From e50d61850b0b7bc0005259d343f0c3eb729966e2 Mon Sep 17 00:00:00 2001
From: zaaarf <me@zaaarf.foo>
Date: Wed, 24 Jan 2024 17:55:10 +0100
Subject: feat: initial (broken) commit

---
 src/main/java/ftbsc/lll/mixin/LilleroMixin.java | 124 ++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 src/main/java/ftbsc/lll/mixin/LilleroMixin.java

(limited to 'src/main/java/ftbsc/lll/mixin/LilleroMixin.java')

diff --git a/src/main/java/ftbsc/lll/mixin/LilleroMixin.java b/src/main/java/ftbsc/lll/mixin/LilleroMixin.java
new file mode 100644
index 0000000..835a77f
--- /dev/null
+++ b/src/main/java/ftbsc/lll/mixin/LilleroMixin.java
@@ -0,0 +1,124 @@
+package ftbsc.lll.mixin;
+
+import ftbsc.lll.IInjector;
+import ftbsc.lll.exceptions.InjectionException;
+import org.objectweb.asm.tree.ClassNode;
+import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
+import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
+
+import java.util.*;
+
+public class LilleroMixin implements IMixinConfigPlugin {
+
+	private final Map<String, List<IInjector>> injectorMap = new HashMap<>();
+
+	/**
+	 * Called after the plugin is instantiated, do any setup here.
+	 * @param mixinPackage The mixin root package from the config
+	 */
+	@Override
+	public void onLoad(String mixinPackage) {
+		for (IInjector inj : ServiceLoader.load(IInjector.class, this.getClass().getClassLoader())) {
+			//LOGGER.info(RESOURCE, "Registering injector {}", inj.name());
+			List<IInjector> injectors = this.injectorMap.get(inj.targetClass());
+			if(injectors == null) {
+				injectors = new ArrayList<>();
+				injectorMap.put(inj.targetClass(), injectors);
+			}
+			injectors.add(inj);
+		}
+	}
+
+	/**
+	 * Called only if the "referenceMap" key in the config is <b>not</b> set.
+	 * This allows the refmap file name to be supplied by the plugin
+	 * programatically if desired. Returning <code>null</code> will revert to
+	 * the default behaviour of using the default refmap json file.
+	 *
+	 * @return Path to the refmap resource or null to revert to the default
+	 */
+	@Override //TODO ?
+	public String getRefMapperConfig() {
+		return null;
+	}
+
+	/**
+	 * Called during mixin intialisation, allows this plugin to control whether
+	 * a specific will be applied to the specified target. Returning false will
+	 * remove the target from the mixin's target set, and if all targets are
+	 * removed then the mixin will not be applied at all.
+	 *
+	 * @param targetClassName Fully qualified class name of the target class
+	 * @param mixinClassName  Fully qualified class name of the mixin
+	 * @return True to allow the mixin to be applied, or false to remove it from
+	 * target's mixin set
+	 */
+	@Override
+	public boolean shouldApplyMixin(String targetClassName, String mixinClassName) {
+		return true;
+	}
+
+	/**
+	 * Called after all configurations are initialised, this allows this plugin
+	 * to observe classes targetted by other mixin configs and optionally remove
+	 * targets from its own set. The set myTargets is a direct view of the
+	 * targets collection in this companion config and keys may be removed from
+	 * this set to suppress mixins in this config which target the specified
+	 * class. Adding keys to the set will have no effect.
+	 *
+	 * @param myTargets    Target class set from the companion config
+	 * @param otherTargets Target class set incorporating targets from all other
+	 *                     configs, read-only
+	 */
+	@Override
+	public void acceptTargets(Set<String> myTargets, Set<String> otherTargets) {
+
+	}
+
+	/**
+	 * After mixins specified in the configuration have been processed, this
+	 * method is called to allow the plugin to add any additional mixins to
+	 * load. It should return a list of mixin class names or return null if the
+	 * plugin does not wish to append any mixins of its own.
+	 *
+	 * @return additional mixins to apply
+	 */
+	@Override
+	public List<String> getMixins() {
+		return null;
+	}
+
+	/**
+	 * Called immediately <b>before</b> a mixin is applied to a target class,
+	 * allows any pre-application transformations to be applied.
+	 *
+	 * @param targetClassName Transformed name of the target class
+	 * @param targetClass     Target class tree
+	 * @param mixinClassName  Name of the mixin class
+	 * @param mixinInfo       Information about this mixin
+	 */
+	@Override
+	public void preApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
+		injectorMap.get(targetClassName).forEach((inj) -> targetClass.methods.stream()
+			.filter(m -> m.name.equals(inj.methodName()) && m.desc.equals(inj.methodDesc()))
+			.forEach(m -> {
+				try {
+					inj.inject(targetClass, m);
+				} catch (InjectionException ignored) {} //TODO log
+			}));
+	}
+
+	/**
+	 * Called immediately <b>after</b> a mixin is applied to a target class,
+	 * allows any post-application transformations to be applied.
+	 *
+	 * @param targetClassName Transformed name of the target class
+	 * @param targetClass     Target class tree
+	 * @param mixinClassName  Name of the mixin class
+	 * @param mixinInfo       Information about this mixin
+	 */
+	@Override
+	public void postApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
+
+	}
+}
-- 
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