| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef QSYSTEMERROR_P_H |
| 5 | #define QSYSTEMERROR_P_H |
| 6 | |
| 7 | // |
| 8 | // W A R N I N G |
| 9 | // ------------- |
| 10 | // |
| 11 | // This file is not part of the Qt API. It exists purely as an |
| 12 | // implementation detail. This header file may change from version to |
| 13 | // version without notice, or even be removed. |
| 14 | // |
| 15 | // We mean it. |
| 16 | // |
| 17 | |
| 18 | #include <QtCore/private/qglobal_p.h> |
| 19 | #include <qstring.h> |
| 20 | |
| 21 | QT_BEGIN_NAMESPACE |
| 22 | |
| 23 | class QSystemError |
| 24 | { |
| 25 | public: |
| 26 | enum ErrorScope |
| 27 | { |
| 28 | NoError, |
| 29 | StandardLibraryError, |
| 30 | NativeError |
| 31 | }; |
| 32 | |
| 33 | constexpr explicit QSystemError(int error, ErrorScope scope) |
| 34 | : errorCode(error), errorScope(scope) |
| 35 | { |
| 36 | } |
| 37 | constexpr QSystemError() = default; |
| 38 | |
| 39 | QString toString() const { return string(errorScope, errorCode); } |
| 40 | constexpr ErrorScope scope() const { return errorScope; } |
| 41 | constexpr int error() const { return errorCode; } |
| 42 | |
| 43 | constexpr bool ok() const noexcept { return errorScope == NoError; } |
| 44 | static constexpr QSystemError stdError(int error) |
| 45 | { return QSystemError(error, StandardLibraryError); } |
| 46 | |
| 47 | static Q_CORE_EXPORT QString string(ErrorScope errorScope, int errorCode); |
| 48 | static Q_CORE_EXPORT QString stdString(int errorCode = -1); |
| 49 | #ifdef Q_OS_WIN |
| 50 | static Q_CORE_EXPORT QString windowsString(int errorCode = -1); |
| 51 | using HRESULT = long; |
| 52 | static Q_CORE_EXPORT QString windowsComString(HRESULT hr); |
| 53 | |
| 54 | static constexpr QSystemError nativeError(int error) |
| 55 | { return QSystemError(error, NativeError); } |
| 56 | #endif |
| 57 | |
| 58 | // data members |
| 59 | int errorCode = 0; |
| 60 | ErrorScope errorScope = NoError; |
| 61 | }; |
| 62 | |
| 63 | QT_END_NAMESPACE |
| 64 | |
| 65 | #endif // QSYSTEMERROR_P_H |
| 66 |