更新异步step

DoRunner/BreakpointRunner.cs

@@ -1,4 +1,5 @@
 using Convention.RScript.Parser;
+using System.Collections;
 using System.Diagnostics.CodeAnalysis;
 
 namespace Convention.RScript
@@ -23,7 +24,7 @@ namespace Convention.RScript
                 else if (context.NamespaceLayer.TryGetValue(context.RuntimePointerStack.Peek(), out var exitPointer))
                 {
                     context.CurrentRuntimePointer = exitPointer;
-                    context.SentenceRunners[RScriptSentence.Mode.ExitNamespace].Run(parser, context.CurrentSentence, context);
+                    return context.SentenceRunners[RScriptSentence.Mode.ExitNamespace].Run(parser, context.CurrentSentence, context);
                 }
                 else
                 {
@@ -32,5 +33,27 @@ namespace Convention.RScript
             }
             return null;
         }
+
+        [return: MaybeNull]
+        public IEnumerator RunAsync(ExpressionParser parser, RScriptSentence sentence, RScriptContext context)
+        {
+            // 检查并跳转到当前命名空间的结束位置
+            if (parser.Evaluate<bool>(sentence.content))
+            {
+                if (context.RuntimePointerStack.Count == 0)
+                {
+                    context.CurrentRuntimePointer = context.Sentences.Length;
+                }
+                else if (context.NamespaceLayer.TryGetValue(context.RuntimePointerStack.Peek(), out var exitPointer))
+                {
+                    context.CurrentRuntimePointer = exitPointer;
+                    yield return context.SentenceRunners[RScriptSentence.Mode.ExitNamespace].RunAsync(parser, context.CurrentSentence, context);
+                }
+                else
+                {
+                    throw new RScriptRuntimeException($"No namespace to break.", context.CurrentRuntimePointer);
+                }
+            }
+        }
     }
 }