diff options
Diffstat (limited to 'src/qml/qml/qqmlpropertydata_p.h')
| -rw-r--r-- | src/qml/qml/qqmlpropertydata_p.h | 217 |
1 files changed, 118 insertions, 99 deletions
diff --git a/src/qml/qml/qqmlpropertydata_p.h b/src/qml/qml/qqmlpropertydata_p.h index 4decbf6e21..0fa7984f05 100644 --- a/src/qml/qml/qqmlpropertydata_p.h +++ b/src/qml/qml/qqmlpropertydata_p.h @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2019 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQml module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2019 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #ifndef QQMLPROPERTYDATA_P_H #define QQMLPROPERTYDATA_P_H @@ -64,7 +28,8 @@ public: enum WriteFlag { BypassInterceptor = 0x01, DontRemoveBinding = 0x02, - RemoveBindingOnAliasWrite = 0x04 + RemoveBindingOnAliasWrite = 0x04, + HasInternalIndex = 0x8, }; Q_DECLARE_FLAGS(WriteFlags, WriteFlag) @@ -72,19 +37,18 @@ public: struct Flags { friend class QQmlPropertyData; - enum Types { + enum Type { OtherType = 0, FunctionType = 1, // Is an invokable QObjectDerivedType = 2, // Property type is a QObject* derived type EnumType = 3, // Property type is an enum QListType = 4, // Property type is a QML list - QmlBindingType = 5, // Property type is a QQmlBinding* - QJSValueType = 6, // Property type is a QScriptValue - // Gap, used to be V4HandleType - VarPropertyType = 8, // Property type is a "var" property of VMEMO - QVariantType = 9 // Property is a QVariant + VarPropertyType = 5, // Property type is a "var" property of VMEMO + QVariantType = 6, // Property is a QVariant + // One spot left for an extra type in the 3 bits used to store this. }; + private: // The _otherBits (which "pad" the Flags struct to align it nicely) are used // to store the relative property index. It will only get used when said index fits. See // trySetStaticMetaCallFunction for details. @@ -97,38 +61,38 @@ public: // b when type equals FunctionType. For that reason, the semantic meaning of the bit is // overloaded, and the accessor functions are used to get the correct value // - // Moreover, isSignalHandler, isOverload and isCloned make only sense + // Moreover, isSignalHandler, isOverridableSignal and isCloned make only sense // for functions, too (and could at a later point be reused for flags that only make sense // for non-functions) // // Lastly, isDirect and isOverridden apply to both functions and non-functions - private: - unsigned isConstantORisVMEFunction : 1; // Has CONST flag OR Function was added by QML + unsigned isConst : 1; // Property: has CONST flag/Method: is const + unsigned isVMEFunction : 1; // Function was added by QML unsigned isWritableORhasArguments : 1; // Has WRITE function OR Function takes arguments unsigned isResettableORisSignal : 1; // Has RESET function OR Function is a signal unsigned isAliasORisVMESignal : 1; // Is a QML alias to another property OR Signal was added by QML - unsigned isFinalORisV4Function : 1; // Has FINAL flag OR Function takes QQmlV4Function* args + unsigned isFinalORisV4Function : 1; // Has FINAL flag OR Function takes QQmlV4FunctionPtr args unsigned isSignalHandler : 1; // Function is a signal handler - unsigned isOverload : 1; // Function is an overload of another function + + // TODO: Remove this once we can. Signals should not be overridable. + unsigned isOverridableSignal : 1; // Function is an overridable signal + unsigned isRequiredORisCloned : 1; // Has REQUIRED flag OR The function was marked as cloned - unsigned isConstructorORisBindable : 1; // The function was marked is a constructor OR property is backed by QProperty<T> - unsigned isDirect : 1; // Exists on a C++ QMetaObject + unsigned isConstructorORisBindable : 1; // The