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/*
* ReturnStatement.java 1.0
*
*
* Jun 20, 1997 by mich
* Sep 29, 1997 by bv
* Oct 11, 1997 by mich
*
* @see io.devnulllabs.openjava.ptree.ParseTree
* @version 1.0 last updated: Oct 11, 1997
* @author Michiaki Tatsubori
*/
package io.devnulllabs.openjava.ptree;
import io.devnulllabs.openjava.ptree.util.ParseTreeVisitor;
/**
* The <code>ReturnStatement</code> class represents
* a return statement node of parse tree.
*
* @see io.devnulllabs.openjava.ptree.ParseTree
* @see io.devnulllabs.openjava.ptree.NonLeaf
* @see io.devnulllabs.openjava.ptree.Statement
*/
public class ReturnStatement extends NonLeaf implements Statement, ParseTree {
/**
* Allocates a new object.
*
* @param expr the expression to be returned by this statement.
* If this is null, nothing to be returned.
*/
public ReturnStatement(Expression expr) {
super();
set((ParseTree) expr);
}
/**
* Allocates a new object.
*
*/
public ReturnStatement() {
this(null);
}
/**
* Gets the returned expression by this statement.
*
* @return the expression to be returned by this statement.
*/
public Expression getExpression() {
return (Expression) elementAt(0);
}
/**
* Sets the returned expression by this statement.
*
* @param expr the expression to be returned by this statement.
*/
public void setExpression(Expression expr) {
setElementAt(expr, 0);
}
public void accept(ParseTreeVisitor v) throws ParseTreeException {
v.visit(this);
}
}
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