Apply a few micro-optimisations

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

@@ -458,9 +458,9 @@ public <B extends BlockStateHolder<B>> boolean setBlock(BlockVector3 position, B
             try {
                 return worldNativeAccess.setBlock(position, block, sideEffects);
             } catch (Exception e) {
-                if (block instanceof BaseBlock && ((BaseBlock) block).getNbt() != null) {
+                if (block instanceof BaseBlock baseBlock && baseBlock.getNbt() != null) {
                     LOGGER.warn("Tried to set a corrupt tile entity at " + position.toString()
-                        + ": " + ((BaseBlock) block).getNbt(), e);
+                        + ": " + baseBlock.getNbt(), e);
                 } else {
                     LOGGER.warn("Failed to set block via adapter, falling back to generic", e);
                 }

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/brush/GravityBrush.java

@@ -89,7 +89,7 @@ public void build(EditSession editSession, BlockVector3 position, Pattern patter
                 }
 
                 for (LocatedBlock block : column) {
-                    editSession.setBlock(block.getLocation(), block.getBlock());
+                    editSession.setBlock(block.location(), block.block());
                 }
 
                 for (BlockVector3 removedBlock : removedBlocks) {

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

@@ -88,6 +88,7 @@ public boolean isEnabled() {
      */
     public void setEnabled(boolean enabled) {
         this.enabled = enabled;
+        this.changeSet.setRecordChanges(enabled);
     }
 
     @Override

worldedit-core/src/main/java/com/sk89q/worldedit/extent/cache/LastAccessExtentCache.java

@@ -50,6 +50,8 @@ public BlockState getBlock(BlockVector3 position) {
         CachedBlock<BlockState> lastBlock = this.lastBlock;
         if (lastBlock != null && lastBlock.position.equals(position)) {
             return lastBlock.block;
+        } else if (lastFullBlock != null && lastFullBlock.position.equals(position)) {
+            return lastFullBlock.block().toImmutableState();
         } else {
             BlockState block = super.getBlock(position);
             this.lastBlock = new CachedBlock<>(position, block);
@@ -84,14 +86,7 @@ public <T extends BlockStateHolder<T>> boolean setBlock(BlockVector3 location, T
         return false;
     }
 
-    private static class CachedBlock<B extends BlockStateHolder<B>> {
-        private final BlockVector3 position;
-        private final B block;
-
-        private CachedBlock(BlockVector3 position, B block) {
-            this.position = position;
-            this.block = block;
-        }
+    private record CachedBlock<B extends BlockStateHolder<B>>(BlockVector3 position, B block) {
     }
 
 }

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

@@ -77,6 +77,10 @@ public <B extends BlockStateHolder<B>> boolean setBlock(BlockVector3 location, B
 
     @Override
     protected BaseBlock getBufferedFullBlock(BlockVector3 position) {
+        if (!enabled) {
+            // Early exit if we're not enabled.
+            return null;
+        }
         return blockMap.get(position);
     }
 

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

@@ -259,6 +259,10 @@ public <B extends BlockStateHolder<B>> boolean setBlock(BlockVector3 location, B
 
     @Override
     protected BaseBlock getBufferedFullBlock(BlockVector3 position) {
+        if (!enabled) {
+            // Early-exit if we know we're not enabled.
+            return null;
+        }
         for (BlockMap<BaseBlock> blocks : stages.values()) {
             BaseBlock baseBlock = blocks.get(position);
             if (baseBlock != null) {

worldedit-core/src/main/java/com/sk89q/worldedit/extent/transform/BlockTransformExtent.java

@@ -117,36 +117,32 @@ public static <B extends BlockStateHolder<B>> B transform(B block, Transform tra
         checkNotNull(block);
         checkNotNull(transform);
 
+        if (transform.isIdentity()) {
+            return block;
+        }
+
         B result = block;
         List<? extends Property<?>> properties = block.getBlockType().getProperties();
 
         for (Property<?> property : properties) {
-            if (property instanceof DirectionalProperty) {
-                DirectionalProperty dirProp = (DirectionalProperty) property;
+            if (property instanceof DirectionalProperty dirProp) {
                 Direction value = (Direction) block.getState(property);
                 if (value != null) {
                     Vector3 newValue = getNewStateValue(dirProp.getValues(), transform, value.toVector());
                     if (newValue != null) {
                         result = result.with(dirProp, Direction.findClosest(newValue, Direction.Flag.ALL));
                     }
                 }
-            } else if (property instanceof EnumProperty) {
-                EnumProperty enumProp = (EnumProperty) property;
+            } else if (property instanceof EnumProperty enumProp) {
                 if (property.getName().equals("axis")) {
                     // We have an axis - this is something we can do the rotations to :sunglasses:
                     Direction value = null;
                     switch ((String) block.getState(property)) {
-                        case "x":
-                            value = Direction.EAST;
-                            break;
-                        case "y":
-                            value = Direction.UP;
-                            break;
-                        case "z":
-                            value = Direction.NORTH;
-                            break;
-                        default:
-                            break;
+                        case "x" -> value = Direction.EAST;
+                        case "y" -> value = Direction.UP;
+                        case "z" -> value = Direction.NORTH;
+                        default -> {
+                        }
                     }
                     if (value != null) {
                         Vector3 newValue = getNewStateValue(Direction.valuesOf(Direction.Flag.UPRIGHT | Direction.Flag.CARDINAL), transform, value.toVector());
@@ -225,8 +221,7 @@ public static <B extends BlockStateHolder<B>> B transform(B block, Transform tra
                         }
                     }
                 }
-            } else if (property instanceof IntegerProperty) {
-                IntegerProperty intProp = (IntegerProperty) property;
+            } else if (property instanceof IntegerProperty intProp) {
                 if (property.getName().equals("rotation")) {
                     if (intProp.getValues().size() == 16) {
                         Optional<Direction> direction = Direction.fromRotationIndex(block.getState(intProp));

