62 files changed, 1654 insertions, 472 deletions

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 633015956..ee74d7486 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     - run: cargo install cargo-audit
     - run: cargo audit
@@ -37,7 +37,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     # We need to disable the existing toolchain to avoid updating rust-docs
     # which takes a long time. The fastest way to do this is to rename the
@@ -94,7 +94,7 @@ jobs:
       CC: gcc-4.9
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     - name: Install Nodejs
       uses: actions/setup-node@v1
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index d58be0fd7..0434b6128 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -23,7 +23,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     # We need to disable the existing toolchain to avoid updating rust-docs
     # which takes a long time. The fastest way to do this is to rename the
@@ -42,6 +42,7 @@ jobs:
         override: true
 
     - name: Install Nodejs
+      if: matrix.os == 'ubuntu-latest'
       uses: actions/setup-node@v1
       with:
         node-version: 12.x
@@ -70,14 +71,14 @@ jobs:
       with:
         node-version: 12.x
 
-    - run: echo "::set-env name=TAG::$(date --iso)"
+    - run: echo "::set-env name=TAG::$(date --iso --utc)"
       if: github.event_name == 'push'
     - run: echo "::set-env name=TAG::nightly"
       if: github.event_name == 'schedule'
     - run: 'echo "TAG: $TAG"'
 
     - name: Checkout repository
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     - uses: actions/download-artifact@v1
       with:
@@ -107,4 +108,4 @@ jobs:
       if: github.event_name == 'push'
       working-directory: ./editors/code
       # token from https://dev.azure.com/rust-analyzer/
-      run: npx vsce publish 0.1.$(date +%Y%m%d) --pat ${{ secrets.MARKETPLACE_TOKEN }} --packagePath ../../dist/rust-analyzer.vsix
+      run: npx vsce publish --pat ${{ secrets.MARKETPLACE_TOKEN }} --packagePath ../../dist/rust-analyzer.vsix
diff --git a/.github/workflows/rustdoc.yaml b/.github/workflows/rustdoc.yaml
index e75e92695..c84ce5d48 100644
--- a/.github/workflows/rustdoc.yaml
+++ b/.github/workflows/rustdoc.yaml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     - name: Install Rust toolchain
       uses: actions-rs/toolchain@v1
diff --git a/Cargo.lock b/Cargo.lock
index 80e778bcf..330bdd1cb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,9 +2,9 @@
 # It is not intended for manual editing.
 [[package]]
 name = "aho-corasick"
-version = "0.7.9"
+version = "0.7.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5e63fd144e18ba274ae7095c0197a870a7b9468abc801dd62f190d80817d2ec"
+checksum = "8716408b8bc624ed7f65d223ddb9ac2d044c0547b6fa4b0d554f3a9540496ada"
 dependencies = [
  "memchr",
 ]
@@ -88,21 +88,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "byteorder"
-version = "1.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
-
-[[package]]
-name = "c2-chacha"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "214238caa1bf3a496ec3392968969cab8549f96ff30652c9e56885329315f6bb"
-dependencies = [
- "ppv-lite86",
-]
-
-[[package]]
 name = "cargo_metadata"
 version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -213,15 +198,14 @@ dependencies = [
 
 [[package]]
 name = "console"
-version = "0.9.2"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45e0f3986890b3acbc782009e2629dfe2baa430ac091519ce3be26164a2ae6c0"
+checksum = "6728a28023f207181b193262711102bfbaf47cc9d13bc71d0736607ef8efe88c"
 dependencies = [
  "clicolors-control",
  "encode_unicode",
  "lazy_static",
  "libc",
- "regex",
  "termios",
  "winapi 0.3.8",
 ]
@@ -402,12 +386,9 @@ dependencies = [
 
 [[package]]
 name = "fst"
-version = "0.3.5"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "927fb434ff9f0115b215dc0efd2e4fbdd7448522a92a1aa37c77d6a2f8f1ebd6"
-dependencies = [
- "byteorder",
-]
+checksum = "3f7c13470d799474d44e2b9c6a0925807def7af4d120cd4de761433be76f7579"
 
 [[package]]
 name = "fuchsia-zircon"
@@ -509,9 +490,9 @@ dependencies = [
 
 [[package]]
 name = "insta"
-version = "0.13.1"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8df742abee84dbf27d20869c9adf77b0d8f7ea3eead13c2c9e3998d136a97058"
+checksum = "8de3f029212a3fe78a6090f1f2b993877ca245a9ded863f3fcbd6eae084fc1ed"
 dependencies = [
  "console",
  "difference",
@@ -655,9 +636,9 @@ dependencies = [
 
 [[package]]
 name = "lsp-types"
-version = "0.72.0"
+version = "0.73.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "face91691e558746745dc9dc6c67a4e2a24e044926e274d8378e6f19659329f0"
+checksum = "93d0cf64ea141b43d9e055f6b9df13f0bce32b103d84237509ce0a571ab9b159"
 dependencies = [
  "base64",
  "bitflags",
@@ -960,6 +941,7 @@ name = "ra_hir"
 version = "0.1.0"
 dependencies = [
  "either",
+ "itertools",
  "log",
  "ra_db",
  "ra_hir_def",
@@ -1180,11 +1162,11 @@ dependencies = [
 
