| /* |
| * Copyright (c) 2011, 2018, 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. |
| * |
| * 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. |
| */ |
| |
| package vm.mlvm.share; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| import nsk.share.ArgumentParser; |
| |
| public abstract class ClassfileGenerator { |
| |
| public static class Klass { |
| private String pkgName; |
| private String className; |
| private byte[] bytes; |
| private String mainMethodName; |
| private String mainMethodSignature; |
| |
| public Klass(String packageName, String className, String mainMethodName, String mainMethodSignature, byte[] bytes) { |
| this.pkgName = packageName; |
| this.className = className; |
| this.mainMethodName = mainMethodName; |
| this.mainMethodSignature = mainMethodSignature; |
| this.bytes = bytes; |
| } |
| |
| public String getClassName() { |
| return (this.pkgName != null ? (this.pkgName + ".") : "") + this.className; |
| } |
| |
| public String getSimpleClassName() { |
| return this.className; |
| } |
| |
| public String getPackageName() { |
| return this.pkgName; |
| } |
| |
| public String getMainMethodName() { |
| return mainMethodName; |
| } |
| |
| public String getMainMethodSignature() { |
| return mainMethodSignature; |
| } |
| |
| public byte[] getBytes() { |
| return this.bytes; |
| } |
| |
| public void writeClass(String destDir) throws IOException { |
| boolean wroteOk = false; |
| |
| File outDir; |
| if (this.pkgName != null) |
| outDir = new File(destDir, this.pkgName.replace('.', '/')); |
| else |
| outDir = new File("."); |
| |
| outDir.mkdirs(); |
| |
| File outFile = new File(outDir, this.className.concat(".class")); |
| FileOutputStream outStream = new FileOutputStream(outFile); |
| try { |
| outStream.write(this.bytes); |
| wroteOk = true; |
| } finally { |
| outStream.close(); |
| |
| if (!wroteOk) |
| outFile.delete(); |
| } |
| } |
| } |
| |
| protected String fullClassName, pkgName, shortClassName; |
| |
| public void setClassName(String pkgName, String shortClassName) { |
| this.pkgName = pkgName; |
| this.shortClassName = shortClassName; |
| fullClassName = (pkgName == null ? "" : (pkgName.replace('.', '/') + '/')) |
| + shortClassName; |
| } |
| |
| public abstract Klass[] generateBytecodes(); |
| |
| public static void main(String[] args) { |
| try { |
| Env.init(new ArgumentParser(args) { |
| @Override |
| protected boolean checkOption(String option, String value) { |
| if (option.equals("d")) |
| return true; |
| |
| return super.checkOption(option, value); |
| } |
| }); |
| |
| Class<?> caller = Class.forName(Thread.currentThread() |
| .getStackTrace()[2].getClassName()); |
| ClassfileGenerator gen = (ClassfileGenerator) caller.newInstance(); |
| gen.setClassName(caller.getPackage().getName(), caller |
| .getSimpleName().replaceFirst("^GENERATE_", "")); |
| |
| String destDir = Env.getArgParser().getOptions().getProperty("d"); |
| |
| Klass[] klasses = gen.generateBytecodes(); |
| |
| for (Klass k : klasses) |
| k.writeClass(destDir); |
| |
| } catch (Exception e) { |
| Env.complain(e, "Generator caught an error"); |
| System.exit(1); |
| } |
| } |
| } |