mirror of
https://github.com/boostorg/mpl.git
synced 2025-08-03 14:54:30 +02:00
mpl_v2 checkin
[SVN r13331]
This commit is contained in:
Aleksey Gurtovoy
@@ -1,312 +0,0 @@
|
||||
//-----------------------------------------------------------------------------
|
||||
// boost mpl/apply.hpp header file
|
||||
// See http://www.boost.org for updates, documentation, and revision history.
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
// Copyright (c) 2000-02
|
||||
// Aleksey Gurtovoy
|
||||
//
|
||||
// Permission to use, copy, modify, distribute and sell this software
|
||||
// and its documentation for any purpose is hereby granted without fee,
|
||||
// provided that the above copyright notice appears in all copies and
|
||||
// that both the copyright notice and this permission notice appear in
|
||||
// supporting documentation. No representations are made about the
|
||||
// suitability of this software for any purpose. It is provided "as is"
|
||||
// without express or implied warranty.
|
||||
|
||||
#ifndef BOOST_MPL_APPLY_HPP_INCLUDED
|
||||
#define BOOST_MPL_APPLY_HPP_INCLUDED
|
||||
|
||||
#include "boost/mpl/aux_/config/use_preprocessed.hpp"
|
||||
|
||||
#if defined(BOOST_MPL_USE_PREPROCESSED_HEADERS)
|
||||
# include "boost/mpl/aux_/preprocessed/apply.hpp"
|
||||
#else
|
||||
|
||||
#include "boost/mpl/placeholder.hpp"
|
||||
#include "boost/mpl/limits/arity.hpp"
|
||||
#include "boost/mpl/aux_/lambda_spec.hpp"
|
||||
#include "boost/mpl/aux_/count_if_not.hpp"
|
||||
#include "boost/mpl/aux_/arity.hpp"
|
||||
#include "boost/mpl/aux_/none.hpp"
|
||||
#include "boost/mpl/aux_/msvc_workarounds.hpp"
|
||||
#include "boost/mpl/aux_/preprocessor/params.hpp"
|
||||
#include "boost/mpl/aux_/preprocessor/default_params.hpp"
|
||||
#include "boost/mpl/aux_/preprocessor/enum.hpp"
|
||||
#include "boost/mpl/aux_/preprocessor/project1st.hpp"
|
||||
#include "boost/mpl/aux_/config/dtp.hpp"
|
||||
|
||||
#include "boost/preprocessor/arithmetic/add.hpp"
|
||||
#include "boost/preprocessor/arithmetic/sub.hpp"
|
||||
#include "boost/preprocessor/repeat_2nd.hpp"
|
||||
#include "boost/preprocessor/repeat_3rd.hpp"
|
||||
#include "boost/preprocessor/comma_if.hpp"
|
||||
#include "boost/preprocessor/if.hpp"
|
||||
#include "boost/preprocessor/inc.hpp"
|
||||
#include "boost/config.hpp"
|
||||
|
||||
namespace boost {
|
||||
namespace mpl {
|
||||
|
||||
// local macros, #undef-ined at the end of the header
|
||||
#define AUX_APPLY_PARAMS(param) \
|
||||
BOOST_MPL_PP_PARAMS( \
|
||||
1 \
|
||||
, BOOST_PP_INC(BOOST_MPL_METAFUNCTION_MAX_ARITY) \
|
||||
, param \
|
||||
) \
|
||||
/**/
|
||||
|
||||
#define AUX_APPLY_DEFAULT_PARAMS(param, value) \
|
||||
BOOST_MPL_PP_DEFAULT_PARAMS( \
|
||||
1 \
|
||||
, BOOST_PP_INC(BOOST_MPL_METAFUNCTION_MAX_ARITY) \
|
||||
, param \
|
||||
, value \
|
||||
) \
|
||||
/**/
|
||||
|
||||
#define AUX_APPLY_N_PARAMS(i, param) \
|
||||
BOOST_MPL_PP_PARAMS(1, BOOST_PP_INC(i), param) \
|
||||
/**/
|
||||
|
||||
#define AUX_APPLY_N_PLACEHOLDERS(i) \
|
||||
BOOST_MPL_PP_ENUM(0, BOOST_PP_INC(i), BOOST_MPL_PP_PROJECT2ND, _) \
|
||||
/**/
