forked from boostorg/mpl
141 lines
4.0 KiB
C++
141 lines
4.0 KiB
C++
//-----------------------------------------------------------------------------
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// boost mpl/aux_/void_spec.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) 2001-02
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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_AUX_VOID_SPEC_HPP_INCLUDED
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#define BOOST_MPL_AUX_VOID_SPEC_HPP_INCLUDED
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#include "boost/mpl/lambda_fwd.hpp"
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#include "boost/mpl/void.hpp"
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#include "boost/mpl/aux_/preprocessor/params.hpp"
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#include "boost/mpl/aux_/preprocessor/enum.hpp"
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#include "boost/mpl/aux_/preprocessor/def_params_tail.hpp"
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#include "boost/mpl/aux_/arity.hpp"
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#include "boost/mpl/aux_/template_arity_fwd.hpp"
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#include "boost/mpl/aux_/lambda_arity_param.hpp"
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#include "boost/mpl/aux_/config/dtp.hpp"
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#include "boost/mpl/aux_/config/ttp.hpp"
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#include "boost/mpl/aux_/config/lambda.hpp"
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#include "boost/mpl/aux_/config/overload_resolution.hpp"
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#include "boost/config.hpp"
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#define BOOST_MPL_AUX_VOID_SPEC_PARAMS(i) \
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BOOST_MPL_PP_ENUM(i, void_) \
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/**/
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#if defined(BOOST_BROKEN_DEFAULT_TEMPLATE_PARAMETERS_IN_NESTED_TEMPLATES)
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# define BOOST_MPL_AUX_VOID_SPEC_ARITY(i, name) \
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namespace aux { \
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template< int N > \
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struct arity< \
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name< BOOST_MPL_AUX_VOID_SPEC_PARAMS(i) > \
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, N \
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> \
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{ \
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BOOST_STATIC_CONSTANT(int \
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, value = BOOST_MPL_METAFUNCTION_MAX_ARITY \
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); \
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}; \
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} \
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/**/
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#else
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# define BOOST_MPL_AUX_VOID_SPEC_ARITY(i, name) /**/
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#endif
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#define BOOST_MPL_AUX_VOID_SPEC_MAIN(i, name) \
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template<> \
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struct name< BOOST_MPL_AUX_VOID_SPEC_PARAMS(i) > \
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{ \
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template< \
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BOOST_MPL_PP_PARAMS(i, typename T) \
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BOOST_MPL_PP_NESTED_DEF_PARAMS_TAIL(i, typename T, void_) \
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> \
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struct apply \
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: name< BOOST_MPL_PP_PARAMS(i, T) > \
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{ \
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}; \
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}; \
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/**/
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#if defined(BOOST_MPL_NO_FULL_LAMBDA_SUPPORT)
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# define BOOST_MPL_AUX_VOID_SPEC_LAMBDA(i, name) \
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template<> \
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struct lambda< \
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name< BOOST_MPL_AUX_VOID_SPEC_PARAMS(i) > \
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, true \
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> \
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{ \
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typedef name< BOOST_MPL_AUX_VOID_SPEC_PARAMS(i) > type; \
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}; \
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/**/
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#else
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# define BOOST_MPL_AUX_VOID_SPEC_LAMBDA(i, name) \
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template<> \
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struct lambda< \
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name< BOOST_MPL_AUX_VOID_SPEC_PARAMS(i) > \
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BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(-1) \
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> \
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{ \
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typedef name< BOOST_MPL_AUX_VOID_SPEC_PARAMS(i) > type; \
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}; \
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/**/
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#endif
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#if defined(BOOST_EXTENDED_TEMPLATE_PARAMETERS_MATCHING) || \
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defined(BOOST_MPL_NO_FULL_LAMBDA_SUPPORT) && \
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defined(BOOST_MPL_BROKEN_OVERLOAD_RESOLUTION)
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# define BOOST_MPL_AUX_VOID_SPEC_TEMPLATE_ARITY(i, j, name) \
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namespace aux { \
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template< BOOST_MPL_PP_PARAMS(j, typename T) > \
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struct template_arity< \
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name< BOOST_MPL_PP_PARAMS(j, T) > \
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> \
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{ \
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BOOST_STATIC_CONSTANT(int, value = j); \
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}; \
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\
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template<> \
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struct template_arity< \
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name< BOOST_MPL_PP_ENUM(i, void_) > \
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> \
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{ \
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BOOST_STATIC_CONSTANT(int, value = -1); \
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}; \
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} \
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/**/
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#else
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# define BOOST_MPL_AUX_VOID_SPEC_TEMPLATE_ARITY(i, j, name) /**/
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#endif
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#define BOOST_MPL_AUX_VOID_SPEC_PARAM(param) param = void_
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#define BOOST_MPL_AUX_VOID_SPEC(i, name) \
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BOOST_MPL_AUX_VOID_SPEC_MAIN(i, name) \
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BOOST_MPL_AUX_VOID_SPEC_LAMBDA(i, name) \
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BOOST_MPL_AUX_VOID_SPEC_ARITY(i, name) \
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BOOST_MPL_AUX_VOID_SPEC_TEMPLATE_ARITY(i, i, name) \
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/**/
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#define BOOST_MPL_AUX_VOID_SPEC_EXT(i, j, name) \
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BOOST_MPL_AUX_VOID_SPEC_MAIN(i, name) \
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BOOST_MPL_AUX_VOID_SPEC_LAMBDA(i, name) \
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BOOST_MPL_AUX_VOID_SPEC_ARITY(i, name) \
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BOOST_MPL_AUX_VOID_SPEC_TEMPLATE_ARITY(i, j, name) \
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/**/
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#endif // BOOST_MPL_AUX_VOID_SPEC_HPP_INCLUDED
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