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Implement the Library Fundamentals v1 variable templates.

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2014-10-17  Ville Voutilainen  <ville.voutilainen@gmail.com>

	Implement the Library Fundamentals v1 variable templates.
	* include/Makefile.am: Add the new header.
	* include/Makefile.in: Regenerate.
	* include/experimental/type_traits: New.
	* testsuite/experimental/type_traits/value.cc: Likewise.

From-SVN: r216397
This commit is contained in:
Ville Voutilainen 2014-10-17 15:21:21 +03:00 • committed by Jonathan Wakely
parent a342326069
commit 37285913f3
5 changed files with 562 additions and 2 deletions
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8
libstdc++-v3/ChangeLog
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@ -1,3 +1,11 @@
2014-10-17 Ville Voutilainen <ville.voutilainen@gmail.com>
Implement the Library Fundamentals v1 variable templates.
* include/Makefile.am: Add the new header.
* include/Makefile.in: Regenerate.
* include/experimental/type_traits: New.
* testsuite/experimental/type_traits/value.cc: Likewise.
2014-10-16 Paolo Carlini <paolo.carlini@oracle.com>
* testsuite/lib/libstdc++.exp: Prefer -std=gnu++11.

3
libstdc++-v3/include/Makefile.am
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@ -643,7 +643,8 @@ experimental_headers = \
${experimental_srcdir}/optional \
${experimental_srcdir}/string_view \
${experimental_srcdir}/string_view.tcc \
${experimental_srcdir}/tuple
${experimental_srcdir}/tuple \
${experimental_srcdir}/type_traits
# This is the common subset of C++ files that all three "C" header models use.
c_base_srcdir = $(C_INCLUDE_DIR)

3
libstdc++-v3/include/Makefile.in
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@ -909,7 +909,8 @@ experimental_headers = \
${experimental_srcdir}/optional \
${experimental_srcdir}/string_view \
${experimental_srcdir}/string_view.tcc \
${experimental_srcdir}/tuple
${experimental_srcdir}/tuple \
${experimental_srcdir}/type_traits
# This is the common subset of C++ files that all three "C" header models use.

226
libstdc++-v3/include/experimental/type_traits Normal file
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@ -0,0 +1,226 @@
// Variable Templates For Type Traits -*- C++ -*-
// Copyright (C) 2014 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 3, 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file experimental/type_traits
* This is a TS C++ Library header.
*/
//
// N3932 Variable Templates For Type Traits (Revision 1)
//
#ifndef _GLIBCXX_EXPERIMENTAL_TYPE_TRAITS
#define _GLIBCXX_EXPERIMENTAL_TYPE_TRAITS 1
#pragma GCC system_header
#if __cplusplus <= 201103L
# include <bits/c++14_warning.h>
#else
#include <type_traits>
namespace std _GLIBCXX_VISIBILITY(default)
{
namespace experimental
{
inline namespace fundamentals_v1
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
// See C++14 §20.10.4.1, primary type categories
template <typename _Tp>
constexpr bool is_void_v = is_void<_Tp>::value;
template <typename _Tp>
constexpr bool is_null_pointer_v = is_null_pointer<_Tp>::value;
template <typename _Tp>
constexpr bool is_integral_v = is_integral<_Tp>::value;
template <typename _Tp>
constexpr bool is_floating_point_v = is_floating_point<_Tp>::value;
template <typename _Tp>
constexpr bool is_array_v = is_array<_Tp>::value;
template <typename _Tp>
constexpr bool is_pointer_v = is_pointer<_Tp>::value;
template <typename _Tp>
