5 files changed, 84 insertions, 45 deletions

diff --git a/crates/ra_lsp_server/src/init.rs b/crates/ra_lsp_server/src/init.rs
new file mode 100644
index 000000000..0b7a47a0b
--- /dev/null
+++ b/crates/ra_lsp_server/src/init.rs
@@ -0,0 +1,39 @@
+use serde::{Deserialize, Deserializer};

+

+/// Client provided initialization options

+#[derive(Deserialize, Clone, Copy, Debug)]

+#[serde(rename_all = "camelCase")]

+pub struct InitializationOptions {

+    /// Whether the client supports our custom highlighting publishing decorations.

+    /// This is different to the highlightingOn setting, which is whether the user

+    /// wants our custom highlighting to be used.

+    ///

+    /// Defaults to `true`

+    #[serde(default = "bool_true", deserialize_with = "nullable_bool_true")]

+    pub publish_decorations: bool,

+

+    /// Whether or not the workspace loaded notification should be sent

+    ///

+    /// Defaults to `true`

+    #[serde(default = "bool_true", deserialize_with = "nullable_bool_true")]

+    pub show_workspace_loaded: bool,

+}

+

+impl Default for InitializationOptions {

+    fn default() -> InitializationOptions {

+        InitializationOptions { publish_decorations: true, show_workspace_loaded: true }

+    }

+}

+

+fn bool_true() -> bool {

+    true

+}

+

+/// Deserializes a null value to a bool true by default

+fn nullable_bool_true<'de, D>(deserializer: D) -> Result<bool, D::Error>

+where

+    D: Deserializer<'de>,

+{

+    let opt = Option::deserialize(deserializer)?;

+    Ok(opt.unwrap_or(true))

+}

diff --git a/crates/ra_lsp_server/src/lib.rs b/crates/ra_lsp_server/src/lib.rs
index 5b5f3b948..59e16a47c 100644
--- a/crates/ra_lsp_server/src/lib.rs
+++ b/crates/ra_lsp_server/src/lib.rs
@@ -5,7 +5,8 @@ mod main_loop;
 mod markdown;
 mod project_model;
 pub mod req;
+pub mod init;
 mod server_world;
 
 pub type Result<T> = ::std::result::Result<T, ::failure::Error>;
-pub use crate::{caps::server_capabilities, main_loop::main_loop, main_loop::LspError};
+pub use crate::{caps::server_capabilities, main_loop::main_loop, main_loop::LspError, init::InitializationOptions};
diff --git a/crates/ra_lsp_server/src/main.rs b/crates/ra_lsp_server/src/main.rs
index 03f83c7be..5a2905207 100644
--- a/crates/ra_lsp_server/src/main.rs
+++ b/crates/ra_lsp_server/src/main.rs
@@ -2,7 +2,7 @@ use serde::Deserialize;
 use flexi_logger::{Duplicate, Logger};
 use gen_lsp_server::{run_server, stdio_transport};
 
-use ra_lsp_server::Result;
+use ra_lsp_server::{Result, InitializationOptions};
 
 fn main() -> Result<()> {
     ::std::env::set_var("RUST_BACKTRACE", "short");
@@ -24,26 +24,18 @@ fn main() -> Result<()> {
     }
 }
 
