f4c1258d56
Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
90 lines
2.2 KiB
C++
90 lines
2.2 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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// <sstream>
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// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
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// class basic_istringstream
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// basic_istringstream& operator=(basic_istringstream&& rhs);
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#include <sstream>
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#include <cassert>
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#include "test_macros.h"
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int main(int, char**)
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{
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{
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std::istringstream ss0(" 123 456");
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std::istringstream ss;
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ss = std::move(ss0);
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assert(ss.rdbuf() != 0);
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assert(ss.good());
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assert(ss.str() == " 123 456");
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int i = 0;
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ss >> i;
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assert(i == 123);
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ss >> i;
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assert(i == 456);
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}
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{
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std::istringstream s1("Aaaaa Bbbbb Cccccccccc Dddddddddddddddddd");
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std::string s;
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s1 >> s;
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std::istringstream s2 = std::move(s1);
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s2 >> s;
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assert(s == "Bbbbb");
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std::istringstream s3;
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s3 = std::move(s2);
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s3 >> s;
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assert(s == "Cccccccccc");
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s1 = std::move(s3);
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s1 >> s;
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assert(s == "Dddddddddddddddddd");
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}
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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std::wistringstream ss0(L" 123 456");
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std::wistringstream ss;
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ss = std::move(ss0);
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assert(ss.rdbuf() != 0);
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assert(ss.good());
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assert(ss.str() == L" 123 456");
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int i = 0;
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ss >> i;
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assert(i == 123);
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ss >> i;
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assert(i == 456);
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}
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{
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std::wistringstream s1(L"Aaaaa Bbbbb Cccccccccc Dddddddddddddddddd");
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std::wstring s;
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s1 >> s;
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std::wistringstream s2 = std::move(s1);
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s2 >> s;
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assert(s == L"Bbbbb");
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std::wistringstream s3;
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s3 = std::move(s2);
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s3 >> s;
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assert(s == L"Cccccccccc");
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s1 = std::move(s3);
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s1 >> s;
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assert(s == L"Dddddddddddddddddd");
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}
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#endif // TEST_HAS_NO_WIDE_CHARACTERS
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return 0;
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}
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