diff options
| author | marha <marha@users.sourceforge.net> | 2011-01-19 20:29:24 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2011-01-19 20:29:24 +0000 |
| commit | cbe6ed88f01b654241301539d8fa3f6111a0a6de (patch) | |
| tree | 0fe25b7083dc4cc0c3e162fe18e9d427fcb712a5 /tools/mhmake/src/bisondata/lalr1.cc | |
| parent | cdc60fdcddbe5666aac11af34c6c030d4a670b99 (diff) | |
| download | vcxsrv-cbe6ed88f01b654241301539d8fa3f6111a0a6de.tar.gz vcxsrv-cbe6ed88f01b654241301539d8fa3f6111a0a6de.tar.bz2 vcxsrv-cbe6ed88f01b654241301539d8fa3f6111a0a6de.zip | |
Use bison instead of bison++
The += operator should also take the environment variables into account
Solved problem when & in redirect operator on command line
Solved syntax error when SPACE was follewed by SPACE
Removed kdevelop3 project files
Enable debug info in debug build on linux
Added support for foreach function
Fixed dependency problem for implicit rules with extra dependencies
Increased gnu make compatibility: allow implicit rules without commands
Solved wrong error message when it cannot build a target in mhmake_dbg
On windows: when checking the extension of a command: make sure a / does not cause a wrong decision
Added safety against recursive implicit rules.
Fixed wrong check on failure to open makefiles.
Make sure no message is printed when -include is used
flex and bison generated files: make sure the #line statements have the correct line numbers for the debugger after having added one line in the beginning of the file after running the flex/bison.
Make sure that the variable defined just before an error or message/info macro is defined when the message is generated.
mhmake_dbg: print error message when a target cannot be build because the directory of the target does not exist (and no rule is defined for it)
Reformatted message/info macro output
Also print makefile and line number when using error and message macro
Solved crash in mhmake_dbg when -C is specified on the command line
Solved problem in macro expansion when 2 patsubst inside each other
addprefix should not give an error when done on an empty string
Use comspec when echo is followed by a pipe character (piping is not supported by the echo internal command of mhmake)
Solved possible stack curruption (there was little chance that this was occuring)
Diffstat (limited to 'tools/mhmake/src/bisondata/lalr1.cc')
| -rw-r--r-- | tools/mhmake/src/bisondata/lalr1.cc | 1169 |
1 files changed, 1169 insertions, 0 deletions
diff --git a/tools/mhmake/src/bisondata/lalr1.cc b/tools/mhmake/src/bisondata/lalr1.cc new file mode 100644 index 000000000..25dd01938 --- /dev/null +++ b/tools/mhmake/src/bisondata/lalr1.cc @@ -0,0 +1,1169 @@ +# C++ 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])
+
+m4_define([b4_parser_class_name],
+ [b4_percent_define_get([[parser_class_name]])])
+
+m4_define([b4_parser_base_class_name],
+ [b4_percent_define_get([[parser_base_class_name]])])
+
+m4_define([b4_parser_class_constructor_init],
+ [b4_percent_define_get([[parser_class_constructor_init]])])
+
+m4_define([b4_parser_class_constructor_param],
+ [b4_percent_define_get([[parser_class_constructor_param]])])
+
+# The header is mandatory.
+b4_defines_if([],
+ [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
+
+# Backward compatibility.
+m4_define([b4_location_constructors])
+m4_include(b4_pkgdatadir/[location.cc])
+
+# We do want M4 expansion after # for CPP macros.
+m4_changecom()
+m4_divert_push(0)dnl
+b4_defines_if(
+[@output(b4_spec_defines_file@)
+b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
+ [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+dnl FIXME: This is wrong, we want computed header guards.
+[
+/* C++ LALR(1) parser skeleton written by Akim Demaille. */
+
+#ifndef PARSER_HEADER_H
+# define PARSER_HEADER_H
+
+]b4_percent_code_get([[requires]])[
+
+#include <string>
+#include <iostream>
+#include "stack.hh"
+
+]b4_namespace_open[
+ class position;
+ class location;
+]b4_namespace_close[
+
+#include "location.hh"
+
+/* 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
+
+/* 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). */
+
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Rhs, N) \
+do { \
+ if (N) \
+ { \
+ (Current).begin = (Rhs)[1].begin; \
+ (Current).end = (Rhs)[N].end; \
+ } \
+ else \
+ { \
+ (Current).begin = (Current).end = (Rhs)[0].end; \
+ } \
+} while (false)
+#endif
+
+]b4_namespace_open[
+
+ /// A Bison parser.