function was marked is a constructor OR property is backed by QProperty<T> unsigned isOverridden : 1; // Is overridden by a extension property - public: - unsigned type : 4; // stores an entry of Types - - // Apply only to IsFunctions + unsigned hasMetaObject : 1; + unsigned type : 3; // stores an entry of Types // Internal QQmlPropertyCache flags - unsigned overrideIndexIsProperty: 1; + unsigned overrideIndexIsProperty : 1; + public: inline Flags(); inline bool operator==(const Flags &other) const; inline void copyPropertyTypeFlags(Flags from); void setIsConstant(bool b) { - Q_ASSERT(type != FunctionType); - isConstantORisVMEFunction = b; + isConst = b; } void setIsWritable(bool b) { @@ -160,10 +124,6 @@ public: isConstructorORisBindable = b; } - void setIsDirect(bool b) { - isDirect = b; - } - void setIsRequired(bool b) { Q_ASSERT(type != FunctionType); isRequiredORisCloned = b; @@ -171,7 +131,7 @@ public: void setIsVMEFunction(bool b) { Q_ASSERT(type == FunctionType); - isConstantORisVMEFunction = b; + isVMEFunction = b; } void setHasArguments(bool b) { Q_ASSERT(type == FunctionType); @@ -196,9 +156,11 @@ public: isSignalHandler = b; } - void setIsOverload(bool b) { + // TODO: Remove this once we can. Signals should not be overridable. + void setIsOverridableSignal(bool b) { Q_ASSERT(type == FunctionType); - isOverload = b; + Q_ASSERT(isResettableORisSignal); + isOverridableSignal = b; } void setIsCloned(bool b) { @@ -211,6 +173,13 @@ public: isConstructorORisBindable = b; } + void setHasMetaObject(bool b) { + hasMetaObject = b; + } + + void setType(Type newType) { + type = newType; + } }; @@ -226,32 +195,32 @@ public: bool isValid() const { return coreIndex() != -1; } - bool isConstant() const { return !isFunction() && m_flags.isConstantORisVMEFunction; } + bool isConstant() const { return m_flags.isConst; } bool isWritable() const { return !isFunction() && m_flags.isWritableORhasArguments; } void setWritable(bool onoff) { Q_ASSERT(!isFunction()); m_flags.isWritableORhasArguments = onoff; } bool isResettable() const { return !isFunction() && m_flags.isResettableORisSignal; } bool isAlias() const { return !isFunction() && m_flags.isAliasORisVMESignal; } bool isFinal() const { return !isFunction() && m_flags.isFinalORisV4Function; } bool isOverridden() const { return m_flags.isOverridden; } - bool isDirect() const { return m_flags.isDirect; } bool isRequired() const { return !isFunction() && m_flags.isRequiredORisCloned; } bool hasStaticMetaCallFunction() const { return staticMetaCallFunction() != nullptr; } bool isFunction() const { return m_flags.type == Flags::FunctionType; } bool isQObject() const { return m_flags.type == Flags::QObjectDerivedType; } bool isEnum() const { return m_flags.type == Flags::EnumType; } bool isQList() const { return m_flags.type == Flags::QListType; } - bool isQmlBinding() const { return m_flags.type == Flags::QmlBindingType; } - bool isQJSValue() const { return m_flags.type == Flags::QJSValueType; } bool isVarProperty() const { return m_flags.type == Flags::VarPropertyType; } bool isQVariant() const { return m_flags.type == Flags::QVariantType; } - bool isVMEFunction() const { return isFunction() && m_flags.isConstantORisVMEFunction; } + bool isVMEFunction() const { return isFunction() && m_flags.isVMEFunction; } bool hasArguments() const { return isFunction() && m_flags.isWritableORhasArguments; } bool isSignal() const { return isFunction() && m_flags.isResettableORisSignal; } bool isVMESignal() const { return isFunction() && m_flags.isAliasORisVMESignal; } bool isV4Function() const { return isFunction() && m_flags.isFinalORisV4Function; } bool isSignalHandler() const { return m_flags.isSignalHandler; } - bool