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/****************************************************************************
**
** 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 QV4STRING_H
#define QV4STRING_H
#include <QtCore/qstring.h>
#include "qv4managed.h"
QT_BEGIN_NAMESPACE
namespace QQmlJS {
namespace VM {
struct ExecutionEngine;
struct String : public Managed {
enum StringType {
StringType_Unknown,
StringType_Regular,
StringType_UInt,
StringType_ArrayIndex
};
String(const QString &text)
: _text(text), stringHash(UINT_MAX), identifier(UINT_MAX)
{ vtbl = &static_vtbl; type = Type_String; subtype = StringType_Unknown; }
~String() { _data = 0; }
inline bool isEqualTo(const String *other) const {
if (this == other)
return true;
if (hashValue() != other->hashValue())
return false;
if (identifier != UINT_MAX && identifier == other->identifier)
return true;
if (subtype >= StringType_UInt && subtype == other->subtype)
return true;
return toQString() == other->toQString();
}
inline bool compare(const String *other) {
return toQString() < other->toQString();
}
inline const QString &toQString() const {
return _text;
}
inline unsigned hashValue() const {
if (subtype == StringType_Unknown)
createHashValue();
return stringHash;
}
uint asArrayIndex() const {
if (subtype == StringType_Unknown)
createHashValue();
if (subtype == StringType_ArrayIndex)
return stringHash;
return UINT_MAX;
}
uint toUInt(bool *ok) const;
void makeIdentifier(const ExecutionContext *ctx) {
if (identifier != UINT_MAX)
return;
makeIdentifierImpl(ctx);
}
void makeIdentifierImpl(const ExecutionContext *ctx);
void createHashValue() const;
static uint createHashValue(const QChar *ch, int length);
QString _text;
mutable uint stringHash;
mutable uint identifier;
protected:
static void destroy(Managed *);
static Value get(Managed *m, ExecutionContext *ctx, String *name, bool *hasProperty);
static Value getIndexed(Managed *m, ExecutionContext *ctx, uint index, bool *hasProperty);
static void put(Managed *m, ExecutionContext *ctx, String *name, const Value &value);
static void putIndexed(Managed *m, ExecutionContext *ctx, uint index, const Value &value);
static PropertyAttributes query(Managed *m, ExecutionContext *ctx, String *name);
static PropertyAttributes queryIndexed(Managed *m, ExecutionContext *ctx, uint index);
static bool deleteProperty(Managed *m, ExecutionContext *ctx, String *name);
static bool deleteIndexedProperty(Managed *m, ExecutionContext *ctx, uint index);
static const ManagedVTable static_vtbl;
};
} // namespace VM
} // namespace QQmlJS
QT_END_NAMESPACE
#endif
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