Port generation commands

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

@@ -19,35 +19,39 @@
 
 package com.sk89q.worldedit.command;
 
-import static com.google.common.base.Preconditions.checkNotNull;
-import static com.sk89q.worldedit.command.util.Logging.LogMode.ALL;
-import static com.sk89q.worldedit.command.util.Logging.LogMode.PLACEMENT;
-import static com.sk89q.worldedit.command.util.Logging.LogMode.POSITION;
-
-import com.sk89q.minecraft.util.commands.Command;
-import com.sk89q.minecraft.util.commands.CommandPermissions;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.command.util.CommandPermissions;
+import com.sk89q.worldedit.command.util.CommandPermissionsConditionGenerator;
 import com.sk89q.worldedit.command.util.Logging;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.function.pattern.Pattern;
+import com.sk89q.worldedit.internal.annotation.Radii;
 import com.sk89q.worldedit.internal.annotation.Selection;
 import com.sk89q.worldedit.internal.expression.ExpressionException;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldedit.math.Vector3;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.TreeGenerator.TreeType;
-import com.sk89q.worldedit.util.command.binding.Range;
-import com.sk89q.worldedit.util.command.binding.Switch;
-import com.sk89q.worldedit.util.command.binding.Text;
-import com.sk89q.worldedit.util.command.parametric.Optional;
 import com.sk89q.worldedit.world.biome.BiomeType;
+import org.enginehub.piston.annotation.Command;
+import org.enginehub.piston.annotation.CommandContainer;
+import org.enginehub.piston.annotation.param.Arg;
+import org.enginehub.piston.annotation.param.Switch;
+
+import java.util.List;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.sk89q.worldedit.command.util.Logging.LogMode.ALL;
+import static com.sk89q.worldedit.command.util.Logging.LogMode.PLACEMENT;
+import static com.sk89q.worldedit.command.util.Logging.LogMode.POSITION;
 
 /**
  * Commands for the generation of shapes and other objects.
  */
+@CommandContainer(superTypes = CommandPermissionsConditionGenerator.Registration.class)
 public class GenerationCommands {
 
     private final WorldEdit worldEdit;
@@ -63,54 +67,52 @@ public class GenerationCommands {
     }
 
     @Command(
-        aliases = { "/hcyl" },
+        name = "/hcyl",
-        usage = "<pattern> <radius>[,<radius>] [height]",
+        desc = "Generates a hollow cylinder."
-        desc = "Generates a hollow cylinder.",
-        help =
-            "Generates a hollow cylinder.\n" +
-            "By specifying 2 radii, separated by a comma,\n" +
-            "you can generate elliptical cylinders.\n" +
-            "The 1st radius is north/south, the 2nd radius is east/west.",
-        min = 2,
-        max = 3
     )
     @CommandPermissions("worldedit.generation.cylinder")
     @Logging(PLACEMENT)
-    public void hcyl(Player player, LocalSession session, EditSession editSession, Pattern pattern, String radiusString, @Optional("1") int height) throws WorldEditException {
+    public int hcyl(Player player, LocalSession session, EditSession editSession,
-        cyl(player, session, editSession, pattern, radiusString, height, true);
+                    @Arg(desc = "The pattern of blocks to generate")
+                        Pattern pattern,
+                    @Arg(desc = "The radii of the cylinder. 1st is N/S, 2nd is E/W")
+                    @Radii(2)
+                        List<Double> radii,
+                    @Arg(desc = "The height of the cylinder", def = "1")
+                        int height) throws WorldEditException {
+        return cyl(player, session, editSession, pattern, radii, height, true);
     }
 