|
||||
|
||||
#define AUX_APPLY_0_TEMPLATE_DEF(unused) \
|
||||
template< typename F > \
|
||||
struct apply0 : F \
|
||||
{ \
|
||||
}; \
|
||||
\
|
||||
template<> \
|
||||
struct apply0<_> \
|
||||
{ \
|
||||
template< typename F > struct apply \
|
||||
: F \
|
||||
{ \
|
||||
}; \
|
||||
}; \
|
||||
/**/
|
||||
|
||||
#if defined(BOOST_MSVC) && (BOOST_MSVC < 1300)
|
||||
|
||||
// 'apply0' workaround
|
||||
template< typename F > struct apply0;
|
||||
template<> struct apply0<int> { typedef apply0 type; };
|
||||
|
||||
#define AUX_APPLY_N_TEMPLATE_DEF(i) \
|
||||
namespace aux { \
|
||||
BOOST_MPL_AUX_MSVC_DEPENDENT_TEMPLATE_WRAPPER_DEF(msvc_apply##i, apply, i) \
|
||||
} \
|
||||
template< \
|
||||
typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct apply##i \
|
||||
: aux::msvc_apply##i<F>::template result_<AUX_APPLY_N_PARAMS(i, T)> \
|
||||
{ \
|
||||
}; \
|
||||
\
|
||||
template<> \
|
||||
struct apply##i< AUX_APPLY_N_PLACEHOLDERS(i) > \
|
||||
{ \
|
||||
template< \
|
||||
typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct apply \
|
||||
: aux::msvc_apply##i<F>::template result_<AUX_APPLY_N_PARAMS(i, T)> \
|
||||
{ \
|
||||
}; \
|
||||
}; \
|
||||
/**/
|
||||
|
||||
#elif defined(BOOST_NO_DEFAULT_TEMPLATE_PARAMETERS_IN_NESTED_TEMPLATES)
|
||||
// agurt, 10/mar/02: MWCW 8.0 "losts" default template parameters of nested
|
||||
// class templates when their owner classes are passed as arguments to
|
||||
// other templates; in particular, that means that 'apply#' won't work on
|
||||
// the result of 'bind#<..>' expression if no special care is taken;
|
||||
// whatever is below, it is supposed to workaround the problem
|
||||
|
||||
#define AUX_APPLY_IMPL_N_TEMPLATE_SPEC(j,i) \
|
||||
namespace aux { \
|
||||
template< \
|
||||
typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct mwcw_apply##i< \
|
||||
BOOST_PP_ADD(i, j) \
|
||||
, F \
|
||||
, AUX_APPLY_N_PARAMS(i, T) \
|
||||
> \
|
||||
{ \
|
||||
typedef typename F::template apply< \
|
||||
AUX_APPLY_N_PARAMS(i, T) \
|
||||
BOOST_PP_COMMA_IF(j) \
|
||||
BOOST_MPL_PP_ENUM(0, j, BOOST_MPL_PP_PROJECT2ND, aux::none) \
|
||||
> type; \
|
||||
}; \
|
||||
} \
|
||||
/**/
|
||||
|
||||
#define AUX_APPLY_N_TEMPLATE_DEF(i) \
|
||||
namespace aux { \
|
||||
template< \
|
||||
long \
|
||||
, typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct mwcw_apply##i; \
|
||||
} \
|
||||
\
|
||||
BOOST_PP_REPEAT_3RD( \
|
||||
BOOST_PP_INC(BOOST_PP_SUB(BOOST_MPL_METAFUNCTION_MAX_ARITY, i)) \
|
||||
, AUX_APPLY_IMPL_N_TEMPLATE_SPEC \
|
||||
, i \
|
||||
) \
|
||||
\
|
||||
template< \
|
||||
typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct apply##i \
|
||||
: aux::mwcw_apply##i< \
|
||||
aux::arity<F,i>::value \
|
||||
, F \
|
||||
, AUX_APPLY_N_PARAMS(i, T) \
|
||||
>::type \
|
||||
{ \
|
||||
}; \
|
||||
\
|
||||
template<> \
|
||||
struct apply##i< AUX_APPLY_N_PLACEHOLDERS(i) > \
|
||||
{ \
|
||||
template< \
|
||||
typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct apply \
|
||||
: aux::mwcw_apply##i< \
|
||||
aux::arity<F,i>::value \
|
||||
, F \
|
||||
