/*
 * 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.commons.functor.core;

import java.io.Serializable;

import org.apache.commons.functor.BinaryProcedure;
import org.apache.commons.functor.Procedure;
import org.apache.commons.functor.UnaryProcedure;

/**
 * A procedure that does nothing at all.
 * <p>
 * Note that this class implements {@link Procedure},
 * {@link UnaryProcedure}, and {@link BinaryProcedure}.
 * </p>
 * @version $Revision$ $Date$
 * @author Rodney Waldhoff
 */
public final class NoOp implements Procedure, UnaryProcedure<Object>, BinaryProcedure<Object, Object>, Serializable {
    // static attributes
    // ------------------------------------------------------------------------
    /**
     * Basic NoOp instance.
     */
    public static final NoOp INSTANCE = new NoOp();

    // constructor
    // ------------------------------------------------------------------------
    /**
     * Create a new NoOp.
     */
    public NoOp() {
    }

    // predicate interface
    // ------------------------------------------------------------------------
    /**
     * {@inheritDoc}
     */
    public void run() {
    }

    /**
     * {@inheritDoc}
     */
    public void run(Object obj) {
    }

    /**
     * {@inheritDoc}
     */
    public void run(Object left, Object right) {
    }

    /**
     * {@inheritDoc}
     */
    public boolean equals(Object that) {
        return (that instanceof NoOp);
    }

    /**
     * {@inheritDoc}
     */
    public int hashCode() {
        return "NoOp".hashCode();
    }

    /**
     * {@inheritDoc}
     */
    public String toString() {
        return "NoOp";
    }

    // static methods
    // ------------------------------------------------------------------------
    /**
     * Get a NoOp instance.
     * @return NoOp
     */
    public static NoOp instance() {
        return INSTANCE;
    }

}

@@ -2642,10 +2642,628 @@
 %0A    %7D%0A%0A
+    /**%0A     * Get a typed NoOp %7B@link UnaryProcedure%7D.%0A     * @param %3CA%3E type%0A     * @return %3Ccode%3EUnaryProcedure&lt;A&gt;%3C/code%3E%0A     */%0A    @SuppressWarnings(%22unchecked%22)%0A    public static %3CA%3E UnaryProcedure%3CA%3E unaryInstance() %7B%0A        return (UnaryProcedure%3CA%3E) INSTANCE;%0A    %7D%0A%0A    /**%0A     * Get a typed NoOp %7B@link BinaryProcedure%7D.%0A     * @param %3CL%3E left type%0A     * @param %3CR%3E right type%0A     * @return %3Ccode%3EBinaryProcedure&lt;L, R&gt;%3C/code%3E%0A     */%0A    @SuppressWarnings(%22unchecked%22)%0A    public static %3CL, R%3E BinaryProcedure%3CL, R%3E binaryInstance() %7B%0A        return (BinaryProcedure%3CL, R%3E) INSTANCE;%0A    %7D%0A
 %7D%0A

add convenience static methods for typesafe NoOps