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Add Vineflower decompiler (FabricMC#541)
* Add Vineflower integration * Fix some confusing names * Rename method to reflect visitor pattern naming schemes * Remove dead null check
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7 changes: 7 additions & 0 deletions
7
enigma/src/main/java/cuchaz/enigma/classprovider/ClassProvider.java
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127 changes: 127 additions & 0 deletions
127
enigma/src/main/java/cuchaz/enigma/source/vineflower/VineflowerContextSource.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| package cuchaz.enigma.source.vineflower; | ||
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| import java.io.ByteArrayInputStream; | ||
| import java.io.InputStream; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
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| import org.jetbrains.java.decompiler.main.extern.IContextSource; | ||
| import org.jetbrains.java.decompiler.main.extern.IResultSaver; | ||
| import org.objectweb.asm.tree.ClassNode; | ||
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| import cuchaz.enigma.classprovider.ClassProvider; | ||
| import cuchaz.enigma.utils.AsmUtil; | ||
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| class VineflowerContextSource implements IContextSource { | ||
| private final IContextSource classpathSource = new ClasspathSource(); | ||
| private final ClassProvider classProvider; | ||
| private final String className; | ||
| private Entries entries; | ||
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| VineflowerContextSource(ClassProvider classProvider, String className) { | ||
| this.classProvider = classProvider; | ||
| this.className = className; | ||
| } | ||
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| public IContextSource getClasspath() { | ||
| return classpathSource; | ||
| } | ||
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| @Override | ||
| public String getName() { | ||
| return "Enigma-provided context for class " + className; | ||
| } | ||
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| @Override | ||
| public Entries getEntries() { | ||
| computeEntriesIfNecessary(); | ||
| return entries; | ||
| } | ||
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| private void computeEntriesIfNecessary() { | ||
| if (entries != null) { | ||
| return; | ||
| } | ||
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| synchronized (this) { | ||
| if (entries != null) return; | ||
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| List<String> classNames = new ArrayList<>(); | ||
| classNames.add(className); | ||
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| int dollarIndex = className.indexOf('$'); | ||
| String outermostClass = dollarIndex == -1 ? className : className.substring(0, className.indexOf('$')); | ||
| String outermostClassSuffixed = outermostClass + "$"; | ||
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| for (String currentClass : classProvider.getClassNames()) { | ||
| if (currentClass.startsWith(outermostClassSuffixed) && !currentClass.equals(className)) { | ||
| classNames.add(currentClass); | ||
| } | ||
| } | ||
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| List<Entry> classes = classNames.stream() | ||
| .map(Entry::atBase) | ||
| .toList(); | ||
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| entries = new Entries(classes, Collections.emptyList(), Collections.emptyList()); | ||
| } | ||
| } | ||
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| @Override | ||
| public InputStream getInputStream(String resource) { | ||
| ClassNode node = classProvider.get(resource.substring(0, resource.lastIndexOf(".class"))); | ||
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| if (node == null) { | ||
| return null; | ||
| } | ||
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| return new ByteArrayInputStream(AsmUtil.nodeToBytes(node)); | ||
| } | ||
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| @Override | ||
| public IOutputSink createOutputSink(IResultSaver saver) { | ||
| return new IOutputSink() { | ||
| @Override | ||
| public void begin() { } | ||
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| @Override | ||
| public void acceptClass(String qualifiedName, String fileName, String content, int[] mapping) { | ||
| if (qualifiedName.equals(VineflowerContextSource.this.className)) { | ||
| saver.saveClassFile(null, qualifiedName, fileName, content, mapping); | ||
| } | ||
| } | ||
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| @Override | ||
| public void acceptDirectory(String directory) { } | ||
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| @Override | ||
| public void acceptOther(String path) { } | ||
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| @Override | ||
| public void close() { } | ||
| }; | ||
| } | ||
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| public class ClasspathSource implements IContextSource { | ||
| @Override | ||
| public String getName() { | ||
| return "Enigma-provided classpath context for " + VineflowerContextSource.this.className; | ||
| } | ||
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| @Override | ||
| public Entries getEntries() { | ||
| return Entries.EMPTY; | ||
| } | ||
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| @Override | ||
| public boolean isLazy() { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public InputStream getInputStream(String resource) { | ||
| return VineflowerContextSource.this.getInputStream(resource); | ||
| } | ||
| } | ||
| } |
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