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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 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 QV4GLOBAL_H
#define QV4GLOBAL_H
#include <QtCore/qglobal.h>
#include <qtqmlglobal.h>
#if defined(Q_CC_MSVC)
namespace std {
inline bool isinf(double d) { return !_finite(d) && !_isnan(d); }
inline bool isnan(double d) { return !!_isnan(d); }
inline bool isfinite(double d) { return _finite(d); }
inline bool signbit(double d) { return _copysign(1.0, d) < 0; }
} // namespace std
inline double trunc(double d) { return d > 0 ? floor(d) : ceil(d); }
#endif
QT_BEGIN_NAMESPACE
namespace QV4 {
class MemoryManager;
struct String;
struct Object;
struct ObjectPrototype;
struct ObjectIterator;
struct ExecutionContext;
struct ScriptFunction;
struct InternalClass;
struct Property;
struct BooleanObject;
struct NumberObject;
struct StringObject;
struct ArrayObject;
struct DateObject;
struct FunctionObject;
struct ErrorObject;
struct ArgumentsObject;
struct Managed;
struct Lookup;
struct ExecutionEngine;
struct QObjectWrapper;
enum PropertyFlag {
Attr_Data = 0,
Attr_Accessor = 0x1,
Attr_NotWritable = 0x2,
Attr_NotEnumerable = 0x4,
Attr_NotConfigurable = 0x8,
Attr_ReadOnly = Attr_NotWritable|Attr_NotEnumerable|Attr_NotConfigurable,
Attr_Invalid = 0xff
};
Q_DECLARE_FLAGS(PropertyFlags, PropertyFlag);
Q_DECLARE_OPERATORS_FOR_FLAGS(PropertyFlags);
struct PropertyAttributes
{
union {
uchar m_all;
struct {
uchar m_flags : 4;
uchar m_mask : 4;
};
struct {
uchar m_type : 1;
uchar m_writable : 1;
uchar m_enumerable : 1;
uchar m_configurable : 1;
uchar type_set : 1;
uchar writable_set : 1;
uchar enumerable_set : 1;
uchar configurable_set : 1;
};
};
enum Type {
Data = 0,
Accessor = 1,
Generic = 2
};
PropertyAttributes() : m_all(0) {}
PropertyAttributes(PropertyFlag f) : m_all(0) {
if (f != Attr_Invalid) {
setType(f & Attr_Accessor ? Accessor : Data);
if (!(f & Attr_Accessor))
setWritable(!(f & Attr_NotWritable));
setEnumerable(!(f & Attr_NotEnumerable));
setConfigurable(!(f & Attr_NotConfigurable));
}
}
PropertyAttributes(PropertyFlags f) : m_all(0) {
if (f != Attr_Invalid) {
setType(f & Attr_Accessor ? Accessor : Data);
if (!(f & Attr_Accessor))
setWritable(!(f & Attr_NotWritable));
setEnumerable(!(f & Attr_NotEnumerable));
setConfigurable(!(f & Attr_NotConfigurable));
}
}
PropertyAttributes(const PropertyAttributes &other) : m_all(other.m_all) {}
PropertyAttributes & operator=(const PropertyAttributes &other) { m_all = other.m_all; return *this; }
void setType(Type t) { m_type = t; type_set = true; }
Type type() const { return type_set ? (Type)m_type : Generic; }
bool isData() const { return type() == PropertyAttributes::Data || writable_set; }
bool isAccessor() const { return type() == PropertyAttributes::Accessor; }
bool isGeneric() const { return type() == PropertyAttributes::Generic && !writable_set; }
bool hasType() const { return type_set; }
bool hasWritable() const { return writable_set; }
bool hasConfigurable() const { return configurable_set; }
bool hasEnumerable() const { return enumerable_set; }
void setWritable(bool b) { m_writable = b; writable_set = true; }
void setConfigurable(bool b) { m_configurable = b; configurable_set = true; }
void setEnumerable(bool b) { m_enumerable = b; enumerable_set = true; }
void resolve() { m_mask = 0xf; if (m_type == Accessor) { m_writable = false; writable_set = false; } }
bool isWritable() const { return m_type != Data || m_writable; }
bool isEnumerable() const { return m_enumerable; }
bool isConfigurable() const { return m_configurable; }
void clearType() { m_type = Data; type_set = false; }
void clearWritable() { m_writable = false; writable_set = false; }
void clearEnumerable() { m_enumerable = false; enumerable_set = false; }
void clearConfigurable() { m_configurable = false; configurable_set = false; }
void clear() { m_all = 0; }
bool isEmpty() const { return !m_all; }
uint flags() const { return m_flags; }
bool operator==(PropertyAttributes other) {
return m_all == other.m_all;
}
bool operator!=(PropertyAttributes other) {
return m_all != other.m_all;
}
};
}
Q_DECLARE_TYPEINFO(QV4::PropertyAttributes, Q_PRIMITIVE_TYPE);
QT_END_NAMESPACE
#endif // QV4GLOBAL_H
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