     @Command(
-        aliases = { "/cyl" },
+        name = "/cyl",
-        usage = "<block> <radius>[,<radius>] [height]",
+        desc = "Generates a cylinder."
-        flags = "h",
-        desc = "Generates a cylinder.",
-        help =
-            "Generates a cylinder.\n" +
-            "By specifying 2 radii, separated by a comma,\n" +
-            "you can generate elliptical cylinders.\n" +
-            "The 1st radius is north/south, the 2nd radius is east/west.",
-        min = 2,
-        max = 3
     )
     @CommandPermissions("worldedit.generation.cylinder")
     @Logging(PLACEMENT)
-    public void cyl(Player player, LocalSession session, EditSession editSession, Pattern pattern, String radiusString, @Optional("1") int height, @Switch('h') boolean hollow) throws WorldEditException {
+    public int cyl(Player player, LocalSession session, EditSession editSession,
-        String[] radii = radiusString.split(",");
+                   @Arg(desc = "The pattern of blocks to generate")
+                       Pattern pattern,
+                   @Arg(desc = "The radii of the cylinder. 1st is N/S, 2nd is E/W")
+                   @Radii(2)
+                       List<Double> radii,
+                   @Arg(desc = "The height of the cylinder", def = "1")
+                       int height,
+                   @Switch(name = 'h', desc = "Make a hollow cylinder")
+                       boolean hollow) throws WorldEditException {
         final double radiusX, radiusZ;
-        switch (radii.length) {
+        switch (radii.size()) {
         case 1:
-            radiusX = radiusZ = Math.max(1, Double.parseDouble(radii[0]));
+            radiusX = radiusZ = Math.max(1, radii.get(0));
             break;
 
         case 2:
-            radiusX = Math.max(1, Double.parseDouble(radii[0]));
+            radiusX = Math.max(1, radii.get(0));
-            radiusZ = Math.max(1, Double.parseDouble(radii[1]));
+            radiusZ = Math.max(1, radii.get(1));
             break;
 
         default:
             player.printError("You must either specify 1 or 2 radius values.");
-            return;
+            return 0;
         }
 
         worldEdit.checkMaxRadius(radiusX);
@@ -120,58 +122,57 @@ public class GenerationCommands {
         BlockVector3 pos = session.getPlacementPosition(player);
         int affected = editSession.makeCylinder(pos, pattern, radiusX, radiusZ, height, !hollow);
         player.print(affected + " block(s) have been created.");
+        return affected;
     }
 
     @Command(
-        aliases = { "/hsphere" },
+        name = "/hsphere",
-        usage = "<block> <radius>[,<radius>,<radius>] [raised?]",
+        desc = "Generates a hollow sphere."
-        desc = "Generates a hollow sphere.",
-        help =
-            "Generates a hollow sphere.\n" +
-            "By specifying 3 radii, separated by commas,\n" +
-            "you can generate an ellipsoid. The order of the ellipsoid radii\n" +
-            "is north/south, up/down, east/west.",
-        min = 2,
-        max = 3
     )
     @CommandPermissions("worldedit.generation.sphere")
     @Logging(PLACEMENT)
-    public void hsphere(Player player, LocalSession session, EditSession editSession, Pattern pattern, String radiusString, @Optional("false") boolean raised) throws WorldEditException {
+    public int hsphere(Player player, LocalSession session, EditSession editSession,
-        sphere(player, session, editSession, pattern, radiusString, raised, true);
+                       @Arg(desc = "The pattern of blocks to generate")
+                           Pattern pattern,
+                       @Arg(desc = "The radii of the sphere. Order is N/S, U/D, E/W")
+                       @Radii(3)
+                           List<Double> radii,
+                       @Switch(name = 'r', desc = "Raise the bottom of the sphere to the placement position")
+                           boolean raised) throws WorldEditException {
+        return sphere(player, session, editSession, pattern, radii, raised, true);
     }
 
     @Command(
-        aliases = { "/sphere" },
+        name = "/sphere",
-        usage = "<block> <radius>[,<radius>,<radius>] [raised?]",
+        desc = "Generates a filled sphere."
-        flags = "h",
-        desc = "Generates a filled sphere.",
-        help =
-            "Generates a filled sphere.\n" +
-            "By specifying 3 radii, separated by commas,\n" +
-            "you can generate an ellipsoid. The order of the ellipsoid radii\n" +
-            "is north/south, up/down, east/west.",
-        min = 2,
-        max = 3
     )
     @CommandPermissions("worldedit.generation.sphere")
     @Logging(PLACEMENT)
-    public void sphere(Player player, LocalSession session, EditSession editSession, Pattern pattern, String radiusString, @Optional("false") boolean raised, @Switch('h') boolean hollow) throws WorldEditException {
+    public int sphere(Player player, LocalSession session, EditSession editSession,
-        String[] radii = radiusString.split(",");
+                      @Arg(desc = "The pattern of blocks to generate")
+                          Pattern pattern,
+                      @Arg(desc = "The radii of the sphere. Order is N/S, U/D, E/W")
+                      @Radii(3)
+                          List<Double> radii,
+                      @Switch(name = 'r', desc = "Raise the bottom of the sphere to the placement position")
+                          boolean raised,
+                      @Switch(name = 'h', desc = "Make a hollow sphere")
+                          boolean hollow) throws WorldEditException {
         final double radiusX, radiusY, radiusZ;
-        switch (radii.length) {
+        switch (radii.size()) {
         case 1:
-            radiusX = radiusY = radiusZ = Math.max(1, Double.parseDouble(radii[0]));
+            radiusX = radiusY = radiusZ = Math.max(1, radii.get(0));
             break;
 
