5 files changed, 34 insertions, 12 deletions

diff --git a/crates/rust-analyzer/src/cli/load_cargo.rs b/crates/rust-analyzer/src/cli/load_cargo.rs
index 16ccab781..dbab4f5f4 100644
--- a/crates/rust-analyzer/src/cli/load_cargo.rs
+++ b/crates/rust-analyzer/src/cli/load_cargo.rs
@@ -46,7 +46,7 @@ pub fn load_cargo(
         vfs.file_id(&path)
     });
 
-    let project_folders = ProjectFolders::new(&[ws]);
+    let project_folders = ProjectFolders::new(&[ws], &[]);
     loader.set_config(vfs::loader::Config { load: project_folders.load, watch: vec![] });
 
     log::debug!("crate graph: {:?}", crate_graph);
diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs
index 071fde64d..37487b6ac 100644
--- a/crates/rust-analyzer/src/config.rs
+++ b/crates/rust-analyzer/src/config.rs
@@ -7,7 +7,7 @@
 //! configure the server itself, feature flags are passed into analysis, and
 //! tweak things like automatic insertion of `()` in completions.
 
-use std::{convert::TryFrom, ffi::OsString, iter, path::PathBuf};
+use std::{ffi::OsString, iter, path::PathBuf};
 
 use flycheck::FlycheckConfig;
 use hir::PrefixKind;
@@ -105,6 +105,8 @@ config_data! {
 
         /// Controls file watching implementation.
         files_watcher: String = "\"client\"",
+        /// These directories will be ignored by rust-analyzer.
+        files_excludeDirs: Vec<PathBuf> = "[]",
 
         /// Whether to show `Debug` action. Only applies when
         /// `#rust-analyzer.hoverActions.enable#` is set.
@@ -248,7 +250,7 @@ impl LensConfig {
 #[derive(Debug, Clone)]
 pub struct FilesConfig {
     pub watcher: FilesWatcher,
-    pub exclude: Vec<String>,
+    pub exclude: Vec<AbsPathBuf>,
 }
 
 #[derive(Debug, Clone)]
@@ -458,7 +460,7 @@ impl Config {
                 "notify" => FilesWatcher::Notify,
                 "client" | _ => FilesWatcher::Client,
             },
-            exclude: Vec::new(),
+            exclude: self.data.files_excludeDirs.iter().map(|it| self.root_path.join(it)).collect(),
         }
     }
     pub fn notifications(&self) -> NotificationsConfig {
@@ -468,11 +470,7 @@ impl Config {
         self.data.cargo_autoreload
     }
     pub fn cargo(&self) -> CargoConfig {
-        let rustc_source = self.data.rustcSource.clone().and_then(|it| {
-            AbsPathBuf::try_from(it)
-                .map_err(|_| log::error!("rustc source directory must be an absolute path"))
-                .ok()
-        });
+        let rustc_source = self.data.rustcSource.as_ref().map(|it| self.root_path.join(&it));
 
         CargoConfig {
             no_default_features: self.data.cargo_noDefaultFeatures,
@@ -767,6 +765,10 @@ fn field_props(field: &str, ty: &str, doc: &[&str], default: &str) -> serde_json
             "type": "array",
             "items": { "type": "string" },
         },
+        "Vec<PathBuf>" => set! {
+            "type": "array",
+            "items": { "type": "string" },
+        },
         "FxHashSet<String>" => set! {
             "type": "array",
             "items": { "type": "string" },
diff --git a/crates/rust-analyzer/src/reload.rs b/crates/rust-analyzer/src/reload.rs
index dabfb4241..0507186dc 100644
--- a/crates/rust-analyzer/src/reload.rs
+++ b/crates/rust-analyzer/src/reload.rs
@@ -214,7 +214,8 @@ impl GlobalState {
 
         let mut change = Change::new();
 
-        let project_folders = ProjectFolders::new(&workspaces);
+        let files_config = self.config.files();
+        let project_folders = ProjectFolders::new(&workspaces, &files_config.exclude);
 
         self.proc_macro_client = match self.config.proc_macro_srv() {
             None => None,
@@ -231,7 +232,7 @@ impl GlobalState {
             },
         };
 
-        let watch = match self.config.files().watcher {
+        let watch = match files_config.watcher {
             FilesWatcher::Client => vec![],
             FilesWatcher::Notify => project_folders.watch,
         };
@@ -319,7 +320,10 @@ pub(crate) struct ProjectFolders {
 }
 
 impl ProjectFolders {
-    pub(crate) fn new(workspaces: &[ProjectWorkspace]) -> ProjectFolders {
+    pub(crate) fn new(
+        workspaces: &[ProjectWorkspace],
+        global_excludes: &[AbsPathBuf],
+    ) -> ProjectFolders {
         let mut res = ProjectFolders::default();
         let mut fsc = FileSetConfig::builder();
         let mut local_filesets = vec![];
@@ -333,6 +337,12 @@ impl ProjectFolders {
                 dirs.extensions.push("rs".into());
                 dirs.include.extend(root.include);
                 dirs.exclude.extend(root.exclude);
+                for excl in global_excludes {
+                    if dirs.include.iter().any(|incl| incl.starts_with(excl)) {
+                        dirs.exclude.push(excl.clone());
+                    }
+                }
+
                 vfs::loader::Entry::Directories(dirs)
             };
 
diff --git a/docs/user/generated_config.adoc b/docs/user/generated_config.adoc
index 1974082da..55178c84c 100644
--- a/docs/user/generated_config.adoc
+++ b/docs/user/generated_config.adoc
@@ -56,6 +56,8 @@
  List of warnings that should be displayed with hint severity.\n\nThe  warnings will be indicated by faded text or three dots in code and  will not show up in the `Problems Panel`.
 [[rust-analyzer.files.watcher]]rust-analyzer.files.watcher (default: `"client"`)::
  Controls file watching implementation.
+[[rust-analyzer.files.excludeDirs]]rust-analyzer.files.excludeDirs (default: `[]`)::
+ These directories will be ignored by rust-analyzer.
 [[rust-analyzer.hoverActions.debug]]rust-analyzer.hoverActions.debug (default: `true`)::
  Whether to show `Debug` action. Only applies when  `#rust-analyzer.hoverActions.enable#` is set.
 [[rust-analyzer.hoverActions.enable]]rust-analyzer.hoverActions.enable (default: `true`)::
diff --git a/editors/code/package.json b/editors/code/package.json
index ee54638f1..66af94186 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -555,6 +555,14 @@
                     "default": "client",
                     "type": "string"
                 },
+                "rust-analyzer.files.excludeDirs": {
+                    "markdownDescription": "These directories will be ignored by rust-analyzer.",
+                    "default": [],
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    }
+                },
                 "rust-analyzer.hoverActions.debug": {
                     "markdownDescription": "Whether to show `Debug` action. Only applies when `#rust-analyzer.hoverActions.enable#` is set.",
                     "default": true,