From 4b59c3a538f27238b0466898f1b4ac69d1f9e778 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Thu, 28 Jan 2021 17:04:44 +0300
Subject: [PATCH] Make logger-based debugging more pleasant

---
 crates/flycheck/src/lib.rs            | 16 +++++++++++++++-
 crates/project_model/src/workspace.rs |  5 +++--
 crates/rust-analyzer/src/reload.rs    |  2 +-
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/crates/flycheck/src/lib.rs b/crates/flycheck/src/lib.rs
index 4388e8c6735..e04208006fe 100644
--- a/crates/flycheck/src/lib.rs
+++ b/crates/flycheck/src/lib.rs
@@ -76,7 +76,6 @@ pub fn update(&self) {
     }
 }
 
-#[derive(Debug)]
 pub enum Message {
     /// Request adding a diagnostic with fixes included to a file
     AddDiagnostic { workspace_root: PathBuf, diagnostic: Diagnostic },
@@ -89,6 +88,21 @@ pub enum Message {
     },
 }
 
+impl fmt::Debug for Message {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Message::AddDiagnostic { workspace_root, diagnostic } => f
+                .debug_struct("AddDiagnostic")
+                .field("workspace_root", workspace_root)
+                .field("diagnostic_code", &diagnostic.code.as_ref().map(|it| &it.code))
+                .finish(),
+            Message::Progress { id, progress } => {
+                f.debug_struct("Progress").field("id", id).field("progress", progress).finish()
+            }
+        }
+    }
+}
+
 #[derive(Debug)]
 pub enum Progress {
     DidStart,
diff --git a/crates/project_model/src/workspace.rs b/crates/project_model/src/workspace.rs
index bc5041e5a3d..559f4e7bf6e 100644
--- a/crates/project_model/src/workspace.rs
+++ b/crates/project_model/src/workspace.rs
@@ -51,6 +51,7 @@ pub enum ProjectWorkspace {
 
 impl fmt::Debug for ProjectWorkspace {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        // Make sure this isn't too verbose.
         match self {
             ProjectWorkspace::Cargo { cargo, sysroot, rustc, rustc_cfg } => f
                 .debug_struct("Cargo")
@@ -60,7 +61,7 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
                     "n_rustc_compiler_crates",
                     &rustc.as_ref().map_or(0, |rc| rc.packages().len()),
                 )
-                .field("rustc_cfg", rustc_cfg)
+                .field("n_rustc_cfg", &rustc_cfg.len())
                 .finish(),
             ProjectWorkspace::Json { project, sysroot, rustc_cfg } => {
                 let mut debug_struct = f.debug_struct("Json");
@@ -68,7 +69,7 @@ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
                 if let Some(sysroot) = sysroot {
                     debug_struct.field("n_sysroot_crates", &sysroot.crates().len());
                 }
-                debug_struct.field("rustc_cfg", rustc_cfg);
+                debug_struct.field("n_rustc_cfg", &rustc_cfg.len());
                 debug_struct.finish()
             }
         }
diff --git a/crates/rust-analyzer/src/reload.rs b/crates/rust-analyzer/src/reload.rs
index 0507186dce5..ef73099cfae 100644
--- a/crates/rust-analyzer/src/reload.rs
+++ b/crates/rust-analyzer/src/reload.rs
@@ -103,10 +103,10 @@ pub(crate) fn fetch_workspaces_request(&mut self) {
         self.fetch_workspaces_queue.request_op()
     }
     pub(crate) fn fetch_workspaces_if_needed(&mut self) {
-        log::info!("will fetch workspaces");
         if !self.fetch_workspaces_queue.should_start_op() {
             return;
         }
+        log::info!("will fetch workspaces");
 
         self.task_pool.handle.spawn_with_sender({
             let linked_projects = self.config.linked_projects();