+ class ]b4_parser_class_name[ : public ]b4_parser_base_class_name[
+ {
+ public:
+ /// Symbol semantic values.
+#ifndef YYSTYPE
+]m4_ifdef([b4_stype],
+[ union semantic_type
+ {
+b4_user_stype
+ };],
+[m4_if(b4_tag_seen_flag, 0,
+[[ typedef int semantic_type;]],
+[[ typedef YYSTYPE semantic_type;]])])[
+#else
+ typedef YYSTYPE semantic_type;
+#endif
+ /// Symbol locations.
+ typedef ]b4_percent_define_get([[location_type]])[ location_type;
+ /// Tokens.
+ struct token
+ {
+ ]b4_token_enums(b4_tokens)[
+ };
+ /// Token type.
+ typedef token::yytokentype token_type;
+
+ /// Build a parser object.
+ ]b4_parser_class_name[ (]b4_parse_param_decl[ ]b4_parser_class_constructor_param[ );
+ virtual ~]b4_parser_class_name[ ();
+
+ /// Parse.
+ /// \returns 0 iff parsing succeeded.
+ virtual int parse ();
+
+#if YYDEBUG
+ /// The current debugging stream.
+ std::ostream& debug_stream () const;
+ /// Set the current debugging stream.
+ void set_debug_stream (std::ostream &);
+
+ /// Type for debugging levels.
+ typedef int debug_level_type;
+ /// The current debugging level.
+ debug_level_type debug_level () const;
+ /// Set the current debugging level.
+ void set_debug_level (debug_level_type l);
+#endif
+
+ private:
+ /// Report a syntax error.
+ /// \param loc where the syntax error is found.
+ /// \param msg a description of the syntax error.
+ virtual void error (const location_type& loc, const std::string& msg);
+
+ /// Generate an error message.
+ /// \param state the state where the error occurred.
+ /// \param tok the lookahead token.
+ virtual std::string yysyntax_error_ (int yystate]dnl
+b4_error_verbose_if([, int tok])[);
+
+#if YYDEBUG
+ /// \brief Report a symbol value on the debug stream.
+ /// \param yytype The token type.
+ /// \param yyvaluep Its semantic value.
+ /// \param yylocationp Its location.
+ virtual void yy_symbol_value_print_ (int yytype,
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp);
+ /// \brief Report a symbol on the debug stream.
+ /// \param yytype The token type.
+ /// \param yyvaluep Its semantic value.
+ /// \param yylocationp Its location.
+ virtual void yy_symbol_print_ (int yytype,
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp);
+#endif
+
+
+ /// State numbers.
+ typedef int state_type;
+ /// State stack type.
+ typedef stack<state_type> state_stack_type;
+ /// Semantic value stack type.
+ typedef stack<semantic_type> semantic_stack_type;
+ /// location stack type.
+ typedef stack<location_type> location_stack_type;
+
+ /// The state stack.
+ state_stack_type yystate_stack_;
+ /// The semantic value stack.
+ semantic_stack_type yysemantic_stack_;
+ /// The location stack.
+ location_stack_type yylocation_stack_;
+
+ /// Internal symbol numbers.
+ typedef ]b4_int_type_for([b4_translate])[ token_number_type;
+ /* Tables. */
+ /// For a state, the index in \a yytable_ of its portion.
+ static const ]b4_int_type_for([b4_pact])[ yypact_[];
+ static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
+
+ /// For a state, default rule to reduce.
+ /// Unless\a yytable_ specifies something else to do.
+ /// Zero means the default is an error.
+ static const ]b4_int_type_for([b4_defact])[ yydefact_[];
+
+ static const ]b4_int_type_for([b4_pgoto])[ yypgoto_[];
+ static const ]b4_int_type_for([b4_defgoto])[ yydefgoto_[];
+
+ /// What to do in a state.
+ /// \a yytable_[yypact_[s]]: what to do in state \a s.
+ /// - if positive, shift that token.
+ /// - if negative, reduce the rule which number is the opposite.
+ /// - if zero, do what YYDEFACT says.
+ static const ]b4_int_type_for([b4_table])[ yytable_[];
+ static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_;
+
+ static const ]b4_int_type_for([b4_check])[ yycheck_[];
+
+ /// For a state, its accessing symbol.
+ static const ]b4_int_type_for([b4_stos])[ yystos_[];
+
+ /// For a rule, its LHS.
+ static const ]b4_int_type_for([b4_r1])[ yyr1_[];
+ /// For a rule, its RHS length.
+ static const ]b4_int_type_for([b4_r2])[ yyr2_[];
+
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+ /// For a symbol, its name in clear.
