Remove Kotlin (#625)

Shrinks the jar size since we no longer must bundle the Kotlin library. The downside is that some classes grew in size compared to their Kotlin versions.
Many contributors didn't care for Kotlin either.

buildSrc/src/main/kotlin/PlatformConfig.kt

@@ -2,12 +2,10 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import org.gradle.api.JavaVersion
 import org.gradle.api.Project
 import org.gradle.api.plugins.JavaPluginConvention
-import org.gradle.api.plugins.quality.CheckstyleExtension
 import org.gradle.api.tasks.bundling.Jar
 import org.gradle.api.tasks.compile.JavaCompile
 import org.gradle.api.tasks.javadoc.Javadoc
 import org.gradle.api.tasks.testing.Test
-import org.gradle.external.javadoc.CoreJavadocOptions
 import org.gradle.external.javadoc.StandardJavadocDocletOptions
 import org.gradle.kotlin.dsl.apply
 import org.gradle.kotlin.dsl.configure
@@ -55,7 +53,7 @@ fun Project.applyPlatformAndCoreConfiguration() {
     }
 
     dependencies {
-        "compileOnly"("org.jetbrains:annotations:19.0.0")
+        "compileOnly"("org.jetbrains:annotations:20.1.0")
         "testImplementation"("org.junit.jupiter:junit-jupiter-api:${Versions.JUNIT}")
         "testImplementation"("org.junit.jupiter:junit-jupiter-params:${Versions.JUNIT}")
         "testImplementation"("org.mockito:mockito-core:${Versions.MOCKITO}")

worldedit-bukkit/build.gradle.kts

@@ -46,7 +46,8 @@ dependencies {
         exclude("junit", "junit")
         isTransitive = false
     }
-    "compileOnly"("org.jetbrains:annotations:20.0.0")
+    "compileOnly"("org.jetbrains:annotations:20.1.0")
+    "testCompileOnly"("org.jetbrains:annotations:20.1.0")
     "compileOnly"("org.spigotmc:spigot:1.16.2-R0.1-SNAPSHOT")
     "implementation"("io.papermc:paperlib:1.0.4")
     "compileOnly"("com.sk89q:dummypermscompat:1.10") {

worldedit-core/build.gradle.kts

@@ -2,7 +2,6 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import com.mendhak.gradlecrowdin.DownloadTranslationsTask
 import com.mendhak.gradlecrowdin.UploadSourceFileTask
 import org.gradle.plugins.ide.idea.model.IdeaModel
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
     id("java-library")
@@ -10,7 +9,6 @@ plugins {
     id("net.ltgt.apt-idea")
     id("antlr")
     id("com.mendhak.gradlecrowdin")
-    kotlin("jvm") version "1.4.0"
 }
 
 repositories {
@@ -61,7 +59,6 @@ dependencies {
     "compile"("com.plotsquared:PlotSquared-Core:5.12.2") {
         isTransitive = false
     }
-    implementation(kotlin("stdlib-jdk8", "1.4.0"))
 }
 
 tasks.named<Test>("test") {
@@ -148,11 +145,3 @@ if (project.hasProperty(crowdinApiKey) && !gradle.startParameter.isOffline) {
         dependsOn("crowdinDownload")
     }
 }
-val compileKotlin: KotlinCompile by tasks
-compileKotlin.kotlinOptions {
-    jvmTarget = "1.8"
-}
-val compileTestKotlin: KotlinCompile by tasks
-compileTestKotlin.kotlinOptions {
-    jvmTarget = "1.8"
-}

worldedit-core/src/main/java/com/boydti/fawe/beta/IBatchProcessor.java

@@ -125,7 +125,7 @@ public interface IBatchProcessor {
      */
     default <T extends IBatchProcessor> IBatchProcessor remove(Class<T> clazz) {
         if (clazz.isInstance(this)) {
-            return EmptyBatchProcessor.INSTANCE;
+            return EmptyBatchProcessor.getInstance();
         }
         return this;
     }

