| 1 | // Copyright (C) 2025 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QMULTIMEDIA_RANGES_P_H |
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| 5 | #define QMULTIMEDIA_RANGES_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <QtCore/qtconfigmacros.h> |
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| 19 | |
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| 20 | #ifdef __cpp_lib_ranges |
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| 21 | # include <ranges> // IWYU pragma: export |
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| 22 | #endif |
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| 23 | |
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| 24 | #include <algorithm> |
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| 25 | |
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| 26 | QT_BEGIN_NAMESPACE |
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| 27 | |
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| 28 | namespace QtMultimediaPrivate::ranges { |
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| 29 | |
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| 30 | #ifdef __cpp_lib_ranges |
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| 31 | using std::ranges::equal; |
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| 32 | using std::ranges::fill; |
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| 33 | |
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| 34 | #else |
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| 35 | |
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| 36 | // Caveat: best effort, not a 1-to-1 mapping to c++20 style ranges |
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| 37 | |
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| 38 | constexpr auto equal = [](const auto &lhs, const auto &rhs, auto &&predicate) { |
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| 39 | return std::equal(lhs.begin(), lhs.end(), rhs.begin(), rhs.end(), predicate); |
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| 40 | }; |
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| 41 | |
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| 42 | constexpr auto fill = [](auto &range, auto &&value) { |
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| 43 | return std::fill(std::begin(range), std::end(range), value); |
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| 44 | }; |
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| 45 | |
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| 46 | #endif |
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| 47 | |
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| 48 | } // namespace QtMultimediaPrivate::ranges |
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| 49 | |
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| 50 | QT_END_NAMESPACE |
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| 51 | |
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| 52 | #endif // QMULTIMEDIA_RANGES_P_H |
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| 53 | |
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| 54 | |
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