/*
* @(#)$Id: ConcurExp.java,v 1.3 2001/10/18 23:52:08 Bear Exp $
*
* Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
*
*/
package com.sun.msv.grammar;
/**
* <concur> pattern of TREX.
*
* None of the other language needs this expression.
* So application can deny processing this expression if neceesary,
* without hampering the multi-schema-ness.
*
* @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
*/
public final class ConcurExp extends BinaryExp {
ConcurExp( Expression left, Expression right ) {
super(left,right,HASHCODE_CONCUR);
}
public Object visit( ExpressionVisitor visitor ) {
return visitor.onConcur(this);
}
public Expression visit( ExpressionVisitorExpression visitor ) {
return visitor.onConcur(this);
}
public boolean visit( ExpressionVisitorBoolean visitor ) {
return visitor.onConcur(this);
}
public void visit( ExpressionVisitorVoid visitor ) {
visitor.onConcur(this);
}
protected boolean calcEpsilonReducibility() {
return exp1.isEpsilonReducible() && exp2.isEpsilonReducible();
}
}