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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