/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.xml.internal.rngom.binary;
import com.sun.xml.internal.rngom.nc.ChoiceNameClass;
import com.sun.xml.internal.rngom.nc.NameClass;
class Alphabet {
private NameClass nameClass;
boolean isEmpty() {
return nameClass == null;
}
void addElement(NameClass nc) {
if (nameClass == null)
nameClass = nc;
else if (nc != null)
nameClass = new ChoiceNameClass(nameClass, nc);
}
void addAlphabet(Alphabet a) {
addElement(a.nameClass);
}
void checkOverlap(Alphabet a) throws RestrictionViolationException {
if (nameClass != null
&& a.nameClass != null
&& nameClass.hasOverlapWith(a.nameClass))
throw new RestrictionViolationException("interleave_element_overlap");
}
}