private bool Filter(ValueCopyer valueCopyer)
{
var basicType = valueCopyer.GetBasicType();
if ((options & JsonFormatterOptions.MultiReferencingNull) != 0 && (basicType == BasicTypes.Array || basicType == BasicTypes.Object))
{
var dataReader = (IDataReader)valueCopyer.Value;
var objectId = GetObjectId(dataReader);
if (objectId != -1)
{
valueCopyer.DirectWrite(null);
basicType = BasicTypes.Null;
}
}
if ((options & JsonFormatterOptions.IgnoreNull) != 0)
{
if (basicType == BasicTypes.Null)
{
return(false);
}
}
if ((options & JsonFormatterOptions.IgnoreZero) != 0)
{
switch (valueCopyer.GetBasicType())
{
case BasicTypes.SByte:
return(valueCopyer.ReadSByte() != 0);
case BasicTypes.Int16:
return(valueCopyer.ReadInt16() != 0);
case BasicTypes.Int32:
return(valueCopyer.ReadInt32() != 0);
case BasicTypes.Int64:
return(valueCopyer.ReadInt64() != 0);
case BasicTypes.Byte:
return(valueCopyer.ReadByte() != 0);
case BasicTypes.UInt16:
return(valueCopyer.ReadUInt16() != 0);
case BasicTypes.UInt32:
return(valueCopyer.ReadUInt32() != 0);
case BasicTypes.UInt64:
return(valueCopyer.ReadUInt64() != 0);
case BasicTypes.Single:
return(valueCopyer.ReadSingle() != 0);
case BasicTypes.Double:
return(valueCopyer.ReadDouble() != 0);
case BasicTypes.Decimal:
return(valueCopyer.ReadDecimal() != 0);
}
}
if ((options & JsonFormatterOptions.IgnoreEmptyString) != 0)
{
switch (valueCopyer.GetBasicType())
{
case BasicTypes.String:
return(valueCopyer.ReadString() != "");
}
}
return(true);
}
/// <summary>
/// 获取值的基础类型枚举。
/// </summary>
/// <returns>返回一个 BasicTypes 枚举值。</returns>
public BasicTypes GetBasicType()
{
dataReader.OnReadValue(key, valueCopyer);
return(valueCopyer.GetBasicType());
}