src/main/java/org/apache/commons/ognl/ASTUnsignedShiftRight.java

package org.apache.commons.ognl;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * $Id$
 */
class ASTUnsignedShiftRight
    extends NumericExpression
{
    public ASTUnsignedShiftRight( int id )
    {
        super( id );
    }

    public ASTUnsignedShiftRight( OgnlParser p, int id )
    {
        super( p, id );
    }

    protected Object getValueBody( OgnlContext context, Object source )
        throws OgnlException
    {
        Object v1 = children[0].getValue( context, source );
        Object v2 = children[1].getValue( context, source );
        return OgnlOps.unsignedShiftRight( v1, v2 );
    }

    public String getExpressionOperator( int index )
    {
        return ">>>";
    }

    public String toGetSourceString( OgnlContext context, Object target )
    {
        String result = "";

        try
        {

            String child1 = OgnlRuntime.getChildSource( context, target, children[0] );
            child1 = coerceToNumeric( child1, context, children[0] );

            String child2 = OgnlRuntime.getChildSource( context, target, children[1] );
            child2 = coerceToNumeric( child2, context, children[1] );

            Object v1 = children[0].getValue( context, target );
            int type = OgnlOps.getNumericType( v1 );

            if ( type <= OgnlOps.INT )
            {
                child1 = "(int)" + child1;
                child2 = "(int)" + child2;
            }

            result = child1 + " >>> " + child2;

            context.setCurrentType( Integer.TYPE );
            context.setCurrentObject( getValueBody( context, target ) );

        }
        catch ( Throwable t )
        {
            throw OgnlOps.castToRuntime( t );
        }

        return result;
    }

    public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data )
        throws OgnlException
    {
        return visitor.visit( this, data );
    }
}