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- /*=============================================================================
- Copyright (c) 2017 Paul Fultz II
- construct.cpp
- 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/hof/construct.hpp>
- #include "test.hpp"
- #include <boost/hof/first_of.hpp>
- #include <boost/hof/proj.hpp>
- #include <boost/hof/placeholders.hpp>
- #include <tuple>
- #include <type_traits>
- #include <vector>
- template<class T>
- struct ac
- {
- T value;
- constexpr ac(T i) : value(i)
- {}
- };
- template<class... Ts>
- struct tuple_meta
- {
- typedef std::tuple<Ts...> type;
- };
- struct tuple_meta_class
- {
- template<class... Ts>
- struct apply
- {
- typedef std::tuple<Ts...> type;
- };
- };
- struct implicit_default
- {
- int mem1;
- std::string mem2;
- };
-
- struct user_default
- {
- int mem1;
- std::string mem2;
- user_default() { }
- };
- struct user_construct
- {
- int mem1;
- std::string mem2;
- user_construct(int) { }
- };
- template<class T>
- struct template_user_construct
- {
- int mem1;
- std::string mem2;
- template_user_construct(T) { }
- };
- BOOST_HOF_TEST_CASE()
- {
- auto v = boost::hof::construct<std::vector<int>>()(5, 5);
- BOOST_HOF_TEST_CHECK(v.size() == 5);
- BOOST_HOF_TEST_CHECK(v == std::vector<int>{5, 5, 5, 5, 5});
- }
- BOOST_HOF_TEST_CASE()
- {
- auto v = boost::hof::construct_basic<std::vector<int>>()(5, 5);
- BOOST_HOF_TEST_CHECK(v.size() == 5);
- BOOST_HOF_TEST_CHECK(v == std::vector<int>{5, 5, 5, 5, 5});
- }
- BOOST_HOF_TEST_CASE()
- {
- auto v = boost::hof::construct_forward<std::vector<int>>()(5, 5);
- BOOST_HOF_TEST_CHECK(v.size() == 5);
- BOOST_HOF_TEST_CHECK(v == std::vector<int>{5, 5, 5, 5, 5});
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct<implicit_default>()();
- BOOST_HOF_TEST_CHECK(x.mem1 == 0);
- BOOST_HOF_TEST_CHECK(x.mem2 == "");
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct<user_default>()();
- BOOST_HOF_TEST_CHECK(x.mem1 == 0);
- BOOST_HOF_TEST_CHECK(x.mem2 == "");
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct<user_construct>()(3);
- BOOST_HOF_TEST_CHECK(x.mem1 == 0);
- BOOST_HOF_TEST_CHECK(x.mem2 == "");
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct<template_user_construct>()(3);
- BOOST_HOF_TEST_CHECK(x.mem1 == 0);
- BOOST_HOF_TEST_CHECK(x.mem2 == "");
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct_forward<template_user_construct>()(3);
- BOOST_HOF_TEST_CHECK(x.mem1 == 0);
- BOOST_HOF_TEST_CHECK(x.mem2 == "");
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct_basic<template_user_construct>()(3);
- BOOST_HOF_TEST_CHECK(x.mem1 == 0);
- BOOST_HOF_TEST_CHECK(x.mem2 == "");
- }
- BOOST_HOF_TEST_CASE()
- {
- auto v = boost::hof::construct<std::vector<int>>()({5, 5, 5, 5, 5});
- BOOST_HOF_TEST_CHECK(v.size() == 5);
- BOOST_HOF_TEST_CHECK(v == std::vector<int>{5, 5, 5, 5, 5});
- }
- BOOST_HOF_TEST_CASE()
- {