constexpr bool is_lvalue_reference_v = is_lvalue_reference<_Tp>::value;
template <typename _Tp>
constexpr bool is_rvalue_reference_v = is_rvalue_reference<_Tp>::value;
template <typename _Tp>
constexpr bool is_member_object_pointer_v =
is_member_object_pointer<_Tp>::value;
template <typename _Tp>
constexpr bool is_member_function_pointer_v =
is_member_function_pointer<_Tp>::value;
template <typename _Tp>
constexpr bool is_enum_v = is_enum<_Tp>::value;
template <typename _Tp>
constexpr bool is_union_v = is_union<_Tp>::value;
template <typename _Tp>
constexpr bool is_class_v = is_class<_Tp>::value;
template <typename _Tp>
constexpr bool is_function_v = is_function<_Tp>::value;
// See C++14 §20.10.4.2, composite type categories
template <typename _Tp>
constexpr bool is_reference_v = is_reference<_Tp>::value;
template <typename _Tp>
constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value;
template <typename _Tp>
constexpr bool is_fundamental_v = is_fundamental<_Tp>::value;
template <typename _Tp>
constexpr bool is_object_v = is_object<_Tp>::value;
template <typename _Tp>
constexpr bool is_scalar_v = is_scalar<_Tp>::value;
template <typename _Tp>
constexpr bool is_compound_v = is_compound<_Tp>::value;
template <typename _Tp>
constexpr bool is_member_pointer_v = is_member_pointer<_Tp>::value;
// See C++14 §20.10.4.3, type properties
template <typename _Tp>
constexpr bool is_const_v = is_const<_Tp>::value;
template <typename _Tp>
constexpr bool is_volatile_v = is_volatile<_Tp>::value;
template <typename _Tp>
constexpr bool is_trivial_v = is_trivial<_Tp>::value;
template <typename _Tp>
constexpr bool is_trivially_copyable_v = is_trivially_copyable<_Tp>::value;
template <typename _Tp>
constexpr bool is_standard_layout_v = is_standard_layout<_Tp>::value;
template <typename _Tp>
constexpr bool is_pod_v = is_pod<_Tp>::value;
template <typename _Tp>
constexpr bool is_literal_type_v = is_literal_type<_Tp>::value;
template <typename _Tp>
constexpr bool is_empty_v = is_empty<_Tp>::value;
template <typename _Tp>
constexpr bool is_polymorphic_v = is_polymorphic<_Tp>::value;
template <typename _Tp>
constexpr bool is_abstract_v = is_abstract<_Tp>::value;
template <typename _Tp>
constexpr bool is_final_v = is_final<_Tp>::value;
template <typename _Tp>
constexpr bool is_signed_v = is_signed<_Tp>::value;
template <typename _Tp>
constexpr bool is_unsigned_v = is_unsigned<_Tp>::value;
template <typename _Tp, typename... _Args>
constexpr bool is_constructible_v = is_constructible<_Tp, _Args...>::value;
template <typename _Tp>
constexpr bool is_default_constructible_v =
is_default_constructible<_Tp>::value;
template <typename _Tp>
constexpr bool is_copy_constructible_v = is_copy_constructible<_Tp>::value;
template <typename _Tp>
constexpr bool is_move_constructible_v = is_move_constructible<_Tp>::value;
template <typename _Tp, typename _Up>
constexpr bool is_assignable_v = is_assignable<_Tp, _Up>::value;
template <typename _Tp>
constexpr bool is_copy_assignable_v = is_copy_assignable<_Tp>::value;
template <typename _Tp>
constexpr bool is_move_assignable_v = is_move_assignable<_Tp>::value;
template <typename _Tp>
constexpr bool is_destructible_v = is_destructible<_Tp>::value;
template <typename _Tp, typename... _Args>
constexpr bool is_trivially_constructible_v =
is_trivially_constructible<_Tp, _Args...>::value;
template <typename _Tp>
constexpr bool is_trivially_default_constructible_v =
is_trivially_default_constructible<_Tp>::value;
template <typename _Tp>
