/*
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.LinkedList;
import java.util.List;
import org.walkmod.javalang.ast.Node;
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 CastExpr extends Expression {
private Type type;
private Expression expr;
public CastExpr() {
}
public CastExpr(Type type, Expression expr) {
setType(type);
setExpr(expr);
}
public CastExpr(int beginLine, int beginColumn, int endLine, int endColumn, Type type, Expression expr) {
super(beginLine, beginColumn, endLine, endColumn);
setType(type);
setExpr(expr);
}
@Override
public boolean removeChild(Node child) {
boolean result = false;
if (child != null) {
if (type != null) {
if (type == child) {
type = null;
result = true;
}
}
if (!result) {
if (expr != null) {
if (expr == child) {
expr = null;
result = true;
}
}
}
}
if(result){
updateReferences(child);
}
return result;
}
@Override
public List<Node> getChildren() {
List<Node> children = new LinkedList<Node>();
if (type != null) {
children.add(type);
}
if (expr != null) {
children.add(expr);
}
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 Expression getExpr() {
return expr;
}
public Type getType() {
return type;
}
public void setExpr(Expression expr) {
if (this.expr != null) {
updateReferences(this.expr);
}
this.expr = expr;
setAsParentNodeOf(expr);
}
public void setType(Type type) {
if (this.type != null) {
updateReferences(this.type);
}
this.type = type;
setAsParentNodeOf(type);
}
@Override
public boolean replaceChildNode(Node oldChild, Node newChild) {
boolean updated = false;
if (type == oldChild) {
setType((Type) newChild);
updated = true;
}
if (!updated) {
if (expr == oldChild) {
setExpr((Expression) newChild);
updated = true;
}
}
return updated;
}
@Override
public CastExpr clone() throws CloneNotSupportedException {
return new CastExpr(clone(getType()), clone(getExpr()));
}
}