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glr.c
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2653 lines (2360 loc) · 73.8 KB
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-*- C -*-
# GLR skeleton for Bison
# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
# Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
m4_include(b4_pkgdatadir/[c.m4])
## ---------------- ##
## Default values. ##
## ---------------- ##
# Stack parameters.
m4_define_default([b4_stack_depth_max], [10000])
m4_define_default([b4_stack_depth_init], [200])
## ------------------------ ##
## Pure/impure interfaces. ##
## ------------------------ ##
b4_define_flag_if([pure])
# If glr.cc is including this file and thus has already set b4_pure_flag, don't
# change the value of b4_pure_flag, and don't record a use of api.pure.
m4_ifndef([b4_pure_flag],
[b4_percent_define_default([[api.pure]], [[false]])
m4_define([b4_pure_flag],
[b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])])
# b4_user_formals
# ---------------
# The possible parse-params formal arguments preceded by a comma.
#
# This is not shared with yacc.c in c.m4 because GLR relies on ISO C
# formal argument declarations.
m4_define([b4_user_formals],
[m4_ifset([b4_parse_param], [, b4_c_ansi_formals(b4_parse_param)])])
# b4_lex_param
# ------------
# Accumule in b4_lex_param all the yylex arguments.
# Yes, this is quite ugly...
m4_define([b4_lex_param],
m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
b4_locations_if([, [[YYLTYPE *], [&yylloc]]])])dnl
m4_ifdef([b4_lex_param], [, ]b4_lex_param)))
# b4_yyerror_args
# ---------------
# Optional effective arguments passed to yyerror: user args plus yylloc, and
# a trailing comma.
m4_define([b4_yyerror_args],
[b4_pure_if([b4_locations_if([yylocp, ])])dnl
m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
# b4_lyyerror_args
# ----------------
# Same as above, but on the lookahead, hence &yylloc instead of yylocp.
m4_define([b4_lyyerror_args],
[b4_pure_if([b4_locations_if([&yylloc, ])])dnl
m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
# b4_pure_args
# ------------
# Same as b4_yyerror_args, but with a leading comma.
m4_define([b4_pure_args],
[b4_pure_if([b4_locations_if([, yylocp])])[]b4_user_args])
# b4_lpure_args
# -------------
# Same as above, but on the lookahead, hence &yylloc instead of yylocp.
m4_define([b4_lpure_args],
[b4_pure_if([b4_locations_if([, &yylloc])])[]b4_user_args])
# b4_pure_formals
# ---------------
# Arguments passed to yyerror: user formals plus yylocp.
m4_define([b4_pure_formals],
[b4_pure_if([b4_locations_if([, YYLTYPE *yylocp])])[]b4_user_formals])
## ----------------- ##
## Semantic Values. ##
## ----------------- ##
# b4_lhs_value([TYPE])
# --------------------
# Expansion of $<TYPE>$.
m4_define([b4_lhs_value],
[((*yyvalp)[]m4_ifval([$1], [.$1]))])
# b4_rhs_value(RULE-LENGTH, NUM, [TYPE])
# --------------------------------------
# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
# symbols on RHS.
m4_define([b4_rhs_value],
[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))])
## ----------- ##
## Locations. ##
## ----------- ##
# b4_lhs_location()
# -----------------
# Expansion of @$.
m4_define([b4_lhs_location],
[(*yylocp)])
# b4_rhs_location(RULE-LENGTH, NUM)
# ---------------------------------
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yyloc)])
## -------------- ##
## Output files. ##
## -------------- ##
# We do want M4 expansion after # for CPP macros.
m4_changecom()
m4_divert_push(0)dnl
@output(b4_parser_file_name@)
b4_copyright([Skeleton implementation for Bison GLR parsers in C],
[2002, 2003, 2004, 2005, 2006])
[
/* C GLR parser skeleton written by Paul Hilfinger. */
]b4_identification
b4_percent_code_get([[top]])[]dnl
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
#define yylval b4_prefix[]lval
#define yychar b4_prefix[]char
#define yydebug b4_prefix[]debug
#define yynerrs b4_prefix[]nerrs
#define yylloc b4_prefix[]lloc])[
/* Copy the first part of user declarations. */
]b4_user_pre_prologue
dnl # b4_shared_declarations
dnl # ----------------------
dnl # Declaration that might either go into the header (if --defines)
dnl # or open coded in the parser body.
