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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 QMLJS_MANAGED_H
#define QMLJS_MANAGED_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 "qv4global_p.h"
#include "qv4value_p.h"
#include <private/qv4heap_p.h>
QT_BEGIN_NAMESPACE
namespace QV4 {
#define Q_MANAGED_CHECK \
template <typename Type> inline void qt_check_for_QMANAGED_macro(const Type *_q_argument) const \
{ int i = qYouForgotTheQ_MANAGED_Macro(this, _q_argument); i = i + 1; }
template <typename T>
inline int qYouForgotTheQ_MANAGED_Macro(T, T) { return 0; }
template <typename T1, typename T2>
inline void qYouForgotTheQ_MANAGED_Macro(T1, T2) {}
#ifdef Q_COMPILER_STATIC_ASSERT
#define V4_MANAGED_SIZE_TEST void __dataTest() { Q_STATIC_ASSERT(sizeof(*this) == sizeof(Managed)); }
#else
#define V4_MANAGED_SIZE_TEST
#endif
#define V4_NEEDS_DESTROY static void destroy(QV4::Heap::Base *b) { static_cast<Data *>(b)->~Data(); }
#define V4_MANAGED_ITSELF(DataClass, superClass) \
public: \
Q_MANAGED_CHECK \
typedef QV4::Heap::DataClass Data; \
typedef superClass SuperClass; \
static const QV4::VTable static_vtbl; \
static inline const QV4::VTable *staticVTable() { return &static_vtbl; } \
V4_MANAGED_SIZE_TEST \
QV4::Heap::DataClass *d() const { return static_cast<QV4::Heap::DataClass *>(m()); }
#define V4_MANAGED(DataClass, superClass) \
private: \
DataClass() Q_DECL_EQ_DELETE; \
Q_DISABLE_COPY(DataClass) \
V4_MANAGED_ITSELF(DataClass, superClass)
#define Q_MANAGED_TYPE(type) \
public: \
enum { MyType = Type_##type };
#define Q_VTABLE_FUNCTION(classname, func) \
(classname::func == QV4::Managed::func ? 0 : classname::func)
#define DEFINE_MANAGED_VTABLE_INT(classname, parentVTable) \
{ \
parentVTable, \
classname::IsExecutionContext, \
classname::IsString, \
classname::IsObject, \
classname::IsFunctionObject, \
classname::IsErrorObject, \
classname::IsArrayData, \
0, \
classname::MyType, \
#classname, \
Q_VTABLE_FUNCTION(classname, destroy), \
markObjects, \
isEqualTo \
}
#define DEFINE_MANAGED_VTABLE(classname) \
const QV4::VTable classname::static_vtbl = DEFINE_MANAGED_VTABLE_INT(classname, 0)
struct Q_QML_PRIVATE_EXPORT Managed : Value
{
V4_MANAGED_ITSELF(Base, Managed)
enum {
IsExecutionContext = false,
IsString = false,
IsObject = false,
IsFunctionObject = false,
IsErrorObject = false,
IsArrayData = false
};
private:
void *operator new(size_t);
Managed() Q_DECL_EQ_DELETE;
Q_DISABLE_COPY(Managed)
public:
enum Type {
Type_Invalid,
Type_String,
Type_Object,
Type_ArrayObject,
Type_FunctionObject,
Type_BooleanObject,
Type_NumberObject,
Type_StringObject,
Type_DateObject,
Type_RegExpObject,
Type_ErrorObject,
Type_ArgumentsObject,
Type_JsonObject,
Type_MathObject,
Type_ExecutionContext,
Type_ForeachIteratorObject,
Type_RegExp,
Type_QmlSequence
};
Q_MANAGED_TYPE(Invalid)
bool isListType() const { return d()->vtable()->type == Type_QmlSequence; }
bool isArrayObject() const { return d()->vtable()->type == Type_ArrayObject; }
bool isStringObject() const { return d()->vtable()->type == Type_StringObject; }
QString className() const;
bool isEqualTo(const Managed *other) const
{ return d()->vtable()->isEqualTo(const_cast<Managed *>(this), const_cast<Managed *>(other)); }
static bool isEqualTo(Managed *m, Managed *other);
bool inUse() const { return d()->inUse(); }
bool markBit() const { return d()->isMarked(); }
static void destroy(Heap::Base *) {}
private:
friend class MemoryManager;
friend struct Identifiers;
friend struct ObjectIterator;
};
template<>
inline const Managed *Value::as() const {
if (isManaged())
return managed();
return 0;
}
template<>
inline const Object *Value::as() const {
return isManaged() && m() && m()->vtable()->isObject ? objectValue() : 0;
}
}
QT_END_NAMESPACE
#endif
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