/// <summary> 读取数组 /// </summary> /// <param name="reader"></param> /// <param name="type"></param> /// <returns></returns> private IList ReadArray(UnsafeJsonReader reader, Type type) { if (type.IsArray) { var eletype = type.GetElementType(); ArrayList list = new ArrayList(); FillList(list, Nullable.GetUnderlyingType(eletype) ?? eletype, reader); return(list.ToArray(eletype)); } else if (type == typeof(object)) { ArrayList list = new ArrayList(); FillList(list, typeof(object), reader); return(list.ToArray(typeof(object))); } else { var st = GenericCollection.GetList(type); if (st == null) { ThrowCastException("[]", type); } else if (st.Init == null) { ThrowNoConstructor(type); } var list = (IList)st.Init(); FillList(list, st.ElementType, reader); return(list); } }
/// <summary> 读取对象 /// </summary> /// <param name="reader"></param> /// <param name="type"></param> /// <returns></returns> private object ReadObject(UnsafeJsonReader reader, Type type) { object obj; if (type.GetInterface("System.Collections.IDictionary") == typeof(IDictionary)) { var st = GenericCollection.GetDict(type); if (st.Init == null) { ThrowNoConstructor(type); } obj = st.Init(); FillDictionary((IDictionary)obj, st.KeyType, st.ElementType, reader); return(obj); } else if (type == typeof(object)) { obj = new Dictionary <string, object>(); FillDictionary((IDictionary)obj, typeof(string), typeof(object), reader); return(obj); } else { var lit = ZTReflector.Cache(type, true); obj = lit.NewObject(); FillObject(obj, lit, reader); return(obj); } }
private void FillObject(object obj, ZTReflector lit, UnsafeJsonReader reader) { if (reader.Current == '}') { return; } if (obj is IDictionary) { var st = GenericCollection.GetDict(obj.GetType()); FillDictionary((IDictionary)obj, st.KeyType, st.ElementType, reader); } else { while (true) { var key = ReadKey(reader); //获取Key var prop = lit.Properties[key]; //得到对象属性 if (prop == null || prop.CanWrite == false) //如果属性不存在或不可写 { SkipValue(reader); //跳过Json中的值 } else { object val = ReadValue(reader, prop.MemberType); //得到值 prop.TrySetValue(obj, val); //赋值 } if (reader.SkipChar(',') == false) { return; } } } }
private void FillObject(object obj, ZTReflector lit, string json) { if (json == null || json.Length == 0) { return; } unsafe { fixed(char *p = json) { UnsafeJsonReader reader = new UnsafeJsonReader(p, json.Length); if (reader.IsEnd()) { return; } if (reader.Current == '{') { reader.MoveNext(); FillObject(obj, lit, reader); if (reader.Current != '}') { ThrowMissingCharException('}'); } } else if (reader.Current == '[') { reader.MoveNext(); var st = GenericCollection.GetList(obj.GetType()); if (st == null) { ThrowNoIList(obj.GetType()); } FillList((IList)obj, st.ElementType, reader); if (reader.Current != ']') { ThrowMissingCharException(']'); } } else { ThrowException("起始字符:" + reader.Current); } reader.MoveNext(); if (reader.IsEnd()) { reader.Dispose(); } else { ThrowException("错误的结束字符:" + reader.Current); } } } }
/// <summary> 读取一个值对象 /// </summary> /// <param name="reader"></param> /// <param name="type"></param> /// <returns></returns> private object ReadValue(UnsafeJsonReader reader, Type type) { if (reader.IsEnd()) { ThrowException("字符串意外结束!"); } var c = reader.Current; switch (c) { case '[': reader.MoveNext(); var array = ReadArray(reader, type); if (reader.Current != ']') { ThrowException("缺少闭合的 ]"); } reader.MoveNext(); return(array); case '{': reader.MoveNext(); var obj = ReadObject(reader, type); if (reader.Current != '}') { ThrowException("缺少闭合的 }"); } reader.MoveNext(); return(obj); case '"': case '\'': { if (type == typeof(DateTime)) { return(reader.ReadDateTime()); } return(ParseString(reader, type)); } default: { object val = reader.ReadConsts(); if (val == null) { return(null); } if (type.IsInstanceOfType(val) == false) { val = Convert.ChangeType(val, type); } return(val); } } }
