Start work on modularising masks and patterns

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/BlockFactory.java

@@ -21,6 +21,7 @@ package com.sk89q.worldedit.extension.factory;
 
 import com.sk89q.util.StringUtil;
 import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.factory.parser.DefaultBlockParser;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
@@ -47,7 +48,7 @@ public class BlockFactory extends AbstractFactory<BlockStateHolder> {
     public BlockFactory(WorldEdit worldEdit) {
         super(worldEdit);
 
-        parsers.add(new DefaultBlockParser(worldEdit));
+        register(new DefaultBlockParser(worldEdit));
     }
 
     /**

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/ItemFactory.java

@@ -21,6 +21,7 @@ package com.sk89q.worldedit.extension.factory;
 
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.blocks.BaseItem;
+import com.sk89q.worldedit.extension.factory.parser.DefaultItemParser;
 import com.sk89q.worldedit.internal.registry.AbstractFactory;
 
 public class ItemFactory extends AbstractFactory<BaseItem> {
@@ -33,7 +34,7 @@ public class ItemFactory extends AbstractFactory<BaseItem> {
     public ItemFactory(WorldEdit worldEdit) {
         super(worldEdit);
 
-        parsers.add(new DefaultItemParser(worldEdit));
+        register(new DefaultItemParser(worldEdit));
     }
 
 }

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/MaskFactory.java

@@ -20,8 +20,24 @@
 package com.sk89q.worldedit.extension.factory;
 
 import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.factory.parser.mask.BlockCategoryMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.DefaultMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.ExistingMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.LazyRegionMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.NegateMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.NoiseMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.RegionMaskParser;
+import com.sk89q.worldedit.extension.factory.parser.mask.SolidMaskParser;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.NoMatchException;
+import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.MaskIntersection;
 import com.sk89q.worldedit.internal.registry.AbstractFactory;
+import com.sk89q.worldedit.internal.registry.InputParser;
+
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * A registry of known {@link Mask}s. Provides methods to instantiate
@@ -40,7 +56,42 @@ public final class MaskFactory extends AbstractFactory<Mask> {
     public MaskFactory(WorldEdit worldEdit) {
         super(worldEdit);
 
-        parsers.add(new DefaultMaskParser(worldEdit));
+        register(new ExistingMaskParser(worldEdit));
+        register(new SolidMaskParser(worldEdit));
+        register(new LazyRegionMaskParser(worldEdit));
+        register(new RegionMaskParser(worldEdit));
+        register(new BlockCategoryMaskParser(worldEdit));
+        register(new NoiseMaskParser(worldEdit));
+        register(new NegateMaskParser(worldEdit));
+        register(new DefaultMaskParser(worldEdit));
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        List<Mask> masks = new ArrayList<>();
+
+        for (String component : input.split(" ")) {
+            if (component.isEmpty()) {
+                continue;
+            }
+
+            for (InputParser<Mask> parser : getParsers()) {
+                Mask match = parser.parseFromInput(component, context);
+
+                if (match != null) {
+                    masks.add(match);
+                }
+            }
+        }
+
+        switch (masks.size()) {
+            case 0:
+                throw new NoMatchException("No match for '" + input + "'");
+            case 1:
+                return masks.get(0);
+            default:
+                return new MaskIntersection(masks);
+        }
     }
 
 }

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/PatternFactory.java

@@ -20,6 +20,9 @@
 package com.sk89q.worldedit.extension.factory;
 
 import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.factory.parser.pattern.ClipboardPatternParser;
+import com.sk89q.worldedit.extension.factory.parser.pattern.RandomPatternParser;
+import com.sk89q.worldedit.extension.factory.parser.pattern.SingleBlockPatternParser;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.internal.registry.AbstractFactory;
 
@@ -40,9 +43,9 @@ public final class PatternFactory extends AbstractFactory<Pattern> {
     public PatternFactory(WorldEdit worldEdit) {
         super(worldEdit);
 
