1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package jdk.tools.jaotc.collect; 25 26 import jdk.tools.jaotc.LoadedClass; 27 28 import java.util.ArrayList; 29 import java.util.List; 30 31 public final class ClassSearch { 32 private final List<SourceProvider> providers = new ArrayList<>(); 33 34 public void addProvider(SourceProvider provider) { 35 providers.add(provider); 36 } 37 38 public List<LoadedClass> search(List<SearchFor> search, SearchPath searchPath) { 39 List<LoadedClass> loaded = new ArrayList<>(); 40 41 List<ClassSource> sources = new ArrayList<>(); 42 43 for (SearchFor entry : search) { 44 sources.add(findSource(entry, searchPath)); 45 } 46 47 for (ClassSource source : sources) { 48 source.eachClass((name, loader) -> loaded.add(loadClass(name, loader))); 49 } 50 51 return loaded; 52 } 53 54 private static LoadedClass loadClass(String name, ClassLoader loader) { 55 try { 56 Class<?> clzz = loader.loadClass(name); 57 return new LoadedClass(name, clzz); 58 } catch (ClassNotFoundException e) { 59 throw new InternalError("Failed to load with: " + loader, e); 60 } 61 } 62 63 private ClassSource findSource(SearchFor searchFor, SearchPath searchPath) { 64 ClassSource found = null; 65 66 for (SourceProvider provider : providers) { 67 if (!searchFor.isUnknown() && !provider.supports(searchFor.getType())) { 68 continue; 69 } 70 71 ClassSource source = provider.findSource(searchFor.getName(), searchPath); 72 if (source != null) { 73 if (found != null) { 74 throw new InternalError("Multiple possible sources: " + source + " and: " + found); 75 } 76 found = source; 77 } 78 } 79 80 if (found == null) { 81 throw new InternalError("Failed to find " + searchFor.getType() + " file: " + searchFor.getName()); 82 } 83 return found; 84 } 85 86 public static List<SearchFor> makeList(String type, String argument) { 87 List<SearchFor> list = new ArrayList<>(); 88 String[] elements = argument.split(":"); 89 for (String element : elements) { 90 list.add(new SearchFor(element, type)); 91 } 92 return list; 93 } 94 }