constexpr bool is_trivially_copy_constructible_v =
is_trivially_copy_constructible<_Tp>::value;
template <typename _Tp>
constexpr bool is_trivially_move_constructible_v =
is_trivially_move_constructible<_Tp>::value;
template <typename _Tp, typename _Up>
constexpr bool is_trivially_assignable_v =
is_trivially_assignable<_Tp, _Up>::value;
template <typename _Tp>
constexpr bool is_trivially_copy_assignable_v =
is_trivially_copy_assignable<_Tp>::value;
template <typename _Tp>
constexpr bool is_trivially_move_assignable_v =
is_trivially_move_assignable<_Tp>::value;
template <typename _Tp>
constexpr bool is_trivially_destructible_v =
is_trivially_destructible<_Tp>::value;
template <typename _Tp, typename... _Args>
constexpr bool is_nothrow_constructible_v =
is_nothrow_constructible<_Tp, _Args...>::value;
template <typename _Tp>
constexpr bool is_nothrow_default_constructible_v =
is_nothrow_default_constructible<_Tp>::value;
template <typename _Tp>
constexpr bool is_nothrow_copy_constructible_v =
is_nothrow_copy_constructible<_Tp>::value;
template <typename _Tp>
constexpr bool is_nothrow_move_constructible_v =
is_nothrow_move_constructible<_Tp>::value;
template <typename _Tp, typename _Up>
constexpr bool is_nothrow_assignable_v =
is_nothrow_assignable<_Tp, _Up>::value;
template <typename _Tp>
constexpr bool is_nothrow_copy_assignable_v =
is_nothrow_copy_assignable<_Tp>::value;
template <typename _Tp>
constexpr bool is_nothrow_move_assignable_v =
is_nothrow_move_assignable<_Tp>::value;
template <typename _Tp>
constexpr bool is_nothrow_destructible_v =
is_nothrow_destructible<_Tp>::value;
template <typename _Tp>
constexpr bool has_virtual_destructor_v =
has_virtual_destructor<_Tp>::value;
// See C++14 §20.10.5, type property queries
template <typename _Tp>
constexpr size_t alignment_of_v = alignment_of<_Tp>::value;
template <typename _Tp>
constexpr size_t rank_v = rank<_Tp>::value;
template <typename _Tp, unsigned _Idx = 0>
constexpr size_t extent_v = extent<_Tp, _Idx>::value;
// See C++14 §20.10.6, type relations
template <typename _Tp, typename _Up>
constexpr bool is_same_v = is_same<_Tp, _Up>::value;
template <typename _Base, typename _Derived>
constexpr bool is_base_of_v = is_base_of<_Base, _Derived>::value;
template <typename _From, typename _To>
constexpr bool is_convertible_v = is_convertible<_From, _To>::value;
// 3.3.2, Other type transformations
// invocation_type (still unimplemented)
// raw_invocation_type (still unimplemented)
// invocation_type_t (still unimplemented)
// raw_invocation_type_t (still unimplemented)
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace fundamentals_v1
} // namespace experimental
} // namespace std
#endif // __cplusplus <= 201103L
#endif // _GLIBCXX_EXPERIMENTAL_TYPE_TRAITS

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libstdc++-v3/testsuite/experimental/type_traits/value.cc Normal file
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@ -0,0 +1,324 @@
// { dg-options "-std=gnu++14" }
// { dg-do compile }
// Copyright (C) 2014 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 3, 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 moved_to of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <experimental/type_traits>
using namespace std;
using namespace std::experimental;
// These tests are rather simple, the front-end tests already test
// variable templates, and the library tests for the underlying
// traits are more elaborate. These are just simple sanity tests.
