Examples of client.net.sf.saxon.ce.expr.instruct.UserFunction

Package client.net.sf.saxon.ce.expr.instruct

Examples of client.net.sf.saxon.ce.expr.instruct.UserFunction

client.net.sf.saxon.ce.expr.instruct.UserFunction
This object represents the compiled form of a user-written function (the source can be either an XSLT stylesheet function or an XQuery function).
It is assumed that type-checking, of both the arguments and the results, has been handled at compile time. That is, the expression supplied as the body of the function must be wrapped in code to check or convert the result to the required type, and calls on the function must be wrapped at compile time to check or convert the supplied arguments.

                boolean b = hasFunctionSignature(functionName, i);
                if (b) return true;
            }
            return false;
        }
        UserFunction uf = functions.get(makeKey(functionName, arity));
        return uf != null;
    }

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     * the function call, but no function was found.
     */


    public Expression bind(StructuredQName functionName, Expression[] staticArgs, StaticContext env, Container container)
            throws XPathException {
        UserFunction fn = functions.get(makeKey(functionName, staticArgs.length));
        if (fn == null) {
            return null;
        }
        ExpressionVisitor visitor = ExpressionVisitor.make(env, fn.getExecutable());
        UserFunctionCall fc = new UserFunctionCall();
        fc.setFunctionName(functionName);
        fc.setArguments(staticArgs);
        fc.setFunction(fn);
        fc.checkFunctionCall(fn, visitor);
        fc.setStaticType(fn.getResultType(config.getTypeHierarchy()));
        return fc;
    }

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            trace.setConstructType(StandardNames.XSL_FUNCTION);
            trace.setObjectName(getObjectName());
            exp = trace;          
        }


        UserFunction fn = new UserFunction();
        fn.setHostLanguage(Configuration.XSLT);
        fn.setBody(exp);
        fn.setFunctionName(getObjectName());
        setParameterDefinitions(fn);
        fn.setResultType(getResultType());
        fn.setSourceLocator(this);
        fn.setStackFrameMap(stackFrameMap);
        fn.setExecutable(exec);
        compiledFunction = fn;
        fixupInstruction(fn);


    }

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    public SequenceIterator iterate(XPathContext context) throws XPathException {
        final XPathContextMajor cm = (XPathContextMajor)context;
        while (true) {
            SequenceIterator iter = operand.iterate(cm);
            ValueRepresentation extent = SequenceExtent.makeSequenceExtent(iter);
            UserFunction fn = cm.getTailCallFunction();
            if (fn == null) {
                return Value.asIterator(extent);
            }
            if (fn != containingFunction) {
                return Value.asIterator(tailCallDifferentFunction(fn, cm));

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    public Item evaluateItem(XPathContext context) throws XPathException {
        final XPathContextMajor cm = (XPathContextMajor)context;
        while (true) {
            Item item = operand.evaluateItem(context);
            UserFunction fn = cm.getTailCallFunction();
            if (fn == null) {
               return item;
            }
            if (fn != containingFunction) {
                return Value.asItem(tailCallDifferentFunction(fn, cm));

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    public void process(XPathContext context) throws XPathException {
        final XPathContextMajor cm = (XPathContextMajor)context;
        while (true) {
            operand.process(context);
            UserFunction fn = cm.getTailCallFunction();
            if (fn == null) {
                return;
            }
            if (fn != containingFunction) {
                Value.asValue(tailCallDifferentFunction(fn, cm)).process(cm);

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Related Classes of client.net.sf.saxon.ce.expr.instruct.UserFunction

client.net.sf.saxon.ce.expr.TailCallLoop

client.net.sf.saxon.ce.functions.ExecutableFunctionLibrary

client.net.sf.saxon.ce.om.ValueRepresentation

client.net.sf.saxon.ce.style.XSLFunction

java.util.Iterator

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