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Diffstat (limited to 'src/cmd/rc/parse.c')
| -rw-r--r-- | src/cmd/rc/parse.c | 2059 |
1 files changed, 2059 insertions, 0 deletions
diff --git a/src/cmd/rc/parse.c b/src/cmd/rc/parse.c new file mode 100644 index 0000000..1b29d41 --- /dev/null +++ b/src/cmd/rc/parse.c @@ -0,0 +1,2059 @@ +/* A Bison parser, made by GNU Bison 3.8.2. */ + +/* 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 <https://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 30802 + +/* Bison version string. */ +#define YYBISON_VERSION "3.8.2" + +/* Skeleton name. */ +#define YYSKELETON_NAME "yacc.c" + +/* Pure parsers. */ +#define YYPURE 0 + +/* Push parsers. */ +#define YYPUSH 0 + +/* Pull parsers. */ +#define YYPULL 1 + + + + +/* First part of user prologue. */ +#line 7 "sys/cmd/rc/syntax.y" + + #include "rc.h" + + int yylex(void); + void yyerror(const char *); + +#line 78 "sys/cmd/rc/parse.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 + +#include "parse.h" +/* 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_Tfor = 3, /* Tfor */ + YYSYMBOL_Tin = 4, /* Tin */ + YYSYMBOL_Twhile = 5, /* Twhile */ + YYSYMBOL_Tif = 6, /* Tif */ + YYSYMBOL_Telse = 7, /* Telse */ + YYSYMBOL_Tswitch = 8, /* Tswitch */ + YYSYMBOL_Tcase = 9, /* Tcase */ + YYSYMBOL_Tcasebody = 10, /* Tcasebody */ + YYSYMBOL_Ttwiddle = 11, /* Ttwiddle */ + YYSYMBOL_Tbang = 12, /* Tbang */ + YYSYMBOL_Tsubshell = 13, /* Tsubshell */ + YYSYMBOL_Tfunc = 14, /* Tfunc */ + YYSYMBOL_Tredir = 15, /* Tredir */ + YYSYMBOL_Tdup = 16, /* Tdup */ + YYSYMBOL_Tpipe = 17, /* Tpipe */ + YYSYMBOL_Tindex = 18, /* Tindex */ + YYSYMBOL_Tbasic = 19, /* Tbasic */ + YYSYMBOL_Targs = 20, /* Targs */ + YYSYMBOL_Tword = 21, /* Tword */ + YYSYMBOL_Twords = 22, /* Twords */ + YYSYMBOL_Tparen = 23, /* Tparen */ + YYSYMBOL_Tblock = 24, /* Tblock */ + YYSYMBOL_25_ = 25, /* ')' */ + YYSYMBOL_Tandand = 26, /* Tandand */ + YYSYMBOL_Toror = 27, /* Toror */ + YYSYMBOL_28_n_ = 28, /* '\n' */ + YYSYMBOL_29_ = 29, /* '^' */ + YYSYMBOL_30_ = 30, /* '$' */ + YYSYMBOL_Tcount = 31, /* Tcount */ + YYSYMBOL_Tjoin = 32, /* Tjoin */ + YYSYMBOL_33_ = 33, /* '(' */ + YYSYMBOL_34_ = 34, /* '{' */ + YYSYMBOL_35_ = 35, /* '}' */ + YYSYMBOL_36_ = 36, /* ';' */ + YYSYMBOL_37_ = 37, /* '&' */ + YYSYMBOL_38_ = 38, /* '=' */ + YYSYMBOL_39_ = 39, /* '`' */ + YYSYMBOL_YYACCEPT = 40, /* $accept */ + YYSYMBOL_rc = 41, /* rc */ + YYSYMBOL_line = 42, /* line */ + YYSYMBOL_body = 43, /* body */ + YYSYMBOL_paren = 44, /* paren */ + YYSYMBOL_block = 45, /* block */ + YYSYMBOL_cmds = 46, /* cmds */ + YYSYMBOL_cmdsln = 47, /* cmdsln */ + YYSYMBOL_ifbody = 48, /* ifbody */ + YYSYMBOL_case = 49, /* case */ + YYSYMBOL_casebody = 50, /* casebody */ + YYSYMBOL_assign = 51, /* assign */ + YYSYMBOL_redir = 52, /* redir */ + YYSYMBOL_epilog = 53, /* epilog */ + YYSYMBOL_cmd = 54, /* cmd */ + YYSYMBOL_basic = 55, /* basic */ + YYSYMBOL_atom = 56, /* atom */ + YYSYMBOL_word = 57, /* word */ + YYSYMBOL_executable = 58, /* executable */ + YYSYMBOL_nonkeyword = 59, /* nonkeyword */ + YYSYMBOL_keyword = 60, /* keyword */ + YYSYMBOL_words = 61, /* words */ + YYSYMBOL_wordsnl = 62, /* wordsnl */ + YYSYMBOL_nl = 63 /* nl */ +}; +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_uint8 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 + +/* Suppress an incorrect diagnostic about yylval being uninitialized. */ +#if defined __GNUC__ && ! defined __ICC && 406 <= __GNUC__ * 100 + __GNUC_MINOR__ +# if __GNUC__ * 100 + __GNUC_MINOR__ < 407 +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"") +# else +# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"") \ + _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"") +# endif +# 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 1 + +/* 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 /* 1 */ + +#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 56 +/* YYLAST -- Last index in YYTABLE. */ +#define YYLAST 478 + +/* YYNTOKENS -- Number of terminals. */ +#define YYNTOKENS 40 +/* YYNNTS -- Number of nonterminals. */ +#define YYNNTS 24 +/* YYNRULES -- Number of rules. */ +#define YYNRULES 73 +/* YYNSTATES -- Number of states. */ +#define YYNSTATES 129 + +/* YYMAXUTOK -- Last valid token kind. */ +#define YYMAXUTOK 283 + + +/* 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, + 