public boolean nextNode()

in src/main/java/org/apache/commons/jxpath/ri/axes/PredicateContext.java [66:119]
46 lines of code
12 McCabe index (conditional complexity)

    public boolean nextNode() {
        if (done) {
            return false;
        }
        while (parentContext.nextNode()) {
            if (setupDynamicPropertyPointer()) {
                final Object pred = nameTestExpression.computeValue(parentContext);
                final String propertyName = InfoSetUtil.stringValue(pred);
                // At this point it would be nice to say:
                // dynamicPropertyPointer.setPropertyName(propertyName)
                // and then: dynamicPropertyPointer.isActual().
                // However some PropertyPointers, e.g. DynamicPropertyPointer
                // will declare that any property you ask for is actual.
                // That's not acceptable for us: we really need to know
                // if the property is currently declared. Thus,
                // we'll need to perform a search.
                boolean ok = false;
                final String[] names = dynamicPropertyPointer.getPropertyNames();
                for (final String name : names) {
                    if (name.equals(propertyName)) {
                        ok = true;
                        break;
                    }
                }
                if (ok) {
                    dynamicPropertyPointer.setPropertyName(propertyName);
                    position++;
                    return true;
                }
            } else {
                Object pred = expression.computeValue(parentContext);
                if (pred instanceof Iterator) {
                    if (!((Iterator) pred).hasNext()) {
                        return false;
                    }
                    pred = ((Iterator) pred).next();
                }
                if (pred instanceof NodePointer) {
                    pred = ((NodePointer) pred).getNode();
                }
                if (pred instanceof Number) {
                    final int pos = (int) InfoSetUtil.doubleValue(pred);
                    position++;
                    done = true;
                    return parentContext.setPosition(pos);
                }
                if (InfoSetUtil.booleanValue(pred)) {
                    position++;
                    return true;
                }
            }
        }
        return false;
    }