1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtQml module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39#ifndef QV4JSONOBJECT_H
40#define QV4JSONOBJECT_H
41
42//
43// W A R N I N G
44// -------------
45//
46// This file is not part of the Qt API. It exists purely as an
47// implementation detail. This header file may change from version to
48// version without notice, or even be removed.
49//
50// We mean it.
51//
52
53#include "qv4object_p.h"
54#include <qjsonarray.h>
55#include <qjsonobject.h>
56#include <qjsonvalue.h>
57#include <qjsondocument.h>
58#include <qhash.h>
59
60QT_BEGIN_NAMESPACE
61
62namespace QV4 {
63
64namespace Heap {
65
66struct JsonObject : Object {
67 void init();
68};
69
70}
71
72struct ObjectItem {
73 const QV4::Object *o;
74 ObjectItem(const QV4::Object *o) : o(o) {}
75};
76
77inline bool operator ==(const ObjectItem &a, const ObjectItem &b)
78{ return a.o->d() == b.o->d(); }
79
80inline int qHash(const ObjectItem &i, uint seed = 0)
81{ return ::qHash(t: (void *)i.o->d(), seed); }
82
83struct JsonObject : Object {
84 Q_MANAGED_TYPE(JsonObject)
85 V4_OBJECT2(JsonObject, Object)
86private:
87
88 typedef QSet<ObjectItem> V4ObjectSet;
89public:
90
91 static ReturnedValue method_parse(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
92 static ReturnedValue method_stringify(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
93
94 static ReturnedValue fromJsonValue(ExecutionEngine *engine, const QJsonValue &value);
95 static ReturnedValue fromJsonObject(ExecutionEngine *engine, const QJsonObject &object);
96 static ReturnedValue fromJsonArray(ExecutionEngine *engine, const QJsonArray &array);
97
98 static inline QJsonValue toJsonValue(const QV4::Value &value)
99 { V4ObjectSet visitedObjects; return toJsonValue(value, visitedObjects); }
100 static inline QJsonObject toJsonObject(const QV4::Object *o)
101 { V4ObjectSet visitedObjects; return toJsonObject(o, visitedObjects); }
102 static inline QJsonArray toJsonArray(const QV4::ArrayObject *a)
103 { V4ObjectSet visitedObjects; return toJsonArray(a, visitedObjects); }
104
105private:
106 static QJsonValue toJsonValue(const QV4::Value &value, V4ObjectSet &visitedObjects);
107 static QJsonObject toJsonObject(const Object *o, V4ObjectSet &visitedObjects);
108 static QJsonArray toJsonArray(const ArrayObject *a, V4ObjectSet &visitedObjects);
109
110};
111
112class JsonParser
113{
114public:
115 JsonParser(ExecutionEngine *engine, const QChar *json, int length);
116
117 ReturnedValue parse(QJsonParseError *error);
118
119private:
120 inline bool eatSpace();
121 inline QChar nextToken();
122
123 ReturnedValue parseObject();
124 ReturnedValue parseArray();
125 bool parseMember(Object *o);
126 bool parseString(QString *string);
127 bool parseValue(Value *val);
128 bool parseNumber(Value *val);
129
130 ExecutionEngine *engine;
131 const QChar *head;
132 const QChar *json;
133 const QChar *end;
134
135 int nestingLevel;
136 QJsonParseError::ParseError lastError;
137};
138
139}
140
141QT_END_NAMESPACE
142
143#endif
144
145

source code of qtdeclarative/src/qml/jsruntime/qv4jsonobject_p.h