isOverload() const { return m_flags.isOverload; } - void setOverload(bool onoff) { m_flags.isOverload = onoff; } + bool hasMetaObject() const { return m_flags.hasMetaObject; } + + // TODO: Remove this once we can. Signals should not be overridable. + bool isOverridableSignal() const { return m_flags.isOverridableSignal; } + bool isCloned() const { return isFunction() && m_flags.isRequiredORisCloned; } bool isConstructor() const { return isFunction() && m_flags.isConstructorORisBindable; } bool isBindable() const { return !isFunction() && m_flags.isConstructorORisBindable; } @@ -316,8 +285,36 @@ public: QTypeRevision typeVersion() const { return m_typeVersion; } void setTypeVersion(QTypeRevision typeVersion) { m_typeVersion = typeVersion; } - QQmlPropertyCacheMethodArguments *arguments() const { return m_arguments; } - void setArguments(QQmlPropertyCacheMethodArguments *args) { m_arguments = args; } + QQmlPropertyCacheMethodArguments *arguments() const + { + Q_ASSERT(!hasMetaObject()); + return m_arguments; + } + void setArguments(QQmlPropertyCacheMethodArguments *args) + { + Q_ASSERT(!hasMetaObject()); + m_arguments = args; + } + + const QMetaObject *metaObject() const + { + Q_ASSERT(hasMetaObject()); + return m_metaObject; + } + + void setMetaObject(const QMetaObject *metaObject) + { + Q_ASSERT(!hasArguments() || !m_arguments); + m_flags.setHasMetaObject(true); + m_metaObject = metaObject; + } + + QMetaMethod metaMethod() const + { + Q_ASSERT(hasMetaObject()); + Q_ASSERT(isFunction()); + return m_metaObject->method(m_coreIndex); + } int metaObjectOffset() const { return m_metaObjectOffset; } void setMetaObjectOffset(int off) @@ -327,9 +324,10 @@ public: m_metaObjectOffset = qint16(off); } - StaticMetaCallFunction staticMetaCallFunction() const { return m_staticMetaCallFunction; } + StaticMetaCallFunction staticMetaCallFunction() const { Q_ASSERT(!isFunction()); return m_staticMetaCallFunction; } void trySetStaticMetaCallFunction(StaticMetaCallFunction f, unsigned relativePropertyIndex) { + Q_ASSERT(!isFunction()); if (relativePropertyIndex < (1 << Flags::BitsLeftInFlags) - 1) { m_flags.otherBits = relativePropertyIndex; m_staticMetaCallFunction = f; @@ -343,7 +341,7 @@ public: QString name(QObject *) const; QString name(const QMetaObject *) const; - void markAsOverrideOf(QQmlPropertyData *predecessor); + bool markAsOverrideOf(QQmlPropertyData *predecessor); inline void readProperty(QObject *target, void *property) const { @@ -351,14 +349,23 @@ public: readPropertyWithArgs(target, args); } - inline void readPropertyWithArgs(QObject *target, void *args[]) const + // This is the same as QMetaObject::metacall(), but inlined here to avoid a function call. + // And we ignore the return value. + template<QMetaObject::Call call> + void doMetacall(QObject *object, int idx, void **argv) const + { + if (QDynamicMetaObjectData *dynamicMetaObject = QObjectPrivate::get(object)->metaObject) + dynamicMetaObject->metaCall(object, call, idx, argv); + else + object->qt_metacall(call, idx, argv); + } + + void readPropertyWithArgs(QObject *target, void *args[]) const { if (hasStaticMetaCallFunction()) staticMetaCallFunction()(target, QMetaObject::ReadProperty, relativePropertyIndex(), args); - else if (isDirect()) - target->qt_metacall(QMetaObject::ReadProperty, coreIndex(), args); else - QMetaObject::metacall(target, QMetaObject::ReadProperty, coreIndex(), args); + doMetacall<QMetaObject::ReadProperty>(target, coreIndex(), args); } bool writeProperty(QObject *target, void *value, WriteFlags flags) const @@ -367,17 +374,24 @@ public: void *argv[] = { value, nullptr, &status, &flags }; if (flags.testFlag(BypassInterceptor) && hasStaticMetaCallFunction()) staticMetaCallFunction()(target, QMetaObject::WriteProperty, relativePropertyIndex(), argv); - else if (flags.testFlag(BypassInterceptor) && isDirect()) - target->qt_metacall(QMetaObject::WriteProperty, coreIndex(), argv); else - QMetaObject::metacall(target, QMetaObject::WriteProperty, coreIndex(), argv); + doMetacall<QMetaObject::WriteProperty>(target, coreIndex(), argv); + return true; + } + + bool resetProperty(QObject *target, WriteFlags flags) const + { + if (flags.testFlag(BypassInterceptor) && hasStaticMetaCallFunction()) + staticMetaCallFunction()(target, QMetaObject::ResetProperty, relativePropertyIndex(), nullptr); + else + doMetacall<QMetaObject::ResetProperty>(target, coreIndex(), nullptr); return true; } static Flags defaultSignalFlags() { Flags f; - f.type = Flags::FunctionType; + f.setType(Flags::FunctionType); f.setIsSignal(true); f.setIsVMESignal(true); return f; @@ -386,15 +400,13 @@ public: static Flags defaultSlotFlags() { Flags f; - f.type = Flags::FunctionType; + f.setType(Flags::FunctionType); f.setIsVMEFunction(true); return f; } private: friend class QQmlPropertyCache; - void lazyLoad(const QMetaProperty &); - void lazyLoad(const QMetaMethod &); Flags m_flags; qint16 m_coreIndex = -1; @@ -411,16 +423,21 @@ private: QMetaType m_propType = {}; - QQmlPropertyCacheMethodArguments *m_arguments = nullptr; - StaticMetaCallFunction m_staticMetaCallFunction = nullptr; + union { + QQmlPropertyCacheMethodArguments *m_arguments = nullptr; + StaticMetaCallFunction m_staticMetaCallFunction; + const QMetaObject *m_metaObject; + }; }; #if QT_POINTER_SIZE == 4 - Q_STATIC_ASSERT(sizeof(QQmlPropertyData) == 28); + Q_STATIC_ASSERT(sizeof(QQmlPropertyData) == 24); #else // QT_POINTER_SIZE == 8 - Q_STATIC_ASSERT(sizeof(QQmlPropertyData) == 40); + Q_STATIC_ASSERT(sizeof(QQmlPropertyData) == 32); #endif +static_assert(std::is_trivially_copyable<QQmlPropertyData>::value); + bool QQmlPropertyData::operator==(const QQmlPropertyData &other) const { return flags() == other.flags() && @@ -432,24 +449,27 @@ bool QQmlPropertyData::operator==(const QQmlPropertyData &other) const QQmlPropertyData::Flags::Flags() : otherBits(0) - , isConstantORisVMEFunction(false) + , isConst(false) + , isVMEFunction(false) , isWritableORhasArguments(false) , isResettableORisSignal(false) , isAliasORisVMESignal(false) , isFinalORisV4Function(false) , isSignalHandler(false) - , isOverload(false) + , isOverridableSignal(false) , isRequiredORisCloned(false) , isConstructorORisBindable(false) - , isDirect(false) , isOverridden(false) + , hasMetaObject(false) , type(OtherType) , overrideIndexIsProperty(false) -{} +{ +} bool QQmlPropertyData::Flags::operator==(const QQmlPropertyData::Flags &other) const { - return isConstantORisVMEFunction == other.isConstantORisVMEFunction && + return isConst == other.isConst && + isVMEFunction == other.isVMEFunction && isWritableORhasArguments == other.isWritableORhasArguments && isResettableORisSignal == other.isResettableORisSignal && isAliasORisVMESignal == other.isAliasORisVMESignal && @@ -457,6 +477,7 @@ bool QQmlPropertyData::Flags::operator==(const QQmlPropertyData::Flags &other) c isOverridden == other.isOverridden && isSignalHandler == other.isSignalHandler && isRequiredORisCloned == other.isRequiredORisCloned && + hasMetaObject == other.hasMetaObject && type == other.type && isConstructorORisBindable == other.isConstructorORisBindable && overrideIndexIsProperty == other.overrideIndexIsProperty; @@ -468,8 +489,6 @@ void QQmlPropertyData::Flags::copyPropertyTypeFlags(QQmlPropertyData::Flags from case QObjectDerivedType: case EnumType: case QListType: - case QmlBindingType: - case QJSValueType: case QVariantType: type = from.type; } |