Add Experimental CFR support. Line numbers and comments are not currently supported.
modmuss50
parent
88f5894570
commit
cb52cabb18
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@ -57,6 +57,7 @@ dependencies {
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// decompilers
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implementation ('net.fabricmc:procyon-fabric-compilertools:0.5.35.13')
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implementation ('org.jetbrains:intellij-fernflower:1.2.1.16')
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implementation ('org.benf:cfr:0.150')
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// source code remapping
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implementation ('org.cadixdev:mercury:0.1.0.fabric-SNAPSHOT')
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@ -31,6 +31,7 @@ import org.gradle.api.Project;
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import org.gradle.api.tasks.TaskContainer;
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import net.fabricmc.loom.api.decompilers.LoomDecompiler;
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import net.fabricmc.loom.decompilers.cfr.FabricCFRDecompiler;
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import net.fabricmc.loom.decompilers.fernflower.FabricFernFlowerDecompiler;
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import net.fabricmc.loom.providers.MappingsProvider;
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import net.fabricmc.loom.task.CleanEclipseRunsTask;
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@ -127,6 +128,7 @@ public class LoomGradlePlugin extends AbstractPlugin {
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LoomGradleExtension extension = project.getExtensions().getByType(LoomGradleExtension.class);
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extension.addDecompiler(new FabricFernFlowerDecompiler(project));
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extension.addDecompiler(new FabricCFRDecompiler(project));
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project.afterEvaluate((p) -> {
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for (LoomDecompiler decompiler : extension.decompilers) {
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@ -0,0 +1,241 @@
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/*
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* This file is part of fabric-loom, licensed under the MIT License (MIT).
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*
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* Copyright (c) 2016, 2017, 2018 FabricMC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package net.fabricmc.loom.decompilers.cfr;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.Future;
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import java.util.function.Function;
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import java.util.jar.Attributes;
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import java.util.jar.JarEntry;
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import java.util.jar.JarOutputStream;
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import java.util.jar.Manifest;
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import java.util.stream.Collectors;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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import com.google.common.base.Charsets;
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import com.google.common.collect.ImmutableMap;
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import com.google.common.io.ByteStreams;
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import org.benf.cfr.reader.api.CfrDriver;
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import org.benf.cfr.reader.api.ClassFileSource;
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import org.benf.cfr.reader.api.OutputSinkFactory;
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import org.benf.cfr.reader.api.SinkReturns;
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import org.benf.cfr.reader.bytecode.analysis.parse.utils.Pair;
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import org.gradle.api.Project;
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import org.gradle.api.internal.project.ProjectInternal;
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import org.gradle.internal.logging.progress.ProgressLogger;
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import org.gradle.internal.logging.progress.ProgressLoggerFactory;
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import org.gradle.internal.service.ServiceRegistry;
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import net.fabricmc.loom.api.decompilers.DecompilationMetadata;
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import net.fabricmc.loom.api.decompilers.LoomDecompiler;
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public class FabricCFRDecompiler implements LoomDecompiler {
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private final Project project;
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public FabricCFRDecompiler(Project project) {
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this.project = project;
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}
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@Override
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public String name() {
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return "ExperimentalCfr";
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}
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@Override
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public void decompile(Path compiledJar, Path sourcesDestination, Path linemapDestination, DecompilationMetadata metaData) {
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project.getLogger().warn("!!!! The CFR decompiler support is currently incomplete, line numbers will not match up and there will be no javadocs in the generated source.");
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// Setups the multi threaded logger, the thread id is used as the key to the ProgressLogger's
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ServiceRegistry registry = ((ProjectInternal) project).getServices();
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ProgressLoggerFactory factory = registry.get(ProgressLoggerFactory.class);
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ProgressLogger progressGroup = factory.newOperation(getClass()).setDescription("Decompile");
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Map<Long, ProgressLogger> loggerMap = new ConcurrentHashMap<>();
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Function<Long, ProgressLogger> createLogger = (threadId) -> {
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ProgressLogger pl = factory.newOperation(getClass(), progressGroup);
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pl.setDescription("decompile worker");
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pl.started();
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return pl;
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};
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progressGroup.started();
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Manifest manifest = new Manifest();
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manifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
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Set<String> addedDirectories = new HashSet<>();
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try (OutputStream fos = Files.newOutputStream(sourcesDestination); JarOutputStream jos = new JarOutputStream(fos, manifest); ZipFile inputZip = new ZipFile(compiledJar.toFile())) {
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CfrDriver driver = new CfrDriver.Builder()
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.withOptions(ImmutableMap.of(
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"renameillegalidents", "true",
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"trackbytecodeloc", "true"
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))
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.withClassFileSource(new ClassFileSource() {
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@Override