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/NullChunkGet.java

@@ -0,0 +1,109 @@
+package com.boydti.fawe.beta.implementation.blocks;
+
+import com.boydti.fawe.FaweCache;
+import com.boydti.fawe.beta.IBlocks;
+import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
+import com.boydti.fawe.beta.implementation.lighting.HeightMapType;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.biome.BiomeTypes;
+import com.sk89q.worldedit.world.block.BaseBlock;
+import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BlockTypes;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.Future;
+
+public final class NullChunkGet implements IChunkGet {
+    private static final NullChunkGet instance = new NullChunkGet();
+
+    public static NullChunkGet getInstance() {
+        return instance;
+    }
+
+    @NotNull
+    public BaseBlock getFullBlock(int x, int y, int z) {
+        return BlockTypes.AIR.getDefaultState().toBaseBlock();
+    }
+
+    @Nullable
+    public BiomeType getBiomeType(int x, int y, int z) {
+        return BiomeTypes.FOREST;
+    }
+
+    @NotNull
+    public BlockState getBlock(int x, int y, int z) {
+        return BlockTypes.AIR.getDefaultState();
+    }
+
+    @NotNull
+    public Map<BlockVector3, CompoundTag> getTiles() {
+        return Collections.emptyMap();
+    }
+
+    @Nullable
+    public CompoundTag getTile(int x, int y, int z) {
+        return null;
+    }
+
+    @Nullable
+    public Set<CompoundTag> getEntities() {
+        return null;
+    }
+
+    @Nullable
+    public CompoundTag getEntity(@NotNull UUID uuid) {
+        return null;
+    }
+
+    public boolean trim(boolean aggressive) {
+        return true;
+    }
+
+    public boolean trim(boolean aggressive, int layer) {
+        return true;
+    }
+
+    @Nullable
+    public <T extends Future<T>> T call(@NotNull IChunkSet set, @NotNull Runnable finalize) {
+        return null;
+    }
+
+    @NotNull
+    public char[] load(int layer) {
+        return FaweCache.IMP.EMPTY_CHAR_4096;
+    }
+
+    public boolean hasSection(int layer) {
+        return false;
+    }
+
+    public int getEmmittedLight(int x, int y, int z) {
+        return 15;
+    }
+
+    public int getSkyLight(int x, int y, int z) {
+        return 15;
+    }
+
+    @NotNull
+    public int[] getHeightMap(@Nullable HeightMapType type) {
+        return new int[256];
+    }
+
+    @Nullable
+    public IBlocks reset() {
+        return null;
+    }
+
+    private NullChunkGet() {
+    }
+
+}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/blocks/NullChunkGet.kt

@@ -1,83 +0,0 @@
-package com.boydti.fawe.beta.implementation.blocks
-
-import com.boydti.fawe.FaweCache
-import com.boydti.fawe.beta.IBlocks
-import com.boydti.fawe.beta.IChunkGet
-import com.boydti.fawe.beta.IChunkSet
-import com.boydti.fawe.beta.implementation.lighting.HeightMapType
-import com.sk89q.jnbt.CompoundTag
-import com.sk89q.worldedit.math.BlockVector3
-import com.sk89q.worldedit.world.biome.BiomeType
-import com.sk89q.worldedit.world.biome.BiomeTypes
-import com.sk89q.worldedit.world.block.BaseBlock
-import com.sk89q.worldedit.world.block.BlockState
-import com.sk89q.worldedit.world.block.BlockTypes
-import java.util.*
-import java.util.concurrent.Future
-
-object NullChunkGet : IChunkGet {
-
-    override fun getFullBlock(x: Int, y: Int, z: Int): BaseBlock {
-        return BlockTypes.AIR!!.defaultState.toBaseBlock()
-    }
-
-    override fun getBiomeType(x: Int, y: Int, z: Int): BiomeType? {
-        return BiomeTypes.FOREST
-    }
-
-    override fun getBlock(x: Int, y: Int, z: Int): BlockState {
-        return BlockTypes.AIR!!.defaultState
-    }
-
-    override fun getTiles(): Map<BlockVector3, CompoundTag> {
-        return emptyMap()
-    }
-
-    override fun getTile(x: Int, y: Int, z: Int): CompoundTag? {
-        return null
-    }
-
-    override fun getEntities(): Set<CompoundTag>? {
-        return null
-    }
-
-    override fun getEntity(uuid: UUID): CompoundTag? {
-        return null
-    }
-
-    override fun trim(aggressive: Boolean): Boolean {
-        return true
-    }
-
-    override fun trim(aggressive: Boolean, layer: Int): Boolean {
-        return true
-    }
-
-    override fun <T : Future<T>> call(set: IChunkSet, finalize: Runnable): T? {
-        return null
-    }
-
-    override fun load(layer: Int): CharArray {
-        return FaweCache.IMP.EMPTY_CHAR_4096
-    }
-
-    override fun hasSection(layer: Int): Boolean {
-        return false
-    }
-
-    override fun getEmmittedLight(x: Int, y: Int, z: Int): Int {
-        return 15
-    }
-
-    override fun getSkyLight(x: Int, y: Int, z: Int): Int {
-        return 15
-    }
-
-    override fun getHeightMap(type: HeightMapType?): IntArray {
-        return IntArray(256)
-    }
-
-    override fun reset(): IBlocks? {
-        return null
-    }
-}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/chunk/NullChunk.java

