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 60 QT_BEGIN_NAMESPACE 61 62 namespace QV4 { 63 64 namespace Heap { 65 66 struct JsonObject : Object { 67 void init(); 68 }; 69 70 } 71 72 struct ObjectItem { 73 const QV4::Object *o; ObjectItemObjectItem74 ObjectItem(const QV4::Object *o) : o(o) {} 75 }; 76 77 inline bool operator ==(const ObjectItem &a, const ObjectItem &b) 78 { return a.o->d() == b.o->d(); } 79 80 inline int qHash(const ObjectItem &i, uint seed = 0) 81 { return ::qHash((void *)i.o->d(), seed); } 82 83 struct JsonObject : Object { 84 Q_MANAGED_TYPE(JsonObject) 85 V4_OBJECT2(JsonObject, Object) 86 private: 87 88 typedef QSet<ObjectItem> V4ObjectSet; 89 public: 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 toJsonValueJsonObject98 static inline QJsonValue toJsonValue(const QV4::Value &value) 99 { V4ObjectSet visitedObjects; return toJsonValue(value, visitedObjects); } toJsonObjectJsonObject100 static inline QJsonObject toJsonObject(const QV4::Object *o) 101 { V4ObjectSet visitedObjects; return toJsonObject(o, visitedObjects); } toJsonArrayJsonObject102 static inline QJsonArray toJsonArray(const QV4::ArrayObject *a) 103 { V4ObjectSet visitedObjects; return toJsonArray(a, visitedObjects); } 104 105 private: 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 }; 111 112 class JsonParser 113 { 114 public: 115 JsonParser(ExecutionEngine *engine, const QChar *json, int length); 116 117 ReturnedValue parse(QJsonParseError *error); 118 119 private: 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 } 140 141 QT_END_NAMESPACE 142 143 #endif 144 145