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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QFASTMETABUILDER_P_H
#define QFASTMETABUILDER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of moc. This header file may change from version to version without notice,
// or even be removed.
//
// We mean it.
//
#include <QtCore/qglobal.h>
#include <QtCore/qmetatype.h>
#include <QtCore/qmetaobject.h>
#include <private/qhashedstring_p.h>
QT_BEGIN_NAMESPACE
struct QMetaObject;
class QFastMetaBuilder
{
public:
QFastMetaBuilder();
~QFastMetaBuilder();
struct StringRef {
public:
inline StringRef();
inline StringRef(const StringRef &);
inline StringRef &operator=(const StringRef &);
inline void load(const QHashedStringRef &);
inline void load(const QByteArray &);
inline void load(const char *);
inline bool isEmpty() const;
inline QFastMetaBuilder *builder() const;
inline int index() const;
inline char *data();
inline int length() const;
inline void loadByteArrayData();
private:
friend class QFastMetaBuilder;
QFastMetaBuilder *_b;
int _i;
int _o;
int _l;
};
StringRef newString(int length);
// Returns class name
StringRef init(int classNameLength,
int propertyCount, int methodCount,
int signalCount, int classInfoCount,
int paramDataSize, int *paramIndex);
void setClassInfo(int index, const StringRef &key, const StringRef &value);
enum PropertyFlag {
None = 0x00000000,
Writable = 0x00000002,
Resettable = 0x00000004,
Constant = 0x00000400,
Final = 0x00000800
};
void setProperty(int index, const StringRef &name, int type,
PropertyFlag flags, int notifySignal = -1);
void setMethod(int index, const StringRef &name, int paramIndex, int argc = 0,
const int *types = 0, const StringRef *parameterNames = 0,
QMetaType::Type type = QMetaType::Void);
void setSignal(int index, const StringRef &name, int paramIndex, int argc = 0,
const int *types = 0, const StringRef *parameterNames = 0,
QMetaType::Type type = QMetaType::Void);
int metaObjectIndexForSignal(int) const;
int metaObjectIndexForMethod(int) const;
QByteArray toData() const {
if (m_stringCountLoaded == m_stringCount - 1) {
// zero-string is lazily loaded last
const_cast<StringRef &>(m_zeroString).loadByteArrayData();
}
Q_ASSERT(m_stringCountLoaded == m_stringCount);
return m_data;
}
static void fromData(QMetaObject *, const QMetaObject *parent, const QByteArray &);
private:
friend struct StringRef;
QByteArray m_data;
StringRef m_zeroString;
void allocateStringData();
QByteArrayData *m_stringData;
int m_stringCount;
int m_stringDataLength;
int m_stringCountAllocated;
int m_stringCountLoaded;
};
QFastMetaBuilder::StringRef::StringRef()
: _b(0), _i(0), _o(0), _l(0)
{
}
QFastMetaBuilder::StringRef::StringRef(const StringRef &o)
: _b(o._b), _i(o._i), _o(o._o), _l(o._l)
{
}
QFastMetaBuilder::StringRef &QFastMetaBuilder::StringRef::operator=(const StringRef &o)
{
_b = o._b;
_i = o._i;
_o = o._o;
_l = o._l;
return *this;
}
bool QFastMetaBuilder::StringRef::isEmpty() const
{
return _l == 0;
}
QFastMetaBuilder *QFastMetaBuilder::StringRef::builder() const
{
return _b;
}
int QFastMetaBuilder::StringRef::index() const
{
return _i;
}
char *QFastMetaBuilder::StringRef::data()
{
Q_ASSERT(_b);
if (_b->m_stringCountAllocated < _b->m_stringCount)
_b->allocateStringData();
return reinterpret_cast<char *>(&_b->m_stringData[_b->m_stringCount]) + _o;
}
int QFastMetaBuilder::StringRef::length() const
{
return _l;
}
void QFastMetaBuilder::StringRef::load(const QHashedStringRef &str)
{
Q_ASSERT(str.utf8length() == _l);
str.writeUtf8(data());
*(data() + _l) = 0;
loadByteArrayData();
}
void QFastMetaBuilder::StringRef::load(const QByteArray &str)
{
Q_ASSERT(str.length() == _l);
strcpy(data(), str.constData());
loadByteArrayData();
}
void QFastMetaBuilder::StringRef::load(const char *str)
{
Q_ASSERT(strlen(str) == (uint)_l);
strcpy(data(), str);
loadByteArrayData();
}
void QFastMetaBuilder::StringRef::loadByteArrayData()
{
if (_b->m_stringCountAllocated < _b->m_stringCount)
_b->allocateStringData();
Q_ASSERT(_b->m_stringCountLoaded < _b->m_stringCount);
int offsetofCstrings = _b->m_stringCount * sizeof(QByteArrayData);
qptrdiff offset = offsetofCstrings + _o - _i * sizeof(QByteArrayData);
const QByteArrayData bad = { Q_REFCOUNT_INITIALIZE_STATIC, _l, 0, 0, offset };
memcpy(&_b->m_stringData[_i], &bad, sizeof(QByteArrayData));
++_b->m_stringCountLoaded;
}
QT_END_NAMESPACE
#endif // QFASTMETABUILDER_P_H
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