-        parsers.add(new HashTagPatternParser(worldEdit));
+        register(new ClipboardPatternParser(worldEdit));
-        parsers.add(new SingleBlockPatternParser(worldEdit));
+        register(new SingleBlockPatternParser(worldEdit));
-        parsers.add(new RandomPatternParser(worldEdit));
+        register(new RandomPatternParser(worldEdit));
     }
 
 }

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/DefaultBlockParser.java

@@ -17,7 +17,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.extension.factory;
+package com.sk89q.worldedit.extension.factory.parser;
 
 import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.NotABlockException;
@@ -52,9 +52,9 @@ import java.util.Map;
 /**
  * Parses block input strings.
  */
-class DefaultBlockParser extends InputParser<BlockStateHolder> {
+public class DefaultBlockParser extends InputParser<BlockStateHolder> {
 
-    protected DefaultBlockParser(WorldEdit worldEdit) {
+    public DefaultBlockParser(WorldEdit worldEdit) {
         super(worldEdit);
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/DefaultItemParser.java

@@ -17,7 +17,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.extension.factory;
+package com.sk89q.worldedit.extension.factory.parser;
 
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.blocks.BaseItem;
@@ -30,7 +30,7 @@ import com.sk89q.worldedit.world.registry.LegacyMapper;
 
 public class DefaultItemParser extends InputParser<BaseItem> {
 
-    protected DefaultItemParser(WorldEdit worldEdit) {
+    public DefaultItemParser(WorldEdit worldEdit) {
         super(worldEdit);
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/BlockCategoryMaskParser.java

@@ -0,0 +1,55 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.function.mask.BlockCategoryMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.session.request.Request;
+import com.sk89q.worldedit.world.block.BlockCategories;
+import com.sk89q.worldedit.world.block.BlockCategory;
+
+public class BlockCategoryMaskParser extends InputParser<Mask> {
+
+    public BlockCategoryMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (input.startsWith("##")) {
+            Extent extent = Request.request().getEditSession();
+
+            // This means it's a tag mask.
+            BlockCategory category = BlockCategories.get(input.substring(2).toLowerCase());
+            if (category == null) {
+                throw new InputParseException("Unrecognised tag '" + input.substring(2) + '\'');
+            } else {
+                return new BlockCategoryMask(extent, category);
+            }
+        }
+
+        return null;
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/DefaultMaskParser.java

@@ -17,43 +17,32 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.extension.factory;
+package com.sk89q.worldedit.extension.factory.parser.mask;
 
-import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.input.InputParseException;
-import com.sk89q.worldedit.extension.input.NoMatchException;
 import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.mask.BiomeMask2D;
-import com.sk89q.worldedit.function.mask.BlockCategoryMask;
 import com.sk89q.worldedit.function.mask.BlockMask;
 import com.sk89q.worldedit.function.mask.ExistingBlockMask;
 import com.sk89q.worldedit.function.mask.ExpressionMask;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.mask.MaskIntersection;
 import com.sk89q.worldedit.function.mask.Masks;
-import com.sk89q.worldedit.function.mask.NoiseFilter;
 import com.sk89q.worldedit.function.mask.OffsetMask;
-import com.sk89q.worldedit.function.mask.RegionMask;
-import com.sk89q.worldedit.function.mask.SolidBlockMask;
 import com.sk89q.worldedit.internal.expression.Expression;
 import com.sk89q.worldedit.internal.expression.ExpressionException;
 import com.sk89q.worldedit.internal.registry.InputParser;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
-import com.sk89q.worldedit.math.noise.RandomNoise;
 import com.sk89q.worldedit.regions.shape.WorldEditExpressionEnvironment;
 import com.sk89q.worldedit.session.request.Request;
-import com.sk89q.worldedit.session.request.RequestSelection;
 import com.sk89q.worldedit.world.biome.BaseBiome;
 import com.sk89q.worldedit.world.biome.Biomes;
-import com.sk89q.worldedit.world.block.BlockCategories;
-import com.sk89q.worldedit.world.block.BlockCategory;
 import com.sk89q.worldedit.world.registry.BiomeRegistry;
 
