X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/782a05f9de1bad15438e7e64f163269308cc0f06..b50d2359d7608270561abd5c3cbf6e84834c2019:/data/glr.c diff --git a/data/glr.c b/data/glr.c index 14185cf7..0f466131 100644 --- a/data/glr.c +++ b/data/glr.c @@ -1,8 +1,7 @@ m4_divert(-1) -*- C -*- -m4_include([c.m4]) # GLR skeleton for Bison -# Copyright (C) 2002 Free Software Foundation, Inc. +# Copyright (C) 2002, 2003, 2004, 2005 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 @@ -16,8 +15,8 @@ m4_include([c.m4]) # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA -# 02111-1307 USA +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +# 02110-1301 USA ## ---------------- ## @@ -28,9 +27,15 @@ m4_include([c.m4]) m4_define_default([b4_stack_depth_max], [10000]) m4_define_default([b4_stack_depth_init], [200]) -# Location type. -m4_define_default([b4_location_type], [yyltype]) + +## ------------------------ ## +## Pure/impure interfaces. ## +## ------------------------ ## + + +# b4_lex_param +# ------------ # Accumule in b4_lex_param all the yylex arguments. # Yes, this is quite ugly... m4_define([b4_lex_param], @@ -38,13 +43,56 @@ m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[yylvalp]]][]dnl b4_location_if([, [[YYLTYPE *], [yyllocp]]])])dnl m4_ifdef([b4_lex_param], [, ]b4_lex_param))) -# Yes, this is quite ugly... - m4_define_default([b4_parse_param]) -m4_ifdef([b4_parse_param], -[m4_define([b4_parse_param], - b4_parse_param)]) + +# b4_user_formals +# --------------- +m4_define([b4_user_formals], +[m4_ifset([b4_parse_param], [, b4_c_ansi_formals(b4_parse_param)])]) + + +# b4_yyerror_args +# --------------- +# Arguments passed to yyerror: user args plus yylloc. +m4_define([b4_yyerror_args], +[b4_pure_if([b4_location_if([yylocp, ])])dnl +m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])]) + + +# b4_lyyerror_args +# ---------------- +# Same as above, but on the look-ahead, hence yyllocp instead of yylocp. +m4_define([b4_lyyerror_args], +[b4_pure_if([b4_location_if([yyllocp, ])])dnl +m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])]) +# b4_pure_args +# ------------ +# Arguments needed by yyerror: user args plus yylloc. +m4_define([b4_pure_args], +[b4_pure_if([b4_location_if([, yylocp])])[]b4_user_args]) + + +# b4_pure_formals +# --------------- +# Arguments passed to yyerror: user formals plus yyllocp. +m4_define([b4_pure_formals], +[b4_pure_if([b4_location_if([, YYLTYPE *yylocp])])[]b4_user_formals]) + + +# b4_lpure_args +# ------------- +# Same as above, but on the look-ahead, hence yyllocp instead of yylocp. +m4_define([b4_lpure_args], +[b4_pure_if([b4_location_if([, yyllocp])])[]b4_user_args]) + + +# b4_lpure_formals +# ---------------- +# Same as above, but on the look-ahead, hence yyllocp instead of yylocp. +m4_define([b4_lpure_formals], +[b4_pure_if([b4_location_if([YYLTYPE *yyllocp])])[]b4_user_formals]) + ## ----------------- ## ## Semantic Values. ## @@ -55,7 +103,7 @@ m4_ifdef([b4_parse_param], # -------------------- # Expansion of $$. m4_define([b4_lhs_value], -[(*yyvalp)[]m4_ifval([$1], [.$1])]) +[((*yyvalp)[]m4_ifval([$1], [.$1]))]) # b4_rhs_value(RULE-LENGTH, NUM, [TYPE]) @@ -63,7 +111,7 @@ m4_define([b4_lhs_value], # Expansion of $NUM, where the current rule has RULE-LENGTH # symbols on RHS. m4_define([b4_rhs_value], -[yyvsp@<:@m4_eval([$2 - $1])@:>@.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3])]) +[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))]) @@ -83,62 +131,20 @@ m4_define([b4_lhs_location], # Expansion of @NUM, where the current rule has RULE-LENGTH symbols # on RHS. m4_define([b4_rhs_location], -[yyvsp@<:@m4_eval([$2 - $1])@:>@.yystate.yyloc]) - - - -## ------------------- ## -## Output file names. ## -## ------------------- ## - -m4_define_default([b4_input_suffix], [.y]) - -m4_define_default([b4_output_parser_suffix], -[m4_translit(b4_input_suffix, [yY], [cC])]) - -m4_define_default([b4_output_parser_name], -[b4_output_prefix[]b4_output_infix[]b4_output_parser_suffix[]]) - - -m4_define_default([b4_output_header_suffix], -[m4_translit(b4_input_suffix, [yY], [hH])]) - -m4_define_default([b4_output_header_name], -[b4_output_prefix[]b4_output_infix[]b4_output_header_suffix[]]) - -m4_define_default([b4_header_guard], - [m4_bpatsubst(m4_toupper([BISON_]b4_output_header_name), - [[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]], [_])]) - +[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yyloc)]) # We do want M4 expansion after # for CPP macros. m4_changecom() m4_divert(0)dnl -#output "b4_output_parser_name" -b4_copyright([Skeleton parser for GLR parsing with Bison], [2002]) +@output @output_parser_name@ +b4_copyright([Skeleton parser for GLR parsing with Bison], + [2002, 2003, 2004, 2005]) [ /* This is the parser code for GLR (Generalized LR) parser. */ -/* FIXME: minimize these */ -#include -#include -#include -#include -#include -#include - -/* Identify Bison output. */ -#define YYBISON 1 - -/* Pure parsers. */ -#define YYPURE ]b4_pure[ - -/* Using locations. */ -#define YYLSP_NEEDED ]b4_locations_flag[ - -]m4_if(b4_prefix[], [yy], [], -[/* If NAME_PREFIX is specified substitute the variables and functions - names. */ +]b4_identification +m4_if(b4_prefix[], [yy], [], +[/* Substitute the variable and function names. */ #define yyparse b4_prefix[]parse #define yylex b4_prefix[]lex #define yyerror b4_prefix[]error @@ -146,9 +152,9 @@ b4_copyright([Skeleton parser for GLR parsing with Bison], [2002]) #define yychar b4_prefix[]char #define yydebug b4_prefix[]debug #define yynerrs b4_prefix[]nerrs -b4_location_if([#define yylloc b4_prefix[]lloc])]) +#define yylloc b4_prefix[]lloc]) -b4_token_defines(b4_tokens) +b4_token_enums(b4_tokens) /* Copy the first part of user declarations. */ b4_pre_prologue[ @@ -166,47 +172,93 @@ b4_pre_prologue[ # define YYERROR_VERBOSE ]b4_error_verbose[ #endif -#ifndef YYSTYPE +/* Enabling the token table. */ +#ifndef YYTOKEN_TABLE +# define YYTOKEN_TABLE ]b4_token_table[ +#endif + +#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) ]m4_ifdef([b4_stype], -[#line b4_stype_line "b4_filename" -typedef union b4_stype yystype; -/* Line __line__ of __file__. */ -#line __oline__ "__ofile__"], -[typedef int yystype;])[ -# define YYSTYPE yystype +[b4_syncline([b4_stype_line], [b4_file_name]) +typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE; +/* Line __line__ of glr.c. */ +b4_syncline([@oline@], [@ofile@])], +[typedef int YYSTYPE;])[ +# define YYSTYPE_IS_DECLARED 1 # define YYSTYPE_IS_TRIVIAL 1 #endif -#ifndef YYLTYPE -typedef struct yyltype +#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED) +typedef struct YYLTYPE { +]b4_location_if([ int first_line; int first_column; int last_line; int last_column; -} yyltype; -# define YYLTYPE ]b4_location_type[ +],[ + char yydummy; +])[ +} YYLTYPE; +# define YYLTYPE_IS_DECLARED 1 # define YYLTYPE_IS_TRIVIAL 1 #endif -/* Default (constant) values used for initialization for null - right-hand sides. Unlike the standard bison.simple template, - here we set the default values of the $$ and $@ to zeroed-out - values. Since the default value of these quantities is undefined, - this behavior is technically correct. */ +/* Default (constant) value used for initialization for null + right-hand sides. Unlike the standard yacc.c template, + here we set the default value of $$ to a zeroed-out value. + Since the default value is undefined, this behavior is + technically correct. */ static YYSTYPE yyval_default; -static YYLTYPE yyloc_default; /* Copy the second part of user declarations. */ ]b4_post_prologue[ -]/* Line __line__ of __file__. */ -#line __oline__ "__ofile__" +]/* Line __line__ of glr.c. */ +b4_syncline([@oline@], [@ofile@]) [ -#if ! defined (__cplusplus) - typedef char bool; -# define yytrue 1 -# define yyfalse 0 +#include +#include +#include +#include + +#ifndef YY_ +# if YYENABLE_NLS +# if ENABLE_NLS +# include /* INFRINGES ON USER NAME SPACE */ +# define YY_(msgid) dgettext ("bison-runtime", msgid) +# endif +# endif +# ifndef YY_ +# define YY_(msgid) msgid +# endif +#endif + +#ifndef YYFREE +# define YYFREE free +#endif +#ifndef YYMALLOC +# define YYMALLOC malloc +#endif +#ifndef YYREALLOC +# define YYREALLOC realloc +#endif + +#define YYSIZEMAX ((size_t) -1) + +#ifdef __cplusplus + typedef bool yybool; +#else + typedef unsigned char yybool; +#endif +#define yytrue 1 +#define yyfalse 0 + +#ifndef YYSETJMP +# include +# define YYJMP_BUF jmp_buf +# define YYSETJMP(env) setjmp (env) +# define YYLONGJMP(env, val) longjmp (env, val) #endif /*-----------------. @@ -215,18 +267,21 @@ static YYLTYPE