-#[derive(Deserialize)]
-#[serde(rename_all = "camelCase")]
-struct InitializationOptions {
-    // Whether the client supports our custom highlighting publishing decorations.
-    // This is different to the highlightingOn setting, which is whether the user
-    // wants our custom highlighting to be used.
-    publish_decorations: Option<bool>,
-}
-
 fn main_inner() -> Result<()> {
     let (receiver, sender, threads) = stdio_transport();
     let cwd = ::std::env::current_dir()?;
     run_server(ra_lsp_server::server_capabilities(), receiver, sender, |params, r, s| {
         let root = params.root_uri.and_then(|it| it.to_file_path().ok()).unwrap_or(cwd);
-        let supports_decorations = params
+
+        let opts = params
             .initialization_options
             .and_then(|v| InitializationOptions::deserialize(v).ok())
-            .and_then(|it| it.publish_decorations)
-            == Some(true);
-        ra_lsp_server::main_loop(false, root, supports_decorations, r, s)
+            .unwrap_or(InitializationOptions::default());
+
+        ra_lsp_server::main_loop(root, opts, r, s)
     })?;
     log::info!("shutting down IO...");
     threads.join()?;
diff --git a/crates/ra_lsp_server/src/main_loop.rs b/crates/ra_lsp_server/src/main_loop.rs
index ce50fb301..d0c2a95ef 100644
--- a/crates/ra_lsp_server/src/main_loop.rs
+++ b/crates/ra_lsp_server/src/main_loop.rs
@@ -22,6 +22,7 @@ use crate::{
     req,
     server_world::{ServerWorld, ServerWorldState},
     Result,
+    InitializationOptions,
 };
 
 #[derive(Debug, Fail)]
@@ -46,9 +47,8 @@ enum Task {
 const THREADPOOL_SIZE: usize = 8;
 
 pub fn main_loop(
-    internal_mode: bool,
     ws_root: PathBuf,
-    supports_decorations: bool,
+    options: InitializationOptions,
     msg_receiver: &Receiver<RawMessage>,
     msg_sender: &Sender<RawMessage>,
 ) -> Result<()> {
@@ -63,6 +63,12 @@ pub fn main_loop(
             Ok(ws) => vec![ws],
             Err(e) => {
                 log::error!("loading workspace failed: {}", e);
+
+                show_message(
+                    req::MessageType::Error,
+                    format!("rust-analyzer failed to load workspace: {}", e),
+                    msg_sender,
+                );
                 Vec::new()
             }
         }
@@ -75,8 +81,7 @@ pub fn main_loop(
     let mut pending_requests = FxHashSet::default();
     let mut subs = Subscriptions::new();
     let main_res = main_loop_inner(
-        internal_mode,
-        supports_decorations,
+        options,
         &pool,
         msg_sender,
         msg_receiver,
@@ -143,8 +148,7 @@ impl fmt::Debug for Event {
 }
 
 fn main_loop_inner(
-    internal_mode: bool,
-    supports_decorations: bool,
+    options: InitializationOptions,
     pool: &ThreadPool,
     msg_sender: &Sender<RawMessage>,
     msg_receiver: &Receiver<RawMessage>,
@@ -158,6 +162,7 @@ fn main_loop_inner(
     // time to always have a thread ready to react to input.
     let mut in_flight_libraries = 0;
     let mut pending_libraries = Vec::new();
+    let mut send_workspace_notification = true;
 
     let (libdata_sender, libdata_receiver) = unbounded();
     loop {
@@ -185,7 +190,6 @@ fn main_loop_inner(
                 state_changed = true;
             }
             Event::Lib(lib) => {
-                feedback(internal_mode, "library loaded", msg_sender);
                 state.add_lib(lib);
                 in_flight_libraries -= 1;
             }
@@ -199,7 +203,7 @@ fn main_loop_inner(
                         Ok((id, ())) => {
                             state.collect_garbage();
                             let resp = RawResponse::ok::<req::CollectGarbage>(id, &());
-                            msg_sender.send(RawMessage::Response(resp)).unwrap()
+                            msg_sender.send(resp.into()).unwrap()
                         }
                         Err(req) => {
                             match on_request(state, pending_requests, pool, &task_sender, req)? {
@@ -211,7 +215,7 @@ fn main_loop_inner(
                                         ErrorCode::MethodNotFound as i32,
                                         "unknown request".to_string(),
                                     );
-                                    msg_sender.send(RawMessage::Response(resp)).unwrap()
+                                    msg_sender.send(resp.into()).unwrap()
                                 }
                             }
                         }
@@ -239,15 +243,23 @@ fn main_loop_inner(
             });
         }
 
