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type_traits: Implement is_enum (usual caveats about the nasty consequences of c++/19076...).

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2004-12-25  Paolo Carlini  <pcarlini@suse.de>

	* include/tr1/type_traits: Implement is_enum (usual caveats about
	the nasty consequences of c++/19076...).
	* testsuite/testsuite_tr1.h: Add ConvType.
	* testsuite/tr1/4_metaprogramming/composite_type_traits/
	is_scalar/is_scalar.cc: New.
	* testsuite/tr1/4_metaprogramming/composite_type_traits/
	is_scalar/typedefs.cc: Likewise.
	* testsuite/tr1/4_metaprogramming/primary_type_categories/
	is_enum/is_enum.cc: Likewise.
	* testsuite/tr1/4_metaprogramming/primary_type_categories/
	is_enum/typedefs.cc: Likewise.

From-SVN: r92604
This commit is contained in:
Paolo Carlini 2004-12-25 15:24:36 +00:00 committed by Paolo Carlini
parent 7f514158b2
commit a9e7ba8139
7 changed files with 252 additions and 6 deletions
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14
libstdc++-v3/ChangeLog
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@ -1,3 +1,17 @@
2004-12-25 Paolo Carlini <pcarlini@suse.de>
* include/tr1/type_traits: Implement is_enum (usual caveats about
the nasty consequences of c++/19076...).
* testsuite/testsuite_tr1.h: Add ConvType.
* testsuite/tr1/4_metaprogramming/composite_type_traits/
is_scalar/is_scalar.cc: New.
* testsuite/tr1/4_metaprogramming/composite_type_traits/
is_scalar/typedefs.cc: Likewise.
* testsuite/tr1/4_metaprogramming/primary_type_categories/
is_enum/is_enum.cc: Likewise.
* testsuite/tr1/4_metaprogramming/primary_type_categories/
is_enum/typedefs.cc: Likewise.
2004-12-24 Paolo Carlini <pcarlini@suse.de>
* include/tr1/type_traits: Add missing undef.

56
libstdc++-v3/include/tr1/type_traits
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@ -33,7 +33,7 @@ namespace std
{
namespace tr1
{
// For use in is_function and elsewhere.
// For use in is_enum, is_function, and elsewhere.
struct __sfinae_types
{
typedef char __one;
@ -149,14 +149,57 @@ namespace tr1
: public false_type { };
_DEFINE_SPEC(2, is_member_function_pointer, _Tp _Cp::*)
template<typename _Tp, bool = (is_fundamental<_Tp>::value
|| is_array<_Tp>::value
|| is_pointer<_Tp>::value
|| is_reference<_Tp>::value
|| is_member_pointer<_Tp>::value
|| is_function<_Tp>::value)>
struct __is_enum_helper
: public __sfinae_types
{
private:
static __one __test(bool);
static __one __test(char);
static __one __test(signed char);
static __one __test(unsigned char);
#ifdef _GLIBCXX_USE_WCHAR_T
static __one __test(wchar_t);
#endif
static __one __test(short);
static __one __test(unsigned short);
static __one __test(int);
static __one __test(unsigned int);
static __one __test(long);
static __one __test(unsigned long);
static __one __test(long long);
static __one __test(unsigned long long);
static __two __test(...);
template<typename _Up>
struct __convert
{ operator _Up() const; };
public:
static const bool __value = sizeof(__test(__convert<_Tp>())) == 1;
};
template<typename _Tp>
struct __is_enum_helper<_Tp, true>
{ static const bool __value = false; };
template<typename _Tp>
struct is_enum
: integral_constant<bool, __is_enum_helper<_Tp>::__value> { };
template<typename _Tp, bool = (is_reference<_Tp>::value
|| is_void<_Tp>::value)>
struct __is_function_helper
: public __sfinae_types
{
private:
template<typename>
static __one __test(...);
template<typename _Up>
static __two __test(_Up(*)[1]);
@ -164,12 +207,13 @@ namespace tr1
static const bool __value = sizeof(__test<_Tp>(0)) == 1;
};
template<typename _Tp>
struct __is_function_helper<_Tp, true>
{ static const bool __value = false; };
template<typename _Tp>
struct is_function
: public integral_constant<bool, (__is_function_helper<_Tp>::__value
&& !is_reference<_Tp>::value
&& !is_void<_Tp>::value)>
{ };
: public integral_constant<bool, __is_function_helper<_Tp>::__value> { };
/// @brief composite type traits [4.5.2].
template<typename _Tp>

6
libstdc++-v3/testsuite/testsuite_tr1.h
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@ -78,6 +78,12 @@ namespace __gnu_test
typedef const ClassType cClassType;
typedef volatile ClassType vClassType;
typedef const volatile ClassType cvClassType;
enum EnumType { };
struct ConvType
{ operator int() const; };
}; // namespace __gnu_test
#endif // _GLIBCXX_TESTSUITE_TR1_H

