author | attila |
Tue, 01 Nov 2016 15:31:44 +0100 | |
changeset 41842 | 50202a344d28 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file, and Oracle licenses the original version of this file under the BSD |
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* license: |
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*/ |
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/* |
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Copyright 2016 Attila Szegedi |
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|
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Licensed under both the Apache License, Version 2.0 (the "Apache License") |
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and the BSD License (the "BSD License"), with licensee being free to |
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choose either of the two at their discretion. |
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|
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You may not use this file except in compliance with either the Apache |
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License or the BSD License. |
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|
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If you choose to use this file in compliance with the Apache License, the |
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following notice applies to you: |
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|
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You may obtain a copy of the Apache License at |
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|
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http://www.apache.org/licenses/LICENSE-2.0 |
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|
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Unless required by applicable law or agreed to in writing, software |
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distributed under the License is distributed on an "AS IS" BASIS, |
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
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implied. See the License for the specific language governing |
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permissions and limitations under the License. |
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|
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If you choose to use this file in compliance with the BSD License, the |
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following notice applies to you: |
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|
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are |
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met: |
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* Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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* Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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* Neither the name of the copyright holder nor the names of |
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contributors may be used to endorse or promote products derived from |
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this software without specific prior written permission. |
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|
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER |
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BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package jdk.dynalink; |
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/** |
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* An enumeration of standard namespaces defined by Dynalink. |
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*/ |
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public enum StandardNamespace implements Namespace { |
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/** |
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* Standard namespace for properties of an object. |
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*/ |
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PROPERTY, |
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/** |
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* Standard namespace for elements of a collection object. |
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*/ |
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ELEMENT, |
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/** |
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* Standard namespace for methods of an object. The method objects retrieved |
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* through a {@link StandardOperation#GET} on this namespace can be (and where |
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* object semantics allows they should be) unbound, that is: not bound to the |
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* object they were retrieved through. When they are used with |
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* {@link StandardOperation#CALL} an explicit "this" receiver argument is always |
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* passed to them. Of course bound methods can be returned if the object semantics |
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* requires them and such methods are free to ignore the receiver passed in the |
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* {@code CALL} operation or even raise an error when it is different from the one |
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* the method is bound to, or exhibit any other behavior their semantics requires |
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* in such case. |
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*/ |
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METHOD; |
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|
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/** |
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* If the passed in operation is a {@link NamespaceOperation}, or a |
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* {@link NamedOperation} wrapping a {@link NamespaceOperation}, then it |
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* returns the first (if any) {@link StandardNamespace} in its namespace |
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* list. If the passed operation is not a namespace operation (optionally |
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* wrapped in a named operation), or if it doesn't have any standard |
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* namespaces in it, returns {@code null}. |
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* @param op the operation |
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* @return the first standard namespace in the operation's namespace list |
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*/ |
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public static StandardNamespace findFirst(final Operation op) { |
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for(final Namespace ns: NamespaceOperation.getNamespaces(NamedOperation.getBaseOperation(op))) { |
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if (ns instanceof StandardNamespace) { |
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return (StandardNamespace)ns; |
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} |
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} |
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return null; |
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} |
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} |