yyloc_default; #ifndef __attribute__ /* This feature is available in gcc versions 2.5 and later. */ -# if !defined (__GNUC__) || __GNUC__ < 2 || \ -(__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ +# if (!defined (__GNUC__) || __GNUC__ < 2 \ + || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__) # define __attribute__(Spec) /* empty */ # endif #endif -#ifndef ATTRIBUTE_UNUSED -# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) -#endif +]b4_location_if([#define YYOPTIONAL_LOC(Name) Name],[ +#ifdef __cplusplus +# define YYOPTIONAL_LOC(Name) /* empty */ +#else +# define YYOPTIONAL_LOC(Name) Name __attribute__ ((__unused__)) +#endif])[ -#if ! defined (__GNUC__) -# define inline +#ifndef YYASSERT +# define YYASSERT(condition) ((void) ((condition) || (abort (), 0))) #endif /* YYFINAL -- State number of the termination state. */ @@ -244,13 +299,17 @@ static YYLTYPE yyloc_default; #define YYNSTATES ]b4_states_number[ /* YYMAXRHS -- Maximum number of symbols on right-hand side of rule. */ #define YYMAXRHS ]b4_r2_max[ +/* YYMAXLEFT -- Maximum number of symbols to the left of a handle + accessed by $0, $-1, etc., in any rule. */ +#define YYMAXLEFT ]b4_max_left_semantic_context[ /* YYTRANSLATE(X) -- Bison symbol number corresponding to X. */ #define YYUNDEFTOK ]b4_undef_token_number[ #define YYMAXUTOK ]b4_user_token_number_max[ -#define YYTRANSLATE(YYX) \ - ((unsigned)(YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) +#define YYTRANSLATE(YYX) \ + ((YYX <= 0) ? YYEOF : \ + (unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) /* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */ static const ]b4_int_type_for([b4_translate])[ yytranslate[] = @@ -279,15 +338,13 @@ static const ]b4_int_type_for([b4_rline])[ yyrline[] = }; #endif -#if (YYDEBUG) || YYERROR_VERBOSE -/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. +#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE +/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. First, the terminals, then, starting at YYNTOKENS, nonterminals. */ static const char *const yytname[] = { ]b4_tname[ }; - -#define yytname_size ((int) (sizeof (yytname) / sizeof (yytname[0]))) #endif /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ @@ -345,7 +402,7 @@ static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] = /* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If positive, shift that token. If negative, reduce the rule which number is the opposite. If zero, do what YYDEFACT says. - If YYTABLE_NINF, parse error. */ + If YYTABLE_NINF, syntax error. */ #define YYTABLE_NINF ]b4_table_ninf[ static const ]b4_int_type_for([b4_table])[ yytable[] = { @@ -364,9 +421,9 @@ static const ]b4_int_type_for([b4_conflict_list_heads])[ yyconflp[] = /* YYCONFL[I] -- lists of conflicting rule numbers, each terminated by 0, pointed into by YYCONFLP. */ ]dnl Do not use b4_int_type_for here, since there are places where -dnl pointers onto yyconfl are taken, which type is "short *". +dnl pointers onto yyconfl are taken, which type is "short int *". dnl We probably ought to introduce a type for confl. -[static const short yyconfl[] = +[static const short int yyconfl[] = { ]b4_conflicting_rules[ }; @@ -376,33 +433,65 @@ static const ]b4_int_type_for([b4_check])[ yycheck[] = ]b4_check[ }; +/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing + symbol of state STATE-NUM. */ +static const ]b4_int_type_for([b4_stos])[ yystos[] = +{ + ]b4_stos[ +}; + /* Prevent warning if -Wmissing-prototypes. */ -]b4_c_ansi_function_decl([yyparse], [int], b4_parse_param) +]b4_c_ansi_function_decl([yyparse], [int], b4_parse_param)[ -m4_ifset([b4_parse_param], -[#define YY_USER_FORMALS , b4_c_ansi_formals(b4_parse_param) -#define YY_USER_ARGS , b4_c_args(b4_parse_param)], -[#define YY_USER_FORMALS -#define YY_USER_ARGS]) - - -[/* Error token number */ +/* Error token number */ #define YYTERROR 1 -/* YYLLOC_DEFAULT -- Compute the default location (before the actions - are run). */ - -#define YYRHSLOC(yyRhs,YYK) (yyRhs[YYK].yystate.yyloc) +/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. + If N is 0, then set CURRENT to the empty location which ends + the previous symbol: RHS[0] (always defined). */ +]b4_location_if([[ +#define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc) +#ifndef YYLLOC_DEFAULT +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + do \ + if (N) \ + { \ + (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ + (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ + } \ + else \ + { \ + (Current).first_line = (Current).last_line = \ + YYRHSLOC (Rhs, 0).last_line; \ + (Current).first_column = (Current).last_column = \ + YYRHSLOC (Rhs, 0).last_column; \ + } \ + while (0) + +/* YY_LOCATION_PRINT -- Print the location on the stream. + This macro was not mandated originally: define only if we know + we won't break user code: when these are the locations we know. */ + +# define YY_LOCATION_PRINT(File, Loc) \ + fprintf (File, "%d.%d-%d.%d", \ + (Loc).first_line, (Loc).first_column, \ + (Loc).last_line, (Loc).last_column) +#endif +]],[ #ifndef YYLLOC_DEFAULT -# define YYLLOC_DEFAULT(yyCurrent, yyRhs, YYN) \ - yyCurrent.first_line = YYRHSLOC(yyRhs,1).first_line; \ - yyCurrent.first_column = YYRHSLOC(yyRhs,1).first_column; \ - yyCurrent.last_line = YYRHSLOC(yyRhs,YYN).last_line; \ - yyCurrent.last_column = YYRHSLOC(yyRhs,YYN).last_column; +# define YYLLOC_DEFAULT(Current, Rhs, N) ((void) 0) +#endif +])[ + +#ifndef YY_LOCATION_PRINT +# define YY_LOCATION_PRINT(File, Loc) ((void) 0) #endif + /* YYLEX -- calling `yylex' with the right arguments. */ #define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[ @@ -425,7 +514,7 @@ static const int YYEMPTY = -2; typedef enum { yyok, yyaccept, yyabort, yyerr } YYRESULTTAG; #define YYCHK(YYE) \ - do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; } \ + do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; } \ while (0) #if YYDEBUG @@ -439,12 +528,29 @@ do { \ if (yydebug) \ YYFPRINTF Args; \ } while (0) + +]b4_yysymprint_generate([b4_c_ansi_function_def])[ + +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ +do { \ + if (yydebug) \ + { \ + YYFPRINTF (stderr, "%s ", Title); \ + yysymprint (stderr, \ + Type, Value]b4_location_if([, Location])[); \ + YYFPRINTF (stderr, "\n"); \ + } \ +} while (0) + /* Nonzero means print parse trace. It is left uninitialized so that multiple parsers can coexist. */ int yydebug; + #else /* !YYDEBUG */ - /* Avoid empty `if' bodies. */ -# define YYDPRINTF(Args) {} + +# define YYDPRINTF(Args) +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) + #endif /* !YYDEBUG */ /* YYINITDEPTH -- initial size of the parser's stacks. */ @@ -459,28 +565,99 @@ int yydebug; SIZE_MAX < YYMAXDEPTH * sizeof (GLRStackItem) evaluated with infinite-precision integer arithmetic. */ -#if YYMAXDEPTH == 0 -# undef YYMAXDEPTH -#endif - #ifndef YYMAXDEPTH # define YYMAXDEPTH ]b4_stack_depth_max[ #endif /* Minimum number of free items on the stack allowed after an allocation. This is to allow allocation and initialization - to be completed by functions that call expandGLRStack before the + to be completed by functions that call yyexpandGLRStack before the stack is expanded, thus insuring that all necessary pointers get properly redirected to new data. */ #define YYHEADROOM 2 -#if ! defined (YYSTACKEXPANDABLE) \ - && (! defined (__cplusplus) || (YYLTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)) -#define YYSTACKEXPANDABLE 1 -#else -#define YYSTACKEXPANDABLE 0 +#ifndef YYSTACKEXPANDABLE +# if (! defined (__cplusplus) \ + || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \ + && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)) +# define YYSTACKEXPANDABLE 1 +# else +# define YYSTACKEXPANDABLE 0 +# endif #endif +#if YYERROR_VERBOSE + +# 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 size_t +yytnamerr (char *yyres, const char *yystr) +{ + if (*yystr == '"') + { + size_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; + /* Fall through. */ + default: + if (yyres) + yyres[yyn] = *yyp; + yyn++; + break; + + case '"': + if (yyres) + yyres[yyn] = '\0'; + return yyn; + } + do_not_strip_quotes: ; + } + + if (! yyres) + return strlen (yystr); + + return yystpcpy (yyres, yystr) - yyres; +} +# endif + +#endif /* !YYERROR_VERBOSE */ + /** State numbers, as in LALR(1) machine */ typedef int yyStateNum; @@ -488,10 +665,10 @@ typedef int yyStateNum; typedef int yyRuleNum; /** Grammar symbol */ -typedef short yySymbol; +typedef short int yySymbol; /** Item references, as in LALR(1) machine */ -typedef short yyItemNum; +typedef short int