Examples of com.bazaarvoice.jless.ast.node.InternalNode

com.bazaarvoice.jless.ast.node.InternalNode
Super class for all internal nodes of the tree. A variety of methods allow for manipulating the children of an InternalNode, while still ensuring that only one parent owns a given child node at any one time. A mutable iterator is available, allowing for typical {@link ListIterator} operations, as well as modifications at arbitrary indices from the iterator.Additionally, the child set may be modified while iteration is occurring without going through the iterator directly.


@Test
public class NodeTest {


    public void testChildIterators() {
        InternalNode p = new PlaceholderNode();
        p.addChild(new SimpleNode("c1"));
        p.addChild(new SimpleNode("c2"));
        p.addChild(new SimpleNode("c3"));
        p.addChild(new SimpleNode("c4"));


        RandomAccessListIterator i1 = p.pushChildIterator();
        i1.next();
        RandomAccessListIterator i2 = p.pushChildIterator();
        i2.next();
        i2.next();
        RandomAccessListIterator i3 = p.pushChildIterator();
        i3.next();
        i3.next();
        i3.next();


        Assert.assertEquals(i1.nextIndex(), 1);
        Assert.assertEquals(i2.nextIndex(), 2);
        Assert.assertEquals(i3.nextIndex(), 3);
        
        p.addChild(2, new SimpleNode("c2a"));


        Assert.assertEquals(i1.nextIndex(), 1);
        Assert.assertEquals(i2.nextIndex(), 3);
        Assert.assertEquals(i3.nextIndex(), 4);
    }

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public final class NodeTreeUtils {


    private NodeTreeUtils() {}


    public static boolean parentHasNext(Node node) {
        InternalNode parent = node.getParent();
        return parent != null && parent.isIterating() && parent.getLatestChildIterator().hasNext();
    }

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        InternalNode parent = node.getParent();
        return parent != null && parent.isIterating() && parent.getLatestChildIterator().hasNext();
    }


    public static boolean parentHasAnyFollowing(Node node, Class targetClass) {
        InternalNode parent = node.getParent();


        if (!parent.isIterating()) {
            return false;
        }


        boolean found = false;


        RandomAccessListIterator<Node> it = parent.pushChildIterator(true);


        // Search ahead for an instance of the target class
        while (it.hasNext()) {
            if (targetClass.isInstance(it.next())) {
                found = true;

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Related Classes of com.bazaarvoice.jless.ast.node.InternalNode

com.bazaarvoice.jless.ast.util.NodeTreeUtils

com.bazaarvoice.jless.NodeTest

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