@@ -0,0 +1,189 @@
+package com.boydti.fawe.beta.implementation.chunk;
+
+import com.boydti.fawe.beta.Filter;
+import com.boydti.fawe.beta.IChunkSet;
+import com.boydti.fawe.beta.IQueueChunk;
+import com.boydti.fawe.beta.implementation.filter.block.ChunkFilterBlock;
+import com.boydti.fawe.beta.implementation.lighting.HeightMapType;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.block.BaseBlock;
+import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BlockStateHolder;
+import com.sk89q.worldedit.world.block.BlockTypes;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.Future;
+
+public final class NullChunk implements IQueueChunk {
+    private static final NullChunk instance = new NullChunk();
+
+    public static NullChunk getInstance() {
+        return instance;
+    }
+
+    public int getX() {
+        return 0;
+    }
+
+    public int getZ() {
+        return 0;
+    }
+
+    public boolean isEmpty() {
+        return true;
+    }
+
+    public Future call() {
+        return null;
+    }
+
+    public void filterBlocks(@NotNull Filter filter, @NotNull ChunkFilterBlock block, @Nullable Region region, boolean full) {
+    }
+
+    public boolean setBiome(int x, int y, int z, @NotNull BiomeType biome) {
+        return false;
+    }
+
+    public boolean setTile(int x, int y, int z, @NotNull CompoundTag tag) {
+        return false;
+    }
+
+    public void setEntity(@NotNull CompoundTag tag) {
+    }
+
+    public void removeEntity(@NotNull UUID uuid) {
+    }
+
+    @Nullable
+    public Set<UUID> getEntityRemoves() {
+        return null;
+    }
+
+    public int getSkyLight(int x, int y, int z) {
+        return 15;
+    }
+
+    @NotNull
+    public char[][] getLight() {
+        return new char[0][];
+    }
+
+    @NotNull
+    public char[][] getSkyLight() {
+        return new char[0][];
+    }
+
+    @NotNull
+    public int[] getHeightMap(@Nullable HeightMapType type) {
+        return new int[256];
+    }
+
+    public int getEmmittedLight(int x, int y, int z) {
+        return 15;
+    }
+
+    public void setSkyLight(int x, int y, int z, int value) {
+    }
+
+    public void setHeightMap(@Nullable HeightMapType type, @Nullable int[] heightMap) {
+    }
+
+    public boolean fullySupports3DBiomes() {
+        return false;
+    }
+
+    public void setBlockLight(int x, int y, int z, int value) {
+    }
+
+    public void setFullBright(int layer) {
+    }
+
+    public void removeSectionLighting(int layer, boolean sky) {
+    }
+
+    public void setSkyLightLayer(int layer, @Nullable char[] toSet) {
+    }
+
+    public void setLightLayer(int layer, @Nullable char[] toSet) {
+    }
+
+    @Nullable
+    public BiomeType[] getBiomes() {
+        return null;
+    }
+
+    public <T extends BlockStateHolder<T>> boolean setBlock(int x, int y, int z, T holder) {
+        return false;
+    }
+
+    public void setBlocks(int layer, @NotNull char[] data) {
+    }
+
+    @Nullable
+    public BiomeType getBiomeType(int x, int y, int z) {
+        return null;
+    }
+
+    public boolean hasSection(int layer) {
+        return false;
+    }
+
+    @NotNull
+    public BlockState getBlock(int x, int y, int z) {
+        return BlockTypes.__RESERVED__.getDefaultState();
+    }
+
+    @NotNull
+    public BaseBlock getFullBlock(int x, int y, int z) {
+        return BlockTypes.__RESERVED__.getDefaultState().toBaseBlock();
+    }
+
+    @NotNull
+    public Map<BlockVector3, CompoundTag> getTiles() {
+        return Collections.emptyMap();
+    }
+
+    @Nullable
+    public CompoundTag getTile(int x, int y, int z) {
+        return null;
+    }
+
+    @NotNull
+    public Set<CompoundTag> getEntities() {
+        return Collections.emptySet();
+    }
+
+    @Nullable
+    public char[] load(int layer) {
+        return null;
+    }
+
+    @Nullable
+    public CompoundTag getEntity(@NotNull UUID uuid) {
+        return null;
+    }
+
+    @Nullable
+    public <T extends Future<T>> T call(@Nullable IChunkSet set, @Nullable Runnable finalize) {
+        return null;
+    }
+
+    public boolean trim(boolean aggressive) {
+        return true;
+    }
+
+    public boolean trim(boolean aggressive, int layer) {
+        return true;
+    }
+
+    private NullChunk() {
+    }
+}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/chunk/NullChunk.kt