+ static const char* const yytname_[];
+#endif
+
+#if YYERROR_VERBOSE
+ /// Convert the symbol name \a n to a form suitable for a diagnostic.
+ virtual std::string yytnamerr_ (const char *n);
+#endif
+
+#if YYDEBUG
+ /// A type to store symbol numbers and -1.
+ typedef ]b4_int_type_for([b4_rhs])[ rhs_number_type;
+ /// A `-1'-separated list of the rules' RHS.
+ static const rhs_number_type yyrhs_[];
+ /// For each rule, the index of the first RHS symbol in \a yyrhs_.
+ static const ]b4_int_type_for([b4_prhs])[ yyprhs_[];
+ /// For each rule, its source line number.
+ static const ]b4_int_type_for([b4_rline])[ yyrline_[];
+ /// For each scanner token number, its symbol number.
+ static const ]b4_int_type_for([b4_toknum])[ yytoken_number_[];
+ /// Report on the debug stream that the rule \a r is going to be reduced.
+ virtual void yy_reduce_print_ (int r);
+ /// Print the state stack on the debug stream.
+ virtual void yystack_print_ ();
+
+ /* Debugging. */
+ int yydebug_;
+ std::ostream* yycdebug_;
+#endif
+
+ /// Convert a scanner token number \a t to a symbol number.
+ token_number_type yytranslate_ (int t);
+
+ /// \brief Reclaim the memory associated to a symbol.
+ /// \param yymsg Why this token is reclaimed.
+ /// \param yytype The symbol type.
+ /// \param yyvaluep Its semantic value.
+ /// \param yylocationp Its location.
+ inline void yydestruct_ (const char* yymsg,
+ int yytype,
+ semantic_type* yyvaluep,
+ location_type* yylocationp);
+
+ /// Pop \a n symbols the three stacks.
+ inline void yypop_ (unsigned int n = 1);
+
+ /* Constants. */
+ static const int yyeof_;
+ /* LAST_ -- Last index in TABLE_. */
+ static const int yylast_;
+ static const int yynnts_;
+ static const int yyempty_;
+ static const int yyfinal_;
+ static const int yyterror_;
+ static const int yyerrcode_;
+ static const int yyntokens_;
+ static const unsigned int yyuser_token_number_max_;
+ static const token_number_type yyundef_token_;
+]b4_parse_param_vars[
+ };
+]b4_namespace_close[
+
+]b4_percent_define_flag_if([[global_tokens_and_yystype]],
+[b4_token_defines(b4_tokens)
+
+#ifndef YYSTYPE
+ /* Redirection for backward compatibility. */
+# define YYSTYPE b4_namespace_ref::b4_parser_class_name::semantic_type
+#endif
+])
+b4_percent_code_get([[provides]])[]dnl
+
+[#endif /* ! defined PARSER_HEADER_H */]
+])dnl
+@output(b4_parser_file_name@)
+b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
+ [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+b4_percent_code_get([[top]])[]dnl
+m4_if(b4_prefix, [yy], [],
+[
+// Take the name prefix into account.
+#define yylex b4_prefix[]lex])[
+
+/* First part of user declarations. */
+]b4_user_pre_prologue
+
+b4_defines_if([[
+#include "@basename(]b4_spec_defines_file[@)"]])[
+
+/* User implementation prologue. */
+]b4_user_post_prologue
+b4_percent_code_get[]dnl
+
+[#ifndef YY_
+# if YYENABLE_NLS
+# if ENABLE_NLS
+# include <libintl.h> /* FIXME: 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. */
+#define YYUSE(e) ((void) (e))
+
+/* Enable debugging if requested. */
+#if YYDEBUG
+
+/* A pseudo ostream that takes yydebug_ into account. */
+# define YYCDEBUG if (yydebug_) (*yycdebug_)
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \
+do { \
+ if (yydebug_) \
+ { \
+ *yycdebug_ << Title << ' '; \
+ yy_symbol_print_ ((Type), (Value), (Location)); \
+ *yycdebug_ << std::endl; \
+ } \
+} while (false)
+
+# define YY_REDUCE_PRINT(Rule) \
+do { \
+ if (yydebug_) \
+ yy_reduce_print_ (Rule); \
+} while (false)
+
+# define YY_STACK_PRINT() \
+do { \
+ if (yydebug_) \
+ yystack_print_ (); \
+} while (false)
+
+#else /* !YYDEBUG */
+
+# define YYCDEBUG if (false) std::cerr
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+# define YY_REDUCE_PRINT(Rule)
+# define YY_STACK_PRINT()
+
+#endif /* !YYDEBUG */
+
+#define yyerrok (yyerrstatus_ = 0)
+#define yyclearin (yychar = yyempty_)
+
+#define YYACCEPT goto yyacceptlab
+#define YYABORT goto yyabortlab
+#define YYERROR goto yyerrorlab
+#define YYRECOVERING() (!!yyerrstatus_)
+
+]b4_namespace_open[
+#if YYERROR_VERBOSE
+
+ /* Return 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. */
+ std::string
+ ]b4_parser_class_name[::yytnamerr_ (const char *yystr)
+ {
+ if (*yystr == '"')
+ {
+ std::string yyr = "";
+ 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:
+ yyr += *yyp;
+ break;
+
+ case '"':
+ return yyr;
+ }
+ do_not_strip_quotes: ;
+ }
+
+ return yystr;
+ }
+
+#endif
+
+ /// Build a parser object.
+ ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[ ]b4_parser_class_constructor_param[) ]b4_parser_class_constructor_init[ ]m4_ifset([b4_parse_param], [
+ :])[
+
+#if YYDEBUG
+ ]m4_ifset([b4_parse_param], [ ], [ :])[yydebug_ (false),
+ yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
+#endif]b4_parse_param_cons[
+ {
+ }
+
+ ]b4_parser_class_name::~b4_parser_class_name[ ()
+ {
+ }
+
+#if YYDEBUG
+ /*--------------------------------.
+ | Print this symbol on YYOUTPUT. |
+ `--------------------------------*/
+
+ inline void
+ ]b4_parser_class_name[::yy_symbol_value_print_ (int yytype,
+ const semantic_type* yyvaluep, const location_type* yylocationp)
+ {
+ YYUSE (yylocationp);
+ YYUSE (yyvaluep);
+ switch (yytype)
+ {
+ ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
+[ default:
+ break;
+ }
+ }
+
+
+ void
+ ]b4_parser_class_name[::yy_symbol_print_ (int yytype,
+ const semantic_type* yyvaluep, const location_type* yylocationp)
+ {
+ *yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
+ << ' ' << yytname_[yytype] << " ("
+ << *yylocationp << ": ";
+ yy_symbol_value_print_ (yytype, yyvaluep, yylocationp);
+ *yycdebug_ << ')';
+ }
+#endif
+
+ void
+ ]b4_parser_class_name[::yydestruct_ (const char* yymsg,
+ int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+ {
+ YYUSE (yylocationp);
+ YYUSE (yymsg);
+ YYUSE (yyvaluep);
+
+ YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+
+]m4_ifset([b4_symbol_actions], [ ], [
+ switch (yytype)
+ {
+ ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
+ default:
+ break;
+ }
+ ])[
+ }
+
+ void
+ ]b4_parser_class_name[::yypop_ (unsigned int n)
+ {
+ yystate_stack_.pop (n);
+ yysemantic_stack_.pop (n);
+ yylocation_stack_.pop (n);
+ }
+
+#if YYDEBUG
+ std::ostream&
+ ]b4_parser_class_name[::debug_stream () const
+ {
+ return *yycdebug_;
+ }
+
+ void
+ ]b4_parser_class_name[::set_debug_stream (std::ostream& o)
+ {
+ yycdebug_ = &o;
+ }
+
+
+ ]b4_parser_class_name[::debug_level_type
+ ]b4_parser_class_name[::debug_level () const
+ {
+ return yydebug_;
+ }
+
+ void
+ ]b4_parser_class_name[::set_debug_level (debug_level_type l)
+ {
+ yydebug_ = l;
+ }
+#endif
+
+ int
+ ]b4_parser_class_name[::parse ()
+ {
+ /// Lookahead and lookahead in internal form.
+ int yychar = yyempty_;
+ int yytoken = 0;
+
+ /* State. */
+ int yyn;
+ int yylen = 0;
+ int yystate = 0;
+
+ /* Error handling. */
+ int yynerrs_ = 0;
+ int yyerrstatus_ = 0;
+
+ /// Semantic value of the lookahead.
+ semantic_type yylval;
+ /// Location of the lookahead.
+ location_type yylloc;
+ /// The locations where the error started and ended.
+ location_type yyerror_range[2];
+
+ /// $$.
+ semantic_type yyval;
+ /// @@$.
