", (yyvsp[-3].expr), make_boolean_constant((yyvsp[0].bval)))); + } +#line 1547 "exprparse.c" + break; + + case 36: /* expr: NULL_CONST */ +#line 142 "exprparse.y" + { (yyval.expr) = make_null_constant(); } +#line 1553 "exprparse.c" + break; + + case 37: /* expr: BOOLEAN_CONST */ +#line 143 "exprparse.y" + { (yyval.expr) = make_boolean_constant((yyvsp[0].bval)); } +#line 1559 "exprparse.c" + break; + + case 38: /* expr: INTEGER_CONST */ +#line 144 "exprparse.y" + { (yyval.expr) = make_integer_constant((yyvsp[0].ival)); } +#line 1565 "exprparse.c" + break; + + case 39: /* expr: DOUBLE_CONST */ +#line 145 "exprparse.y" + { (yyval.expr) = make_double_constant((yyvsp[0].dval)); } +#line 1571 "exprparse.c" + break; + + case 40: /* expr: VARIABLE */ +#line 147 "exprparse.y" + { (yyval.expr) = make_variable((yyvsp[0].str)); } +#line 1577 "exprparse.c" + break; + + case 41: /* expr: function '(' elist ')' */ +#line 148 "exprparse.y" + { (yyval.expr) = make_func(yyscanner, (yyvsp[-3].ival), (yyvsp[-1].elist)); } +#line 1583 "exprparse.c" + break; + + case 42: /* expr: case_control */ +#line 149 "exprparse.y" + { (yyval.expr) = (yyvsp[0].expr); } +#line 1589 "exprparse.c" + break; + + case 43: /* when_then_list: when_then_list WHEN_KW expr THEN_KW expr */ +#line 153 "exprparse.y" + { (yyval.elist) = make_elist((yyvsp[0].expr), make_elist((yyvsp[-2].expr), (yyvsp[-4].elist))); } +#line 1595 "exprparse.c" + break; + + case 44: /* when_then_list: WHEN_KW expr THEN_KW expr */ +#line 154 "exprparse.y" + { (yyval.elist) = make_elist((yyvsp[0].expr), make_elist((yyvsp[-2].expr), NULL)); } +#line 1601 "exprparse.c" + break; + + case 45: /* case_control: CASE_KW when_then_list END_KW */ +#line 157 "exprparse.y" + { (yyval.expr) = make_case(yyscanner, (yyvsp[-1].elist), make_null_constant()); } +#line 1607 "exprparse.c" + break; + + case 46: /* case_control: CASE_KW when_then_list ELSE_KW expr END_KW */ +#line 158 "exprparse.y" + { (yyval.expr) = make_case(yyscanner, (yyvsp[-3].elist), (yyvsp[-1].expr)); } +#line 1613 "exprparse.c" + break; + + case 47: /* function: FUNCTION */ +#line 160 "exprparse.y" + { (yyval.ival) = find_func(yyscanner, (yyvsp[0].str)); pg_free((yyvsp[0].str)); } +#line 1619 "exprparse.c" + break; + + +#line 1623 "exprparse.c" + + default: break; + } + /* User semantic actions sometimes alter yychar, and that requires + that yytoken be updated with the new translation. We take the + approach of translating immediately before every use of yytoken. + One alternative is translating here after every semantic action, + but that translation would be missed if the semantic action invokes + YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or + if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an + incorrect destructor might then be invoked immediately. In the + case of YYERROR or YYBACKUP, subsequent parser actions might lead + to an incorrect destructor call or verbose syntax error message + before the lookahead is translated. */ + YY_SYMBOL_PRINT ("-> $$ =", YY_CAST (yysymbol_kind_t, yyr1[yyn]), &yyval, &yyloc); + + YYPOPSTACK (yylen); + yylen = 0; + + *++yyvsp = yyval; + + /* 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. */ + { + const int yylhs = yyr1[yyn] - YYNTOKENS; + const int yyi = yypgoto[yylhs] + *yyssp; + yystate = (0 <= yyi && yyi <= YYLAST && yycheck[yyi] == *yyssp + ? yytable[yyi] + : yydefgoto[yylhs]); + } + + goto yynewstate; + + +/*--------------------------------------. +| yyerrlab -- here on detecting error. | +`--------------------------------------*/ +yyerrlab: + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = yychar == YYEMPTY ? YYSYMBOL_YYEMPTY : YYTRANSLATE (yychar); + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus) + { + ++yynerrs; + yyerror (yyscanner, YY_("syntax error")); + } + + if (yyerrstatus == 3) + { + /* If just tried and