| /* |
| * Copyright (c) 2017, 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 jdk.tools.jaotc.collect; |
| |
| import jdk.tools.jaotc.LoadedClass; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.function.BiConsumer; |
| |
| public final class ClassSearch { |
| private final List<SourceProvider> providers = new ArrayList<>(); |
| |
| public void addProvider(SourceProvider provider) { |
| providers.add(provider); |
| } |
| |
| public List<LoadedClass> search(List<SearchFor> search, SearchPath searchPath) { |
| return search(search, searchPath, (s, t) -> { throw new InternalError(s + " : " + t, t); } ); |
| } |
| |
| public List<LoadedClass> search(List<SearchFor> search, SearchPath searchPath, BiConsumer<String, Throwable> classLoadingErrorsHandler) { |
| List<LoadedClass> loaded = new ArrayList<>(); |
| |
| List<ClassSource> sources = new ArrayList<>(); |
| |
| for (SearchFor entry : search) { |
| sources.add(findSource(entry, searchPath, classLoadingErrorsHandler)); |
| } |
| |
| for (ClassSource source : sources) { |
| if (source != null) { |
| source.eachClass((name, loader) -> { |
| LoadedClass x = loadClass(name, loader, classLoadingErrorsHandler); |
| if (x != null) { loaded.add(x); } |
| }); |
| } |
| } |
| |
| return loaded; |
| } |
| |
| private static LoadedClass loadClass(String name, ClassLoader loader, BiConsumer<String, Throwable> classLoadingErrorsHandler) { |
| try { |
| Class<?> clzz = loader.loadClass(name); |
| return new LoadedClass(name, clzz); |
| } catch (Throwable e) { |
| classLoadingErrorsHandler.accept(name, e); |
| return null; |
| } |
| } |
| |
| private ClassSource findSource(SearchFor searchFor, SearchPath searchPath, BiConsumer<String, Throwable> classLoadingErrorsHandler) { |
| ClassSource found = null; |
| |
| for (SourceProvider provider : providers) { |
| if (!searchFor.isUnknown() && !provider.supports(searchFor.getType())) { |
| continue; |
| } |
| ClassSource source = null; |
| try { |
| source = provider.findSource(searchFor.getName(), searchPath); |
| } catch (Throwable e) { |
| classLoadingErrorsHandler.accept(searchFor.getName(), e); |
| } |
| if (source != null) { |
| if (found != null) { |
| throw new InternalError("Multiple possible sources: " + source + " and: " + found); |
| } |
| found = source; |
| } |
| } |
| |
| if (found == null) { |
| classLoadingErrorsHandler.accept(searchFor.getName(), new InternalError("Failed to find " + searchFor.getType() + " file: " + searchFor.getName())); |
| } |
| return found; |
| } |
| |
| public static List<SearchFor> makeList(String type, String argument) { |
| List<SearchFor> list = new ArrayList<>(); |
| String[] elements = argument.split(":"); |
| for (String element : elements) { |
| list.add(new SearchFor(element, type)); |
| } |
| return list; |
| } |
| } |