com.sun.msv.grammar.AttributeExp Maven / Gradle / Ivy
/*
* @(#)$Id: AttributeExp.java,v 1.16 2003/12/12 21:36:38 kohsuke 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;
/**
* Attribute declaration.
*
*
* Attribute declaration consists of a NameClass that verifies attribute name
* and an Expression that verifies the value of the attribute.
*
* @author Kohsuke KAWAGUCHI
*/
public class AttributeExp extends Expression implements NameClassAndExpression {
/** constraint over attribute name */
public final NameClass nameClass;
public final NameClass getNameClass() { return nameClass; }
/** child expression */
public final Expression exp;
public final Expression getContentModel() { return exp; }
public AttributeExp( NameClass nameClass, Expression exp ) {
super( nameClass.hashCode()+exp.hashCode() );
this.nameClass = nameClass;
this.exp = exp;
}
protected final int calcHashCode() {
return nameClass.hashCode()+exp.hashCode();
}
public boolean equals( Object o ) {
// reject derived classes
if(o.getClass()!=AttributeExp.class) return false;
AttributeExp rhs = (AttributeExp)o;
return rhs.nameClass.equals(nameClass) && rhs.exp.equals(exp);
}
public Object visit( ExpressionVisitor visitor ) { return visitor.onAttribute(this); }
public Expression visit( ExpressionVisitorExpression visitor ) { return visitor.onAttribute(this); }
public boolean visit( ExpressionVisitorBoolean visitor ) { return visitor.onAttribute(this); }
public void visit( ExpressionVisitorVoid visitor ) { visitor.onAttribute(this); }
protected boolean calcEpsilonReducibility() {
return false;
}
// serialization support
private static final long serialVersionUID = 1;
}