Paper/patches/server/0089-remove-null-possibility-for-getServer-singleton.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 28 Apr 2016 00:57:27 -0400
Subject: [PATCH] remove null possibility for getServer singleton

to stop IDE complaining about potential NPE

diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index f1868ef9111f25a1d4232587c0c5145c7cd50ef4..ef231e11b90b24418a77b62f5fe766c9ac10c09b 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -189,6 +189,7 @@ import org.spigotmc.SlackActivityAccountant; // Spigot
 
 public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTask> implements SnooperPopulator, CommandSource, AutoCloseable {
 
+    private static MinecraftServer SERVER; // Paper
     public static final Logger LOGGER = LogManager.getLogger();
     private static final float AVERAGE_TICK_TIME_SMOOTHING = 0.8F;
     private static final int TICK_STATS_SPAN = 100;
@@ -318,6 +319,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
 
     public MinecraftServer(OptionSet options, DataPackConfig datapackconfiguration, Thread thread, RegistryAccess.RegistryHolder iregistrycustom_dimension, LevelStorageSource.LevelStorageAccess convertable_conversionsession, WorldData savedata, PackRepository resourcepackrepository, Proxy proxy, DataFixer datafixer, ServerResources datapackresources, @Nullable MinecraftSessionService minecraftsessionservice, @Nullable GameProfileRepository gameprofilerepository, @Nullable GameProfileCache usercache, ChunkProgressListenerFactory worldloadlistenerfactory) {
         super("Server");
+        SERVER = this; // Paper - better singleton
         this.metricsRecorder = InactiveMetricsRecorder.INSTANCE;
         this.profiler = this.metricsRecorder.getProfiler();
         this.onMetricsRecordingStopped = (methodprofilerresults) -> {
@@ -2232,7 +2234,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
 
     @Deprecated
     public static MinecraftServer getServer() {
-        return (Bukkit.getServer() instanceof CraftServer) ? ((CraftServer) Bukkit.getServer()).getServer() : null;
+        return SERVER; // Paper
     }
     // CraftBukkit end