28, 2, 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, 2, + 33, 25, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 36, + 2, 38, 2, 2, 2, 2, 2, 2, 2, 2, + 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, 39, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 34, 2, 35, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 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, + 26, 27, 31, 32 +}; + +#if YYDEBUG +/* YYRLINE[YYN] -- Source line where rule number YYN was defined. */ +static const yytype_uint8 yyrline[] = +{ + 0, 38, 38, 39, 42, 43, 46, 47, 50, 53, + 56, 57, 60, 61, 64, 65, 68, 69, 72, 73, + 74, 77, 80, 81, 84, 85, 88, 89, 90, 91, + 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, + 102, 105, 106, 107, 110, 111, 114, 115, 118, 119, + 122, 123, 124, 125, 126, 127, 128, 132, 132, 132, + 132, 132, 132, 132, 132, 132, 132, 135, 136, 139, + 140, 141, 143, 145 +}; +#endif + +/** Accessing symbol of state STATE. */ +#define YY_ACCESSING_SYMBOL(State) YY_CAST (yysymbol_kind_t, yystos[State]) + +#if 1 +/* 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\"", "Tfor", "Tin", + "Twhile", "Tif", "Telse", "Tswitch", "Tcase", "Tcasebody", "Ttwiddle", + "Tbang", "Tsubshell", "Tfunc", "Tredir", "Tdup", "Tpipe", "Tindex", + "Tbasic", "Targs", "Tword", "Twords", "Tparen", "Tblock", "')'", + "Tandand", "Toror", "'\\n'", "'^'", "'$'", "Tcount", "Tjoin", "'('", + "'{'", "'}'", "';'", "'&'", "'='", "'`'", "$accept", "rc", "line", + "body", "paren", "block", "cmds", "cmdsln", "ifbody", "case", "casebody", + "assign", "redir", "epilog", "cmd", "basic", "atom", "word", + "executable", "nonkeyword", "keyword", "words", "wordsnl", "nl", YY_NULLPTR +}; + +static const char * +yysymbol_name (yysymbol_kind_t yysymbol) +{ + return yytname[yysymbol]; +} +#endif + +#define YYPACT_NINF (-82) + +#define yypact_value_is_default(Yyn) \ + ((Yyn) == YYPACT_NINF) + +#define YYTABLE_NINF (-3) + +#define yytable_value_is_error(Yyn) \ + 0 + +/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing + STATE-NUM. */ +static const yytype_int16 yypact[] = +{ + 121, -17, -2, -2, 5, 439, 439, 343, -82, -82, + 343, 343, 343, -82, 439, -23, 45, 32, 11, 439, + 439, 439, 13, 158, -14, -82, 343, 439, -82, -82, + 343, 30, 30, -82, -82, -82, -82, -82, -82, -82, + -82, -82, -82, -82, 34, -82, -82, 47, -82, -82, + 195, 41, -82, 439, 54, -82, -82, -82, 11, -82, + -82, 30, 30, -82, -82, -82, -82, -82, -82, 34, + 343, 343, 19, 44, 375, 375, 4, 343, -82, -82, + -82, 34, -82, -82, -82, -82, 375, 375, 375, -82, + 34, -82, -82, -82, -82, 29, 77, -82, 29, -82, + -82, 269, -82, 30, 30, 306, 375, -82, 25, -82, + 34, -82, 29, 375, 407, 375, 29, -82, 407, 407, + 48, 54, 29, 232, -82, -82, -82, -82, -82 +}; + +/* 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[] = +{ + 26, 0, 0, 0, 0, 26, 26, 0, 22, 50, + 0, 0, 0, 69, 26, 0, 0, 0, 24, 26, + 26, 26, 4, 27, 41, 48, 0, 26, 72, 72, + 0, 34, 35, 57, 58, 59, 60, 61, 62, 63, + 64, 65, 66, 46, 23, 44, 45, 51, 54, 55, + 0, 0, 12, 26, 6, 56, 1, 3, 24, 28, + 5, 33, 32, 72, 72, 72, 10, 11, 43, 42, + 0, 0, 0, 0, 26, 26, 0, 0, 67, 53, + 70, 71, 9, 7, 13, 25, 26, 26, 26, 49, + 21, 67, 72, 8, 73, 38, 24, 39, 14, 72, + 47, 0, 29, 30, 31, 0, 26, 72, 0, 52, + 68, 72, 36, 26, 26, 26, 15, 67, 26, 26, + 0, 18, 37, 0, 20, 19, 40, 17, 16 +}; + +/* YYPGOTO[NTERM-NUM]. */ +static const yytype_int8 yypgoto[] = +{ + -82, -82, 75, -19, 93, -11, 18, -52, -82, -82, + -21, -82, -1, 42, 0, -82, -9, 28, -82, 2, + -82, -81, -82, -22 +}; + +/* YYDEFGOTO[NTERM-NUM]. */ +static const yytype_int8 yydefgoto[] = +{ + 0, 16, 17, 51, 28, 18, 52, 53, 97, 119, + 120, 20, 21, 59, 54, 23, 43, 110, 24, 25, + 46, 101, 50, 74 +}; + +/* 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_int16 yytable[] = +{ + 22, 47, 48, 49, 55, 31, 32, 75, 73, 45, + 105, 14, 45, 45, 45, 70, 26, 58, 19, 22, + 61, 62, 68, 91, 71, 45, 7, 8, 45, 99, + 63, 27, 45, 77, 83, 44, 123, 19, 30, 64, + 65, 86, 87, 88, 92, 56, 63, 63, 77, 66, + 67, 69, 45, 94, 72, 64, 65, 58, 76, 114, + 57, 89, 118, 77, 96, 78, 118, 118, 100, 93, + 106, 63, 45, 45, 95, 98, 82, 108, 81, 45, + 64, 65, 84, 126, 107, 113, 102, 103, 104, 115, + 66, 67, 7, 8, 60, 58, 29, 124, 125, 90, + 85, 0, 0, 45, 0, 0, 112, 45, 0, 0, + 0, 0, 0, 116, 121, 122, 0, 0, 121, 121, + 0, -2, 0, 0, 1, 45, 2, 3, 