Performance improvement based on case study by @me4502

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitWorld.java

@@ -22,14 +22,8 @@ package com.sk89q.worldedit.bukkit;
 import static com.google.common.base.Preconditions.checkNotNull;
 
 import com.boydti.fawe.Fawe;
-import com.boydti.fawe.beta.IBlocks;
-import com.boydti.fawe.beta.IChunk;
 import com.boydti.fawe.beta.IChunkGet;
-import com.boydti.fawe.beta.IQueueExtent;
 import com.boydti.fawe.beta.implementation.packet.ChunkPacket;
-import com.boydti.fawe.bukkit.FaweBukkit;
-import com.boydti.fawe.bukkit.adapter.mc1_14.BukkitGetBlocks_1_14;
-import com.boydti.fawe.config.Settings;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.WorldEdit;
@@ -39,7 +33,6 @@ import com.sk89q.worldedit.blocks.BaseItemStack;
 import com.sk89q.worldedit.bukkit.adapter.BukkitImplAdapter;
 import com.sk89q.worldedit.entity.BaseEntity;
 import com.sk89q.worldedit.entity.Player;
-import com.sk89q.worldedit.history.change.BlockChange;
 import com.sk89q.worldedit.math.BlockVector2;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
@@ -52,6 +45,7 @@ import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.weather.WeatherType;
 import com.sk89q.worldedit.world.weather.WeatherTypes;
+import io.papermc.lib.PaperLib;
 import java.lang.ref.WeakReference;
 import java.nio.file.Path;
 import java.util.ArrayList;
@@ -60,10 +54,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
-import java.util.function.Supplier;
 import javax.annotation.Nullable;
-
-import io.papermc.lib.PaperLib;
 import org.bukkit.Effect;
 import org.bukkit.TreeType;
 import org.bukkit.World;
@@ -191,8 +182,14 @@ public class BukkitWorld extends AbstractWorld {
     @Override
     public boolean regenerate(Region region, EditSession editSession) {
         BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
+        try {
             if (adapter != null) {
                 return adapter.regenerate(getWorld(), region, null, null, editSession);
+            } else {
+                throw new UnsupportedOperationException("Missing BukkitImplAdapater for this version.");
+            }
+        } catch (Exception e) {
+            logger.warn("Regeneration via adapter failed.", e);
         }
         /*
         BaseBlock[] history = new BaseBlock[16 * 16 * (getMaxY() + 1)];
@@ -336,16 +333,14 @@ public class BukkitWorld extends AbstractWorld {
     @Override
     public void checkLoadedChunk(BlockVector3 pt) {
         World world = getWorld();
-        if (!world.isChunkLoaded(pt.getBlockX() >> 4, pt.getBlockZ() >> 4)) {
         int X = pt.getBlockX() >> 4;
         int Z = pt.getBlockZ() >> 4;
         if (Fawe.isMainThread()) {
             world.getChunkAt(X, Z);
-	        } else if (!world.isChunkLoaded(X, Z)) {
+        } else {
             PaperLib.getChunkAtAsync(world, X, Z, true);
         }
     }
-    }
 
     @Override
     public boolean equals(Object other) {

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/WorldEditPlugin.java

@@ -658,10 +658,10 @@ public class WorldEditPlugin extends JavaPlugin { //implements TabCompleter
                     = WorldEdit.getInstance().getPlatformManager().getPlatformCommandManager().getCommandManager().getCommand(label);
             if (!command.isPresent()) return;
 
-            CommandSuggestionEvent suggestEvent = new CommandSuggestionEvent(wrapCommandSender(event.getSender()), event.getBuffer());
+            CommandSuggestionEvent suggestEvent = new CommandSuggestionEvent(wrapCommandSender(event.getSender()), buffer);
             getWorldEdit().getEventBus().post(suggestEvent);
 
-            event.setCompletions(CommandUtil.fixSuggestions(event.getBuffer(), suggestEvent.getSuggestions()));
+            event.setCompletions(CommandUtil.fixSuggestions(buffer, suggestEvent.getSuggestions()));
             event.setHandled(true);
         }
     }

worldedit-core/src/main/java/com/boydti/fawe/object/progress/DefaultProgressTracker.java

