/*
* @(#)$Id: ValueState.java 1566 2003-06-09 20:37:49Z kk122374 $
*
* 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.reader.trex.ng;
import org.relaxng.datatype.Datatype;
import org.relaxng.datatype.DatatypeException;
import com.sun.msv.grammar.Expression;
import com.sun.msv.reader.ExpressionWithoutChildState;
import com.sun.msv.util.StringPair;
/**
* parses <value> pattern.
*
* @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
*/
public class ValueState extends ExpressionWithoutChildState {
protected final StringBuffer text = new StringBuffer();
public void characters( char[] buf, int from, int len ) {
text.append(buf,from,len);
}
public void ignorableWhitespace( char[] buf, int from, int len ) {
text.append(buf,from,len);
}
protected Expression makeExpression() {
final RELAXNGReader reader = (RELAXNGReader)this.reader;
String typeName = startTag.getCollapsedAttribute("type");
Datatype type;
StringPair typeFullName;
if(typeName==null) {
try {
// defaults to built-in token type.
type = reader.resolveDataTypeLibrary("").createDatatype("token");
typeFullName = new StringPair("","token");
} catch( DatatypeException e ) {
// since token is the built-in datatype,
// this can't happen
e.printStackTrace();
throw new InternalError();
}
} else {
type = reader.resolveDataType(typeName);
typeFullName = new StringPair(reader.datatypeLibURI,typeName);
}
Object value = type.createValue(text.toString(),reader);
if( value==null ) {
// this is not a good value for this type.
reader.reportError( RELAXNGReader.ERR_BAD_DATA_VALUE, typeName, text.toString().trim() );
return Expression.nullSet; // recover by returning something.
}
return reader.pool.createValue( type, typeFullName, value );
}
}