7 files changed, 63 insertions, 83 deletions

diff --git a/crates/ra_project_model/src/lib.rs b/crates/ra_project_model/src/lib.rs
index dd9c80691..a133243b4 100644
--- a/crates/ra_project_model/src/lib.rs
+++ b/crates/ra_project_model/src/lib.rs
@@ -58,22 +58,16 @@ pub enum ProjectWorkspace {
 #[derive(Clone)]
 pub struct PackageRoot {
     /// Path to the root folder
-    path: PathBuf,
+    pub path: PathBuf,
     /// Is a member of the current workspace
-    is_member: bool,
+    pub is_member: bool,
 }
-
 impl PackageRoot {
-    pub fn new(path: PathBuf, is_member: bool) -> PackageRoot {
-        PackageRoot { path, is_member }
-    }
-
-    pub fn path(&self) -> &PathBuf {
-        &self.path
+    pub fn new_member(path: PathBuf) -> PackageRoot {
+        Self { path, is_member: true }
     }
-
-    pub fn is_member(&self) -> bool {
-        self.is_member
+    pub fn new_non_member(path: PathBuf) -> PackageRoot {
+        Self { path, is_member: false }
     }
 }
 
@@ -130,24 +124,18 @@ impl ProjectWorkspace {
     pub fn to_roots(&self) -> Vec<PackageRoot> {
         match self {
             ProjectWorkspace::Json { project } => {
-                let mut roots = Vec::with_capacity(project.roots.len());
-                for root in &project.roots {
-                    roots.push(PackageRoot::new(root.path.clone(), true));
-                }
-                roots
-            }
-            ProjectWorkspace::Cargo { cargo, sysroot } => {
-                let mut roots = Vec::with_capacity(cargo.packages().len() + sysroot.crates().len());
-                for pkg in cargo.packages() {
-                    let root = cargo[pkg].root().to_path_buf();
-                    let member = cargo[pkg].is_member;
-                    roots.push(PackageRoot::new(root, member));
-                }
-                for krate in sysroot.crates() {
-                    roots.push(PackageRoot::new(sysroot[krate].root_dir().to_path_buf(), false))
-                }
-                roots
+                project.roots.iter().map(|r| PackageRoot::new_member(r.path.clone())).collect()
             }
+            ProjectWorkspace::Cargo { cargo, sysroot } => cargo
+                .packages()
+                .map(|pkg| PackageRoot {
+                    path: cargo[pkg].root().to_path_buf(),
+                    is_member: cargo[pkg].is_member,
+                })
+                .chain(sysroot.crates().map(|krate| {
+                    PackageRoot::new_non_member(sysroot[krate].root_dir().to_path_buf())
+                }))
+                .collect(),
         }
     }
 
diff --git a/crates/rust-analyzer/src/cli/analysis_bench.rs b/crates/rust-analyzer/src/cli/analysis_bench.rs
index 7667873d5..0b138edd7 100644
--- a/crates/rust-analyzer/src/cli/analysis_bench.rs
+++ b/crates/rust-analyzer/src/cli/analysis_bench.rs
@@ -65,10 +65,10 @@ pub fn analysis_bench(
         roots
             .iter()
             .find_map(|(source_root_id, project_root)| {
-                if project_root.is_member() {
+                if project_root.is_member {
                     for file_id in db.source_root(*source_root_id).walk() {
                         let rel_path = db.file_relative_path(file_id);
-                        let abs_path = rel_path.to_path(project_root.path());
+                        let abs_path = rel_path.to_path(&project_root.path);
                         if abs_path == path {
                             return Some(file_id);
                         }
diff --git a/crates/rust-analyzer/src/cli/analysis_stats.rs b/crates/rust-analyzer/src/cli/analysis_stats.rs
index 75cf2dae5..edd90df77 100644
--- a/crates/rust-analyzer/src/cli/analysis_stats.rs
+++ b/crates/rust-analyzer/src/cli/analysis_stats.rs
@@ -39,7 +39,7 @@ pub fn analysis_stats(
         roots
             .into_iter()
             .filter_map(|(source_root_id, project_root)| {
-                if with_deps || project_root.is_member() {
+                if with_deps || project_root.is_member {
                     Some(source_root_id)
                 } else {
                     None
diff --git a/crates/rust-analyzer/src/cli/load_cargo.rs b/crates/rust-analyzer/src/cli/load_cargo.rs
index 2c0bde920..109b1d74b 100644
--- a/crates/rust-analyzer/src/cli/load_cargo.rs
+++ b/crates/rust-analyzer/src/cli/load_cargo.rs
@@ -36,8 +36,7 @@ pub(crate) fn load_cargo(
     extern_dirs.extend(ws.out_dirs());
 
