WildcardType.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.type;

import java.util.List;

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

/**
 * @author Julio Vilmar Gesser
 */
public final class WildcardType extends Type {

   private ReferenceType ext;

   private ReferenceType sup;

   public WildcardType() {
   }

   public WildcardType(ReferenceType ext) {
      setExtends(ext);
   }

   public WildcardType(ReferenceType ext, ReferenceType sup) {
      setExtends(ext);
      setSuper(sup);
   }

   public WildcardType(int beginLine, int beginColumn, int endLine, int endColumn, ReferenceType ext,
         ReferenceType sup) {
      super(beginLine, beginColumn, endLine, endColumn);
      setExtends(ext);
      setSuper(sup);
   }

   public WildcardType(int beginLine, int beginColumn, int endLine, int endColumn, ReferenceType ext, ReferenceType sup,
         List<AnnotationExpr> annotations) {
      super(beginLine, beginColumn, endLine, endColumn, annotations);
      setExtends(ext);
      setSuper(sup);

   }

   @Override
   public boolean removeChild(Node child) {
      boolean result = false;
      if (child != null) {
         if (ext == child) {
            ext = null;
            result = true;
         }
         if (!result) {
            if (sup == child) {
               sup = null;
               result = true;
            }
         }
      }
      if(result){
         updateReferences(child);
      }
      return result;
   }

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

   public ReferenceType getSuper() {
      return sup;
   }

   public void setExtends(ReferenceType ext) {
      if (this.ext != null) {
         updateReferences(this.ext);
      }
      this.ext = ext;
      setAsParentNodeOf(ext);
   }

   public void setSuper(ReferenceType sup) {
      if (this.sup != null) {
         updateReferences(this.sup);
      }
      this.sup = sup;
      setAsParentNodeOf(sup);
   }

   @Override
   public boolean replaceChildNode(Node oldChild, Node newChild) {
      boolean updated = super.replaceChildNode(oldChild, newChild);
      if (!updated) {
         if (ext == oldChild) {
            setExtends((ReferenceType) newChild);
            updated = true;
         }
         if (!updated) {
            if (sup == oldChild) {
               setSuper((ReferenceType) newChild);
            }
         }
      }
      return updated;
   }

   @Override
   public WildcardType clone() throws CloneNotSupportedException {
      return new WildcardType(clone(ext), clone(sup));
   }
}