@@ -1,178 +0,0 @@
-package com.boydti.fawe.beta.implementation.chunk
-
-import com.boydti.fawe.beta.Filter
-import com.boydti.fawe.beta.IChunkSet
-import com.boydti.fawe.beta.IQueueChunk
-import com.boydti.fawe.beta.implementation.filter.block.ChunkFilterBlock
-import com.boydti.fawe.beta.implementation.lighting.HeightMapType
-import com.sk89q.jnbt.CompoundTag
-import com.sk89q.worldedit.math.BlockVector3
-import com.sk89q.worldedit.regions.Region
-import com.sk89q.worldedit.world.biome.BiomeType
-import com.sk89q.worldedit.world.block.BaseBlock
-import com.sk89q.worldedit.world.block.BlockState
-import com.sk89q.worldedit.world.block.BlockStateHolder
-import com.sk89q.worldedit.world.block.BlockTypes
-import java.util.*
-import java.util.concurrent.Future
-
-object NullChunk : IQueueChunk<Nothing> {
-
-    override fun getX(): Int {
-        return 0
-    }
-
-    override fun getZ(): Int {
-        return 0
-    }
-
-    override fun isEmpty(): Boolean {
-        return true
-    }
-
-    override fun call(): Nothing? {
-        return null
-    }
-
-    override fun filterBlocks(filter: Filter, block: ChunkFilterBlock, region: Region?, full: Boolean) {
-
-    }
-
-    //    @Override
-    //    public void flood(Flood flood, FilterBlockMask mask, ChunkFilterBlock block) {
-    //
-    //    }
-
-    override fun setBiome(x: Int, y: Int, z: Int, biome: BiomeType): Boolean {
-        return false
-    }
-
-    override fun setTile(x: Int, y: Int, z: Int, tag: CompoundTag): Boolean {
-        return false
-    }
-
-    override fun setEntity(tag: CompoundTag) {
-
-    }
-
-    override fun removeEntity(uuid: UUID) {
-
-    }
-
-    override fun getEntityRemoves(): Set<UUID>? {
-        return null
-    }
-
-    override fun getSkyLight(x: Int, y: Int, z: Int): Int {
-        return 15
-    }
-
-    override fun getLight(): Array<CharArray> {
-        return emptyArray()
-    }
-
-    override fun getSkyLight(): Array<CharArray> {
-        return emptyArray()
-    }
-
-    override fun getHeightMap(type: HeightMapType?): IntArray {
-        return IntArray(256)
-    }
-
-    override fun getEmmittedLight(x: Int, y: Int, z: Int): Int {
-        return 15
-    }
-
-    override fun setSkyLight(x: Int, y: Int, z: Int, value: Int) {
-
-    }
-
-    override fun setHeightMap(type: HeightMapType?, heightMap: IntArray?) {
-
-    }
-
-    override fun fullySupports3DBiomes(): Boolean {
-        return false
-    }
-
-    override fun setBlockLight(x: Int, y: Int, z: Int, value: Int) {
-
-    }
-
-    override fun setFullBright(layer: Int) {
-
-    }
-
-    override fun removeSectionLighting(layer: Int, sky: Boolean) {
-
-    }
-
-    override fun setSkyLightLayer(layer: Int, toSet: CharArray?) {
-
-    }
-
-    override fun setLightLayer(layer: Int, toSet: CharArray?) {
-
-    }
-
-    override fun getBiomes(): Array<BiomeType>? {
-        return null
-    }
-
-    override fun <B : BlockStateHolder<B>> setBlock(x: Int, y: Int, z: Int, block: B): Boolean {
-        return false
-    }
-
-    override fun setBlocks(layer: Int, data: CharArray) {
-
-    }
-
-    override fun getBiomeType(x: Int, y: Int, z: Int): BiomeType? {
-        return null
-    }
-
-    override fun hasSection(layer: Int): Boolean {
-        return false
-    }
-
-    override fun getBlock(x: Int, y: Int, z: Int): BlockState {
-        return BlockTypes.__RESERVED__!!.defaultState
-    }
-
-    override fun getFullBlock(x: Int, y: Int, z: Int): BaseBlock {
-        return BlockTypes.__RESERVED__!!.defaultState.toBaseBlock()
-    }
-
-    override fun getTiles(): Map<BlockVector3, CompoundTag> {
-        return emptyMap()
-    }
-
-    override fun getTile(x: Int, y: Int, z: Int): CompoundTag? {
-        return null
-    }
-
-    override fun getEntities(): Set<CompoundTag> {
-        return emptySet()
-    }
-
-    override fun load(layer: Int): CharArray? {
-        return null
-    }
-
-    override fun getEntity(uuid: UUID): CompoundTag? {
-        return null
-    }
-
-    override fun <T : Future<T>?> call(set: IChunkSet?, finalize: Runnable?): T? {
-        return null
-    }
-
-    override fun trim(aggressive: Boolean): Boolean {
-        return true
-    }
-
-    override fun trim(aggressive: Boolean, layer: Int): Boolean {
-        return true
-    }
-}
-

