def50f701f
fixes https://github.com/llvm/llvm-project/issues/105190 --------- Co-authored-by: Hui Xie <huixie@Mac.broadband> Co-authored-by: Hui Xie <huixie@Huis-MacBook-Pro.local>
94 lines
3.7 KiB
C++
94 lines
3.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// <flat_map>
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// explicit flat_multimap(const key_compare& comp);
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// template <class Alloc>
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// flat_multimap(const key_compare& comp, const Alloc& a);
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#include <deque>
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#include <flat_map>
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#include <functional>
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#include <type_traits>
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#include <vector>
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#include "test_macros.h"
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#include "../../../test_compare.h"
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#include "test_allocator.h"
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int main(int, char**) {
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{
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// The constructors in this subclause shall not participate in overload
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// resolution unless uses_allocator_v<key_container_type, Alloc> is true
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// and uses_allocator_v<mapped_container_type, Alloc> is true.
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using C = test_less<int>;
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using A1 = test_allocator<int>;
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using A2 = other_allocator<int>;
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using M1 = std::flat_multimap<int, int, C, std::vector<int, A1>, std::vector<int, A1>>;
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using M2 = std::flat_multimap<int, int, C, std::vector<int, A1>, std::vector<int, A2>>;
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using M3 = std::flat_multimap<int, int, C, std::vector<int, A2>, std::vector<int, A1>>;
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static_assert(std::is_constructible_v<M1, const C&, const A1&>);
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static_assert(!std::is_constructible_v<M1, const C&, const A2&>);
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static_assert(!std::is_constructible_v<M2, const C&, const A2&>);
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static_assert(!std::is_constructible_v<M3, const C&, const A2&>);
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}
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{
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using C = test_less<int>;
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auto m = std::flat_multimap<int, char*, C>(C(3));
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assert(m.empty());
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assert(m.begin() == m.end());
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assert(m.key_comp() == C(3));
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}
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{
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// The one-argument ctor is explicit.
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using C = test_less<int>;
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static_assert(std::is_constructible_v<std::flat_multimap<int, char*, C>, C>);
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static_assert(!std::is_convertible_v<C, std::flat_multimap<int, char*, C>>);
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static_assert(std::is_constructible_v<std::flat_multimap<int, char*>, std::less<int>>);
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static_assert(!std::is_convertible_v<std::less<int>, std::flat_multimap<int, char*>>);
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}
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{
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using C = test_less<int>;
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using A1 = test_allocator<int>;
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using A2 = test_allocator<short>;
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auto m = std::flat_multimap<int, short, C, std::vector<int, A1>, std::vector<short, A2>>(C(4), A1(5));
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assert(m.empty());
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assert(m.begin() == m.end());
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assert(m.key_comp() == C(4));
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assert(m.keys().get_allocator() == A1(5));
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assert(m.values().get_allocator() == A2(5));
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}
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{
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// explicit(false)
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using C = test_less<int>;
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using A1 = test_allocator<int>;
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using A2 = test_allocator<short>;
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std::flat_multimap<int, short, C, std::deque<int, A1>, std::deque<short, A2>> m = {C(4), A1(5)};
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assert(m.empty());
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assert(m.begin() == m.end());
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assert(m.key_comp() == C(4));
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assert(m.keys().get_allocator() == A1(5));
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assert(m.values().get_allocator() == A2(5));
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}
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{
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// If an allocator is given, it must be usable by both containers.
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using A = test_allocator<int>;
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using M = std::flat_multimap<int, int, std::less<>, std::vector<int>, std::vector<int, A>>;
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static_assert(std::is_constructible_v<M, std::less<>>);
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static_assert(!std::is_constructible_v<M, std::less<>, std::allocator<int>>);
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static_assert(!std::is_constructible_v<M, std::less<>, A>);
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}
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return 0;
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}
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