public final EsperParser.conditionaloperator_return conditionaloperator() throws RecognitionException {
        EsperParser.conditionaloperator_return retval = new EsperParser.conditionaloperator_return();
        retval.start = input.LT(1);


        Object root_0 = null;

        Token set41=null;

        Object set41_tree=null;

        try {
            // C:\\Users\\Alex\\Dropbox\\EclipseWorkspace\\esper-compiler\\src\\compiler\\Esper.g:51:21: ( LESSTHAN | EQUALTO | GREATERTHAN | LESSTHANEQUAL | GREATERTHANEQUAL )
            // C:\\Users\\Alex\\Dropbox\\EclipseWorkspace\\esper-compiler\\src\\compiler\\Esper.g:
            {
            root_0 = (Object)adaptor.nil();


            set41=(Token)input.LT(1);

            if ( input.LA(1)==EQUALTO||(input.LA(1) >= GREATERTHAN && input.LA(1) <= GREATERTHANEQUAL)||(input.LA(1) >= LESSTHAN && input.LA(1) <= LESSTHANEQUAL) ) {
                input.consume();
                adaptor.addChild(root_0, 
                (Object)adaptor.create(set41)
                );
                state.errorRecovery=false;
            }
            else {
                MismatchedSetException mse = new MismatchedSetException(null,input);
                throw mse;
            }


            }

            retval.stop = input.LT(-1);


            retval.tree = (Object)adaptor.rulePostProcessing(root_0);
            adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop);

        }
        catch (RecognitionException re) {
            reportError(re);
            recover(input,re);
    	retval.tree = (Object)adaptor.errorNode(input, retval.start, input.LT(-1), re);

        }

        finally {
        	// do for sure before leaving
        }
        return retval;
    }