99 lines
2.8 KiB
C++
99 lines
2.8 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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// test bitset(string, pos, n, zero, one);
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#include <bitset>
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#include <algorithm> // for 'min' and 'max'
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#include <cassert>
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#include <stdexcept> // for 'invalid_argument'
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#include <string>
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#include "test_macros.h"
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template <std::size_t N>
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void test_string_ctor() {
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#ifndef TEST_HAS_NO_EXCEPTIONS
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{
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try {
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std::string s("xxx1010101010xxxx");
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std::bitset<N> v(s, s.size()+1, 10);
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assert(false);
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}
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catch (std::out_of_range&)
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{
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}
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}
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{
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try {
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std::string s("xxx1010101010xxxx");
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std::bitset<N> v(s, 2, 10);
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assert(false);
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}
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catch (std::invalid_argument&)
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{
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}
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}
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{
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try {
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std::string s("xxxbababababaxxxx");
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std::bitset<N> v(s, 2, 10, 'a', 'b');
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assert(false);
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}
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catch (std::invalid_argument&)
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{
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}
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}
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#endif // TEST_HAS_NO_EXCEPTIONS
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{
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std::string s("xxx1010101010xxxx");
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std::bitset<N> v(s, 3, 10);
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std::size_t M = std::min<std::size_t>(v.size(), 10);
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for (std::size_t i = 0; i < M; ++i)
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assert(v[i] == (s[3 + M - 1 - i] == '1'));
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for (std::size_t i = 10; i < v.size(); ++i)
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assert(v[i] == false);
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}
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{
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std::string s("xxxbababababaxxxx");
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std::bitset<N> v(s, 3, 10, 'a', 'b');
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std::size_t M = std::min<std::size_t>(v.size(), 10);
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for (std::size_t i = 0; i < M; ++i)
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assert(v[i] == (s[3 + M - 1 - i] == 'b'));
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for (std::size_t i = 10; i < v.size(); ++i)
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assert(v[i] == false);
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}
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}
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struct Nonsense {
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virtual ~Nonsense() {}
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};
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void test_for_non_eager_instantiation() {
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// Ensure we don't accidentally instantiate `std::basic_string<Nonsense>`
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// since it may not be well formed and can cause an error in the
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// non-immediate context.
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static_assert(!std::is_constructible<std::bitset<3>, Nonsense*>::value, "");
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static_assert(!std::is_constructible<std::bitset<3>, Nonsense*, size_t, Nonsense&, Nonsense&>::value, "");
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}
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int main(int, char**) {
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test_string_ctor<0>();
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test_string_ctor<1>();
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test_string_ctor<31>();
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test_string_ctor<32>();
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test_string_ctor<33>();
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test_string_ctor<63>();
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test_string_ctor<64>();
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test_string_ctor<65>();
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test_string_ctor<1000>();
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test_for_non_eager_instantiation();
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return 0;
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}
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