forked from mirrors/gecko-dev
e0d88600e7
The STL supports it only with C++20. Differential Revision: https://phabricator.services.mozilla.com/D97123
68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Algorithm.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Assertions.h"
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#include <iterator>
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static constexpr bool even(int32_t n) { return !(n & 1); }
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static constexpr bool odd(int32_t n) { return (n & 1); }
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using namespace mozilla;
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void TestAllOf() {
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using std::begin;
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using std::end;
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constexpr static int32_t arr1[3] = {1, 2, 3};
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MOZ_RELEASE_ASSERT(!AllOf(begin(arr1), end(arr1), even));
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MOZ_RELEASE_ASSERT(!AllOf(begin(arr1), end(arr1), odd));
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static_assert(!AllOf(arr1, arr1 + ArrayLength(arr1), even), "1-1");
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static_assert(!AllOf(arr1, arr1 + ArrayLength(arr1), odd), "1-2");
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constexpr static int32_t arr2[3] = {1, 3, 5};
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MOZ_RELEASE_ASSERT(!AllOf(begin(arr2), end(arr2), even));
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MOZ_RELEASE_ASSERT(AllOf(begin(arr2), end(arr2), odd));
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static_assert(!AllOf(arr2, arr2 + ArrayLength(arr2), even), "2-1");
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static_assert(AllOf(arr2, arr2 + ArrayLength(arr2), odd), "2-2");
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constexpr static int32_t arr3[3] = {2, 4, 6};
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MOZ_RELEASE_ASSERT(AllOf(begin(arr3), end(arr3), even));
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MOZ_RELEASE_ASSERT(!AllOf(begin(arr3), end(arr3), odd));
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static_assert(AllOf(arr3, arr3 + ArrayLength(arr3), even), "3-1");
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static_assert(!AllOf(arr3, arr3 + ArrayLength(arr3), odd), "3-2");
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}
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void TestAnyOf() {
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using std::begin;
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using std::end;
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// The Android NDK's STL doesn't support `constexpr` `std::array::begin`, see
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// bug 1677484. Hence using a raw array here.
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constexpr int32_t arr1[1] = {0};
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static_assert(!AnyOf(arr1, arr1, even));
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static_assert(!AnyOf(arr1, arr1, odd));
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constexpr int32_t arr2[] = {1};
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static_assert(!AnyOf(begin(arr2), end(arr2), even));
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static_assert(AnyOf(begin(arr2), end(arr2), odd));
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constexpr int32_t arr3[] = {2};
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static_assert(AnyOf(begin(arr3), end(arr3), even));
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static_assert(!AnyOf(begin(arr3), end(arr3), odd));
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constexpr int32_t arr4[] = {1, 2};
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static_assert(AnyOf(begin(arr4), end(arr4), even));
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static_assert(AnyOf(begin(arr4), end(arr4), odd));
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}
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int main() {
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TestAllOf();
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TestAnyOf();
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return 0;
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}
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