291 lines
9.8 KiB
C++
291 lines
9.8 KiB
C++
// Copyright (C) 2020 The Qt Company Ltd.
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// Copyright (C) 2014 Olivier Goffart <ogoffart@woboq.com>
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// 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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#ifndef QMETAOBJECT_P_H
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#define QMETAOBJECT_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists for the convenience
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// of moc. This header file may change from version to version without notice,
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// or even be removed.
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//
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// We mean it.
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//
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#include <QtCore/qglobal.h>
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#include <QtCore/qobjectdefs.h>
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#include <QtCore/qmutex.h>
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#include <QtCore/qmetaobject.h>
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#ifndef QT_NO_QOBJECT
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#include <private/qobject_p.h> // For QObjectPrivate::Connection
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#endif
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#include <QtCore/qvarlengtharray.h>
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QT_BEGIN_NAMESPACE
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// ### TODO - QTBUG-87869: wrap in a proper Q_NAMESPACE and use scoped enums, to avoid name clashes
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enum PropertyFlags {
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Invalid = 0x00000000,
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Readable = 0x00000001,
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Writable = 0x00000002,
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Resettable = 0x00000004,
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EnumOrFlag = 0x00000008,
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Alias = 0x00000010,
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// Reserved for future usage = 0x00000020,
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StdCppSet = 0x00000100,
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Constant = 0x00000400,
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Final = 0x00000800,
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Designable = 0x00001000,
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Scriptable = 0x00004000,
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Stored = 0x00010000,
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User = 0x00100000,
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Required = 0x01000000,
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Bindable = 0x02000000
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};
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enum MethodFlags {
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AccessPrivate = 0x00,
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AccessProtected = 0x01,
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AccessPublic = 0x02,
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AccessMask = 0x03, // mask
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MethodMethod = 0x00,
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MethodSignal = 0x04,
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MethodSlot = 0x08,
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MethodConstructor = 0x0c,
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MethodTypeMask = 0x0c,
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MethodCompatibility = 0x10,
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MethodCloned = 0x20,
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MethodScriptable = 0x40,
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MethodRevisioned = 0x80,
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MethodIsConst = 0x100, // no use case for volatile so far
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};
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enum MetaObjectFlag {
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DynamicMetaObject = 0x01,
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RequiresVariantMetaObject = 0x02,
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PropertyAccessInStaticMetaCall = 0x04 // since Qt 5.5, property code is in the static metacall
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};
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Q_DECLARE_FLAGS(MetaObjectFlags, MetaObjectFlag)
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Q_DECLARE_OPERATORS_FOR_FLAGS(MetaObjectFlags)
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enum MetaDataFlags {
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IsUnresolvedType = 0x80000000,
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TypeNameIndexMask = 0x7FFFFFFF,
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IsUnresolvedSignal = 0x70000000
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};
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enum EnumFlags {
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EnumIsFlag = 0x1,
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EnumIsScoped = 0x2
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};
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Q_CORE_EXPORT int qMetaTypeTypeInternal(const char *);
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class QArgumentType
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{
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public:
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QArgumentType(int type)
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: _type(type)
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{}
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QArgumentType(const QByteArray &name)
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: _type(qMetaTypeTypeInternal(name.constData())), _name(name)
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{}
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QArgumentType()
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: _type(0)
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{}
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int type() const
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{ return _type; }
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QByteArray name() const
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{
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if (_type && _name.isEmpty())
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const_cast<QArgumentType *>(this)->_name = QMetaType(_type).name();
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return _name;
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}
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bool operator==(const QArgumentType &other) const
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{
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if (_type && other._type)
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return _type == other._type;
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else
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return name() == other.name();
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}
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bool operator!=(const QArgumentType &other) const
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{
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if (_type && other._type)
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return _type != other._type;
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else
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return name() != other.name();
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}
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private:
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int _type;
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QByteArray _name;
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};
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Q_DECLARE_TYPEINFO(QArgumentType, Q_RELOCATABLE_TYPE);
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typedef QVarLengthArray<QArgumentType, 10> QArgumentTypeArray;
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namespace { class QMetaMethodPrivate; }
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class QMetaMethodInvoker : public QMetaMethod
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{
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QMetaMethodInvoker() = delete;
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public:
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enum class InvokeFailReason : int {
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// negative values mean a match was found but the invocation failed
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// (and a warning has been printed)
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ReturnTypeMismatch = -1,
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DeadLockDetected = -2,
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CallViaVirtualFailed = -3, // no warning
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ConstructorCallOnObject = -4,
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ConstructorCallWithoutResult = -5,
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ConstructorCallFailed = -6, // no warning
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CouldNotQueueParameter = -0x1000,
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// zero is success
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None = 0,
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// positive values mean the parameters did not match
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TooFewArguments,
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FormalParameterMismatch = 0x1000,
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};
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// shadows the public function
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static InvokeFailReason Q_CORE_EXPORT
