| 1 | // Copyright (C) 2016 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 QSYSTEMERROR_P_H |
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| 5 | #define QSYSTEMERROR_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 | #include <qstring.h> |
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| 20 | |
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| 21 | QT_BEGIN_NAMESPACE |
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| 22 | |
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| 23 | class QSystemError |
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| 24 | { |
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| 25 | public: |
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| 26 | enum ErrorScope |
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| 27 | { |
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| 28 | NoError, |
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| 29 | StandardLibraryError, |
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| 30 | NativeError |
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| 31 | }; |
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| 32 | |
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| 33 | constexpr explicit QSystemError(int error, ErrorScope scope) |
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| 34 | : errorCode(error), errorScope(scope) |
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| 35 | { |
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| 36 | } |
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| 37 | constexpr QSystemError() = default; |
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| 38 | |
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| 39 | QString toString() const { return string(errorScope, errorCode); } |
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| 40 | constexpr ErrorScope scope() const { return errorScope; } |
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| 41 | constexpr int error() const { return errorCode; } |
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| 42 | |
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| 43 | constexpr bool ok() const noexcept { return errorScope == NoError; } |
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| 44 | static constexpr QSystemError stdError(int error) |
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| 45 | { return QSystemError(error, StandardLibraryError); } |
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| 46 | |
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| 47 | static Q_CORE_EXPORT QString string(ErrorScope errorScope, int errorCode); |
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| 48 | static Q_CORE_EXPORT QString stdString(int errorCode = -1); |
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| 49 | #ifdef Q_OS_WIN |
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| 50 | static Q_CORE_EXPORT QString windowsString(int errorCode = -1); |
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| 51 | using HRESULT = long; |
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| 52 | static Q_CORE_EXPORT QString windowsComString(HRESULT hr); |
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| 53 | |
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| 54 | static constexpr QSystemError nativeError(int error) |
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| 55 | { return QSystemError(error, NativeError); } |
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| 56 | #endif |
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| 57 | |
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| 58 | // data members |
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| 59 | int errorCode = 0; |
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| 60 | ErrorScope errorScope = NoError; |
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| 61 | }; |
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| 62 | |
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| 63 | QT_END_NAMESPACE |
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| 64 | |
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| 65 | #endif // QSYSTEMERROR_P_H |
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| 66 | |
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