ProxSpace/Qt/5.6/include/QtQml/qqmlprivate.h
2016-10-31 22:04:38 +01:00

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8.5 KiB
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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQMLPRIVATE_H
#define QQMLPRIVATE_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtQml/qtqmlglobal.h>
#include <QtCore/qglobal.h>
#include <QtCore/qvariant.h>
#include <QtCore/qurl.h>
QT_BEGIN_NAMESPACE
namespace QQmlPrivate {
struct CachedQmlUnit;
}
namespace QV4 {
struct ExecutionEngine;
namespace CompiledData {
struct Unit;
struct CompilationUnit;
}
typedef CompiledData::CompilationUnit *(*CompilationUnitFactoryFunction)();
}
namespace QmlIR {
struct Document;
typedef void (*IRLoaderFunction)(Document *, const QQmlPrivate::CachedQmlUnit *);
}
typedef QObject *(*QQmlAttachedPropertiesFunc)(QObject *);
template <typename TYPE>
class QQmlTypeInfo
{
public:
enum {
hasAttachedProperties = 0
};
};
class QJSValue;
class QJSEngine;
class QQmlEngine;
class QQmlCustomParser;
namespace QQmlPrivate
{
void Q_QML_EXPORT qdeclarativeelement_destructor(QObject *);
template<typename T>
class QQmlElement : public T
{
public:
virtual ~QQmlElement() {
QQmlPrivate::qdeclarativeelement_destructor(this);
}
};
template<typename T>
void createInto(void *memory) { new (memory) QQmlElement<T>; }
template<typename T>
QObject *createParent(QObject *p) { return new T(p); }
template<class From, class To, int N>
struct StaticCastSelectorClass
{
static inline int cast() { return -1; }
};
template<class From, class To>
struct StaticCastSelectorClass<From, To, sizeof(int)>
{
static inline int cast() { return int(reinterpret_cast<quintptr>(static_cast<To *>(reinterpret_cast<From *>(0x10000000)))) - 0x10000000; }
};
template<class From, class To>
struct StaticCastSelector
{
typedef int yes_type;
typedef char no_type;
static yes_type checkType(To *);
static no_type checkType(...);
static inline int cast()
{
return StaticCastSelectorClass<From, To, sizeof(checkType(reinterpret_cast<From *>(0)))>::cast();
}
};
template <typename T>
struct has_attachedPropertiesMember
{
static bool const value = QQmlTypeInfo<T>::hasAttachedProperties;
};
template <typename T, bool hasMember>
class has_attachedPropertiesMethod
{
public:
typedef int yes_type;
typedef char no_type;
template<typename ReturnType>
static yes_type checkType(ReturnType *(*)(QObject *));
static no_type checkType(...);
static bool const value = sizeof(checkType(&T::qmlAttachedProperties)) == sizeof(yes_type);
};
template <typename T>
class has_attachedPropertiesMethod<T, false>
{
public:
static bool const value = false;
};
template<typename T, int N>
class AttachedPropertySelector
{
public:
static inline QQmlAttachedPropertiesFunc func() { return 0; }
static inline const QMetaObject *metaObject() { return 0; }
};
template<typename T>
class AttachedPropertySelector<T, 1>
{
static inline QObject *attachedProperties(QObject *obj) {
return T::qmlAttachedProperties(obj);
}
template<typename ReturnType>
static inline const QMetaObject *attachedPropertiesMetaObject(ReturnType *(*)(QObject *)) {
return &ReturnType::staticMetaObject;
}
public:
static inline QQmlAttachedPropertiesFunc func() {
return &attachedProperties;
}
static inline const QMetaObject *metaObject() {
return attachedPropertiesMetaObject(&T::qmlAttachedProperties);
}
};
template<typename T>
inline QQmlAttachedPropertiesFunc attachedPropertiesFunc()
{
return AttachedPropertySelector<T, has_attachedPropertiesMethod<T, has_attachedPropertiesMember<T>::value>::value>::func();
}
template<typename T>
inline const QMetaObject *attachedPropertiesMetaObject()
{
return AttachedPropertySelector<T, has_attachedPropertiesMethod<T, has_attachedPropertiesMember<T>::value>::value>::metaObject();
}
enum AutoParentResult { Parented, IncompatibleObject, IncompatibleParent };
typedef AutoParentResult (*AutoParentFunction)(QObject *object, QObject *parent);
struct RegisterType {
int version;
int typeId;
int listId;
int objectSize;
void (*create)(void *);
QString noCreationReason;
const char *uri;
int versionMajor;
int versionMinor;
const char *elementName;
const QMetaObject *metaObject;
QQmlAttachedPropertiesFunc attachedPropertiesFunction;
const QMetaObject *attachedPropertiesMetaObject;
int parserStatusCast;
int valueSourceCast;
int valueInterceptorCast;
QObject *(*extensionObjectCreate)(QObject *);
const QMetaObject *extensionMetaObject;
QQmlCustomParser *customParser;
int revision;
// If this is extended ensure "version" is bumped!!!
};
struct RegisterInterface {
int version;
int typeId;
int listId;
const char *iid;
};
struct RegisterAutoParent {
int version;
AutoParentFunction function;
};
struct RegisterSingletonType {
int version;
const char *uri;
int versionMajor;
int versionMinor;
const char *typeName;
QJSValue (*scriptApi)(QQmlEngine *, QJSEngine *);
QObject *(*qobjectApi)(QQmlEngine *, QJSEngine *);
const QMetaObject *instanceMetaObject; // new in version 1
int typeId; // new in version 2
int revision; // new in version 2
// If this is extended ensure "version" is bumped!!!
};
struct RegisterCompositeType {
QUrl url;
const char *uri;
int versionMajor;
int versionMinor;
const char *typeName;
};
struct RegisterCompositeSingletonType {
QUrl url;
const char *uri;
int versionMajor;
int versionMinor;
const char *typeName;
};
struct CachedQmlUnit {
const QV4::CompiledData::Unit *qmlData;
QV4::CompilationUnitFactoryFunction createCompilationUnit;
QmlIR::IRLoaderFunction loadIR;
};
typedef const CachedQmlUnit *(*QmlUnitCacheLookupFunction)(const QUrl &url);
struct RegisterQmlUnitCacheHook {
int version;
QmlUnitCacheLookupFunction lookupCachedQmlUnit;
};
enum RegistrationType {
TypeRegistration = 0,
InterfaceRegistration = 1,
AutoParentRegistration = 2,
SingletonRegistration = 3,
CompositeRegistration = 4,
CompositeSingletonRegistration = 5,
QmlUnitCacheHookRegistration = 6
};
int Q_QML_EXPORT qmlregister(RegistrationType, void *);
}
QT_END_NAMESPACE
#endif // QQMLPRIVATE_H