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/BatchProcessorHolder.java

@@ -6,7 +6,7 @@ import com.boydti.fawe.beta.IChunkGet;
 import com.boydti.fawe.beta.IChunkSet;
 
 public class BatchProcessorHolder implements IBatchProcessorHolder {
-    private IBatchProcessor processor = EmptyBatchProcessor.INSTANCE;
+    private IBatchProcessor processor = EmptyBatchProcessor.getInstance();
 
     @Override
     public IBatchProcessor getProcessor() {

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/EmptyBatchProcessor.java

@@ -0,0 +1,37 @@
+package com.boydti.fawe.beta.implementation.processors;
+
+import com.boydti.fawe.beta.IBatchProcessor;
+import com.boydti.fawe.beta.IChunk;
+import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
+import com.sk89q.worldedit.extent.Extent;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public final class EmptyBatchProcessor implements IBatchProcessor {
+    private static final EmptyBatchProcessor instance = new EmptyBatchProcessor();
+
+    public static EmptyBatchProcessor getInstance() {
+        return instance;
+    }
+
+    @NotNull
+    public Extent construct(@Nullable Extent child) {
+        return child;
+    }
+
+    @NotNull
+    public IChunkSet processSet(@Nullable IChunk chunk, @Nullable IChunkGet get, @Nullable IChunkSet set) {
+        return set;
+    }
+
+    @NotNull
+    public IBatchProcessor join(@Nullable IBatchProcessor other) {
+        return other;
+    }
+
+    private EmptyBatchProcessor() {
+    }
+
+}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/EmptyBatchProcessor.kt

