| 1 | // Copyright (C) 2018 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 QQMLSOURCECOORDINATE_P_H |
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| 5 | #define QQMLSOURCECOORDINATE_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/private/qglobal_p.h> |
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| 19 | |
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| 20 | #include <limits> |
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| 21 | |
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| 22 | QT_BEGIN_NAMESPACE |
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| 23 | |
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| 24 | // These methods are needed because in some public methods we historically interpret -1 as the |
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| 25 | // invalid line or column, even though all the lines and columns are 1-based. Also, the different |
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| 26 | // integer ranges may turn certain large values into invalid ones on conversion. |
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| 27 | |
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| 28 | template<typename From, typename To> |
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| 29 | To qmlConvertSourceCoordinate(From n); |
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| 30 | |
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| 31 | template<> |
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| 32 | inline quint16 qmlConvertSourceCoordinate<int, quint16>(int n) |
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| 33 | { |
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| 34 | return (n > 0 && n <= int(std::numeric_limits<quint16>::max())) ? quint16(n) : 0; |
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| 35 | } |
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| 36 | |
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| 37 | template<> |
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| 38 | inline quint32 qmlConvertSourceCoordinate<int, quint32>(int n) |
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| 39 | { |
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| 40 | return n > 0 ? quint32(n) : 0u; |
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| 41 | } |
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| 42 | |
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| 43 | // TODO: In Qt6, change behavior and make the invalid coordinate 0 for the following two methods. |
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| 44 | |
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| 45 | template<> |
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| 46 | inline int qmlConvertSourceCoordinate<quint16, int>(quint16 n) |
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| 47 | { |
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| 48 | return (n == 0u) ? -1 : int(n); |
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| 49 | } |
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| 50 | |
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| 51 | template<> |
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| 52 | inline int qmlConvertSourceCoordinate<quint32, int>(quint32 n) |
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| 53 | { |
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| 54 | return (n == 0u || n > quint32(std::numeric_limits<int>::max())) ? -1 : int(n); |
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| 55 | } |
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| 56 | |
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| 57 | QT_END_NAMESPACE |
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| 58 | |
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| 59 | #endif // QQMLSOURCECOORDINATE_P_H |
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| 60 | |
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