# C++ skeleton for Bison
-# Copyright (C) 2002-2011 Free Software Foundation, Inc.
+# Copyright (C) 2002-2012 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
m4_pushdef([b4_copyright_years],
- [2002-2011])
+ [2002-2012])
m4_define([b4_parser_class_name],
[b4_percent_define_get([[parser_class_name]])])
b4_locations_if([b4_percent_define_ifdef([[location_type]], [],
[# Backward compatibility.
- m4_define([b4_location_constructors])
- m4_include(b4_pkgdatadir/[location.cc])])])
+ m4_define([b4_location_constructors])
+ m4_include(b4_pkgdatadir/[location.cc])])])
m4_include(b4_pkgdatadir/[stack.hh])
b4_variant_if([m4_include(b4_pkgdatadir/[variant.hh])])
m4_divert_push(0)dnl
@output(b4_spec_defines_file@)@
b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++])
-dnl FIXME: This is wrong, we want computed header guards.
[
+/**
+ ** \file ]b4_spec_defines_file[
+ ** Define the ]b4_namespace_ref[::parser class.
+ */
+
/* C++ LALR(1) parser skeleton written by Akim Demaille. */
-#ifndef PARSER_HEADER_H
-# define PARSER_HEADER_H
+]b4_cpp_guard_open([b4_spec_defines_file])[
]b4_percent_code_get([[requires]])[
b4_variant_define
b4_namespace_close])[
+]b4_null_define[
+
/* Enabling traces. */
#ifndef YYDEBUG
# define YYDEBUG ]b4_parse_trace_if([1], [0])[
/// \param msg a description of the syntax error.
virtual void error (]b4_locations_if([const location_type& loc, ])[const std::string& msg);
+ /// Report a syntax error.
+ void error (const syntax_error& err);
+
private:
/// State numbers.
typedef int state_type;
yyfinal_ = ]b4_final_state_number[, //< Termination state number.
yyterror_ = 1,
yyerrcode_ = 256,
- yyntokens_ = ]b4_tokens_number[, //< Number of tokens.
+ yyntokens_ = ]b4_tokens_number[ //< Number of tokens.
};
]b4_parse_param_vars[
/* 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 */]
+])[
+]b4_percent_code_get([[provides]])[
+]b4_cpp_guard_close([b4_spec_defines_file])
@output(b4_parser_file_name@)@
b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++])
b4_percent_code_get([[top]])[]dnl
} \
} while (false)
-# define YY_REDUCE_PRINT(Rule) \
- do { \
+# define YY_REDUCE_PRINT(Rule) \
+ do { \
if (yydebug_) \
- yy_reduce_print_ (Rule); \
+ yy_reduce_print_ (Rule); \
} while (false)
-# define YY_STACK_PRINT() \
- do { \
+# define YY_STACK_PRINT() \
+ do { \
if (yydebug_) \
yystack_print_ (); \
} while (false)
#else /* !YYDEBUG */
# define YYCDEBUG if (false) std::cerr
-# define YY_SYMBOL_PRINT(Title, Symbol) static_cast<void>(0)
+# define YY_SYMBOL_PRINT(Title, Symbol) YYUSE(Symbol)
# define YY_REDUCE_PRINT(Rule) static_cast<void>(0)
# define YY_STACK_PRINT() static_cast<void>(0)
]b4_parser_class_name[::yy_destroy_ (const char* yymsg,
symbol_base_type<Exact>& yysym) const
{
- int yytype = yysym.type_get ();
- YYUSE (yymsg);
if (yymsg)
YY_SYMBOL_PRINT (yymsg, yysym);
// User destructor.
+ int yytype = yysym.type_get ();
switch (yytype)
{
]b4_symbol_foreach([b4_symbol_destructor])dnl
]b4_parser_class_name[::yy_print_ (std::ostream& yyo,
const symbol_base_type<Exact>& yysym) const
{
+ std::ostream& yyoutput = yyo;
+ YYUSE (yyoutput);
int yytype = yysym.type_get ();
yyo << (yytype < yyntokens_ ? "token" : "nterm")
<< ' ' << yytname_[yytype] << " ("]b4_locations_if([
{
]b4_symbol_foreach([b4_symbol_printer])dnl
[ default:
- break;
+ break;
}
yyo << ')';
}
location values to have been already stored, initialize these
stacks with a primary value. */
yystack_ = stack_type (0);
- yypush_ (0, 0, yyla);
+ yypush_ (YY_NULL, 0, yyla);
// A new symbol was pushed on the stack.