 [[package]]
 name = "rand_chacha"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03a2a90da8c7523f554344f921aa97283eadf6ac484a6d2a7d0212fa7f8d6853"
+checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 dependencies = [
- "c2-chacha",
+ "ppv-lite86",
  "rand_core",
 ]
 
diff --git a/crates/ra_cargo_watch/Cargo.toml b/crates/ra_cargo_watch/Cargo.toml
index 731d50371..741345a21 100644
--- a/crates/ra_cargo_watch/Cargo.toml
+++ b/crates/ra_cargo_watch/Cargo.toml
@@ -6,10 +6,10 @@ authors = ["rust-analyzer developers"]
 
 [dependencies]
 crossbeam-channel = "0.4.0"
-lsp-types = { version = "0.72.0", features = ["proposed"] }
+lsp-types = { version = "0.73.0", features = ["proposed"] }
 log = "0.4.8"
 cargo_metadata = "0.9.1"
 serde_json = "1.0.48"
 
 [dev-dependencies]
-insta = "0.13.1"
+insta = "0.15.0"
diff --git a/crates/ra_db/src/fixture.rs b/crates/ra_db/src/fixture.rs
index da7af110c..947d6ad56 100644
--- a/crates/ra_db/src/fixture.rs
+++ b/crates/ra_db/src/fixture.rs
@@ -56,6 +56,7 @@ fn with_single_file(db: &mut dyn SourceDatabaseExt, text: &str) -> FileId {
     crate_graph.add_crate_root(
         file_id,
         Edition::Edition2018,
+        None,
         CfgOptions::default(),
         Env::default(),
     );
@@ -98,8 +99,13 @@ fn with_files(db: &mut dyn SourceDatabaseExt, fixture: &str) -> Option<FilePosit
         assert!(meta.path.starts_with(&source_root_prefix));
 
         if let Some(krate) = meta.krate {
-            let crate_id =
-                crate_graph.add_crate_root(file_id, meta.edition, meta.cfg, Env::default());
+            let crate_id = crate_graph.add_crate_root(
+                file_id,
+                meta.edition,
+                Some(krate.clone()),
+                meta.cfg,
+                Env::default(),
+            );
             let prev = crates.insert(krate.clone(), crate_id);
             assert!(prev.is_none());
             for dep in meta.deps {
@@ -132,6 +138,7 @@ fn with_files(db: &mut dyn SourceDatabaseExt, fixture: &str) -> Option<FilePosit
         crate_graph.add_crate_root(
             crate_root,
             Edition::Edition2018,
+            None,
             CfgOptions::default(),
             Env::default(),
         );
diff --git a/crates/ra_db/src/input.rs b/crates/ra_db/src/input.rs
index eaff99fd3..b77640b2b 100644
--- a/crates/ra_db/src/input.rs
+++ b/crates/ra_db/src/input.rs
@@ -6,7 +6,7 @@
 //! actual IO. See `vfs` and `project_model` in the `rust-analyzer` crate for how
 //! actual IO is done and lowered to input.
 
-use std::{fmt, str::FromStr};
+use std::{fmt, ops, str::FromStr};
 
 use ra_cfg::CfgOptions;
 use ra_syntax::SmolStr;
@@ -86,7 +86,7 @@ pub struct CrateId(pub u32);
 pub struct CrateName(SmolStr);
 
 impl CrateName {
-    /// Crates a crate name, checking for dashes in the string provided.
+    /// Creates a crate name, checking for dashes in the string provided.
     /// Dashes are not allowed in the crate names,
     /// hence the input string is returned as `Err` for those cases.
     pub fn new(name: &str) -> Result<CrateName, &str> {
@@ -97,19 +97,23 @@ impl CrateName {
         }
     }
 
-    /// Crates a crate name, unconditionally replacing the dashes with underscores.
+    /// Creates a crate name, unconditionally replacing the dashes with underscores.
     pub fn normalize_dashes(name: &str) -> CrateName {
         Self(SmolStr::new(name.replace('-', "_")))
     }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
-struct CrateData {
-    file_id: FileId,
-    edition: Edition,
-    cfg_options: CfgOptions,
-    env: Env,
-    dependencies: Vec<Dependency>,
+pub struct CrateData {
+    pub root_file_id: FileId,
+    pub edition: Edition,
+    /// The name to display to the end user.
+    /// This actual crate name can be different in a particular dependent crate
+    /// or may even be missing for some cases, such as a dummy crate for the code snippet.
+    pub display_name: Option<String>,
+    pub cfg_options: CfgOptions,
+    pub env: Env,
+    pub dependencies: Vec<Dependency>,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
@@ -134,20 +138,24 @@ impl CrateGraph {
         &mut self,
         file_id: FileId,
         edition: Edition,
+        display_name: Option<String>,
         cfg_options: CfgOptions,
         env: Env,
     ) -> CrateId {
-        let data = CrateData::new(file_id, edition, cfg_options, env);
+        let data = CrateData {
+            root_file_id: file_id,
+            edition,
+            display_name,
+            cfg_options,
+            env,
+            dependencies: Vec::new(),
+        };
         let crate_id = CrateId(self.arena.len() as u32);
         let prev = self.arena.insert(crate_id, data);
         assert!(prev.is_none());
         crate_id
     }
 
