Added support for null rules, works well.

include/ParseRule.h

@@ -26,6 +26,7 @@ class ParseRule {
 		void appendToRight(Symbol* appendee);
 
 		Symbol* getLeftSide();
+		void setRightSide(std::vector<Symbol*> &rightSide);
 		std::vector<Symbol*> getRightSide();
 		Symbol* getAtNextIndex();
 		Symbol* getAtIndex();

include/Parser.h

@@ -47,6 +47,11 @@ class Parser {
 
 		std::vector< State* > stateSets;
 
+		//The EOFSymbol, a pointer because of use in table, etc
+		Symbol* EOFSymbol;
+		//The nullSymbol, ditto with above. Also used in comparisons
+		Symbol* nullSymbol;
+
 		std::vector< std::vector<ParseAction*>* >  table;
 		std::vector<Symbol*> symbolIndexVec;