+ location_type yyloc;
+
+ int yyresult;
+
+ YYCDEBUG << "Starting parse" << std::endl;
+
+]m4_ifdef([b4_initial_action], [
+m4_pushdef([b4_at_dollar], [yylloc])dnl
+m4_pushdef([b4_dollar_dollar], [yylval])dnl
+ /* User initialization code. */
+ b4_user_initial_action
+m4_popdef([b4_dollar_dollar])dnl
+m4_popdef([b4_at_dollar])])dnl
+
+ [ /* Initialize the stacks. The initial state will be pushed in
+ yynewstate, since the latter expects the semantical and the
+ location values to have been already stored, initialize these
+ stacks with a primary value. */
+ yystate_stack_ = state_stack_type (0);
+ yysemantic_stack_ = semantic_stack_type (0);
+ yylocation_stack_ = location_stack_type (0);
+ yysemantic_stack_.push (yylval);
+ yylocation_stack_.push (yylloc);
+
+ /* New state. */
+ yynewstate:
+ yystate_stack_.push (yystate);
+ YYCDEBUG << "Entering state " << yystate << std::endl;
+
+ /* Accept? */
+ if (yystate == yyfinal_)
+ goto yyacceptlab;
+
+ goto yybackup;
+
+ /* Backup. */
+ yybackup:
+
+ /* Try to take a decision without lookahead. */
+ yyn = yypact_[yystate];
+ if (yyn == yypact_ninf_)
+ goto yydefault;
+
+ /* Read a lookahead token. */
+ if (yychar == yyempty_)
+ {
+ YYCDEBUG << "Reading a token: ";
+ yychar = ]b4_c_function_call([yylex], [int],
+ [[YYSTYPE*], [&yylval]][]dnl
+b4_locations_if([, [[location*], [&yylloc]]])dnl
+m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
+ }
+
+
+ /* Convert token to internal form. */
+ if (yychar <= yyeof_)
+ {
+ yychar = yytoken = yyeof_;
+ YYCDEBUG << "Now at end of input." << std::endl;
+ }
+ else
+ {
+ yytoken = yytranslate_ (yychar);
+ YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ }
+
+ /* If the proper action on seeing token YYTOKEN is to reduce or to
+ detect an error, take that action. */
+ yyn += yytoken;
+ if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yytoken)
+ goto yydefault;
+
+ /* Reduce or error. */
+ yyn = yytable_[yyn];
+ if (yyn <= 0)
+ {
+ if (yyn == 0 || yyn == yytable_ninf_)
+ goto yyerrlab;
+ yyn = -yyn;
+ goto yyreduce;
+ }
+
+ /* Shift the lookahead token. */
+ YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+ /* Discard the token being shifted. */
+ yychar = yyempty_;
+
+ yysemantic_stack_.push (yylval);
+ yylocation_stack_.push (yylloc);
+
+ /* Count tokens shifted since error; after three, turn off error
+ status. */
+ if (yyerrstatus_)
+ --yyerrstatus_;
+
+ yystate = yyn;
+ goto yynewstate;
+
+ /*-----------------------------------------------------------.
+ | yydefault -- do the default action for the current state. |
+ `-----------------------------------------------------------*/
+ yydefault:
+ yyn = yydefact_[yystate];
+ if (yyn == 0)
+ goto yyerrlab;
+ goto yyreduce;
+
+ /*-----------------------------.
+ | yyreduce -- Do a reduction. |
+ `-----------------------------*/
+ yyreduce:
+ yylen = yyr2_[yyn];
+ /* If YYLEN is nonzero, implement the default value of the action:
+ `$$ = $1'. Otherwise, use the top of the stack.
+
+ Otherwise, the following line sets YYVAL to garbage.
+ This behavior is undocumented and Bison
+ users should not rely upon it. */
+ if (yylen)
+ yyval = yysemantic_stack_[yylen - 1];
+ else
+ yyval = yysemantic_stack_[0];
+
+ {
+ slice<location_type, location_stack_type> slice (yylocation_stack_, yylen);
+ YYLLOC_DEFAULT (yyloc, slice, yylen);
+ }
+ YY_REDUCE_PRINT (yyn);
+ switch (yyn)
+ {
+ ]b4_user_actions[
+ default:
+ break;
+ }
+ YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
+
+ yypop_ (yylen);
+ yylen = 0;
+ YY_STACK_PRINT ();
+
+ yysemantic_stack_.push (yyval);
+ yylocation_stack_.push (yyloc);
+
+ /* Shift the result of the reduction. */
+ yyn = yyr1_[yyn];
+ yystate = yypgoto_[yyn - yyntokens_] + yystate_stack_[0];
+ if (0 <= yystate && yystate <= yylast_
+ && yycheck_[yystate] == yystate_stack_[0])
+ yystate = yytable_[yystate];
+ else
+ yystate = yydefgoto_[yyn - yyntokens_];
+ goto yynewstate;
+
+ /*------------------------------------.