m4_define([b4_shared_declarations],
[b4_percent_code_get([[requires]])[]dnl
b4_token_enums(b4_tokens)
[#ifndef YYSTYPE
]m4_ifdef([b4_stype],
[[typedef union ]b4_union_name[
{
]b4_user_stype[
} YYSTYPE;
# define YYSTYPE_IS_TRIVIAL 1]],
[m4_if(b4_tag_seen_flag, 0,
[[typedef int YYSTYPE;
# define YYSTYPE_IS_TRIVIAL 1]])])[
#endif
#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
typedef struct YYLTYPE
{
]b4_locations_if([
int first_line;
int first_column;
int last_line;
int last_column;
],[
char yydummy;
])[
} YYLTYPE;
# define YYLTYPE_IS_DECLARED 1
# define YYLTYPE_IS_TRIVIAL 1
#endif
]b4_percent_code_get([[provides]])[]dnl
])
b4_defines_if([[#include "@basename(]b4_spec_defines_file[@)"]],
[b4_shared_declarations])[
/* Enabling traces. */
#ifndef YYDEBUG
# define YYDEBUG ]b4_debug_flag[
#endif
/* Enabling verbose error messages. */
#ifdef YYERROR_VERBOSE
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
# define YYERROR_VERBOSE ]b4_error_verbose_flag[
#endif
/* Enabling the token table. */
#ifndef YYTOKEN_TABLE
# define YYTOKEN_TABLE ]b4_token_table[
#endif
/* 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;
/* Copy the second part of user declarations. */
]b4_user_post_prologue
b4_percent_code_get[]dnl
[#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef YY_
# if 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
/* Suppress unused-variable warnings by "using" E. */
#if ! defined lint || defined __GNUC__
# define YYUSE(e) ((void) (e))
#else
# define YYUSE(e) /* empty */
#endif
/* Identity function, used to suppress warnings about constant conditions. */
#ifndef lint
# define YYID(n) (n)
#else
]b4_c_function_def([YYID], [static int], [[int i], [i]])[
{
return i;
}
#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 <setjmp.h>
# define YYJMP_BUF jmp_buf
# define YYSETJMP(env) setjmp (env)
# define YYLONGJMP(env, val) longjmp (env, val)
#endif
/*-----------------.
| GCC extensions. |
`-----------------*/
#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__)
# define __attribute__(Spec) /* empty */
# endif
#endif
]b4_locations_if([#define YYOPTIONAL_LOC(Name) Name],[
#ifdef __cplusplus
# define YYOPTIONAL_LOC(Name) /* empty */
#else
# define YYOPTIONAL_LOC(Name) Name __attribute__ ((__unused__))
#endif])[
#ifndef YYASSERT
# define YYASSERT(condition) ((void) ((condition) || (abort (), 0)))
#endif
/* YYFINAL -- State number of the termination state. */
#define YYFINAL ]b4_final_state_number[
/* YYLAST -- Last index in YYTABLE. */
#define YYLAST ]b4_last[
/* YYNTOKENS -- Number of terminals. */
#define YYNTOKENS ]b4_tokens_number[
/* YYNNTS -- Number of nonterminals. */
#define YYNNTS ]b4_nterms_number[
/* YYNRULES -- Number of rules. */
#define YYNRULES ]b4_rules_number[
/* YYNRULES -- Number of states. */
#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 int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */
static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
{
]b4_translate[
};
#if YYDEBUG
/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
YYRHS. */
static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
{
]b4_prhs[
};
/* YYRHS -- A `-1'-separated list of the rules' RHS. */
static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
{
]b4_rhs[
};
/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
static const ]b4_int_type_for([b4_rline])[ yyrline[] =
{
]b4_rline[
};
#endif
#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[
};
#endif
/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
static const ]b4_int_type_for([b4_r1])[ yyr1[] =
{
]b4_r1[
};
/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
static const ]b4_int_type_for([b4_r2])[ yyr2[] =
{
]b4_r2[
};
/* YYDPREC[RULE-NUM] -- Dynamic precedence of rule #RULE-NUM (0 if none). */
static const ]b4_int_type_for([b4_dprec])[ yydprec[] =
{
]b4_dprec[
};
/* YYMERGER[RULE-NUM] -- Index of merging function for rule #RULE-NUM. */
static const ]b4_int_type_for([b4_merger])[ yymerger[] =
{
]b4_merger[
};
/* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
doesn't specify something else to do. Zero means the default is an
error. */
static const ]b4_int_type_for([b4_defact])[ yydefact[] =
{
]b4_defact[
};
/* YYPDEFGOTO[NTERM-NUM]. */
static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
{
]b4_defgoto[
};
/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
STATE-NUM. */
#define YYPACT_NINF ]b4_pact_ninf[
static const ]b4_int_type_for([b4_pact])[ yypact[] =
{
]b4_pact[
};
/* YYPGOTO[NTERM-NUM]. */
static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
{
]b4_pgoto[
};
/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If
positive, shift that token. If negative, reduce the rule which
number is the opposite. If zero, do what YYDEFACT says.
