Fix root command node not present in command-stack

Author: TBlueF

bluecommands-core/src/main/java/de/bluecolored/bluecommands/Command.java

@@ -63,7 +63,7 @@ public ParseResult<C, T> parse(C context, String input) {
     }
 
     public ParseResult<C, T> parse(C context, InputReader input) {
-        ParseData<C, T> stack = new ParseData<>(context, input);
+        ParseData<C, T> stack = new ParseData<>(context, input, this);
         parse(stack);
         return stack.getResult();
     }

bluecommands-core/src/main/java/de/bluecolored/bluecommands/ParseData.java

@@ -33,11 +33,12 @@ public class ParseData<C, T> {
     private final ParseResult<C, T> result;
     private final LinkedList<ParseSegment<C, T>> segments;
 
-    public ParseData(C context, InputReader input) {
+    public ParseData(C context, InputReader input, Command<C, T> initialSegment) {
         this.context = context;
         this.input = input;
         this.result = new ParseResult<>(context, input.getInput());
         this.segments = new LinkedList<>();
+        pushSegment(initialSegment);
     }
 
     public C getContext() {

bluecommands-core/src/test/java/de/bluecolored/bluecommands/BlueCommandsTest.java

@@ -61,24 +61,29 @@ public void testBasicCommand() {
         expected.put("some", null);
         expected.put("arguments", "arg2");
         assertEquals(expected, match.getArguments());
-        assertEquals(4, match.getCommandStack().size());
+        assertEquals(5, match.getCommandStack().size());
 
-        var stack1 = match.getCommandStack().get(0);
+        var stack0 = match.getCommandStack().get(0);
+        assertEquals(0, stack0.getPosition());
+        assertInstanceOf(de.bluecolored.bluecommands.Command.class, stack0.getCommand());
+        assertNull(stack0.getValue());
+
+        var stack1 = match.getCommandStack().get(1);
         assertEquals(0, stack1.getPosition());
         assertInstanceOf(LiteralCommand.class, stack1.getCommand());
         assertNull(stack1.getValue());
 
-        var stack2 = match.getCommandStack().get(1);
+        var stack2 = match.getCommandStack().get(2);
         assertEquals(5, stack2.getPosition());
         assertInstanceOf(ArgumentCommand.class, stack2.getCommand());
         assertEquals("arg1", stack2.getValue());
 
-        var stack3 = match.getCommandStack().get(2);
+        var stack3 = match.getCommandStack().get(3);
         assertEquals(10, stack3.getPosition());
         assertInstanceOf(ArgumentCommand.class, stack3.getCommand());
         assertNull(stack3.getValue());
 
-        var stack4 = match.getCommandStack().get(3);
+        var stack4 = match.getCommandStack().get(4);
         assertEquals(10, stack4.getPosition());
         assertInstanceOf(ArgumentCommand.class, stack4.getCommand());
         assertEquals("arg2", stack4.getValue());