# 02110-1301 USA
m4_include(b4_pkgdatadir/[c++.m4])
+
+# The header is mandatory.
+b4_defines_if([],
+ [m4_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(0)dnl
-m4_if(b4_defines_flag, 0, [],
+b4_defines_if(
[@output @output_header_name@
-b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison],
- [2002, 2003, 2004, 2005, 2006])
+b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
+ [2002, 2003, 2004, 2005, 2006])
dnl FIXME: This is wrong, we want computed header guards.
[
/* C++ LALR(1) parser skeleton written by Akim Demaille. */
#include <iostream>
#include "stack.hh"
-namespace yy
+namespace ]b4_namespace[
{
class position;
class location;
}
-/* First part of user declarations. */
-]b4_pre_prologue[
+]m4_ifdef([b4_start_header],
+[[/* Copy the %start-header blocks. */
+]b4_start_header])[]dnl
-]/* Line __line__ of lalr1.cc. */
-b4_syncline([@oline@], [@ofile@])[
+[/* Line __line__ of lalr1.cc. */
+]b4_syncline([@oline@], [@ofile@])[
]dnl Include location.hh here: it might depend on headers included above.
[#include "location.hh"
/* Enabling traces. */
#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug[
+# define YYDEBUG ]b4_debug_flag[
#endif
/* Enabling verbose error messages. */
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
-# define YYERROR_VERBOSE ]b4_error_verbose[
+# define YYERROR_VERBOSE ]b4_error_verbose_flag[
#endif
/* Enabling the token table. */
} while (false)
#endif
-namespace yy
+namespace ]b4_namespace[
{
/// A Bison parser.
{
public:
/// Symbol semantic values.
-#if ! defined (YYSTYPE)
+#ifndef YYSTYPE
]m4_ifdef([b4_stype],
[ union semantic_type
b4_stype
{
]b4_token_enums(b4_tokens)[
};
+ /// Token type.
+ typedef token::yytokentype token_type;
/// Build a parser object.
]b4_parser_class_name[ (]b4_parse_param_decl[);
/// Generate an error message.
/// \param state the state where the error occurred.
- /// \param tok the look-ahead token.
+ /// \param tok the lookahead token.
virtual std::string yysyntax_error_ (int yystate]dnl
b4_error_verbose_if([, int tok])[);
/// \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);
+ 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);
+ const semantic_type* yyvaluep,
+ const location_type* yylocationp);
#endif /* ! YYDEBUG */
virtual void yystack_print_ ();
#endif
- /// Convert a scanner token number to a symbol number.
- inline token_number_type yytranslate_ (int token);
+ /// 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 yyvaluep Its semantic value.
/// \param yylocationp Its location.
inline void yydestruct_ (const char* yymsg,
- int yytype,
- semantic_type* yyvaluep,
- location_type* yylocationp);
+ int yytype,
+ semantic_type* yyvaluep,
+ location_type* yylocationp);
/// Pop \a n symbols the three stacks.
inline void yypop_ (unsigned int n = 1);
#ifndef YYSTYPE
/* Redirection for backward compatibility. */
-# define YYSTYPE yy::b4_parser_class_name::semantic_type
+# define YYSTYPE b4_namespace::b4_parser_class_name::semantic_type
#endif
-])[
-#endif /* ! defined PARSER_HEADER_H */]
+])
+m4_ifdef([b4_end_header],
+[[/* Copy the %end-header blocks. */
+]b4_end_header])[]dnl
+
+[#endif /* ! defined PARSER_HEADER_H */]
])dnl
@output @output_parser_name@
-b4_copyright([C++ Skeleton parser for LALR(1) parsing with Bison],
- [2002, 2003, 2004, 2005, 2006])
-m4_if(b4_prefix[], [yy], [],
+b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
+ [2002, 2003, 2004, 2005, 2006])
+m4_if(b4_prefix, [yy], [],
[
// Take the name prefix into account.
-#define yylex b4_prefix[]lex])
-m4_if(b4_defines_flag, 0, [],
-[
+#define yylex b4_prefix[]lex])[
+
+/* First part of user declarations. */
+]b4_pre_prologue
+
+b4_defines_if([
#include @output_header_name@])[
/* User implementation prologue. */
#define YYABORT goto yyabortlab
#define YYERROR goto yyerrorlab
-#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
-yy::]b4_parser_class_name[::yytnamerr_ (const char *yystr)
+namespace ]b4_namespace[
{
- if (*yystr == '"')
- {
- std::string yyr = "";
- char const *yyp = yystr;
+#if YYERROR_VERBOSE
- 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 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;
-}
+ return yystr;
+ }
#endif
-namespace yy
-{
/// Build a parser object.
]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)
: yydebug_ (false),
inline void
]b4_parser_class_name[::yy_symbol_value_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ const semantic_type* yyvaluep, const location_type* yylocationp)
{
YYUSE (yylocationp);
YYUSE (yyvaluep);
{
]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
[ default:
- break;
+ break;
}
}
void
]b4_parser_class_name[::yy_symbol_print_ (int yytype,
- const semantic_type* yyvaluep, const location_type* yylocationp)
+ const semantic_type* yyvaluep, const location_type* yylocationp)
{
*yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
- << ' ' << yytname_[yytype] << " ("
- << *yylocationp << ": ";
+ << ' ' << yytname_[yytype] << " ("
+ << *yylocationp << ": ";
yy_symbol_value_print_ (yytype, yyvaluep, yylocationp);
*yycdebug_ << ')';
}
void
]b4_parser_class_name[::yydestruct_ (const char* yymsg,
- int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+ int yytype, semantic_type* yyvaluep, location_type* yylocationp)
{
YYUSE (yylocationp);
YYUSE (yymsg);
switch (yytype)
{
]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
- default:
- break;
+ default:
+ break;
}
}
int
]b4_parser_class_name[::parse ()
{
- /// Look-ahead and look-ahead in internal form.
