--- /dev/null Fri Oct 27 09:25:32 2017 +++ new/src/java.base/share/classes/jdk/internal/org/objectweb/asm/commons/ModuleTargetAttribute.java Fri Oct 27 09:25:32 2017 @@ -0,0 +1,110 @@ +/* + * 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: + * + * ASM: a very small and fast Java bytecode manipulation framework + * Copyright (c) 2000-2011 INRIA, France Telecom + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name of the copyright holders nor the names of its + * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.org.objectweb.asm.commons; + +import jdk.internal.org.objectweb.asm.Attribute; +import jdk.internal.org.objectweb.asm.ByteVector; +import jdk.internal.org.objectweb.asm.ClassReader; +import jdk.internal.org.objectweb.asm.ClassWriter; +import jdk.internal.org.objectweb.asm.Label; + +/** + * ModuleTarget attribute. + * This attribute is specific to the OpenJDK and may change in the future. + * + * @author Remi Forax + */ +public final class ModuleTargetAttribute extends Attribute { + public String platform; + + /** + * Creates an attribute with a platform name. + * @param platform the platform name on which the module can run. + */ + public ModuleTargetAttribute(final String platform) { + super("ModuleTarget"); + this.platform = platform; + } + + /** + * Creates an empty attribute that can be used as prototype + * to be passed as argument of the method + * {@link ClassReader#accept(org.objectweb.asm.ClassVisitor, Attribute[], int)}. + */ + public ModuleTargetAttribute() { + this(null); + } + + @Override + protected Attribute read(ClassReader cr, int off, int len, char[] buf, + int codeOff, Label[] labels) { + String platform = cr.readUTF8(off, buf); + return new ModuleTargetAttribute(platform); + } + + @Override + protected ByteVector write(ClassWriter cw, byte[] code, int len, + int maxStack, int maxLocals) { + ByteVector v = new ByteVector(); + int index = (platform == null)? 0: cw.newUTF8(platform); + v.putShort(index); + return v; + } +}