         case 3:
-            radiusX = Math.max(1, Double.parseDouble(radii[0]));
+            radiusX = Math.max(1, radii.get(0));
-            radiusY = Math.max(1, Double.parseDouble(radii[1]));
+            radiusY = Math.max(1, radii.get(1));
-            radiusZ = Math.max(1, Double.parseDouble(radii[2]));
+            radiusZ = Math.max(1, radii.get(2));
             break;
 
         default:
             player.printError("You must either specify 1 or 3 radius values.");
-            return;
+            return 0;
         }
 
         worldEdit.checkMaxRadius(radiusX);
@@ -186,98 +187,102 @@ public class GenerationCommands {
         int affected = editSession.makeSphere(pos, pattern, radiusX, radiusY, radiusZ, !hollow);
         player.findFreePosition();
         player.print(affected + " block(s) have been created.");
+        return affected;
     }
 
     @Command(
-        aliases = { "forestgen" },
+        name = "forestgen",
-        usage = "[size] [type] [density]",
+        desc = "Generate a forest"
-        desc = "Generate a forest",
-        min = 0,
-        max = 3
     )
     @CommandPermissions("worldedit.generation.forest")
     @Logging(POSITION)
-    public void forestGen(Player player, LocalSession session, EditSession editSession, @Optional("10") int size,
+    public int forestGen(Player player, LocalSession session, EditSession editSession,
-                          @Optional("tree") TreeType type, @Optional("5") @Range(min = 0, max = 100) double density) throws WorldEditException {
+                         @Arg(desc = "The size of the forest, in blocks", def = "10")
+                             int size,
+                         @Arg(desc = "The type of forest", def = "tree")
+                             TreeType type,
+                         @Arg(desc = "The density of the forest, between 0 and 100", def = "5")
+                             double density) throws WorldEditException {
+        if (density < 0 || density > 100) {
+            throw new IllegalArgumentException("Density must be between 0 and 100");
+        }
         density = density / 100;
         int affected = editSession.makeForest(session.getPlacementPosition(player), size, density, type);
         player.print(affected + " trees created.");
+        return affected;
     }
 
     @Command(
-        aliases = { "pumpkins" },
+        name = "pumpkins",
-        usage = "[size]",
+        desc = "Generate pumpkin patches"
-        desc = "Generate pumpkin patches",
-        min = 0,
-        max = 1
     )
     @CommandPermissions("worldedit.generation.pumpkins")
     @Logging(POSITION)
-    public void pumpkins(Player player, LocalSession session, EditSession editSession, @Optional("10") int apothem) throws WorldEditException {
+    public int pumpkins(Player player, LocalSession session, EditSession editSession,
-        int affected = editSession.makePumpkinPatches(session.getPlacementPosition(player), apothem);
+                        @Arg(desc = "The size of the patch", def = "10")
+                            int size) throws WorldEditException {
+        int affected = editSession.makePumpkinPatches(session.getPlacementPosition(player), size);
         player.print(affected + " pumpkin patches created.");
+        return affected;
     }
 
     @Command(
-            aliases = { "/hpyramid" },
+            name = "/hpyramid",
-            usage = "<block> <size>",
+            desc = "Generate a hollow pyramid"
-            desc = "Generate a hollow pyramid",
-            min = 2,
-            max = 2
     )
     @CommandPermissions("worldedit.generation.pyramid")
     @Logging(PLACEMENT)
-    public void hollowPyramid(Player player, LocalSession session, EditSession editSession, Pattern pattern, @Range(min = 1) int size) throws WorldEditException {
+    public int hollowPyramid(Player player, LocalSession session, EditSession editSession,
-        pyramid(player, session, editSession, pattern, size, true);
+                             @Arg(desc = "The pattern of blocks to set")
+                                 Pattern pattern,
+                             @Arg(desc = "The size of the pyramid")
+                                 int size) throws WorldEditException {
+        return pyramid(player, session, editSession, pattern, size, true);
     }
 