-    pub fn cfg_options(&self, crate_id: CrateId) -> &CfgOptions {
-        &self.arena[&crate_id].cfg_options
-    }
-
     pub fn add_dep(
         &mut self,
         from: CrateId,
@@ -169,24 +177,13 @@ impl CrateGraph {
         self.arena.keys().copied()
     }
 
-    pub fn crate_root(&self, crate_id: CrateId) -> FileId {
-        self.arena[&crate_id].file_id
-    }
-
-    pub fn edition(&self, crate_id: CrateId) -> Edition {
-        self.arena[&crate_id].edition
-    }
-
     // FIXME: this only finds one crate with the given root; we could have multiple
     pub fn crate_id_for_crate_root(&self, file_id: FileId) -> Option<CrateId> {
-        let (&crate_id, _) = self.arena.iter().find(|(_crate_id, data)| data.file_id == file_id)?;
+        let (&crate_id, _) =
+            self.arena.iter().find(|(_crate_id, data)| data.root_file_id == file_id)?;
         Some(crate_id)
     }
 
-    pub fn dependencies(&self, crate_id: CrateId) -> impl Iterator<Item = &Dependency> {
-        self.arena[&crate_id].dependencies.iter()
-    }
-
     /// Extends this crate graph by adding a complete disjoint second crate
     /// graph.
     ///
@@ -209,8 +206,8 @@ impl CrateGraph {
             return false;
         }
 
-        for dep in self.dependencies(from) {
-            let crate_id = dep.crate_id();
+        for dep in &self[from].dependencies {
+            let crate_id = dep.crate_id;
             if crate_id == target {
                 return true;
             }
@@ -223,6 +220,13 @@ impl CrateGraph {
     }
 }
 
+impl ops::Index<CrateId> for CrateGraph {
+    type Output = CrateData;
+    fn index(&self, crate_id: CrateId) -> &CrateData {
+        &self.arena[&crate_id]
+    }
+}
+
 impl CrateId {
     pub fn shift(self, amount: u32) -> CrateId {
         CrateId(self.0 + amount)
@@ -230,10 +234,6 @@ impl CrateId {
 }
 
 impl CrateData {
-    fn new(file_id: FileId, edition: Edition, cfg_options: CfgOptions, env: Env) -> CrateData {
-        CrateData { file_id, edition, dependencies: Vec::new(), cfg_options, env }
-    }
-
     fn add_dep(&mut self, name: SmolStr, crate_id: CrateId) {
         self.dependencies.push(Dependency { name, crate_id })
     }
@@ -261,12 +261,6 @@ impl fmt::Display for Edition {
     }
 }
 
-impl Dependency {
-    pub fn crate_id(&self) -> CrateId {
-        self.crate_id
-    }
-}
-
 #[derive(Debug)]
 pub struct ParseEditionError {
     invalid_input: String,
@@ -290,12 +284,27 @@ mod tests {
     #[test]
     fn it_should_panic_because_of_cycle_dependencies() {
         let mut graph = CrateGraph::default();
-        let crate1 =
-            graph.add_crate_root(FileId(1u32), Edition2018, CfgOptions::default(), Env::default());
-        let crate2 =
-            graph.add_crate_root(FileId(2u32), Edition2018, CfgOptions::default(), Env::default());
-        let crate3 =
-            graph.add_crate_root(FileId(3u32), Edition2018, CfgOptions::default(), Env::default());
+        let crate1 = graph.add_crate_root(
+            FileId(1u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
+        let crate2 = graph.add_crate_root(
+            FileId(2u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
+        let crate3 = graph.add_crate_root(
+            FileId(3u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
         assert!(graph.add_dep(crate1, CrateName::new("crate2").unwrap(), crate2).is_ok());
         assert!(graph.add_dep(crate2, CrateName::new("crate3").unwrap(), crate3).is_ok());
         assert!(graph.add_dep(crate3, CrateName::new("crate1").unwrap(), crate1).is_err());
@@ -304,12 +313,27 @@ mod tests {
     #[test]
     fn it_works() {
         let mut graph = CrateGraph::default();
-        let crate1 =
-            graph.add_crate_root(FileId(1u32), Edition2018, CfgOptions::default(), Env::default());
-        let crate2 =
-            graph.add_crate_root(FileId(2u32), Edition2018, CfgOptions::default(), Env::default());
-        let crate3 =
-            graph.add_crate_root(FileId(3u32), Edition2018, CfgOptions::default(), Env::default());
+        let crate1 = graph.add_crate_root(
+            FileId(1u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
+        let crate2 = graph.add_crate_root(
+            FileId(2u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
+        let crate3 = graph.add_crate_root(
+            FileId(3u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
         assert!(graph.add_dep(crate1, CrateName::new("crate2").unwrap(), crate2).is_ok());
         assert!(graph.add_dep(crate2, CrateName::new("crate3").unwrap(), crate3).is_ok());
     }
@@ -317,16 +341,26 @@ mod tests {
     #[test]
     fn dashes_are_normalized() {
         let mut graph = CrateGraph::default();
-        let crate1 =
-            graph.add_crate_root(FileId(1u32), Edition2018, CfgOptions::default(), Env::default());
-        let crate2 =
-            graph.add_crate_root(FileId(2u32), Edition2018, CfgOptions::default(), Env::default());
+        let crate1 = graph.add_crate_root(
+            FileId(1u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
+        let crate2 = graph.add_crate_root(
+            FileId(2u32),
+            Edition2018,
+            None,
+            CfgOptions::default(),
+            Env::default(),
+        );
         assert!(graph
             .add_dep(crate1, CrateName::normalize_dashes("crate-name-with-dashes"), crate2)
             .is_ok());
         assert_eq!(
-            graph.dependencies(crate1).collect::<Vec<_>>(),
-            vec![&Dependency { crate_id: crate2, name: "crate_name_with_dashes".into() }]
+            graph[crate1].dependencies,
+            vec![Dependency { crate_id: crate2, name: "crate_name_with_dashes".into() }]
         );
     }
 }
diff --git a/crates/ra_hir/Cargo.toml b/crates/ra_hir/Cargo.toml
index 0555a0de7..266c4cff3 100644
--- a/crates/ra_hir/Cargo.toml
+++ b/crates/ra_hir/Cargo.toml
@@ -12,6 +12,8 @@ log = "0.4.8"
 rustc-hash = "1.1.0"
 either = "1.5.3"
 