0, 4, + 0, 0, 0, 5, 6, 0, 7, 8, 0, 0, + 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, + 0, 10, 11, 12, 13, 14, 0, 0, 0, 0, + 15, 33, 34, 35, 36, 37, 38, 39, 0, 0, + 40, 41, 42, 7, 8, 0, 0, 0, 0, 9, + 0, 0, 0, 0, 0, 0, 0, 0, 10, 11, + 12, 13, 0, 0, 0, 0, 0, 15, 33, 34, + 35, 36, 37, 38, 39, 0, 0, 40, 41, 42, + 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, + 79, 0, 0, 80, 0, 10, 11, 12, 13, 0, + 0, 0, 0, 0, 15, 33, 34, 35, 36, 37, + 38, 39, 0, 0, 40, 41, 42, 0, 0, 0, + 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, + 127, 0, 10, 11, 12, 13, 0, 0, 128, 0, + 0, 15, 33, 34, 35, 36, 37, 38, 39, 0, + 0, 40, 41, 42, 0, 0, 0, 0, 0, 0, + 9, 0, 0, 0, 109, 0, 0, 0, 0, 10, + 11, 12, 13, 0, 0, 0, 0, 0, 15, 33, + 34, 35, 36, 37, 38, 39, 0, 0, 40, 41, + 42, 0, 0, 0, 0, 0, 0, 9, 0, 0, + 0, 111, 0, 0, 0, 0, 10, 11, 12, 13, + 0, 0, 0, 0, 0, 15, 33, 34, 35, 36, + 37, 38, 39, 0, 0, 40, 41, 42, 0, 0, + 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, + 0, 0, 0, 10, 11, 12, 13, 0, 1, 0, + 2, 3, 15, 4, 0, 0, 0, 5, 6, 0, + 7, 8, 0, 0, 0, 0, 9, 0, 0, 0, + 0, 0, 0, 94, 0, 10, 11, 12, 13, 14, + 1, 0, 2, 3, 15, 4, 117, 0, 0, 5, + 6, 0, 7, 8, 0, 0, 0, 0, 9, 0, + 0, 0, 0, 0, 0, 0, 0, 10, 11, 12, + 13, 14, 1, 0, 2, 3, 15, 4, 0, 0, + 0, 5, 6, 0, 7, 8, 0, 0, 0, 0, + 9, 0, 0, 0, 0, 0, 0, 0, 0, 10, + 11, 12, 13, 14, 0, 0, 0, 0, 15 +}; + +static const yytype_int8 yycheck[] = +{ + 0, 10, 11, 12, 15, 5, 6, 29, 27, 7, + 91, 34, 10, 11, 12, 29, 33, 18, 0, 19, + 20, 21, 23, 4, 38, 23, 15, 16, 26, 25, + 17, 33, 30, 29, 53, 7, 117, 19, 33, 26, + 27, 63, 64, 65, 25, 0, 17, 17, 29, 36, + 37, 23, 50, 28, 26, 26, 27, 58, 30, 34, + 28, 70, 114, 29, 75, 18, 118, 119, 77, 25, + 92, 17, 70, 71, 74, 75, 35, 99, 50, 77, + 26, 27, 28, 35, 7, 107, 86, 87, 88, 111, + 36, 37, 15, 16, 19, 96, 3, 118, 119, 71, + 58, -1, -1, 101, -1, -1, 106, 105, -1, -1, + -1, -1, -1, 113, 114, 115, -1, -1, 118, 119, + -1, 0, -1, -1, 3, 123, 5, 6, -1, 8, + -1, -1, -1, 12, 13, -1, 15, 16, -1, -1, + -1, -1, 21, -1, -1, -1, -1, -1, -1, -1, + -1, 30, 31, 32, 33, 34, -1, -1, -1, -1, + 39, 3, 4, 5, 6, 7, 8, 9, -1, -1, + 12, 13, 14, 15, 16, -1, -1, -1, -1, 21, + -1, -1, -1, -1, -1, -1, -1, -1, 30, 31, + 32, 33, -1, -1, -1, -1, -1, 39, 3, 4, + 5, 6, 7, 8, 9, -1, -1, 12, 13, 14, + -1, -1, -1, -1, -1, -1, 21, -1, -1, -1, + 25, -1, -1, 28, -1, 30, 31, 32, 33, -1, + -1, -1, -1, -1, 39, 3, 4, 5, 6, 7, + 8, 9, -1, -1, 12, 13, 14, -1, -1, -1, + -1, -1, -1, 21, -1, -1, -1, -1, -1, -1, + 28, -1, 30, 31, 32, 33, -1, -1, 36, -1, + -1, 39, 3, 4, 5, 6, 7, 8, 9, -1, + -1, 12, 13, 14, -1, -1, -1, -1, -1, -1, + 21, -1, -1, -1, 25, -1, -1, -1, -1, 30, + 31, 32, 33, -1, -1, -1, -1, -1, 39, 3, + 4, 5, 6, 7, 8, 9, -1, -1, 12, 13, + 14, -1, -1, -1, -1, -1, -1, 21, -1, -1, + -1, 25, -1, -1, -1, -1, 30, 31, 32, 33, + -1, -1, -1, -1, -1, 39, 3, 4, 5, 6, + 7, 8, 9, -1, -1, 12, 13, 14, -1, -1, + -1, -1, -1, -1, 21, -1, -1, -1, -1, -1, + -1, -1, -1, 30, 31, 32, 33, -1, 3, -1, + 5, 6, 39, 8, -1, -1, -1, 12, 13, -1, + 15, 16, -1, -1, -1, -1, 21, -1, -1, -1, + -1, -1, -1, 28, -1, 30, 31, 32, 33, 34, + 3, -1, 5, 6, 39, 8, 9, -1, -1, 12, + 13, -1, 15, 16, -1, -1, -1, -1, 21, -1, + -1, -1, -1, -1, -1, -1, -1, 30, 31, 32, + 33, 34, 3, -1, 5, 6, 39, 8, -1, -1, + -1, 12, 13, -1, 15, 16, -1, -1, -1, -1, + 21, -1, -1, -1, -1, -1, -1, -1, -1, 30, + 31, 32, 33, 34, -1, -1, -1, -1, 39 +}; + +/* YYSTOS[STATE-NUM] -- The symbol kind of the accessing symbol of + state STATE-NUM. */ +static const yytype_int8 yystos[] = +{ + 0, 3, 5, 6, 8, 12, 13, 15, 16, 21, + 30, 31, 32, 33, 34, 39, 41, 42, 45, 46, + 51, 52, 54, 55, 58, 59, 33, 33, 44, 44, + 33, 54, 54, 3, 4, 5, 6, 7, 8, 9, + 12, 13, 14, 56, 57, 59, 60, 56, 56, 56, + 62, 43, 46, 47, 54, 45, 0, 28, 52, 53, + 42, 54, 54, 17, 26, 27, 36, 37, 52, 57, + 29, 38, 57, 43, 63, 63, 57, 29, 18, 25, + 28, 57, 35, 43, 28, 53, 63, 63, 63, 56, + 57, 4, 25, 25, 28, 54, 45, 48, 54, 25, + 56, 61, 54, 54, 54, 61, 63, 7, 63, 25, + 57, 25, 54, 63, 34, 63, 54, 9, 47, 49, + 50, 54, 54, 61, 50, 50, 35, 28, 36 +}; + +/* YYR1[RULE-NUM] -- Symbol kind of the left-hand side of rule RULE-NUM. */ +static const yytype_int8 yyr1[] = +{ + 0, 40, 41, 41, 42, 42, 43, 43, 44, 45, + 46, 46, 47, 47, 48, 48, 49, 49, 50, 50, + 50, 51, 52, 52, 53, 53, 54, 54, 54, 54, + 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, + 