allow to exclude certain files and directories

crates/ra_lsp_server/src/config.rs

@@ -1,7 +1,7 @@
 use serde::{Deserialize, Deserializer};
 
 /// Client provided initialization options
-#[derive(Deserialize, Clone, Copy, Debug, PartialEq, Eq)]
+#[derive(Deserialize, Clone, Debug, PartialEq, Eq)]
 #[serde(rename_all = "camelCase", default)]
 pub struct ServerConfig {
     /// Whether the client supports our custom highlighting publishing decorations.
@@ -18,12 +18,19 @@ pub struct ServerConfig {
     #[serde(deserialize_with = "nullable_bool_true")]
     pub show_workspace_loaded: bool,
 
+    pub exclude_globs: Vec<String>,
+
     pub lru_capacity: Option<usize>,
 }
 
 impl Default for ServerConfig {
     fn default() -> ServerConfig {
-        ServerConfig { publish_decorations: false, show_workspace_loaded: true, lru_capacity: None }
+        ServerConfig {
+            publish_decorations: false,
+            show_workspace_loaded: true,
+            exclude_globs: Vec::new(),
+            lru_capacity: None,
+        }
     }
 }
 

crates/ra_lsp_server/src/main_loop.rs

@@ -56,6 +56,7 @@ pub fn main_loop(
     msg_receiver: &Receiver<RawMessage>,
     msg_sender: &Sender<RawMessage>,
 ) -> Result<()> {
+    log::debug!("server_config: {:?}", config);
     // FIXME: support dynamic workspace loading.
     let workspaces = {
         let ws_worker = workspace_loader();
@@ -77,11 +78,16 @@ pub fn main_loop(
         }
         loaded_workspaces
     };
-
+    let globs = config
+        .exclude_globs
+        .iter()
+        .map(|glob| ra_vfs_glob::Glob::new(glob))
+        .collect::<std::result::Result<Vec<_>, _>>()?;
     let mut state = WorldState::new(
         ws_roots,
         workspaces,
         config.lru_capacity,
+        &globs,
         Options {
             publish_decorations: config.publish_decorations,
             show_workspace_loaded: config.show_workspace_loaded,

crates/ra_lsp_server/src/world.rs

@@ -10,7 +10,7 @@
     Analysis, AnalysisChange, AnalysisHost, CrateGraph, FileId, LibraryData, SourceRootId,
 };
 use ra_vfs::{RootEntry, Vfs, VfsChange, VfsFile, VfsRoot};
-use ra_vfs_glob::RustPackageFilterBuilder;
+use ra_vfs_glob::{Glob, RustPackageFilterBuilder};
 use relative_path::RelativePathBuf;
 
 use crate::{
@@ -56,25 +56,27 @@ pub fn new(
         folder_roots: Vec<PathBuf>,
         workspaces: Vec<ProjectWorkspace>,
         lru_capacity: Option<usize>,
+        exclude_globs: &[Glob],
         options: Options,
     ) -> WorldState {
         let mut change = AnalysisChange::new();
 
         let mut roots = Vec::new();
         roots.extend(folder_roots.iter().map(|path| {
-            RootEntry::new(
-                path.clone(),
-                RustPackageFilterBuilder::default().set_member(true).into_vfs_filter(),
-            )
+            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| {
-                RootEntry::new(
-                    pkg_root.path().clone(),
-                    RustPackageFilterBuilder::default()
-                        .set_member(pkg_root.is_member())
-                        .into_vfs_filter(),
-                )
+                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())
             }));
         }
 

docs/user/README.md

@@ -71,6 +71,9 @@ See https://github.com/microsoft/vscode/issues/72308[microsoft/vscode#72308] for
 * `rust-analyzer.raLspServerPath`: path to `ra_lsp_server` executable
 * `rust-analyzer.enableCargoWatchOnStartup`: prompt to install & enable `cargo
   watch` for live error highlighting (note, this **does not** use rust-analyzer)
+* `rust-analyzer.excludeGlobs`: a list of glob-patterns for exclusion (see globset [docs](https://docs.rs/globset) for syntax).
+  Note: glob patterns are applied to all Cargo packages and a rooted at a package root.
+  This is not very intuitive and a limitation of a current implementation.
 * `rust-analyzer.cargo-watch.check-arguments`: cargo-watch check arguments.
   (e.g: `--features="shumway,pdf"` will run as `cargo watch -x "check --features="shumway,pdf""` )
 * `rust-analyzer.trace.server`: enables internal logging

editors/code/package.json

@@ -197,6 +197,11 @@
                     ],
                     "description": "Whether to run `cargo watch` on startup"
                 },
+                "rust-analyzer.excludeGlobs": {
+                    "type": "array",
+                    "default": "[]",
+                    "description": "Paths to exclude from analysis"
+                },
                 "rust-analyzer.cargo-watch.arguments": {
                     "type": "string",
                     "description": "`cargo-watch` arguments. (e.g: `--features=\"shumway,pdf\"` will run as `cargo watch -x \"check --features=\"shumway,pdf\"\"` )",

editors/code/src/config.ts

@@ -22,6 +22,7 @@ export class Config {
     public showWorkspaceLoadedNotification = true;
     public lruCapacity: null | number = null;
     public displayInlayHints = true;
+    public excludeGlobs = [];
     public cargoWatchOptions: CargoWatchOptions = {
         enableOnStartup: 'ask',
         trace: 'off',
@@ -128,5 +129,8 @@ export class Config {
         if (config.has('displayInlayHints')) {
             this.displayInlayHints = config.get('displayInlayHints') as boolean;
         }
+        if (config.has('excludeGlobs')) {
+            this.excludeGlobs = config.get('excludeGlobs') || [];
+        }
     }
 }

editors/code/src/server.ts

@@ -36,7 +36,8 @@ export class Server {
                 publishDecorations: true,
                 showWorkspaceLoaded:
                     Server.config.showWorkspaceLoadedNotification,
-                lruCapacity: Server.config.lruCapacity
+                lruCapacity: Server.config.lruCapacity,
+                excludeGlobs: Server.config.excludeGlobs
             },
             traceOutputChannel
         };