+itertools = "0.8.2"
+
 ra_syntax = { path = "../ra_syntax" }
 ra_db = { path = "../ra_db" }
 ra_prof = { path = "../ra_prof" }
diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index 2944926e6..41d4e2ed3 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -54,10 +54,11 @@ pub struct CrateDependency {
 
 impl Crate {
     pub fn dependencies(self, db: &impl DefDatabase) -> Vec<CrateDependency> {
-        db.crate_graph()
-            .dependencies(self.id)
+        db.crate_graph()[self.id]
+            .dependencies
+            .iter()
             .map(|dep| {
-                let krate = Crate { id: dep.crate_id() };
+                let krate = Crate { id: dep.crate_id };
                 let name = dep.as_name();
                 CrateDependency { krate, name }
             })
@@ -69,7 +70,9 @@ impl Crate {
         let crate_graph = db.crate_graph();
         crate_graph
             .iter()
-            .filter(|&krate| crate_graph.dependencies(krate).any(|it| it.crate_id == self.id))
+            .filter(|&krate| {
+                crate_graph[krate].dependencies.iter().any(|it| it.crate_id == self.id)
+            })
             .map(|id| Crate { id })
             .collect()
     }
@@ -80,12 +83,11 @@ impl Crate {
     }
 
     pub fn root_file(self, db: &impl DefDatabase) -> FileId {
-        db.crate_graph().crate_root(self.id)
+        db.crate_graph()[self.id].root_file_id
     }
 
     pub fn edition(self, db: &impl DefDatabase) -> Edition {
-        let crate_graph = db.crate_graph();
-        crate_graph.edition(self.id)
+        db.crate_graph()[self.id].edition
     }
 
     pub fn all(db: &impl DefDatabase) -> Vec<Crate> {
@@ -204,10 +206,26 @@ impl Module {
     }
 
     /// Returns a `ModuleScope`: a set of items, visible in this module.
-    pub fn scope(self, db: &impl HirDatabase) -> Vec<(Name, ScopeDef)> {
+    pub fn scope(
+        self,
+        db: &impl HirDatabase,
+        visible_from: Option<Module>,
+    ) -> Vec<(Name, ScopeDef)> {
         db.crate_def_map(self.id.krate)[self.id.local_id]
             .scope
             .entries()
+            .filter_map(|(name, def)| {
+                if let Some(m) = visible_from {
+                    let filtered = def.filter_visibility(|vis| vis.is_visible_from(db, m.id));
+                    if filtered.is_none() && !def.is_none() {
+                        None
+                    } else {
+                        Some((name, filtered))
+                    }
+                } else {
+                    Some((name, def))
+                }
+            })
             .map(|(name, def)| (name.clone(), def.into()))
             .collect()
     }
@@ -480,6 +498,14 @@ impl Adt {
     pub fn krate(self, db: &impl HirDatabase) -> Option<Crate> {
         Some(self.module(db).krate())
     }
+
+    pub fn name(&self, db: &impl HirDatabase) -> Name {
+        match self {
+            Adt::Struct(s) => s.name(db),
+            Adt::Union(u) => u.name(db),
+            Adt::Enum(e) => e.name(db),
+        }
+    }
 }
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
@@ -507,6 +533,14 @@ impl VariantDef {
         }
     }
 
+    pub fn name(&self, db: &impl HirDatabase) -> Name {
+        match self {
+            VariantDef::Struct(s) => s.name(db),
+            VariantDef::Union(u) => u.name(db),
+            VariantDef::EnumVariant(e) => e.name(db),
+        }
+    }
+
     pub(crate) fn variant_data(self, db: &impl DefDatabase) -> Arc<VariantData> {
         match self {
             VariantDef::Struct(it) => it.variant_data(db),
@@ -534,6 +568,14 @@ impl DefWithBody {
             DefWithBody::Static(s) => s.module(db),
         }
     }
+
+    pub fn name(self, db: &impl HirDatabase) -> Option<Name> {
+        match self {
+            DefWithBody::Function(f) => Some(f.name(db)),
+            DefWithBody::Static(s) => s.name(db),
+            DefWithBody::Const(c) => c.name(db),
+        }
+    }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
@@ -571,6 +613,14 @@ impl Function {
     }
 }
 
