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Clean up bind_first implementation

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This commit is contained in:
Jason Turner 2014-09-10 07:40:16 -06:00
parent fde90ad980
commit 3bd2a9c00d
1 changed files with 3 additions and 68 deletions
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71
include/chaiscript/dispatchkit/bind_first.hpp
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@ -13,80 +13,15 @@ namespace chaiscript
{ {
namespace detail namespace detail
{ {
template<int>
struct Placeholder
{
};
template<>
struct Placeholder<1>
{
static decltype(std::placeholders::_1) value() { return std::placeholders::_1; }
};
template<>
struct Placeholder<2>
{
static decltype(std::placeholders::_2) value() { return std::placeholders::_2; }
};
template<>
struct Placeholder<3>
{
static decltype(std::placeholders::_3) value() { return std::placeholders::_3; }
};
template<>
struct Placeholder<4>
{
static decltype(std::placeholders::_4) value() { return std::placeholders::_4; }
};
template<>
struct Placeholder<5>
{
static decltype(std::placeholders::_5) value() { return std::placeholders::_5; }
};
template<>
struct Placeholder<6>
{
static decltype(std::placeholders::_6) value() { return std::placeholders::_6; }
};
template<>
struct Placeholder<7>
{
static decltype(std::placeholders::_7) value() { return std::placeholders::_7; }
};
template<>
struct Placeholder<8>
{
static decltype(std::placeholders::_8) value() { return std::placeholders::_8; }
};
template<>
struct Placeholder<9>
{
static decltype(std::placeholders::_9) value() { return std::placeholders::_9; }
};
template<>
struct Placeholder<10>
{
static decltype(std::placeholders::_10) value() { return std::placeholders::_10; }
};
template<int count, int maxcount, typename Sig> template<int count, int maxcount, typename Sig>
struct Bind_First struct Bind_First
{ {
template<typename F, typename ... InnerParams> template<typename F, typename ... InnerParams>
static std::function<Sig> bind(F f, InnerParams ... innerparams) static std::function<Sig> bind(F f, InnerParams ... innerparams)
{ {
return Bind_First<count - 1, maxcount, Sig>::bind(f, innerparams..., Placeholder<maxcount - count + 1>::value()); static auto placeholder = std::make_tuple(std::placeholders::_1,std::placeholders::_2,std::placeholders::_3,std::placeholders::_4,std::placeholders::_5,std::placeholders::_6,std::placeholders::_7,std::placeholders::_8,std::placeholders::_9,std::placeholders::_10);
return Bind_First<count - 1, maxcount, Sig>::bind(f, innerparams..., std::get<maxcount - count>(placeholder));
} }
}; };