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.
   */
  
  import org.apache.commons.ognl.enhance.ExpressionCompiler;
  import org.apache.commons.ognl.enhance.OrderedReturn;
  
  /**
   * $Id: ASTSequence.java 1194869 2011-10-29 11:10:16Z mcucchiara $
   * @author Luke Blanshard (blanshlu@netscape.net)
   * @author Drew Davidson (drew@ognl.org)
   */
  public class ASTSequence
      extends SimpleNode
      implements NodeType, OrderedReturn
  {
      private Class getterClass;
  
      private String lastExpression;
  
      private String coreExpression;
  
      public ASTSequence( int id )
      {
          super( id );
      }
  
      public ASTSequence( OgnlParser p, int id )
      {
          super( p, id );
      }
  
      public void jjtClose()
      {
          flattenTree();
      }
  
      protected Object getValueBody( OgnlContext context, Object source )
          throws OgnlException
      {
          Object result = null;
          for ( int i = 0; i < children.length; ++i )
          {
              result = children[i].getValue( context, source );
          }
  
          return result; // The result is just the last one we saw.
      }
  
      protected void setValueBody( OgnlContext context, Object target, Object value )
          throws OgnlException
      {
          int last = children.length - 1;
          for ( int i = 0; i < last; ++i )
          {
              children[i].getValue( context, target );
          }
          children[last].setValue( context, target, value );
      }
  
      public Class getGetterClass()
      {
          return getterClass;
      }
  
      public Class getSetterClass()
      {
          return null;
      }
  
      public String getLastExpression()
      {
          return lastExpression;
      }
  
      public String getCoreExpression()
      {
          return coreExpression;
      }
  
      public String toSetSourceString( OgnlContext context, Object target )
      {
         return "";
     }
 
     public String toGetSourceString( OgnlContext context, Object target )
     {
         String result = "";
 
         NodeType lastType = null;
 
         for ( int i = 0; i < children.length; ++i )
         {
             // System.out.println("astsequence child : " + _children[i].getClass().getName());
             String seqValue = children[i].toGetSourceString( context, target );
 
             if ( ( i + 1 ) < children.length && ASTOr.class.isInstance( children[i] ) )
             {
                 seqValue = "(" + seqValue + ")";
             }
 
             if ( i > 0 && ASTProperty.class.isInstance( children[i] ) && seqValue != null
                 && seqValue.trim().length() > 0 )
             {
                 String pre = (String) context.get( "_currentChain" );
                 if ( pre == null )
                 {
                     pre = "";
                 }
                 
                 seqValue =
                     ExpressionCompiler.getRootExpression( children[i], context.getRoot(), context ) + pre + seqValue;
                 context.setCurrentAccessor( context.getRoot().getClass() );
             }
 
             if ( ( i + 1 ) >= children.length )
             {
                 coreExpression = result;
                 lastExpression = seqValue;
             }
 
             if ( seqValue != null && seqValue.trim().length() > 0 && ( i + 1 ) < children.length )
             {
                 result += seqValue + ";";
             }
             else if ( seqValue != null && seqValue.trim().length() > 0 )
             {
                 result += seqValue;
             }
             // set last known type from last child with a type
 
             if ( NodeType.class.isInstance( children[i] ) && ( (NodeType) children[i] ).getGetterClass() != null )
             {
                 lastType = (NodeType) children[i];
             }
         }
 
         if ( lastType != null )
         {
             getterClass = lastType.getGetterClass();
         }
 
         return result;
     }
     
     public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data )
         throws OgnlException
     {
         return visitor.visit( this, data );
     }
 }