yyItemNum; typedef struct yyGLRState yyGLRState; typedef struct yySemanticOption yySemanticOption; @@ -500,15 +677,26 @@ typedef struct yyGLRStack yyGLRStack; typedef struct yyGLRStateSet yyGLRStateSet; struct yyGLRState { - bool yyisState; - bool yyresolved; + /** Type tag: always true. */ + yybool yyisState; + /** Type tag for yysemantics. If true, yysval applies, otherwise + * yyfirstVal applies. */ + yybool yyresolved; + /** Number of corresponding LALR(1) machine state. */ yyStateNum yylrState; + /** Preceding state in this stack */ yyGLRState* yypred; + /** Source position of the first token produced by my symbol */ size_t yyposn; union { + /** First in a chain of alternative reductions producing the + * non-terminal corresponding to this state, threaded through + * yynext. */ yySemanticOption* yyfirstVal; + /** Semantic value for this state. */ YYSTYPE yysval; } yysemantics; + /** Source location for this state. */ YYLTYPE yyloc; }; @@ -518,89 +706,128 @@ struct yyGLRStateSet { }; struct yySemanticOption { - bool yyisState; + /** Type tag: always false. */ + yybool yyisState; + /** Rule number for this reduction */ yyRuleNum yyrule; + /** The last RHS state in the list of states to be reduced. */ yyGLRState* yystate; + /** Next sibling in chain of options. To facilitate merging, + * options are chained in decreasing order by address. */ yySemanticOption* yynext; }; +/** Type of the items in the GLR stack. The yyisState field + * indicates which item of the union is valid. */ union yyGLRStackItem { yyGLRState yystate; yySemanticOption yyoption; }; struct yyGLRStack { - int yyerrflag; int yyerrState; +]b4_location_if([[ /* To compute the location of the error token. */ + yyGLRStackItem yyerror_range[3];]])[ ]b4_pure_if( [ int yyerrcnt; int yyrawchar; ])[ yySymbol* yytokenp; - jmp_buf yyexception_buffer; + YYJMP_BUF yyexception_buffer; yyGLRStackItem* yyitems; yyGLRStackItem* yynextFree; - int yyspaceLeft; + size_t yyspaceLeft; yyGLRState* yysplitPoint; yyGLRState* yylastDeleted; yyGLRStateSet yytops; }; -static void yyinitGLRStack (yyGLRStack* yystack, size_t yysize); static void yyexpandGLRStack (yyGLRStack* yystack); -static void yyfreeGLRStack (yyGLRStack* yystack); +static void yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yymsg) + __attribute__ ((__noreturn__)); static void -yyFail (yyGLRStack* yystack, const char* yyformat, ...) +yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yymsg) { - if (yyformat != NULL) - { - char yymsg[256]; - va_list yyap; - va_start (yyap, yyformat); - yystack->yyerrflag = 1; - vsprintf (yymsg, yyformat, yyap); - yyerror (yymsg); - } - longjmp (yystack->yyexception_buffer, 1); + if (yymsg != NULL) + yyerror (]b4_yyerror_args[yymsg); + YYLONGJMP (yystack->yyexception_buffer, 1); +} + +static void yyMemoryExhausted (yyGLRStack* yystack) + __attribute__ ((__noreturn__)); +static void +yyMemoryExhausted (yyGLRStack* yystack) +{ + YYLONGJMP (yystack->yyexception_buffer, 2); } #if YYDEBUG || YYERROR_VERBOSE -/** A printable representation of TOKEN. Valid until next call to - * tokenName. */ +/** A printable representation of TOKEN. */ static inline const char* yytokenName (yySymbol yytoken) { + if (yytoken == YYEMPTY) + return ""; + return yytname[yytoken]; } #endif +/** Fill in YYVSP[YYLOW1 .. YYLOW0-1] from the chain of states starting + * at YYVSP[YYLOW0].yystate.yypred. Leaves YYVSP[YYLOW1].yystate.yypred + * containing the pointer to the next state in the chain. Assumes + * YYLOW1 < YYLOW0. */ +static void yyfillin (yyGLRStackItem *, int, int) __attribute__ ((__unused__)); +static void +yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1) +{ + yyGLRState* s; + int i; + s = yyvsp[yylow0].yystate.yypred; + for (i = yylow0-1; i >= yylow1; i -= 1) + { + YYASSERT (s->yyresolved); + yyvsp[i].yystate.yyresolved = yytrue; + yyvsp[i].yystate.yysemantics.yysval = s->yysemantics.yysval; + yyvsp[i].yystate.yyloc = s->yyloc; + s = yyvsp[i].yystate.yypred = s->yypred; + } +} + +/* Do nothing if YYNORMAL or if *YYLOW <= YYLOW1. Otherwise, fill in + YYVSP[YYLOW1 .. *YYLOW-1] as in yyfillin and set *YYLOW = YYLOW1. + For convenience, always return YYLOW1. */ +static inline int yyfill (yyGLRStackItem *, int *, int, yybool) + __attribute__ ((__unused__)); +static inline int +yyfill (yyGLRStackItem *yyvsp, int *yylow, int yylow1, yybool yynormal) +{ + if (!yynormal && yylow1 < *yylow) + { + yyfillin (yyvsp, *yylow, yylow1); + *yylow = yylow1; + } + return yylow1; +} + /** Perform user action for rule number YYN, with RHS length YYRHSLEN, * and top stack item YYVSP. YYLVALP points to place to put semantic * value ($$), and yylocp points to place for location information - * (@$). Returns yyok for normal return, yyaccept for YYACCEPT, + * (@@$). Returns yyok for normal return, yyaccept for YYACCEPT, * yyerr for YYERROR, yyabort for YYABORT. */ static YYRESULTTAG yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp, - YYSTYPE* yyvalp, YYLTYPE* yylocp, yyGLRStack* yystack - YY_USER_FORMALS) + YYSTYPE* yyvalp, + YYLTYPE* YYOPTIONAL_LOC (yylocp), + yyGLRStack* yystack + ]b4_user_formals[) { - /* Avoid `unused' warnings in there are no $n. */ - (void) yystack; + yybool yynormal __attribute__ ((__unused__)) = + (yystack->yysplitPoint == NULL); + int yylow; - if (yyrhslen == 0) - { - *yyvalp = yyval_default; - *yylocp = yyloc_default; - } - else - { - *yyvalp = yyvsp[1-yyrhslen].yystate.yysemantics.yysval; - *yylocp = yyvsp[1-yyrhslen].yystate.yyloc; - } -# undef yyval -# define yyval (*yyvalp) # undef yyerrok # define yyerrok (yystack->yyerrState = 0) # undef YYACCEPT @@ -608,26 +835,33 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp, # undef YYABORT # define YYABORT return yyabort # undef YYERROR -# define YYERROR return yyerr +# define YYERROR return yyerrok, yyerr # undef YYRECOVERING # define YYRECOVERING (yystack->yyerrState != 0) # undef yyclearin # define yyclearin (yychar = *(yystack->yytokenp) = YYEMPTY) +# undef YYFILL +# define YYFILL(N) yyfill (yyvsp, &yylow, N, yynormal) # undef YYBACKUP # define YYBACKUP(Token, Value) \ - do { \ - yyerror ("syntax error: cannot back up"); \ - YYERROR; \ - } while (0) + return yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")), \ + yyerrok, yyerr -] - switch (yyn) - { - b4_actions - } + yylow = 1; + if (yyrhslen == 0) + *yyvalp = yyval_default; + else + *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval; + YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen); +]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = *yylocp; +]]) + switch (yyn) + { + b4_actions + default: break; + } - return yyok; -# undef yyval + return yyok; # undef yyerrok # undef YYABORT # undef YYACCEPT @@ -635,35 +869,67 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp, # undef YYBACKUP # undef yyclearin # undef YYRECOVERING -/* Line __line__ of __file__. */ -#line __oline__ "__ofile__" +/* Line __line__ of glr.c. */ +b4_syncline([@oline@], [@ofile@]) } -static YYSTYPE +static void yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1) { - YYSTYPE yyval = *yy0; - /* `Use' the arguments. */ + /* `Use' the arguments. */ (void) yy0; (void) yy1; switch (yyn) { b4_mergers + default: break; } - return yyval; } [ - /* Bison grammar-table manipulation */ + /* Bison grammar-table manipulation. */ -/** Number of symbols composing the right hand side of rule #RULE. */ +]b4_yydestruct_generate([b4_c_ansi_function_def])[ + +/** Number of symbols composing the right hand side of rule #RULE. */ static inline int yyrhsLength (yyRuleNum yyrule) { return yyr2[yyrule]; } +static void +yydestroyGLRState (char const *yymsg, yyGLRState *yys) +{ + if (yys->yyresolved) + yydestruct (yymsg, yystos[yys->yylrState], + &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[); + else + { +#if YYDEBUG + if (yydebug) + { + YYFPRINTF (stderr, "%s unresolved ", yymsg); + yysymprint (stderr, yystos[yys->yylrState], + &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[); + YYFPRINTF (stderr, "\n"); + } +#endif + + if (yys->yysemantics.yyfirstVal) + { + yySemanticOption *yyoption = yys->yysemantics.yyfirstVal; + yyGLRState *yyrh; + int yyn; + for (yyrh = yyoption->yystate, yyn = yyrhsLength (yyoption->yyrule); + yyn > 0; + yyrh = yyrh->yypred, yyn -= 1) + yydestroyGLRState (yymsg, yyrh); + } + } +} + /** Left-hand-side symbol for rule #RULE. */ static inline yySymbol yylhsNonterm (yyRuleNum yyrule) @@ -671,12 +937,17 @@ yylhsNonterm (yyRuleNum yyrule) return yyr1[yyrule]; } +#define yyis_pact_ninf(yystate) \ + ]m4_if(m4_eval(b4_pact_ninf < b4_pact_min), 1, + 0, + ((yystate) == YYPACT_NINF))[ + /** True iff