+impl HasVisibility for Function {
+    fn visibility(&self, db: &impl HirDatabase) -> Visibility {
+        let function_data = db.function_data(self.id);
+        let visibility = &function_data.visibility;
+        visibility.resolve(db, &self.id.resolver(db))
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct Const {
     pub(crate) id: ConstId,
@@ -590,6 +640,14 @@ impl Const {
     }
 }
 
+impl HasVisibility for Const {
+    fn visibility(&self, db: &impl HirDatabase) -> Visibility {
+        let function_data = db.const_data(self.id);
+        let visibility = &function_data.visibility;
+        visibility.resolve(db, &self.id.resolver(db))
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct Static {
     pub(crate) id: StaticId,
@@ -664,6 +722,14 @@ impl TypeAlias {
     }
 }
 
+impl HasVisibility for TypeAlias {
+    fn visibility(&self, db: &impl HirDatabase) -> Visibility {
+        let function_data = db.type_alias_data(self.id);
+        let visibility = &function_data.visibility;
+        visibility.resolve(db, &self.id.resolver(db))
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct MacroDef {
     pub(crate) id: MacroDefId,
@@ -751,6 +817,16 @@ impl AssocItem {
     }
 }
 
+impl HasVisibility for AssocItem {
+    fn visibility(&self, db: &impl HirDatabase) -> Visibility {
+        match self {
+            AssocItem::Function(f) => f.visibility(db),
+            AssocItem::Const(c) => c.visibility(db),
+            AssocItem::TypeAlias(t) => t.visibility(db),
+        }
+    }
+}
+
 #[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
 pub enum GenericDef {
     Function(Function),
diff --git a/crates/ra_hir/src/semantics.rs b/crates/ra_hir/src/semantics.rs
index 965d185a4..3782a9984 100644
--- a/crates/ra_hir/src/semantics.rs
+++ b/crates/ra_hir/src/semantics.rs
@@ -6,7 +6,7 @@ use std::{cell::RefCell, fmt, iter::successors};
 
 use hir_def::{
     resolver::{self, HasResolver, Resolver},
-    TraitId,
+    AsMacroCall, TraitId,
 };
 use hir_expand::ExpansionInfo;
 use ra_db::{FileId, FileRange};
@@ -70,6 +70,20 @@ impl<'db, DB: HirDatabase> Semantics<'db, DB> {
         Some(node)
     }
 
+    pub fn expand_hypothetical(
+        &self,
+        actual_macro_call: &ast::MacroCall,
+        hypothetical_args: &ast::TokenTree,
+        token_to_map: SyntaxToken,
+    ) -> Option<(SyntaxNode, SyntaxToken)> {
+        let macro_call =
+            self.find_file(actual_macro_call.syntax().clone()).with_value(actual_macro_call);
+        let sa = self.analyze2(macro_call.map(|it| it.syntax()), None);
+        let macro_call_id = macro_call
+            .as_call_id(self.db, |path| sa.resolver.resolve_path_as_macro(self.db, &path))?;
+        hir_expand::db::expand_hypothetical(self.db, macro_call_id, hypothetical_args, token_to_map)
+    }
+
     pub fn descend_into_macros(&self, token: SyntaxToken) -> SyntaxToken {
         let parent = token.parent();
         let parent = self.find_file(parent);
@@ -104,6 +118,25 @@ impl<'db, DB: HirDatabase> Semantics<'db, DB> {
         node.ancestors_with_macros(self.db).map(|it| it.value)
     }
 
+    pub fn ancestors_at_offset_with_macros(
+        &self,
+        node: &SyntaxNode,
+        offset: TextUnit,
+    ) -> impl Iterator<Item = SyntaxNode> + '_ {
+        use itertools::Itertools;
+        node.token_at_offset(offset)
+            .map(|token| self.ancestors_with_macros(token.parent()))
+            .kmerge_by(|node1, node2| node1.text_range().len() < node2.text_range().len())
+    }
+
+    pub fn find_node_at_offset_with_macros<N: AstNode>(
+        &self,
+        node: &SyntaxNode,
+        offset: TextUnit,
+    ) -> Option<N> {
+        self.ancestors_at_offset_with_macros(node, offset).find_map(N::cast)
+    }
+
     pub fn type_of_expr(&self, expr: &ast::Expr) -> Option<Type> {
         self.analyze(expr.syntax()).type_of(self.db, &expr)
     }
diff --git a/crates/ra_hir_def/Cargo.toml b/crates/ra_hir_def/Cargo.toml
index fa25cc4fb..30a12337e 100644
--- a/crates/ra_hir_def/Cargo.toml
+++ b/crates/ra_hir_def/Cargo.toml
@@ -26,4 +26,4 @@ ra_cfg = { path = "../ra_cfg" }
 tt = { path = "../ra_tt", package = "ra_tt" }
 
