57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
135 lines
2.4 KiB
C++
135 lines
2.4 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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// Split into two calls for C++20
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// void reserve();
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// void reserve(size_type res_arg);
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#include <string>
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#include <stdexcept>
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#include <cassert>
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#include "test_macros.h"
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#include "min_allocator.h"
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template <class S>
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void
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test(S s)
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{
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typename S::size_type old_cap = s.capacity();
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S s0 = s;
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s.reserve();
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LIBCPP_ASSERT(s.__invariants());
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assert(s == s0);
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assert(s.capacity() <= old_cap);
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assert(s.capacity() >= s.size());
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}
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template <class S>
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void
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test(S s, typename S::size_type res_arg)
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{
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typename S::size_type old_cap = s.capacity();
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((void)old_cap); // Prevent unused warning
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S s0 = s;
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if (res_arg <= s.max_size())
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{
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s.reserve(res_arg);
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assert(s == s0);
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assert(s.capacity() >= res_arg);
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assert(s.capacity() >= s.size());
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#if TEST_STD_VER > 17
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assert(s.capacity() >= old_cap); // resize never shrinks as of P0966
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#endif
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}
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#ifndef TEST_HAS_NO_EXCEPTIONS
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else
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{
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try
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{
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s.reserve(res_arg);
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assert(false);
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}
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catch (std::length_error&)
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{
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assert(res_arg > s.max_size());
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}
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}
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#endif
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}
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int main()
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{
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{
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typedef std::string S;
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{
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S s;
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test(s);
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s.assign(10, 'a');
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s.erase(5);
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test(s);
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s.assign(100, 'a');
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s.erase(50);
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test(s);
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}
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{
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S s;
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test(s, 5);
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test(s, 10);
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test(s, 50);
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}
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{
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S s(100, 'a');
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s.erase(50);
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test(s, 5);
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test(s, 10);
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test(s, 50);
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test(s, 100);
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test(s, 1000);
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test(s, S::npos);
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}
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}
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#if TEST_STD_VER >= 11
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{
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typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
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{
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S s;
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test(s);
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s.assign(10, 'a');
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s.erase(5);
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test(s);
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s.assign(100, 'a');
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s.erase(50);
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test(s);
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}
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{
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S s;
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test(s, 5);
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test(s, 10);
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test(s, 50);
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}
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{
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S s(100, 'a');
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s.erase(50);
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test(s, 5);
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test(s, 10);
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test(s, 50);
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test(s, 100);
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test(s, 1000);
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test(s, S::npos);
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}
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}
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#endif
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}
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