com.sun.xml.xsom.XSTerm Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.xsom;
import com.sun.xml.xsom.visitor.XSTermFunction;
import com.sun.xml.xsom.visitor.XSTermVisitor;
import com.sun.xml.xsom.visitor.XSTermFunctionWithParam;
/**
* A component that can be referenced from {@link XSParticle}
*
* This interface provides a set of type check functions (isXXX),
* which are essentially:
*
*
* boolean isXXX() {
* return this instanceof XXX;
* }
*
*
* and a set of cast functions (asXXX), which are
* essentially:
*
*
* XXX asXXX() {
* if(isXXX()) return (XXX)this;
* else return null;
* }
*
*/
public interface XSTerm extends XSComponent
{
void visit( XSTermVisitor visitor );
T apply( XSTermFunction function );
T apply( XSTermFunctionWithParam function, P param );
// cast functions
boolean isWildcard();
boolean isModelGroupDecl();
boolean isModelGroup();
boolean isElementDecl();
XSWildcard asWildcard();
XSModelGroupDecl asModelGroupDecl();
XSModelGroup asModelGroup();
XSElementDecl asElementDecl();
}