static_assert(is_void_v<void> && is_void<void>::value, "");
static_assert(!is_void_v<int> && !is_void<int>::value, "");
static_assert(is_null_pointer_v<nullptr_t>
&& is_null_pointer<nullptr_t>::value, "");
static_assert(!is_null_pointer_v<void*>
&& !is_null_pointer<void*>::value, "");
static_assert(is_integral_v<int> && is_integral<int>::value, "");
static_assert(!is_integral_v<int*> && !is_integral<int*>::value, "");
static_assert(is_floating_point_v<float>
&& is_floating_point<float>::value, "");
static_assert(!is_floating_point_v<int>
&& !is_floating_point<int>::value, "");
static_assert(is_array_v<char[42]> && is_array<char[42]>::value, "");
static_assert(!is_array_v<char*> && !is_array<char*>::value, "");
static_assert(is_pointer_v<int*> && is_pointer<int*>::value, "");
static_assert(!is_pointer_v<int> && !is_pointer<int>::value, "");
static_assert(is_lvalue_reference_v<int&>
&& is_lvalue_reference<int&>::value, "");
static_assert(!is_lvalue_reference_v<int>
&& !is_lvalue_reference<int>::value, "");
static_assert(is_rvalue_reference_v<int&&>
&& is_rvalue_reference<int&&>::value, "");
static_assert(!is_rvalue_reference_v<int>
&& !is_rvalue_reference<int>::value, "");
struct EmptyFinal final {};
static_assert(is_member_object_pointer_v<int (EmptyFinal::*)>
&& is_member_object_pointer<int (EmptyFinal::*)>::value, "");
static_assert(!is_member_object_pointer_v<void*>
&& !is_member_object_pointer<void*>::value, "");
static_assert(is_member_function_pointer_v<int (EmptyFinal::*)()>
&& is_member_function_pointer<int (EmptyFinal::*)()>::value, "");
static_assert(!is_member_function_pointer_v<void*>
&& !is_member_function_pointer<void*>::value, "");
enum Enum {};
static_assert(is_enum_v<Enum> && is_enum<Enum>::value, "");
static_assert(!is_enum_v<int> && !is_enum<int>::value, "");
union Union;
static_assert(is_union_v<Union> && is_union<Union>::value, "");
static_assert(!is_union_v<int> && !is_union<int>::value, "");
static_assert(is_class_v<EmptyFinal> && is_class<EmptyFinal>::value, "");
static_assert(!is_class_v<int> && !is_class<int>::value, "");
static_assert(is_function_v<void()> && is_function<void()>::value, "");
static_assert(!is_function_v<void(*)()> && !is_function<void(*)()>::value, "");
static_assert(is_reference_v<int&> && is_reference<int&>::value, "");
static_assert(!is_reference_v<int> && !is_reference<int>::value, "");
static_assert(is_arithmetic_v<int> && is_arithmetic<int>::value, "");
static_assert(!is_arithmetic_v<void*> && !is_arithmetic<void*>::value, "");
static_assert(is_fundamental_v<int> && is_fundamental<int>::value, "");
static_assert(!is_fundamental_v<EmptyFinal>
&& !is_fundamental<EmptyFinal>::value, "");
static_assert(is_object_v<int> && is_object<int>::value, "");
static_assert(!is_object_v<int&> && !is_object<int&>::value, "");
static_assert(is_scalar_v<int> && is_scalar<int>::value, "");
static_assert(!is_scalar_v<int&> && !is_scalar<int&>::value, "");
static_assert(is_compound_v<EmptyFinal>
&& is_compound<EmptyFinal>::value, "");
static_assert(!is_compound_v<int> && !is_compound<int>::value, "");
static_assert(is_member_pointer_v<int (EmptyFinal::*)>
&& is_member_pointer<int (EmptyFinal::*)>::value, "");
static_assert(!is_member_pointer_v<void*>
&& !is_member_pointer<void*>::value, "");
static_assert(is_const_v<const int> && is_const<const int>::value, "");
static_assert(!is_const_v<int> && !is_const<int>::value, "");
static_assert(is_volatile_v<volatile int>
&& is_volatile<volatile int>::value, "");
static_assert(!is_volatile_v<int> && !is_volatile<int>::value, "");
struct NType
{
NType(int);
