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Diffstat (limited to 'src/v4/qv4lookup.h')
-rw-r--r-- | src/v4/qv4lookup.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/v4/qv4lookup.h b/src/v4/qv4lookup.h new file mode 100644 index 00000000..d670d8e5 --- /dev/null +++ b/src/v4/qv4lookup.h @@ -0,0 +1,126 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the V4VM 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#ifndef QV4LOOKUP_H +#define QV4LOOKUP_H + +#include "qv4global.h" +#include "qv4runtime.h" +#include "qv4engine.h" +#include "qv4context.h" +#include "qv4object.h" +#include "qv4internalclass.h" + +QT_BEGIN_NAMESPACE + +namespace QQmlJS { +namespace VM { + +struct Lookup { + enum { Size = 4 }; + InternalClass *classList[Size]; + int level; + uint index; + String *name; + + static void lookupName(Lookup *l, ExecutionContext *ctx, Value *result, const Value &object); + + Property *lookup(Object *obj, PropertyAttributes *attrs) { + int i = 0; + while (i < level && obj && obj->internalClass == classList[i]) { + obj = obj->prototype; + ++i; + } + + if (index != UINT_MAX && obj->internalClass == classList[i]) { + *attrs = obj->internalClass->propertyData.at(index); + return obj->memberData + index; + } + + while (i < Size && obj) { + classList[i] = obj->internalClass; + + index = obj->internalClass->find(name); + if (index != UINT_MAX) { + level = i; + *attrs = obj->internalClass->propertyData.at(index); + return obj->memberData + index; + } + + obj = obj->prototype; + ++i; + } + level = i; + + while (obj) { + index = obj->internalClass->find(name); + if (index != UINT_MAX) { + *attrs = obj->internalClass->propertyData.at(index); + return obj->memberData + index; + } + + obj = obj->prototype; + } + return 0; + } + + Property *setterLookup(Object *o, PropertyAttributes *attrs) { + if (o->internalClass == classList[0]) { + *attrs = o->internalClass->propertyData[index]; + return o->memberData + index; + } + + uint idx = o->internalClass->find(name); + if (idx != UINT_MAX) { + classList[0] = o->internalClass; + index = idx; + *attrs = o->internalClass->propertyData[index]; + return o->memberData + index; + } + return 0; + } +}; + +} +} + +QT_END_NAMESPACE + +#endif |