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183 lines
7.8 KiB
183 lines
7.8 KiB
/* /////////////////////////////////////////////////////////////////////////
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* File: stlsoft/meta/member_traits.hpp
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*
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* Purpose: An amalgamation of meta traits that's been pending reification
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* for too long.
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*
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* Created: 11th October 2004
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* Updated: 10th August 2009
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*
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* Home: http://stlsoft.org/
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*
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* Copyright (c) 2004-2009, Matthew Wilson and Synesis Software
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
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* any contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* ////////////////////////////////////////////////////////////////////// */
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/** \file stlsoft/meta/member_traits.hpp
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*
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* \brief [C++ only] Definition of the stlsoft::member_traits component
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* (\ref group__library__meta "Template Meta-programming" Library).
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*/
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// An amalgamation of meta traits that's been pending reification for too long.
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//
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// It defines the member_traits template, which is used to detect the members
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// supported by a given type.
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#ifndef STLSOFT_INCL_STLSOFT_META_HPP_MEMBER_TRAITS
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#define STLSOFT_INCL_STLSOFT_META_HPP_MEMBER_TRAITS
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#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
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# define STLSOFT_VER_STLSOFT_META_HPP_MEMBER_TRAITS_MAJOR 2
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# define STLSOFT_VER_STLSOFT_META_HPP_MEMBER_TRAITS_MINOR 1
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# define STLSOFT_VER_STLSOFT_META_HPP_MEMBER_TRAITS_REVISION 1
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# define STLSOFT_VER_STLSOFT_META_HPP_MEMBER_TRAITS_EDIT 37
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#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
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/* /////////////////////////////////////////////////////////////////////////
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* Auto-generation and compatibility
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*/
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/*
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[Incompatibilies-start]
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STLSOFT_COMPILER_IS_BORLAND:
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STLSOFT_COMPILER_IS_DMC: __DMC__ < 0x0845
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STLSOFT_COMPILER_IS_MSVC: _MSC_VER < 1310
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STLSOFT_COMPILER_IS_WATCOM:
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[Incompatibilies-end]
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*/
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/* /////////////////////////////////////////////////////////////////////////
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* Includes
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*/
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#ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT
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# include <stlsoft/stlsoft.h>
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#endif /* !STLSOFT_INCL_STLSOFT_H_STLSOFT */
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#ifndef STLSOFT_INCL_STLSOFT_META_HPP_CAPABILITIES
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# include <stlsoft/meta/capabilities.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_META_HPP_CAPABILITIES */
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#ifndef STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED
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# error This file is not compatible with compilers that do not support member type detection
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#endif /* !STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED */
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#ifndef STLSOFT_INCL_STLSOFT_META_HPP_DETECTORS
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# include <stlsoft/meta/detectors.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_META_HPP_DETECTORS */
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/* /////////////////////////////////////////////////////////////////////////
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* Namespace
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*/
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#ifndef _STLSOFT_NO_NAMESPACE
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namespace stlsoft
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{
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#endif /* _STLSOFT_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Classes
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*/
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/** \brief A structure that can be used to report whether various well-known
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* facets of a type are supported
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*
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* \ingroup group__library__meta
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*
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*
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* member_traits may be used in the compile-time evaluation of whether a given
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* type has certain members, as follows:
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*
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\code
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\endcode
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*/
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template<ss_typename_param_k T>
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struct member_traits
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{
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public:
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typedef T value_type;
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typedef member_traits<T> class_type;
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/// \name Member Constants
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/// @{
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public:
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#if defined(STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED)
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enum { has_member_iterator_category = 0 != has_iterator_category<T>::value /*!< Indicates whether the type has an \c iterator_category member */ };
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enum { has_member_value_type = 0 != has_value_type<T>::value /*!< Indicates whether the type has a \c value_type member */ };
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enum { has_member_distance_type = 0 != has_distance_type<T>::value /*!< Indicates whether the type has a \c distance_type member */ };
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enum { has_member_pointer = 0 != has_pointer<T>::value /*!< Indicates whether the type has a \c pointer member */ };
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enum { has_member_pointer_type = 0 != has_pointer_type<T>::value /*!< Indicates whether the type has a \c pointer_type member */ };
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enum { has_member_iterator = 0 != has_iterator<T>::value /*!< Indicates whether the type has an \c iterator member */ };
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# if !defined(STLSOFT_COMPILER_IS_DMC) || \
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__DMC__ >= 0x0845
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enum { has_member_const_iterator = 0 != has_const_iterator<T>::value /*!< Indicates whether the type has a \c const_iterator member */ };
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# endif /* compiler */
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enum { has_member_const_pointer = 0 != has_const_pointer<T>::value /*!< Indicates whether the type has a \c const_pointer member */ };
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# if defined(STLSOFT_COMPILER_IS_MWERKS)
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enum { has_member_reference = 0 != has_reference<T>::value /*!< Indicates whether the type has a \c reference member */ };
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enum { has_member_reference_type = 0 != has_reference_type<T>::value /*!< Indicates whether the type has a \c reference_type member */ };
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enum { has_member_const_reference = 0 != has_const_reference<T>::value /*!< Indicates whether the type has a \c const_reference member */ };
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# endif /* compiler */
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enum { has_member_difference_type = 0 != has_difference_type<T>::value /*!< Indicates whether the type has a \c difference_type member */ };
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enum { has_member_key_type = 0 != has_key_type<T>::value /*!< Indicates whether the type has a \c key_type member */ };
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enum { has_member_mapped_type = 0 != has_mapped_type<T>::value /*!< Indicates whether the type has a \c mapped_type member */ };
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enum { has_member_referent_type = 0 != has_referent_type<T>::value /*!< Indicates whether the type has a \c referent_type member */ };
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#endif /* STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED */
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/// @}
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// Not to be implemented
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private:
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member_traits();
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#ifdef STLSOFT_CF_COMPILER_WARNS_NO_PUBLIC_DTOR
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protected:
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#endif /* STLSOFT_CF_COMPILER_WARNS_NO_PUBLIC_DTOR */
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member_traits(class_type const& rhs);
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class_type& operator =(class_type const& rhs);
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};
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/* ////////////////////////////////////////////////////////////////////// */
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#ifndef _STLSOFT_NO_NAMESPACE
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} // namespace stlsoft
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#endif /* _STLSOFT_NO_NAMESPACE */
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/* ////////////////////////////////////////////////////////////////////// */
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#endif /* !STLSOFT_INCL_STLSOFT_META_HPP_MEMBER_TRAITS */
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/* ///////////////////////////// end of file //////////////////////////// */
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