Begin fixing layer brush

- Required new argument parser, which should ultimately be made into a singe blockstate parser for best results, and proper tab-completion
 - The layer brush itself is broken because of the changes to internal block retrieval from legacy

worldedit-core/src/main/java/com/boydti/fawe/object/brush/LayerBrush.java

@@ -25,8 +25,8 @@ public class LayerBrush implements Brush {
     private final BlockState[] layers;
     private RecursiveVisitor visitor;
 
-    public LayerBrush(BlockState[] layers) {
-        this.layers = layers;
+    public LayerBrush(Pattern[] layers) {
+        this.layers = Arrays.stream(layers).map(p -> p.applyBlock(BlockVector3.ZERO).toBlockState()).toArray(BlockState[]::new);
     }
 
     @Override
@@ -41,7 +41,7 @@ public class LayerBrush implements Brush {
         BlockVectorSet visited = visitor.getVisited();
         visitor = new RecursiveVisitor(new LayerBrushMask(editSession, visitor, layers, adjacent), pos -> {
             int depth = visitor.getDepth();
-            BlockState currentPattern = layers[depth];
+            Pattern currentPattern = layers[depth];
             return currentPattern.apply(editSession, pos, pos);
         }, layers.length - 1);
         for (BlockVector3 pos : visited) {
@@ -50,4 +50,5 @@ public class LayerBrush implements Brush {
         Operations.completeBlindly(visitor);
         visitor = null;
     }
+
 }

worldedit-core/src/main/java/com/boydti/fawe/object/brush/mask/LayerBrushMask.java

@@ -4,12 +4,15 @@ import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.AbstractExtentMask;
 import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.function.visitor.BreadthFirstSearch;
 import com.sk89q.worldedit.function.visitor.RecursiveVisitor;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.MutableBlockVector3;
 import com.sk89q.worldedit.world.block.BlockState;
 
+import java.util.Arrays;
+
 public class LayerBrushMask extends AbstractExtentMask {
 
     private final EditSession editSession;
@@ -33,7 +36,7 @@ public class LayerBrushMask extends AbstractExtentMask {
 
     @Override
     public boolean test(BlockVector3 pos) {
-        int depth = visitor.getDepth() + 1;
+        int depth = (visitor.getDepth() + 1) % layers.length;
         if (depth > 1) {
             boolean found = false;
             BlockState previous = layers[depth - 1];

worldedit-core/src/main/java/com/sk89q/worldedit/command/BrushCommands.java

@@ -96,6 +96,7 @@ import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.mask.SingleBlockTypeMask;
 import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.internal.annotation.PatternList;
 import com.sk89q.worldedit.internal.annotation.ClipboardMask;
 import com.sk89q.worldedit.internal.expression.Expression;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -108,7 +109,6 @@ import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
 import com.sk89q.worldedit.util.formatting.text.event.ClickEvent;
 import com.sk89q.worldedit.world.block.BlockID;
-import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 import com.sk89q.worldedit.world.block.BlockType;
 import com.sk89q.worldedit.world.block.BlockTypes;
@@ -632,10 +632,13 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.layer")
     public void surfaceLayer(InjectedValueAccess context,
                              @Arg(desc = "Expression")
-                                 Expression radius, List<BlockState> blockLayers)
+                                 Expression radius,
+                             @Arg(desc = "List of comma-separated patterns")
+                             @PatternList()
+                                 List<Pattern> patternLayers)
         throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        set(context, new LayerBrush(blockLayers.toArray(new BlockState[0]))).setSize(radius);
+        set(context, new LayerBrush(patternLayers.toArray(new Pattern[0]))).setSize(radius);
     }
 
     @Command(
@@ -683,7 +686,9 @@ public class BrushCommands {
                                     @Arg(desc = "double", def = "1")
                                         double points,
                                     @Arg(desc = "double", def = "1")
-                                        double distance, List<String> commandStr)
+                                        double distance,
+                                    @Arg(desc = "List of comma-separated commands")
+                                        List<String> commandStr)
         throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
         set(context,

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/Annotations.java

@@ -20,6 +20,7 @@
 package com.sk89q.worldedit.extension.platform;
 
 import com.google.auto.value.AutoAnnotation;
+import com.sk89q.worldedit.internal.annotation.PatternList;
 import com.sk89q.worldedit.internal.annotation.Radii;
 
 /**
@@ -32,6 +33,11 @@ class Annotations {
         return new AutoAnnotation_Annotations_radii(value);
     }
 
+    @AutoAnnotation
+    static PatternList patternList() {
+        return new AutoAnnotation_Annotations_patternList();
+    }
+
     private Annotations() {
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/PlatformCommandManager.java

@@ -261,6 +261,9 @@ public final class PlatformCommandManager {
         SideEffectConverter.register(commandManager);
         HeightConverter.register(commandManager);
         OffsetConverter.register(worldEdit, commandManager);
+        commandManager.registerConverter(Key.of(com.sk89q.worldedit.function.pattern.Pattern.class, Annotations.patternList()),
+            CommaSeparatedValuesConverter.wrap(commandManager.getConverter(Key.of(
+                com.sk89q.worldedit.function.pattern.Pattern.class)).get()));
 
         registerBindings(new ConsumeBindings(worldEdit, this));
         registerBindings(new PrimitiveBindings(worldEdit));

worldedit-core/src/main/java/com/sk89q/worldedit/internal/annotation/PatternList.java

@@ -0,0 +1,36 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.internal.annotation;
+
+import org.enginehub.piston.inject.InjectAnnotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Annotates a {@code List<BlockState>} parameter to inject a list of BlockStates.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.PARAMETER)
+@InjectAnnotation
+public @interface PatternList {
+}