If YYTABLE_NINF, syntax error. */
#define YYTABLE_NINF ]b4_table_ninf[
static const ]b4_int_type_for([b4_table])[ yytable[] =
{
]b4_table[
};
/* YYCONFLP[YYPACT[STATE-NUM]] -- Pointer into YYCONFL of start of
list of conflicting reductions corresponding to action entry for
state STATE-NUM in yytable. 0 means no conflicts. The list in
yyconfl is terminated by a rule number of 0. */
static const ]b4_int_type_for([b4_conflict_list_heads])[ yyconflp[] =
{
]b4_conflict_list_heads[
};
/* 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 int *".
dnl We probably ought to introduce a type for confl.
[static const short int yyconfl[] =
{
]b4_conflicting_rules[
};
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)[
/* Error token number */
#define YYTERROR 1
/* 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_locations_if([[
#define YYRHSLOC(Rhs, K) ((Rhs)[K].yystate.yyloc)
#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N) \
do \
if (YYID (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 (YYID (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(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)[
]b4_pure_if(
[
#undef yynerrs
#define yynerrs (yystackp->yyerrcnt)
#undef yychar
#define yychar (yystackp->yyrawchar)
#undef yylval
#define yylval (yystackp->yyval)
#undef yylloc
#define yylloc (yystackp->yyloc)
m4_if(b4_prefix[], [yy], [],
[#define b4_prefix[]nerrs yynerrs
#define b4_prefix[]char yychar
#define b4_prefix[]lval yylval
#define b4_prefix[]lloc yylloc])],
[YYSTYPE yylval;
YYLTYPE yylloc;
int yynerrs;
int yychar;])[
static const int YYEOF = 0;
static const int YYEMPTY = -2;
typedef enum { yyok, yyaccept, yyabort, yyerr } YYRESULTTAG;
#define YYCHK(YYE) \
do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; } \
while (YYID (0))
#if YYDEBUG
# ifndef YYFPRINTF
# define YYFPRINTF fprintf
# endif
# define YYDPRINTF(Args) \
do { \
if (yydebug) \
YYFPRINTF Args; \
} while (YYID (0))
]b4_yy_symbol_print_generate([b4_c_ansi_function_def])[
# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
do { \
if (yydebug) \
{ \
YYFPRINTF (stderr, "%s ", Title); \
yy_symbol_print (stderr, Type, \
Value]b4_locations_if([, Location])[]b4_user_args[); \
YYFPRINTF (stderr, "\n"); \
} \
} while (YYID (0))
/* Nonzero means print parse trace. It is left uninitialized so that
multiple parsers can coexist. */
int yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
#endif /* !YYDEBUG */
/* YYINITDEPTH -- initial size of the parser's stacks. */
#ifndef YYINITDEPTH
# define YYINITDEPTH ]b4_stack_depth_init[
#endif
/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
if the built-in stack extension method is used).
Do not make this value too large; the results are undefined if
SIZE_MAX < YYMAXDEPTH * sizeof (GLRStackItem)
evaluated with infinite-precision integer arithmetic. */
#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 yyexpandGLRStack before the
stack is expanded, thus insuring that all necessary pointers get
properly redirected to new data. */
#define YYHEADROOM 2
#ifndef YYSTACKEXPANDABLE
# if (! defined __cplusplus \
|| (]b4_locations_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 YYSTACKEXPANDABLE
# define YY_RESERVE_GLRSTACK(Yystack) \
do { \
if (Yystack->yyspaceLeft < YYHEADROOM) \
yyexpandGLRStack (Yystack); \
} while (YYID (0))
#else
# define YY_RESERVE_GLRSTACK(Yystack) \
do { \
if (Yystack->yyspaceLeft < YYHEADROOM) \
yyMemoryExhausted (Yystack); \
} while (YYID (0))
#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;
/** Rule numbers, as in LALR(1) machine */
typedef int yyRuleNum;
/** Grammar symbol */
typedef short int yySymbol;
/** Item references, as in LALR(1) machine */
typedef short int yyItemNum;
typedef struct yyGLRState yyGLRState;
typedef struct yyGLRStateSet yyGLRStateSet;
typedef struct yySemanticOption yySemanticOption;
typedef union yyGLRStackItem yyGLRStackItem;
typedef struct yyGLRStack yyGLRStack;
