@Override
	protected TokenSource createLexer(CharStream stream) {
		Lexer lexer = new IndentingLexer(stream);
		lexer.setCharStream(stream);
		return lexer;
	}

	@Override
	protected XtextTokenStream createTokenStream(TokenSource tokenSource) {
		XtextTokenStream stream = new XtextTokenStream(tokenSource, getTokenDefProvider());
		stream.setInitialHiddenTokens("RULE_WS", "RULE_ML_COMMENT", "RULE_SL_COMMENT");
		return stream;
	}
	
	@Override
	protected AbstractInternalAntlrParser createParser(XtextTokenStream stream) {
		InternalFallParser parser = new InternalFallParser(stream, getGrammarAccess());
		return parser;
	}