     @Command(
-        aliases = { "/pyramid" },
+        name = "/pyramid",
-        usage = "<block> <size>",
+        desc = "Generate a filled pyramid"
-        flags = "h",
-        desc = "Generate a filled pyramid",
-        min = 2,
-        max = 2
     )
     @CommandPermissions("worldedit.generation.pyramid")
     @Logging(PLACEMENT)
-    public void pyramid(Player player, LocalSession session, EditSession editSession, Pattern pattern, @Range(min = 1) int size, @Switch('h') boolean hollow) throws WorldEditException {
+    public int pyramid(Player player, LocalSession session, EditSession editSession,
+                       @Arg(desc = "The pattern of blocks to set")
+                           Pattern pattern,
+                       @Arg(desc = "The size of the pyramid")
+                           int size,
+                       @Switch(name = 'h', desc = "Make a hollow pyramid")
+                           boolean hollow) throws WorldEditException {
         BlockVector3 pos = session.getPlacementPosition(player);
         worldEdit.checkMaxRadius(size);
         int affected = editSession.makePyramid(pos, pattern, size, !hollow);
         player.findFreePosition();
         player.print(affected + " block(s) have been created.");
+        return affected;
     }
 
     @Command(
-        aliases = { "/generate", "/gen", "/g" },
+        name = "/generate",
-        usage = "<block> <expression>",
+        aliases = { "/gen", "/g" },
         desc = "Generates a shape according to a formula.",
-        help =
+        descFooter = "See also https://tinyurl.com/wesyntax."
-            "Generates a shape according to a formula that is expected to\n" +
-            "return positive numbers (true) if the point is inside the shape\n" +
-            "Optionally set type/data to the desired block.\n" +
-            "Flags:\n" +
-            "  -h to generate a hollow shape\n" +
-            "  -r to use raw minecraft coordinates\n" +
-            "  -o is like -r, except offset from placement.\n" +
-            "  -c is like -r, except offset selection center.\n" +
-            "If neither -r nor -o is given, the selection is mapped to -1..1\n" +
-            "See also tinyurl.com/wesyntax.",
-        flags = "hroc",
-        min = 2,
-        max = -1
     )
     @CommandPermissions("worldedit.generation.shape")
     @Logging(ALL)
-    public void generate(Player player, LocalSession session, EditSession editSession,
+    public int generate(Player player, LocalSession session, EditSession editSession,
-                         @Selection Region region,
+                        @Selection Region region,
-                         Pattern pattern,
+                        @Arg(desc = "The pattern of blocks to set")
-                         @Text String expression,
+                            Pattern pattern,
-                         @Switch('h') boolean hollow,
+                        @Arg(desc = "Expression to test block placement locations and set block type")
-                         @Switch('r') boolean useRawCoords,
+                            String expression,
-                         @Switch('o') boolean offset,
+                        @Switch(name = 'h', desc = "Generate a hollow shape")
-                         @Switch('c') boolean offsetCenter) throws WorldEditException {
+                            boolean hollow,
+                        @Switch(name = 'r', desc = "Use the game's coordinate origin")
+                            boolean useRawCoords,
+                        @Switch(name = 'o', desc = "Use the placement's coordinate origin")
+                            boolean offset,
+                        @Switch(name = 'c', desc = "Use the selection's center as origin")
+                            boolean offsetCenter) throws WorldEditException {
 
         final Vector3 zero;
         Vector3 unit;
@@ -310,40 +315,35 @@ public class GenerationCommands {
             final int affected = editSession.makeShape(region, zero, unit, pattern, expression, hollow, session.getTimeout());
             player.findFreePosition();
             player.print(affected + " block(s) have been created.");
+            return affected;
         } catch (ExpressionException e) {
             player.printError(e.getMessage());
+            return 0;
         }
     }
 
