--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/internal/dynalink/NamedOperation.java Wed Jul 05 21:04:26 2017 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,195 +0,0 @@
-/*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * This file is available under and governed by the GNU General Public
- * License version 2 only, as published by the Free Software Foundation.
- * However, the following notice accompanied the original version of this
- * file, and Oracle licenses the original version of this file under the BSD
- * license:
- */
-/*
- Copyright 2015 Attila Szegedi
-
- Licensed under both the Apache License, Version 2.0 (the "Apache License")
- and the BSD License (the "BSD License"), with licensee being free to
- choose either of the two at their discretion.
-
- You may not use this file except in compliance with either the Apache
- License or the BSD License.
-
- If you choose to use this file in compliance with the Apache License, the
- following notice applies to you:
-
- You may obtain a copy of the Apache 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.
-
- If you choose to use this file in compliance with the BSD License, the
- following notice applies to you:
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are
- met:
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
- * Neither the name of the copyright holder nor the names of
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
- BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-package jdk.internal.dynalink;
-
-import java.util.Objects;
-
-/**
- * Operation that associates a name with another operation. Typically used with
- * operations that normally take a name or an index to bind them to a fixed
- * name. E.g. {@code new NamedOperation(StandardOperation.GET_PROPERTY, "color")}
- * will be a named operation for getting the property named "color" on the
- * object it is applied to, and
- * {@code new NamedOperation(StandardOperation.GET_ELEMENT, 3)} will be a named
- * operation for getting the element at index 3 from the collection it is
- * applied to. In these cases, the expected signature of the call site for the
- * operation will change to no longer include the name parameter. Specifically,
- * the documentation for all {@link StandardOperation} members describes how
- * they are affected by being incorporated into a named operation.
- */
-public final class NamedOperation implements Operation {
- private final Operation baseOperation;
- private final Object name;
-
- /**
- * Creates a new named operation.
- * @param baseOperation the base operation that is associated with a name.
- * @param name the name associated with the base operation. Note that the
- * name is not necessarily a string, but can be an arbitrary object. As the
- * name is used for addressing, it can be an {@link Integer} when meant
- * to be used as an index into an array or list etc.
- * @throws NullPointerException if either {@code baseOperation} or
- * {@code name} is null.
- * @throws IllegalArgumentException if {@code baseOperation} is itself a
- * {@code NamedOperation}.
- */
- public NamedOperation(final Operation baseOperation, final Object name) {
- if (baseOperation instanceof NamedOperation) {
- throw new IllegalArgumentException("baseOperation is a named operation");
- }
- this.baseOperation = Objects.requireNonNull(baseOperation, "baseOperation is null");
- this.name = Objects.requireNonNull(name, "name is null");
- }
-
- /**
- * Returns the base operation of this named operation.
- * @return the base operation of this named operation.
- */
- public Operation getBaseOperation() {
- return baseOperation;
- }
-
- /**
- * Returns the name of this named operation.
- * @return the name of this named operation.
- */
- public Object getName() {
- return name;
- }
-
- /**
- * Compares this named operation to another object. Returns true if the
- * other object is also a named operation, and both their base operations
- * and name are equal.
- */
- @Override
- public boolean equals(final Object obj) {
- if (obj instanceof NamedOperation) {
- final NamedOperation other = (NamedOperation)obj;
- return baseOperation.equals(other.baseOperation) && name.equals(other.name);
- }
- return false;
- }
-
- /**
- * Returns the hash code of this named operation. It is defined to be equal
- * to {@code baseOperation.hashCode() + 31 * name.hashCode()}.
- */
- @Override
- public int hashCode() {
- return baseOperation.hashCode() + 31 * name.hashCode();
- }
-
- /**
- * Returns the string representation of this named operation. It is defined
- * to be equal to {@code baseOperation.toString() + ":" + name.toString()}.
- */
- @Override
- public String toString() {
- return baseOperation.toString() + ":" + name.toString();
- }
-
- /**
- * If the passed operation is a named operation, returns its
- * {@link #getBaseOperation()}, otherwise returns the operation as is.
- * @param op the operation
- * @return the base operation of the passed operation.
- */
- public static Operation getBaseOperation(final Operation op) {
- return op instanceof NamedOperation ? ((NamedOperation)op).baseOperation : op;
- }
-
- /**
- * If the passed operation is a named operation, returns its
- * {@link #getName()}, otherwise returns null. Note that a named operation
- * object can never have a null name, therefore returning null is indicative
- * that the passed operation is not, in fact, a named operation.
- * @param op the operation
- * @return the name in the passed operation, or null if it is not a named
- * operation.
- */
- public static Object getName(final Operation op) {
- return op instanceof NamedOperation ? ((NamedOperation)op).name : null;
- }
-}