     let mut project_roots = ws.to_roots();
-    project_roots
-        .extend(extern_dirs.iter().map(|path| PackageRoot::new(path.to_path_buf(), false)));
+    project_roots.extend(extern_dirs.iter().cloned().map(PackageRoot::new_non_member));
 
     let (sender, receiver) = unbounded();
     let sender = Box::new(move |t| sender.send(t).unwrap());
@@ -46,9 +45,9 @@ pub(crate) fn load_cargo(
             .iter()
             .map(|pkg_root| {
                 RootEntry::new(
-                    pkg_root.path().clone(),
+                    pkg_root.path.clone(),
                     RustPackageFilterBuilder::default()
-                        .set_member(pkg_root.is_member())
+                        .set_member(pkg_root.is_member)
                         .into_vfs_filter(),
                 )
             })
@@ -58,14 +57,11 @@ pub(crate) fn load_cargo(
     );
 
     let source_roots = roots
-        .iter()
-        .map(|&vfs_root| {
+        .into_iter()
+        .map(|vfs_root| {
             let source_root_id = vfs_root_to_id(vfs_root);
-            let project_root = project_roots
-                .iter()
-                .find(|it| it.path() == &vfs.root2path(vfs_root))
-                .unwrap()
-                .clone();
+            let project_root =
+                project_roots.iter().find(|it| it.path == vfs.root2path(vfs_root)).unwrap().clone();
             (source_root_id, project_root)
         })
         .collect::<FxHashMap<_, _>>();
@@ -97,7 +93,7 @@ pub(crate) fn load(
             match change {
                 VfsChange::AddRoot { root, files } => {
                     let source_root_id = vfs_root_to_id(root);
-                    let is_local = source_roots[&source_root_id].is_member();
+                    let is_local = source_roots[&source_root_id].is_member;
                     log::debug!(
                         "loaded source root {:?} with path {:?}",
                         source_root_id,
@@ -106,7 +102,7 @@ pub(crate) fn load(
                     analysis_change.add_root(source_root_id, is_local);
                     analysis_change.set_debug_root_path(
                         source_root_id,
-                        source_roots[&source_root_id].path().display().to_string(),
+                        source_roots[&source_root_id].path.display().to_string(),
                     );
 
                     let vfs_root_path = vfs.root2path(root);
diff --git a/crates/rust-analyzer/src/main_loop.rs b/crates/rust-analyzer/src/main_loop.rs
index 95e676e0f..e61a56935 100644
--- a/crates/rust-analyzer/src/main_loop.rs
+++ b/crates/rust-analyzer/src/main_loop.rs
@@ -132,8 +132,8 @@ pub fn main_loop(ws_roots: Vec<PathBuf>, config: Config, connection: Connection)
                 watchers: workspaces
                     .iter()
                     .flat_map(|ws| ws.to_roots())
-                    .filter(|root| root.is_member())
-                    .map(|root| format!("{}/**/*.rs", root.path().display()))
+                    .filter(|root| root.is_member)
+                    .map(|root| format!("{}/**/*.rs", root.path.display()))
                     .map(|glob_pattern| req::FileSystemWatcher { glob_pattern, kind: None })
                     .collect(),
             };
diff --git a/crates/rust-analyzer/src/vfs_glob.rs b/crates/rust-analyzer/src/vfs_glob.rs
index 91b33f94e..ff37a7008 100644
--- a/crates/rust-analyzer/src/vfs_glob.rs
+++ b/crates/rust-analyzer/src/vfs_glob.rs
@@ -29,10 +29,14 @@ impl RustPackageFilterBuilder {
         self.is_member = is_member;
         self
     }
-    pub fn exclude(mut self, glob: Glob) -> RustPackageFilterBuilder {
-        self.exclude.add(glob);
+
+    pub fn exclude(mut self, globs: impl IntoIterator<Item = Glob>) -> RustPackageFilterBuilder {
+        for glob in globs.into_iter() {
+            self.exclude.add(glob);
+        }
         self
     }
+
     pub fn into_vfs_filter(self) -> Box<dyn Filter> {
         let RustPackageFilterBuilder { is_member, mut exclude } = self;
         for &glob in ALWAYS_IGNORED {
@@ -87,7 +91,7 @@ fn test_globs() {
 
