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Fix #10443: SFINAE-friendly result_of::invoke.

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It means previous pull-requests (#24) is still incomplete.
This commit is contained in:
Kohei Takahashi
2015-02-12 21:21:01 +09:00
parent c5c0147d7d
commit bd4b1cdac6
7 changed files with 171 additions and 107 deletions
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48
include/boost/fusion/functional/invocation/invoke_procedure.hpp
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@ -28,6 +28,7 @@
#include <boost/function_types/parameter_types.hpp>
#include <boost/fusion/support/category_of.hpp>
#include <boost/fusion/support/detail/enabler.hpp>
#include <boost/fusion/sequence/intrinsic/at.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>
#include <boost/fusion/sequence/intrinsic/begin.hpp>
@ -38,24 +39,6 @@
namespace boost { namespace fusion
{
namespace result_of
{
template <typename Function, class Sequence> struct invoke_procedure
{
typedef void type;
};
}
template <typename Function, class Sequence>
BOOST_FUSION_GPU_ENABLED
inline void invoke_procedure(Function, Sequence &);
template <typename Function, class Sequence>
BOOST_FUSION_GPU_ENABLED
inline void invoke_procedure(Function, Sequence const &);
//----- ---- --- -- - - - -
namespace detail
{
namespace ft = function_types;
@ -76,9 +59,27 @@ namespace boost { namespace fusion
}
namespace result_of
{
template <typename Function, class Sequence, class Enable = void>
struct invoke_procedure;
template <typename Function, class Sequence>
struct invoke_procedure<Function, Sequence,
typename detail::enabler<
typename detail::invoke_procedure_impl<
typename boost::remove_reference<Function>::type,Sequence
>::result_type
>::type>
{
typedef void type;
};
}
template <typename Function, class Sequence>
BOOST_FUSION_GPU_ENABLED
inline void invoke_procedure(Function f, Sequence & s)
inline typename result_of::invoke_procedure<Function, Sequence>::type
invoke_procedure(Function f, Sequence & s)
{
detail::invoke_procedure_impl<
typename boost::remove_reference<Function>::type,Sequence
@ -87,7 +88,8 @@ namespace boost { namespace fusion
template <typename Function, class Sequence>
BOOST_FUSION_GPU_ENABLED
inline void invoke_procedure(Function f, Sequence const & s)
inline typename result_of::invoke_procedure<Function, Sequence const>::type
invoke_procedure(Function f, Sequence const & s)
{
detail::invoke_procedure_impl<
typename boost::remove_reference<Function>::type,Sequence const
@ -110,6 +112,7 @@ namespace boost { namespace fusion
template <typename Function, class Sequence>
struct invoke_procedure_impl<Function,Sequence,N,false,true>
{
typedef void result_type;
#if N > 0
@ -135,6 +138,8 @@ namespace boost { namespace fusion
template <typename Function, class Sequence>
struct invoke_procedure_impl<Function,Sequence,N,true,true>
{
typedef void result_type;
BOOST_FUSION_GPU_ENABLED
static inline void call(Function & f, Sequence & s)
{
@ -155,6 +160,7 @@ namespace boost { namespace fusion
template <typename Function, class Sequence>
struct invoke_procedure_impl<Function,Sequence,N,false,false>
{
typedef void result_type;
#if N > 0
@ -182,6 +188,8 @@ namespace boost { namespace fusion
template <typename Function, class Sequence>
struct invoke_procedure_impl<Function,Sequence,N,true,false>
{
typedef void result_type;
BOOST_FUSION_GPU_ENABLED
static inline void call(Function & f, Sequence & s)
{