forked from boostorg/mpl
128 lines
3.1 KiB
C++
128 lines
3.1 KiB
C++
//-----------------------------------------------------------------------------
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// boost mpl/logical/or.hpp header file
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// See http://www.boost.org for updates, documentation, and revision history.
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//-----------------------------------------------------------------------------
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//
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// Copyright (c) 2000-02
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// Aleksey Gurtovoy
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//
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// Permission to use, copy, modify, distribute and sell this software
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// and its documentation for any purpose is hereby granted without fee,
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// provided that the above copyright notice appears in all copies and
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// that both the copyright notice and this permission notice appear in
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// supporting documentation. No representations are made about the
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// suitability of this software for any purpose. It is provided "as is"
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// without express or implied warranty.
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#ifndef BOOST_MPL_LOGICAL_OR_HPP_INCLUDED
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#define BOOST_MPL_LOGICAL_OR_HPP_INCLUDED
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#include "boost/mpl/bool_c.hpp"
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#include "boost/mpl/aux_/nested_type_wknd.hpp"
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#include "boost/mpl/aux_/void_spec.hpp"
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#include "boost/mpl/aux_/lambda_support.hpp"
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#include "boost/config.hpp"
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namespace boost {
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namespace mpl {
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namespace aux {
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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template<
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bool C, typename T1, typename T2, typename T3, typename T4
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>
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struct logical_or_impl
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: true_c
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{
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};
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template<
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typename T1, typename T2, typename T3, typename T4
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>
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struct logical_or_impl<false,T1,T2,T3,T4>
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: logical_or_impl<
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BOOST_MPL_AUX_NESTED_TYPE_WKND(T1)::value,T2,T3,T4,false_c
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>
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{
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};
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template<>
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struct logical_or_impl<false,false_c,false_c,false_c,false_c>
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: false_c
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{
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};
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#else
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template< bool C > struct logical_or_impl
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{
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template<
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typename T1, typename T2, typename T3, typename T4
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>
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struct result_
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: true_c
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{
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};
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};
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template<> struct logical_or_impl<false>
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{
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template<
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typename T1, typename T2, typename T3, typename T4
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>
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struct result_
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: logical_or_impl< BOOST_MPL_AUX_NESTED_TYPE_WKND(T1)::value >
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::template result_<T2,T3,T4,false_c>
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{
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};
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#if defined(BOOST_MSVC) && BOOST_MSVC == 1300
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template<>
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struct result_<false_c,false_c,false_c,false_c>
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: false_c
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{
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};
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};
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#else
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};
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template<>
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struct logical_or_impl<false>::result_<false_c,false_c,false_c,false_c>
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: false_c
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{
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};
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#endif // BOOST_MSVC == 1300
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#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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} // namespace aux
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template<
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typename BOOST_MPL_AUX_VOID_SPEC_PARAM(T1)
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, typename BOOST_MPL_AUX_VOID_SPEC_PARAM(T2)
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, typename T3 = false_c
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, typename T4 = false_c
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, typename T5 = false_c
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>
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struct logical_or
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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: aux::logical_or_impl<
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BOOST_MPL_AUX_NESTED_TYPE_WKND(T1)::value,T2,T3,T4,T5
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>
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#else
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: aux::logical_or_impl< BOOST_MPL_AUX_NESTED_TYPE_WKND(T1)::value>
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::template result_<T2,T3,T4,T5>
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#endif
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{
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BOOST_MPL_AUX_LAMBDA_SUPPORT(5,logical_or,(T1,T2,T3,T4,T5))
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};
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BOOST_MPL_AUX_VOID_SPEC_EXT(2,5,logical_or)
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} // namespace mpl
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} // namespace boost
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#endif // BOOST_MPL_LOGICAL_OR_HPP_INCLUDED
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