Add window/showMessage / logMessage stubs so gopls fully starts.

helix-lsp/src/lib.rs

@@ -123,6 +123,8 @@ pub mod util {
 #[derive(Debug, PartialEq, Clone)]
 pub enum Notification {
     PublishDiagnostics(lsp::PublishDiagnosticsParams),
+    ShowMessage(lsp::ShowMessageParams),
+    LogMessage(lsp::LogMessageParams),
 }
 
 impl Notification {
@@ -138,6 +140,19 @@ impl Notification {
                 // TODO: need to loop over diagnostics and distinguish them by URI
                 Notification::PublishDiagnostics(params)
             }
+
+            lsp::notification::ShowMessage::METHOD => {
+                let params: lsp::ShowMessageParams =
+                    params.parse().expect("Failed to parse ShowMessage params");
+
+                Notification::ShowMessage(params)
+            }
+            lsp::notification::LogMessage::METHOD => {
+                let params: lsp::LogMessageParams =
+                    params.parse().expect("Failed to parse ShowMessage params");
+
+                Notification::LogMessage(params)
+            }
             _ => unimplemented!("unhandled notification: {}", method),
         }
     }

helix-term/src/application.rs

@@ -152,6 +152,7 @@ impl Application {
         match call {
             Call::Notification(helix_lsp::jsonrpc::Notification { method, params, .. }) => {
                 let notification = Notification::parse(&method, params);
+                // TODO: parse should return Result/Option
                 match notification {
                     Notification::PublishDiagnostics(params) => {
                         let path = Some(params.uri.to_file_path().unwrap());
@@ -213,6 +214,12 @@ impl Application {
                             self.render();
                         }
                     }
+                    Notification::ShowMessage(params) => {
+                        log::warn!("unhandled window/showMessage: {:?}", params);
+                    }
+                    Notification::LogMessage(params) => {
+                        log::warn!("unhandled window/logMessage: {:?}", params);
+                    }
                     _ => unreachable!(),
                 }
             }

languages.toml

@@ -52,7 +52,7 @@ file-types = ["go"]
 roots = ["Gopkg.toml", "go.mod"]
 
 language-server = { command = "gopls" }
-# TODO: gopls needs utf-8 offsets
+# TODO: gopls needs utf-8 offsets?
 indent = { tab-width = 2, unit = "  " }
 
 [[language]]