-import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -61,77 +50,22 @@ import java.util.Set;
 /**
  * Parses mask input strings.
  */
-class DefaultMaskParser extends InputParser<Mask> {
+public class DefaultMaskParser extends InputParser<Mask> {
 
-    protected DefaultMaskParser(WorldEdit worldEdit) {
+    public DefaultMaskParser(WorldEdit worldEdit) {
         super(worldEdit);
     }
 
-    @Override
+    public Mask parseFromInput(String component, ParserContext context) throws InputParseException {
-    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
-        List<Mask> masks = new ArrayList<>();
-
-        for (String component : input.split(" ")) {
-            if (component.isEmpty()) {
-                continue;
-            }
-
-            Mask current = getBlockMaskComponent(masks, component, context);
-
-            masks.add(current);
-        }
-
-        switch (masks.size()) {
-            case 0:
-                return null;
-
-            case 1:
-                return masks.get(0);
-
-            default:
-                return new MaskIntersection(masks);
-        }
-    }
-
-    private Mask getBlockMaskComponent(List<Mask> masks, String component, ParserContext context) throws InputParseException {
         Extent extent = Request.request().getEditSession();
 
         final char firstChar = component.charAt(0);
         switch (firstChar) {
-            case '#':
-                if (component.equalsIgnoreCase("#existing")) {
-                    return new ExistingBlockMask(extent);
-                } else if (component.equalsIgnoreCase("#solid")) {
-                    return new SolidBlockMask(extent);
-                } else if (component.equalsIgnoreCase("#dregion")
-                        || component.equalsIgnoreCase("#dselection")
-                        || component.equalsIgnoreCase("#dsel")) {
-                    return new RegionMask(new RequestSelection());
-                } else if (component.equalsIgnoreCase("#selection")
-                        || component.equalsIgnoreCase("#region")
-                        || component.equalsIgnoreCase("#sel")) {
-                    try {
-                        return new RegionMask(context.requireSession().getSelection(context.requireWorld()).clone());
-                    } catch (IncompleteRegionException e) {
-                        throw new InputParseException("Please make a selection first.");
-                    }
-                } else if (component.startsWith("##")) {
-                    // This means it's a tag mask.
-                    BlockCategory category = BlockCategories.get(component.substring(2).toLowerCase());
-                    if (category == null) {
-                        throw new NoMatchException("Unrecognised tag '" + component.substring(2) + '\'');
-                    } else {
-                        return new BlockCategoryMask(extent, category);
-                    }
-                } else {
-                    throw new NoMatchException("Unrecognized mask '" + component + '\'');
-                }
-
             case '>':
             case '<':
                 Mask submask;
                 if (component.length() > 1) {
-                    submask = getBlockMaskComponent(masks, component.substring(1), context);
+                    submask = worldEdit.getMaskFactory().parseFromInput(component.substring(1), context);
                 } else {
                     submask = new ExistingBlockMask(extent);
                 }
@@ -141,8 +75,7 @@ class DefaultMaskParser extends InputParser<Mask> {
             case '$':
                 Set<BaseBiome> biomes = new HashSet<>();
                 String[] biomesList = component.substring(1).split(",");
-                BiomeRegistry biomeRegistry = WorldEdit.getInstance().getPlatformManager()
+                BiomeRegistry biomeRegistry = worldEdit.getPlatformManager().queryCapability(Capability.GAME_HOOKS).getRegistries().getBiomeRegistry();
-                        .queryCapability(Capability.GAME_HOOKS).getRegistries().getBiomeRegistry();
                 List<BaseBiome> knownBiomes = biomeRegistry.getBiomes();
                 for (String biomeName : biomesList) {
                     BaseBiome biome = Biomes.findBiomeByName(knownBiomes, biomeName, biomeRegistry);
@@ -154,10 +87,6 @@ class DefaultMaskParser extends InputParser<Mask> {
 
                 return Masks.asMask(new BiomeMask2D(context.requireExtent(), biomes));
 
