/// <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));
}
}
