// TR1 type_traits -*- C++ -*-
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// TR1 type_traits -*- C++ -*-
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// Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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// Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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//
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// .
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// .
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/** @file tr1/type_traits
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/** @file tr1/type_traits
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* This is a TR1 C++ Library header.
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* This is a TR1 C++ Library header.
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*/
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*/
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#ifndef _GLIBCXX_TR1_TYPE_TRAITS
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#ifndef _GLIBCXX_TR1_TYPE_TRAITS
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#define _GLIBCXX_TR1_TYPE_TRAITS 1
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#define _GLIBCXX_TR1_TYPE_TRAITS 1
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#pragma GCC system_header
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#pragma GCC system_header
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#if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
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#if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
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# error TR1 header cannot be included from C++0x header
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# error TR1 header cannot be included from C++0x header
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#endif
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#endif
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#include
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#include
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#if defined(_GLIBCXX_INCLUDE_AS_TR1)
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#if defined(_GLIBCXX_INCLUDE_AS_TR1)
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# include
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# include
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#else
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#else
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# define _GLIBCXX_INCLUDE_AS_TR1
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# define _GLIBCXX_INCLUDE_AS_TR1
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# define _GLIBCXX_BEGIN_NAMESPACE_TR1 namespace tr1 {
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# define _GLIBCXX_BEGIN_NAMESPACE_TR1 namespace tr1 {
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# define _GLIBCXX_END_NAMESPACE_TR1 }
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# define _GLIBCXX_END_NAMESPACE_TR1 }
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# define _GLIBCXX_TR1 tr1::
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# define _GLIBCXX_TR1 tr1::
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# include
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# include
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# undef _GLIBCXX_TR1
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# undef _GLIBCXX_TR1
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# undef _GLIBCXX_END_NAMESPACE_TR1
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# undef _GLIBCXX_END_NAMESPACE_TR1
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# undef _GLIBCXX_BEGIN_NAMESPACE_TR1
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# undef _GLIBCXX_BEGIN_NAMESPACE_TR1
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# undef _GLIBCXX_INCLUDE_AS_TR1
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# undef _GLIBCXX_INCLUDE_AS_TR1
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#endif
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#endif
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namespace std
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namespace std
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{
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{
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namespace tr1
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namespace tr1
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{
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{
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#define _DEFINE_SPEC(_Trait, _Type) \
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#define _DEFINE_SPEC(_Trait, _Type) \
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template<> \
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template<> \
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struct _Trait<_Type> \
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struct _Trait<_Type> \
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: public true_type { };
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: public true_type { };
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template
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template
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struct is_reference
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struct is_reference
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: public false_type { };
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: public false_type { };
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template
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template
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struct is_reference<_Tp&>
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struct is_reference<_Tp&>
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: public true_type { };
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: public true_type { };
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template
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template
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struct is_pod
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struct is_pod
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct has_trivial_constructor
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struct has_trivial_constructor
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct has_trivial_copy
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struct has_trivial_copy
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct has_trivial_assign
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struct has_trivial_assign
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct has_trivial_destructor
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struct has_trivial_destructor
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct has_nothrow_constructor
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struct has_nothrow_constructor
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct has_nothrow_copy
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struct has_nothrow_copy
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct has_nothrow_assign
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struct has_nothrow_assign
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: public integral_constant::value>
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: public integral_constant::value>
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{ };
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{ };
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template
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template
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struct __is_signed_helper
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struct __is_signed_helper
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: public false_type { };
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: public false_type { };
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_DEFINE_SPEC(__is_signed_helper, signed char)
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_DEFINE_SPEC(__is_signed_helper, signed char)
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_DEFINE_SPEC(__is_signed_helper, short)
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_DEFINE_SPEC(__is_signed_helper, short)
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_DEFINE_SPEC(__is_signed_helper, int)
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_DEFINE_SPEC(__is_signed_helper, int)
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_DEFINE_SPEC(__is_signed_helper, long)
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_DEFINE_SPEC(__is_signed_helper, long)
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_DEFINE_SPEC(__is_signed_helper, long long)
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_DEFINE_SPEC(__is_signed_helper, long long)
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template
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template
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struct is_signed
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struct is_signed
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: public integral_constant
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: public integral_constant
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remove_cv<_Tp>::type>::value)>
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remove_cv<_Tp>::type>::value)>
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{ };
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{ };
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template
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template
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struct __is_unsigned_helper
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struct __is_unsigned_helper
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: public false_type { };
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: public false_type { };
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_DEFINE_SPEC(__is_unsigned_helper, unsigned char)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned char)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned short)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned short)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned int)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned int)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned long)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned long)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned long long)
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_DEFINE_SPEC(__is_unsigned_helper, unsigned long long)
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template
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template
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struct is_unsigned
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struct is_unsigned
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: public integral_constant
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: public integral_constant
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remove_cv<_Tp>::type>::value)>
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remove_cv<_Tp>::type>::value)>
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{ };
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{ };
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template
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template
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struct __is_base_of_helper
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struct __is_base_of_helper
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{
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{
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typedef typename remove_cv<_Base>::type _NoCv_Base;
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typedef typename remove_cv<_Base>::type _NoCv_Base;
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typedef typename remove_cv<_Derived>::type _NoCv_Derived;
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typedef typename remove_cv<_Derived>::type _NoCv_Derived;
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static const bool __value = (is_same<_Base, _Derived>::value
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static const bool __value = (is_same<_Base, _Derived>::value
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|| (__is_base_of(_Base, _Derived)
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|| (__is_base_of(_Base, _Derived)
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&& !is_same<_NoCv_Base,
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&& !is_same<_NoCv_Base,