     let filter = RustPackageFilterBuilder::default()
         .set_member(true)
-        .exclude(Glob::new("src/llvm-project/**").unwrap())
+        .exclude(std::iter::once(Glob::new("src/llvm-project/**").unwrap()))
         .into_vfs_filter();
 
     assert!(!filter.include_dir(RelativePath::new("src/llvm-project/clang")));
diff --git a/crates/rust-analyzer/src/world.rs b/crates/rust-analyzer/src/world.rs
index 5674f42ef..a6549a8f4 100644
--- a/crates/rust-analyzer/src/world.rs
+++ b/crates/rust-analyzer/src/world.rs
@@ -87,44 +87,35 @@ impl WorldState {
     ) -> WorldState {
         let mut change = AnalysisChange::new();
 
-        let mut roots = Vec::new();
-        roots.extend(folder_roots.iter().map(|path| {
-            let mut filter = RustPackageFilterBuilder::default().set_member(true);
-            for glob in exclude_globs.iter() {
-                filter = filter.exclude(glob.clone());
-            }
-            RootEntry::new(path.clone(), filter.into_vfs_filter())
-        }));
-        for ws in workspaces.iter() {
-            roots.extend(ws.to_roots().into_iter().map(|pkg_root| {
-                let mut filter =
-                    RustPackageFilterBuilder::default().set_member(pkg_root.is_member());
-                for glob in exclude_globs.iter() {
-                    filter = filter.exclude(glob.clone());
-                }
-                RootEntry::new(pkg_root.path().clone(), filter.into_vfs_filter())
-            }));
-        }
-
-        let mut extern_dirs = FxHashSet::default();
-        for ws in workspaces.iter() {
-            extern_dirs.extend(ws.out_dirs());
-        }
-
-        let mut extern_source_roots = FxHashMap::default();
-
-        roots.extend(extern_dirs.iter().map(|path| {
-            let mut filter = RustPackageFilterBuilder::default().set_member(false);
-            for glob in exclude_globs.iter() {
-                filter = filter.exclude(glob.clone());
-            }
-            RootEntry::new(PathBuf::from(&path), filter.into_vfs_filter())
-        }));
+        let extern_dirs: FxHashSet<_> =
+            workspaces.iter().flat_map(ProjectWorkspace::out_dirs).collect();
+
+        let roots: Vec<_> = {
+            let create_filter = |is_member| {
+                RustPackageFilterBuilder::default()
+                    .set_member(is_member)
+                    .exclude(exclude_globs.iter().cloned())
+                    .into_vfs_filter()
+            };
+            folder_roots
+                .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, create_filter(pkg_root.is_member))
+                }))
+                .chain(
+                    extern_dirs
+                        .iter()
+                        .map(|path| RootEntry::new(path.to_owned(), create_filter(false))),
+                )
+                .collect()
+        };
 
         let (task_sender, task_receiver) = unbounded();
         let task_sender = Box::new(move |t| task_sender.send(t).unwrap());
         let (mut vfs, vfs_roots) = Vfs::new(roots, task_sender, watch);
 
+        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));
@@ -132,6 +123,7 @@ impl WorldState {
             change.set_debug_root_path(SourceRootId(r.0), vfs_root_path.display().to_string());
 
             // FIXME: add path2root in vfs to simpily this logic
+
             if extern_dirs.contains(&vfs_root_path) {
                 extern_source_roots.insert(vfs_root_path, ExternSourceId(r.0));
             }