classes with methods / fields that reference unfound classes can't be used in mirror

[TPGamesNL]

SkriptLang/Skript#3051

find out what Java standards are on this, because I probably won't support it if is deemed bad practice.

[13:55:42] [Server thread/WARN]: [Skript] Task #38 for Skript v2.5-alpha3 generated an exception
java.lang.NoClassDefFoundError: com/sucy/skill/SkillAPI
	at java.lang.Class.getDeclaredMethods0(Native Method) ~[?:?]
	at java.lang.Class.privateGetDeclaredMethods(Class.java:3166) ~[?:?]
	at java.lang.Class.privateGetPublicMethods(Class.java:3191) ~[?:?]
	at java.lang.Class.getMethods(Class.java:1904) ~[?:?]
	at com.btk5h.skriptmirror.util.JavaUtil.methods(JavaUtil.java:53) ~[?:?]
	at com.btk5h.skriptmirror.skript.reflect.ExprJavaCall.createCallSite(ExprJavaCall.java:386) ~[?:?]
	at java.util.HashMap.computeIfAbsent(HashMap.java:1133) ~[?:?]
	at com.btk5h.skriptmirror.skript.reflect.ExprJavaCall.getCallSite(ExprJavaCall.java:346) ~[?:?]
	at com.btk5h.skriptmirror.skript.reflect.ExprJavaCall.findCompatibleMethod(ExprJavaCall.java:524) ~[?:?]
	at com.btk5h.skriptmirror.skript.reflect.ExprJavaCall.invoke(ExprJavaCall.java:435) ~[?:?]
	at com.btk5h.skriptmirror.skript.reflect.ExprJavaCall.getSingle(ExprJavaCall.java:137) ~[?:?]
	at com.btk5h.skriptmirror.skript.reflect.ExprJavaCall.getArray(ExprJavaCall.java:143) ~[?:?]
	at ch.njol.skript.effects.EffChange.execute(EffChange.java:278) ~[?:?]
	at ch.njol.skript.lang.Effect.run(Effect.java:52) ~[?:?]
	at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:61) ~[?:?]
	at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:89) ~[?:?]
	at ch.njol.skript.lang.Trigger.execute(Trigger.java:57) ~[?:?]
	at ch.njol.skript.events.EvtScript.register(EvtScript.java:61) ~[?:?]
	at ch.njol.skript.ScriptLoader$3.call(ScriptLoader.java:753) ~[?:?]
	at ch.njol.skript.ScriptLoader$3.call(ScriptLoader.java:1) ~[?:?]
	at ch.njol.skript.ScriptLoader.loadScript(ScriptLoader.java:772) ~[?:?]
	at ch.njol.skript.ScriptLoader.lambda$1(ScriptLoader.java:410) ~[?:?]
	at ch.njol.skript.ScriptLoader.loadScripts(ScriptLoader.java:429) ~[?:?]
	at ch.njol.skript.ScriptLoader.lambda$0(ScriptLoader.java:348) ~[?:?]
	at ch.njol.skript.ScriptLoader.loadScripts(ScriptLoader.java:381) ~[?:?]
	at ch.njol.skript.Skript$2.run(Skript.java:592) ~[?:?]
	at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:64) ~[server.jar:git-Paper-33d42c8e]
	at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:423) ~[server.jar:git-Paper-33d42c8e]
	at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:852) ~[server.jar:git-Paper-33d42c8e]
	at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423) ~[server.jar:git-Paper-33d42c8e]
	at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:786) ~[server.jar:git-Paper-33d42c8e]
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:678) ~[server.jar:git-Paper-33d42c8e]
	at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.ClassNotFoundException: com.sucy.skill.SkillAPI
	at java.net.URLClassLoader.findClass(URLClassLoader.java:471) ~[?:?]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:156) ~[server.jar:git-Paper-33d42c8e]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:104) ~[server.jar:git-Paper-33d42c8e]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:588) ~[?:?]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[?:?]
	... 33 more

error is because mirror uses getMethods() instead of getMethod(String name)

[TPGamesNL]

Yea I think I'm gonna try to fix it, even though it's probably bad practice

[TPGamesNL]

Look at MethodHandle, it might be helpful.
https://docs.oracle.com/javase/8/docs/api/java/lang/invoke/MethodType.html#genericMethodType-int-

https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/lang/invoke/MethodHandles.Lookup.html#findVirtual(java.lang.Class,java.lang.String,java.lang.invoke.MethodType)

It might not be doable, only the name of the method is available at parse time, and methods can have the same names with different arguments.

[TPGamesNL]

Look at MethodHandle, it might be helpful.
https://docs.oracle.com/javase/8/docs/api/java/lang/invoke/MethodType.html#genericMethodType-int-

https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/lang/invoke/MethodHandles.Lookup.html#findVirtual(java.lang.Class,java.lang.String,java.lang.invoke.MethodType)

It might not be doable, only the name of the method is available at parse time, and methods can have the same names with different arguments.

well it doesn't give errors, but I don't think it's a great solution, as mirror will need the parameter amount and each type, but it could be done anyway (with seperate syntax) for btk5h/skript-mirror#99 which then can be used if you come across this error.
EDIT: see https://tpgamesnl.gitbook.io/skript-reflect/basics/running-java-code#calling-overloaded-methods

[TPGamesNL]

Reopening, not because I'm going to fix it, but because I gotta rethrow the exception to include more context (which class' members are being looked up, etc)

https://pastebin.com/B1HCs3kt