54, 55, 55, 55, 56, 56, 57, 57, 58, 58, + 59, 59, 59, 59, 59, 59, 59, 60, 60, 60, + 60, 60, 60, 60, 60, 60, 60, 61, 61, 62, + 62, 62, 63, 63 +}; + +/* YYR2[RULE-NUM] -- Number of symbols on the right-hand side of rule RULE-NUM. */ +static const yytype_int8 yyr2[] = +{ + 0, 2, 0, 2, 1, 2, 1, 2, 3, 3, + 2, 2, 1, 2, 1, 4, 3, 3, 1, 2, + 2, 3, 1, 2, 0, 2, 0, 1, 2, 4, + 4, 4, 2, 2, 2, 2, 6, 8, 4, 4, + 8, 1, 2, 2, 1, 1, 1, 3, 1, 3, + 1, 2, 5, 3, 2, 2, 2, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 0, 2, 0, + 2, 2, 0, 2 +}; + + +enum { YYENOMEM = -2 }; + +#define yyerrok (yyerrstatus = 0) +#define yyclearin (yychar = YYEMPTY) + +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab +#define YYERROR goto yyerrorlab +#define YYNOMEM goto yyexhaustedlab + + +#define YYRECOVERING() (!!yyerrstatus) + +#define YYBACKUP(Token, Value) \ + do \ + if (yychar == YYEMPTY) \ + { \ + yychar = (Token); \ + yylval = (Value); \ + YYPOPSTACK (yylen); \ + yystate = *yyssp; \ + goto yybackup; \ + } \ + else \ + { \ + yyerror (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) + + + + +# define YY_SYMBOL_PRINT(Title, Kind, Value, Location) \ +do { \ + if (yydebug) \ + { \ + YYFPRINTF (stderr, "%s ", Title); \ + yy_symbol_print (stderr, \ + Kind, Value); \ + 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) +{ + FILE *yyoutput = yyo; + YY_USE (yyoutput); + if (!yyvaluep) + return; + 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) +{ + YYFPRINTF (yyo, "%s %s (", + yykind < YYNTOKENS ? "token" : "nterm", yysymbol_name (yykind)); + + yy_symbol_value_print (yyo, yykind, yyvaluep); + 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) +{ + 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)]); + YYFPRINTF (stderr, "\n"); + } +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (yyssp, yyvsp, 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) ((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 + + +/* Context of a parse error. */ +typedef struct +{ + yy_state_t *yyssp; + yysymbol_kind_t yytoken; +} yypcontext_t; + +/* Put in YYARG at most YYARGN of the expected tokens given the + current YYCTX, and return the number of tokens stored in YYARG. If + YYARG is null, return the number of expected tokens (guaranteed to + be less than YYNTOKENS). Return YYENOMEM on memory exhaustion. + Return 0 if there are more than YYARGN expected tokens, yet fill + YYARG up to YYARGN. */ +static int +yypcontext_expected_tokens (const yypcontext_t *yyctx, + yysymbol_kind_t yyarg[], int yyargn) +{ + /* Actual size of YYARG. */ + int yycount = 0; + int yyn = yypact[+*yyctx->yyssp]; + if (!yypact_value_is_default (yyn)) + { + /* Start YYX at -YYN if negative to avoid negative indexes in + YYCHECK. In other words, skip the first -YYN actions for + this state because they are default actions. */ + int yyxbegin = yyn < 0 ? -yyn : 0; + /* Stay within bounds of both yycheck and yytname. */ + int yychecklim = YYLAST - yyn + 1; + int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; + int yyx; + for (yyx = yyxbegin; yyx < yyxend; ++yyx) + if (yycheck[yyx + yyn] == yyx && yyx != YYSYMBOL_YYerror + && !yytable_value_is_error (yytable[yyx + yyn])) + { + if (!yyarg) + ++yycount; + else if (yycount == yyargn) + return 0; + else + yyarg[yycount++] = YY_CAST (yysymbol_kind_t, yyx); + } + } + if (yyarg && yycount == 0 && 0 < yyargn) + yyarg[0] = YYSYMBOL_YYEMPTY; + return yycount; +} + + + + +#ifndef yystrlen +# if defined __GLIBC__ && defined _STRING_H +# define yystrlen(S) (YY_CAST (YYPTRDIFF_T, strlen (S))) +# else +/* Return the length of YYSTR. */ +static YYPTRDIFF_T +yystrlen (const char *yystr) +{ + YYPTRDIFF_T yylen; + for (yylen = 0; yystr[yylen]; yylen++) + continue; + return yylen; +} +# 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 * +yystpcpy (char *yydest, const char *yysrc) +{ + char *yyd = yydest; + const char *yys = yysrc; + + while ((*yyd++ = *yys++) != '\0') + continue; + + return yyd - 1; +} +# endif +#endif + +#ifndef yytnamerr +/* Copy to YYRES the contents of YYSTR after stripping away unnecessary + quotes and backslashes, so that it's suitable for yyerror. The + heuristic is that double-quoting is unnecessary unless the string + contains an apostrophe, a comma, or backslash (other than + backslash-backslash). YYSTR is taken from yytname. If