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121 changes: 121 additions & 0 deletions
121
src/main/java/dev/su5ed/sinytra/connector/transformer/jar/EarlyJSCoremodTransformer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| package dev.su5ed.sinytra.connector.transformer.jar; | ||
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|
||
| import com.mojang.logging.LogUtils; | ||
| import cpw.mods.modlauncher.ClassTransformer; | ||
| import cpw.mods.modlauncher.LaunchPluginHandler; | ||
| import cpw.mods.modlauncher.TransformStore; | ||
| import cpw.mods.modlauncher.TransformationServiceDecorator; | ||
| import cpw.mods.modlauncher.TransformingClassLoader; | ||
| import cpw.mods.modlauncher.api.IEnvironment; | ||
| import cpw.mods.modlauncher.api.ITransformationService; | ||
| import cpw.mods.modlauncher.api.ITransformer; | ||
| import cpw.mods.modlauncher.api.ITransformerActivity; | ||
| import net.minecraftforge.coremod.CoreModProvider; | ||
| import net.minecraftforge.fart.api.ClassProvider; | ||
| import net.minecraftforge.fml.loading.moddiscovery.CoreModFile; | ||
| import net.minecraftforge.fml.loading.moddiscovery.ModFile; | ||
| import net.minecraftforge.fml.loading.moddiscovery.ModFileParser; | ||
| import net.minecraftforge.fml.unsafe.UnsafeHacks; | ||
| import net.minecraftforge.forgespi.locating.IModFile; | ||
| import org.jetbrains.annotations.NotNull; | ||
| import org.slf4j.Logger; | ||
|
|
||
| import java.io.IOException; | ||
| import java.lang.invoke.MethodHandle; | ||
| import java.lang.invoke.MethodHandles; | ||
| import java.lang.invoke.MethodType; | ||
| import java.lang.reflect.Constructor; | ||
| import java.lang.reflect.Field; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Optional; | ||
| import java.util.Set; | ||
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|
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| import static cpw.mods.modlauncher.api.LamdbaExceptionUtils.uncheck; | ||
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| public class EarlyJSCoremodTransformer implements ClassProvider { | ||
| private static final MethodHandle GET_CORE_MODS = uncheck(() -> MethodHandles.privateLookupIn(ModFileParser.class, MethodHandles.lookup()).findStatic(ModFileParser.class, "getCoreMods", MethodType.methodType(List.class, ModFile.class))); | ||
| private static final MethodHandle TRANSFORM = uncheck(() -> MethodHandles.privateLookupIn(ClassTransformer.class, MethodHandles.lookup()).findVirtual(ClassTransformer.class, "transform", MethodType.methodType(byte[].class, byte[].class, String.class, String.class))); | ||
| private static final Logger LOGGER = LogUtils.getLogger(); | ||
|
|
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| private final ClassProvider provider; | ||
| private final ClassTransformer transformer; | ||
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| public static EarlyJSCoremodTransformer create(ClassProvider classProvider, Iterable<IModFile> loadedMods) { | ||
| try { | ||
| CoreModProvider provider = new CoreModProvider(); | ||
| for (IModFile mf : loadedMods) { | ||
| List<CoreModFile> list = (List<CoreModFile>) GET_CORE_MODS.invoke((ModFile) mf); | ||
| if (!list.isEmpty()) { | ||
| for (CoreModFile f : list) { | ||
| provider.addCoreMod(f); | ||
| } | ||
| } | ||
| } | ||
| List<ITransformer<?>> transformers = provider.getCoreModTransformers(); | ||
|
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| TransformStore transformStore = new TransformStore(); | ||
| ITransformationService service = new DummyService(transformers); | ||
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| Constructor<TransformationServiceDecorator> cst = TransformationServiceDecorator.class.getDeclaredConstructor(ITransformationService.class); | ||
| cst.setAccessible(true); | ||
| TransformationServiceDecorator decorator = cst.newInstance(service); | ||
| decorator.gatherTransformers(transformStore); | ||
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| LaunchPluginHandler plugins = UnsafeHacks.newInstance(LaunchPluginHandler.class); | ||
| Field pluginsField = LaunchPluginHandler.class.getDeclaredField("plugins"); | ||
| pluginsField.setAccessible(true); | ||
| pluginsField.set(plugins, new HashMap<>()); | ||
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| Constructor<ClassTransformer> xformCst = ClassTransformer.class.getDeclaredConstructor(TransformStore.class, LaunchPluginHandler.class, TransformingClassLoader.class); | ||
| xformCst.setAccessible(true); | ||
| ClassTransformer classTransformer = xformCst.newInstance(transformStore, plugins, null); | ||
| return new EarlyJSCoremodTransformer(classProvider, classTransformer); | ||
| } catch (Throwable t) { | ||
| throw new RuntimeException(t); | ||
| } | ||
| } | ||
|
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| public EarlyJSCoremodTransformer(ClassProvider provider, ClassTransformer transformer) { | ||
| this.provider = provider; | ||
| this.transformer = transformer; | ||
| } | ||
|
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| @Override | ||
| public Optional<? extends IClassInfo> getClass(String s) { | ||
| return this.provider.getClass(s); | ||
| } | ||
|
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| @Override | ||
| public Optional<byte[]> getClassBytes(String s) { | ||
| return this.provider.getClassBytes(s) | ||
| .map(bytes -> { | ||
| try { | ||
| return (byte[]) TRANSFORM.invoke(this.transformer, bytes, s, ITransformerActivity.COMPUTING_FRAMES_REASON); | ||
| } catch (Throwable t) { | ||
| LOGGER.error("Error transforming class " + s, t); | ||
| return bytes; | ||
| } | ||
| }); | ||
| } | ||
|
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| @Override | ||
| public void close() throws IOException { | ||
| this.provider.close(); | ||
| } | ||
|
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| @SuppressWarnings("rawtypes") | ||
| private record DummyService(List transformers) implements ITransformationService { | ||
| @Override | ||
| @NotNull | ||
| public String name() { | ||
| return "connector_early_js_coremods"; | ||
| } | ||
|
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| @Override | ||
| public void initialize(IEnvironment environment) {} | ||
|
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| @Override | ||
| public void onLoad(IEnvironment env, Set<String> otherServices) {} | ||
| } | ||
| } |
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