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39
40#ifndef QTCORE_QEXCEPTION_H
41#define QTCORE_QEXCEPTION_H
42
43#include <QtCore/qatomic.h>
44#include <QtCore/qshareddata.h>
45
46#ifndef QT_NO_EXCEPTIONS
47# include <exception>
48#endif
49
50QT_REQUIRE_CONFIG(future);
51
52QT_BEGIN_NAMESPACE
53
54
55#if !defined(QT_NO_EXCEPTIONS) || defined(Q_CLANG_QDOC)
56
57class Q_CORE_EXPORT QException : public std::exception
58{
59public:
60 ~QException()
61#ifdef Q_COMPILER_NOEXCEPT
62 noexcept
63#else
64 throw()
65#endif
66 ;
67 virtual void raise() const;
68 virtual QException *clone() const;
69};
70
71class Q_CORE_EXPORT QUnhandledException : public QException
72{
73public:
74 ~QUnhandledException()
75#ifdef Q_COMPILER_NOEXCEPT
76 noexcept
77#else
78 throw()
79#endif
80 ;
81 void raise() const override;
82 QUnhandledException *clone() const override;
83};
84
85namespace QtPrivate {
86
87class Base;
88class Q_CORE_EXPORT ExceptionHolder
89{
90public:
91 ExceptionHolder(QException *exception = nullptr);
92 ExceptionHolder(const ExceptionHolder &other);
93 void operator=(const ExceptionHolder &other); // ### Qt6: copy-assign operator shouldn't return void. Remove this method and the copy-ctor, they are unneeded.
94 ~ExceptionHolder();
95 QException *exception() const;
96 QExplicitlySharedDataPointer<Base> base;
97};
98
99class Q_CORE_EXPORT ExceptionStore
100{
101public:
102 void setException(const QException &e);
103 bool hasException() const;
104 ExceptionHolder exception();
105 void throwPossibleException();
106 bool hasThrown() const;
107 ExceptionHolder exceptionHolder;
108};
109
110} // namespace QtPrivate
111
112#else // QT_NO_EXCEPTIONS
113
114namespace QtPrivate {
115
116class Q_CORE_EXPORT ExceptionStore
117{
118public:
119 ExceptionStore() { }
120 inline void throwPossibleException() {}
121};
122
123} // namespace QtPrivate
124
125#endif // QT_NO_EXCEPTIONS
126
127QT_END_NAMESPACE
128
129#endif
130