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//--------------------------------------------------------------------------
//	Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
//  All rights reserved.
//
//	Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are
//  met:
//
//	Redistributions of source code must retain the above copyright notice,
//  this list of conditions and the following disclaimer.
//	Redistributions in binary form must reproduce the above copyright
//  notice, this list of conditions and the following disclaimer in the
//  documentation and/or other materials provided with the distribution.
//	Neither the name of the Drew Davidson nor the names of its contributors
//  may be used to endorse or promote products derived from this software
//  without specific prior written permission.
//
//	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
//  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
//  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
//  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
//  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
//  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
//  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
//  THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
//  DAMAGE.
//--------------------------------------------------------------------------
package ognl;

/**
 * @author Luke Blanshard ([email protected])
 * @author Drew Davidson ([email protected])
 */
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;
    }
}