     @Command(
-        aliases = { "/generatebiome", "/genbiome", "/gb" },
+        name = "/generatebiome",
-        usage = "<biome> <expression>",
+        aliases = { "/genbiome", "/gb" },
         desc = "Sets biome according to a formula.",
-        help =
+        descFooter = "See also https://tinyurl.com/wesyntax."
-            "Generates a shape according to a formula that is expected to\n" +
-            "return positive numbers (true) if the point is inside the shape\n" +
-            "Sets the biome of blocks in that shape.\n" +
-            "Flags:\n" +
-            "  -h to generate a hollow shape\n" +
-            "  -r to use raw minecraft coordinates\n" +
-            "  -o is like -r, except offset from placement.\n" +
-            "  -c is like -r, except offset selection center.\n" +
-            "If neither -r nor -o is given, the selection is mapped to -1..1\n" +
-            "See also tinyurl.com/wesyntax.",
-        flags = "hroc",
-        min = 2,
-        max = -1
     )
     @CommandPermissions("worldedit.generation.shape.biome")
     @Logging(ALL)
-    public void generateBiome(Player player, LocalSession session, EditSession editSession,
+    public int generateBiome(Player player, LocalSession session, EditSession editSession,
-                              @Selection Region region,
+                             @Selection Region region,
-                              BiomeType target,
+                             @Arg(desc = "The biome type to set")
-                              @Text String expression,
+                                 BiomeType target,
-                              @Switch('h') boolean hollow,
+                             @Arg(desc = "Expression to test block placement locations and set biome type")
-                              @Switch('r') boolean useRawCoords,
+                                 String expression,
-                              @Switch('o') boolean offset,
+                             @Switch(name = 'h', desc = "Generate a hollow shape")
-                              @Switch('c') boolean offsetCenter) throws WorldEditException {
+                                 boolean hollow,
+                             @Switch(name = 'r', desc = "Use the game's coordinate origin")
+                                 boolean useRawCoords,
+                             @Switch(name = 'o', desc = "Use the placement's coordinate origin")
+                                 boolean offset,
+                             @Switch(name = 'c', desc = "Use the selection's center as origin")
+                                 boolean offsetCenter) throws WorldEditException {
         final Vector3 zero;
         Vector3 unit;
 
@@ -375,8 +375,10 @@ public class GenerationCommands {
             final int affected = editSession.makeBiomeShape(region, zero, unit, target, expression, hollow, session.getTimeout());
             player.findFreePosition();
             player.print("" + affected + " columns affected.");
+            return affected;
         } catch (ExpressionException e) {
             player.printError(e.getMessage());
+            return 0;
         }
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/command/argument/CommaSeparatedValuesConverter.java

@@ -0,0 +1,68 @@
+package com.sk89q.worldedit.command.argument;
+
+import com.google.common.base.Splitter;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Iterables;
+import org.enginehub.piston.converter.ArgumentConverter;
+import org.enginehub.piston.converter.ConversionResult;
+import org.enginehub.piston.converter.SuccessfulConversion;
+import org.enginehub.piston.inject.InjectedValueAccess;
+
+import java.util.List;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+public class CommaSeparatedValuesConverter<T> implements ArgumentConverter<T> {
+
+    public static <T> CommaSeparatedValuesConverter<T> wrap(ArgumentConverter<T> delegate) {
+        return wrapAndLimit(delegate, -1);
+    }
+
+    public static <T> CommaSeparatedValuesConverter<T> wrapAndLimit(ArgumentConverter<T> delegate, int maximum) {
+        return new CommaSeparatedValuesConverter<>(delegate, maximum);
+    }
+
+    private static final Splitter COMMA = Splitter.on(',');
+
+    private final ArgumentConverter<T> delegate;
+    private final int maximum;
+
+    private CommaSeparatedValuesConverter(ArgumentConverter<T> delegate, int maximum) {
+        checkArgument(maximum == -1 || maximum > 1,
+            "Maximum must be bigger than 1, or exactly -1");
+        this.delegate = delegate;
+        this.maximum = maximum;
+    }
+
+    @Override
+    public String describeAcceptableArguments() {
+        StringBuilder result = new StringBuilder();
+        if (maximum > -1) {
+            result.append("up to ").append(maximum).append(' ');
+        }
+        result.append("comma separated values of ")
+            .append(delegate.describeAcceptableArguments());
+        result.setCharAt(0, Character.toUpperCase(result.charAt(0)));
+        return result.toString();
+    }
+
+    @Override
+    public List<String> getSuggestions(String input) {
+        String lastInput = Iterables.getLast(COMMA.split(input));
+        return delegate.getSuggestions(lastInput);
+    }
+
+    @Override
+    public ConversionResult<T> convert(String argument, InjectedValueAccess context) {
+        ImmutableList.Builder<T> result = ImmutableList.builder();
+        for (String input : COMMA.split(argument)) {
+            ConversionResult<T> temp = delegate.convert(input, context);
+            if (!temp.isSuccessful()) {
+                return temp;
+            }
+            result.addAll(temp.get());
+        }
+        return SuccessfulConversion.from(result.build());
+    }
+
+}

