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/*
* This file is part of fabric-loom, licensed under the MIT License (MIT).
*
* Copyright (c) 2021 FabricMC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.fabricmc.loom.util.aw2at;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import org.cadixdev.at.AccessChange;
import org.cadixdev.at.AccessTransform;
import org.cadixdev.at.AccessTransformSet;
import org.cadixdev.at.ModifierChange;
import org.cadixdev.bombe.type.signature.MethodSignature;
import org.gradle.api.Project;
import org.gradle.api.tasks.SourceSet;
import org.gradle.api.tasks.SourceSetContainer;
import net.fabricmc.accesswidener.AccessWidenerReader;
import net.fabricmc.accesswidener.AccessWidenerVisitor;
import net.fabricmc.loom.LoomGradleExtension;
import net.fabricmc.loom.task.RemapJarTask;
/**
* Converts AW files to AT files.
*
* @author Juuz
*/
public final class Aw2At {
public static void setup(Project project, RemapJarTask remapJar) {
LoomGradleExtension extension = LoomGradleExtension.get(project);
if (extension.getAccessWidenerPath().isPresent()) {
// Find the relative AW file name
String awName = null;
Path awPath = extension.getAccessWidenerPath().get().getAsFile().toPath();
SourceSetContainer sourceSets = project.getExtensions().getByType(SourceSetContainer.class);
SourceSet main = sourceSets.getByName(SourceSet.MAIN_SOURCE_SET_NAME);
boolean found = false;
for (File srcDir : main.getResources().getSrcDirs()) {
Path srcDirPath = srcDir.toPath().toAbsolutePath();
if (awPath.startsWith(srcDirPath)) {
awName = srcDirPath.relativize(awPath).toString().replace(File.separator, "/");
found = true;
break;
}
}
if (!found) {
awName = awPath.getFileName().toString();
}
remapJar.getAtAccessWideners().add(awName);
}
remapJar.getAtAccessWideners().addAll(extension.getForge().getExtraAccessWideners());
}
public static AccessTransformSet toAccessTransformSet(BufferedReader reader) throws IOException {
AccessTransformSet atSet = AccessTransformSet.create();
new AccessWidenerReader(new AccessWidenerVisitor() {
@Override
public void visitClass(String name, AccessWidenerReader.AccessType access, boolean transitive) {
atSet.getOrCreateClass(name).merge(toAt(access));
}
@Override
public void visitMethod(String owner, String name, String descriptor, AccessWidenerReader.AccessType access, boolean transitive) {
atSet.getOrCreateClass(owner).mergeMethod(MethodSignature.of(name, descriptor), toAt(access));
}
@Override
public void visitField(String owner, String name, String descriptor, AccessWidenerReader.AccessType access, boolean transitive) {
atSet.getOrCreateClass(owner).mergeField(name, toAt(access));
}
}).read(reader);
return atSet;
}
private static AccessTransform toAt(AccessWidenerReader.AccessType access) {
return switch (access) {
// FIXME: This behaviour doesn't match what the actual AW does for methods.
// - accessible makes the method final if it was private
// - extendable makes the method protected if it was (package-)private
// Neither of these can be achieved with Forge ATs without using bytecode analysis.
// However, this might be good enough for us. (The effects only apply in prod.)
case ACCESSIBLE -> AccessTransform.of(AccessChange.PUBLIC);
case EXTENDABLE -> AccessTransform.of(AccessChange.PUBLIC, ModifierChange.REMOVE);
case MUTABLE -> AccessTransform.of(ModifierChange.REMOVE);
};
}
}
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