/*
 * 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.
 */
package ognl;

import ognl.enhance.ExpressionCompiler;

public class ASTRootVarRef extends ASTVarRef {

    private static final long serialVersionUID = 5015348645898451815L;

    public ASTRootVarRef(int id) {
        super(id);
    }

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

    protected Object getValueBody(OgnlContext context, Object source)
            throws OgnlException {
        return context.getRoot();
    }

    protected void setValueBody(OgnlContext context, Object target, Object value)
            throws OgnlException {
        context.setRoot(value);
    }

    public String toString() {
        return "#root";
    }

    public String toGetSourceString(OgnlContext context, Object target) {
        if (target != null)
            getterClass = target.getClass();

        if (getterClass != null) {

            context.setCurrentType(getterClass);
        }

        if (parent == null || (getterClass != null && getterClass.isArray()))
            return "";
        else
            return ExpressionCompiler.getRootExpression(this, target, context);
    }

    public String toSetSourceString(OgnlContext context, Object target) {
        if (parent == null || (getterClass != null && getterClass.isArray()))
            return "";
        else
            return "$3";
    }
}
