Fix permissions further

dicore3/command/src/main/java/io/dico/dicore/command/Command.java

@@ -111,12 +111,12 @@ public abstract class Command {
         return Collections.unmodifiableList(contextFilters);
     }
 
-    public boolean removeContextFilter(IContextFilter contextFilter) {
+    public Command removeContextFilter(IContextFilter contextFilter) {
         boolean ret = contextFilters.remove(contextFilter);
         if (ret) {
             computeContextFilterPostParameterIndex();
         }
-        return ret;
+        return this;
     }
 
     private void computeContextFilterPostParameterIndex() {

dicore3/command/src/main/java/io/dico/dicore/command/ExtendedCommand.java

@@ -2,10 +2,11 @@ package io.dico.dicore.command;
 
 import io.dico.dicore.command.parameter.IArgumentPreProcessor;
 import io.dico.dicore.command.parameter.Parameter;
+import io.dico.dicore.command.parameter.type.ParameterType;
 
 @SuppressWarnings("unchecked")
 public abstract class ExtendedCommand<T extends ExtendedCommand<T>> extends Command {
-    protected final boolean modifiable;
+    protected boolean modifiable;
 
     public ExtendedCommand() {
         this(true);
@@ -24,6 +25,16 @@ public abstract class ExtendedCommand<T extends ExtendedCommand<T>> extends Comm
         return modifiable ? (T) super.addParameter(parameter) : newModifiableInstance().addParameter(parameter);
     }
 
+    @Override
+    public T addContextFilter(IContextFilter contextFilter) {
+        return modifiable ? (T) super.addContextFilter(contextFilter) : newModifiableInstance().addContextFilter(contextFilter);
+    }
+
+    @Override
+    public T removeContextFilter(IContextFilter contextFilter) {
+        return modifiable ? (T) super.removeContextFilter(contextFilter) : newModifiableInstance().removeContextFilter(contextFilter);
+    }
+
     @Override
     public T requiredParameters(int requiredParameters) {
         return modifiable ? (T) super.requiredParameters(requiredParameters) : newModifiableInstance().requiredParameters(requiredParameters);

dicore3/command/src/main/java/io/dico/dicore/command/InheritingContextFilter.java

@@ -7,7 +7,7 @@ public abstract class InheritingContextFilter implements IContextFilter {
 
     private static String[] addParent(String[] path, String parent) {
         String[] out = new String[path.length + 1];
-        System.arraycopy(path, 0, out, 0, path.length);
+        System.arraycopy(path, 0, out, 1, path.length);
         out[0] = parent;
         return out;
     }

dicore3/command/src/main/java/io/dico/dicore/command/PermissionContextFilter.java

@@ -52,7 +52,7 @@ public class PermissionContextFilter implements IContextFilter {
         doFilter(context, permission);
     }
 
-    private String getInheritedPermission(String[] components) {
+    public String getInheritedPermission(String[] components) {
         int insertedAmount = components.length;
         String[] currentComponents = permissionComponents;
         int currentAmount = currentComponents.length;
@@ -80,7 +80,7 @@ public class PermissionContextFilter implements IContextFilter {
 
     @Override
     public void filterSubContext(ExecutionContext subContext, String... path) throws CommandException {
-        if (permissionComponents != null) {
+        if (isInheritable()) {
             doFilter(subContext, getInheritedPermission(path));
         }
     }
@@ -90,4 +90,20 @@ public class PermissionContextFilter implements IContextFilter {
         return Priority.PERMISSION;
     }
 
+    public boolean isInheritable() {
+        return permissionComponents != null;
+    }
+
+    public String getPermission() {
+        return permission;
+    }
+
+    public int getComponentInsertionIndex() {
+        return componentInsertionIndex;
+    }
+
+    public String getFailMessage() {
+        return failMessage;
+    }
+
 }

dicore3/command/src/main/java/io/dico/dicore/command/predef/DefaultGroupCommand.java

@@ -1,22 +1,29 @@
 package io.dico.dicore.command.predef;
 
-import io.dico.dicore.command.Command;
 import io.dico.dicore.command.CommandException;
 import io.dico.dicore.command.ExecutionContext;
+import io.dico.dicore.command.IContextFilter;
 import org.bukkit.command.CommandSender;
 
-public class DefaultGroupCommand extends Command {
+public class DefaultGroupCommand extends PredefinedCommand<DefaultGroupCommand> {
-    private static final DefaultGroupCommand instance = new DefaultGroupCommand();
+    private static final DefaultGroupCommand instance = new DefaultGroupCommand(false);
 
     public static DefaultGroupCommand getInstance() {
         return instance;
     }
 
