/*
* @(#)$Id: ComplexAcceptor.java,v 1.6 2001/10/09 00:05:13 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.verifier.regexp;
import com.sun.msv.grammar.Expression;
import com.sun.msv.grammar.ExpressionPool;
import com.sun.msv.grammar.ElementExp;
import com.sun.msv.verifier.Acceptor;
/**
* Accept that is used when more than one pattern can be applicable to the current context.
*
* @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
*/
public final class ComplexAcceptor extends ComplexAcceptorBaseImpl {
/**
* each item of this array should be considered as read-only.
*/
public final ElementExp[] owners;
private static Expression[] createDefaultContentModels( ElementExp[] owners, ExpressionPool pool ) {
Expression[] r = new Expression[owners.length];
for( int i=0; i<owners.length; i++ )
r[i] = owners[i].contentModel.getExpandedExp(pool);
return r;
}
public ComplexAcceptor( REDocumentDeclaration docDecl,
Expression combined, ElementExp[] primitives ) {
this( docDecl, combined,
createDefaultContentModels(primitives,docDecl.pool), primitives );
}
public ComplexAcceptor(
REDocumentDeclaration docDecl, Expression combined,
Expression[] contentModels, ElementExp[] owners ) {
// since all owners should belong to the same schema language,
// ignoreUndeclaredAttributes must be the same.
// that's why I'm using owners[0].
super( docDecl, combined, contentModels, owners[0].ignoreUndeclaredAttributes );
this.owners = owners;
}
public Acceptor createClone() {
Expression[] models = new Expression[contents.length];
System.arraycopy(contents,0, models, 0, contents.length );
return new ComplexAcceptor( docDecl, getExpression(), models, owners );
}
/**
* collects satisfied ElementExps.
*
* "satisfied ElementExps" are ElementExps whose
* contents is now epsilon reducible.
*/
public final ElementExp[] getSatisfiedOwners()
{
ElementExp[] satisfied;
int i,cnt;
// count # of satisfied ElementExp.
for( i=0,cnt=0; i<contents.length; i++ )
if( contents[i].isEpsilonReducible() ) cnt++;
if(cnt==0) return new ElementExp[0]; // no one is satisfied.
satisfied = new ElementExp[cnt];
for( i=0,cnt=0; i<contents.length; i++ )
if( contents[i].isEpsilonReducible() )
satisfied[cnt++] = owners[i];
return satisfied;
}
}