// QSpecBuilder.g:211:1: window_range_expression returns [ Window w ] : ^( WINDOWRANGE s= rowsboundary e= rowsboundary ) ;

    public final Window window_range_expression() throws RecognitionException {

        Window w = null;

        try {

            // QSpecBuilder.g:212:1: ( ^( WINDOWRANGE s= rowsboundary e= rowsboundary ) )

            // QSpecBuilder.g:213:2: ^( WINDOWRANGE s= rowsboundary e= rowsboundary )

    // $ANTLR start rowsboundary

    // QSpecBuilder.g:220:1: rowsboundary returns [Boundary b] : ( ^( FOLLOWING UNBOUNDED ) | ^( PRECEDING UNBOUNDED ) | CURRENT | ^( FOLLOWING n= NUMBER ) | ^( PRECEDING n= NUMBER ) );

    public final Boundary rowsboundary() throws RecognitionException {

        CommonTree n=null;

          RangeBoundary rb = new RangeBoundary();

    // QSpecBuilder.g:246:1: window_value_expression returns [ Window w ] : ^( WINDOWVALUES s= valuesboundary e= valuesboundary ) ;

    public final Window window_value_expression() throws RecognitionException {

        Window w = null;

        try {

            // QSpecBuilder.g:247:1: ( ^( WINDOWVALUES s= valuesboundary e= valuesboundary ) )

            // QSpecBuilder.g:248:2: ^( WINDOWVALUES s= valuesboundary e= valuesboundary )

    // $ANTLR start valuesboundary

    // QSpecBuilder.g:255:1: valuesboundary returns [Boundary b] : ( ^( FOLLOWING UNBOUNDED ) | ^( PRECEDING UNBOUNDED ) | CURRENT | ^( LESS ge= GROOVYEXPRESSION n= NUMBER ) | ^( MORE GROOVYEXPRESSION NUMBER ) );

    public final Boundary valuesboundary() throws RecognitionException {

        CommonTree ge=null;

        CommonTree n=null;