[Lldb-commits] [lldb] [lldb] Refactoring JSONTransport into an abstract RPC Message Handler and transport layer. (PR #153121)

[Pavel Labath via lldb-commits]

================
@@ -258,36 +259,53 @@ void DAP::SendJSON(const llvm::json::Value &json) {
   llvm::json::Path::Root root;
   if (!fromJSON(json, message, root)) {
     DAP_LOG_ERROR(log, root.getError(), "({1}) encoding failed: {0}",
-                  transport.GetClientName());
+                  m_client_name);
     return;
   }
   Send(message);
 }
 
 void DAP::Send(const Message &message) {
-  // FIXME: After all the requests have migrated from LegacyRequestHandler >
-  // RequestHandler<> this should be handled in RequestHandler<>::operator().
-  if (auto *resp = std::get_if<Response>(&message);
-      resp && debugger.InterruptRequested()) {
-    // Clear the interrupt request.
-    debugger.CancelInterruptRequest();
-
-    // If the debugger was interrupted, convert this response into a 'cancelled'
-    // response because we might have a partial result.
-    Response cancelled{/*request_seq=*/resp->request_seq,
-                       /*command=*/resp->command,
-                       /*success=*/false,
-                       /*message=*/eResponseMessageCancelled,
-                       /*body=*/std::nullopt};
-    if (llvm::Error err = transport.Write(cancelled))
-      DAP_LOG_ERROR(log, std::move(err), "({1}) write failed: {0}",
-                    transport.GetClientName());
+  if (const protocol::Event *event = std::get_if<protocol::Event>(&message)) {
+    if (llvm::Error err = transport.Event(*event)) {
+      DAP_LOG_ERROR(log, std::move(err), "({0}) sending event failed",
+                    m_client_name);
+      return;
+    }
     return;
   }
 
-  if (llvm::Error err = transport.Write(message))
-    DAP_LOG_ERROR(log, std::move(err), "({1}) write failed: {0}",
-                  transport.GetClientName());
+  if (const Request *req = std::get_if<Request>(&message)) {
+    if (llvm::Error err = transport.Request(*req)) {
+      DAP_LOG_ERROR(log, std::move(err), "({0}) sending request failed",
+                    m_client_name);
+      return;
+    }
----------------
labath wrote:

this returns in either case (same for all three variants)
```suggestion
    if (llvm::Error err = transport.Request(*req))
      DAP_LOG_ERROR(log, std::move(err), "({0}) sending request failed",
                    m_client_name);
```

https://github.com/llvm/llvm-project/pull/153121