yynewstate:
if (yyempty)
{
YYCDEBUG << "Reading a token: ";
+ try
+ {
]b4_lex_symbol_if(
-[ yyla = b4_c_function_call([yylex], [symbol_type],
- m4_ifdef([b4_lex_param], b4_lex_param));],
-[ yyla.type = yytranslate_ (b4_c_function_call([yylex], [int],
- [[YYSTYPE*], [&yyla.value]][]dnl
+[ yyla = b4_c_function_call([yylex], [symbol_type],
+ m4_ifdef([b4_lex_param], b4_lex_param));],
+[ yyla.type = yytranslate_ (b4_c_function_call([yylex], [int],
+ [[YYSTYPE*], [&yyla.value]][]dnl
b4_locations_if([, [[location*], [&yyla.location]]])dnl
m4_ifdef([b4_lex_param], [, ]b4_lex_param)));])[
+ }
+ catch (const syntax_error& yyexc)
+ {
+ error (yyexc);
+ goto yyerrlab1;
+ }
yyempty = false;
}
YY_SYMBOL_PRINT ("Next token is", yyla);
yyn = yytable_[yyn];
if (yyn <= 0)
{
- if (yy_table_value_is_error_ (yyn))
- goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
+ if (yy_table_value_is_error_ (yyn))
+ goto yyerrlab;
+ yyn = -yyn;
+ goto yyreduce;
}
/* Discard the token being shifted. */
switch (yyn)
{
]b4_user_actions[
- default:
+ default:
break;
}
}
catch (const syntax_error& yyexc)
{
- error (]b4_args(b4_locations_if([yyexc.location]),
- [[yyexc.what()]])[);
+ error (yyexc);
YYERROR;
}
YY_SYMBOL_PRINT ("-> $$ =", yylhs);
// in the debug trace, it's possibly junk. Hence yymsg = 0.
// Besides, that keeps exactly the same traces as with the other
// Bison skeletons.
- yy_destroy_ (0, yystack_[i]);]])[
+ yy_destroy_ (YY_NULL, yystack_[i]);]])[
yypop_ (yylen);
yylen = 0;
YY_STACK_PRINT ();
/* Shift the result of the reduction. */
- yypush_ (0, yylhs);
+ yypush_ (YY_NULL, yylhs);
goto yynewstate;
/*--------------------------------------.
/* If not already recovering from an error, report this error. */
if (!yyerrstatus_)
{
- ++yynerrs_;
- error (]b4_args(b4_locations_if([yyla.location]),
+ ++yynerrs_;
+ error (]b4_args(b4_locations_if([yyla.location]),
[[yysyntax_error_ (yystack_[0].state,
yyempty ? yyempty_ : yyla.type)]])[);
}
yyerror_range[1].location = yyla.location;]])[
if (yyerrstatus_ == 3)
{
- /* If just tried and failed to reuse lookahead token after an
+ /* If just tried and failed to reuse lookahead token after an
error, discard it. */
/* Return failure if at end of input. */
{
yy_destroy_ ("Error: discarding", yyla);
yyempty = true;
- }
+ }
}
/* Else will try to reuse lookahead token after shifting the error
| yyerrlab1 -- common code for both syntax error and YYERROR. |
`-------------------------------------------------------------*/
yyerrlab1:
- yyerrstatus_ = 3; /* Each real token shifted decrements this. */
+ yyerrstatus_ = 3; /* Each real token shifted decrements this. */
{
stack_symbol_type error_token;
for (;;)
yypop_ (yylen);
while (yystack_.size () != 1)
{
- yy_destroy_ ("Cleanup: popping", yystack_[0]);
- yypop_ ();
+ yy_destroy_ ("Cleanup: popping", yystack_[0]);
+ yypop_ ();
}
return yyresult;
}
+ void
+ ]b4_parser_class_name[::error (const syntax_error& yyexc)
+ {
+ error (]b4_args(b4_locations_if([yyexc.location]),
+ [[yyexc.what()]])[);
+ }
+
// Generate an error message.
std::string
]b4_parser_class_name[::yysyntax_error_ (]dnl
}
}
- char const* yyformat = 0;
+ char const* yyformat = YY_NULL;
switch (yycount)
{
#define YYCASE_(N, S) \
for (stack_type::const_iterator
i = yystack_.begin (),
i_end = yystack_.end ();
- i != i_end; ++i)
+ i != i_end; ++i)
*yycdebug_ << ' ' << i->state;
*yycdebug_ << std::endl;
}
int yynrhs = yyr2_[yyrule];
/* Print the symbols being reduced, and their result. */
*yycdebug_ << "Reducing stack by rule " << yyrule - 1
- << " (line " << yylno << "):" << std::endl;
+ << " (line " << yylno << "):" << std::endl;
/* The symbols being reduced. */
for (int yyi = 0; yyi < yynrhs; yyi++)
YY_SYMBOL_PRINT (" $" << yyi + 1 << " =",
projects / bison.git / blobdiff