package org.pdf4j.saxon.functions;
import org.pdf4j.saxon.expr.Expression;
import org.pdf4j.saxon.expr.ExpressionVisitor;
import org.pdf4j.saxon.expr.Literal;
import org.pdf4j.saxon.trans.XPathException;
import org.pdf4j.saxon.value.AnyURIValue;
/**
* This class supports the static-base-uri() function in XPath 2.0. The expressio
* is always evaluated at compile time.
*/
public class StaticBaseURI extends CompileTimeFunction {
/**
* Compile time evaluation
* @param visitor an expression visitor
*/
public Expression preEvaluate(ExpressionVisitor visitor) throws XPathException {
String baseURI = visitor.getStaticContext().getBaseURI();
if (baseURI == null) {
return Literal.makeEmptySequence();
}
return Literal.makeLiteral(new AnyURIValue(baseURI));
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
// you may not use this file except in compliance with the License. You may obtain a copy of the
// License at http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): none.
//