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invokeImpl(QMetaMethod self, void *target, Qt::ConnectionType, qsizetype paramCount,
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const void *const *parameters, const char *const *typeNames);
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};
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struct QMetaObjectPrivate
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{
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// revision 7 is Qt 5.0 everything lower is not supported
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// revision 8 is Qt 5.12: It adds the enum name to QMetaEnum
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// revision 9 is Qt 6.0: It adds the metatype of properties and methods
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// revision 10 is Qt 6.2: The metatype of the metaobject is stored in the metatypes array
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// and metamethods store a flag stating whether they are const
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enum { OutputRevision = 10 }; // Used by moc, qmetaobjectbuilder and qdbus
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enum { IntsPerMethod = QMetaMethod::Data::Size };
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enum { IntsPerEnum = QMetaEnum::Data::Size };
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enum { IntsPerProperty = QMetaProperty::Data::Size };
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int revision;
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int className;
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int classInfoCount, classInfoData;
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int methodCount, methodData;
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int propertyCount, propertyData;
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int enumeratorCount, enumeratorData;
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int constructorCount, constructorData;
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int flags;
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int signalCount;
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static inline const QMetaObjectPrivate *get(const QMetaObject *metaobject)
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{ return reinterpret_cast<const QMetaObjectPrivate*>(metaobject->d.data); }
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static int originalClone(const QMetaObject *obj, int local_method_index);
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static QByteArray decodeMethodSignature(const char *signature,
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QArgumentTypeArray &types);
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static int indexOfSignalRelative(const QMetaObject **baseObject,
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const QByteArray &name, int argc,
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const QArgumentType *types);
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static int indexOfSlotRelative(const QMetaObject **m,
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const QByteArray &name, int argc,
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const QArgumentType *types);
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static int indexOfSignal(const QMetaObject *m, const QByteArray &name,
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int argc, const QArgumentType *types);
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static int indexOfSlot(const QMetaObject *m, const QByteArray &name,
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int argc, const QArgumentType *types);
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static int indexOfMethod(const QMetaObject *m, const QByteArray &name,
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int argc, const QArgumentType *types);
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static int indexOfConstructor(const QMetaObject *m, const QByteArray &name,
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int argc, const QArgumentType *types);
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Q_CORE_EXPORT static QMetaMethod signal(const QMetaObject *m, int signal_index);
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static inline int signalOffset(const QMetaObject *m)
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{
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Q_ASSERT(m != nullptr);
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int offset = 0;
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for (m = m->d.superdata; m; m = m->d.superdata)
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offset += reinterpret_cast<const QMetaObjectPrivate *>(m->d.data)->signalCount;
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return offset;
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}
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Q_CORE_EXPORT static int absoluteSignalCount(const QMetaObject *m);
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Q_CORE_EXPORT static int signalIndex(const QMetaMethod &m);
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static bool checkConnectArgs(int signalArgc, const QArgumentType *signalTypes,
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int methodArgc, const QArgumentType *methodTypes);
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static bool checkConnectArgs(const QMetaMethodPrivate *signal,
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const QMetaMethodPrivate *method);
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static QList<QByteArray> parameterTypeNamesFromSignature(const char *signature);
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#ifndef QT_NO_QOBJECT
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// defined in qobject.cpp
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enum DisconnectType { DisconnectAll, DisconnectOne };
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static void memberIndexes(const QObject *obj, const QMetaMethod &member,
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int *signalIndex, int *methodIndex);
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static QObjectPrivate::Connection *connect(const QObject *sender, int signal_index,
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const QMetaObject *smeta,
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const QObject *receiver, int method_index_relative,
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const QMetaObject *rmeta = nullptr,
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int type = 0, int *types = nullptr);
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static bool disconnect(const QObject *sender, int signal_index,
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const QMetaObject *smeta,
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const QObject *receiver, int method_index, void **slot,
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DisconnectType = DisconnectAll);
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static inline bool disconnectHelper(QObjectPrivate::ConnectionData *connections, int signalIndex,
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const QObject *receiver, int method_index, void **slot,
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QBasicMutex *senderMutex, DisconnectType = DisconnectAll);
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#endif
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template<int MethodType>
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static inline int indexOfMethodRelative(const QMetaObject **baseObject,
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const QByteArray &name, int argc,
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const QArgumentType *types);
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static bool methodMatch(const QMetaObject *m, const QMetaMethod &method,
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const QByteArray &name, int argc,
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const QArgumentType *types);
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Q_CORE_EXPORT static QMetaMethod firstMethod(const QMetaObject *baseObject, QByteArrayView name);
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};
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// For meta-object generators
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enum { MetaObjectPrivateFieldCount = sizeof(QMetaObjectPrivate) / sizeof(int) };
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#ifndef UTILS_H
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// mirrored in moc's utils.h
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static inline bool is_ident_char(char s)
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{
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return ((s >= 'a' && s <= 'z')
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|| (s >= 'A' && s <= 'Z')
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|| (s >= '0' && s <= '9')
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|| s == '_'
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);
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}
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static inline bool is_space(char s)
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{
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return (s == ' ' || s == '\t');
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}
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#endif
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/*
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This function is shared with moc.cpp. The implementation lives in qmetaobject_moc_p.h, which
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should be included where needed. The declaration here is not used to avoid warnings from
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the compiler about unused functions.
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static QByteArray normalizeTypeInternal(const char *t, const char *e, bool fixScope = false, bool adjustConst = true);
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*/
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QT_END_NAMESPACE
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#endif
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