private Rule(StatementType name, Production production, Collect collect, Func <dynamic[], dynamic> gathererFn)
{
Name = name;
Production = production;
Collect = collect;
GathererFn = gathererFn ?? (p => null);
if (!(Production[0] is Production.Epsilon) && gathererFn == null)
{
throw new Exception($"no gatherer for non-epsilon rule {this}");
}
}
public static Rule Of(StatementType name, Production production, Collect collect,
Func <dynamic[], dynamic> gathererFn)
{
return(new Rule(name, production, collect, gathererFn));
}