-            case '%':
-                int i = Integer.parseInt(component.substring(1));
-                return new NoiseFilter(new RandomNoise(), ((double) i) / 100);
-
             case '=':
                 try {
                     Expression exp = Expression.compile(component.substring(1), "x", "y", "z");
@@ -169,11 +98,6 @@ class DefaultMaskParser extends InputParser<Mask> {
                     throw new InputParseException("Invalid expression: " + e.getMessage());
                 }
 
-            case '!':
-                if (component.length() > 1) {
-                    return Masks.negate(getBlockMaskComponent(masks, component.substring(1), context));
-                }
-
             default:
                 ParserContext tempContext = new ParserContext(context);
                 tempContext.setRestricted(false);

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/ExistingMaskParser.java

@@ -0,0 +1,51 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.google.common.collect.Lists;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.function.mask.ExistingBlockMask;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.internal.registry.SimpleInputParser;
+import com.sk89q.worldedit.session.request.Request;
+
+import java.util.List;
+
+public class ExistingMaskParser extends SimpleInputParser<Mask> {
+
+    public ExistingMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public List<String> getMatchedAliases() {
+        return Lists.newArrayList("#existing");
+    }
+
+    @Override
+    public Mask parseFromSimpleInput(String input, ParserContext context) throws InputParseException {
+        Extent extent = Request.request().getEditSession();
+
+        return new ExistingBlockMask(extent);
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/LazyRegionMaskParser.java

@@ -0,0 +1,48 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.google.common.collect.Lists;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.RegionMask;
+import com.sk89q.worldedit.internal.registry.SimpleInputParser;
+import com.sk89q.worldedit.session.request.RequestSelection;
+
+import java.util.List;
+
+public class LazyRegionMaskParser extends SimpleInputParser<Mask> {
+
+    public LazyRegionMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public List<String> getMatchedAliases() {
+        return Lists.newArrayList("#dregion", "#dselection", "#dsel");
+    }
+
+    @Override
+    public Mask parseFromSimpleInput(String input, ParserContext context) throws InputParseException {
+        return new RegionMask(new RequestSelection());
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/NegateMaskParser.java

@@ -0,0 +1,47 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.Masks;
+import com.sk89q.worldedit.internal.registry.InputParser;
+
+public class NegateMaskParser extends InputParser<Mask> {
+
+    public NegateMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!input.startsWith("!")) {
+            return null;
+        }
+
+        if (input.length() > 1) {
+            return Masks.negate(worldEdit.getMaskFactory().parseFromInput(input.substring(1), context));
+        } else {
+            throw new InputParseException("Can't negate nothing!");
+        }
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/NoiseMaskParser.java

@@ -0,0 +1,45 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.NoiseFilter;
+import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.math.noise.RandomNoise;
+
+public class NoiseMaskParser extends InputParser<Mask> {
+
+    public NoiseMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!input.startsWith("%")) {
+            return null;
+        }
+
+        int i = Integer.parseInt(input.substring(1));
+        return new NoiseFilter(new RandomNoise(), ((double) i) / 100);
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/RegionMaskParser.java

@@ -0,0 +1,52 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.google.common.collect.Lists;
+import com.sk89q.worldedit.IncompleteRegionException;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.RegionMask;
+import com.sk89q.worldedit.internal.registry.SimpleInputParser;
+
+import java.util.List;
+
+public class RegionMaskParser extends SimpleInputParser<Mask> {
+
+    public RegionMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public List<String> getMatchedAliases() {
+        return Lists.newArrayList("#region", "#selection", "#sel");
+    }
+
+    @Override
+    public Mask parseFromSimpleInput(String input, ParserContext context) throws InputParseException {
+        try {
+            return new RegionMask(context.requireSession().getSelection(context.requireWorld()).clone());
+        } catch (IncompleteRegionException e) {
+            throw new InputParseException("Please make a selection first.");
+        }
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/mask/SolidMaskParser.java

