1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/lambdaShapes/org/openjdk/tests/separate/DirectedClassLoader.java Tue Nov 20 09:58:55 2012 -0800
1.3 @@ -0,0 +1,101 @@
1.4 +/*
1.5 + * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package org.openjdk.tests.separate;
1.30 +
1.31 +import java.util.HashMap;
1.32 +import java.io.File;
1.33 +import java.io.FileInputStream;
1.34 +import java.io.IOException;
1.35 +
1.36 +class DirectedClassLoader extends ClassLoader {
1.37 +
1.38 + private HashMap<String,File> loadLocations;
1.39 + private File defaultLocation;
1.40 + private ClassFilePreprocessor[] preprocessors;
1.41 +
1.42 + public DirectedClassLoader(
1.43 + HashMap<String,File> locations, File fallback,
1.44 + ClassFilePreprocessor ... preprocessors) {
1.45 + loadLocations = new HashMap<>(locations);
1.46 + defaultLocation = fallback;
1.47 + this.preprocessors = preprocessors;
1.48 + }
1.49 +
1.50 + public DirectedClassLoader(
1.51 + File fallback, ClassFilePreprocessor ... preprocessors) {
1.52 + loadLocations = new HashMap<>();
1.53 + defaultLocation = fallback;
1.54 + this.preprocessors = preprocessors;
1.55 + }
1.56 +
1.57 + public DirectedClassLoader(ClassFilePreprocessor ... preprocessors) {
1.58 + this((File)null, preprocessors);
1.59 + }
1.60 +
1.61 + public void setDefaultLocation(File dir) { this.defaultLocation = dir; }
1.62 + public void setLocationFor(String name, File dir) {
1.63 + loadLocations.put(name, dir);
1.64 + }
1.65 +
1.66 + @Override
1.67 + protected Class<?> findClass(String name) {
1.68 + String path = name.replace(".", File.separator) + ".class";
1.69 +
1.70 + File location = loadLocations.get(name);
1.71 + if (location == null || !(new File(location, path)).exists()) {
1.72 + File def = new File(defaultLocation, path);
1.73 + if (def.exists()) {
1.74 + return defineFrom(name, new File(location, path));
1.75 + }
1.76 + } else {
1.77 + return defineFrom(name, new File(location, path));
1.78 + }
1.79 + return null;
1.80 + }
1.81 +
1.82 + private Class<?> defineFrom(String name, File file) {
1.83 + FileInputStream fis = null;
1.84 + try {
1.85 + try {
1.86 + fis = new FileInputStream(file);
1.87 + byte[] bytes = new byte[fis.available()];
1.88 + int read = fis.read(bytes);
1.89 + if (read != bytes.length) {
1.90 + return null;
1.91 + }
1.92 + if (preprocessors != null) {
1.93 + for (ClassFilePreprocessor cfp : preprocessors) {
1.94 + bytes = cfp.preprocess(name, bytes);
1.95 + }
1.96 + }
1.97 + return defineClass(name, bytes, 0, bytes.length);
1.98 + } finally {
1.99 + fis.close();
1.100 + }
1.101 + } catch (IOException e) {}
1.102 + return null;
1.103 + }
1.104 +}
