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/*
* This file is part of spark.
*
* Copyright (c) lucko (Luck) <luck@lucko.me>
* Copyright (c) contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package me.lucko.spark.fabric;
import com.google.common.collect.ImmutableMap;
import me.lucko.spark.common.sampler.source.ClassSourceLookup;
import me.lucko.spark.common.util.ClassFinder;
import me.lucko.spark.fabric.smap.MixinUtils;
import me.lucko.spark.fabric.smap.SourceMap;
import me.lucko.spark.fabric.smap.SourceMapProvider;
import net.fabricmc.loader.api.FabricLoader;
import net.fabricmc.loader.api.ModContainer;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.objectweb.asm.Type;
import org.spongepowered.asm.mixin.FabricUtil;
import org.spongepowered.asm.mixin.extensibility.IMixinConfig;
import org.spongepowered.asm.mixin.transformer.Config;
import org.spongepowered.asm.mixin.transformer.meta.MixinMerged;
import java.lang.reflect.Method;
import java.net.URI;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Map;
public class FabricClassSourceLookup extends ClassSourceLookup.ByCodeSource {
private final ClassFinder classFinder = new ClassFinder();
private final SourceMapProvider smapProvider = new SourceMapProvider();
private final Path modsDirectory;
private final Map<String, String> pathToModMap;
public FabricClassSourceLookup() {
FabricLoader loader = FabricLoader.getInstance();
this.modsDirectory = loader.getGameDir().resolve("mods").toAbsolutePath().normalize();
this.pathToModMap = constructPathToModIdMap(loader.getAllMods());
}
@Override
public String identifyFile(Path path) {
String id = this.pathToModMap.get(path.toAbsolutePath().normalize().toString());
if (id != null) {
return id;
}
if (!path.startsWith(this.modsDirectory)) {
return null;
}
return super.identifyFileName(this.modsDirectory.relativize(path).toString());
}
@Override
public @Nullable String identify(MethodCall methodCall) throws Exception {
String className = methodCall.getClassName();
String methodName = methodCall.getMethodName();
String methodDesc = methodCall.getMethodDescriptor();
if (className.equals("native") || methodName.equals("<init>") || methodName.equals("<clinit>")) {
return null;
}
Class<?> clazz = this.classFinder.findClass(className);
if (clazz == null) {
return null;
}
Class<?>[] params = getParameterTypesForMethodDesc(methodDesc);
Method reflectMethod = clazz.getDeclaredMethod(methodName, params);
MixinMerged mixinMarker = reflectMethod.getDeclaredAnnotation(MixinMerged.class);
if (mixinMarker == null) {
return null;
}
return modIdFromMixinClass(mixinMarker.mixin());
}
@Override
public @Nullable String identify(MethodCallByLine methodCall) throws Exception {
String className = methodCall.getClassName();
String methodName = methodCall.getMethodName();
int lineNumber = methodCall.getLineNumber();
if (className.equals("native") || methodName.equals("<init>") || methodName.equals("<clinit>")) {
return null;
}
SourceMap smap = this.smapProvider.getSourceMap(className);
if (smap == null) {
return null;
}
int[] inputLineInfo = smap.getReverseLineMapping().get(lineNumber);
if (inputLineInfo == null || inputLineInfo.length == 0) {
return null;
}
for (int fileInfoIds : inputLineInfo) {
SourceMap.FileInfo inputFileInfo = smap.getFileInfo().get(fileInfoIds);
if (inputFileInfo == null) {
continue;
}
String path = inputFileInfo.path();
if (path.endsWith(".java")) {
path = path.substring(0, path.length() - 5);
}
String possibleMixinClassName = path.replace('/', '.');
if (possibleMixinClassName.equals(className)) {
continue;
}
return modIdFromMixinClass(possibleMixinClassName);
}
return null;
}
private static String modIdFromMixinClass(String mixinClassName) {
for (Config config : MixinUtils.getMixinConfigs().values()) {
IMixinConfig mixinConfig = config.getConfig();
if (mixinClassName.startsWith(mixinConfig.getMixinPackage())) {
return mixinConfig.getDecoration(FabricUtil.KEY_MOD_ID);
}
}
return null;
}
private Class<?>[] getParameterTypesForMethodDesc(String methodDesc) {
Type methodType = Type.getMethodType(methodDesc);
Class<?>[] params = new Class[methodType.getArgumentTypes().length];
Type[] argumentTypes = methodType.getArgumentTypes();
for (int i = 0, argumentTypesLength = argumentTypes.length; i < argumentTypesLength; i++) {
Type argumentType = argumentTypes[i];
params[i] = getClassFromType(argumentType);
}
return params;
}
private Class<?> getClassFromType(Type type) {
return switch (type.getSort()) {
case Type.VOID -> void.class;
case Type.BOOLEAN -> boolean.class;
case Type.CHAR -> char.class;
case Type.BYTE -> byte.class;
case Type.SHORT -> short.class;
case Type.INT -> int.class;
case Type.FLOAT -> float.class;
case Type.LONG -> long.class;
case Type.DOUBLE -> double.class;
case Type.ARRAY -> {
final Class<?> classFromType = getClassFromType(type.getElementType());
Class<?> result = classFromType;
if (classFromType != null) {
for (int i = 0; i < type.getDimensions(); i++) {
result = result.arrayType();
}
}
yield result;
}
case Type.OBJECT -> this.classFinder.findClass(type.getClassName());
default -> null;
};
}
private static Map<String, String> constructPathToModIdMap(Collection<ModContainer> mods) {
ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
for (ModContainer mod : mods) {
String modId = mod.getMetadata().getId();
if (modId.equals("java")) {
continue;
}
for (Path path : mod.getRootPaths()) {
URI uri = path.toUri();
if (uri.getScheme().equals("jar") && path.toString().equals("/")) { // ZipFileSystem
String zipFilePath = path.getFileSystem().toString();
builder.put(zipFilePath, modId);
} else {
builder.put(path.toAbsolutePath().normalize().toString(), modId);
}
}
}
return builder.build();
}
}
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