LR state STATE has only a default reduction (regardless * of token). */ -static inline bool +static inline yybool yyisDefaultedState (yyStateNum yystate) { - return yypact[yystate] == YYPACT_NINF; + return yyis_pact_ninf (yypact[yystate]); } /** The default reduction for STATE, assuming it has one. */ @@ -686,6 +957,11 @@ yydefaultAction (yyStateNum yystate) return yydefact[yystate]; } +#define yyis_table_ninf(yytable_value) \ + ]m4_if(m4_eval(b4_table_ninf < b4_table_min), 1, + 0, + ((yytable_value) == YYTABLE_NINF))[ + /** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN. * Result R means * R < 0: Reduce on rule -R. @@ -696,7 +972,7 @@ yydefaultAction (yyStateNum yystate) */ static inline void yygetLRActions (yyStateNum yystate, int yytoken, - int* yyaction, const short** yyconflicts) + int* yyaction, const short int** yyconflicts) { int yyindex = yypact[yystate] + yytoken; if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken) @@ -704,7 +980,7 @@ yygetLRActions (yyStateNum yystate, int yytoken, *yyaction = -yydefact[yystate]; *yyconflicts = yyconfl; } - else if (yytable[yyindex] != YYTABLE_NINF) + else if (! yyis_table_ninf (yytable[yyindex])) { *yyaction = yytable[yyindex]; *yyconflicts = yyconfl + yyconflp[yyindex]; @@ -727,13 +1003,13 @@ yyLRgotoState (yyStateNum yystate, yySymbol yylhs) return yydefgoto[yylhs - YYNTOKENS]; } -static inline bool +static inline yybool yyisShiftAction (int yyaction) { return 0 < yyaction; } -static inline bool +static inline yybool yyisErrorAction (int yyaction) { return yyaction == 0; @@ -741,14 +1017,6 @@ yyisErrorAction (int yyaction) /* GLRStates */ -/** True iff the semantic value of the edge leading to STATE is - * resolved. */ -static inline bool -yyhasResolvedValue (yyGLRState* yystate) -{ - return yystate->yyresolved; -} - static void yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate, yyGLRState* rhs, yyRuleNum yyrule) @@ -769,34 +1037,39 @@ yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate, /* GLRStacks */ /** Initialize SET to a singleton set containing an empty stack. */ -static void +static yybool yyinitStateSet (yyGLRStateSet* yyset) { yyset->yysize = 1; yyset->yycapacity = 16; - yyset->yystates = (yyGLRState**) malloc (16 * sizeof (yyset->yystates[0])); + yyset->yystates = (yyGLRState**) YYMALLOC (16 * sizeof yyset->yystates[0]); + if (! yyset->yystates) + return yyfalse; yyset->yystates[0] = NULL; + return yytrue; } static void yyfreeStateSet (yyGLRStateSet* yyset) { - free (yyset->yystates); + YYFREE (yyset->yystates); } /** Initialize STACK to a single empty stack, with total maximum * capacity for all stacks of SIZE. */ -static void +static yybool yyinitGLRStack (yyGLRStack* yystack, size_t yysize) { - yystack->yyerrflag = 0; yystack->yyerrState = 0; yynerrs = 0; yystack->yyspaceLeft = yysize; - yystack->yynextFree = yystack->yyitems = - (yyGLRStackItem*) malloc (yysize * sizeof (yystack->yynextFree[0])); + yystack->yyitems = + (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystack->yynextFree[0]); + if (!yystack->yyitems) + return yyfalse; + yystack->yynextFree = yystack->yyitems; yystack->yysplitPoint = NULL; yystack->yylastDeleted = NULL; - yyinitStateSet (&yystack->yytops); + return yyinitStateSet (&yystack->yytops); } #define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \ @@ -811,23 +1084,25 @@ static void yyexpandGLRStack (yyGLRStack* yystack) { #if YYSTACKEXPANDABLE - yyGLRStack yynewStack; + yyGLRStackItem* yynewItems; yyGLRStackItem* yyp0, *yyp1; size_t yysize, yynewSize; size_t yyn; yysize = yystack->yynextFree - yystack->yyitems; if (YYMAXDEPTH <= yysize) - yyFail (yystack, "parsing stack overflow (%d items)", yysize); + yyMemoryExhausted (yystack); yynewSize = 2*yysize; if (YYMAXDEPTH < yynewSize) yynewSize = YYMAXDEPTH; - yyinitGLRStack (&yynewStack, yynewSize); - for (yyp0 = yystack->yyitems, yyp1 = yynewStack.yyitems, yyn = yysize; + yynewItems = (yyGLRStackItem*) YYMALLOC (yynewSize * sizeof yynewItems[0]); + if (! yynewItems) + yyMemoryExhausted (yystack); + for (yyp0 = yystack->yyitems, yyp1 = yynewItems, yyn = yysize; 0 < yyn; yyn -= 1, yyp0 += 1, yyp1 += 1) { *yyp1 = *yyp0; - if (*(bool*) yyp0) + if (*(yybool *) yyp0) { yyGLRState* yys0 = &yyp0->yystate; yyGLRState* yys1 = &yyp1->yystate; @@ -849,30 +1124,28 @@ yyexpandGLRStack (yyGLRStack* yystack) } } if (yystack->yysplitPoint != NULL) - yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewStack.yyitems, + yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewItems, yystack->yysplitPoint, yystate); for (yyn = 0; yyn < yystack->yytops.yysize; yyn += 1) if (yystack->yytops.yystates[yyn] != NULL) yystack->yytops.yystates[yyn] = - YYRELOC (yystack->yyitems, yynewStack.yyitems, + YYRELOC (yystack->yyitems, yynewItems, yystack->yytops.yystates[yyn], yystate); - free (yystack->yyitems); - yystack->yyitems = yynewStack.yyitems; - yystack->yynextFree = yynewStack.yynextFree + yysize; - yystack->yyspaceLeft = yynewStack.yyspaceLeft - yysize; + YYFREE (yystack->yyitems); + yystack->yyitems = yynewItems; + yystack->yynextFree = yynewItems + yysize; + yystack->yyspaceLeft = yynewSize - yysize; #else - - yyFail (yystack, "parsing stack overflow (%d items)", yysize); - + yyMemoryExhausted (yystack); #endif } static void yyfreeGLRStack (yyGLRStack* yystack) { - free (yystack->yyitems); + YYFREE (yystack->yyitems); yyfreeStateSet (&yystack->yytops); } @@ -888,7 +1161,7 @@ yyupdateSplit (yyGLRStack* yystack, yyGLRState* yys) /** Invalidate stack #K in STACK. */ static inline void -yymarkStackDeleted (yyGLRStack* yystack, int yyk) +yymarkStackDeleted (yyGLRStack* yystack, size_t yyk) { if (yystack->yytops.yystates[yyk] != NULL) yystack->yylastDeleted = yystack->yytops.yystates[yyk]; @@ -919,14 +1192,19 @@ yyremoveDeletes (yyGLRStack* yystack) if (yystack->yytops.yystates[yyi] == NULL) { if (yyi == yyj) - YYDPRINTF ((stderr, "Removing dead stacks.\n")); + { + YYDPRINTF ((stderr, "Removing dead stacks.\n")); + } yystack->yytops.yysize -= 1; } else { yystack->yytops.yystates[yyj] = yystack->yytops.yystates[yyi]; if (yyj != yyi) - YYDPRINTF ((stderr, "Rename stack %d -> %d.\n", yyi, yyj)); + { + YYDPRINTF ((stderr, "Rename stack %lu -> %lu.\n", + (unsigned long int) yyi, (unsigned long int) yyj)); + } yyj += 1; } yyi += 1; @@ -936,7 +1214,8 @@ yyremoveDeletes (yyGLRStack* yystack) /** Shift to a new state on stack #K of STACK, corresponding to LR state * LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */ static inline void -yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn, +yyglrShift (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState, + size_t yyposn, YYSTYPE yysval, YYLTYPE* yylocp) { yyGLRStackItem* yynewItem; @@ -956,11 +1235,11 @@ yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn, yyexpandGLRStack (yystack); } -/** Shift to a new state on stack #K of STACK, to a new state - * corresponding to LR state LRSTATE, at input position POSN, with - * the (unresolved) semantic value of RHS under the action for RULE. */ +/** Shift stack #K of YYSTACK, to a new state corresponding to LR + * state YYLRSTATE, at input position YYPOSN, with the (unresolved) + * semantic value of YYRHS under the action for YYRULE. */ static inline void -yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState, +yyglrShiftDefer (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState, size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule) { yyGLRStackItem* yynewItem; @@ -984,9 +1263,9 @@ yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState, * have been previously resolved. Set *VALP to the resulting value, * and *LOCP to the computed location (if any). Return value is as * for userAction. */ -static inline int -yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule, - YYSTYPE* yyvalp, YYLTYPE* yylocp YY_USER_FORMALS) +static inline YYRESULTTAG +yydoAction (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, + YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[) { int yynrhs = yyrhsLength (yyrule); @@ -994,50 +1273,29 @@ yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule, { /* Standard special case: single stack. */ yyGLRStackItem* rhs = (yyGLRStackItem*) yystack->yytops.yystates[yyk]; - assert (yyk == 0); + YYASSERT (yyk == 0); yystack->yynextFree -= yynrhs; yystack->yyspaceLeft += yynrhs; yystack->yytops.yystates[0] = & yystack->yynextFree[-1].yystate; - if (yynrhs == 0) - { - *yyvalp = yyval_default; - *yylocp = yyloc_default; - } - else - { - *yyvalp = rhs[1-yynrhs].yystate.yysemantics.yysval; - *yylocp = rhs[1-yynrhs].yystate.yyloc; - } return yyuserAction (yyrule, yynrhs, rhs, - yyvalp, yylocp, yystack YY_USER_ARGS); + yyvalp, yylocp, yystack]b4_user_args[); } else { int yyi; yyGLRState* yys; - yyGLRStackItem yyrhsVals[YYMAXRHS]; - for (yyi = yynrhs-1, yys = yystack->yytops.yystates[yyk]; 0 <= yyi; - yyi -= 1, yys = yys->yypred) + yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1]; + yys = yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred + = yystack->yytops.yystates[yyk]; + for (yyi = 0; yyi < yynrhs; yyi += 1) { - assert (yys->yypred != NULL); - yyrhsVals[yyi].yystate.yyresolved = yytrue; - yyrhsVals[yyi].yystate.yysemantics.yysval = yys->yysemantics.yysval; - yyrhsVals[yyi].yystate.yyloc = yys->yyloc; + yys = yys->yypred; + YYASSERT (yys); } yyupdateSplit (yystack, yys); yystack->yytops.yystates[yyk] = yys; - if (yynrhs == 0) - { - *yyvalp = yyval_default; - *yylocp = yyloc_default; - } - else - { - *yyvalp = yyrhsVals[0].yystate.yysemantics.yysval; - *yylocp = yyrhsVals[0].yystate.yyloc; - } - return yyuserAction (yyrule, yynrhs, yyrhsVals + (yynrhs-1), - yyvalp, yylocp, yystack YY_USER_ARGS); + return yyuserAction (yyrule, yynrhs, yyrhsVals + YYMAXRHS + YYMAXLEFT - 1, + yyvalp, yylocp, yystack]b4_user_args[); } } @@ -1058,12 +1316,13 @@ static inline void yy_reduce_print (size_t yyk, yyRuleNum yyrule) { int yyi; - YYDPRINTF ((stderr, "Reducing stack %d by rule %d (line %d),", - yyk, yyrule - 1, yyrline[yyrule])); + YYFPRINTF (stderr, "Reducing stack %lu by rule %d (line %lu), ", + (unsigned long int) yyk, yyrule - 1, + (unsigned long int) yyrline[yyrule]); /* Print the symbols being reduced, and their result. */ for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) YYFPRINTF (stderr, "%s ", yytokenName (yyrhs[yyi])); - YYFPRINTF (stderr, " -> %s\n", yytokenName (yyr1[yyrule])); + YYFPRINTF (stderr, "-> %s\n", yytokenName (yyr1[yyrule])); } #endif @@ -1080,7 +1339,7 @@ yy_reduce_print (size_t yyk, yyRuleNum yyrule) */ static inline YYRESULTTAG yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, - bool yyforceEval YY_USER_FORMALS) + yybool yyforceEval]b4_user_formals[) { size_t yyposn = yystack->yytops.yystates[yyk]->yyposn; @@ -1090,13 +1349,11 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, YYLTYPE yyloc; YY_REDUCE_PRINT (yyk, yyrule); - YYCHK (yydoAction (yystack, yyk, yyrule, &yysval, &yyloc YY_USER_ARGS)); + YYCHK (yydoAction (yystack, yyk, yyrule, &yysval, &yyloc]b4_user_args[)); yyglrShift (yystack, yyk, yyLRgotoState (yystack->yytops.yystates[yyk]->yylrState, yylhsNonterm (yyrule)), - yyposn, yysval, &yyloc); - YYDPRINTF ((stderr, "Stack %d entering state %d\n", - yyk, yystack->yytops.yystates[yyk]->yylrState)); + yyposn, yysval, &yyloc); } else { @@ -1109,14 +1366,13 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, 0 < yyn; yyn -= 1) { yys = yys->yypred; - assert (yys != NULL); + YYASSERT (yys); } yyupdateSplit (yystack, yys); yynewLRState = yyLRgotoState (yys->yylrState, yylhsNonterm (yyrule)); YYDPRINTF ((stderr, - "Reduced stack %d by rule #%d; action deferred. " - "Now in state %d.\n", - yyk, yyrule-1, yynewLRState)); + "Reduced stack %lu by rule #%d; action deferred. Now in state %d.\n", + (unsigned long int) yyk, yyrule - 1, yynewLRState)); for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1) if (yyi != yyk && yystack->yytops.yystates[yyi] != NULL) { @@ -1128,9 +1384,10 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, { yyaddDeferredAction (yystack, yyp, yys0, yyrule); yymarkStackDeleted (yystack, yyk); - YYDPRINTF ((stderr, "Merging stack %d into stack %d.\n", - yyk, yyi)); - return 0; + YYDPRINTF ((stderr, "Merging stack %lu into stack %lu.\n", + (unsigned long int) yyk, + (unsigned long int) yyi)); + return yyok; } yyp = yyp->yypred; } @@ -1138,24 +1395,28 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, yystack->yytops.yystates[yyk] = yys; yyglrShiftDefer (yystack, yyk, yynewLRState, yyposn, yys0, yyrule); } - return 0; + return yyok; } -static int -yysplitStack (yyGLRStack* yystack, int yyk) +static size_t +yysplitStack (yyGLRStack* yystack, size_t yyk) { if (yystack->yysplitPoint == NULL) { - assert (yyk == 0); + YYASSERT (yyk == 0); yystack->yysplitPoint = yystack->yytops.yystates[yyk]; } if (yystack->yytops.yysize >= yystack->yytops.yycapacity) { - yystack->yytops.yycapacity *= 2; - yystack->yytops.yystates = - (yyGLRState**) realloc (yystack->yytops.yystates, - yystack->yytops.yycapacity - * sizeof (yyGLRState*)); + yyGLRState** yynewStates; + if (! ((yystack->yytops.yycapacity + <= (YYSIZEMAX / (2 * sizeof yynewStates[0]))) + && (yynewStates = + (yyGLRState**) YYREALLOC (yystack->yytops.yystates, + ((yystack->yytops.yycapacity *= 2) + * sizeof yynewStates[0]))))) + yyMemoryExhausted (yystack); + yystack->yytops.yystates = yynewStates; } yystack->yytops.yystates[yystack->yytops.yysize] = yystack->yytops.yystates[yyk]; @@ -1166,7 +1427,7 @@ yysplitStack (yyGLRStack* yystack, int yyk) /** True iff Y0 and Y1 represent identical options at the top level. * That is, they represent the same rule applied to RHS symbols * that produce the same terminal symbols. */ -static bool +static yybool yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1) { if (yyy0->yyrule == yyy1->yyrule) @@ -1185,9 +1446,8 @@ yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1) return yyfalse; } -/** Assuming identicalOptions (Y0,Y1), (destructively) merge the - * alternative semantic values for the RHS-symbols of Y1 into the - * corresponding semantic value sets of the symbols of Y0. */ +/** Assuming identicalOptions (Y0,Y1), destructively merge the + * alternative semantic values for the RHS-symbols of Y1 and Y0. */ static void yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1) { @@ -1197,16 +1457,46 @@ yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1) yyn = yyrhsLength (yyy0->yyrule); yyn > 0; yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1) - if (yys0 == yys1) - break; - else if (! yys0->yyresolved && ! yys1->yyresolved) - { - yySemanticOption* yyz; - for (yyz = yys0->yysemantics.yyfirstVal; yyz->yynext != NULL; - yyz = yyz->yynext) - ; - yyz->yynext = yys1->yysemantics.yyfirstVal; - } + { + if (yys0 == yys1) + break; + else if (yys0->yyresolved) + { + yys1->yyresolved = yytrue; + yys1->yysemantics.yysval = yys0->yysemantics.yysval; + } + else if (yys1->yyresolved) + { + yys0->yyresolved = yytrue; + yys0->yysemantics.yysval = yys1->yysemantics.yysval; + } + else + { + yySemanticOption** yyz0p; + yySemanticOption* yyz1; + yyz0p = &yys0->yysemantics.yyfirstVal; + yyz1 = yys1->yysemantics.yyfirstVal; + while (yytrue) + { + if (yyz1 == *yyz0p || yyz1 == NULL) + break; + else if (*yyz0p == NULL) + { + *yyz0p = yyz1; + break; + } + else if (*yyz0p < yyz1) + { + yySemanticOption* yyz = *yyz0p; + *yyz0p = yyz1; + yyz1 = yyz1->yynext; + (*yyz0p)->yynext = yyz; + } + yyz0p = &(*yyz0p)->yynext; + } + yys1->yysemantics.yyfirstVal = yys0->yysemantics.yyfirstVal; + } + } } /** Y0 and Y1 represent two possible actions to take in a given @@ -1236,23 +1526,23 @@ yypreference (yySemanticOption* y0, yySemanticOption* y1) static YYRESULTTAG yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack, YYSTYPE* yyvalp, - YYLTYPE* yylocp YY_USER_FORMALS); + YYLTYPE* yylocp]b4_user_formals[); static YYRESULTTAG -yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack YY_USER_FORMALS) +yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack]b4_user_formals[) { YYRESULTTAG yyflag; if (0 < yyn) { - assert (yys->yypred != NULL); - yyflag = yyresolveStates (yys->yypred, yyn-1, yystack YY_USER_ARGS); + YYASSERT (yys->yypred); + yyflag = yyresolveStates (yys->yypred, yyn-1, yystack]b4_user_args[); if (yyflag != yyok) return yyflag; if (! yys->yyresolved) { yyflag = yyresolveValue (yys->yysemantics.yyfirstVal, yystack, &yys->yysemantics.yysval, &yys->yyloc - YY_USER_ARGS); + ]b4_user_args[); if (yyflag != yyok) return yyflag; yys->yyresolved = yytrue; @@ -1263,24 +1553,17 @@ yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack YY_USER_FORMALS) static YYRESULTTAG yyresolveAction (yySemanticOption* yyopt, yyGLRStack* yystack, - YYSTYPE* yyvalp, YYLTYPE* yylocp YY_USER_FORMALS) + YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[) { - yyGLRStackItem yyrhsVals[YYMAXRHS]; - int yynrhs, yyi; - yyGLRState* yys; + yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1]; + int yynrhs; yynrhs = yyrhsLength (yyopt->yyrule); - YYCHK (yyresolveStates (yyopt->yystate, yynrhs, yystack YY_USER_ARGS)); - for (yyi = yynrhs-1, yys = yyopt->yystate; 0 <= yyi; - yyi -= 1, yys = yys->yypred) - { - assert (yys->yypred != NULL); - yyrhsVals[yyi].yystate.yyresolved = yytrue; - yyrhsVals[yyi].yystate.yysemantics.yysval = yys->yysemantics.yysval; - yyrhsVals[yyi].yystate.yyloc = yys->yyloc; - } - return yyuserAction (yyopt->yyrule, yynrhs, yyrhsVals + (yynrhs-1), - yyvalp, yylocp, yystack YY_USER_ARGS); + YYCHK (yyresolveStates (yyopt->yystate, yynrhs, yystack]b4_user_args[)); + yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred = yyopt->yystate; + return yyuserAction (yyopt->yyrule, yynrhs, + yyrhsVals + YYMAXRHS + YYMAXLEFT - 1, + yyvalp, yylocp, yystack]b4_user_args[); } #if YYDEBUG @@ -1308,9 +1591,10 @@ yyreportTree (yySemanticOption* yyx, int yyindent) yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)), yyx->yyrule); else - YYFPRINTF (stderr, "%*s%s -> \n", + YYFPRINTF (stderr, "%*s%s -> \n", yyindent, "", yytokenName (yylhsNonterm (yyx->yyrule)), - yyx->yyrule, yys->yyposn+1, yyx->yystate->yyposn); + yyx->yyrule, (unsigned long int) (yys->yyposn + 1), + (unsigned long int) yyx->yystate->yyposn); for (yyi = 1; yyi <= yynrhs; yyi += 1) { if (yystates[yyi]->yyresolved) @@ -1319,9 +1603,10 @@ yyreportTree (yySemanticOption* yyx, int yyindent) YYFPRINTF (stderr, "%*s%s \n", yyindent+2, "", yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1])); else - YYFPRINTF (stderr, "%*s%s \n", yyindent+2, "", + YYFPRINTF (stderr, "%*s%s \n", yyindent+2, "", yytokenName (yyrhs[yyprhs[yyx->yyrule]+yyi-1]), - yystates[yyi-1]->yyposn+1, yystates[yyi]->yyposn); + (unsigned long int) (yystates[yyi - 1]->yyposn + 1), + (unsigned long int) yystates[yyi]->yyposn); } else yyreportTree (yystates[yyi]->yysemantics.yyfirstVal, yyindent+2); @@ -1329,9 +1614,12 @@ yyreportTree (yySemanticOption* yyx, int yyindent) } #endif +static void yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1, + yyGLRStack* yystack]b4_pure_formals[) + __attribute__ ((__noreturn__)); static void yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1, - yyGLRStack* yystack) + yyGLRStack* yystack]b4_pure_formals[) { /* `Unused' warnings. */ (void) yyx0; @@ -1345,7 +1633,7 @@ yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1, yyreportTree (yyx1, 2); YYFPRINTF (stderr, "\n"); #endif - yyFail (yystack, "ambiguity detected"); + yyFail (yystack][]b4_pure_args[, YY_("syntax is ambiguous")); } @@ -1353,58 +1641,72 @@ yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1, * actions, and return the result. */ static YYRESULTTAG yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack, - YYSTYPE* yyvalp, YYLTYPE* yylocp YY_USER_FORMALS) + YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[) { yySemanticOption* yybest; - yySemanticOption* yyp; - int yymerge; + yySemanticOption** yypp; + yybool yymerge; yybest = yyoptionList; - yymerge = 0; - for (yyp = yyoptionList->yynext; yyp != NULL; yyp = yyp->yynext) + yymerge = yyfalse; + for (yypp = &yyoptionList->yynext; *yypp != NULL; ) { + yySemanticOption* yyp = *yypp; + if (yyidenticalOptions (yybest, yyp)) - yymergeOptionSets (yybest, yyp); + { + yymergeOptionSets (yybest, yyp); + *yypp = yyp->yynext; + } else - switch (yypreference (yybest, yyp)) - { - case 0: - yyreportAmbiguity (yybest, yyp, yystack); - break; - case 1: - yymerge = 1; - break; - case 2: - break; - case 3: - yybest = yyp; - yymerge = 0; - break; - } + { + switch (yypreference (yybest, yyp)) + { + case 0: + yyreportAmbiguity (yybest, yyp, yystack]b4_pure_args[); + break; + case 1: + yymerge = yytrue; + break; + case 2: + break; + case 3: + yybest = yyp; + yymerge = yyfalse; + break; + default: + /* This cannot happen so it is not worth a YYASSERT (yyfalse), + but some compilers complain if the default case is + omitted. */ + break; + } + yypp = &yyp->yynext; + } } if (yymerge) { + yySemanticOption* yyp; int yyprec = yydprec[yybest->yyrule]; - YYCHK (yyresolveAction (yybest, yystack, yyvalp, yylocp YY_USER_ARGS)); + YYCHK (yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[)); for (yyp = yybest->yynext; yyp != NULL; yyp = yyp->yynext) { if (yyprec == yydprec[yyp->yyrule]) { YYSTYPE yyval1; YYLTYPE yydummy; - YYCHK (yyresolveAction (yyp, yystack, &yyval1, &yydummy YY_USER_ARGS)); - *yyvalp = yyuserMerge (yymerger[yyp->yyrule], yyvalp, &yyval1); + YYCHK (yyresolveAction (yyp, yystack, &yyval1, &yydummy]b4_user_args[)); + yyuserMerge (yymerger[yyp->yyrule], yyvalp, &yyval1); } } return yyok; } else - return yyresolveAction (yybest, yystack, yyvalp, yylocp YY_USER_ARGS); + return yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[); } static YYRESULTTAG -yyresolveStack (yyGLRStack* yystack YY_USER_FORMALS) +yyresolveStack (yyGLRStack* yystack]b4_user_formals[) { if (yystack->yysplitPoint != NULL) { @@ -1414,9 +1716,9 @@ yyresolveStack (yyGLRStack* yystack YY_USER_FORMALS) for (yyn = 0, yys = yystack->yytops.yystates[0]; yys != yystack->yysplitPoint; yys = yys->yypred, yyn += 1) - ; + continue; YYCHK (yyresolveStates (yystack->yytops.yystates[0], yyn, yystack - YY_USER_ARGS)); + ]b4_user_args[)); } return yyok; } @@ -1452,30 +1754,34 @@ yycompressStack (yyGLRStack* yystack) } static YYRESULTTAG -yyprocessOneStack (yyGLRStack* yystack, int yyk, +yyprocessOneStack (yyGLRStack* yystack, size_t yyk, size_t yyposn, YYSTYPE* yylvalp, YYLTYPE* yyllocp - YY_USER_FORMALS) + ]b4_pure_formals[) { int yyaction; - const short* yyconflicts; + const short int* yyconflicts; yyRuleNum yyrule; yySymbol* const yytokenp = yystack->yytokenp; while (yystack->yytops.yystates[yyk] != NULL) { yyStateNum yystate = yystack->yytops.yystates[yyk]->yylrState; + YYDPRINTF ((stderr, "Stack %lu Entering state %d\n", + (unsigned long int) yyk, yystate)); + + YYASSERT (yystate != YYFINAL); - assert (yystate != YYFINAL); if (yyisDefaultedState (yystate)) { yyrule = yydefaultAction (yystate); if (yyrule == 0) { - YYDPRINTF ((stderr, "Stack %d dies.\n", yyk)); + YYDPRINTF ((stderr, "Stack %lu dies.\n", + (unsigned long int) yyk)); yymarkStackDeleted (yystack, yyk); return yyok; } - YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse YY_USER_ARGS)); + YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse]b4_user_args[)); } else { @@ -1483,48 +1789,52 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk, { YYDPRINTF ((stderr, "Reading a token: ")); yychar = YYLEX; - *yytokenp = YYTRANSLATE(yychar); - YYDPRINTF ((stderr, "Next token is %s\n", - yytokenName (*yytokenp))); + *yytokenp = YYTRANSLATE (yychar); + YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp); } yygetLRActions (yystate, *yytokenp, &yyaction, &yyconflicts); while (*yyconflicts != 0) { - int yynewStack = yysplitStack (yystack, yyk); - YYDPRINTF ((stderr, "Splitting off stack %d from %d.\n", - yynewStack, yyk)); + size_t yynewStack = yysplitStack (yystack, yyk); + YYDPRINTF ((stderr, "Splitting off stack %lu from %lu.\n", + (unsigned long int) yynewStack, + (unsigned long int) yyk)); YYCHK (yyglrReduce (yystack, yynewStack, - *yyconflicts, yyfalse YY_USER_ARGS)); + *yyconflicts, yyfalse]b4_user_args[)); YYCHK (yyprocessOneStack (yystack, yynewStack, yyposn, - yylvalp, yyllocp YY_USER_ARGS)); + yylvalp, yyllocp]b4_pure_args[)); yyconflicts += 1; } if (yyisShiftAction (yyaction)) { - YYDPRINTF ((stderr, "Shifting token %s on stack %d, ", - yytokenName (*yytokenp), yyk)); - yyglrShift (yystack, yyk, yyaction, yyposn+1, *yylvalp, yyllocp); - YYDPRINTF ((stderr, "which is now in state #%d\n", + YYDPRINTF ((stderr, "On stack %lu, ", (unsigned long int) yyk)); + YY_SYMBOL_PRINT ("shifting", *yytokenp, yylvalp, yyllocp); + yyglrShift (yystack, yyk, yyaction, yyposn+1, + *yylvalp, yyllocp); + YYDPRINTF ((stderr, "Stack %lu now in state #%d\n", + (unsigned long int) yyk, yystack->yytops.yystates[yyk]->yylrState)); break; } else if (yyisErrorAction (yyaction)) { - YYDPRINTF ((stderr, "Stack %d dies.\n", yyk)); + YYDPRINTF ((stderr, "Stack %lu dies.