struct yyGLRState {
/** 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;
};
struct yyGLRStateSet {
yyGLRState** yystates;
/** During nondeterministic operation, yylookaheadNeeds tracks which
* stacks have actually needed the current lookahead. During deterministic
* operation, yylookaheadNeeds[0] is not maintained since it would merely
* duplicate yychar != YYEMPTY. */
yybool* yylookaheadNeeds;
size_t yysize, yycapacity;
};
struct yySemanticOption {
/** 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;
/** The lookahead for this reduction. */
int yyrawchar;
YYSTYPE yyval;
YYLTYPE yyloc;
/** 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 yyerrState;
]b4_locations_if([[ /* To compute the location of the error token. */
yyGLRStackItem yyerror_range[3];]])[
]b4_pure_if(
[
int yyerrcnt;
int yyrawchar;
YYSTYPE yyval;
YYLTYPE yyloc;
])[
YYJMP_BUF yyexception_buffer;
yyGLRStackItem* yyitems;
yyGLRStackItem* yynextFree;
size_t yyspaceLeft;
yyGLRState* yysplitPoint;
yyGLRState* yylastDeleted;
yyGLRStateSet yytops;
};
#if YYSTACKEXPANDABLE
static void yyexpandGLRStack (yyGLRStack* yystackp);
#endif
static void yyFail (yyGLRStack* yystackp]b4_pure_formals[, const char* yymsg)
__attribute__ ((__noreturn__));
static void
yyFail (yyGLRStack* yystackp]b4_pure_formals[, const char* yymsg)
{
if (yymsg != NULL)
yyerror (]b4_yyerror_args[yymsg);
YYLONGJMP (yystackp->yyexception_buffer, 1);
}
static void yyMemoryExhausted (yyGLRStack* yystackp)
__attribute__ ((__noreturn__));
static void
yyMemoryExhausted (yyGLRStack* yystackp)
{
YYLONGJMP (yystackp->yyexception_buffer, 2);
}
#if YYDEBUG || YYERROR_VERBOSE
/** 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. */
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,
* yyerr for YYERROR, yyabort for YYABORT. */
/*ARGSUSED*/ static YYRESULTTAG
yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
YYSTYPE* yyvalp,
YYLTYPE* YYOPTIONAL_LOC (yylocp),
yyGLRStack* yystackp
]b4_user_formals[)
{
yybool yynormal __attribute__ ((__unused__)) =
(yystackp->yysplitPoint == NULL);
int yylow;
]b4_parse_param_use[]dnl
[# undef yyerrok
# define yyerrok (yystackp->yyerrState = 0)
# undef YYACCEPT
# define YYACCEPT return yyaccept
# undef YYABORT
# define YYABORT return yyabort
# undef YYERROR
# define YYERROR return yyerrok, yyerr
# undef YYRECOVERING
# define YYRECOVERING() (yystackp->yyerrState != 0)
# undef yyclearin
# define yyclearin (yychar = YYEMPTY)
# undef YYFILL
# define YYFILL(N) yyfill (yyvsp, &yylow, N, yynormal)
# undef YYBACKUP
# define YYBACKUP(Token, Value) \
return yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")), \
yyerrok, yyerr
yylow = 1;
if (yyrhslen == 0)
*yyvalp = yyval_default;
else
*yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;
YYLLOC_DEFAULT ((*yylocp), (yyvsp - yyrhslen), yyrhslen);
]b4_locations_if([[ yystackp->yyerror_range[1].yystate.yyloc = *yylocp;
]])[
switch (yyn)
{
]b4_user_actions[
default: break;
}
return yyok;
# undef yyerrok
# undef YYABORT
# undef YYACCEPT
# undef YYERROR
# undef YYBACKUP
# undef yyclearin
# undef YYRECOVERING
}
/*ARGSUSED*/ static void
yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
{
YYUSE (yy0);
YYUSE (yy1);
switch (yyn)
{
]b4_mergers[
default: break;
}
}
/* Bison grammar-table manipulation. */
]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]b4_user_formals[)
{
if (yys->yyresolved)
yydestruct (yymsg, yystos[yys->yylrState],
&yys->yysemantics.yysval]b4_locations_if([, &yys->yyloc])[]b4_user_args[);
else
{
#if YYDEBUG
if (yydebug)
{
if (yys->yysemantics.yyfirstVal)
YYFPRINTF (stderr, "%s unresolved ", yymsg);
else
YYFPRINTF (stderr, "%s incomplete ", yymsg);
yy_symbol_print (stderr, yystos[yys->yylrState],
NULL]b4_locations_if([, &yys->yyloc])[]b4_user_args[);
YYFPRINTF (stderr, "\n");
}
#endif
if (yys->yysemantics.yyfirstVal)
{
yySemanticOption *yyoption = yys->yysemantics.yyfirstVal;
yyGLRState *yyrh;
int yyn;