From d4b21476a8f8dc882e2ace78e156da6fcb70a8ff Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Wed, 3 Jun 2020 10:52:35 +0200
Subject: Derive local roots from Workspaces

---
 crates/rust-analyzer/src/main_loop.rs |  1 -
 crates/rust-analyzer/src/world.rs     | 24 ++++++++++++++----------
 2 files changed, 14 insertions(+), 11 deletions(-)

(limited to 'crates')

diff --git a/crates/rust-analyzer/src/main_loop.rs b/crates/rust-analyzer/src/main_loop.rs
index f1287d52c..2e5499485 100644
--- a/crates/rust-analyzer/src/main_loop.rs
+++ b/crates/rust-analyzer/src/main_loop.rs
@@ -164,7 +164,6 @@ pub fn main_loop(ws_roots: Vec<PathBuf>, config: Config, connection: Connection)
         }
 
         WorldState::new(
-            ws_roots,
             workspaces,
             config.lru_capacity,
             &globs,
diff --git a/crates/rust-analyzer/src/world.rs b/crates/rust-analyzer/src/world.rs
index 367272925..c1010e86a 100644
--- a/crates/rust-analyzer/src/world.rs
+++ b/crates/rust-analyzer/src/world.rs
@@ -58,7 +58,7 @@ fn create_flycheck(workspaces: &[ProjectWorkspace], config: &FlycheckConfig) ->
 #[derive(Debug)]
 pub struct WorldState {
     pub config: Config,
-    pub roots: Vec<PathBuf>,
+    pub local_roots: Vec<PathBuf>,
     pub workspaces: Arc<Vec<ProjectWorkspace>>,
     pub analysis_host: AnalysisHost,
     pub vfs: Arc<RwLock<Vfs>>,
@@ -81,7 +81,6 @@ pub struct WorldSnapshot {
 
 impl WorldState {
     pub fn new(
-        folder_roots: Vec<PathBuf>,
         workspaces: Vec<ProjectWorkspace>,
         lru_capacity: Option<usize>,
         exclude_globs: &[Glob],
@@ -93,6 +92,7 @@ impl WorldState {
         let extern_dirs: FxHashSet<_> =
             workspaces.iter().flat_map(ProjectWorkspace::out_dirs).collect();
 
+        let mut local_roots = Vec::new();
         let roots: Vec<_> = {
             let create_filter = |is_member| {
                 RustPackageFilterBuilder::default()
@@ -100,12 +100,16 @@ impl WorldState {
                     .exclude(exclude_globs.iter().cloned())
                     .into_vfs_filter()
             };
-            folder_roots
+            workspaces
                 .iter()
-                .map(|path| RootEntry::new(path.clone(), create_filter(true)))
-                .chain(workspaces.iter().flat_map(ProjectWorkspace::to_roots).map(|pkg_root| {
-                    RootEntry::new(pkg_root.path().to_owned(), create_filter(pkg_root.is_member()))
-                }))
+                .flat_map(ProjectWorkspace::to_roots)
+                .map(|pkg_root| {
+                    let path = pkg_root.path().to_owned();
+                    if pkg_root.is_member() {
+                        local_roots.push(path.clone());
+                    }
+                    RootEntry::new(path, create_filter(pkg_root.is_member()))
+                })
                 .chain(
                     extern_dirs
                         .iter()
@@ -121,7 +125,7 @@ impl WorldState {
         let mut extern_source_roots = FxHashMap::default();
         for r in vfs_roots {
             let vfs_root_path = vfs.root2path(r);
-            let is_local = folder_roots.iter().any(|it| vfs_root_path.starts_with(it));
+            let is_local = local_roots.iter().any(|it| vfs_root_path.starts_with(it));
             change.add_root(SourceRootId(r.0), is_local);
             change.set_debug_root_path(SourceRootId(r.0), vfs_root_path.display().to_string());
 
@@ -178,7 +182,7 @@ impl WorldState {
         analysis_host.apply_change(change);
         WorldState {
             config,
-            roots: folder_roots,
+            local_roots,
             workspaces: Arc::new(workspaces),
             analysis_host,
             vfs: Arc::new(RwLock::new(vfs)),
@@ -216,7 +220,7 @@ impl WorldState {
             match c {
                 VfsChange::AddRoot { root, files } => {
                     let root_path = self.vfs.read().root2path(root);
-                    let is_local = self.roots.iter().any(|r| root_path.starts_with(r));
+                    let is_local = self.local_roots.iter().any(|r| root_path.starts_with(r));
                     if is_local {
                         *roots_scanned += 1;
                         for (file, path, text) in files {
-- 
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