+ | yyerrlab -- here on detecting error |
+ `------------------------------------*/
+ yyerrlab:
+ /* If not already recovering from an error, report this error. */
+ if (!yyerrstatus_)
+ {
+ ++yynerrs_;
+ error (yylloc, yysyntax_error_ (yystate]dnl
+b4_error_verbose_if([, yytoken])[));
+ }
+
+ yyerror_range[0] = yylloc;
+ if (yyerrstatus_ == 3)
+ {
+ /* If just tried and failed to reuse lookahead token after an
+ error, discard it. */
+
+ if (yychar <= yyeof_)
+ {
+ /* Return failure if at end of input. */
+ if (yychar == yyeof_)
+ YYABORT;
+ }
+ else
+ {
+ yydestruct_ ("Error: discarding", yytoken, &yylval, &yylloc);
+ yychar = yyempty_;
+ }
+ }
+
+ /* Else will try to reuse lookahead token after shifting the error
+ token. */
+ goto yyerrlab1;
+
+
+ /*---------------------------------------------------.
+ | yyerrorlab -- error raised explicitly by YYERROR. |
+ `---------------------------------------------------*/
+ yyerrorlab:
+
+ /* Pacify compilers like GCC when the user code never invokes
+ YYERROR and the label yyerrorlab therefore never appears in user
+ code. */
+ if (false)
+ goto yyerrorlab;
+
+ yyerror_range[0] = yylocation_stack_[yylen - 1];
+ /* Do not reclaim the symbols of the rule which action triggered
+ this YYERROR. */
+ yypop_ (yylen);
+ yylen = 0;
+ yystate = yystate_stack_[0];
+ goto yyerrlab1;
+
+ /*-------------------------------------------------------------.
+ | yyerrlab1 -- common code for both syntax error and YYERROR. |
+ `-------------------------------------------------------------*/
+ yyerrlab1:
+ yyerrstatus_ = 3; /* Each real token shifted decrements this. */
+
+ for (;;)
+ {
+ yyn = yypact_[yystate];
+ if (yyn != yypact_ninf_)
+ {
+ yyn += yyterror_;
+ if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
+ {
+ yyn = yytable_[yyn];
+ if (0 < yyn)
+ break;
+ }
+ }
+
+ /* Pop the current state because it cannot handle the error token. */
+ if (yystate_stack_.height () == 1)
+ YYABORT;
+
+ yyerror_range[0] = yylocation_stack_[0];
+ yydestruct_ ("Error: popping",
+ yystos_[yystate],
+ &yysemantic_stack_[0], &yylocation_stack_[0]);
+ yypop_ ();
+ yystate = yystate_stack_[0];
+ YY_STACK_PRINT ();
+ }
+
+ yyerror_range[1] = yylloc;
+ // Using YYLLOC is tempting, but would change the location of
+ // the lookahead. YYLOC is available though.
+ YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
+ yysemantic_stack_.push (yylval);
+ yylocation_stack_.push (yyloc);
+
+ /* Shift the error token. */
+ YY_SYMBOL_PRINT ("Shifting", yystos_[yyn],
+ &yysemantic_stack_[0], &yylocation_stack_[0]);
+
+ yystate = yyn;
+ goto yynewstate;
+
+ /* Accept. */
+ yyacceptlab:
+ yyresult = 0;
+ goto yyreturn;
+
+ /* Abort. */
+ yyabortlab:
+ yyresult = 1;
+ goto yyreturn;
+
+ yyreturn:
+ if (yychar != yyempty_)
+ yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
+
+ /* Do not reclaim the symbols of the rule which action triggered
+ this YYABORT or YYACCEPT. */
+ yypop_ (yylen);
+ while (yystate_stack_.height () != 1)
+ {
+ yydestruct_ ("Cleanup: popping",
+ yystos_[yystate_stack_[0]],
+ &yysemantic_stack_[0],
+ &yylocation_stack_[0]);
+ yypop_ ();
+ }
+
+ return yyresult;
+ }
+
+ // Generate an error message.
+ std::string
+ ]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl
+b4_error_verbose_if([, int tok])[)
+ {
+ std::string res;
+ YYUSE (yystate);
+#if YYERROR_VERBOSE
+ int yyn = yypact_[yystate];
+ if (yypact_ninf_ < yyn && yyn <= yylast_)
+ {
+ /* Start YYX at -YYN if negative to avoid negative indexes in
+ YYCHECK. */
+ int yyxbegin = yyn < 0 ? -yyn : 0;
+
+ /* Stay within bounds of both yycheck and yytname. */
+ int yychecklim = yylast_ - yyn + 1;
+ int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+ int count = 0;
+ for (int x = yyxbegin; x < yyxend; ++x)
+ if (yycheck_[x + yyn] == x && x != yyterror_)
+ ++count;
+
+ // FIXME: This method of building the message is not compatible
+ // with internationalization. It should work like yacc.c does it.
