95 lines
3.9 KiB
C++
95 lines
3.9 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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// <string>
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// UNSUPPORTED: c++03, c++11, c++14
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// XFAIL: libcpp-no-deduction-guides
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// template<class InputIterator>
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// basic_string(InputIterator begin, InputIterator end,
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// const Allocator& a = Allocator());
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// template<class InputIterator,
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// class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
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// basic_string(InputIterator, InputIterator, Allocator = Allocator())
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// -> basic_string<typename iterator_traits<InputIterator>::value_type,
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// char_traits<typename iterator_traits<InputIterator>::value_type>,
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// Allocator>;
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//
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// The deduction guide shall not participate in overload resolution if InputIterator
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// is a type that does not qualify as an input iterator, or if Allocator is a type
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// that does not qualify as an allocator.
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#include <string>
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#include <iterator>
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#include <cassert>
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#include <cstddef>
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#include "test_macros.h"
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#include "test_allocator.h"
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#include "../cpp17_input_iterator.h"
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#include "min_allocator.h"
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int main(int, char**)
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{
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{
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const char* s = "12345678901234";
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std::basic_string s1(s, s+10); // Can't use {} here
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using S = decltype(s1); // what type did we get?
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static_assert(std::is_same_v<S::value_type, char>, "");
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static_assert(std::is_same_v<S::traits_type, std::char_traits<char>>, "");
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static_assert(std::is_same_v<S::allocator_type, std::allocator<char>>, "");
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assert(s1.size() == 10);
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assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
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}
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{
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const char* s = "12345678901234";
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std::basic_string s1{s, s+10, std::allocator<char>{}};
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using S = decltype(s1); // what type did we get?
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static_assert(std::is_same_v<S::value_type, char>, "");
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static_assert(std::is_same_v<S::traits_type, std::char_traits<char>>, "");
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static_assert(std::is_same_v<S::allocator_type, std::allocator<char>>, "");
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assert(s1.size() == 10);
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assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
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}
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{
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const wchar_t* s = L"12345678901234";
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std::basic_string s1{s, s+10, test_allocator<wchar_t>{}};
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using S = decltype(s1); // what type did we get?
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static_assert(std::is_same_v<S::value_type, wchar_t>, "");
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static_assert(std::is_same_v<S::traits_type, std::char_traits<wchar_t>>, "");
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static_assert(std::is_same_v<S::allocator_type, test_allocator<wchar_t>>, "");
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assert(s1.size() == 10);
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assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
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}
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{
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const char16_t* s = u"12345678901234";
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std::basic_string s1{s, s+10, min_allocator<char16_t>{}};
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using S = decltype(s1); // what type did we get?
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static_assert(std::is_same_v<S::value_type, char16_t>, "");
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static_assert(std::is_same_v<S::traits_type, std::char_traits<char16_t>>, "");
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static_assert(std::is_same_v<S::allocator_type, min_allocator<char16_t>>, "");
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assert(s1.size() == 10);
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assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
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}
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{
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const char32_t* s = U"12345678901234";
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std::basic_string s1{s, s+10, explicit_allocator<char32_t>{}};
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using S = decltype(s1); // what type did we get?
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static_assert(std::is_same_v<S::value_type, char32_t>, "");
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static_assert(std::is_same_v<S::traits_type, std::char_traits<char32_t>>, "");
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static_assert(std::is_same_v<S::allocator_type, explicit_allocator<char32_t>>, "");
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assert(s1.size() == 10);
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assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
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}
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return 0;
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}
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