\n", + (unsigned long int) yyk)); yymarkStackDeleted (yystack, yyk); break; } else - YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse YY_USER_ARGS)); + YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse]b4_user_args[)); } } return yyok; } static void -yyreportParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) +yyreportSyntaxError (yyGLRStack* yystack, + YYSTYPE* yylvalp, YYLTYPE* yyllocp]b4_user_formals[) { /* `Unused' warnings. */ (void) yylvalp; @@ -1534,87 +1844,146 @@ yyreportParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) { #if YYERROR_VERBOSE yySymbol* const yytokenp = yystack->yytokenp; - int yyn, yyx, yycount; - size_t yysize; - const char* yyprefix; - char* yyp; - char* yymsg; + int yyn; yyn = yypact[yystack->yytops.yystates[0]->yylrState]; if (YYPACT_NINF < yyn && yyn < YYLAST) { - yycount = 0; + size_t yysize0 = yytnamerr (NULL, yytokenName (*yytokenp)); + size_t yysize = yysize0; + size_t yysize1; + yybool yysize_overflow = yyfalse; + char* yymsg = NULL; + enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; + char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; + int yyx; + char *yyfmt; + char const *yyf; + static char const yyunexpected[] = "syntax error, unexpected %s"; + static char const yyexpecting[] = ", expecting %s"; + static char const yyor[] = " or %s"; + char yyformat[sizeof yyunexpected + + sizeof yyexpecting - 1 + + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2) + * (sizeof yyor - 1))]; + char const *yyprefix = yyexpecting; + /* Start YYX at -YYN if negative to avoid negative indexes in YYCHECK. */ - yysize = sizeof ("parse error, unexpected ") - + strlen (yytokenName (*yytokenp)); - yyprefix = ", expecting "; - for (yyx = yyn < 0 ? -yyn : 0; yyx < yytname_size && yycount <= 5; - yyx += 1) + int yyxbegin = yyn < 0 ? -yyn : 0; + + /* Stay within bounds of both yycheck and yytname. */ + int yychecklim = YYLAST - yyn; + int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; + int yycount = 1; + + yyarg[0] = yytokenName (*yytokenp); + yyfmt = yystpcpy (yyformat, yyunexpected); + + for (yyx = yyxbegin; yyx < yyxend; ++yyx) if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) - yysize += strlen (yytokenName (yyx)) + strlen (yyprefix), - yycount += 1, yyprefix = " or "; - yymsg = yyp = (char*) malloc (yysize); - sprintf (yyp, "parse error, unexpected %s", - yytokenName (*yytokenp)); - yyp += strlen (yyp); - if (yycount < 5) - { - yyprefix = ", expecting "; - for (yyx = yyn < 0 ? -yyn : 0; yyx < yytname_size; yyx += 1) - if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) + { + if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) { - sprintf (yyp, "%s%s", yyprefix, yytokenName (yyx)); - yyp += strlen (yyp); - yyprefix = " or "; + yycount = 1; + yysize = yysize0; + yyformat[sizeof yyunexpected - 1] = '\0'; + break; } + yyarg[yycount++] = yytokenName (yyx); + yysize1 = yysize + yytnamerr (NULL, yytokenName (yyx)); + yysize_overflow |= yysize1 < yysize; + yysize = yysize1; + yyfmt = yystpcpy (yyfmt, yyprefix); + yyprefix = yyor; + } + + yyf = YY_(yyformat); + yysize1 = yysize + strlen (yyf); + yysize_overflow |= yysize1 < yysize; + yysize = yysize1; + + if (!yysize_overflow) + yymsg = (char *) YYMALLOC (yysize); + + if (yymsg) + { + char *yyp = yymsg; + int yyi = 0; + while ((*yyp = *yyf)) + { + if (*yyp == '%' && yyf[1] == 's' && yyi < yycount) + { + yyp += yytnamerr (yyp, yyarg[yyi++]); + yyf += 2; + } + else + { + yyp++; + yyf++; + } + } + yyerror (]b4_lyyerror_args[yymsg); + YYFREE (yymsg); + } + else + { + yyerror (]b4_lyyerror_args[YY_("syntax error")); + yyMemoryExhausted (yystack); } - yyerror (yymsg); - free (yymsg); } else -#endif - yyerror ("parse error"); +#endif /* YYERROR_VERBOSE */ + yyerror (]b4_lyyerror_args[YY_("syntax error")); yynerrs += 1; } } /* Recover from a syntax error on YYSTACK, assuming that YYTOKENP, YYLVALP, and YYLLOCP point to the syntactic category, semantic - value, and location of the lookahead. */ + value, and location of the look-ahead. */ static void -yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) +yyrecoverSyntaxError (yyGLRStack* yystack, + YYSTYPE* yylvalp, + YYLTYPE* YYOPTIONAL_LOC (yyllocp) + ]b4_user_formals[) { yySymbol* const yytokenp = yystack->yytokenp; size_t yyk; int yyj; - if (yystack->yyerrState == 0) - yystack->yyerrState = 3; - else if (yystack->yyerrState == 3) + if (yystack->yyerrState == 3) /* We just shifted the error token and (perhaps) took some reductions. Skip tokens until we can proceed. */ while (yytrue) { if (*yytokenp == YYEOF) - yyFail (yystack, NULL); + yyFail (yystack][]b4_lpure_args[, NULL); if (*yytokenp != YYEMPTY) - YYDPRINTF ((stderr, "Discarding token %s\n", - yytokenName (*yytokenp))); + {]b4_location_if([[ + /* We throw away the lookahead, but the error range + of the shifted error token must take it into account. */ + yyGLRState *yys = yystack->yytops.yystates[0]; + yyGLRStackItem yyerror_range[3]; + yyerror_range[1].yystate.yyloc = yys->yyloc; + yyerror_range[2].yystate.yyloc = *yyllocp; + YYLLOC_DEFAULT (yys->yyloc, yyerror_range, 2);]])[ + yydestruct ("Error: discarding", + *yytokenp, yylvalp]b4_location_if([, yyllocp])[); + } YYDPRINTF ((stderr, "Reading a token: ")); yychar = YYLEX; *yytokenp = YYTRANSLATE (yychar); - YYDPRINTF ((stderr, "Next token is %s\n", yytokenName (*yytokenp))); + YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp); yyj = yypact[yystack->yytops.yystates[0]->yylrState]; - if (yyj == YYPACT_NINF) - /* Something's not right; we shouldn't be here. */ - yyFail (yystack, NULL); + if (yyis_pact_ninf (yyj)) + return; yyj += *yytokenp; if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != *yytokenp) { if (yydefact[yystack->yytops.yystates[0]->yylrState] != 0) return; } - else if (yytable[yyj] != 0 && yytable[yyj] != YYTABLE_NINF) + else if (yytable[yyj] != 0 && ! yyis_table_ninf (yytable[yyj])) return; } @@ -1623,44 +1992,59 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) if (yystack->yytops.yystates[yyk] != NULL) break; if (yyk >= yystack->yytops.yysize) - yyFail (yystack, NULL); + yyFail (yystack][]b4_lpure_args[, NULL); for (yyk += 1; yyk < yystack->yytops.yysize; yyk += 1) yymarkStackDeleted (yystack, yyk); yyremoveDeletes (yystack); yycompressStack (yystack); /* Now pop stack until we find a state that shifts the error token. */ + yystack->yyerrState = 3; while (yystack->yytops.yystates[0] != NULL) { - yyj = yypact[yystack->yytops.yystates[0]->yylrState] + YYTERROR; - if (yyj != YYPACT_NINF + YYTERROR && yyj >= 0 && yyj <= YYLAST && - yycheck[yyj] == YYTERROR && yyisShiftAction (yytable[yyj])) + yyGLRState *yys = yystack->yytops.yystates[0]; + yyj = yypact[yys->yylrState]; + if (! yyis_pact_ninf (yyj)) { - yyglrShift (yystack, 0, yytable[yyj], - yystack->yytops.yystates[0]->yyposn, *yylvalp, yyllocp); - break; + yyj += YYTERROR; + if (0 <= yyj && yyj <= YYLAST && yycheck[yyj] == YYTERROR + && yyisShiftAction (yytable[yyj])) + { + /* Shift the error token having adjusted its location. */ + YYLTYPE yyerrloc;]b4_location_if([[ + yystack->yyerror_range[2].yystate.yyloc = *yyllocp; + YYLLOC_DEFAULT (yyerrloc, yystack->yyerror_range, 2);]])[ + YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]], + yylvalp, &yyerrloc); + yyglrShift (yystack, 0, yytable[yyj], + yys->yyposn, *yylvalp, &yyerrloc); + yys = yystack->yytops.yystates[0]; + break; + } } - yystack->yytops.yystates[0] = yystack->yytops.yystates[0]->yypred; +]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[ + yydestroyGLRState ("Error: popping", yys); + yystack->yytops.yystates[0] = yys->yypred; yystack->yynextFree -= 1; yystack->yyspaceLeft += 1; } if (yystack->yytops.yystates[0] == NULL) - yyFail (yystack, NULL); + yyFail (yystack][]b4_lpure_args[, NULL); } #define YYCHK1(YYE) \ do { \ switch (YYE) { \ - default: \ + case yyok: \ break; \ case yyabort: \ - yystack.yyerrflag = 1; \ - goto yyDone; \ + goto yyabortlab; \ case yyaccept: \ - yystack.yyerrflag = 0; \ - goto yyDone; \ + goto yyacceptlab; \ case yyerr: \ goto yyuser_error; \ + default: \ + goto yybuglab; \ } \ } while (0) @@ -1671,6 +2055,7 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) ]b4_c_ansi_function_def([yyparse], [int], b4_parse_param)[ { + int yyresult; yySymbol yytoken; yyGLRStack yystack; size_t yyposn; @@ -1685,16 +2070,37 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) YYSTYPE* const yylvalp = &yylval; YYLTYPE* const yyllocp = &yylloc; - yyinitGLRStack (&yystack, YYINITDEPTH); - yystack.yytokenp = &yytoken; - YYDPRINTF ((stderr, "Starting parse\n")); - if (setjmp (yystack.yyexception_buffer) != 0) - goto yyDone; - - yyglrShift (&yystack, 0, 0, 0, yyval_default, &yyloc_default); yytoken = YYEMPTY; + yylval = yyval_default; +]b4_location_if([ +#if YYLTYPE_IS_TRIVIAL + yylloc.first_line = yylloc.last_line = 1; + yylloc.first_column = yylloc.last_column = 0; +#endif +]) +m4_ifdef([b4_initial_action], [ +m4_pushdef([b4_at_dollar], [yylloc])dnl +m4_pushdef([b4_dollar_dollar], [yylval])dnl + /* User initialization code. */ + b4_initial_action +m4_popdef([b4_dollar_dollar])dnl +m4_popdef([b4_at_dollar])dnl +/* Line __line__ of glr.c. */ +b4_syncline([@oline@], [@ofile@])])dnl +[ + if (! yyinitGLRStack (&yystack, YYINITDEPTH)) + goto yyexhaustedlab; + switch (YYSETJMP (yystack.yyexception_buffer)) + { + case 0: break; + case 1: goto yyabortlab; + case 2: goto yyexhaustedlab; + default: goto yybuglab; + } + yystack.yytokenp = &yytoken; + yyglrShift (&yystack, 0, 0, 