 [dev-dependencies]
-insta = "0.13.1"
+insta = "0.15.0"
diff --git a/crates/ra_hir_def/src/data.rs b/crates/ra_hir_def/src/data.rs
index 9fc43f3fb..a72eb5369 100644
--- a/crates/ra_hir_def/src/data.rs
+++ b/crates/ra_hir_def/src/data.rs
@@ -7,13 +7,16 @@ use hir_expand::{
     AstId, InFile,
 };
 use ra_prof::profile;
-use ra_syntax::ast::{self, AstNode, ImplItem, ModuleItemOwner, NameOwner, TypeAscriptionOwner};
+use ra_syntax::ast::{
+    self, AstNode, ImplItem, ModuleItemOwner, NameOwner, TypeAscriptionOwner, VisibilityOwner,
+};
 
 use crate::{
     db::DefDatabase,
     path::{path, GenericArgs, Path},
     src::HasSource,
     type_ref::{Mutability, TypeBound, TypeRef},
+    visibility::RawVisibility,
     AssocContainerId, AssocItemId, ConstId, ConstLoc, Expander, FunctionId, FunctionLoc, HasModule,
     ImplId, Intern, Lookup, ModuleId, StaticId, TraitId, TypeAliasId, TypeAliasLoc,
 };
@@ -26,6 +29,7 @@ pub struct FunctionData {
     /// True if the first param is `self`. This is relevant to decide whether this
     /// can be called as a method.
     pub has_self_param: bool,
+    pub visibility: RawVisibility,
 }
 
 impl FunctionData {
@@ -72,7 +76,9 @@ impl FunctionData {
             ret_type
         };
 
-        let sig = FunctionData { name, params, ret_type, has_self_param };
+        let visibility = RawVisibility::from_ast(db, src.map(|s| s.visibility()));
+
+        let sig = FunctionData { name, params, ret_type, has_self_param, visibility };
         Arc::new(sig)
     }
 }
@@ -91,6 +97,7 @@ fn desugar_future_path(orig: TypeRef) -> Path {
 pub struct TypeAliasData {
     pub name: Name,
     pub type_ref: Option<TypeRef>,
+    pub visibility: RawVisibility,
 }
 
 impl TypeAliasData {
@@ -98,10 +105,11 @@ impl TypeAliasData {
         db: &impl DefDatabase,
         typ: TypeAliasId,
     ) -> Arc<TypeAliasData> {
-        let node = typ.lookup(db).source(db).value;
-        let name = node.name().map_or_else(Name::missing, |n| n.as_name());
-        let type_ref = node.type_ref().map(TypeRef::from_ast);
-        Arc::new(TypeAliasData { name, type_ref })
+        let node = typ.lookup(db).source(db);
+        let name = node.value.name().map_or_else(Name::missing, |n| n.as_name());
+        let type_ref = node.value.type_ref().map(TypeRef::from_ast);
+        let visibility = RawVisibility::from_ast(db, node.map(|n| n.visibility()));
+        Arc::new(TypeAliasData { name, type_ref, visibility })
     }
 }
 
@@ -217,23 +225,28 @@ pub struct ConstData {
     /// const _: () = ();
     pub name: Option<Name>,
     pub type_ref: TypeRef,
+    pub visibility: RawVisibility,
 }
 
 impl ConstData {
     pub(crate) fn const_data_query(db: &impl DefDatabase, konst: ConstId) -> Arc<ConstData> {
-        let node = konst.lookup(db).source(db).value;
-        Arc::new(ConstData::new(&node))
+        let node = konst.lookup(db).source(db);
+        Arc::new(ConstData::new(db, node))
     }
 
     pub(crate) fn static_data_query(db: &impl DefDatabase, konst: StaticId) -> Arc<ConstData> {
-        let node = konst.lookup(db).source(db).value;
-        Arc::new(ConstData::new(&node))
+        let node = konst.lookup(db).source(db);
+        Arc::new(ConstData::new(db, node))
     }
 
-    fn new<N: NameOwner + TypeAscriptionOwner>(node: &N) -> ConstData {
-        let name = node.name().map(|n| n.as_name());
-        let type_ref = TypeRef::from_ast_opt(node.ascribed_type());
-        ConstData { name, type_ref }
+    fn new<N: NameOwner + TypeAscriptionOwner + VisibilityOwner>(
+        db: &impl DefDatabase,
+        node: InFile<N>,
+    ) -> ConstData {
+        let name = node.value.name().map(|n| n.as_name());
+        let type_ref = TypeRef::from_ast_opt(node.value.ascribed_type());
+        let visibility = RawVisibility::from_ast(db, node.map(|n| n.visibility()));
+        ConstData { name, type_ref, visibility }
     }
 }
 