-        if state.roots_to_scan == 0 && pending_libraries.is_empty() && in_flight_libraries == 0 {
-            feedback(internal_mode, "workspace loaded", msg_sender);
+        if send_workspace_notification
+            && state.roots_to_scan == 0
+            && pending_libraries.is_empty()
+            && in_flight_libraries == 0
+        {
+            if options.show_workspace_loaded {
+                show_message(req::MessageType::Info, "workspace loaded", msg_sender);
+            }
+            // Only send the notification first time
+            send_workspace_notification = false;
         }
 
         if state_changed {
             update_file_notifications_on_threadpool(
                 pool,
                 state.snapshot(),
-                supports_decorations,
+                options.publish_decorations,
                 task_sender.clone(),
                 subs.subscriptions(),
             )
@@ -260,11 +272,11 @@ fn on_task(task: Task, msg_sender: &Sender<RawMessage>, pending_requests: &mut F
     match task {
         Task::Respond(response) => {
             if pending_requests.remove(&response.id) {
-                msg_sender.send(RawMessage::Response(response)).unwrap();
+                msg_sender.send(response.into()).unwrap();
             }
         }
         Task::Notify(n) => {
-            msg_sender.send(RawMessage::Notification(n)).unwrap();
+            msg_sender.send(n.into()).unwrap();
         }
     }
 }
@@ -336,7 +348,7 @@ fn on_notification(
                     ErrorCode::RequestCanceled as i32,
                     "canceled by client".to_string(),
                 );
-                msg_sender.send(RawMessage::Response(response)).unwrap()
+                msg_sender.send(response.into()).unwrap()
             }
             return Ok(());
         }
@@ -375,7 +387,7 @@ fn on_notification(
             }
             let params = req::PublishDiagnosticsParams { uri, diagnostics: Vec::new() };
             let not = RawNotification::new::<req::PublishDiagnostics>(&params);
-            msg_sender.send(RawMessage::Notification(not)).unwrap();
+            msg_sender.send(not.into()).unwrap();
             return Ok(());
         }
         Err(not) => not,
@@ -496,12 +508,13 @@ fn update_file_notifications_on_threadpool(
     });
 }
 
-fn feedback(intrnal_mode: bool, msg: &str, sender: &Sender<RawMessage>) {
-    if !intrnal_mode {
-        return;
-    }
-    let not = RawNotification::new::<req::InternalFeedback>(&msg.to_string());
-    sender.send(RawMessage::Notification(not)).unwrap();
+fn show_message<M: Into<String>>(typ: req::MessageType, msg: M, sender: &Sender<RawMessage>) {
+    let not = RawNotification::new::<req::ShowMessage>(&req::ShowMessageParams {
+        typ,
+        message: msg.into(),
+    });
+
+    sender.send(not.into()).unwrap();
 }
 
 fn is_canceled(e: &failure::Error) -> bool {
diff --git a/crates/ra_lsp_server/src/req.rs b/crates/ra_lsp_server/src/req.rs
index 5c589f969..e0571fd78 100644
--- a/crates/ra_lsp_server/src/req.rs
+++ b/crates/ra_lsp_server/src/req.rs
@@ -8,7 +8,8 @@ pub use lsp_types::{
     CompletionParams, CompletionResponse, DocumentOnTypeFormattingParams, DocumentSymbolParams,
     DocumentSymbolResponse, ExecuteCommandParams, Hover, InitializeResult,
     PublishDiagnosticsParams, ReferenceParams, SignatureHelp, TextDocumentEdit,
-    TextDocumentPositionParams, TextEdit, WorkspaceEdit, WorkspaceSymbolParams
+    TextDocumentPositionParams, TextEdit, WorkspaceEdit, WorkspaceSymbolParams,
+    MessageType, ShowMessageParams,
 };
 
 pub enum AnalyzerStatus {}
@@ -171,10 +172,3 @@ pub struct SourceChange {
     pub workspace_edit: WorkspaceEdit,
     pub cursor_position: Option<TextDocumentPositionParams>,
 }
-
-pub enum InternalFeedback {}
-
-impl Notification for InternalFeedback {
-    const METHOD: &'static str = "internalFeedback";
-    type Params = String;
-}