@@ -108,12 +108,13 @@ public class DefaultProgressTracker implements BiConsumer<DefaultProgressTracker
     }
 
     public void sendTask() {
-        String queue = StringMan.padRight("" + totalQueue, 3);
+        String queue = StringMan.padRight(String.valueOf(totalQueue), 3);
-        String dispatch = StringMan.padLeft("" + amountDispatch, 3);
+        String dispatch = StringMan.padLeft(String.valueOf(amountDispatch), 3);
         int total = amountDispatch != 0 ? amountDispatch : amountQueue;
         int speed = total != 0 ? (int) (total / Math.max((System.currentTimeMillis() - start) / 1000d, 1)) : 0;
-        String speedStr = StringMan.padRight("" + speed, 3);
+        String speedStr = StringMan.padRight(String.valueOf(speed), 3);
-        String percent = StringMan.padRight("" + (amountDispatch != 0 ? (amountDispatch * 100) / totalQueue : 0), 3);
+        String percent = StringMan.padRight(
+            String.valueOf(amountDispatch != 0 ? (amountDispatch * 100) / totalQueue : 0), 3);
         int remaining = speed != 0 ? amountQueue / speed : -1;
         sendTile(TextComponent.empty(), Caption.of("fawe.progress.progress.message", queue, dispatch, percent, StringMan.padLeft("" + speed, 3), StringMan.padLeft("" + remaining, 3)));
     }

worldedit-core/src/main/java/com/boydti/fawe/object/regions/FuzzyRegion.java

@@ -15,6 +15,7 @@ import com.sk89q.worldedit.regions.AbstractRegion;
 import com.sk89q.worldedit.regions.RegionOperationException;
 import com.sk89q.worldedit.world.World;
 import java.util.Iterator;
+import org.jetbrains.annotations.NotNull;
 
 public class FuzzyRegion extends AbstractRegion {
 
@@ -56,6 +57,7 @@ public class FuzzyRegion extends AbstractRegion {
         Operations.completeBlindly(search);
     }
 
+    @NotNull
     @Override
     public Iterator<BlockVector3> iterator() {
         return set.iterator();

worldedit-core/src/main/java/com/boydti/fawe/object/regions/PolyhedralRegion.java

@@ -249,9 +249,9 @@ public class PolyhedralRegion extends AbstractRegion {
         for (int i = 0; i < triangles.size(); ++i) {
             final Triangle triangle = triangles.get(i);
 
-            final BlockVector3 v0 = change.add(triangle.getVertex(0).toBlockPoint());
+            final BlockVector3 v0 = change.add(triangle.getVertex(0));
-            final BlockVector3 v1 = change.add(triangle.getVertex(1).toBlockPoint());
+            final BlockVector3 v1 = change.add(triangle.getVertex(1));
-            final BlockVector3 v2 = change.add(triangle.getVertex(2).toBlockPoint());
+            final BlockVector3 v2 = change.add(triangle.getVertex(2));
 
             triangles.set(i, new Triangle(v0, v1, v2));
         }

worldedit-core/src/main/java/com/boydti/fawe/object/regions/Triangle.java

@@ -62,8 +62,8 @@ public class Triangle {
         return StringMan.getString(verts);
     }
 
-    public Vector3 getVertex(int index) {
+    public BlockVector3 getVertex(int index) {
-        return Vector3.at(verts[index][0], verts[index][1], verts[index][2]);
+        return BlockVector3.at(verts[index][0], verts[index][1], verts[index][2]);
     }
 
     public boolean contains(BlockVector3 pos) {

worldedit-core/src/main/java/com/boydti/fawe/util/EditSessionBuilder.java

@@ -40,7 +40,6 @@ import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.eventbus.EventBus;
 import com.sk89q.worldedit.world.World;
 import java.util.UUID;
-import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import org.jetbrains.annotations.NotNull;
 
@@ -76,7 +75,7 @@ public class EditSessionBuilder {
      *
      * @param world A world must be provided for all EditSession(s)
      */
-    public EditSessionBuilder(@Nonnull World world) {
+    public EditSessionBuilder(@NotNull World world) {
         checkNotNull(world);
         this.world = world;
         this.worldName = world.getName();
@@ -88,7 +87,7 @@ public class EditSessionBuilder {
         this.worldName = worldName;
     }
 
-    public EditSessionBuilder(@Nonnull String worldName) {
+    public EditSessionBuilder(@NotNull String worldName) {
         checkNotNull(worldName);
         this.worldName = worldName;
         this.world = FaweAPI.getWorld(worldName);
@@ -108,7 +107,7 @@ public class EditSessionBuilder {
         return limit(FaweLimit.MAX.copy());
     }
 
-    public EditSessionBuilder limitUnprocessed(@Nonnull Player player) {
+    public EditSessionBuilder limitUnprocessed(@NotNull Player player) {
         checkNotNull(player);
         limitUnlimited();
         FaweLimit tmp = player.getLimit();

worldedit-core/src/main/java/com/sk89q/worldedit/extent/AbstractBufferingExtent.java