~NType();
int i;
private:
NType(const NType&);
NType& operator=(const NType&);
int i2;
};
static_assert(is_trivial_v<int> && is_trivial<int>::value, "");
static_assert(!is_trivial_v<NType> && !is_trivial<NType>::value, "");
static_assert(is_trivially_copyable_v<int>
&& is_trivially_copyable<int>::value, "");
static_assert(!is_trivially_copyable_v<NType>
&& !is_trivially_copyable<NType>::value, "");
static_assert(is_standard_layout_v<int>
&& is_standard_layout<int>::value, "");
static_assert(!is_standard_layout_v<NType>
&& !is_standard_layout<NType>::value, "");
static_assert(is_pod_v<int>
&& is_pod<int>::value, "");
static_assert(!is_pod_v<NType>
&& !is_pod<NType>::value, "");
static_assert(is_literal_type_v<int>
&& is_literal_type<int>::value, "");
static_assert(!is_literal_type_v<NType>
&& !is_literal_type<NType>::value, "");
static_assert(is_empty_v<EmptyFinal>
&& is_empty<EmptyFinal>::value, "");
static_assert(!is_empty_v<NType>
&& !is_empty<NType>::value, "");
struct Abstract {protected: virtual ~Abstract() = 0;};
struct Poly : Abstract {virtual ~Poly();};
static_assert(is_polymorphic_v<Poly>
&& is_polymorphic<Poly>::value, "");
static_assert(!is_polymorphic_v<EmptyFinal>
&& !is_polymorphic<EmptyFinal>::value, "");
static_assert(is_abstract_v<Abstract>
&& is_abstract<Abstract>::value, "");
static_assert(!is_abstract_v<EmptyFinal>
&& !is_abstract<EmptyFinal>::value, "");
static_assert(is_final_v<EmptyFinal>
&& is_final<EmptyFinal>::value, "");
static_assert(!is_final_v<Abstract>
&& !is_final<Abstract>::value, "");
static_assert(is_signed_v<int> && is_signed<int>::value, "");
static_assert(!is_signed_v<unsigned int>
&& !is_signed<unsigned int>::value, "");
static_assert(is_constructible_v<int, int>
&& is_constructible<int, int>::value, "");
static_assert(!is_constructible_v<int, void*>
&& !is_constructible<int, void*>::value, "");
static_assert(is_default_constructible_v<int>
&& is_default_constructible<int>::value, "");
static_assert(!is_default_constructible_v<NType>
&& !is_default_constructible<NType>::value, "");
static_assert(is_copy_constructible_v<int>
&& is_copy_constructible<int>::value, "");
static_assert(!is_copy_constructible_v<NType>
&& !is_copy_constructible<NType>::value, "");
static_assert(is_move_constructible_v<int>
&& is_copy_constructible<int>::value, "");
static_assert(!is_move_constructible_v<NType>
&& !is_copy_constructible<NType>::value, "");
static_assert(is_assignable_v<int&, int>
&& is_assignable<int&, int>::value, "");
static_assert(!is_assignable_v<int, int>
&& !is_assignable<int, int>::value, "");
static_assert(is_copy_assignable_v<int>
&& is_copy_assignable<int>::value, "");
static_assert(!is_copy_assignable_v<NType>
&& !is_copy_assignable<NType>::value, "");
static_assert(is_move_assignable_v<int>
&& is_move_assignable<int>::value, "");
static_assert(!is_move_assignable_v<NType>
&& !is_move_assignable<NType>::value, "");
static_assert(is_destructible_v<int>
&& is_destructible<int>::value, "");
static_assert(!is_destructible_v<Abstract>
&& !is_destructible<Abstract>::value, "");
static_assert(is_trivially_constructible_v<int, int>
&& is_trivially_constructible<int, int>::value, "");
static_assert(!is_trivially_constructible_v<NType, NType>
&& !is_trivially_constructible<NType, NType>::value, "");
static_assert(is_trivially_default_constructible_v<int>
&& is_trivially_default_constructible<int>::value, "");
static_assert(!is_trivially_default_constructible_v<NType>
&& !is_trivially_default_constructible<NType>::value, "");
static_assert(is_trivially_copy_constructible_v<int>
