public ReplaceRule(ParseBlock Block, List <Operator <T> > Operators, Dictionary <string, Generator <T> > Generators)
{
string[] def = Block.String.Split(new string[] { "=>" }, StringSplitOptions.None);
_Match = new MatchRule <T>(def[0], Operators, Generators);
_Replacement = new SingleGenerator <T>(def[1], Operators, Generators);
}