Fix issue with permitted node after not-permitted node

Author: jpenilla

cloud-core/src/main/java/org/incendo/cloud/CommandManager.java

@@ -98,8 +98,7 @@
 @API(status = API.Status.STABLE)
 public abstract class CommandManager<C> implements Stateful<RegistrationState>, CommandBuilderSource<C> {
 
-    private final Configurable<ManagerSetting> settings = Configurable.enumConfigurable(ManagerSetting.class)
-            .set(ManagerSetting.ENFORCE_INTERMEDIARY_PERMISSIONS, true);
+    private final Configurable<ManagerSetting> settings = Configurable.enumConfigurable(ManagerSetting.class);
     private final ServicePipeline servicePipeline = ServicePipeline.builder().build();
     private final ParserRegistry<C> parserRegistry = new StandardParserRegistry<>();
     private final Collection<Command<C>> commands = new LinkedList<>();

cloud-core/src/main/java/org/incendo/cloud/CommandTree.java

@@ -1045,7 +1045,7 @@ public void verifyAndRegister() {
             }
         });
 
-        this.getLeavesRaw(this.internalTree).forEach(this::propagateRequirements);
+        this.getExecutorNodes(this.internalTree).forEach(this::propagateRequirements);
     }
 
     /**
@@ -1071,34 +1071,19 @@ private void propagateRequirements(final @NonNull CommandNode<C> leafNode) {
         if (senderType == null) {
             senderType = Object.class;
         }
-        /* All leaves must necessarily have an owning command */
-        leafNode.nodeMeta().put(CommandNode.META_KEY_PERMISSION, commandPermission);
-        leafNode.nodeMeta().put(CommandNode.META_KEY_SENDER_TYPES, new HashSet<>(Collections.singletonList(senderType)));
-        // Get chain and order it tail->head then skip the tail (leaf node)
+        // Get chain and order it tail->head
         List<CommandNode<C>> chain = this.getChain(leafNode);
         Collections.reverse(chain);
-        chain = chain.subList(1, chain.size());
-        // Go through all nodes from the tail upwards until a collision occurs
         for (final CommandNode<C> commandArgumentNode : chain) {
             final Permission existingPermission = (Permission) commandArgumentNode.nodeMeta().get(CommandNode.META_KEY_PERMISSION);
 
-            Permission permission;
+            final Permission permission;
             if (existingPermission != null) {
                 permission = Permission.anyOf(commandPermission, existingPermission);
             } else {
                 permission = commandPermission;
             }
 
-            /* Now also check if there's a command handler attached to an upper level node */
-            if (commandArgumentNode.component() != null && commandArgumentNode.command() != null) {
-                final Command<C> command = commandArgumentNode.command();
-                if (this.commandManager().settings().get(ManagerSetting.ENFORCE_INTERMEDIARY_PERMISSIONS)) {
-                    permission = command.commandPermission();
-                } else {
-                    permission = Permission.anyOf(permission, command.commandPermission());
-                }
-            }
-
             commandArgumentNode.nodeMeta().put(CommandNode.META_KEY_PERMISSION, permission);
 
             final Set<Type> senderTypes = (Set<Type>) commandArgumentNode.nodeMeta()
@@ -1190,6 +1175,19 @@ private void checkAmbiguity(final @NonNull CommandNode<C> node) throws Ambiguous
         return leaves;
     }
 
+    private @NonNull List<@NonNull CommandNode<C>> getExecutorNodes(
+            final @NonNull CommandNode<C> node
+    ) {
+        final List<CommandNode<C>> leaves = new LinkedList<>();
+        if (node.command() != null) {
+            leaves.add(node);
+        }
+        for (final CommandNode<C> child : node.children()) {
+            leaves.addAll(this.getExecutorNodes(child));
+        }
+        return leaves;
+    }
+
     /**
      * Returns all leaf nodes attached to the given {@code node} or its children.
      *

cloud-core/src/main/java/org/incendo/cloud/setting/ManagerSetting.java

@@ -33,13 +33,6 @@
  */
 @API(status = API.Status.STABLE)
 public enum ManagerSetting implements Setting {
-    /**
-     * Do not create a compound permission and do not look greedily
-     * for child permission values, if a preceding command in the tree path
-     * has a command handler attached
-     */
-    ENFORCE_INTERMEDIARY_PERMISSIONS,
-
     /**
      * Force sending of an empty suggestion (i.e. a singleton list containing an empty string)
      * when no suggestions are present
@@ -52,14 +45,12 @@ public enum ManagerSetting implements Setting {
      * For example, if a platform serializes the command tree and sends it to clients,
      * this will allow modifying the command tree after it has been sent, as long as these modifications are not blocked by
      * the underlying platform
-     *
      */
     @API(status = API.Status.STABLE)
     ALLOW_UNSAFE_REGISTRATION,
 
     /**
      * Enables overriding of existing commands on supported platforms.
-     *
      */
     @API(status = API.Status.STABLE)
     OVERRIDE_EXISTING_COMMANDS,
@@ -68,7 +59,6 @@ public enum ManagerSetting implements Setting {
      * Allows parsing flags at any position after the last literal by appending flag argument nodes between each command node.
      * It can have some conflicts when integrating with other command systems like Brigadier,
      * and code inspecting the command tree may need to be adjusted.
-     *
      */
     @API(status = API.Status.EXPERIMENTAL)
     LIBERAL_FLAG_PARSING