diff --git a/crates/ra_hir_def/src/find_path.rs b/crates/ra_hir_def/src/find_path.rs
index 43b9b124a..07ca74ec3 100644
--- a/crates/ra_hir_def/src/find_path.rs
+++ b/crates/ra_hir_def/src/find_path.rs
@@ -176,7 +176,7 @@ fn find_importable_locations(
     // directly (only through reexports in direct dependencies).
     for krate in Some(from.krate)
         .into_iter()
-        .chain(crate_graph.dependencies(from.krate).map(|dep| dep.crate_id))
+        .chain(crate_graph[from.krate].dependencies.iter().map(|dep| dep.crate_id))
     {
         result.extend(
             importable_locations_in_crate(db, item, krate)
diff --git a/crates/ra_hir_def/src/lang_item.rs b/crates/ra_hir_def/src/lang_item.rs
index 5a336ea1f..6de49730e 100644
--- a/crates/ra_hir_def/src/lang_item.rs
+++ b/crates/ra_hir_def/src/lang_item.rs
@@ -116,8 +116,9 @@ impl LangItems {
         if let Some(target) = start_crate_target {
             return Some(*target);
         }
-        db.crate_graph()
-            .dependencies(start_crate)
+        db.crate_graph()[start_crate]
+            .dependencies
+            .iter()
             .find_map(|dep| db.lang_item(dep.crate_id, item.clone()))
     }
 
diff --git a/crates/ra_hir_def/src/nameres.rs b/crates/ra_hir_def/src/nameres.rs
index 628c44c99..81eac52ad 100644
--- a/crates/ra_hir_def/src/nameres.rs
+++ b/crates/ra_hir_def/src/nameres.rs
@@ -177,10 +177,10 @@ pub struct ModuleData {
 
 impl CrateDefMap {
     pub(crate) fn crate_def_map_query(db: &impl DefDatabase, krate: CrateId) -> Arc<CrateDefMap> {
-        let _p = profile("crate_def_map_query");
+        let _p = profile("crate_def_map_query")
+            .detail(|| db.crate_graph()[krate].display_name.clone().unwrap_or_default());
         let def_map = {
-            let crate_graph = db.crate_graph();
-            let edition = crate_graph.edition(krate);
+            let edition = db.crate_graph()[krate].edition;
             let mut modules: Arena<LocalModuleId, ModuleData> = Arena::default();
             let root = modules.alloc(ModuleData::default());
             CrateDefMap {
diff --git a/crates/ra_hir_def/src/nameres/collector.rs b/crates/ra_hir_def/src/nameres/collector.rs
index 51c65a5d7..d0459d9b0 100644
--- a/crates/ra_hir_def/src/nameres/collector.rs
+++ b/crates/ra_hir_def/src/nameres/collector.rs
@@ -34,7 +34,7 @@ pub(super) fn collect_defs(db: &impl DefDatabase, mut def_map: CrateDefMap) -> C
     let crate_graph = db.crate_graph();
 
     // populate external prelude
-    for dep in crate_graph.dependencies(def_map.krate) {
+    for dep in &crate_graph[def_map.krate].dependencies {
         let dep_def_map = db.crate_def_map(dep.crate_id);
         log::debug!("crate dep {:?} -> {:?}", dep.name, dep.crate_id);
         def_map.extern_prelude.insert(
@@ -51,7 +51,7 @@ pub(super) fn collect_defs(db: &impl DefDatabase, mut def_map: CrateDefMap) -> C
         }
     }
 
-    let cfg_options = crate_graph.cfg_options(def_map.krate);
+    let cfg_options = &crate_graph[def_map.krate].cfg_options;
 
     let mut collector = DefCollector {
         db,
@@ -128,8 +128,7 @@ where
     DB: DefDatabase,
 {
     fn collect(&mut self) {
-        let crate_graph = self.db.crate_graph();
-        let file_id = crate_graph.crate_root(self.def_map.krate);
+        let file_id = self.db.crate_graph()[self.def_map.krate].root_file_id;
         let raw_items = self.db.raw_items(file_id.into());
         let module_id = self.def_map.root;
         self.def_map.modules[module_id].origin = ModuleOrigin::CrateRoot { definition: file_id };
@@ -955,7 +954,7 @@ mod tests {
         let krate = db.test_crate();
 
         let def_map = {
-            let edition = db.crate_graph().edition(krate);
+            let edition = db.crate_graph()[krate].edition;
             let mut modules: Arena<LocalModuleId, ModuleData> = Arena::default();
             let root = modules.alloc(ModuleData::default());
             CrateDefMap {
diff --git a/crates/ra_hir_expand/src/builtin_macro.rs b/crates/ra_hir_expand/src/builtin_macro.rs
index 9fc33e4b1..3f60b1cca 100644
--- a/crates/ra_hir_expand/src/builtin_macro.rs
+++ b/crates/ra_hir_expand/src/builtin_macro.rs
@@ -7,6 +7,7 @@ use crate::{
 
 use crate::{quote, EagerMacroId, LazyMacroId, MacroCallId};
 use either::Either;
+use mbe::parse_to_token_tree;
 use ra_db::{FileId, RelativePath};
 use ra_parser::FragmentKind;
 
@@ -142,7 +143,10 @@ fn env_expand(
     _tt: &tt::Subtree,
 ) -> Result<tt::Subtree, mbe::ExpandError> {
     // dummy implementation for type-checking purposes
-    let expanded = quote! { "" };
+    // we cannot use an empty string here, because for
+    // `include!(concat!(env!("OUT_DIR"), "/foo.rs"))` will become
+    // `include!("foo.rs"), which maybe infinite loop
+    let expanded = quote! { "__RA_UNIMPLEMENTATED__" };
 
     Ok(expanded)
 }
@@ -276,7 +280,12 @@ fn relative_file(db: &dyn AstDatabase, call_id: MacroCallId, path: &str) -> Opti
     let call_site = call_id.as_file().original_file(db);
     let path = RelativePath::new(&path);
 
