Permission: add the children tags,Command: add the permissionMessage

src/main/java/cn/nukkit/permission/Permission.java

@@ -1,6 +1,7 @@
 package cn.nukkit.permission;
 
 import cn.nukkit.Server;
+import cn.nukkit.plugin.simple.Children;
 
 import java.util.*;
 
@@ -130,6 +131,28 @@ public Permission addParent(String name, boolean value) {
         return perm;
     }
 
+    public static HashMap<String,Object> parsePermission(cn.nukkit.plugin.simple.Permission[] permissions){
+        HashMap<String,Object> pers = new HashMap<>();
+        for(cn.nukkit.plugin.simple.Permission p:permissions){
+            HashMap<String,Object> pers_child = new HashMap<>();
+            pers_child.put("description",p.description());
+            pers_child.put("default",p.theDefault());
+            Children[] children = p.childeren();
+            if(children.length!=0) {
+                HashMap<String,Object> map = new HashMap<>();
+                for (Children c : children) {
+                    HashMap<String,Object> childValue = new HashMap<>();
+                    childValue.put("description",c.description());
+                    childValue.put("default",c.theDefault());
+                    map.put(c.name(),childValue);
+                }
+                pers_child.put("children",map);
+            }
+            pers.put(p.permission(),pers_child);
+        }
+        return pers;
+    }
+
     public static List<Permission> loadPermissions(Map<String, Object> data) {
         return loadPermissions(data, DEFAULT_OP);
     }

src/main/java/cn/nukkit/plugin/JavaPluginLoader.java

@@ -19,6 +19,8 @@
 import java.util.jar.JarFile;
 import java.util.regex.Pattern;
 
+import static cn.nukkit.permission.Permission.parsePermission;
+
 /**
  * Created by Nukkit Team.
  */
@@ -201,16 +203,6 @@ private PluginDescription getSimpleDescription(Class<?> plugin){
         return descript;
     }
 
-    public static HashMap<String,Object> parsePermission(Permission[] permissions){
-        HashMap<String,Object> pers = new HashMap<>();
-        for(Permission p:permissions){
-            HashMap<String,Object> pers_child = new HashMap<>();
-            pers_child.put("description",p.description());
-            pers_child.put("default",p.theDefault());
-            pers.put(p.permission(),pers_child);
-        }
-        return pers;
-    }
 
     @Override
     public Plugin loadPlugin(String filename) throws Exception {

src/main/java/cn/nukkit/plugin/PluginManager.java

@@ -474,7 +474,7 @@ protected  List<PluginCommand> parseSimplePluginCommands(Plugin plugin){
              cn.nukkit.plugin.simple.Permission permission =
                      method.getAnnotation(cn.nukkit.plugin.simple.Permission.class);
              if(cmd!=null&&permission!=null){
-                 plugin.getDescription().getPermissions().addAll(Permission.loadPermissions(JavaPluginLoader.parsePermission(new cn.nukkit.plugin.simple.Permission[] {
+                 plugin.getDescription().getPermissions().addAll(Permission.loadPermissions(Permission.parsePermission(new cn.nukkit.plugin.simple.Permission[] {
                          permission
                  })));
                  SimplePluginCommand command = new SimplePluginCommand(cmd.name(),plugin);
@@ -491,6 +491,7 @@ private void initCommand(PluginCommand newCmd,Command command){
         newCmd.setUsage(command.usage());
         newCmd.setAliases(command.aliases());
         newCmd.setPermission(command.permission());
+        newCmd.setPermissionMessage(command.permissionMessage());
     }
 
     protected List<PluginCommand> parseYamlCommands(Plugin plugin) {

src/main/java/cn/nukkit/plugin/simple/Children.java

@@ -0,0 +1,15 @@
+package cn.nukkit.plugin.simple;
+
+import cn.nukkit.permission.Permission;
+
+/**
+ * The children permission
+ */
+public @interface Children {
+
+    String name();
+
+    String description() default "";
+
+    String theDefault() default Permission.DEFAULT_PERMISSION;
+}

src/main/java/cn/nukkit/plugin/simple/Command.java

@@ -18,4 +18,6 @@
     String permission();
 
     String[] aliases() default {};
+
+    String permissionMessage() default "";
 }

src/main/java/cn/nukkit/plugin/simple/Permission.java

@@ -13,6 +13,7 @@
 
     String description() default "";
 
-    String theDefault();
+    String theDefault() default cn.nukkit.permission.Permission.DEFAULT_PERMISSION;
 
+    Children[] childeren() default {};
 }