130 lines
3.5 KiB
C++
130 lines
3.5 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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// <vector>
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// reference operator[](size_type __i);
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// const_reference operator[](size_type __i) const;
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//
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// reference at(size_type __i);
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// const_reference at(size_type __i) const;
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//
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// reference front();
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// const_reference front() const;
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//
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// reference back();
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// const_reference back() const;
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// libc++ marks these as 'noexcept' (except 'at')
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#include <vector>
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#include <cassert>
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#include <stdexcept>
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#include "min_allocator.h"
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#include "test_macros.h"
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template <class C>
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TEST_CONSTEXPR_CXX20 C make(int size, int start) {
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C c;
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for (int i = 0; i < size; ++i)
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c.push_back(start + i);
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return c;
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}
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template <class Vector>
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TEST_CONSTEXPR_CXX20 void test_get_basic(Vector& c, int start_value) {
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const int n = static_cast<int>(c.size());
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for (int i = 0; i < n; ++i)
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assert(c[i] == start_value + i);
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for (int i = 0; i < n; ++i)
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assert(c.at(i) == start_value + i);
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#ifndef TEST_HAS_NO_EXCEPTIONS
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if (!TEST_IS_CONSTANT_EVALUATED) {
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try {
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TEST_IGNORE_NODISCARD c.at(n);
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assert(false);
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} catch (const std::out_of_range&) {}
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}
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#endif
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assert(c.front() == start_value);
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assert(c.back() == start_value + n - 1);
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}
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template <class Vector>
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TEST_CONSTEXPR_CXX20 void test_get() {
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int start_value = 35;
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Vector c = make<Vector>(10, start_value);
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const Vector& cc = c;
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test_get_basic(c, start_value);
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test_get_basic(cc, start_value);
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}
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template <class Vector>
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TEST_CONSTEXPR_CXX20 void test_set() {
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int start_value = 35;
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const int n = 10;
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Vector c = make<Vector>(n, start_value);
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for (int i = 0; i < n; ++i) {
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assert(c[i] == start_value + i);
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c[i] = start_value + i + 1;
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assert(c[i] == start_value + i + 1);
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}
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for (int i = 0; i < n; ++i) {
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assert(c.at(i) == start_value + i + 1);
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c.at(i) = start_value + i + 2;
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assert(c.at(i) == start_value + i + 2);
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}
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assert(c.front() == start_value + 2);
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c.front() = start_value + 3;
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assert(c.front() == start_value + 3);
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assert(c.back() == start_value + n + 1);
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c.back() = start_value + n + 2;
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assert(c.back() == start_value + n + 2);
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}
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template <class Vector>
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TEST_CONSTEXPR_CXX20 void test() {
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test_get<Vector>();
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test_set<Vector>();
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Vector c;
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const Vector& cc = c;
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ASSERT_SAME_TYPE(typename Vector::reference, decltype(c[0]));
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ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc[0]));
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ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.at(0)));
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ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.at(0)));
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ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.front()));
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ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.front()));
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ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.back()));
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ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.back()));
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}
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TEST_CONSTEXPR_CXX20 bool tests() {
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test<std::vector<int> >();
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#if TEST_STD_VER >= 11
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test<std::vector<int, min_allocator<int> > >();
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#endif
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return true;
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}
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int main(int, char**) {
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tests();
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#if TEST_STD_VER > 17
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static_assert(tests());
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#endif
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return 0;
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}
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