diff -r 0b347d8efb40 -r be020513a185 src/sample/nashorn/disassemble.js --- a/src/sample/nashorn/disassemble.js Mon Sep 25 11:52:40 2017 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,75 +0,0 @@ -/* - * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. - * - * 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 Oracle 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. - */ - -// Usage: jjs disassemble.js -- <.class-file-path> - -// Simple .class disassembler that uses bundled ObjectWeb ASM -// classes in jdk8. WARNING: Bundled ObjectWeb ASM classes are -// not part of official jdk8 API. It can be changed/removed -// without notice. So, this script is brittle by design! - -// This example demonstrates passing arguments to script -// from jjs command line, nio and ASM usage. - -// classes used -var FileSystems = Java.type("java.nio.file.FileSystems"); -var Files = Java.type("java.nio.file.Files"); -var System = Java.type("java.lang.System"); -var PrintWriter = Java.type("java.io.PrintWriter"); - -// WARNING: uses non-API classes of jdk8! -var ClassReader = Java.type("jdk.internal.org.objectweb.asm.ClassReader"); -var TraceClassVisitor = Java.type("jdk.internal.org.objectweb.asm.util.TraceClassVisitor"); - -// convert file name to Path instance -function path(file) { - return FileSystems.default.getPath(file); -} - -// read all file content as a byte[] -function readAllBytes(file) { - return Files.readAllBytes(path(file)); -} - -// disassemble .class byte[] and prints output to stdout -function disassemble(bytecode) { - var pw = new PrintWriter(System.out); - new ClassReader(bytecode).accept(new TraceClassVisitor(pw), 0); -} - -// check for command line arg (for .class file name) -if (arguments.length == 0 || !arguments[0].endsWith('.class')) { - print("Usage: jjs disassemble -- <.class file>"); - exit(1); -} - -// disassemble the given .class file -disassemble(readAllBytes(arguments[0]));