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


        Object root_0 = null;

        Token WHILE55=null;
        EsperParser.condition_return condition56 =null;

        EsperParser.statements_return statements57 =null;


        Object WHILE55_tree=null;

        try {
            // C:\\Users\\Alex\\Dropbox\\EclipseWorkspace\\esper-compiler\\src\\compiler\\Esper.g:66:8: ( WHILE ^ condition statements )
            // C:\\Users\\Alex\\Dropbox\\EclipseWorkspace\\esper-compiler\\src\\compiler\\Esper.g:66:10: WHILE ^ condition statements
            {
            root_0 = (Object)adaptor.nil();


            WHILE55=(Token)match(input,WHILE,FOLLOW_WHILE_in_while_672); 
            WHILE55_tree = 
            (Object)adaptor.create(WHILE55)
            ;
            root_0 = (Object)adaptor.becomeRoot(WHILE55_tree, root_0);


            pushFollow(FOLLOW_condition_in_while_675);
            condition56=condition();

            state._fsp--;

            adaptor.addChild(root_0, condition56.getTree());

            pushFollow(FOLLOW_statements_in_while_677);
            statements57=statements();

            state._fsp--;

            adaptor.addChild(root_0, statements57.getTree());

            }

            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;
    }