+ // That is, first build a string that looks like this:
+ // "syntax error, unexpected %s or %s or %s"
+ // Then, invoke YY_ on this string.
+ // Finally, use the string as a format to output
+ // yytname_[tok], etc.
+ // Until this gets fixed, this message appears in English only.
+ res = "syntax error, unexpected ";
+ res += yytnamerr_ (yytname_[tok]);
+ if (count < 5)
+ {
+ count = 0;
+ for (int x = yyxbegin; x < yyxend; ++x)
+ if (yycheck_[x + yyn] == x && x != yyterror_)
+ {
+ res += (!count++) ? ", expecting " : " or ";
+ res += yytnamerr_ (yytname_[x]);
+ }
+ }
+ }
+ else
+#endif
+ res = YY_("syntax error");
+ return res;
+ }
+
+
+ /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+ STATE-NUM. */
+ const ]b4_int_type(b4_pact_ninf, b4_pact_ninf) b4_parser_class_name::yypact_ninf_ = b4_pact_ninf[;
+ const ]b4_int_type_for([b4_pact])[
+ ]b4_parser_class_name[::yypact_[] =
+ {
+ ]b4_pact[
+ };
+
+ /* 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. */
+ const ]b4_int_type_for([b4_defact])[
+ ]b4_parser_class_name[::yydefact_[] =
+ {
+ ]b4_defact[
+ };
+
+ /* YYPGOTO[NTERM-NUM]. */
+ const ]b4_int_type_for([b4_pgoto])[
+ ]b4_parser_class_name[::yypgoto_[] =
+ {
+ ]b4_pgoto[
+ };
+
+ /* YYDEFGOTO[NTERM-NUM]. */
+ const ]b4_int_type_for([b4_defgoto])[
+ ]b4_parser_class_name[::yydefgoto_[] =
+ {
+ ]b4_defgoto[
+ };
+
+ /* 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. */
+ const ]b4_int_type(b4_table_ninf, b4_table_ninf) b4_parser_class_name::yytable_ninf_ = b4_table_ninf[;
+ const ]b4_int_type_for([b4_table])[
+ ]b4_parser_class_name[::yytable_[] =
+ {
+ ]b4_table[
+ };
+
+ /* YYCHECK. */
+ const ]b4_int_type_for([b4_check])[
+ ]b4_parser_class_name[::yycheck_[] =
+ {
+ ]b4_check[
+ };
+
+ /* STOS_[STATE-NUM] -- The (internal number of the) accessing
+ symbol of state STATE-NUM. */
+ const ]b4_int_type_for([b4_stos])[
+ ]b4_parser_class_name[::yystos_[] =
+ {
+ ]b4_stos[
+ };
+
+#if YYDEBUG
+ /* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding
+ to YYLEX-NUM. */
+ const ]b4_int_type_for([b4_toknum])[
+ ]b4_parser_class_name[::yytoken_number_[] =
+ {
+ ]b4_toknum[
+ };
+#endif
+
+ /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
+ const ]b4_int_type_for([b4_r1])[
+ ]b4_parser_class_name[::yyr1_[] =
+ {
+ ]b4_r1[
+ };
+
+ /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
+ const ]b4_int_type_for([b4_r2])[
+ ]b4_parser_class_name[::yyr2_[] =
+ {
+ ]b4_r2[
+ };
+
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+ /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+ First, the terminals, then, starting at \a yyntokens_, nonterminals. */
+ const char*
+ const ]b4_parser_class_name[::yytname_[] =
+ {
+ ]b4_tname[
+ };
+#endif
+
+#if YYDEBUG
+ /* YYRHS -- A `-1'-separated list of the rules' RHS. */
+ const ]b4_parser_class_name[::rhs_number_type
+ ]b4_parser_class_name[::yyrhs_[] =
+ {
+ ]b4_rhs[
+ };
+
+ /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
+ YYRHS. */
+ const ]b4_int_type_for([b4_prhs])[
+ ]b4_parser_class_name[::yyprhs_[] =
+ {
+ ]b4_prhs[
+ };
+
+ /* YYRLINE[YYN] -- Source line where rule number YYN was defined. */
+ const ]b4_int_type_for([b4_rline])[
+ ]b4_parser_class_name[::yyrline_[] =
+ {
+ ]b4_rline[
+ };
+
+ // Print the state stack on the debug stream.
