From d3a2b21a8c34c7b7eea0a001a1412992e3ed2cb7 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 29 Sep 2020 20:08:27 +0200
Subject: Add panic_context module for better panic messages

---
 crates/rust-analyzer/src/dispatch.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'crates/rust-analyzer')

diff --git a/crates/rust-analyzer/src/dispatch.rs b/crates/rust-analyzer/src/dispatch.rs
index 891fdb96d..36f0c1d52 100644
--- a/crates/rust-analyzer/src/dispatch.rs
+++ b/crates/rust-analyzer/src/dispatch.rs
@@ -1,5 +1,5 @@
 //! A visitor for downcasting arbitrary request (JSON) into a specific type.
-use std::panic;
+use std::{fmt, panic};
 
 use serde::{de::DeserializeOwned, Serialize};
 
@@ -49,7 +49,7 @@ impl<'a> RequestDispatcher<'a> {
     ) -> Result<&mut Self>
     where
         R: lsp_types::request::Request + 'static,
-        R::Params: DeserializeOwned + Send + 'static,
+        R::Params: DeserializeOwned + Send + fmt::Debug + 'static,
         R::Result: Serialize + 'static,
     {
         let (id, params) = match self.parse::<R>() {
@@ -61,7 +61,10 @@ impl<'a> RequestDispatcher<'a> {
 
         self.global_state.task_pool.handle.spawn({
             let world = self.global_state.snapshot();
+
             move || {
+                let _ctx =
+                    stdx::panic_context::enter(format!("request: {} {:#?}", R::METHOD, params));
                 let result = f(world, params);
                 Task::Response(result_to_response::<R>(id, result))
             }
-- 
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