Add `close_language_servers` method on `Editor`

Cargo.lock

@@ -342,6 +342,7 @@ version = "0.2.0"
 dependencies = [
  "anyhow",
  "crossterm",
+ "futures-util",
  "helix-core",
  "helix-lsp",
  "helix-tui",

helix-term/src/application.rs

@@ -406,16 +406,7 @@ impl Application {
 
         self.event_loop().await;
 
-        tokio::time::timeout(
-            Duration::from_millis(500),
-            future::join_all(
-                self.editor
-                    .language_servers
-                    .iter_clients()
-                    .map(|client| client.force_shutdown()),
-            ),
-        )
-        .await;
+        self.editor.close_language_servers(None).await;
 
         // reset cursor shape
         write!(stdout, "\x1B[2 q");

helix-view/Cargo.toml

@@ -27,6 +27,7 @@ once_cell = "1.8"
 url = "2"
 
 tokio = { version = "1", features = ["full"] }
+futures-util = { version = "0.3", features = ["std", "async-await"], default-features = false }
 
 slotmap = "1"
 

helix-view/src/editor.rs

@@ -2,7 +2,9 @@ use crate::{theme::Theme, tree::Tree, Document, DocumentId, RegisterSelection, V
 use tui::layout::Rect;
 use tui::terminal::CursorKind;
 
+use futures_util::future;
 use std::path::PathBuf;
+use std::time::Duration;
 
 use slotmap::SlotMap;
 
@@ -270,4 +272,22 @@ impl Editor {
             (None, CursorKind::Hidden)
         }
     }
+
+    /// Closes language servers with timeout. The default timeout is 500 ms, use
+    /// `timeout` parameter to override this.
+    pub async fn close_language_servers(
+        &self,
+        timeout: Option<u64>,
+    ) -> Result<(), tokio::time::error::Elapsed> {
+        tokio::time::timeout(
+            Duration::from_millis(timeout.unwrap_or(500)),
+            future::join_all(
+                self.language_servers
+                    .iter_clients()
+                    .map(|client| client.force_shutdown()),
+            ),
+        )
+        .await
+        .map(|_| ())
+    }
 }