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_NoCv_Derived>::value));
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_NoCv_Derived>::value));
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};
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};
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template
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template
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struct is_base_of
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struct is_base_of
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: public integral_constant
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: public integral_constant
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__is_base_of_helper<_Base, _Derived>::__value>
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__is_base_of_helper<_Base, _Derived>::__value>
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{ };
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{ };
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template
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template
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struct __is_convertible_simple
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struct __is_convertible_simple
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: public __sfinae_types
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: public __sfinae_types
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{
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{
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private:
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private:
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static __one __test(_To);
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static __one __test(_To);
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static __two __test(...);
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static __two __test(...);
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static _From __makeFrom();
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static _From __makeFrom();
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public:
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public:
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static const bool __value = sizeof(__test(__makeFrom())) == 1;
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static const bool __value = sizeof(__test(__makeFrom())) == 1;
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};
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};
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template
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template
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struct add_reference;
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struct add_reference;
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template
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template
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struct __is_int_or_cref
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struct __is_int_or_cref
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{
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{
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typedef typename remove_reference<_Tp>::type __rr_Tp;
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typedef typename remove_reference<_Tp>::type __rr_Tp;
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static const bool __value = (is_integral<_Tp>::value
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static const bool __value = (is_integral<_Tp>::value
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|| (is_integral<__rr_Tp>::value
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|| (is_integral<__rr_Tp>::value
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&& is_const<__rr_Tp>::value
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&& is_const<__rr_Tp>::value
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&& !is_volatile<__rr_Tp>::value));
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&& !is_volatile<__rr_Tp>::value));
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};
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};
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template
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template
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bool = (is_void<_From>::value || is_void<_To>::value
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bool = (is_void<_From>::value || is_void<_To>::value
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|| is_function<_To>::value || is_array<_To>::value
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|| is_function<_To>::value || is_array<_To>::value
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// This special case is here only to avoid warnings.
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// This special case is here only to avoid warnings.
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|| (is_floating_point
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|| (is_floating_point
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remove_reference<_From>::type>::value
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remove_reference<_From>::type>::value
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&& __is_int_or_cref<_To>::__value))>
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&& __is_int_or_cref<_To>::__value))>
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struct __is_convertible_helper
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struct __is_convertible_helper
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{
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{
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// "An imaginary lvalue of type From...".
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// "An imaginary lvalue of type From...".
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static const bool __value = (__is_convertible_simple
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static const bool __value = (__is_convertible_simple
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add_reference<_From>::type, _To>::__value);
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add_reference<_From>::type, _To>::__value);
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};
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};
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template
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template
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struct __is_convertible_helper<_From, _To, true>
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struct __is_convertible_helper<_From, _To, true>
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{ static const bool __value = (is_void<_To>::value
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{ static const bool __value = (is_void<_To>::value
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|| (__is_int_or_cref<_To>::__value
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|| (__is_int_or_cref<_To>::__value
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&& !is_void<_From>::value)); };
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&& !is_void<_From>::value)); };
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template
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template
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struct is_convertible
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struct is_convertible
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: public integral_constant
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: public integral_constant
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__is_convertible_helper<_From, _To>::__value>
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__is_convertible_helper<_From, _To>::__value>
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{ };
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{ };
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// reference modifications [4.7.2].
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// reference modifications [4.7.2].
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template
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template
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struct remove_reference
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struct remove_reference
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{ typedef _Tp type; };
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{ typedef _Tp type; };
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template
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template
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struct remove_reference<_Tp&>
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struct remove_reference<_Tp&>
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{ typedef _Tp type; };
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{ typedef _Tp type; };
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// NB: Careful with reference to void.
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// NB: Careful with reference to void.
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template::value
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template::value
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|| is_reference<_Tp>::value)>
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|| is_reference<_Tp>::value)>
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struct __add_reference_helper
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struct __add_reference_helper
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{ typedef _Tp& type; };
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{ typedef _Tp& type; };
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template
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template
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struct __add_reference_helper<_Tp, true>
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struct __add_reference_helper<_Tp, true>
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{ typedef _Tp type; };
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{ typedef _Tp type; };
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template
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template
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struct add_reference
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struct add_reference
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: public __add_reference_helper<_Tp>
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: public __add_reference_helper<_Tp>
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{ };
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{ };
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// other transformations [4.8].
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// other transformations [4.8].
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template
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template
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struct aligned_storage
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struct aligned_storage
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{
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{
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union type
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union type
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{
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{
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unsigned char __data[_Len];
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unsigned char __data[_Len];
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struct __attribute__((__aligned__((_Align)))) { } __align;
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struct __attribute__((__aligned__((_Align)))) { } __align;
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};
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};
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};
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};
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#undef _DEFINE_SPEC
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#undef _DEFINE_SPEC
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}
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}
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}
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}
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#endif // _GLIBCXX_TR1_TYPE_TRAITS
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#endif // _GLIBCXX_TR1_TYPE_TRAITS
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