QualifiedNameExpr.java

/* 
  Copyright (C) 2013 Raquel Pau and Albert Coroleu.
 
 Walkmod is free software: you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 
 Walkmod is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public License
 along with Walkmod.  If not, see <http://www.gnu.org/licenses/>.*/
package org.walkmod.javalang.ast.expr;

import java.util.List;

import org.walkmod.javalang.ast.Node;
import org.walkmod.javalang.visitors.GenericVisitor;
import org.walkmod.javalang.visitors.VoidVisitor;

/**
 * @author Julio Vilmar Gesser
 */
public final class QualifiedNameExpr extends NameExpr {

   private NameExpr qualifier;

   public QualifiedNameExpr() {
   }

   public QualifiedNameExpr(NameExpr scope, String name) {
      super(name);
      setQualifier(scope);
   }

   public QualifiedNameExpr(int beginLine, int beginColumn, int endLine, int endColumn, NameExpr scope, String name) {
      super(beginLine, beginColumn, endLine, endColumn, name);
      setQualifier(scope);
   }
   
   @Override
   public boolean removeChild(Node child) {
      boolean result = false;
      if(child != null){
         if(qualifier == child){
            qualifier = null;
            result = true;
         }
      }
      if(result){
         updateReferences(child);
      }
      return result;
   }

   @Override
   public List<Node> getChildren() {
      List<Node> children = super.getChildren();
      if (qualifier != null) {
         children.add(qualifier);
      }
      return children;
   }

   @Override
   public <R, A> R accept(GenericVisitor<R, A> v, A arg) {
      if (!check()) {
         return null;
      }
      return v.visit(this, arg);
   }

   @Override
   public <A> void accept(VoidVisitor<A> v, A arg) {
      if (check()) {
         v.visit(this, arg);
      }
   }

   public NameExpr getQualifier() {
      return qualifier;
   }

   public void setQualifier(NameExpr qualifier) {
      this.qualifier = qualifier;
      setAsParentNodeOf(qualifier);
   }

   @Override
   public QualifiedNameExpr clone() throws CloneNotSupportedException {
      return new QualifiedNameExpr(clone(getQualifier()), getName());
   }

}