-    private DefaultGroupCommand() {
+    private DefaultGroupCommand(boolean modifiable) {
-
+        addContextFilter(IContextFilter.INHERIT_PERMISSIONS);
+        this.modifiable = modifiable;
     }
 
-    @Override public String execute(CommandSender sender, ExecutionContext context) throws CommandException {
+    @Override
+    protected DefaultGroupCommand newModifiableInstance() {
+        return new DefaultGroupCommand(true);
+    }
+
+    @Override
+    public String execute(CommandSender sender, ExecutionContext context) throws CommandException {
         context.getAddress().getChatController().sendHelpMessage(sender, context, context.getAddress(), 1);
         return null;
     }

dicore3/command/src/main/java/io/dico/dicore/command/predef/PredefinedCommand.java

@@ -37,6 +37,7 @@ public abstract class PredefinedCommand<T extends PredefinedCommand<T>> extends
 
     static {
         registerPredefinedCommandGenerator("help", HelpCommand::registerAsChild);
+        //noinspection StaticInitializerReferencesSubClass
         registerPredefinedCommandGenerator("syntax", SyntaxCommand::registerAsChild);
     }
 

src/main/kotlin/io/dico/parcels2/command/CommandsDebug.kt

@@ -1,10 +1,10 @@
 package io.dico.parcels2.command
 
-import io.dico.dicore.command.CommandException
+import io.dico.dicore.command.*
-import io.dico.dicore.command.EMessageType
+import io.dico.dicore.command.IContextFilter.Priority.*
-import io.dico.dicore.command.ExecutionContext
-import io.dico.dicore.command.Validate
 import io.dico.dicore.command.annotation.Cmd
+import io.dico.dicore.command.annotation.PreprocessArgs
+import io.dico.dicore.command.parameter.ArgumentBuffer
 import io.dico.parcels2.ParcelsPlugin
 import io.dico.parcels2.Privilege
 import io.dico.parcels2.blockvisitor.RegionTraverser
@@ -95,4 +95,44 @@ class CommandsDebug(plugin: ParcelsPlugin) : AbstractParcelCommands(plugin) {
         return target.hasPermission(permission).toString()
     }
 
+    @Cmd("message")
+    @PreprocessArgs
+    fun cmdMessage(sender: CommandSender, message: String): Any? {
+        sender.sendMessage(message)
+        return null
+    }
+
+    @Cmd("permissions")
+    fun cmdPermissions(context: ExecutionContext, vararg address: String): Any? {
+        val target = context.address.dispatcherForTree.getDeepChild(ArgumentBuffer(address))
+        Validate.isTrue(target.depth == address.size && target.hasCommand(), "Not found: /${address.joinToString(separator = " ")}")
+
+        val permissions = getPermissionsOf(target)
+        return permissions.joinToString(separator = "\n")
+    }
+
+    private fun getPermissionsOf(address: ICommandAddress,
+                                         path: Array<String> = emptyArray(),
+                                         result: MutableList<String> = mutableListOf()): List<String> {
+        val command = address.command ?: return result
+
+        var inherited = false
+        for (filter in command.contextFilters) {
+            when (filter) {
+                is PermissionContextFilter -> {
+                    if (path.isEmpty()) result.add(filter.permission)
+                    else if (filter.isInheritable) result.add(filter.getInheritedPermission(path))
+                }
+                is InheritingContextFilter -> {
+                    if (filter.priority == PERMISSION && address.hasParent() && !inherited) {
+                        inherited = true
+                        getPermissionsOf(address.parent, arrayOf(address.mainKey, *path), result)
+                    }
+                }
+            }
+        }
+
+        return result
+    }
+
 }

src/main/kotlin/io/dico/parcels2/command/ParcelCommandBuilder.kt

@@ -55,13 +55,13 @@ fun getParcelCommands(plugin: ParcelsPlugin): ICommandDispatcher = CommandBuilde
     generateHelpAndSyntaxCommands(parcelsAddress)
 }.getDispatcher()
 
-inline fun CommandBuilder.group(name: String, vararg aliases: String, config: CommandBuilder.() -> Unit) {
+private inline fun CommandBuilder.group(name: String, vararg aliases: String, config: CommandBuilder.() -> Unit) {
     group(name, *aliases)
     config()
     parent()
 }
 
-inline fun CommandBuilder.group(address: ICommandAddress, name: String, vararg aliases: String, config: CommandBuilder.() -> Unit) {
+private inline fun CommandBuilder.group(address: ICommandAddress, name: String, vararg aliases: String, config: CommandBuilder.() -> Unit) {
     group(address, name, *aliases)
     config()
     parent()