[lldb-dap] Refactoring IO handling for the SBDebugger.

lldb/packages/Python/lldbsuite/test/tools/lldb-dap/dap_server.py

@@ -987,17 +987,23 @@ def request_writeMemory(self, memoryReference, data, offset=0, allowPartial=Fals
         }
         return self._send_recv(command_dict)
 
-    def request_evaluate(self, expression, frameIndex=0, threadId=None, context=None):
+    def request_evaluate(
+        self,
+        expression: str,
+        frameIndex=0,
+        threadId: Optional[int] = None,
+        context: Optional[
+            Literal["watch", "repl", "hover", "clipboard", "variables"]
+        ] = None,
+    ) -> Optional[Response]:
         stackFrame = self.get_stackFrame(frameIndex=frameIndex, threadId=threadId)
-        if stackFrame is None:
-            return []
         args_dict = {
             "expression": expression,
             "frameId": stackFrame["id"],
         }
         if context:
             args_dict["context"] = context
-        command_dict = {
+        command_dict: Request = {
             "command": "evaluate",
             "type": "request",
             "arguments": args_dict,

lldb/test/API/tools/lldb-dap/cancel/TestDAP_cancel.py

@@ -2,8 +2,6 @@
 Test lldb-dap cancel request
 """
 
-import time
-
 from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 import lldbdap_testcase

lldb/test/API/tools/lldb-dap/evaluate/TestDAP_evaluate.py

@@ -125,6 +125,7 @@ def run_test_evaluate_expressions(
         self.assertEvaluate("var1", "20", want_type="int")
         # Empty expression should equate to the previous expression.
         if context == "repl":
+            self.assertEvaluate("p var1", "20")
             self.assertEvaluate("", "20")
         else:
             self.assertEvaluateFailure("")