69 lines
3.2 KiB
Java
69 lines
3.2 KiB
Java
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package io.gitlab.jfronny.libjf.entry;
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import it.unimi.dsi.fastutil.objects.ReferenceArrayList;
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import net.fabricmc.loader.ModContainer;
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import net.fabricmc.loader.api.FabricLoader;
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import net.fabricmc.loader.metadata.EntrypointMetadata;
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import java.lang.reflect.InvocationTargetException;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import java.util.function.Consumer;
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public class DynamicEntry {
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/**
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* Execute an entrypoint.
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*
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* @param name the name of the entrypoint to execute.
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* @param entrypointType the entrypoint type.
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* @param onExecute entrypoint execution callback with an instance of the entrypoint type.
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* @param <T> the entrypoint type.
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*/
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public static <T> void execute(final String name, final Class<T> entrypointType, final Consumer<ConsumableEntrypoint<T>> onExecute) {
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final List<ConsumableEntrypoint<T>> targets = new ArrayList<>();
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final ReferenceArrayList<EntrypointContainer> entrypoints = getEntrypointTargets(name);
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for (final EntrypointContainer entrypoint : entrypoints) {
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try {
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targets.add(new ConsumableEntrypoint<>(
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entrypointType.cast(Class.forName(entrypoint.entrypoint).getConstructor().newInstance()),
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entrypoint.mod
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));
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} catch (final ClassNotFoundException exception) {
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throw new IllegalArgumentException(String.format("class %s specified in the %s entrypoint of mod %s does not exist", entrypoint.entrypoint, name, entrypoint.mod), exception);
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} catch (final IllegalAccessException | InstantiationException | NoSuchMethodException exception) {
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throw new IllegalStateException(String.format("class %s specified in the %s entrypoint of mod %s cannot be instantiated", entrypoint.entrypoint, name, entrypoint.mod), exception);
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} catch (final InvocationTargetException exception) {
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throw new RuntimeException(String.format("an error was encountered during the instantiation of the %s entrypoint class %s", name, entrypoint.entrypoint), exception);
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}
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}
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for (ConsumableEntrypoint<T> target : targets) {
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onExecute.accept(target);
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}
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}
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private static ReferenceArrayList<EntrypointContainer> getEntrypointTargets(final String entrypoint) {
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final ReferenceArrayList<EntrypointContainer> entrypoints = ReferenceArrayList.wrap(new EntrypointContainer[1], 0);
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for (final ModContainer mod : (Collection<ModContainer>) (Object) FabricLoader.getInstance().getAllMods()) {
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final List<EntrypointMetadata> modEntrypoints = mod.getInfo().getEntrypoints(entrypoint);
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if (modEntrypoints != null) {
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for (final EntrypointMetadata metadata : modEntrypoints) {
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entrypoints.add(new EntrypointContainer(metadata.getValue(), mod.getMetadata().getId()));
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}
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}
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}
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return entrypoints;
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}
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record EntrypointContainer(String entrypoint, String mod) {
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}
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public record ConsumableEntrypoint<T>(T instance, String modId) {
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}
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}
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