1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMLBASICSCRIPT_P_H
#define QMLBASICSCRIPT_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 <QtCore/QList>
#include <QtCore/QByteArray>
#include <QtCore/QVariant>
#include <private/qmlparser_p.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class QmlRefCount;
class QmlContext;
class QmlBasicScriptPrivate;
class QmlBasicScriptNodeCache;
class QmlBasicScript
{
public:
QmlBasicScript();
QmlBasicScript(const char *, QmlRefCount * = 0);
~QmlBasicScript();
// Always 4-byte aligned
const char *compileData() const;
unsigned int compileDataSize() const;
QByteArray expression() const;
struct Expression
{
QmlParser::Object *component;
QmlParser::Object *context;
QmlParser::Property *property;
QmlParser::Variant expression;
QHash<QString, QPair<QmlParser::Object *, int> > ids;
};
bool compile(const Expression &);
bool isValid() const;
void clear();
void dump();
void *newScriptState();
void deleteScriptState(void *);
enum CacheState { NoChange, Incremental, Reset };
QVariant run(QmlContext *, void *, CacheState *);
// Optimization opportunities
bool isSingleLoad() const;
QByteArray singleLoadTarget() const;
private:
int flags;
QmlBasicScriptPrivate *d;
QmlRefCount *rc;
void clearCache(void *);
void guard(QmlBasicScriptNodeCache &);
bool valid(QmlBasicScriptNodeCache &, QObject *);
};
class QmlContextPrivate;
class QDebug;
class QmlBasicScriptNodeCache
{
public:
QObject *object;
const QMetaObject *metaObject;
enum { Invalid,
Core,
Attached,
SignalProperty,
Variant
} type;
union {
int core;
QObject *attached;
QmlContextPrivate *context;
};
int coreType;
int contextIndex;
bool isValid() const { return type != Invalid; }
bool isCore() const { return type == Core; }
bool isVariant() const { return type == Variant; }
void clear();
QVariant value(const char *) const;
};
QDebug operator<<(QDebug, const QmlBasicScriptNodeCache &);
QT_END_NAMESPACE
QT_END_HEADER
#endif // QMLBASICSCRIPT_P_H
|
