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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDECLARATIVEEXPRESSION_P_H
#define QDECLARATIVEEXPRESSION_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 "qdeclarativeexpression.h"
#include "private/qdeclarativeengine_p.h"
#include "private/qdeclarativeguard_p.h"
#include <QtScript/qscriptvalue.h>
QT_BEGIN_NAMESPACE
class QDeclarativeAbstractExpression
{
public:
QDeclarativeAbstractExpression();
virtual ~QDeclarativeAbstractExpression();
bool isValid() const;
QDeclarativeContextData *context() const;
void setContext(QDeclarativeContextData *);
virtual void refresh();
private:
friend class QDeclarativeContext;
friend class QDeclarativeContextData;
friend class QDeclarativeContextPrivate;
QDeclarativeContextData *m_context;
QDeclarativeAbstractExpression **m_prevExpression;
QDeclarativeAbstractExpression *m_nextExpression;
};
class QDeclarativeDelayedError
{
public:
inline QDeclarativeDelayedError() : nextError(0), prevError(0) {}
inline ~QDeclarativeDelayedError() { removeError(); }
QDeclarativeError error;
bool addError(QDeclarativeEnginePrivate *);
inline void removeError() {
if (!prevError) return;
if (nextError) nextError->prevError = prevError;
*prevError = nextError;
nextError = 0;
prevError = 0;
}
private:
QDeclarativeDelayedError *nextError;
QDeclarativeDelayedError **prevError;
};
class QDeclarativeExpressionData : public QDeclarativeAbstractExpression, public QDeclarativeDelayedError, public QDeclarativeRefCount
{
public:
QDeclarativeExpressionData();
virtual ~QDeclarativeExpressionData();
QDeclarativeExpressionPrivate *q;
QDeclarativeRefCount *dataRef;
QString expression;
bool expressionFunctionValid:1;
bool expressionRewritten:1;
QScriptValue expressionFunction;
QScriptValue expressionContext;
QObject *me;
bool trackChange;
bool isShared;
QString url; // This is a QString for a reason. QUrls are slooooooow...
int line;
QDeclarativeNotifierEndpoint *guardList;
int guardListLength;
};
class QDeclarativeExpression;
class QString;
class QDeclarativeExpressionPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QDeclarativeExpression)
public:
QDeclarativeExpressionPrivate();
QDeclarativeExpressionPrivate(QDeclarativeExpressionData *);
~QDeclarativeExpressionPrivate();
void init(QDeclarativeContextData *, const QString &, QObject *);
void init(QDeclarativeContextData *, void *, QDeclarativeRefCount *, QObject *, const QString &, int);
QDeclarativeExpressionData *data;
QVariant value(QObject *secondaryScope = 0, bool *isUndefined = 0);
QVariant evalQtScript(QObject *secondaryScope, bool *isUndefined = 0);
void updateGuards(const QPODVector<QDeclarativeEnginePrivate::CapturedProperty> &properties);
void clearGuards();
static QDeclarativeExpressionPrivate *get(QDeclarativeExpression *expr) {
return static_cast<QDeclarativeExpressionPrivate *>(QObjectPrivate::get(expr));
}
static QDeclarativeExpression *get(QDeclarativeExpressionPrivate *expr) {
return expr->q_func();
}
virtual void emitValueChanged();
static void exceptionToError(QScriptEngine *, QDeclarativeError &);
static QScriptValue evalInObjectScope(QDeclarativeContextData *, QObject *, const QString &, QScriptValue * = 0);
static QScriptValue evalInObjectScope(QDeclarativeContextData *, QObject *, const QScriptProgram &, QScriptValue * = 0);
};
QT_END_NAMESPACE
#endif // QDECLARATIVEEXPRESSION_P_H
|
