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])[
#endif
-/* Enabling verbose error messages. */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
-#endif
-
-/* Enabling the token table. */
-#ifndef YYTOKEN_TABLE
-# define YYTOKEN_TABLE ]b4_token_table[
-#endif
-
]b4_namespace_open[
/// A Bison parser.
/// \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;
static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_;
- /* Tables. */
-]b4_parser_tables_declare[
-
-#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
- /// For a symbol, its name in clear.
- static const char* const yytname_[];
-#endif]b4_error_verbose_if([
+ // Tables.
+]b4_parser_tables_declare[]b4_error_verbose_if([
/// Convert the symbol name \a n to a form suitable for a diagnostic.
static std::string yytnamerr_ (const char *n);])[
-#if YYDEBUG
+]b4_token_table_if([], [[#if YYDEBUG]])[
+ /// For a symbol, its name in clear.
+ static const char* const yytname_[];
+]b4_token_table_if([[#if YYDEBUG]])[
]b4_integral_parser_table_declare([rline], [b4_rline],
[YYRLINE[YYN] -- Source line where rule number YYN was defined.])[
/// Report on the debug stream that the rule \a r is going to be reduced.
/// Print the state stack on the debug stream.
virtual void yystack_print_ ();
- /* Debugging. */
+ // Debugging.
int yydebug_;
std::ostream* yycdebug_;
-#endif
+#endif // YYDEBUG
/// Convert a scanner token number \a t to a symbol number.
static inline token_number_type yytranslate_ (]b4_lex_symbol_if([token_type], [int])[ t);
/* 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
#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([
{
yydebug_ = l;
}
-#endif
+#endif // YYDEBUG
inline ]b4_parser_class_name[::state_type
]b4_parser_class_name[::yy_lr_goto_state_ (state_type yystate, int yylhs)
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],
+[ 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);
}
catch (const syntax_error& yyexc)
{
- error (]b4_args(b4_locations_if([yyexc.location]),
- [[yyexc.what()]])[);
+ error (yyexc);
YYERROR;
}
YY_SYMBOL_PRINT ("-> $$ =", yylhs);
// Destroy a variant which value may have been swapped with
// yylhs.value (for instance if the action was "std::swap($$,
// $1)"). The value of yylhs.value (hence possibly one of these
- // rhs symbols) depends on the default contruction for this
+ // rhs symbols) depends on the default construction for this
// type. In the case of pointers for instance, no
// initialization is done, so the value is junk. Therefore do
// not try to report the value of symbols about to be destroyed
// 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;
/*--------------------------------------.
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) \
]b4_parser_tables_define[
-#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+]b4_token_table_if([], [[#if YYDEBUG]])[
/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
First, the terminals, then, starting at \a yyntokens_, nonterminals. */
const char*
{
]b4_tname[
};
-#endif
-#if YYDEBUG
+]b4_token_table_if([[#if YYDEBUG]])[
]b4_integral_parser_table_define([rline], [b4_rline])[
// Print the state stack on the debug stream.
projects / bison.git / blobdiff