com.sun.msv.grammar.relax.ElementRules Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jaxb-extra-osgi Show documentation
JAXB extra OSGI bundle
There is a newer version: 2.3.0
/*
 * Copyright (c) 2001-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.sun.msv.grammar.relax;

import com.sun.msv.grammar.Expression;
import com.sun.msv.grammar.ExpressionPool;
import com.sun.msv.grammar.ReferenceExp;

/**
 * Set of ElementRule objects that share the label name.
 * 
 * ReferenceExp.exp contains choice of ElementRule objects.
 * 
 * @author Kohsuke KAWAGUCHI
 */
public class ElementRules extends ReferenceExp implements Exportable {
    
    protected ElementRules( String label, RELAXModule ownerModule ) {
        super(label);
        this.ownerModule = ownerModule;
    }
    
    public boolean equals( Object o ) {
        return this==o;
    }
    
    protected boolean calcEpsilonReducibility() {
        // elementRules are always not epsilon-reducible.
        return false;
    }
    
    public void addElementRule( ExpressionPool pool, ElementRule newRule ) {
        newRule.parent = this;
        if( exp==null )        // the first element
            exp = newRule;
        else
            exp = pool.createChoice(exp,newRule);
    }

    public Object visit( RELAXExpressionVisitor visitor )
    { return visitor.onElementRules(this); }

    public Expression visit( RELAXExpressionVisitorExpression visitor )
    { return visitor.onElementRules(this); }
    
    public boolean visit( RELAXExpressionVisitorBoolean visitor )
    { return visitor.onElementRules(this); }

    public void visit( RELAXExpressionVisitorVoid visitor )
    { visitor.onElementRules(this); }

    /**
     * a flag that indicates this elementRule is exported and
     * therefore accessible from other modules.
     */
    public boolean exported = false;
    public boolean isExported() { return exported; }
    
    /** RELAXModule object to which this object belongs */
    public final RELAXModule ownerModule;
    
    // serialization support
    private static final long serialVersionUID = 1;    
}