.

src/main/java/de/kencommand/api/structure/node/LiteralNode.java

@@ -9,7 +9,7 @@ public interface LiteralNode<T, S extends CommandContext<T>> {
 
     void addLiteral(@NotNull CommandNode<? extends T, ? extends S> commandNode);
 
-    CommandNode<? extends T, ? extends S> getLiteral(@NotNull String name);
+    CommandNode<T, S> getLiteral(@NotNull String name);
 
     @NotNull Set<CommandNode<? extends T, ? extends S>> getLiterals();
 }

src/main/java/de/kencommand/impl/parsing/CommandNodeParser.java

@@ -0,0 +1,29 @@
+package de.kencommand.impl.parsing;
+
+import de.kencommand.api.processing.CommandContext;
+import de.kencommand.api.processing.CommandExecutor;
+import de.kencommand.api.structure.node.CommandNode;
+import lombok.RequiredArgsConstructor;
+
+import java.util.Arrays;
+
+@RequiredArgsConstructor
+public class CommandNodeParser<T, S extends CommandContext<T>> {
+
+    public CommandExecutor<? extends S> parse(CommandNode<T, S> commandNode, String[] args) {
+        var iter = Arrays.stream(args).iterator();
+
+        while (true) {
+            if (!iter.hasNext()) {
+                // literals/arguments are optional if the node itself is executable
+                if (commandNode.getExecutor() == null) throw new RuntimeException("no literal given but required");
+                // TODO parse arguments for executor ig, or rather do that in a separate method
+                return commandNode.getExecutor();
+            }
+
+            final var arg = iter.next();
+            // TODO rethink
+            return parse(commandNode.getLiteral(arg), args);
+        }
+    }
+}