worldedit-core/src/main/java/com/sk89q/worldedit/command/argument/PatternConverter.java

@@ -19,8 +19,6 @@
 
 package com.sk89q.worldedit.command.argument;
 
-import com.sk89q.minecraft.util.commands.CommandException;
-import com.sk89q.minecraft.util.commands.CommandLocals;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.Entity;
@@ -29,23 +27,30 @@ import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.Extent;
 import com.sk89q.worldedit.function.pattern.Pattern;
-import com.sk89q.worldedit.util.command.argument.CommandArgs;
-import com.sk89q.worldedit.util.command.composition.SimpleCommand;
 import com.sk89q.worldedit.world.World;
+import org.enginehub.piston.CommandManager;
+import org.enginehub.piston.converter.ArgumentConverter;
+import org.enginehub.piston.converter.ConversionResult;
+import org.enginehub.piston.converter.SuccessfulConversion;
+import org.enginehub.piston.inject.InjectedValueAccess;
+import org.enginehub.piston.inject.Key;
 
-public class PatternParser extends SimpleCommand<Pattern> {
+public class PatternConverter implements ArgumentConverter<Pattern> {
 
-    private final StringParser stringParser;
+    public static void register(WorldEdit worldEdit, CommandManager commandManager) {
+        commandManager.registerConverter(Key.of(Pattern.class), new PatternConverter(worldEdit));
+    }
 
-    public PatternParser(String name) {
+    private final WorldEdit worldEdit;
-        stringParser = addParameter(new StringParser(name, "The pattern"));
+
+    private PatternConverter(WorldEdit worldEdit) {
+        this.worldEdit = worldEdit;
     }
 
     @Override
-    public Pattern call(CommandArgs args, CommandLocals locals) throws CommandException {
+    public ConversionResult<Pattern> convert(String argument, InjectedValueAccess context) {
-        String patternString = stringParser.call(args, locals);
+        Actor actor = context.injectedValue(Key.of(Actor.class))
-
+            .orElseThrow(() -> new IllegalStateException("No actor"));
-        Actor actor = locals.get(Actor.class);
         LocalSession session = WorldEdit.getInstance().getSessionManager().get(actor);
 
         ParserContext parserContext = new ParserContext();
@@ -59,20 +64,16 @@ public class PatternParser extends SimpleCommand<Pattern> {
         parserContext.setSession(session);
 
         try {
-            return WorldEdit.getInstance().getPatternFactory().parseFromInput(patternString, parserContext);
+            return SuccessfulConversion.fromSingle(
+                worldEdit.getPatternFactory().parseFromInput(argument, parserContext)
+            );
         } catch (InputParseException e) {
-            throw new CommandException(e.getMessage(), e);
+            throw new IllegalArgumentException(e);
         }
     }
 
     @Override
-    public String getDescription() {
+    public String describeAcceptableArguments() {
-        return "Choose a pattern";
+        return "any pattern";
     }
-
-    @Override
-    public boolean testPermission0(CommandLocals locals) {
-        return true;
-    }
-
 }

worldedit-core/src/main/java/com/sk89q/worldedit/command/argument/ReplaceParser.java

@@ -35,12 +35,14 @@ import com.sk89q.worldedit.util.command.composition.SimpleCommand;
 
 public class ReplaceParser extends SimpleCommand<Contextual<? extends RegionFunction>> {
 
-    private final PatternParser fillArg = addParameter(new PatternParser("fillPattern"));
+    // TODO rewrite for new system
+//    private final PatternParser fillArg = addParameter(new PatternParser("fillPattern"));
 
