SpigotCore_Main/src/de/steamwar/command/SWCommand.java

@@ -79,9 +79,7 @@ public abstract class SWCommand {
         if (!CommandSender.class.isAssignableFrom(parameters[0].getType())) return false;
         for (int i = 1; i < parameters.length; i++) {
             Parameter parameter = parameters[i];
-            StringConstraint stringConstraint = parameter.getAnnotation(StringConstraint.class);
             Class<?> clazz = parameter.getType();
-            if (stringConstraint != null && clazz != String.class) return false;
             if (parameter.isVarArgs() && i == parameters.length - 1) {
                 clazz = parameter.getType().getComponentType();
             }
@@ -103,12 +101,7 @@ public abstract class SWCommand {
     @Retention(RetentionPolicy.RUNTIME)
     @Target({ElementType.METHOD})
     protected @interface Register {
-    }
-
-    @Retention(RetentionPolicy.RUNTIME)
-    @Target({ElementType.PARAMETER})
-    @interface StringConstraint {
-        String constraint();
+        String[] subCommand() default {};
     }
 
 }

SpigotCore_Main/src/de/steamwar/command/SWCommandUtils.java

@@ -25,6 +25,7 @@ import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
 import java.lang.reflect.Field;
+import java.lang.reflect.Method;
 import java.lang.reflect.Parameter;
 import java.util.*;
 import java.util.function.BiFunction;
@@ -78,7 +79,7 @@ class SWCommandUtils {
         }
     }
 
-    public static Object[] generateArgumentArray(CommandSender commandSender, Parameter[] parameters, String[] args) {
+    public static Object[] generateArgumentArray(CommandSender commandSender, Method method, Parameter[] parameters, String[] args) {
         Object[] arguments = new Object[args.length + 1];
         boolean varArgs = false;
         if (parameters[parameters.length - 1].isVarArgs()) {
@@ -87,14 +88,15 @@ class SWCommandUtils {
         }
         arguments[0] = parameters[0].getType().cast(commandSender);
 
-        for (int i = 1; i < parameters.length - (varArgs ? 1 : 0); i++) {
-            Parameter parameter = parameters[i];
+        SWCommand.Register register = method.getAnnotation(SWCommand.Register.class);
+        int subCommandIndex = 1;
+        for (String s : register.subCommand()) {
+            if (!args[subCommandIndex++].equals(s)) throw new SecurityException();
+        }
+
+        for (int i = subCommandIndex; i < parameters.length - (varArgs ? 1 : 0); i++) {
             Class<?> clazz = parameters[i].getType();
             arguments[i] = mapper(clazz).apply(args[i - 1]);
-            SWCommand.StringConstraint stringConstraint = parameter.getAnnotation(SWCommand.StringConstraint.class);
-            if (stringConstraint != null && !Objects.equals(arguments[i], stringConstraint.constraint())) {
-                throw new SecurityException();
-            }
         }
 
         if (varArgs) {