source: trunk/src/script/qscriptvalue.cpp@ 203

Last change on this file since 203 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.

File size: 47.7 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtScript module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
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23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
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28** GNU General Public License Usage
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30** General Public License version 3.0 as published by the Free Software
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40****************************************************************************/
41
42#include "qscriptvalue.h"
43
44#ifndef QT_NO_SCRIPT
45
46#include "qscriptvalue_p.h"
47#include "qscriptengine_p.h"
48#include "qscriptvalueimpl_p.h"
49#include "qscriptcontext_p.h"
50#include "qscriptmember_p.h"
51#include "qscriptobject_p.h"
52#include "qscriptclass.h"
53#include "qscriptclass_p.h"
54
55#include <QtCore/QDateTime>
56#include <QtCore/QRegExp>
57
58QT_BEGIN_NAMESPACE
59
60/*!
61 \since 4.3
62 \class QScriptValue
63
64 \brief The QScriptValue class acts as a container for the Qt Script data types.
65
66 \ingroup script
67 \mainclass
68
69 QScriptValue supports the types defined in the \l{ECMA-262}
70 standard: The primitive types, which are Undefined, Null, Boolean,
71 Number, and String; and the Object type. Additionally, Qt Script
72 has built-in support for QVariant, QObject and QMetaObject.
73
74 For the object-based types (including Date and RegExp), use the
75 newT() functions in QScriptEngine (e.g. QScriptEngine::newObject())
76 to create a QScriptValue of the desired type. For the primitive types,
77 use one of the QScriptValue constructor overloads.
78
79 The methods named isT() (e.g. isBool(), isUndefined()) can be
80 used to test if a value is of a certain type. The methods named
81 toT() (e.g. toBool(), toString()) can be used to convert a
82 QScriptValue to another type. You can also use the generic
83 qscriptvalue_cast() function.
84
85 Object values have zero or more properties which are themselves
86 QScriptValues. Use setProperty() to set a property of an object, and
87 call property() to retrieve the value of a property.
88
89 \snippet doc/src/snippets/code/src_script_qscriptvalue.cpp 0
90
91 Each property can have a set of attributes; these are specified as
92 the third (optional) argument to setProperty(). The attributes of a
93 property can be queried by calling the propertyFlags() function. The
94 following code snippet creates a property that cannot be modified by
95 script code:
96
97 \snippet doc/src/snippets/code/src_script_qscriptvalue.cpp 1
98
99 If you want to iterate over the properties of a script object, use
100 the QScriptValueIterator class.
101