     @Override
     public Contextual<RegionFunction> call(CommandArgs args, CommandLocals locals) throws CommandException {
-        Pattern fill = fillArg.call(args, locals);
+//        Pattern fill = fillArg.call(args, locals);
-        return new ReplaceFactory(fill);
+//        return new ReplaceFactory(fill);
+        return null;
     }
 
     @Override

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

@@ -0,0 +1,16 @@
+package com.sk89q.worldedit.extension.platform;
+
+import com.google.auto.value.AutoAnnotation;
+import com.sk89q.worldedit.internal.annotation.Radii;
+
+/**
+ * Holder for generated annotation classes.
+ */
+class Annotations {
+
+    @AutoAnnotation
+    static Radii radii(int value) {
+        return new AutoAnnotation_Annotations_radii(value);
+    }
+
+}

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

@@ -20,6 +20,7 @@
 package com.sk89q.worldedit.extension.platform;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.reflect.TypeToken;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.LocalConfiguration;
@@ -35,11 +36,15 @@ import com.sk89q.worldedit.command.ClipboardCommands;
 import com.sk89q.worldedit.command.ClipboardCommandsRegistration;
 import com.sk89q.worldedit.command.GeneralCommands;
 import com.sk89q.worldedit.command.GeneralCommandsRegistration;
+import com.sk89q.worldedit.command.GenerationCommands;
+import com.sk89q.worldedit.command.GenerationCommandsRegistration;
 import com.sk89q.worldedit.command.SchematicCommands;
 import com.sk89q.worldedit.command.SchematicCommandsRegistration;
 import com.sk89q.worldedit.command.argument.Arguments;
+import com.sk89q.worldedit.command.argument.CommaSeparatedValuesConverter;
 import com.sk89q.worldedit.command.argument.DirectionConverter;
 import com.sk89q.worldedit.command.argument.MaskConverter;
+import com.sk89q.worldedit.command.argument.PatternConverter;
 import com.sk89q.worldedit.command.util.CommandPermissionsConditionGenerator;
 import com.sk89q.worldedit.command.util.PermissionCondition;
 import com.sk89q.worldedit.entity.Entity;
@@ -65,6 +70,7 @@ import com.sk89q.worldedit.world.World;
 import org.enginehub.piston.Command;
 import org.enginehub.piston.CommandManager;
 import org.enginehub.piston.DefaultCommandManagerService;
+import org.enginehub.piston.converter.ArgumentConverters;
 import org.enginehub.piston.exception.CommandException;
 import org.enginehub.piston.exception.CommandExecutionException;
 import org.enginehub.piston.exception.ConditionFailedException;
@@ -171,6 +177,14 @@ public final class PlatformCommandMananger {
     private void registerArgumentConverters() {
         DirectionConverter.register(worldEdit, commandManager);
         MaskConverter.register(worldEdit, commandManager);
+        PatternConverter.register(worldEdit, commandManager);
+        for (int count = 2; count <= 3; count++) {
+            commandManager.registerConverter(Key.of(double.class, Annotations.radii(count)),
+                CommaSeparatedValuesConverter.wrapAndLimit(ArgumentConverters.get(
+                    TypeToken.of(double.class)
+                ), count)
+            );
+        }
     }
 
     private void registerAlwaysInjectedValues() {
@@ -258,13 +272,17 @@ public final class PlatformCommandMananger {
             GeneralCommandsRegistration.builder(),
             new GeneralCommands(worldEdit)
         );
+        register(
+            commandManager,
+            GenerationCommandsRegistration.builder(),
+            new GenerationCommands(worldEdit)
+        );
 
         // Unported commands are below. Delete once they're added to the main manager above.
         /*
         dispatcher = new CommandGraph()
                 .builder(builder)
                     .commands()
-                        .registerMethods(new GenerationCommands(worldEdit))
                         .registerMethods(new HistoryCommands(worldEdit))
                         .registerMethods(new NavigationCommands(worldEdit))
                         .registerMethods(new RegionCommands(worldEdit))

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

@@ -0,0 +1,40 @@
+/*
+ * 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.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 double} parameter to inject multiple radii values.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.PARAMETER)
+@InjectAnnotation
+public @interface Radii {
+    /**
+     * Number of radii values to inject at maximum. May inject less.
+     */
+    int value();
+}