- auto t = boost::hof::construct<std::tuple>()(1, 2, 3);
- static_assert(std::is_same<std::tuple<int, int, int>, decltype(t)>::value, "");
- BOOST_HOF_TEST_CHECK(t == std::make_tuple(1, 2, 3));
- // GCC 4.7 doesn't have fully constexpr tuple
- #if BOOST_HOF_HAS_CONSTEXPR_TUPLE
- BOOST_HOF_STATIC_TEST_CHECK(std::make_tuple(1, 2, 3) == boost::hof::construct<std::tuple>()(1, 2, 3));
- #endif
- }
- BOOST_HOF_TEST_CASE()
- {
- auto t = boost::hof::construct<std::pair>()(1, 2);
- static_assert(std::is_same<std::pair<int, int>, decltype(t)>::value, "");
- BOOST_HOF_TEST_CHECK(t == std::make_pair(1, 2));
- // GCC 4.7 doesn't have fully constexpr pair
- #if BOOST_HOF_HAS_CONSTEXPR_TUPLE
- BOOST_HOF_STATIC_TEST_CHECK(std::make_pair(1, 2) == boost::hof::construct<std::pair>()(1, 2));
- #endif
- }
- BOOST_HOF_TEST_CASE()
- {
- auto f = boost::hof::first_of(boost::hof::construct<std::pair>(), boost::hof::identity);
- BOOST_HOF_TEST_CHECK(f(1, 2) == std::make_pair(1, 2));
- BOOST_HOF_TEST_CHECK(f(1) == 1);
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct<ac>()(1);
- static_assert(std::is_same<ac<int>, decltype(x)>::value, "");
- BOOST_HOF_TEST_CHECK(x.value == ac<int>(1).value);
- BOOST_HOF_STATIC_TEST_CHECK(ac<int>(1).value == boost::hof::construct<ac>()(1).value);
- }
- BOOST_HOF_TEST_CASE()
- {
- auto x = boost::hof::construct_basic<ac>()(1);
- static_assert(std::is_same<ac<int>, decltype(x)>::value, "");
- BOOST_HOF_TEST_CHECK(x.value == ac<int>(1).value);
- BOOST_HOF_STATIC_TEST_CHECK(ac<int>(1).value == boost::hof::construct<ac>()(1).value);
- }
- BOOST_HOF_TEST_CASE()
- {
- int i = 1;
- auto x = boost::hof::construct_forward<ac>()(i);
- static_assert(std::is_same<ac<int&>, decltype(x)>::value, "");
- BOOST_HOF_TEST_CHECK(&x.value == &i);
- }
- BOOST_HOF_TEST_CASE()
- {
- int i = 1;
- auto x = boost::hof::construct_basic<ac>()(i);
- static_assert(std::is_same<ac<int&>, decltype(x)>::value, "");
- BOOST_HOF_TEST_CHECK(&x.value == &i);
- }
- BOOST_HOF_TEST_CASE()
- {
- auto t = boost::hof::construct_meta<tuple_meta>()(1, 2, 3);
- static_assert(std::is_same<std::tuple<int, int, int>, decltype(t)>::value, "");
- BOOST_HOF_TEST_CHECK(t == std::make_tuple(1, 2, 3));
- // GCC 4.7 doesn't have fully constexpr tuple
- #if BOOST_HOF_HAS_CONSTEXPR_TUPLE
- BOOST_HOF_STATIC_TEST_CHECK(std::make_tuple(1, 2, 3) == boost::hof::construct_meta<tuple_meta>()(1, 2, 3));
- #endif
- }
- BOOST_HOF_TEST_CASE()
- {
- auto t = boost::hof::construct_meta<tuple_meta_class>()(1, 2, 3);
- static_assert(std::is_same<std::tuple<int, int, int>, decltype(t)>::value, "");
- BOOST_HOF_TEST_CHECK(t == std::make_tuple(1, 2, 3));
- // GCC 4.7 doesn't have fully constexpr tuple
- #if BOOST_HOF_HAS_CONSTEXPR_TUPLE
- BOOST_HOF_STATIC_TEST_CHECK(std::make_tuple(1, 2, 3) == boost::hof::construct_meta<tuple_meta_class>()(1, 2, 3));
- #endif
- }
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