feat: resolve code action

helix-lsp/src/client.rs

@@ -954,6 +954,24 @@ impl Client {
         Some(self.call::<lsp::request::ResolveCompletionItem>(completion_item))
     }
 
+    pub fn resolve_code_action(
+        &self,
+        code_action: lsp::CodeAction,
+    ) -> Option<impl Future<Output = Result<Value>>> {
+        let capabilities = self.capabilities.get().unwrap();
+
+        // Return early if the server does not support resolving completion items.
+        match capabilities.completion_provider {
+            Some(lsp::CompletionOptions {
+                resolve_provider: Some(true),
+                ..
+            }) => (),
+            _ => return None,
+        }
+
+        Some(self.call::<lsp::request::CodeActionResolveRequest>(code_action))
+    }
+
     pub fn text_document_signature_help(
         &self,
         text_document: lsp::TextDocumentIdentifier,

helix-term/src/commands/lsp.rs

@@ -746,6 +746,15 @@ pub fn code_action(cx: &mut Context) {
                         if let Some(ref workspace_edit) = code_action.edit {
                             log::debug!("edit: {:?}", workspace_edit);
                             let _ = apply_workspace_edit(editor, offset_encoding, workspace_edit);
+                        } else if let Some(future) = language_server.resolve_code_action(code_action.clone()) {
+                            if let Ok(response) = helix_lsp::block_on(future) {
+                                if let Ok(code_action) = serde_json::from_value::<CodeAction>(response) {
+                                    if let Some(ref workspace_edit) = code_action.edit {
+                                        log::debug!("resolved edit: {:?}", workspace_edit);
+                                        let _ = apply_workspace_edit(editor, offset_encoding, workspace_edit);
+                                    }
+                                }
+                            }
                         }
 
                         // if code action provides both edit and command first the edit