private TypeMatcher makeTypeMatcherHelper(ParseTreeNode node, IScene scene)
{
string strVal = node.ChildNodes[0].Token.ValueString;
if (grammar.Constants.Constants.ContainsKey(strVal)) Game.CurrentGame.Die("Invalid use of the term " + strVal);
if (node.Term == grammar.IsType)
return new PrototypeTypeMatcher(scene.GetOfPrototype(strVal, false));
return new PrototypeTypeMatcher(scene.GetOfPrototype(strVal, true));
}