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Add mp_bind.

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This commit is contained in:
Peter Dimov
2017-04-01 18:42:11 +03:00
parent c92d314009
commit b02e9fbacc
4 changed files with 174 additions and 0 deletions
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1
include/boost/mp11.hpp
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@@ -15,5 +15,6 @@
#include <boost/mp11/function.hpp>
#include <boost/mp11/map.hpp>
#include <boost/mp11/set.hpp>
#include <boost/mp11/bind.hpp>
#endif // #ifndef BOOST_MP11_HPP_INCLUDED

64
include/boost/mp11/bind.hpp Normal file
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@@ -0,0 +1,64 @@
#ifndef BOOST_MP11_BIND_HPP_INCLUDED
#define BOOST_MP11_BIND_HPP_INCLUDED
// Copyright 2017 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/algorithm.hpp>
#include <cstddef>
namespace boost
{
namespace mp11
{
template<std::size_t I> struct mp_arg
{
template<class... T> using fn = mp_at_c<mp_list<T...>, I>;
};
using _1 = mp_arg<0>;
using _2 = mp_arg<1>;
using _3 = mp_arg<2>;
using _4 = mp_arg<3>;
using _5 = mp_arg<4>;
using _6 = mp_arg<5>;
using _7 = mp_arg<6>;
using _8 = mp_arg<7>;
using _9 = mp_arg<8>;
template<template<class...> class F, class... T> struct mp_bind;
namespace detail
{
template<class V, class... T> struct eval_bound_arg
{
using type = V;
};
template<std::size_t I, class... T> struct eval_bound_arg<mp_arg<I>, T...>
{
using type = typename mp_arg<I>::template fn<T...>;
};
template<template<class...> class F, class... U, class... T> struct eval_bound_arg<mp_bind<F, U...>, T...>
{
using type = typename mp_bind<F, U...>::template fn<T...>;
};
} // namespace detail
template<template<class...> class F, class... T> struct mp_bind
{
template<class... U> using fn = F<typename detail::eval_bound_arg<T, U...>::type...>;
};
} // namespace mp11
} // namespace boost
#endif // #ifndef BOOST_MP11_BIND_HPP_INCLUDED

3
test/Jamfile.v2
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@@ -102,3 +102,6 @@ run mp_map_insert.cpp : : : $(REQ) ;
run mp_map_replace.cpp : : : $(REQ) ;
run mp_map_erase.cpp : : : $(REQ) ;
run mp_map_update.cpp : : : $(REQ) ;
# bind
run mp_bind.cpp : : : $(REQ) ;

106
test/mp_bind.cpp Normal file
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@@ -0,0 +1,106 @@
// Copyright 2017 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/bind.hpp>
#include <boost/mp11/list.hpp>
#include <boost/mp11/algorithm.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <type_traits>
#include <tuple>
#include <utility>
struct X1 {};
struct X2 {};
struct X3 {};
struct X4 {};
struct X5 {};
struct X6 {};
struct X7 {};
struct X8 {};
struct X9 {};
template<class T> using add_pointer = typename std::add_pointer<T>::type;
int main()
{
using namespace boost::mp11;
BOOST_TEST_TRAIT_TRUE((std::is_same<_1::fn<X1>, X1>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_1::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X1>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_2::fn<X1, X2>, X2>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_2::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X2>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_3::fn<X1, X2, X3>, X3>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_3::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X3>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_4::fn<X1, X2, X3, X4>, X4>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_4::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X4>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_5::fn<X1, X2, X3, X4, X5>, X5>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_5::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X5>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_6::fn<X1, X2, X3, X4, X5, X6>, X6>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_6::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X6>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_7::fn<X1, X2, X3, X4, X5, X6, X7>, X7>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_7::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X7>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_8::fn<X1, X2, X3, X4, X5, X6, X7, X8>, X8>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_8::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X8>));
BOOST_TEST_TRAIT_TRUE((std::is_same<_9::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X9>));
//
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _1>::fn<X1>, X1*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _1>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X1*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _2>::fn<X1, X2>, X2*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _2>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X2*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _3>::fn<X1, X2, X3>, X3*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _3>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X3*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _4>::fn<X1, X2, X3, X4>, X4*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _4>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X4*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _5>::fn<X1, X2, X3, X4, X5>, X5*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _5>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X5*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _6>::fn<X1, X2, X3, X4, X5, X6>, X6*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _6>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X6*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _7>::fn<X1, X2, X3, X4, X5, X6, X7>, X7*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _7>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X7*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _8>::fn<X1, X2, X3, X4, X5, X6, X7, X8>, X8*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _8>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X8*>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_bind<add_pointer, _9>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, X9*>));
//
BOOST_TEST_TRAIT_TRUE((std::is_same<
mp_bind<std::tuple,
mp_bind<add_pointer, _9>,
mp_bind<add_pointer, _8>,
mp_bind<add_pointer, _7>,
mp_bind<add_pointer, _6>,
mp_bind<add_pointer, _5>,
mp_bind<add_pointer, _4>,
mp_bind<add_pointer, _3>,
mp_bind<add_pointer, _2>,
mp_bind<add_pointer, _1>
>::fn<X1, X2, X3, X4, X5, X6, X7, X8, X9>, std::tuple<X9*, X8*, X7*, X6*, X5*, X4*, X3*, X2*, X1*>>));
//
return boost::report_errors();
}