@@ -0,0 +1,51 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory.parser.mask;
+
+import com.google.common.collect.Lists;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.function.mask.SolidBlockMask;
+import com.sk89q.worldedit.internal.registry.SimpleInputParser;
+import com.sk89q.worldedit.session.request.Request;
+
+import java.util.List;
+
+public class SolidMaskParser extends SimpleInputParser<Mask> {
+
+    public SolidMaskParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public List<String> getMatchedAliases() {
+        return Lists.newArrayList("#solid");
+    }
+
+    @Override
+    public Mask parseFromSimpleInput(String input, ParserContext context) throws InputParseException {
+        Extent extent = Request.request().getEditSession();
+
+        return new SolidBlockMask(extent);
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/pattern/ClipboardPatternParser.java

@@ -17,8 +17,9 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.extension.factory;
+package com.sk89q.worldedit.extension.factory.parser.pattern;
 
+import com.google.common.collect.Lists;
 import com.sk89q.worldedit.EmptyClipboardException;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
@@ -27,22 +28,24 @@ import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.function.pattern.ClipboardPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.internal.registry.InputParser;
+import com.sk89q.worldedit.internal.registry.SimpleInputParser;
 import com.sk89q.worldedit.session.ClipboardHolder;
 
-class HashTagPatternParser extends InputParser<Pattern> {
+import java.util.List;
 
-    HashTagPatternParser(WorldEdit worldEdit) {
+public class ClipboardPatternParser extends SimpleInputParser<Pattern> {
+
+    public ClipboardPatternParser(WorldEdit worldEdit) {
         super(worldEdit);
     }
 
     @Override
-    public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
+    public List<String> getMatchedAliases() {
-        if (input.charAt(0) == '#') {
+        return Lists.newArrayList("#clipboard", "#copy");
-            if (!input.equals("#clipboard") && !input.equals("#copy")) {
-                throw new InputParseException("#clipboard or #copy is acceptable for patterns starting with #");
     }
 
+    @Override
+    public Pattern parseFromSimpleInput(String input, ParserContext context) throws InputParseException {
         LocalSession session = context.requireSession();
 
         if (session != null) {
@@ -56,9 +59,6 @@ class HashTagPatternParser extends InputParser<Pattern> {
         } else {
             throw new InputParseException("No session is available, so no clipboard is available");
         }
-        } else {
-            return null;
-        }
     }
 
 }

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/pattern/RandomPatternParser.java

@@ -17,10 +17,11 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.extension.factory;
+package com.sk89q.worldedit.extension.factory.parser.pattern;
 
 import com.sk89q.util.StringUtil;
 import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.factory.BlockFactory;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.function.pattern.BlockPattern;
@@ -29,9 +30,9 @@ import com.sk89q.worldedit.function.pattern.RandomPattern;
 import com.sk89q.worldedit.internal.registry.InputParser;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
 
-class RandomPatternParser extends InputParser<Pattern> {
+public class RandomPatternParser extends InputParser<Pattern> {
 
-    RandomPatternParser(WorldEdit worldEdit) {
+    public RandomPatternParser(WorldEdit worldEdit) {
         super(worldEdit);
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/parser/pattern/SingleBlockPatternParser.java

@@ -17,7 +17,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.extension.factory;
+package com.sk89q.worldedit.extension.factory.parser.pattern;
 
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.input.InputParseException;
@@ -26,9 +26,9 @@ import com.sk89q.worldedit.function.pattern.BlockPattern;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.internal.registry.InputParser;
 