+ void
+ ]b4_parser_class_name[::yystack_print_ ()
+ {
+ *yycdebug_ << "Stack now";
+ for (state_stack_type::const_iterator i = yystate_stack_.begin ();
+ i != yystate_stack_.end (); ++i)
+ *yycdebug_ << ' ' << *i;
+ *yycdebug_ << std::endl;
+ }
+
+ // Report on the debug stream that the rule \a yyrule is going to be reduced.
+ void
+ ]b4_parser_class_name[::yy_reduce_print_ (int yyrule)
+ {
+ unsigned int yylno = yyrline_[yyrule];
+ int yynrhs = yyr2_[yyrule];
+ /* Print the symbols being reduced, and their result. */
+ *yycdebug_ << "Reducing stack by rule " << yyrule - 1
+ << " (line " << yylno << "):" << std::endl;
+ /* The symbols being reduced. */
+ for (int yyi = 0; yyi < yynrhs; yyi++)
+ YY_SYMBOL_PRINT (" $" << yyi + 1 << " =",
+ yyrhs_[yyprhs_[yyrule] + yyi],
+ &]b4_rhs_value(yynrhs, yyi + 1)[,
+ &]b4_rhs_location(yynrhs, yyi + 1)[);
+ }
+#endif // YYDEBUG
+
+ /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */
+ ]b4_parser_class_name[::token_number_type
+ ]b4_parser_class_name[::yytranslate_ (int t)
+ {
+ static
+ const token_number_type
+ translate_table[] =
+ {
+ ]b4_translate[
+ };
+ if ((unsigned int) t <= yyuser_token_number_max_)
+ return translate_table[t];
+ else
+ return yyundef_token_;
+ }
+
+ const int ]b4_parser_class_name[::yyeof_ = 0;
+ const int ]b4_parser_class_name[::yylast_ = ]b4_last[;
+ const int ]b4_parser_class_name[::yynnts_ = ]b4_nterms_number[;
+ const int ]b4_parser_class_name[::yyempty_ = -2;
+ const int ]b4_parser_class_name[::yyfinal_ = ]b4_final_state_number[;
+ const int ]b4_parser_class_name[::yyterror_ = 1;
+ const int ]b4_parser_class_name[::yyerrcode_ = 256;
+ const int ]b4_parser_class_name[::yyntokens_ = ]b4_tokens_number[;
+
+ const unsigned int ]b4_parser_class_name[::yyuser_token_number_max_ = ]b4_user_token_number_max[;
+ const ]b4_parser_class_name[::token_number_type ]b4_parser_class_name[::yyundef_token_ = ]b4_undef_token_number[;
+
+]b4_namespace_close[
+
+]b4_epilogue
+dnl
+@output(b4_dir_prefix[]stack.hh@)
+b4_copyright([Stack handling for Bison parsers in C++],
+ [2002, 2003, 2004, 2005, 2006, 2007, 2008])[
+
+#ifndef BISON_STACK_HH
+# define BISON_STACK_HH
+
+#include <deque>
+
+]b4_namespace_open[
+ template <class T, class S = std::deque<T> >
+ class stack
+ {
+ public:
+
+ // Hide our reversed order.
+ typedef typename S::reverse_iterator iterator;
+ typedef typename S::const_reverse_iterator const_iterator;
+
+ stack () : seq_ ()
+ {
+ }
+
+ stack (unsigned int n) : seq_ (n)
+ {
+ }
+
+ inline
+ T&
+ operator [] (unsigned int i)
+ {
+ return seq_[i];
+ }
+
+ inline
+ const T&
+ operator [] (unsigned int i) const
+ {
+ return seq_[i];
+ }
+
+ inline
+ void
+ push (const T& t)
+ {
+ seq_.push_front (t);
+ }
+
+ inline
+ void
+ pop (unsigned int n = 1)
+ {
+ for (; n; --n)
+ seq_.pop_front ();
+ }
+
+ inline
+ unsigned int
+ height () const
+ {
+ return seq_.size ();
+ }
+
+ inline const_iterator begin () const { return seq_.rbegin (); }
+ inline const_iterator end () const { return seq_.rend (); }
+
+ private:
+
+ S seq_;
+ };
+
+ /// Present a slice of the top of a stack.
+ template <class T, class S = stack<T> >
+ class slice
+ {
+ public:
+
+ slice (const S& stack,
+ unsigned int range) : stack_ (stack),
+ range_ (range)
+ {
+ }
+
+ inline
+ const T&
+ operator [] (unsigned int i) const
+ {
+ return stack_[range_ - i];
+ }
+
+ private:
+
+ const S& stack_;
+ unsigned int range_;
+ };
+]b4_namespace_close[
+
+#endif // not BISON_STACK_HH[]dnl
+]
+m4_divert_pop(0)
|