&& is_trivially_copy_constructible<int>::value, "");
static_assert(!is_trivially_copy_constructible_v<NType>
&& !is_trivially_copy_constructible<NType>::value, "");
static_assert(is_trivially_move_constructible_v<int>
&& is_trivially_move_constructible<int>::value, "");
static_assert(!is_trivially_move_constructible_v<NType>
&& !is_trivially_move_constructible<NType>::value, "");
static_assert(is_trivially_assignable_v<int&, int>
&& is_trivially_assignable<int&, int>::value, "");
static_assert(!is_trivially_assignable_v<NType, NType>
&& !is_trivially_assignable<NType, NType>::value, "");
static_assert(is_trivially_copy_assignable_v<int>
&& is_trivially_copy_assignable<int>::value, "");
static_assert(!is_trivially_copy_assignable_v<NType>
&& !is_trivially_copy_assignable<NType>::value, "");
static_assert(is_trivially_move_assignable_v<int>
&& is_trivially_move_assignable<int>::value, "");
static_assert(!is_trivially_move_assignable_v<NType>
&& !is_trivially_move_assignable<NType>::value, "");
static_assert(is_trivially_destructible_v<int>
&& is_trivially_destructible<int>::value, "");
static_assert(!is_trivially_destructible_v<Abstract>
&& !is_trivially_destructible<Abstract>::value, "");
static_assert(is_nothrow_constructible_v<int, int>
&& is_nothrow_constructible<int, int>::value, "");
static_assert(!is_nothrow_constructible_v<NType, NType>
&& !is_nothrow_constructible<NType, NType>::value, "");
static_assert(is_nothrow_default_constructible_v<int>
&& is_nothrow_default_constructible<int>::value, "");
static_assert(!is_nothrow_default_constructible_v<NType>
&& !is_nothrow_default_constructible<NType>::value, "");
static_assert(is_nothrow_copy_constructible_v<int>
&& is_nothrow_copy_constructible<int>::value, "");
static_assert(!is_nothrow_copy_constructible_v<NType>
&& !is_nothrow_copy_constructible<NType>::value, "");
static_assert(is_nothrow_move_constructible_v<int>
&& is_nothrow_move_constructible<int>::value, "");
static_assert(!is_nothrow_move_constructible_v<NType>
&& !is_nothrow_move_constructible<NType>::value, "");
static_assert(is_nothrow_assignable_v<int&, int>
&& is_nothrow_assignable<int&, int>::value, "");
static_assert(!is_nothrow_assignable_v<NType, NType>
&& !is_nothrow_assignable<NType, NType>::value, "");
static_assert(is_nothrow_copy_assignable_v<int>
&& is_nothrow_copy_assignable<int>::value, "");
static_assert(!is_nothrow_copy_assignable_v<NType>
&& !is_nothrow_copy_assignable<NType>::value, "");
static_assert(is_nothrow_move_assignable_v<int>
&& is_nothrow_move_assignable<int>::value, "");
static_assert(!is_nothrow_move_assignable_v<NType>
&& !is_nothrow_move_assignable<NType>::value, "");
static_assert(has_virtual_destructor_v<Abstract>
&& has_virtual_destructor<Abstract>::value, "");
static_assert(!has_virtual_destructor_v<NType>
&& !has_virtual_destructor<NType>::value, "");
static_assert(alignment_of_v<int> == alignof(int)
&& alignment_of<int>::value == alignof(int) , "");
static_assert(rank_v<int[1][1]> == rank<int[1][1]>::value, "");
static_assert(extent_v<int[1][2], 1> == 2
&& extent<int[1][2], 1>::value == 2, "");
static_assert(is_same_v<int, int> && is_same<int, int>::value, "");
static_assert(!is_same_v<int, char> && !is_same<int, char>::value, "");
static_assert(is_base_of_v<Abstract, Poly>
&& is_base_of<Abstract, Poly>::value, "");
static_assert(!is_base_of_v<Abstract, NType>
&& !is_base_of<Abstract, NType>::value, "");
static_assert(is_convertible_v<int&, const int&>
&& is_convertible<int&, const int&>::value, "");
static_assert(!is_convertible_v<const int&, int&>
&& !is_convertible<const int&, int&>::value, "");