failed to reuse lookahead token after an + error, discard it. */ + + if (yychar <= YYEOF) + { + /* Return failure if at end of input. */ + if (yychar == YYEOF) + YYABORT; + } + else + { + yydestruct ("Error: discarding", + yytoken, &yylval, yyscanner); + yychar = YYEMPTY; + } + } + + /* Else will try to reuse lookahead token after shifting the error + token. */ + goto yyerrlab1; + + +/*---------------------------------------------------. +| yyerrorlab -- error raised explicitly by YYERROR. | +`---------------------------------------------------*/ +yyerrorlab: + /* Pacify compilers when the user code never invokes YYERROR and the + label yyerrorlab therefore never appears in user code. */ + if (0) + YYERROR; + + /* Do not reclaim the symbols of the rule whose action triggered + this YYERROR. */ + YYPOPSTACK (yylen); + yylen = 0; + YY_STACK_PRINT (yyss, yyssp); + yystate = *yyssp; + goto yyerrlab1; + + +/*-------------------------------------------------------------. +| yyerrlab1 -- common code for both syntax error and YYERROR. | +`-------------------------------------------------------------*/ +yyerrlab1: + yyerrstatus = 3; /* Each real token shifted decrements this. */ + + /* Pop stack until we find a state that shifts the error token. */ + for (;;) + { + yyn = yypact[yystate]; + if (!yypact_value_is_default (yyn)) + { + yyn += YYSYMBOL_YYerror; + if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYSYMBOL_YYerror) + { + yyn = yytable[yyn]; + if (0 < yyn) + break; + } + } + + /* Pop the current state because it cannot handle the error token. */ + if (yyssp == yyss) + YYABORT; + + + yydestruct ("Error: popping", + YY_ACCESSING_SYMBOL (yystate), yyvsp, yyscanner); + YYPOPSTACK (1); + yystate = *yyssp; + YY_STACK_PRINT (yyss, yyssp); + } + + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + *++yyvsp = yylval; + YY_IGNORE_MAYBE_UNINITIALIZED_END + + + /* Shift the error token. */ + YY_SYMBOL_PRINT ("Shifting", YY_ACCESSING_SYMBOL (yyn), yyvsp, yylsp); + + yystate = yyn; + goto yynewstate; + + +/*-------------------------------------. +| yyacceptlab -- YYACCEPT comes here. | +`-------------------------------------*/ +yyacceptlab: + yyresult = 0; + goto yyreturn; + + +/*-----------------------------------. +| yyabortlab -- YYABORT comes here. | +`-----------------------------------*/ +yyabortlab: + yyresult = 1; + goto yyreturn; + + +#if !defined yyoverflow +/*-------------------------------------------------. +| yyexhaustedlab -- memory exhaustion comes here. | +`-------------------------------------------------*/ +yyexhaustedlab: + yyerror (yyscanner, YY_("memory exhausted")); + yyresult = 2; + goto yyreturn; +#endif + + +/*-------------------------------------------------------. +| yyreturn -- parsing is finished, clean up and return. | +`-------------------------------------------------------*/ +yyreturn: + if (yychar != YYEMPTY) + { + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = YYTRANSLATE (yychar); + yydestruct ("Cleanup: discarding lookahead", + yytoken, &yylval, yyscanner); + } + /* Do not reclaim the symbols of the rule whose action triggered + this YYABORT or YYACCEPT. */ + YYPOPSTACK (yylen); + YY_STACK_PRINT (yyss, yyssp); + while (yyssp != yyss) + { + yydestruct ("Cleanup: popping", + YY_ACCESSING_SYMBOL (+*yyssp), yyvsp, yyscanner); + YYPOPSTACK (1); + } +#ifndef yyoverflow + if (yyss != yyssa) + YYSTACK_FREE (yyss); +#endif + + return yyresult; +} + +#line 163 "exprparse.y" + + +static PgBenchExpr * +make_null_constant(void) +{ + PgBenchExpr *expr = pg_malloc(sizeof(PgBenchExpr)); + + expr->etype = ENODE_CONSTANT; + expr->u.constant.type = PGBT_NULL; + expr->u.constant.u.ival = 0; + return expr; +} + +static PgBenchExpr * +make_integer_constant(int64 ival) +{ + PgBenchExpr *expr = pg_malloc(sizeof(PgBenchExpr)); + + expr->etype = ENODE_CONSTANT; + expr->u.constant.type = PGBT_INT; + expr->u.constant.u.ival = ival; + return expr; +} + +static PgBenchExpr * +make_double_constant(double dval) +{ + PgBenchExpr *expr = pg_malloc(sizeof(PgBenchExpr)); + + expr->etype = ENODE_CONSTANT; + expr->u.constant.type = PGBT_DOUBLE; + expr->u.constant.u.dval = dval; + return expr; +} + +static PgBenchExpr * +make_boolean_constant(bool bval) +{ + PgBenchExpr *expr = pg_malloc(sizeof(PgBenchExpr)); + + expr->etype = ENODE_CONSTANT; + expr->u.constant.type = PGBT_BOOLEAN; + expr->u.constant.u.bval = bval; + return expr; +} + +static PgBenchExpr * +make_variable(char *varname) +{ + PgBenchExpr *expr = pg_malloc(sizeof(PgBenchExpr)); + + expr->etype = ENODE_VARIABLE; + expr->u.variable.varname = varname; + return expr; +} + +/* binary operators */ +static PgBenchExpr * +make_op(yyscan_t yyscanner, const char *operator, + PgBenchExpr *lexpr, PgBenchExpr *rexpr) +{ + return make_func(yyscanner, find_func(yyscanner, operator), + make_elist(rexpr, make_elist(lexpr, NULL))); +} + +/* unary operator */ +static PgBenchExpr * +make_uop(yyscan_t yyscanner, const char *operator, PgBenchExpr *expr) +{ + return make_func(yyscanner, find_func(yyscanner, operator), make_elist(expr, NULL)); +} + +/* + * List of available functions: + * - fname: function name, "!..." for special internal functions + * - nargs: number of arguments. Special cases: + * - PGBENCH_NARGS_VARIABLE is a special value for least & greatest + * meaning #args >= 1; + * - PGBENCH_NARGS_CASE is for the "CASE WHEN ..." function, which + * has #args >= 3 and odd; + * - PGBENCH_NARGS_HASH is for hash functions, which have one required + * and one optional argument; + * - tag: function identifier from PgBenchFunction enum + */ +static const struct +{ + const char *fname; + int nargs; + PgBenchFunction tag; +} PGBENCH_FUNCTIONS[] = +{ + /* parsed as operators, executed as functions */ + { + "+", 2, PGBENCH_ADD + }, + { + "-", 2, PGBENCH_SUB + }, + { + "*", 2, PGBENCH_MUL + }, + { + "/", 2, PGBENCH_DIV + }, + { + "mod", 2, PGBENCH_MOD + }, + /* actual functions */ + { + "abs", 1, PGBENCH_ABS + }, + { + "least", PGBENCH_NARGS_VARIABLE, PGBENCH_LEAST + }, + { + "greatest", PGBENCH_NARGS_VARIABLE, PGBENCH_GREATEST + }, + { + "debug", 1, PGBENCH_DEBUG + }, + { + "pi", 0, PGBENCH_PI + }, + { + "sqrt", 1, PGBENCH_SQRT + }, + { + "ln", 1, PGBENCH_LN + }, + { + "exp", 1, PGBENCH_EXP + }, + { + "int", 1, PGBENCH_INT + }, + { + "double", 1, PGBENCH_DOUBLE + }, + { + "random", 2, PGBENCH_RANDOM + }, + { + "random_gaussian", 3, PGBENCH_RANDOM_GAUSSIAN + }, + { + "random_exponential", 3, PGBENCH_RANDOM_EXPONENTIAL + }, + { + "random_zipfian", 3, PGBENCH_RANDOM_ZIPFIAN + }, + { + "pow", 2, PGBENCH_POW + }, + { + "power", 2, PGBENCH_POW + }, + /* logical operators */ + { + "!and", 2, PGBENCH_AND + }, + { + "!or", 2, PGBENCH_OR + }, + { + "!not", 1, PGBENCH_NOT + }, + /* bitwise integer operators */ + { + "&", 2, PGBENCH_BITAND + }, + { + "|", 2, PGBENCH_BITOR + }, + { + "#", 2, PGBENCH_BITXOR + }, + { + "<<", 2, PGBENCH_LSHIFT + }, + { + ">>", 2, PGBENCH_RSHIFT + }, + /* comparison operators */ + { + "=", 2, PGBENCH_EQ + }, + { + "<>", 2, PGBENCH_NE + }, + { + "<=", 2, PGBENCH_LE + }, + { + "<", 2, PGBENCH_LT + }, + { + "!is", 2, PGBENCH_IS + }, + /* "case when ... then ... else ... end" construction */ + { + "!case_end", PGBENCH_NARGS_CASE, PGBENCH_CASE + }, + { + "hash", PGBENCH_NARGS_HASH, PGBENCH_HASH_MURMUR2 + }, + { + "hash_murmur2", PGBENCH_NARGS_HASH, PGBENCH_HASH_MURMUR2 + }, + { + "hash_fnv1a", PGBENCH_NARGS_HASH, PGBENCH_HASH_FNV1A + }, + { + "permute", PGBENCH_NARGS_PERMUTE, PGBENCH_PERMUTE + }, + /* keep as last array element */ + { + NULL, 0, 0 + } +}; + +/* + * Find a function from its name + * + * return the index of the function from the PGBENCH_FUNCTIONS array + * or fail if the function is unknown. + */ +static