@@ -26,6 +26,7 @@ import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
 import java.util.Optional;
+import javax.annotation.Nullable;
 
 /**
  * Base extent class for buffering changes between {@link #setBlock(BlockVector3, BlockStateHolder)}
@@ -51,17 +52,38 @@ public abstract class AbstractBufferingExtent extends AbstractDelegateExtent {
 
     @Override
     public BlockState getBlock(BlockVector3 position) {
-        return getBufferedBlock(position)
+        BaseBlock block = getBufferedFullBlock(position);
-            .map(BaseBlock::toImmutableState)
+        if (block == null) {
-            .orElseGet(() -> super.getBlock(position));
+            return super.getBlock(position);
+        }
+        return block.toImmutableState();
     }
 
     @Override
     public BaseBlock getFullBlock(BlockVector3 position) {
-        return getBufferedBlock(position)
+        BaseBlock block = getBufferedFullBlock(position);
-            .orElseGet(() -> super.getFullBlock(position));
+        if (block == null) {
+            return super.getFullBlock(position);
+        }
+        return block;
     }
 
-    protected abstract Optional<BaseBlock> getBufferedBlock(BlockVector3 position);
+    @Deprecated
-
+    protected Optional<BaseBlock> getBufferedBlock(BlockVector3 position) {
+        throw new IllegalStateException("Invalid BufferingExtent provided. Must override `getBufferedFullBlock(BlockVector3)`.");
+    }
+
+    //TODO make below abstract
+    /**
+     * Gets a block from the buffer, or null if not buffered.
+     *
+     * This **must** be overridden, and will be abstract in WorldEdit 8.
+     *
+     * @param position The position
+     * @return The buffered block, or null
+     */
+    @Nullable
+    protected BaseBlock getBufferedFullBlock(BlockVector3 position) {
+        return getBufferedBlock(position).orElse(null);
+    }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/buffer/ExtentBuffer.java

@@ -66,11 +66,11 @@ public class ExtentBuffer extends AbstractBufferingExtent {
     }
 
     @Override
-    protected Optional<BaseBlock> getBufferedBlock(BlockVector3 position) {
+    protected BaseBlock getBufferedFullBlock(BlockVector3 position) {
-        if (mask.test(getExtent(), position)) {
+        if (mask.test(position)) {
-            return Optional.of(buffer.computeIfAbsent(position, (pos -> getExtent().getFullBlock(pos))));
+            return buffer.computeIfAbsent(position, (pos -> getExtent().getFullBlock(pos)));
         }
-        return Optional.empty();
+        return null;
     }
 
     @Override

worldedit-core/src/main/java/com/sk89q/worldedit/extent/reorder/ChunkBatchingExtent.java

@@ -77,8 +77,8 @@ public class ChunkBatchingExtent extends AbstractBufferingExtent {
     }
 
     @Override
-    protected Optional<BaseBlock> getBufferedBlock(BlockVector3 position) {
+    protected BaseBlock getBufferedFullBlock(BlockVector3 position) {
-        return Optional.ofNullable(blockMap.get(position));
+        return blockMap.get(position);
     }
 
     @Override
@@ -94,8 +94,7 @@ public class ChunkBatchingExtent extends AbstractBufferingExtent {
             @Override
             public Operation resume(RunContext run) throws WorldEditException {
                 if (iterator == null) {
-                    iterator = ImmutableSortedSet.copyOf(RegionOptimizedComparator.INSTANCE,
+                    iterator = blockMap.keySet().parallelStream().sorted(RegionOptimizedComparator.INSTANCE).iterator();
-                        blockMap.keySet()).iterator();
                 }
                 while (iterator.hasNext()) {
                     BlockVector3 position = iterator.next();

worldedit-core/src/main/java/com/sk89q/worldedit/extent/reorder/MultiStageReorder.java

@@ -247,11 +247,14 @@ public class MultiStageReorder extends AbstractBufferingExtent implements Reorde
     }
 
     @Override
-    protected Optional<BaseBlock> getBufferedBlock(BlockVector3 position) {
+    protected BaseBlock getBufferedFullBlock(BlockVector3 position) {
-        return stages.values().stream()
+        for (BlockMap<BaseBlock> blocks : stages.values()) {
-            .map(blocks -> blocks.get(position))
+            BaseBlock baseBlock = blocks.get(position);
-            .filter(Objects::nonNull)
+            if (baseBlock != null) {
-            .findAny();
+                return baseBlock;
+            }
+        }
+        return null;
     }
 