@@ -1,22 +0,0 @@
-package com.boydti.fawe.beta.implementation.processors
-
-import com.boydti.fawe.beta.IBatchProcessor
-import com.boydti.fawe.beta.IChunk
-import com.boydti.fawe.beta.IChunkGet
-import com.boydti.fawe.beta.IChunkSet
-import com.sk89q.worldedit.extent.Extent
-
-object EmptyBatchProcessor : IBatchProcessor {
-
-    override fun construct(child: Extent?): Extent {
-        return child!!
-    }
-
-    override fun processSet(chunk: IChunk?, get: IChunkGet?, set: IChunkSet?): IChunkSet {
-        return set!!
-    }
-
-    override fun join(other: IBatchProcessor?): IBatchProcessor {
-        return other!!
-    }
-}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/MultiBatchProcessor.java

@@ -29,7 +29,7 @@ public class MultiBatchProcessor implements IBatchProcessor {
         }
         switch (list.size()) {
             case 0:
-                return EmptyBatchProcessor.INSTANCE;
+                return EmptyBatchProcessor.getInstance();
             case 1:
                 return list.get(0);
             default:

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/NullProcessor.java

@@ -0,0 +1,32 @@
+package com.boydti.fawe.beta.implementation.processors;
+
+import com.boydti.fawe.beta.IBatchProcessor;
+import com.boydti.fawe.beta.IChunk;
+import com.boydti.fawe.beta.IChunkGet;
+import com.boydti.fawe.beta.IChunkSet;
+import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.extent.NullExtent;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public final class NullProcessor implements IBatchProcessor {
+    private static final NullProcessor instance = new NullProcessor();
+
+    public static NullProcessor getInstance() {
+        return instance;
+    }
+
+    @Nullable
+    public IChunkSet processSet(@NotNull IChunk chunk, @NotNull IChunkGet get, @NotNull IChunkSet set) {
+        return null;
+    }
+
+    @NotNull
+    public Extent construct(@NotNull Extent child) {
+        return new NullExtent();
+    }
+
+    private NullProcessor() {
+    }
+
+}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/processors/NullProcessor.kt

@@ -1,19 +0,0 @@
-package com.boydti.fawe.beta.implementation.processors
-
-import com.boydti.fawe.beta.IBatchProcessor
-import com.boydti.fawe.beta.IChunk
-import com.boydti.fawe.beta.IChunkGet
-import com.boydti.fawe.beta.IChunkSet
-import com.sk89q.worldedit.extent.Extent
-import com.sk89q.worldedit.extent.NullExtent
-
-object NullProcessor : IBatchProcessor {
-
-    override fun processSet(chunk: IChunk, get: IChunkGet, set: IChunkSet): IChunkSet? {
-        return null
-    }
-
-    override fun construct(child: Extent): Extent {
-        return NullExtent()
-    }
-}

worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/queue/SingleThreadQueueExtent.java

@@ -109,7 +109,7 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
         this.lastPair = Long.MAX_VALUE;
         this.currentThread = null;
         this.initialized = false;
-        this.setProcessor(EmptyBatchProcessor.INSTANCE);
+        this.setProcessor(EmptyBatchProcessor.getInstance());
     }
 
     /**
@@ -128,7 +128,7 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
         }
         this.cacheGet = get;
         this.cacheSet = set;
-        this.setProcessor(EmptyBatchProcessor.INSTANCE);
+        this.setProcessor(EmptyBatchProcessor.getInstance());
         initialized = true;
     }
 
@@ -223,8 +223,8 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
         }
         if (!processGet(x, z)) {
             lastPair = pair;
-            lastChunk = NullChunk.INSTANCE;
+            lastChunk = NullChunk.getInstance();
-            return NullChunk.INSTANCE;
+            return NullChunk.getInstance();
         }
         IQueueChunk chunk = chunks.get(pair);
         if (chunk != null) {

worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/EmptyClipboard.java

@@ -0,0 +1,104 @@
+package com.boydti.fawe.object.clipboard;
+
+import com.boydti.fawe.beta.implementation.lighting.HeightMapType;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.entity.Entity;
+import com.sk89q.worldedit.extent.clipboard.Clipboard;
+import com.sk89q.worldedit.math.BlockVector3;
+import com.sk89q.worldedit.regions.CuboidRegion;
+import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.world.biome.BiomeType;
+import com.sk89q.worldedit.world.block.BaseBlock;
+import com.sk89q.worldedit.world.block.BlockState;
+import com.sk89q.worldedit.world.block.BlockStateHolder;
+import com.sk89q.worldedit.world.block.BlockTypes;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public final class EmptyClipboard implements Clipboard {
+    private static final EmptyClipboard instance = new EmptyClipboard();
+
+    public static EmptyClipboard getInstance() {
+        return instance;
+    }
+
+    @NotNull
+    public Region getRegion() {
+        return new CuboidRegion(BlockVector3.ZERO, BlockVector3.ZERO);
+    }
+
+    @NotNull
+    public BlockVector3 getDimensions() {
+        return BlockVector3.ZERO;
+    }
+
+    @NotNull
+    public BlockVector3 getOrigin() {
+        return BlockVector3.ZERO;
+    }
+
+    public void setOrigin(@NotNull BlockVector3 origin) {
+    }
+
+    public void removeEntity(@NotNull Entity entity) {
+    }
+
+    @NotNull
+    public BlockVector3 getMinimumPoint() {
+        return BlockVector3.ZERO;
+    }
+
+    @NotNull
+    public BlockVector3 getMaximumPoint() {
+        return BlockVector3.ZERO;
+    }
+
+    @NotNull
+    public BaseBlock getFullBlock(@NotNull BlockVector3 position) {
+        return BlockTypes.AIR.getDefaultState().toBaseBlock();
+    }
+
+    @NotNull
+    public BlockState getBlock(@NotNull BlockVector3 position) {
+        return BlockTypes.AIR.getDefaultState();
+    }
+
+    @Nullable
+    public BiomeType getBiome(@NotNull BlockVector3 position) {
+        return null;
+    }
+
+    @NotNull
+    public int[] getHeightMap(@Nullable HeightMapType type) {
+        return new int[256];
+    }
+
+    public boolean setBlock(@NotNull BlockVector3 position, BlockStateHolder block) throws WorldEditException {
+        return false;
+    }
+
+    public boolean setBlock(int x, int y, int z, BlockStateHolder block) throws WorldEditException {
+        return false;
+    }
+
+    public boolean setTile(int x, int y, int z, @NotNull CompoundTag tile) throws WorldEditException {
+        return false;
+    }
+
+    public boolean setBiome(@NotNull BlockVector3 position, @NotNull BiomeType biome) {
+        return false;
+    }
+
+    public boolean fullySupports3DBiomes() {
+        return false;
+    }
+
+    public boolean setBiome(int x, int y, int z, @NotNull BiomeType biome) {
+        return false;
+    }
+
+    private EmptyClipboard() {
+    }
+
+}

worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/EmptyClipboard.kt

@@ -1,83 +0,0 @@
-package com.boydti.fawe.`object`.clipboard
-
-import com.boydti.fawe.beta.implementation.lighting.HeightMapType
-import com.sk89q.jnbt.CompoundTag
-import com.sk89q.worldedit.WorldEditException
-import com.sk89q.worldedit.entity.Entity
-import com.sk89q.worldedit.extent.clipboard.Clipboard
-import com.sk89q.worldedit.math.BlockVector2
-import com.sk89q.worldedit.math.BlockVector3
-import com.sk89q.worldedit.regions.CuboidRegion
-import com.sk89q.worldedit.regions.Region
-import com.sk89q.worldedit.world.biome.BiomeType
-import com.sk89q.worldedit.world.block.BaseBlock
-import com.sk89q.worldedit.world.block.BlockState
-import com.sk89q.worldedit.world.block.BlockStateHolder
-import com.sk89q.worldedit.world.block.BlockTypes
-
-object EmptyClipboard : Clipboard {
-    override fun getRegion(): Region {
-        return CuboidRegion(BlockVector3.ZERO, BlockVector3.ZERO)
-    }
-
-    override fun getDimensions(): BlockVector3 {
-        return BlockVector3.ZERO
-    }
-
-    override fun getOrigin(): BlockVector3 {
-        return BlockVector3.ZERO
-    }
-
-    override fun setOrigin(origin: BlockVector3) {}
-    override fun removeEntity(entity: Entity) {}
-    override fun getMinimumPoint(): BlockVector3 {
-        return BlockVector3.ZERO
-    }
-
-    override fun getMaximumPoint(): BlockVector3 {
-        return BlockVector3.ZERO
-    }
-
-    override fun getFullBlock(position: BlockVector3): BaseBlock {
-        return BlockTypes.AIR!!.defaultState.toBaseBlock()
-    }
-
-    override fun getBlock(position: BlockVector3): BlockState {
-        return BlockTypes.AIR!!.defaultState
-    }
-
-    override fun getBiome(position: BlockVector3): BiomeType? {
-        return null
-    }
-
-    override fun getHeightMap(type: HeightMapType?): IntArray {
-        return IntArray(256)
-    }
-
-    @Throws(WorldEditException::class)
-    override fun <T : BlockStateHolder<T>?> setBlock(position: BlockVector3, block: T): Boolean {
-        return false
-    }
-
-    @Throws(WorldEditException::class)
-    override fun <T : BlockStateHolder<T>?> setBlock(x: Int, y: Int, z: Int, block: T): Boolean {
-        return false
-    }
-
-    @Throws(WorldEditException::class)
-    override fun setTile(x: Int, y: Int, z: Int, tile: CompoundTag): Boolean {
-        return false
-    }
-
-    override fun setBiome(position: BlockVector3, biome: BiomeType): Boolean {
-        return false
-    }
-
-    override fun fullySupports3DBiomes(): Boolean {
-        return false
-    }
-
-    override fun setBiome(x: Int, y: Int, z: Int, biome: BiomeType): Boolean {
-        return false
-    }
-}

worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/LazyClipboardHolder.java

@@ -21,7 +21,7 @@ public class LazyClipboardHolder extends URIClipboardHolder {
      *
      */
     public LazyClipboardHolder(URI uri, ByteSource source, ClipboardFormat format, UUID uuid) {
-        super(uri, EmptyClipboard.INSTANCE);
+        super(uri, EmptyClipboard.getInstance());
         this.source = source;
         this.format = format;
         this.uuid = uuid != null ? uuid : UUID.randomUUID();

worldedit-core/src/main/java/com/boydti/fawe/object/clipboard/MultiClipboardHolder.java

@@ -22,7 +22,7 @@ public class MultiClipboardHolder extends URIClipboardHolder {
     }
 
     public MultiClipboardHolder(URI uri) {
-        super(uri, EmptyClipboard.INSTANCE);
+        super(uri, EmptyClipboard.getInstance());
         holders = new ArrayList<>();
     }
 
@@ -32,7 +32,7 @@ public class MultiClipboardHolder extends URIClipboardHolder {
     }
 
     public MultiClipboardHolder(Clipboard clipboard) {
-        super(URI.create(""), EmptyClipboard.INSTANCE);
+        super(URI.create(""), EmptyClipboard.getInstance());
         holders = new ArrayList<>();
         URI uri = URI.create("");
         if (clipboard.getURI() != null) {
@@ -140,7 +140,7 @@ public class MultiClipboardHolder extends URIClipboardHolder {
             cached = available = getClipboards().toArray(new Clipboard[0]);
         }
         switch (available.length) {
-            case 0: return EmptyClipboard.INSTANCE;
+            case 0: return EmptyClipboard.getInstance();
             case 1: return available[0];
         }
 

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

@@ -614,7 +614,7 @@ public class BrushTool
         newVisualExtent.init(chunkExtent);
 
         editSession.addProcessor(newVisualExtent);
-        editSession.addProcessor(NullProcessor.INSTANCE);
+        editSession.addProcessor(NullProcessor.getInstance());
 
         BlockVector3 position = getPosition(editSession, player);
         if (position != null) {

worldedit-core/src/main/java/com/sk89q/worldedit/world/NullWorld.java

@@ -166,7 +166,7 @@ public class NullWorld extends AbstractWorld {
 
     @Override
     public IChunkGet get(int x, int z) {
-        return NullChunkGet.INSTANCE;
+        return NullChunkGet.getInstance();
     }
 
     @Override

worldedit-libs/core/build.gradle.kts

@@ -14,5 +14,4 @@ dependencies {
     "shade"("org.enginehub.piston:core:${Versions.PISTON}")
     "shade"("org.enginehub.piston.core-ap:runtime:${Versions.PISTON}")
     "shade"("org.enginehub.piston:default-impl:${Versions.PISTON}")
-    "shade"("org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.4.0")
 }