int +find_func(yyscan_t yyscanner, const char *fname) +{ + int i = 0; + + while (PGBENCH_FUNCTIONS[i].fname) + { + if (pg_strcasecmp(fname, PGBENCH_FUNCTIONS[i].fname) == 0) + return i; + i++; + } + + expr_yyerror_more(yyscanner, "unexpected function name", fname); + + /* not reached */ + return -1; +} + +/* Expression linked list builder */ +static PgBenchExprList * +make_elist(PgBenchExpr *expr, PgBenchExprList *list) +{ + PgBenchExprLink *cons; + + if (list == NULL) + { + list = pg_malloc(sizeof(PgBenchExprList)); + list->head = NULL; + list->tail = NULL; + } + + cons = pg_malloc(sizeof(PgBenchExprLink)); + cons->expr = expr; + cons->next = NULL; + + if (list->head == NULL) + list->head = cons; + else + list->tail->next = cons; + + list->tail = cons; + + return list; +} + +/* Return the length of an expression list */ +static int +elist_length(PgBenchExprList *list) +{ + PgBenchExprLink *link = list != NULL ? list->head : NULL; + int len = 0; + + for (; link != NULL; link = link->next) + len++; + + return len; +} + +/* Build function call expression */ +static PgBenchExpr * +make_func(yyscan_t yyscanner, int fnumber, PgBenchExprList *args) +{ + int len = elist_length(args); + + PgBenchExpr *expr = pg_malloc(sizeof(PgBenchExpr)); + + Assert(fnumber >= 0); + + /* validate arguments number including few special cases */ + switch (PGBENCH_FUNCTIONS[fnumber].nargs) + { + /* check at least one arg for least & greatest */ + case PGBENCH_NARGS_VARIABLE: + if (len == 0) + expr_yyerror_more(yyscanner, "at least one argument expected", + PGBENCH_FUNCTIONS[fnumber].fname); + break; + + /* case (when ... then ...)+ (else ...)? end */ + case PGBENCH_NARGS_CASE: + /* 'else' branch is always present, but could be a NULL-constant */ + if (len < 3 || len % 2 != 1) + expr_yyerror_more(yyscanner, + "odd and >= 3 number of arguments expected", + "case control structure"); + break; + + /* hash functions with optional seed argument */ + case PGBENCH_NARGS_HASH: + if (len < 1 || len > 2) + expr_yyerror_more(yyscanner, "unexpected number of arguments", + PGBENCH_FUNCTIONS[fnumber].fname); + + if (len == 1) + { + PgBenchExpr *var = make_variable("default_seed"); + args = make_elist(var, args); + } + break; + + /* pseudorandom permutation function with optional seed argument */ + case PGBENCH_NARGS_PERMUTE: + if (len < 2 || len > 3) + expr_yyerror_more(yyscanner, "unexpected number of arguments", + PGBENCH_FUNCTIONS[fnumber].fname); + + if (len == 2) + { + PgBenchExpr *var = make_variable("default_seed"); + args = make_elist(var, args); + } + break; + + /* common case: positive arguments number */ + default: + Assert(PGBENCH_FUNCTIONS[fnumber].nargs >= 0); + + if (PGBENCH_FUNCTIONS[fnumber].nargs != len) + expr_yyerror_more(yyscanner, "unexpected number of arguments", + PGBENCH_FUNCTIONS[fnumber].fname); + } + + expr->etype = ENODE_FUNCTION; + expr->u.function.function = PGBENCH_FUNCTIONS[fnumber].tag; + + /* only the link is used, the head/tail is not useful anymore */ + expr->u.function.args = args != NULL ? args->head : NULL; + if (args) + pg_free(args); + + return expr; +} + +static PgBenchExpr * +make_case(yyscan_t yyscanner, PgBenchExprList *when_then_list, PgBenchExpr *else_part) +{ + return make_func(yyscanner, + find_func(yyscanner, "!case_end"), + make_elist(else_part, when_then_list)); +} + +/* + * exprscan.l is compiled as part of exprparse.y. Currently, this is + * unavoidable because exprparse does not create a .h file to export + * its token symbols. If these files ever grow large enough to be + * worth compiling separately, that could be fixed; but for now it + * seems like useless complication. + */ + +/* First, get rid of "#define yyscan_t" from pgbench.h */ +#undef yyscan_t +/* ... and the yylval macro, which flex will have its own definition for */ +#undef yylval + +#include "exprscan.c" |