-class SingleBlockPatternParser extends InputParser<Pattern> {
+public class SingleBlockPatternParser extends InputParser<Pattern> {
 
-    SingleBlockPatternParser(WorldEdit worldEdit) {
+    public SingleBlockPatternParser(WorldEdit worldEdit) {
         super(worldEdit);
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/internal/registry/AbstractFactory.java

@@ -21,12 +21,14 @@ package com.sk89q.worldedit.internal.registry;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
+import com.google.common.collect.Lists;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.NoMatchException;
 import com.sk89q.worldedit.extension.input.ParserContext;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -38,7 +40,7 @@ import java.util.List;
 public abstract class AbstractFactory<E> {
 
     protected final WorldEdit worldEdit;
-    protected final List<InputParser<E>> parsers = new ArrayList<>();
+    private final List<InputParser<E>> parsers = new ArrayList<>();
 
     /**
      * Create a new factory.
@@ -50,6 +52,17 @@ public abstract class AbstractFactory<E> {
         this.worldEdit = worldEdit;
     }
 
+    /**
+     * Gets an immutable list of parsers.
+     *
+     * To add parsers, use the register method.
+     *
+     * @return the parsers
+     */
+    public List<InputParser<E>> getParsers() {
+        return Collections.unmodifiableList(parsers);
+    }
+
     public E parseFromInput(String input, ParserContext context) throws InputParseException {
         E match;
 
@@ -64,4 +77,14 @@ public abstract class AbstractFactory<E> {
         throw new NoMatchException("No match for '" + input + "'");
     }
 
+    /**
+     * Registers an InputParser to this factory
+     *
+     * @param inputParser The input parser
+     */
+    public void register(InputParser<E> inputParser) {
+        checkNotNull(inputParser);
+
+        parsers.add(inputParser);
+    }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/internal/registry/InputParser.java

@@ -19,10 +19,13 @@
 
 package com.sk89q.worldedit.internal.registry;
 
+import com.google.common.collect.Lists;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
 
+import java.util.List;
+
 /**
  * Input parser interface for {@link AbstractFactory}.
  *
@@ -33,10 +36,18 @@ public abstract class InputParser<E> {
 
     protected final WorldEdit worldEdit;
 
-    protected InputParser(WorldEdit worldEdit) {
+    public InputParser(WorldEdit worldEdit) {
         this.worldEdit = worldEdit;
     }
 
     public abstract E parseFromInput(String input, ParserContext context) throws InputParseException;
 
+    /**
+     * Gets a list of suggestions of input to this parser.
+     *
+     * @return a list of suggestions
+     */
+    public List<String> getSuggestions() {
+        return Lists.newArrayList();
+    }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/internal/registry/SimpleInputParser.java

@@ -0,0 +1,71 @@
+/*
+ * 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 Lesser 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.internal.registry;
+
+import com.google.common.collect.Lists;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+
+import java.util.List;
+
+/**
+ * An input parser that only performs a single function from aliases.
+ *
+ * @param <E> the element
+ */
+public abstract class SimpleInputParser<E> extends InputParser<E> {
+
+    public SimpleInputParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    /**
+     * The strings this parser matches
+     *
+     * @return the matching aliases
+     */
+    public abstract List<String> getMatchedAliases();
+
+    @Override
+    public E parseFromInput(String input, ParserContext context) throws InputParseException {
+        if (!getMatchedAliases().contains(input)) {
+            return null;
+        }
+
+        return parseFromSimpleInput(input, context);
+    }
+
+    public abstract E parseFromSimpleInput(String input, ParserContext context) throws InputParseException;
+
+    /**
+     * Gets the primary name of this matcher
+     *
+     * @return the primary match
+     */
+    public String getPrimaryMatcher() {
+        return getMatchedAliases().get(0);
+    }
+
+    @Override
+    public List<String> getSuggestions() {
+        return Lists.newArrayList(getPrimaryMatcher());
+    }
+}