/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.tinkerpop.gremlin.process.traversal.lambda;

import org.apache.tinkerpop.gremlin.process.traversal.Traverser;
import org.apache.tinkerpop.gremlin.structure.Element;
import org.apache.tinkerpop.gremlin.structure.T;

/**
 * @author Marko A. Rodriguez (http://markorodriguez.com)
 */
public final class TokenTraversal<S extends Element, E> extends AbstractLambdaTraversal<S, E> {

    private E e;
    private final T t;

    public TokenTraversal(final T t) {
        this.t = t;
    }

    @Override
    public E next() {
        return this.e;
    }

    @Override
    public void addStart(final Traverser.Admin<S> start) {
        this.e = (E) this.t.apply(start.get());
    }

    @Override
    public String toString() {
        return this.t.toString();
    }

    public T getToken() {
        return this.t;
    }

    @Override
    public int hashCode() {
        return this.getClass().hashCode() ^ this.t.hashCode();
    }
}