, AUX_APPLY_N_PARAMS(i, T) \
|
||||
>::type \
|
||||
{ \
|
||||
}; \
|
||||
}; \
|
||||
/**/
|
||||
|
||||
#else // #elif defined(BOOST_NO_DEFAULT_TEMPLATE_PARAMETERS_IN_NESTED_TEMPLATES)
|
||||
|
||||
#define AUX_APPLY_N_TEMPLATE_DEF(i) \
|
||||
template< \
|
||||
typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct apply##i \
|
||||
: F::template apply< \
|
||||
AUX_APPLY_N_PARAMS(i, T) \
|
||||
> \
|
||||
{ \
|
||||
}; \
|
||||
\
|
||||
template<> \
|
||||
struct apply##i< AUX_APPLY_N_PLACEHOLDERS(i) > \
|
||||
{ \
|
||||
template< \
|
||||
typename F \
|
||||
, AUX_APPLY_N_PARAMS(i, typename T) \
|
||||
> \
|
||||
struct apply \
|
||||
: F::template apply< \
|
||||
AUX_APPLY_N_PARAMS(i, T) \
|
||||
> \
|
||||
{ \
|
||||
}; \
|
||||
}; \
|
||||
/**/
|
||||
|
||||
#endif // #if defined(BOOST_MSVC) && (BOOST_MSVC < 1300)
|
||||
|
||||
namespace aux {
|
||||
// to be able to define specializations
|
||||
template<long> struct apply_impl_chooser;
|
||||
}
|
||||
|
||||
#define AUX_APPLY_IMPL_CHOOSER_SPEC(i) \
|
||||
namespace aux { \
|
||||
template<> \
|
||||
struct apply_impl_chooser<i> \
|
||||
{ \
|
||||
template< typename F, AUX_APPLY_PARAMS(typename T) > \
|
||||
struct result_ \
|
||||
{ \
|
||||
typedef apply##i< \
|
||||
F \
|
||||
BOOST_PP_COMMA_IF(i) AUX_APPLY_N_PARAMS(i, T) \
|
||||
> type; \
|
||||
}; \
|
||||
}; \
|
||||
} \
|
||||
/**/
|
||||
|
||||
#define AUX_APPLY_TEMPLATE_DEF(i, unused) \
|
||||
BOOST_PP_IF( \
|
||||
i \
|
||||
, AUX_APPLY_N_TEMPLATE_DEF \
|
||||
, AUX_APPLY_0_TEMPLATE_DEF \
|
||||
)(i) \
|
||||
\
|
||||
BOOST_MPL_AUX_LAMBDA_TEMPLATE_SPEC( \
|
||||
BOOST_PP_INC(i) \
|
||||
, apply##i \
|
||||
) \
|
||||
\
|
||||
AUX_APPLY_IMPL_CHOOSER_SPEC(i) \
|
||||
/**/
|
||||
|
||||
|
||||
// apply#
|
||||
BOOST_PP_REPEAT_2ND(
|
||||
BOOST_PP_INC(BOOST_MPL_METAFUNCTION_MAX_ARITY)
|
||||
, AUX_APPLY_TEMPLATE_DEF
|
||||
, unused
|
||||
)
|
||||
|
||||
BOOST_MPL_AUX_COUNT_IF_NOT(apply, BOOST_MPL_METAFUNCTION_MAX_ARITY)
|
||||
|
||||
#if !defined(BOOST_MSVC) || (BOOST_MSVC > 1200)
|
||||
// agurt, 15/jan/02: top-level 'apply' template gives an ICE on MSVC
|
||||
// (for known reasons); numbered form works, though
|
||||
template<
|
||||
typename F
|
||||
, AUX_APPLY_DEFAULT_PARAMS(typename T, aux::none)
|
||||
>
|
||||
struct apply
|
||||
: aux::apply_impl_chooser<
|
||||
aux::apply_count_if_not<aux::none, AUX_APPLY_PARAMS(T)>::value
|
||||
>::template result_< F, AUX_APPLY_PARAMS(T) >::type
|
||||
{
|
||||
};
|
||||
|
||||
#define BOOST_MPL_HAS_APPLY
|
||||
|
||||
#endif // !defined(BOOST_MSVC) || (BOOST_MSVC > 1200)
|
||||
|
||||
#undef AUX_APPLY_TEMPLATE_DEF
|
||||
#undef AUX_APPLY_N_TEMPLATE_DEF
|
||||
#undef AUX_APPLY_0_TEMPLATE_DEF
|
||||
#undef AUX_APPLY_IMPL_N_TEMPLATE_SPEC
|
||||
#undef AUX_APPLY_N_PLACEHOLDERS
|
||||
#undef AUX_APPLY_N_PARAMS
|
||||
#undef AUX_APPLY_DEFAULT_PARAMS
|
||||
#undef AUX_APPLY_PARAMS
|
||||
|
||||
} // namespace mpl
|
||||
} // namespace boost
|
||||
|
||||
#endif // #if defined(BOOST_MPL_USE_PREPROCESSED_HEADERS)
|
||||
|
||||
#endif // BOOST_MPL_APPLY_HPP_INCLUDED
|
||||
Reference in New Issue
Block a user