YYRES is + null, do not copy; instead, return the length of what the result + would have been. */ +static YYPTRDIFF_T +yytnamerr (char *yyres, const char *yystr) +{ + if (*yystr == '"') + { + YYPTRDIFF_T yyn = 0; + char const *yyp = yystr; + for (;;) + switch (*++yyp) + { + case '\'': + case ',': + goto do_not_strip_quotes; + + case '\\': + if (*++yyp != '\\') + goto do_not_strip_quotes; + else + goto append; + + append: + default: + if (yyres) + yyres[yyn] = *yyp; + yyn++; + break; + + case '"': + if (yyres) + yyres[yyn] = '\0'; + return yyn; + } + do_not_strip_quotes: ; + } + + if (yyres) + return yystpcpy (yyres, yystr) - yyres; + else + return yystrlen (yystr); +} +#endif + + +static int +yy_syntax_error_arguments (const yypcontext_t *yyctx, + yysymbol_kind_t yyarg[], int yyargn) +{ + /* Actual size of YYARG. */ + int yycount = 0; + /* There are many possibilities here to consider: + - If this state is a consistent state with a default action, then + the only way this function was invoked is if the default action + is an error action. In that case, don't check for expected + tokens because there are none. + - The only way there can be no lookahead present (in yychar) is if + this state is a consistent state with a default action. Thus, + detecting the absence of a lookahead is sufficient to determine + that there is no unexpected or expected token to report. In that + case, just report a simple "syntax error". + - Don't assume there isn't a lookahead just because this state is a + consistent state with a default action. There might have been a + previous inconsistent state, consistent state with a non-default + action, or user semantic action that manipulated yychar. + - Of course, the expected token list depends on states to have + correct lookahead information, and it depends on the parser not + to perform extra reductions after fetching a lookahead from the + scanner and before detecting a syntax error. Thus, state merging + (from LALR or IELR) and default reductions corrupt the expected + token list. However, the list is correct for canonical LR with + one exception: it will still contain any token that will not be + accepted due to an error action in a later state. + */ + if (yyctx->yytoken != YYSYMBOL_YYEMPTY) + { + int yyn; + if (yyarg) + yyarg[yycount] = yyctx->yytoken; + ++yycount; + yyn = yypcontext_expected_tokens (yyctx, + yyarg ? yyarg + 1 : yyarg, yyargn - 1); + if (yyn == YYENOMEM) + return YYENOMEM; + else + yycount += yyn; + } + return yycount; +} + +/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message + about the unexpected token YYTOKEN for the state stack whose top is + YYSSP. + + Return 0 if *YYMSG was successfully written. Return -1 if *YYMSG is + not large enough to hold the message. In that case, also set + *YYMSG_ALLOC to the required number of bytes. Return YYENOMEM if the + required number of bytes is too large to store. */ +static int +yysyntax_error (YYPTRDIFF_T *yymsg_alloc, char **yymsg, + const yypcontext_t *yyctx) +{ + enum { YYARGS_MAX = 5 }; + /* Internationalized format string. */ + const char *yyformat = YY_NULLPTR; + /* Arguments of yyformat: reported tokens (one for the "unexpected", + one per "expected"). */ + yysymbol_kind_t yyarg[YYARGS_MAX]; + /* Cumulated lengths of YYARG. */ + YYPTRDIFF_T yysize = 0; + + /* Actual size of YYARG. */ + int yycount = yy_syntax_error_arguments (yyctx, yyarg, YYARGS_MAX); + if (yycount == YYENOMEM) + return YYENOMEM; + + switch (yycount) + { +#define YYCASE_(N, S) \ + case N: \ + yyformat = S; \ + break + default: /* Avoid compiler warnings. */ + YYCASE_(0, YY_("syntax error")); + YYCASE_(1, YY_("syntax error, unexpected %s")); + YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s")); + YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s")); + YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s")); + YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s")); +#undef YYCASE_ + } + + /* Compute error message size. Don't count the "%s"s, but reserve + room for the terminator. */ + yysize = yystrlen (yyformat) - 2 * yycount + 1; + { + int yyi; + for (yyi = 0; yyi < yycount; ++yyi) + { + YYPTRDIFF_T yysize1 + = yysize + yytnamerr (YY_NULLPTR, yytname[yyarg[yyi]]); + if (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM) + yysize = yysize1; + else + return YYENOMEM; + } + } + + if (*yymsg_alloc < yysize) + { + *yymsg_alloc = 2 * yysize; + if (! (yysize <= *yymsg_alloc + && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM)) + *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM; + return -1; + } + + /* Avoid sprintf, as that infringes on the user's name space. + Don't have undefined behavior even if the translation + produced a string with the wrong number of "%s"s. */ + { + char *yyp = *yymsg; + int yyi = 0; + while ((*yyp = *yyformat) != '\0') + if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount) + { + yyp += yytnamerr (yyp, yytname[yyarg[yyi++]]); + yyformat += 2; + } + else + { + ++yyp; + ++yyformat; + } + } + return 0; +} + + +/*-----------------------------------------------. +| Release the memory associated to this symbol. | +`-----------------------------------------------*/ + +static void +yydestruct (const char *yymsg, + yysymbol_kind_t yykind, YYSTYPE *yyvaluep) +{ + YY_USE (yyvaluep); + if (!yymsg) + yymsg = "Deleting"; + YY_SYMBOL_PRINT (yymsg, yykind, yyvaluep, yylocationp); + + YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN + YY_USE (yykind); + YY_IGNORE_MAYBE_UNINITIALIZED_END +} + + +/* Lookahead token kind. */ +int yychar; + +/* The semantic value of the lookahead symbol. */ +YYSTYPE yylval; +/* Number of syntax errors so far. */ +int yynerrs; + + + + +/*----------. +| yyparse. | +`----------*/ + +int +yyparse (void) +{ + 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; + + /* Buffer for error messages, and its allocated size. */ + char yymsgbuf[128]; + char *yymsg = yymsgbuf; + YYPTRDIFF_T yymsg_alloc = sizeof yymsgbuf; + +#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 + YYNOMEM; +#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) + YYNOMEM; + 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) + YYNOMEM; + 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 (); + } + + 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: /* rc: %empty */ +#line 38 "sys/cmd/rc/syntax.y" + { return 0; } +#line 1549 "sys/cmd/rc/parse.c" + break; + + case 3: /* rc: line '\n' */ +#line 39 "sys/cmd/rc/syntax.y" + { return compile((yyvsp[-1].tree)); } +#line 1555 "sys/cmd/rc/parse.c" + break; + + case 5: /* line: cmds line */ +#line 43 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(';', (yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1561 "sys/cmd/rc/parse.c" + break; + + case 7: /* body: cmdsln body */ +#line 47 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(';', (yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1567 "sys/cmd/rc/parse.c" + break; + + case 8: /* paren: '(' body ')' */ +#line 50 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tparen, (yyvsp[-1].tree)); } +#line 1573 "sys/cmd/rc/parse.c" + break; + + case 9: /* block: '{' body '}' */ +#line 53 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tblock, (yyvsp[-1].tree)); } +#line 1579 "sys/cmd/rc/parse.c" + break; + + case 11: /* cmds: cmd '&' */ +#line 57 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1('&', (yyvsp[-1].tree)); } +#line 1585 "sys/cmd/rc/parse.c" + break; + + case 14: /* ifbody: cmd */ +#line 64 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Tif, nil, (yyvsp[0].tree)); } +#line 1591 "sys/cmd/rc/parse.c" + break; + + case 15: /* ifbody: block Telse nl cmd */ +#line 65 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree3(Tif, nil, (yyvsp[-3].tree), (yyvsp[-2].tree)); } +#line 1597 "sys/cmd/rc/parse.c" + break; + + case 16: /* case: Tcase words ';' */ +#line 68 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild1((yyvsp[-2].tree), (yyvsp[-1].tree), 0); } +#line 1603 "sys/cmd/rc/parse.c" + break; + + case 17: /* case: Tcase words '\n' */ +#line 69 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild1((yyvsp[-2].tree), (yyvsp[-1].tree), 0); } +#line 1609 "sys/cmd/rc/parse.c" + break; + + case 18: /* casebody: cmd */ +#line 72 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Tcasebody, (yyvsp[0].tree), nil); } +#line 1615 "sys/cmd/rc/parse.c" + break; + + case 19: /* casebody: case casebody */ +#line 73 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Tcasebody, (yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1621 "sys/cmd/rc/parse.c" + break; + + case 20: /* casebody: cmdsln casebody */ +#line 74 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Tcasebody, (yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1627 "sys/cmd/rc/parse.c" + break; + + case 21: /* assign: executable '=' word */ +#line 77 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2('=', (yyvsp[-2].tree), (yyvsp[0].tree)); } +#line 1633 "sys/cmd/rc/parse.c" + break; + + case 23: /* redir: Tredir word */ +#line 81 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild1((yyvsp[-1].tree), (yyvsp[0].tree), 0); } +#line 1639 "sys/cmd/rc/parse.c" + break; + + case 24: /* epilog: %empty */ +#line 84 "sys/cmd/rc/syntax.y" + { (yyval.tree) = nil; } +#line 1645 "sys/cmd/rc/parse.c" + break; + + case 25: /* epilog: redir epilog */ +#line 85 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild1((yyvsp[-1].tree), (yyvsp[0].tree), 1); } +#line 1651 "sys/cmd/rc/parse.c" + break; + + case 26: /* cmd: %empty */ +#line 88 "sys/cmd/rc/syntax.y" + { (yyval.tree) = nil; } +#line 1657 "sys/cmd/rc/parse.c" + break; + + case 27: /* cmd: basic */ +#line 89 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tbasic, (yyvsp[0].tree)); } +#line 1663 "sys/cmd/rc/parse.c" + break; + + case 28: /* cmd: block epilog */ +#line 90 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangepilog((yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1669 "sys/cmd/rc/parse.c" + break; + + case 29: /* cmd: cmd Tpipe nl cmd */ +#line 91 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild2((yyvsp[-2].tree), (yyvsp[-3].tree), 0, (yyvsp[0].tree), 1); } +#line 1675 "sys/cmd/rc/parse.c" + break; + + case 30: /* cmd: cmd Tandand nl cmd */ +#line 92 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Tandand, (yyvsp[-3].tree), (yyvsp[0].tree)); } +#line 1681 "sys/cmd/rc/parse.c" + break; + + case 31: /* cmd: cmd Toror nl cmd */ +#line 93 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Toror, (yyvsp[-3].tree), (yyvsp[0].tree)); } +#line 1687 "sys/cmd/rc/parse.c" + break; + + case 32: /* cmd: redir cmd */ +#line 94 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild1((yyvsp[-1].tree), (yyvsp[0].tree), 1); } +#line 1693 "sys/cmd/rc/parse.c" + break; + + case 33: /* cmd: assign cmd */ +#line 95 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild1((yyvsp[-1].tree), (yyvsp[0].tree), 2); } +#line 1699 "sys/cmd/rc/parse.c" + break; + + case 34: /* cmd: Tbang cmd */ +#line 96 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tbang, (yyvsp[0].tree)); } +#line 1705 "sys/cmd/rc/parse.c" + break; + + case 35: /* cmd: Tsubshell cmd */ +#line 97 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tsubshell, (yyvsp[0].tree)); } +#line 1711 "sys/cmd/rc/parse.c" + break; + + case 36: /* cmd: Tfor '(' word ')' nl cmd */ +#line 98 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild3((yyvsp[-5].tree), (yyvsp[-3].tree), nil, (yyvsp[0].tree)); } +#line 1717 "sys/cmd/rc/parse.c" + break; + + case 37: /* cmd: Tfor '(' word Tin words ')' nl cmd */ +#line 99 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild3((yyvsp[-7].tree), (yyvsp[-5].tree), (yyvsp[-3].tree), (yyvsp[0].tree)); } +#line 1723 "sys/cmd/rc/parse.c" + break; + + case 38: /* cmd: Twhile paren nl cmd */ +#line 100 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild2((yyvsp[-3].tree), (yyvsp[-2].tree), 0, (yyvsp[0].tree), 1); } +#line 1729 "sys/cmd/rc/parse.c" + break; + + case 39: /* cmd: Tif paren nl ifbody */ +#line 101 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild1((yyvsp[-2].tree), (yyvsp[-3].tree), 0); } +#line 1735 "sys/cmd/rc/parse.c" + break; + + case 40: /* cmd: Tswitch '(' word ')' nl '{' casebody '}' */ +#line 102 "sys/cmd/rc/syntax.y" + { (yyval.tree) = hangchild2((yyvsp[-7].tree), (yyvsp[-5].tree), 0, (yyvsp[-1].tree), 1); } +#line 1741 "sys/cmd/rc/parse.c" + break; + + case 42: /* basic: basic word */ +#line 106 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Targs, (yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1747 "sys/cmd/rc/parse.c" + break; + + case 43: /* basic: basic redir */ +#line 107 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Targs, (yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1753 "sys/cmd/rc/parse.c" + break; + + case 45: /* atom: keyword */ +#line 111 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tword, (yyvsp[0].tree)); } +#line 