worldedit-core/src/main/java/com/sk89q/worldedit/function/operation/SetLocatedBlocks.java

@@ -38,7 +38,7 @@ public SetLocatedBlocks(Extent extent, Iterable<LocatedBlock> blocks) {
     @Override
     public Operation resume(RunContext run) throws WorldEditException {
         for (LocatedBlock block : blocks) {
-            extent.setBlock(block.getLocation(), block.getBlock());
+            extent.setBlock(block.location(), block.block());
         }
         return null;
     }

worldedit-core/src/main/java/com/sk89q/worldedit/history/changeset/BlockOptimizedHistory.java

@@ -42,7 +42,7 @@
 public class BlockOptimizedHistory extends ArrayListHistory {
 
     private static Change createChange(LocatedBlock block) {
-        return new BlockChange(block.getLocation(), block.getBlock(), block.getBlock());
+        return new BlockChange(block.location(), block.block(), block.block());
     }
 
     private final LocatedBlockList previous = new LocatedBlockList();
@@ -52,14 +52,16 @@ private static Change createChange(LocatedBlock block) {
     public void add(Change change) {
         checkNotNull(change);
 
-        if (change instanceof BlockChange blockChange) {
-            BlockVector3 position = blockChange.getPosition();
-            if (!previous.containsLocation(position)) {
-                previous.add(position, blockChange.getPrevious());
+        if (isRecordingChanges()) {
+            if (change instanceof BlockChange blockChange) {
+                BlockVector3 position = blockChange.getPosition();
+                if (!previous.containsLocation(position)) {
+                    previous.add(position, blockChange.getPrevious());
+                }
+                current.add(position, blockChange.getCurrent());
+            } else {
+                super.add(change);
             }
-            current.add(position, blockChange.getCurrent());
-        } else {
-            super.add(change);
         }
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/util/LocatedBlock.java

@@ -22,46 +22,37 @@
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.world.block.BaseBlock;
 
-import java.util.Objects;
-
 import static com.google.common.base.Preconditions.checkNotNull;
 
 /**
  * Represents a block located at some position.
  */
-public final class LocatedBlock {
-
-    private final BlockVector3 location;
-    private final BaseBlock block;
+public record LocatedBlock(BlockVector3 location, BaseBlock block) {
 
     public LocatedBlock(BlockVector3 location, BaseBlock block) {
         this.location = checkNotNull(location);
         this.block = checkNotNull(block);
     }
 
+    /**
+     * Gets the location.
+     *
+     * @return The location
+     * @deprecated This class is now a record. Use {@link #location()} instead.
+     */
+    @Deprecated
     public BlockVector3 getLocation() {
-        return location;
+        return this.location;
     }
 
+    /**
+     * Gets the block.
+     *
+     * @return The block
+     * @deprecated This class is now a record. Use {@link #block()} instead.
+     */
     public BaseBlock getBlock() {
-        return block;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(location, block);
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (this.getClass() != obj.getClass()) {
-            return false;
-        }
-        LocatedBlock lb = (LocatedBlock) obj;
-        return Objects.equals(location, lb.location) && Objects.equals(block, lb.block);
+        return this.block;
     }
 
 }

worldedit-core/src/main/java/com/sk89q/worldedit/util/collection/LocatedBlockList.java

@@ -47,13 +47,13 @@ public LocatedBlockList() {
 
     public LocatedBlockList(Collection<? extends LocatedBlock> collection) {
         for (LocatedBlock locatedBlock : collection) {
-            add(locatedBlock.getLocation(), locatedBlock.getBlock());
+            add(locatedBlock.location(), locatedBlock.block());
         }
     }
 
     public void add(LocatedBlock setBlockCall) {
         checkNotNull(setBlockCall);
-        add(setBlockCall.getLocation(), setBlockCall.getBlock());
+        add(setBlockCall.location(), setBlockCall.block());
     }
 
     public <B extends BlockStateHolder<B>> void add(BlockVector3 location, B block) {