/// <summary> 跳过一个键 /// </summary> /// <param name="reader"></param> private void SkipKey(UnsafeJsonReader reader) { if (reader.Current == '"' || reader.Current == '\'') { reader.SkipString(); } else { reader.SkipWord(); } reader.SkipChar(':'); }
/// <summary> 跳过一个值 /// </summary> /// <param name="reader"></param> private void SkipValue(UnsafeJsonReader reader) { reader.SkipWhiteChar(); switch (reader.Current) { case '[': reader.MoveNext(); if (reader.SkipChar(']')) { return; } do { SkipValue(reader); } while (reader.SkipChar(',')); if (reader.Current != ']') { ThrowException("缺少闭合的 ]"); } reader.MoveNext(); break; case '{': reader.MoveNext(); if (reader.SkipChar('}')) { return; } do { ReadKey(reader); SkipValue(reader); } while (reader.SkipChar(',')); if (reader.Current != '}') { ThrowException("缺少闭合的 }"); } reader.MoveNext(); break; case '"': case '\'': reader.SkipString(); break; default: reader.ReadConsts(); break; } }
private void FillList(IList list, Type elementType, UnsafeJsonReader reader) { while (true) { reader.SkipWhiteChar(); if (reader.Current == ']') { return; } object val = ReadValue(reader, elementType); //得到值 list.Add(val); //赋值 if (reader.SkipChar(',') == false) //跳过,号 { return; //失败,终止方法 } } }
/// <summary> 获取一个键 /// </summary> /// <param name="reader"></param> /// <returns></returns> private string ReadKey(UnsafeJsonReader reader) { reader.SkipWhiteWord(); string key; if (reader.Current == '"' || reader.Current == '\'') { key = reader.ReadString(); } else { key = reader.ReadWord(); } if (reader.SkipChar(':') == false) //跳过:号 { ThrowMissingCharException(':'); //失败,终止方法 } return(key); }
/// <summary> 将字符串解析为指定类型 /// </summary> /// <param name="str"></param> /// <param name="type"></param> /// <returns></returns> private object ParseString(UnsafeJsonReader reader, Type type) { char quot; string str; var typecode = Type.GetTypeCode(type); if ((typecode >= TypeCode.SByte && typecode <= TypeCode.Decimal) || typecode == TypeCode.Boolean) { if (type.IsSubclassOf(typeof(Enum))) { return(Enum.Parse(type, reader.ReadString())); } quot = reader.Current; if (quot != '\"' && quot != '\'') { ThrowMissingCharException(quot); } if (reader.SkipChar(quot) == false) { ThrowMissingCharException(quot); } var val = Convert.ChangeType(reader.ReadConsts(), type); if (reader.SkipChar(quot) == false) { ThrowMissingCharException(quot); } return(val); } switch (typecode) { case TypeCode.DateTime: return(reader.ReadDateTime()); case TypeCode.Object: str = reader.ReadString(); if (type == typeof(Guid)) { try { if (str.Length > 30) { return(new Guid(str)); } else { return(new Guid(Convert.FromBase64String(str))); } } catch { return(Guid.Empty); } } else if (type == typeof(Object)) { return(str); } throw new Exception(); case TypeCode.Char: return(Char.Parse(reader.ReadString())); case TypeCode.String: return(reader.ReadString()); case TypeCode.DBNull: str = reader.ReadString(); if (str.Length == 0 || str == "null" || str == "undefined" || string.IsNullOrEmpty(str)) { return(DBNull.Value); } throw new Exception(); default: return(Convert.ChangeType(reader.ReadString(), type)); } }
private void FillDictionary(IDictionary dict, Type keyType, Type elementType, UnsafeJsonReader reader) { if (reader.Current == '}') { return; } if (keyType == typeof(string) || keyType == typeof(object)) { while (true) { string key = ReadKey(reader); //获取Key object val = ReadValue(reader, elementType); //得到值 dict[key] = val; if (reader.SkipChar(',') == false) //跳过,号 { return; //失败,终止方法 } } } else { while (true) { string skey = ReadKey(reader); //获取Key object key = Convert.ChangeType(skey, keyType); object val = ReadValue(reader, elementType); //得到值 dict[key] = val; if (reader.SkipChar(',') == false) //跳过,号 { return; //失败,终止方法 } } } }