50
libstdc++-v3/testsuite/tr1/4_metaprogramming/composite_type_traits/is_scalar/is_scalar.cc Normal file
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@ -0,0 +1,50 @@
// 2004-12-25 Paolo Carlini <pcarlini@suse.de>
//
// Copyright (C) 2004 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option)
// any later version.
//
// This library 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 library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// 4.5.2 Composite type traits
#include <tr1/type_traits>
#include <testsuite_hooks.h>
#include <testsuite_tr1.h>
void test01()
{
bool test __attribute__((unused)) = true;
using std::tr1::is_scalar;
using namespace __gnu_test;
VERIFY( (test_category<is_scalar, int>(true)) );
VERIFY( (test_category<is_scalar, float>(true)) );
VERIFY( (test_category<is_scalar, EnumType>(true)) );
VERIFY( (test_category<is_scalar, int*>(true)) );
VERIFY( (test_category<is_scalar, int(*)(int)>(true)) );
VERIFY( (test_category<is_scalar, int (ClassType::*)>(true)) );
// Temporarily disabled because of c++/19076 :-(
// VERIFY( (test_category<is_scalar, int (ClassType::*) (int)>(true)) );
// Sanity check.
VERIFY( (test_category<is_scalar, ClassType>(false)) );
}
int main()
{
test01();
return 0;
}

36
libstdc++-v3/testsuite/tr1/4_metaprogramming/composite_type_traits/is_scalar/typedefs.cc Normal file
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@ -0,0 +1,36 @@
// 2004-12-25 Paolo Carlini <pcarlini@suse.de>
//
// Copyright (C) 2004 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option)
// any later version.
//
// This library 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 library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
//
// NB: This file is for testing tr1/type_traits with NO OTHER INCLUDES.
#include <tr1/type_traits>
// { dg-do compile }
void test01()
{
// Check for required typedefs
typedef std::tr1::is_scalar<int> test_type;
typedef test_type::value_type value_type;
typedef test_type::type type;
typedef test_type::type::value_type type_value_type;
typedef test_type::type::type type_type;
}

60
libstdc++-v3/testsuite/tr1/4_metaprogramming/primary_type_categories/is_enum/is_enum.cc Normal file
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@ -0,0 +1,60 @@
// 2004-12-25 Paolo Carlini <pcarlini@suse.de>
//
// Copyright (C) 2004 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option)
// any later version.
//
// This library 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 library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// 4.5.1 Primary type categories
#include <tr1/type_traits>
#include <testsuite_hooks.h>
#include <testsuite_tr1.h>
void test01()
{
bool test __attribute__((unused)) = true;
using std::tr1::is_enum;
using namespace __gnu_test;
// Positive tests.
VERIFY( (test_category<is_enum, EnumType>(true)) );
// Negative tests.
VERIFY( (test_category<is_enum, void>(false)) );
VERIFY( (test_category<is_enum, int>(false)) );
VERIFY( (test_category<is_enum, float>(false)) );
VERIFY( (test_category<is_enum, int[2]>(false)) );
VERIFY( (test_category<is_enum, int*>(false)) );
VERIFY( (test_category<is_enum, int(*)(int)>(false)) );
VERIFY( (test_category<is_enum, float&>(false)) );
VERIFY( (test_category<is_enum, float(&)(float)>(false)) );
VERIFY( (test_category<is_enum, int (ClassType::*)>(false)) );
// Temporarily disabled because of c++/19076 :-(
// VERIFY( (test_category<is_enum, int (ClassType::*) (int)>(false)) );
VERIFY( (test_category<is_enum, int (int)>(false)) );
VERIFY( (test_category<is_enum, ConvType>(false)) );
// Sanity check.
VERIFY( (test_category<is_enum, ClassType>(false)) );
}
int main()
{
test01();
return 0;
}

36
libstdc++-v3/testsuite/tr1/4_metaprogramming/primary_type_categories/is_enum/typedefs.cc Normal file
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@ -0,0 +1,36 @@
// 2004-12-25 Paolo Carlini <pcarlini@suse.de>
//
// Copyright (C) 2004 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option)
// any later version.
//
// This library 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 library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
//
// NB: This file is for testing tr1/type_traits with NO OTHER INCLUDES.
#include <tr1/type_traits>
// { dg-do compile }
void test01()
{
// Check for required typedefs
typedef std::tr1::is_enum<int> test_type;
typedef test_type::value_type value_type;
typedef test_type::type type;
typedef test_type::type::value_type type_value_type;
typedef test_type::type::type type_type;
}