//Note:Json standard only support 6 data types (Null, Boolean, Number, String, Object and Array)
public static string ToJsonString(this object instance)
{
if (instance == null)
{
return(JsonConstant.Null);
}
//Note:As the instance!=null, we don't need check Nullable<T>
Type t = instance.GetType();
//Note:before go to normal, check if the customized extend converter can handle it.
IExtendConverter cvt = ExtendConverter.Instance();
if (cvt.CanConvert(t))
{
try
{
return(cvt.ToJsonString(instance));
}
catch (Exception ex)
{
throw ex.CreateWrapException <JsonExtendConverterException>();
}
}
TypeCode code = Type.GetTypeCode(t);
switch (code)
{
case TypeCode.Boolean:
return(instance.ToString().ToLower());
case TypeCode.Int16:
case TypeCode.Int32:
case TypeCode.Int64:
case TypeCode.UInt16:
case TypeCode.UInt32:
case TypeCode.UInt64:
case TypeCode.Decimal:
case TypeCode.Double:
case TypeCode.Single:
case TypeCode.Byte:
case TypeCode.SByte:
return(instance.ToString());
case TypeCode.String:
case TypeCode.Char:
return(((string)instance).Bracketing(StringPair.DoubleQuote));
}
StringBuilder str = new StringBuilder();
if (!t.IsArray)//Note:Object
{
IReflector r = Reflector.Bind(instance, ReflectorPolicy.InstancePublicIgnoreCase);
foreach (PropertyInfo propertyInfo in r.FindAllProperties())
{
if (propertyInfo.Name == "Item")//Extend:Item is special name for indexer, not support currently.
{
continue;
}
string name = char.ToLower(propertyInfo.Name[0]) + propertyInfo.Name.Substring(1);
str.Append(name.Bracketing(StringPair.DoubleQuote));
str.Append(JsonConstant.Colon);
str.Append(r.GetPropertyValue(propertyInfo.Name).ToJsonString());
str.Append(JsonConstant.Comma);
}
str.RemoveEnd(JsonConstant.Comma);
str.Bracketing(StringPair.CurlyBracket);
return(str.ToString());
}
else//Note:Array
{
Array array = instance as Array;
if (array.Length > 0)
{
foreach (object element in array)
{
str.Append(element.ToJsonString());
str.Append(JsonConstant.Comma);
}
str.RemoveEnd(JsonConstant.Comma);
}
str.Bracketing(StringPair.SquareBracket);
return(str.ToString());
}
}
