Mercurial > hg > graal-compiler
view mx/FilterTypes.java @ 21795:5d589f7383a6
converted OptionsVerifier to be a unit test
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 08 Jun 2015 22:21:12 +0200 |
parents | b6aadfd3dfbe |
children | 543f150e7fa0 |
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/* * 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. * * 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. */ public class FilterTypes { /** * Prints to {@link System#out} the values in {@code args[1 .. N]} that denote classes that are * {@link Class#isAssignableFrom(Class) assignable} to the type denoted in {@code args[0]}. The * values are separated by {@code "|"}. */ public static void main(String... args) throws Exception { Class<?> jvmciServiceInterface = Class.forName(args[0]); boolean needSep = false; StringBuilder buf = new StringBuilder(); for (int i = 1; i < args.length; ++i) { String serviceName = args[i]; Class<?> service = lookupService(serviceName); if (service != null && jvmciServiceInterface.isAssignableFrom(service)) { if (buf.length() != 0) { buf.append('|'); } buf.append(serviceName); needSep = true; } } System.out.print(buf); } private static Class<?> lookupService(String serviceName) { try { // This can fail in the case of running against a JDK // with out of date JVMCI jars. In that case, just print // a warning sinc the expectation is that the jars will be // updated later on. return Class.forName(serviceName, false, FilterTypes.class.getClassLoader()); } catch (ClassNotFoundException e) { // Must be stderr to avoid polluting the result being // written to stdout. System.err.println(e); return null; } } }