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: ASTInstanceof.java 1194869 2011-10-29 11:10:16Z mcucchiara $
   * @author Luke Blanshard (blanshlu@netscape.net)
   * @author Drew Davidson (drew@ognl.org)
   */
  public class ASTInstanceof
      extends SimpleNode
      implements NodeType
  {
      private String targetType;
  
      public ASTInstanceof( int id )
      {
          super( id );
      }
  
      public ASTInstanceof( OgnlParser p, int id )
      {
          super( p, id );
      }
  
      void setTargetType( String targetType )
      {
          this.targetType = targetType;
      }
  
      String getTargetType() 
      {
          return targetType;
      }
  
      protected Object getValueBody( OgnlContext context, Object source )
          throws OgnlException
      {
          Object value = children[0].getValue( context, source );
          return OgnlRuntime.isInstance( context, value, targetType ) ? Boolean.TRUE : Boolean.FALSE;
      }
  
      public Class getGetterClass()
      {
          return boolean.class;
      }
  
      public Class getSetterClass()
      {
          return null;
      }
  
      public String toGetSourceString( OgnlContext context, Object target )
      {
          try
          {
  
              String ret = "";
  
              if ( ASTConst.class.isInstance( children[0] ) )
              {
                  ret = ( (Boolean) getValueBody( context, target ) ).toString();
              }
              else
              {
                  ret = children[0].toGetSourceString( context, target ) + " instanceof " + targetType;
              }
              context.setCurrentType( Boolean.TYPE );
  
              return ret;
  
          }
          catch ( Throwable t )
          {
              throw OgnlOps.castToRuntime( t );
          }
      }
  
      public String toSetSourceString( OgnlContext context, Object target )
      {
          return toGetSourceString( context, target );
      }
     
     public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data )
         throws OgnlException
     {
         return visitor.visit( this, data );
     }
 }