From 73d73077febba921918b5611574bf514eae63006 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Thu, 25 Jun 2020 23:11:59 +0200
Subject: Separate creation and initialization of global state

---
 crates/rust-analyzer/src/global_state.rs | 121 +++++++++++++++++--------------
 1 file changed, 65 insertions(+), 56 deletions(-)

(limited to 'crates')

diff --git a/crates/rust-analyzer/src/global_state.rs b/crates/rust-analyzer/src/global_state.rs
index 149b1b5f9..be5a3f8a7 100644
--- a/crates/rust-analyzer/src/global_state.rs
+++ b/crates/rust-analyzer/src/global_state.rs
@@ -81,7 +81,7 @@ pub(crate) struct GlobalState {
     pub(crate) req_queue: ReqQueue,
     latest_requests: Arc<RwLock<LatestRequests>>,
     source_root_config: SourceRootConfig,
-    _proc_macro_client: ProcMacroClient,
+    proc_macro_client: ProcMacroClient,
     workspaces: Arc<Vec<ProjectWorkspace>>,
 }
 
@@ -103,61 +103,14 @@ impl GlobalState {
         config: Config,
         req_queue: ReqQueue,
     ) -> GlobalState {
-        let mut change = AnalysisChange::new();
-
-        let project_folders = ProjectFolders::new(&workspaces);
-
         let (task_sender, task_receiver) = unbounded::<vfs::loader::Message>();
-        let mut vfs = vfs::Vfs::default();
-
-        let proc_macro_client = match &config.proc_macro_srv {
-            None => ProcMacroClient::dummy(),
-            Some((path, args)) => match ProcMacroClient::extern_process(path.into(), args) {
-                Ok(it) => it,
-                Err(err) => {
-                    log::error!(
-                        "Failed to run ra_proc_macro_srv from path {}, error: {:?}",
-                        path.display(),
-                        err
-                    );
-                    ProcMacroClient::dummy()
-                }
-            },
-        };
 
-        let mut loader = {
+        let loader = {
             let loader = vfs_notify::NotifyHandle::spawn(Box::new(move |msg| {
                 task_sender.send(msg).unwrap()
             }));
             Box::new(loader)
         };
-        let watch = match config.files.watcher {
-            FilesWatcher::Client => vec![],
-            FilesWatcher::Notify => project_folders.watch,
-        };
-        loader.set_config(vfs::loader::Config { load: project_folders.load, watch });
-
-        // Create crate graph from all the workspaces
-        let mut crate_graph = CrateGraph::default();
-        let mut load = |path: &AbsPath| {
-            let contents = loader.load_sync(path);
-            let path = vfs::VfsPath::from(path.to_path_buf());
-            vfs.set_file_contents(path.clone(), contents);
-            vfs.file_id(&path)
-        };
-        for ws in workspaces.iter() {
-            crate_graph.extend(ws.to_crate_graph(
-                config.cargo.target.as_deref(),
-                &proc_macro_client,
-                &mut load,
-            ));
-        }
-        change.set_crate_graph(crate_graph);
-
-        let flycheck = config.check.as_ref().and_then(|c| create_flycheck(&workspaces, c));
-
-        let mut analysis_host = AnalysisHost::new(lru_capacity);
-        analysis_host.apply_change(change);
 
         let task_pool = {
             let (sender, receiver) = unbounded();
@@ -168,24 +121,80 @@ impl GlobalState {
             sender,
             config,
             task_pool,
-            analysis_host,
+            analysis_host: AnalysisHost::new(lru_capacity),
             loader,
             task_receiver,
-            flycheck,
+            flycheck: None,
             diagnostics: Default::default(),
             mem_docs: FxHashSet::default(),
-            vfs: Arc::new(RwLock::new((vfs, FxHashMap::default()))),
+            vfs: Arc::new(RwLock::new((vfs::Vfs::default(), FxHashMap::default()))),
             status: Status::default(),
             req_queue,
             latest_requests: Default::default(),
-            source_root_config: project_folders.source_root_config,
-            _proc_macro_client: proc_macro_client,
-            workspaces: Arc::new(workspaces),
+            source_root_config: SourceRootConfig::default(),
+            proc_macro_client: ProcMacroClient::dummy(),
+            workspaces: Arc::new(Vec::new()),
         };
-        res.process_changes();
+        res.reload(workspaces);
         res
     }
 
+    pub(crate) fn reload(&mut self, workspaces: Vec<ProjectWorkspace>) {
+        let mut change = AnalysisChange::new();
+
+        let project_folders = ProjectFolders::new(&workspaces);
+
+        self.proc_macro_client = match &self.config.proc_macro_srv {
+            None => ProcMacroClient::dummy(),
+            Some((path, args)) => match ProcMacroClient::extern_process(path.into(), args) {
+                Ok(it) => it,
+                Err(err) => {
+                    log::error!(
+                        "Failed to run ra_proc_macro_srv from path {}, error: {:?}",
+                        path.display(),
+                        err
+                    );
+                    ProcMacroClient::dummy()
+                }
+            },
+        };
+        let watch = match self.config.files.watcher {
+            FilesWatcher::Client => vec![],
+            FilesWatcher::Notify => project_folders.watch,
+        };
+        self.loader.set_config(vfs::loader::Config { load: project_folders.load, watch });
+
+        // Create crate graph from all the workspaces
+        let crate_graph = {
+            let mut crate_graph = CrateGraph::default();
+            let vfs = &mut self.vfs.write().0;
+            let loader = &mut self.loader;
+            let mut load = |path: &AbsPath| {
+                let contents = loader.load_sync(path);
+                let path = vfs::VfsPath::from(path.to_path_buf());
+                vfs.set_file_contents(path.clone(), contents);
+                vfs.file_id(&path)
+            };
+            for ws in workspaces.iter() {
+                crate_graph.extend(ws.to_crate_graph(
+                    self.config.cargo.target.as_deref(),
+                    &self.proc_macro_client,
+                    &mut load,
+                ));
+            }
+
+            crate_graph
+        };
+        change.set_crate_graph(crate_graph);
+
+        self.flycheck = self.config.check.as_ref().and_then(|c| create_flycheck(&workspaces, c));
+        self.source_root_config = project_folders.source_root_config;
+        self.workspaces = Arc::new(workspaces);
+
+        self.analysis_host.apply_change(change);
+        self.process_changes();
+    }
+
     pub(crate) fn update_configuration(&mut self, config: Config) {
         self.analysis_host.update_lru_capacity(config.lru_capacity);
         if config.check != self.config.check {
-- 
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