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public void informAnalysisRelativePathDetail(String usePath, String classFilePath) {
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}
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@Override
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public Collection<String> addJar(String jarPath) {
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return null;
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}
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@Override
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public String getPossiblyRenamedPath(String path) {
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return path;
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}
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@Override
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public Pair<byte[], String> getClassFileContent(String path) throws IOException {
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ZipEntry zipEntry = inputZip.getEntry(path);
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if (zipEntry == null) {
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throw new FileNotFoundException(path);
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}
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try (InputStream inputStream = inputZip.getInputStream(zipEntry)) {
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return Pair.make(ByteStreams.toByteArray(inputStream), path);
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}
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}
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})
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.withOutputSink(new OutputSinkFactory() {
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@Override
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public List<SinkClass> getSupportedSinks(SinkType sinkType, Collection<SinkClass> available) {
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switch (sinkType) {
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case PROGRESS:
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return Collections.singletonList(SinkClass.STRING);
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case JAVA:
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return Collections.singletonList(SinkClass.DECOMPILED);
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default:
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return Collections.emptyList();
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}
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}
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@SuppressWarnings("unchecked")
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@Override
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public <T> Sink<T> getSink(SinkType sinkType, SinkClass sinkClass) {
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switch (sinkType) {
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case PROGRESS:
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return (p) -> project.getLogger().debug((String) p);
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case JAVA:
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return (Sink<T>) decompiledSink(jos, addedDirectories);
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case EXCEPTION:
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return (e) -> project.getLogger().error((String) e);
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}
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return null;
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}
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})
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.build();
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List<String> classes = Collections.list(inputZip.entries()).stream()
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.map(ZipEntry::getName)
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.filter(input -> input.endsWith(".class"))
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.collect(Collectors.toList());
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ExecutorService executorService = Executors.newFixedThreadPool(metaData.numberOfThreads);
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List<Future<?>> futures = new LinkedList<>();
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for (String clazz : classes) {
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futures.add(executorService.submit(() -> {
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loggerMap.computeIfAbsent(Thread.currentThread().getId(), createLogger).progress(clazz);
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driver.analyse(Collections.singletonList(clazz));
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}));
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}
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for (Future<?> future : futures) {
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future.get();
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}
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} catch (IOException | InterruptedException | ExecutionException e) {
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throw new RuntimeException("Failed to decompile", e);
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} finally {
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loggerMap.forEach((threadId, progressLogger) -> progressLogger.completed());
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}
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}
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private static OutputSinkFactory.Sink<SinkReturns.Decompiled> decompiledSink(JarOutputStream jos, Set<String> addedDirectories) {
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return decompiled -> {
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String filename = decompiled.getPackageName().replace('.', '/');
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if (!filename.isEmpty()) filename += "/";
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filename += decompiled.getClassName() + ".java";
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byte[] data = decompiled.getJava().getBytes(Charsets.UTF_8);
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writeToJar(filename, data, jos, addedDirectories);
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};
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}
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// TODO move to task queue?
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private static synchronized void writeToJar(String filename, byte[] data, JarOutputStream jos, Set<String> addedDirectories) {
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String[] path = filename.split("/");
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String pathPart = "";
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for (int i = 0; i < path.length - 1; i++) {
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pathPart += path[i] + "/";
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if (addedDirectories.add(pathPart)) {
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JarEntry entry = new JarEntry(pathPart);
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entry.setTime(new Date().getTime());
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try {
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jos.putNextEntry(entry);
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jos.closeEntry();
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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JarEntry entry = new JarEntry(filename);
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entry.setTime(new Date().getTime());
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entry.setSize(data.length);
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try {
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jos.putNextEntry(entry);
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jos.write(data);
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jos.closeEntry();
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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