4 files changed, 6 insertions, 83 deletions

diff --git a/crates/ra_ide_db/Cargo.toml b/crates/ra_ide_db/Cargo.toml
index 52f0f23df..de4f5bce0 100644
--- a/crates/ra_ide_db/Cargo.toml
+++ b/crates/ra_ide_db/Cargo.toml
@@ -13,7 +13,7 @@ wasm = []
 [dependencies]
 log = "0.4.8"
 rayon = "1.3.0"
-fst = { version = "0.3.5", default-features = false }
+fst = { version = "0.4", default-features = false }
 rustc-hash = "1.1.0"
 superslice = "1.0.0"
 once_cell = "1.3.1"
diff --git a/crates/ra_ide_db/src/feature_flags.rs b/crates/ra_ide_db/src/feature_flags.rs
deleted file mode 100644
index 968415072..000000000
--- a/crates/ra_ide_db/src/feature_flags.rs
+++ /dev/null
@@ -1,73 +0,0 @@
-//! See docs for `FeatureFlags`.
-
-use rustc_hash::FxHashMap;
-
-/// Feature flags hold fine-grained toggles for all *user-visible* features of
-/// rust-analyzer.
-///
-/// The exists such that users are able to disable any annoying feature (and,
-/// with many users and many features,  some features are bound to be annoying
-/// for some users)
-///
-/// Note that we purposefully use run-time checked strings, and not something
-/// checked at compile time, to keep things simple and flexible.
-///
-/// Also note that, at the moment, `FeatureFlags` also store features for
-/// `rust-analyzer`. This should be benign layering violation.
-#[derive(Debug)]
-pub struct FeatureFlags {
-    flags: FxHashMap<String, bool>,
-}
-
-impl FeatureFlags {
-    fn new(flags: &[(&str, bool)]) -> FeatureFlags {
-        let flags = flags
-            .iter()
-            .map(|&(name, value)| {
-                check_flag_name(name);
-                (name.to_string(), value)
-            })
-            .collect();
-        FeatureFlags { flags }
-    }
-
-    pub fn set(&mut self, flag: &str, value: bool) -> Result<(), ()> {
-        match self.flags.get_mut(flag) {
-            None => Err(()),
-            Some(slot) => {
-                *slot = value;
-                Ok(())
-            }
-        }
-    }
-
-    pub fn get(&self, flag: &str) -> bool {
-        match self.flags.get(flag) {
-            None => panic!("unknown flag: {:?}", flag),
-            Some(value) => *value,
-        }
-    }
-}
-
-impl Default for FeatureFlags {
-    fn default() -> FeatureFlags {
-        FeatureFlags::new(&[
-            ("lsp.diagnostics", true),
-            ("completion.insertion.add-call-parenthesis", true),
-            ("completion.insertion.add-argument-snippets", true),
-            ("completion.enable-postfix", true),
-            ("call-info.full", true),
-            ("notifications.workspace-loaded", true),
-            ("notifications.cargo-toml-not-found", true),
-        ])
-    }
-}
-
-fn check_flag_name(flag: &str) {
-    for c in flag.bytes() {
-        match c {
-            b'a'..=b'z' | b'-' | b'.' => (),
-            _ => panic!("flag name does not match conventions: {:?}", flag),
-        }
-    }
-}
diff --git a/crates/ra_ide_db/src/lib.rs b/crates/ra_ide_db/src/lib.rs
index a105c7556..6bcccc848 100644
--- a/crates/ra_ide_db/src/lib.rs
+++ b/crates/ra_ide_db/src/lib.rs
@@ -5,7 +5,6 @@
 pub mod marks;
 pub mod line_index;
 pub mod line_index_utils;
-pub mod feature_flags;
 pub mod symbol_index;
 pub mod change;
 pub mod defs;
@@ -22,7 +21,7 @@ use ra_db::{
 };
 use rustc_hash::FxHashMap;
 
-use crate::{feature_flags::FeatureFlags, line_index::LineIndex, symbol_index::SymbolsDatabase};
+use crate::{line_index::LineIndex, symbol_index::SymbolsDatabase};
 
 #[salsa::database(
     ra_db::SourceDatabaseStorage,
@@ -37,7 +36,6 @@ use crate::{feature_flags::FeatureFlags, line_index::LineIndex, symbol_index::Sy
 #[derive(Debug)]
 pub struct RootDatabase {
     runtime: salsa::Runtime<RootDatabase>,
-    pub feature_flags: Arc<FeatureFlags>,
     pub(crate) debug_data: Arc<DebugData>,
     pub last_gc: crate::wasm_shims::Instant,
     pub last_gc_check: crate::wasm_shims::Instant,
@@ -82,17 +80,16 @@ impl salsa::Database for RootDatabase {
 
 impl Default for RootDatabase {
     fn default() -> RootDatabase {
-        RootDatabase::new(None, FeatureFlags::default())
+        RootDatabase::new(None)
     }
 }
 
 impl RootDatabase {
-    pub fn new(lru_capacity: Option<usize>, feature_flags: FeatureFlags) -> RootDatabase {
+    pub fn new(lru_capacity: Option<usize>) -> RootDatabase {
         let mut db = RootDatabase {
             runtime: salsa::Runtime::default(),
             last_gc: crate::wasm_shims::Instant::now(),
             last_gc_check: crate::wasm_shims::Instant::now(),
-            feature_flags: Arc::new(feature_flags),
             debug_data: Default::default(),
         };
         db.set_crate_graph_with_durability(Default::default(), Durability::HIGH);
@@ -112,7 +109,6 @@ impl salsa::ParallelDatabase for RootDatabase {
             runtime: self.runtime.snapshot(self),
             last_gc: self.last_gc,
             last_gc_check: self.last_gc_check,
-            feature_flags: Arc::clone(&self.feature_flags),
             debug_data: Arc::clone(&self.debug_data),
         })
     }
diff --git a/crates/ra_ide_db/src/symbol_index.rs b/crates/ra_ide_db/src/symbol_index.rs
index e6b3126b6..884359ee3 100644
--- a/crates/ra_ide_db/src/symbol_index.rs
+++ b/crates/ra_ide_db/src/symbol_index.rs
@@ -163,7 +163,7 @@ pub fn index_resolve(db: &RootDatabase, name_ref: &ast::NameRef) -> Vec<FileSymb
 #[derive(Default)]
 pub struct SymbolIndex {
     symbols: Vec<FileSymbol>,
-    map: fst::Map,
+    map: fst::Map<Vec<u8>>,
 }
 
 impl fmt::Debug for SymbolIndex {
@@ -221,7 +221,7 @@ impl SymbolIndex {
             builder.insert(key, value).unwrap();
         }
 
-        let map = fst::Map::from_bytes(builder.into_inner().unwrap()).unwrap();
+        let map = fst::Map::new(builder.into_inner().unwrap()).unwrap();
         SymbolIndex { symbols, map }
     }