protected override void ProcessArg(Evaluator evaluater, Result[] argArray)
{
base.ProcessArg(evaluater, argArray);
Type type = argArray[0].Type;
Type type2 = argArray[1].Type;
if ((type != null) || (type2 != null))
{
if (type == null)
{
if (type2.IsValueType)
{
throw new InvalidCastException(string.Format("from null to {0}", type2.Name));
}
if (type2 != typeof(string))
{
throw new InvalidCastException(string.Format("from null to {0}", type2.Name));
}
argArray[0].Type = typeof(string);
}
else if (type2 == null)
{
if (type.IsValueType)
{
throw new InvalidCastException(string.Format("from null to {0}", type.Name));
}
if (type != typeof(string))
{
throw new InvalidCastException(string.Format("from null to {0}", type.Name));
}
argArray[1].Type = typeof(string);
}
else
{
int num;
if (!BinaryHelper.ComparePrimitiveType(type, type2, out num))
{
throw new InvalidCastException(string.Format("from {1} to {0}", type.Name, type2.Name));
}
if (num > 0)
{
argArray[1].Value = ConvertHelper.ChangeType(argArray[1].Value, type);
}
else if (num < 0)
{
argArray[0].Value = ConvertHelper.ChangeType(argArray[0].Value, type2);
}
}
}
}
protected override bool IsEvalableType(Type type)
{
return((type == null) || (BinaryHelper.IsPrimitiveType(type) || (type == typeof(string))));
}
protected override bool IsEvalableType(Type type)
{
return(BinaryHelper.IsPrimitiveType(type));
}