     @Override

worldedit-core/src/main/java/com/sk89q/worldedit/internal/block/BlockStateIdAccess.java

@@ -99,6 +99,9 @@ public final class BlockStateIdAccess {
 
     */
     
+    private BlockStateIdAccess() {
+    }
+    
     public static @Nullable BlockState getBlockStateById(int id) {
         return BlockState.getFromOrdinal(id);
     }

worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockType.java

@@ -32,11 +32,13 @@ import com.sk89q.worldedit.registry.NamespacedRegistry;
 import com.sk89q.worldedit.registry.state.AbstractProperty;
 import com.sk89q.worldedit.registry.state.Property;
 import com.sk89q.worldedit.registry.state.PropertyKey;
+import com.sk89q.worldedit.util.concurrency.LazyReference;
 import com.sk89q.worldedit.world.item.ItemType;
 import com.sk89q.worldedit.world.item.ItemTypes;
 import com.sk89q.worldedit.world.registry.BlockMaterial;
 import com.sk89q.worldedit.world.registry.LegacyMapper;
 
+import java.util.function.Function;
 import javax.annotation.Nullable;
 import java.util.Collections;
 import java.util.List;
@@ -53,10 +55,12 @@ public class BlockType implements Keyed, Pattern {
 
     private final String id;
     private final BlockTypesCache.Settings settings;
-    /*
+    private final LazyReference<FuzzyBlockState> emptyFuzzy
-    private final LazyReference<Integer> legacyId = LazyReference.from(() -> computeLgacy(0));
+        = LazyReference.from(() -> new FuzzyBlockState(this));
+    
+    private final LazyReference<Integer> legacyId = LazyReference.from(() -> computeLegacy(0));
     private final LazyReference<Integer> legacyData = LazyReference.from(() -> computeLegacy(1));
-    */
+    
     private Integer legacyCombinedId;
     private boolean initItemType;
     private ItemType itemType;
@@ -67,6 +71,16 @@ public class BlockType implements Keyed, Pattern {
         this.settings = new BlockTypesCache.Settings(this, id, internalId, states);
     }
 
+    public BlockType(String id, Function<BlockState, BlockState> values) {
+        // If it has no namespace, assume minecraft.
+        if (!id.contains(":")) {
+            id = "minecraft:" + id;
+        }
+        this.id = id;
+        //TODO fix the line below
+        this.settings = new BlockTypesCache.Settings(this, id, 0, null);
+    }
+    
     @Deprecated
     public int getMaxStateId() {
         return settings.permutations;
@@ -179,13 +193,12 @@ public class BlockType implements Keyed, Pattern {
      *
      * @return The default state
      */
-    public final BlockState getDefaultState() {
+    public BlockState getDefaultState() {
         return this.settings.defaultState;
     }
 
-    @Deprecated
     public FuzzyBlockState getFuzzyMatcher() {
-        return new FuzzyBlockState(this);
+        return emptyFuzzy.getValue();
     }
 
     /**

worldedit-sponge/src/main/java/com/sk89q/worldedit/sponge/SpongeWorldEdit.java

@@ -74,16 +74,16 @@ import java.util.concurrent.TimeUnit;
  */
 @Plugin(id = SpongeWorldEdit.MOD_ID, name = "WorldEdit",
         description = "WorldEdit is an easy-to-use in-game world editor for Minecraft",
-        url = "http://www.enginehub.org/worldedit")
+        url = "https://enginehub.org/worldedit/")
 public class SpongeWorldEdit {
 
     @Inject
     private Logger logger;
 
-    @Inject
     private Metrics2 metrics;
 
     public static final String MOD_ID = "worldedit";
+    private static final int BSTATS_PLUGIN_ID = 3329;
 
     private SpongePermissionsProvider provider;
 
@@ -109,8 +109,10 @@ public class SpongeWorldEdit {
     @Inject @ConfigDir(sharedRoot = false)
     private File workingDir;
 
-    public SpongeWorldEdit() {
+    @Inject
+    public SpongeWorldEdit(Metrics2.Factory metricsFactory) {
         inst = this;
+        metrics = metricsFactory.make(BSTATS_PLUGIN_ID);
     }
 
     @Listener
@@ -166,7 +168,9 @@ public class SpongeWorldEdit {
 
     @Listener
     public void serverStopping(GameStoppingServerEvent event) {
-        WorldEdit.getInstance().getPlatformManager().unregister(platform);
+        WorldEdit worldEdit = WorldEdit.getInstance();
+        worldEdit.getSessionManager().unload();
+        worldEdit.getPlatformManager().unregister(platform);
     }
 
     @Listener