1759 "sys/cmd/rc/parse.c" + break; + + case 47: /* word: word '^' atom */ +#line 115 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2('^', (yyvsp[-2].tree), (yyvsp[0].tree)); } +#line 1765 "sys/cmd/rc/parse.c" + break; + + case 49: /* executable: executable '^' atom */ +#line 119 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2('^', (yyvsp[-2].tree), (yyvsp[0].tree)); } +#line 1771 "sys/cmd/rc/parse.c" + break; + + case 51: /* nonkeyword: '$' atom */ +#line 123 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1('$', (yyvsp[0].tree)); } +#line 1777 "sys/cmd/rc/parse.c" + break; + + case 52: /* nonkeyword: '$' atom Tindex words ')' */ +#line 124 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Tindex, (yyvsp[-3].tree), (yyvsp[-1].tree)); } +#line 1783 "sys/cmd/rc/parse.c" + break; + + case 53: /* nonkeyword: '(' wordsnl ')' */ +#line 125 "sys/cmd/rc/syntax.y" + { (yyval.tree) = (yyvsp[-1].tree); } +#line 1789 "sys/cmd/rc/parse.c" + break; + + case 54: /* nonkeyword: Tcount atom */ +#line 126 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tcount, (yyvsp[0].tree)); } +#line 1795 "sys/cmd/rc/parse.c" + break; + + case 55: /* nonkeyword: Tjoin atom */ +#line 127 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1(Tjoin, (yyvsp[0].tree)); } +#line 1801 "sys/cmd/rc/parse.c" + break; + + case 56: /* nonkeyword: '`' block */ +#line 128 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree1('`', (yyvsp[0].tree)); } +#line 1807 "sys/cmd/rc/parse.c" + break; + + case 67: /* words: %empty */ +#line 135 "sys/cmd/rc/syntax.y" + { (yyval.tree) = nil; } +#line 1813 "sys/cmd/rc/parse.c" + break; + + case 68: /* words: words word */ +#line 136 "sys/cmd/rc/syntax.y" + { (yyval.tree) = maketree2(Twords, (yyvsp[-1].tree), (yyvsp[0].tree)); } +#line 1819 "sys/cmd/rc/parse.c" + break; + + case 69: /* wordsnl: %empty */ +#line 139 "sys/cmd/rc/syntax.y" + { (yyval.tree) = nil; } +#line 1825 "sys/cmd/rc/parse.c" + break; + + case 71: /* wordsnl: wordsnl word */ +#line 141 "sys/cmd/rc/syntax.y" + {(yyval.tree) = (!(yyvsp[-1].tree)) ? ((!(yyvsp[0].tree)) ? nil : (yyvsp[0].tree)) : ((!(yyvsp[0].tree)) ? (yyvsp[-1].tree) : maketree2(Twords, (yyvsp[-1].tree), (yyvsp[0].tree))); } +#line 1831 "sys/cmd/rc/parse.c" + break; + + +#line 1835 "sys/cmd/rc/parse.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; + { + yypcontext_t yyctx + = {yyssp, yytoken}; + char const *yymsgp = YY_("syntax error"); + int yysyntax_error_status; + yysyntax_error_status = yysyntax_error (&yymsg_alloc, &yymsg, &yyctx); + if (yysyntax_error_status == 0) + yymsgp = yymsg; + else if (yysyntax_error_status == -1) + { + if (yymsg != yymsgbuf) + YYSTACK_FREE (yymsg); + yymsg = YY_CAST (char *, + YYSTACK_ALLOC (YY_CAST (YYSIZE_T, yymsg_alloc))); + if (yymsg) + { + yysyntax_error_status + = yysyntax_error (&yymsg_alloc, &yymsg, &yyctx); + yymsgp = yymsg; + } + else + { + yymsg = yymsgbuf; + yymsg_alloc = sizeof yymsgbuf; + yysyntax_error_status = YYENOMEM; + } + } + yyerror (yymsgp); + if (yysyntax_error_status == YYENOMEM) + YYNOMEM; + } + } + + 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); + 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; + ++yynerrs; + + /* 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); + 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 yyreturnlab; + + +/*-----------------------------------. +| yyabortlab -- YYABORT comes here. | +`-----------------------------------*/ +yyabortlab: + yyresult = 1; + goto yyreturnlab; + + +/*-----------------------------------------------------------. +| yyexhaustedlab -- YYNOMEM (memory exhaustion) comes here. | +`-----------------------------------------------------------*/ +yyexhaustedlab: + yyerror (YY_("memory exhausted")); + yyresult = 2; + goto yyreturnlab; + + +/*----------------------------------------------------------. +| yyreturnlab -- parsing is finished, clean up and return. | +`----------------------------------------------------------*/ +yyreturnlab: + 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); + } + /* 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); + YYPOPSTACK (1); + } +#ifndef yyoverflow + if (yyss != yyssa) + YYSTACK_FREE (yyss); +#endif + if (yymsg != yymsgbuf) + YYSTACK_FREE (yymsg); + return yyresult; +} + +#line 147 "sys/cmd/rc/syntax.y" + |