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/****************************************************************************
**
** Copyright (C) 2017 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QV4ENGINEBASE_P_H
#define QV4ENGINEBASE_P_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 <private/qv4global_p.h>
#include <private/qv4runtimeapi_p.h>
QT_BEGIN_NAMESPACE
namespace QV4 {
// Base class for the execution engine
#if defined(Q_CC_MSVC) || defined(Q_CC_GNU)
#pragma pack(push, 1)
#endif
struct EngineBase {
Heap::ExecutionContext *current = 0;
Value *jsStackTop = 0;
quint8 hasException = false;
quint8 writeBarrierActive = false;
quint16 unused = 0;
#if QT_POINTER_SIZE == 8
quint8 padding[4];
#endif
MemoryManager *memoryManager = 0;
Runtime runtime;
qint32 callDepth = 0;
Value *jsStackLimit = 0;
Value *jsStackBase = 0;
ExecutionContext *currentContext = 0;
IdentifierTable *identifierTable = 0;
Object *globalObject = 0;
enum {
Class_Empty,
Class_String,
Class_MemberData,
Class_SimpleArrayData,
Class_SparseArrayData,
Class_ExecutionContext,
Class_SimpleCallContext,
Class_Object,
Class_ArrayObject,
Class_FunctionObject,
Class_StringObject,
Class_ScriptFunction,
Class_BuiltinFunction,
Class_ObjectProto,
Class_RegExp,
Class_RegExpObject,
Class_RegExpExecArray,
Class_ArgumentsObject,
Class_StrictArgumentsObject,
Class_ErrorObject,
Class_ErrorObjectWithMessage,
Class_ErrorProto,
NClasses
};
InternalClass *internalClasses[NClasses];
};
#if defined(Q_CC_MSVC) || defined(Q_CC_GNU)
#pragma pack(pop)
#endif
Q_STATIC_ASSERT(std::is_standard_layout<EngineBase>::value);
Q_STATIC_ASSERT(offsetof(EngineBase, current) == 0);
Q_STATIC_ASSERT(offsetof(EngineBase, jsStackTop) == offsetof(EngineBase, current) + QT_POINTER_SIZE);
Q_STATIC_ASSERT(offsetof(EngineBase, hasException) == offsetof(EngineBase, jsStackTop) + QT_POINTER_SIZE);
Q_STATIC_ASSERT(offsetof(EngineBase, memoryManager) == offsetof(EngineBase, hasException) + QT_POINTER_SIZE);
Q_STATIC_ASSERT(offsetof(EngineBase, runtime) == offsetof(EngineBase, memoryManager) + QT_POINTER_SIZE);
}
QT_END_NAMESPACE
#endif
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