0, yylval, &yylloc); yyposn = 0; while (yytrue) @@ -1702,26 +2108,27 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) /* For efficiency, we have two loops, the first of which is specialized to deterministic operation (single stack, no potential ambiguity). */ - /* Standard mode */ while (yytrue) { yyRuleNum yyrule; int yyaction; - const short* yyconflicts; + const short int* yyconflicts; yyStateNum yystate = yystack.yytops.yystates[0]->yylrState; + YYDPRINTF ((stderr, "Entering state %d\n", yystate)); if (yystate == YYFINAL) - goto yyDone; + goto yyacceptlab; if (yyisDefaultedState (yystate)) { yyrule = yydefaultAction (yystate); if (yyrule == 0) { - yyreportParseError (&yystack, yylvalp, yyllocp); +]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[ + yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[); goto yyuser_error; } - YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue YY_USER_ARGS)); + YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_user_args[)); } else { @@ -1730,42 +2137,39 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) YYDPRINTF ((stderr, "Reading a token: ")); yychar = YYLEX; yytoken = YYTRANSLATE (yychar); - YYDPRINTF ((stderr, "Next token is %s\n", - yytokenName (yytoken))); + YY_SYMBOL_PRINT ("Next token is", yytoken, yylvalp, yyllocp); } yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts); if (*yyconflicts != 0) break; if (yyisShiftAction (yyaction)) { - YYDPRINTF ((stderr, "Shifting token %s, ", - yytokenName (yytoken))); + YY_SYMBOL_PRINT ("Shifting", yytoken, yylvalp, yyllocp); if (yytoken != YYEOF) yytoken = YYEMPTY; yyposn += 1; yyglrShift (&yystack, 0, yyaction, yyposn, yylval, yyllocp); if (0 < yystack.yyerrState) yystack.yyerrState -= 1; - YYDPRINTF ((stderr, "Entering state %d\n", - yystack.yytops.yystates[0]->yylrState)); } else if (yyisErrorAction (yyaction)) { - yyreportParseError (&yystack, yylvalp, yyllocp); +]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[ + yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[); goto yyuser_error; } else - YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue YY_USER_ARGS)); + YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_user_args[)); } } while (yytrue) { - int yys; - int yyn = yystack.yytops.yysize; + size_t yys; + size_t yyn = yystack.yytops.yysize; for (yys = 0; yys < yyn; yys += 1) YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn, - yylvalp, yyllocp YY_USER_ARGS)); + yylvalp, yyllocp]b4_lpure_args[)); yytoken = YYEMPTY; yyposn += 1; yyremoveDeletes (&yystack); @@ -1773,15 +2177,16 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) { yyundeleteLastStack (&yystack); if (yystack.yytops.yysize == 0) - yyFail (&yystack, "parse error"); - YYCHK1 (yyresolveStack (&yystack YY_USER_ARGS)); + yyFail (&yystack][]b4_lpure_args[, YY_("syntax error")); + YYCHK1 (yyresolveStack (&yystack]b4_user_args[)); YYDPRINTF ((stderr, "Returning to deterministic operation.\n")); - yyreportParseError (&yystack, yylvalp, yyllocp); +]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[ + yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[); goto yyuser_error; } else if (yystack.yytops.yysize == 1) { - YYCHK1 (yyresolveStack (&yystack YY_USER_ARGS)); + YYCHK1 (yyresolveStack (&yystack]b4_user_args[)); YYDPRINTF ((stderr, "Returning to deterministic operation.\n")); yycompressStack (&yystack); break; @@ -1789,19 +2194,59 @@ yyrecoverParseError (yyGLRStack* yystack, YYSTYPE* yylvalp, YYLTYPE* yyllocp) } continue; yyuser_error: - yyrecoverParseError (&yystack, yylvalp, yyllocp); + yyrecoverSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[); yyposn = yystack.yytops.yystates[0]->yyposn; } - yyDone: - ; - yyfreeGLRStack (&yystack); - return yystack.yyerrflag; + yyacceptlab: + yyresult = 0; + goto yyreturn; + + yybuglab: + YYASSERT (yyfalse); + /* Fall through. */ + + yyabortlab: + yyresult = 1; + goto yyreturn; + + yyexhaustedlab: + yyerror (]b4_lyyerror_args[YY_("memory exhausted")); + yyresult = 2; + /* Fall through. */ + + yyreturn: + if (yytoken != YYEOF && yytoken != YYEMPTY) + yydestruct ("Cleanup: discarding lookahead", + yytoken, yylvalp]b4_location_if([, yyllocp])[); + + /* If the stack is well-formed, pop the stack until it is empty, + destroying its entries as we go. But free the stack regardless + of whether it is well-formed. */ + if (yystack.yyitems) + { + yyGLRState** yystates = yystack.yytops.yystates; + if (yystates) + while (yystates[0]) + { + yyGLRState *yys = yystates[0]; +]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]] +)[ yydestroyGLRState ("Cleanup: popping", yys); + yystates[0] = yys->yypred; + yystack.yynextFree -= 1; + yystack.yyspaceLeft += 1; + } + yyfreeGLRStack (&yystack); + } + + return yyresult; } /* DEBUGGING ONLY */ -static void yypstack (yyGLRStack* yystack, int yyk) ATTRIBUTE_UNUSED; -static void yypdumpstack (yyGLRStack* yystack) ATTRIBUTE_UNUSED; +#ifdef YYDEBUG +static void yypstack (yyGLRStack* yystack, size_t yyk) + __attribute__ ((__unused__)); +static void yypdumpstack (yyGLRStack* yystack) __attribute__ ((__unused__)); static void yy_yypstack (yyGLRState* yys) @@ -1811,7 +2256,7 @@ yy_yypstack (yyGLRState* yys) yy_yypstack (yys->yypred); fprintf (stderr, " -> "); } - fprintf (stderr, "%d@%lu", yys->yylrState, (unsigned long) yys->yyposn); + fprintf (stderr, "%d@@%lu", yys->yylrState, (unsigned long int) yys->yyposn); } static void @@ -1825,12 +2270,12 @@ yypstates (yyGLRState* yyst) } static void -yypstack (yyGLRStack* yystack, int yyk) +yypstack (yyGLRStack* yystack, size_t yyk) { yypstates (yystack->yytops.yystates[yyk]); } -#define YYINDEX(YYX) \ +#define YYINDEX(YYX) \ ((YYX) == NULL ? -1 : (yyGLRStackItem*) (YYX) - yystack->yyitems) @@ -1841,70 +2286,74 @@ yypdumpstack (yyGLRStack* yystack) size_t yyi; for (yyp = yystack->yyitems; yyp < yystack->yynextFree; yyp += 1) { - fprintf (stderr, "%3lu. ", (unsigned long) (yyp - yystack->yyitems)); - if (*(bool*) yyp) + fprintf (stderr, "%3lu. ", (unsigned long int) (yyp - yystack->yyitems)); + if (*(yybool *) yyp) { fprintf (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld", yyp->yystate.yyresolved, yyp->yystate.yylrState, - (unsigned long) yyp->yystate.yyposn, - (long) YYINDEX (yyp->yystate.yypred)); + (unsigned long int) yyp->yystate.yyposn, + (long int) YYINDEX (yyp->yystate.yypred)); if (! yyp->yystate.yyresolved) fprintf (stderr, ", firstVal: %ld", - (long) YYINDEX (yyp->yystate.yysemantics.yyfirstVal)); + (long int) YYINDEX (yyp->yystate.yysemantics.yyfirstVal)); } else { fprintf (stderr, "Option. rule: %d, state: %ld, next: %ld", yyp->yyoption.yyrule, - (long) YYINDEX (yyp->yyoption.yystate), - (long) YYINDEX (yyp->yyoption.yynext)); + (long int) YYINDEX (yyp->yyoption.yystate), + (long int) YYINDEX (yyp->yyoption.yynext)); } fprintf (stderr, "\n"); } fprintf (stderr, "Tops:"); for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1) - fprintf (stderr, "%lu: %ld; ", (unsigned long) yyi, - (long) YYINDEX (yystack->yytops.yystates[yyi])); + fprintf (stderr, "%lu: %ld; ", (unsigned long int) yyi, + (long int) YYINDEX (yystack->yytops.yystates[yyi])); fprintf (stderr, "\n"); } +#endif ] b4_epilogue m4_if(b4_defines_flag, 0, [], -[#output "b4_output_header_name" -b4_copyright([Skeleton parser for GLR parsing with Bison], [2002]) -#ifndef b4_header_guard -# define b4_header_guard +[@output @output_header_name@ +b4_copyright([Skeleton parser for GLR parsing with Bison], + [2002, 2003, 2004, 2005]) -b4_token_defines(b4_tokens) +b4_token_enums(b4_tokens) -#ifndef YYSTYPE +#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) m4_ifdef([b4_stype], -[#line b4_stype_line "b4_filename" -typedef union b4_stype yystype; -/* Line __line__ of __file__. */ -#line __oline__ "__ofile__"], -[typedef int yystype;]) -# define YYSTYPE yystype +[b4_syncline([b4_stype_line], [b4_file_name]) +typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE; +/* Line __line__ of glr.c. */ +b4_syncline([@oline@], [@ofile@])], +[typedef int YYSTYPE;]) +# define YYSTYPE_IS_DECLARED 1 +# define YYSTYPE_IS_TRIVIAL 1 #endif b4_pure_if([], [extern YYSTYPE b4_prefix[]lval;]) -b4_location_if( -[#ifndef YYLTYPE -typedef struct yyltype +#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED) +typedef struct YYLTYPE { +b4_location_if([ int first_line; int first_column; int last_line; int last_column; -} yyltype; -# define YYLTYPE yyltype +],[ + char yydummy; +]) +} YYLTYPE; +# define YYLTYPE_IS_DECLARED 1 +# define YYLTYPE_IS_TRIVIAL 1 #endif -m4_if(b4_pure, [0], +b4_location_if([b4_pure_if([], [extern YYLTYPE b4_prefix[]lloc;]) ]) -#endif /* not b4_header_guard */ ])