+ /// Lookahead and lookahead in internal form.
int yychar = yyempty_;
int yytoken = 0;
int yynerrs_ = 0;
int yyerrstatus_ = 0;
- /// Semantic value of the look-ahead.
+ /// Semantic value of the lookahead.
semantic_type yylval;
- /// Location of the look-ahead.
+ /// Location of the lookahead.
location_type yylloc;
/// The locations where the error started and ended.
location yyerror_range[2];
/* Backup. */
yybackup:
- /* Try to take a decision without look-ahead. */
+ /* Try to take a decision without lookahead. */
yyn = yypact_[yystate];
if (yyn == yypact_ninf_)
goto yydefault;
- /* Read a look-ahead token. */
+ /* Read a lookahead token. */
if (yychar == yyempty_)
{
- YYCDEBUG << "Reading a token: ";
- yychar = ]b4_c_function_call([yylex], [int],
- [[YYSTYPE*], [&yylval]][]dnl
-b4_location_if([, [[location*], [&yylloc]]])dnl
+ 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;
+ yychar = yytoken = yyeof_;
+ YYCDEBUG << "Now at end of input." << std::endl;
}
else
{
- yytoken = yytranslate_ (yychar);
- YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+ 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
yyn = yytable_[yyn];
if (yyn <= 0)
{
- if (yyn == 0 || yyn == yytable_ninf_)
- goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
+ if (yyn == 0 || yyn == yytable_ninf_)
+ goto yyerrlab;
+ yyn = -yyn;
+ goto yyreduce;
}
/* Accept? */
if (yyn == yyfinal_)
goto yyacceptlab;
- /* Shift the look-ahead token. */
+ /* Shift the lookahead token. */
YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
/* Discard the token being shifted unless it is eof. */
YY_REDUCE_PRINT (yyn);
switch (yyn)
{
- ]b4_actions
+ ]b4_actions
/* Line __line__ of lalr1.cc. */
b4_syncline([@oline@], [@ofile@])[
- default: break;
+ default: break;
}
YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
yyn = yyr1_[yyn];
yystate = yypgoto_[yyn - yyntokens_] + yystate_stack_[0];
if (0 <= yystate && yystate <= yylast_
- && yycheck_[yystate] == yystate_stack_[0])
+ && yycheck_[yystate] == yystate_stack_[0])
yystate = yytable_[yystate];
else
yystate = yydefgoto_[yyn - yyntokens_];
/* If not already recovering from an error, report this error. */
if (!yyerrstatus_)
{
- ++yynerrs_;
- error (yylloc, yysyntax_error_ (yystate]dnl
+ ++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 look-ahead 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_;
- }
+ /* 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 look-ahead token after shifting the error
+ /* Else will try to reuse lookahead token after shifting the error
token. */
goto yyerrlab1;
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 ();
+ 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 ();
}
if (yyn == yyfinal_)
yyerror_range[1] = yylloc;
// Using YYLLOC is tempting, but would change the location of
- // the look-ahead. YYLOC is available though.
- YYLLOC_DEFAULT (yyloc, yyerror_range - 1, 2);
+ // 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]);
+ &yysemantic_stack_[0], &yylocation_stack_[0]);
yystate = yyn;
goto yynewstate;
yypop_ (yylen);
while (yystate_stack_.height () != 1)
{
- yydestruct_ ("Cleanup: popping",
- yystos_[yystate_stack_[0]],
- &yysemantic_stack_[0],
- &yylocation_stack_[0]);
- yypop_ ();
+ yydestruct_ ("Cleanup: popping",
+ yystos_[yystate_stack_[0]],
+ &yysemantic_stack_[0],
+ &yylocation_stack_[0]);
+ yypop_ ();
}
return yyresult;
b4_error_verbose_if([, int tok])[)
{
std::string res;
+ YYUSE (yystate);
#if YYERROR_VERBOSE
int yyn = yypact_[yystate];
- if (yypact_ninf_ < yyn && yyn < yylast_)
+ 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;
- 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]);
- }
- }
+ /* 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
{
*yycdebug_ << "Stack now";
for (state_stack_type::const_iterator i = yystate_stack_.begin ();
- i != yystate_stack_.end (); ++i)
+ i != yystate_stack_.end (); ++i)
*yycdebug_ << ' ' << *i;
*yycdebug_ << std::endl;
}
int yynrhs = yyr2_[yyrule];
/* Print the symbols being reduced, and their result. */
*yycdebug_ << "Reducing stack by rule " << yyrule - 1
- << " (line " << yylno << "), ";
+ << " (line " << yylno << "), ";
/* 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)[);
+ 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 token)
+ ]b4_parser_class_name[::yytranslate_ (int t)
{
static
const token_number_type
{
]b4_translate[
};
- if ((unsigned int) token <= yyuser_token_number_max_)
- return translate_table[token];
+ if ((unsigned int) t <= yyuser_token_number_max_)
+ return translate_table[t];
else
return yyundef_token_;
}
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[;
-} // namespace yy
+} // namespace ]b4_namespace[
]b4_epilogue
dnl
@output b4_dir_prefix[]stack.hh
-b4_copyright([stack handling for Bison C++ parsers],
+b4_copyright([Stack handling for Bison parsers in C++],
[2002, 2003, 2004, 2005, 2006])[
#ifndef BISON_STACK_HH
#include <deque>
-namespace yy
+namespace ]b4_namespace[
{
template <class T, class S = std::deque<T> >
class stack
projects / bison.git / blobdiff