Parameter.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.body;

import java.util.List;

import org.walkmod.javalang.ast.Node;
import org.walkmod.javalang.ast.Refactorizable;
import org.walkmod.javalang.ast.Refactorization;
import org.walkmod.javalang.ast.expr.AnnotationExpr;
import org.walkmod.javalang.ast.type.Type;
import org.walkmod.javalang.visitors.GenericVisitor;
import org.walkmod.javalang.visitors.VoidVisitor;

/**
 * @author Julio Vilmar Gesser
 */
public final class Parameter extends BaseParameter implements Refactorizable {

   private Type type;

   private boolean isVarArgs;

   public Parameter() {
   }

   public Parameter(Type type, VariableDeclaratorId id) {
      super(id);
      setType(type);
   }

   public Parameter(int modifiers, Type type, VariableDeclaratorId id) {
      super(modifiers, id);
      setType(type);
   }

   public Parameter(int beginLine, int beginColumn, int endLine, int endColumn, int modifiers,
         List<AnnotationExpr> annotations, Type type, boolean isVarArgs, VariableDeclaratorId id) {
      super(beginLine, beginColumn, endLine, endColumn, modifiers, annotations, id);
      setType(type);
      setVarArgs(isVarArgs);
   }

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

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

   public boolean isVarArgs() {
      return isVarArgs;
   }

   public void setType(Type type) {
      this.type = type;
      setAsParentNodeOf(type);
   }

   public void setVarArgs(boolean isVarArgs) {
      this.isVarArgs = isVarArgs;
   }

   @Override
   public boolean rename(String newName) {
      Refactorization refactorization = new Refactorization();
      if (refactorization.refactorVariable(this, newName)) {
         replaceChildNode(getId(), new VariableDeclaratorId(newName));
         return true;
      }
      return false;
   }

   @Override
   public Parameter clone() throws CloneNotSupportedException {
      return new Parameter(getModifiers(), clone(getType()), clone(getId()));
   }
}