-    db.resolve_relative_path(call_site, &path)
+    let res = db.resolve_relative_path(call_site, &path)?;
+    // Prevent include itself
+    if res == call_site {
+        return None;
+    }
+    Some(res)
 }
 
 fn include_expand(
@@ -298,10 +307,9 @@ fn include_expand(
 
     // FIXME:
     // Handle include as expression
-    let node =
-        db.parse_or_expand(file_id.into()).ok_or_else(|| mbe::ExpandError::ConversionError)?;
-    let res =
-        mbe::syntax_node_to_token_tree(&node).ok_or_else(|| mbe::ExpandError::ConversionError)?.0;
+    let res = parse_to_token_tree(&db.file_text(file_id.into()))
+        .ok_or_else(|| mbe::ExpandError::ConversionError)?
+        .0;
 
     Ok((res, FragmentKind::Items))
 }
@@ -394,7 +402,7 @@ mod tests {
             "#,
         );
 
-        assert_eq!(expanded, "\"\"");
+        assert_eq!(expanded, "\"__RA_UNIMPLEMENTATED__\"");
     }
 
     #[test]
diff --git a/crates/ra_hir_expand/src/db.rs b/crates/ra_hir_expand/src/db.rs
index f3a84cacc..29dde3d80 100644
--- a/crates/ra_hir_expand/src/db.rs
+++ b/crates/ra_hir_expand/src/db.rs
@@ -72,6 +72,30 @@ pub trait AstDatabase: SourceDatabase {
     fn intern_eager_expansion(&self, eager: EagerCallLoc) -> EagerMacroId;
 }
 
+/// This expands the given macro call, but with different arguments. This is
+/// used for completion, where we want to see what 'would happen' if we insert a
+/// token. The `token_to_map` mapped down into the expansion, with the mapped
+/// token returned.
+pub fn expand_hypothetical(
+    db: &impl AstDatabase,
+    actual_macro_call: MacroCallId,
+    hypothetical_args: &ra_syntax::ast::TokenTree,
+    token_to_map: ra_syntax::SyntaxToken,
+) -> Option<(SyntaxNode, ra_syntax::SyntaxToken)> {
+    let macro_file = MacroFile { macro_call_id: actual_macro_call };
+    let (tt, tmap_1) = mbe::syntax_node_to_token_tree(hypothetical_args.syntax()).unwrap();
+    let range =
+        token_to_map.text_range().checked_sub(hypothetical_args.syntax().text_range().start())?;
+    let token_id = tmap_1.token_by_range(range)?;
+    let macro_def = expander(db, actual_macro_call)?;
+    let (node, tmap_2) =
+        parse_macro_with_arg(db, macro_file, Some(std::sync::Arc::new((tt, tmap_1))))?;
+    let token_id = macro_def.0.map_id_down(token_id);
+    let range = tmap_2.range_by_token(token_id)?.by_kind(token_to_map.kind())?;
+    let token = ra_syntax::algo::find_covering_element(&node.syntax_node(), range).into_token()?;
+    Some((node.syntax_node(), token))
+}
+
 pub(crate) fn ast_id_map(db: &dyn AstDatabase, file_id: HirFileId) -> Arc<AstIdMap> {
     let map =
         db.parse_or_expand(file_id).map_or_else(AstIdMap::default, |it| AstIdMap::from_source(&it));
@@ -130,15 +154,42 @@ pub(crate) fn macro_expand(
     db: &dyn AstDatabase,
     id: MacroCallId,
 ) -> Result<Arc<tt::Subtree>, String> {
+    macro_expand_with_arg(db, id, None)
+}
+
+fn expander(db: &dyn AstDatabase, id: MacroCallId) -> Option<Arc<(TokenExpander, mbe::TokenMap)>> {
+    let lazy_id = match id {
+        MacroCallId::LazyMacro(id) => id,
+        MacroCallId::EagerMacro(_id) => {
+            return None;
+        }
+    };
+
+    let loc = db.lookup_intern_macro(lazy_id);
+    let macro_rules = db.macro_def(loc.def)?;
+    Some(macro_rules)
+}
+
+fn macro_expand_with_arg(
+    db: &dyn AstDatabase,
+    id: MacroCallId,
+    arg: Option<Arc<(tt::Subtree, mbe::TokenMap)>>,
+) -> Result<Arc<tt::Subtree>, String> {
     let lazy_id = match id {
         MacroCallId::LazyMacro(id) => id,
         MacroCallId::EagerMacro(id) => {
-            return Ok(db.lookup_intern_eager_expansion(id).subtree);
+            if arg.is_some() {
+                return Err(
+                    "hypothetical macro expansion not implemented for eager macro".to_owned()
+                );
+            } else {
+                return Ok(db.lookup_intern_eager_expansion(id).subtree);
+            }
         }
     };
 
     let loc = db.lookup_intern_macro(lazy_id);
-    let macro_arg = db.macro_arg(id).ok_or("Fail to args in to tt::TokenTree")?;
+    let macro_arg = arg.or_else(|| db.macro_arg(id)).ok_or("Fail to args in to tt::TokenTree")?;
 
     let macro_rules = db.macro_def(loc.def).ok_or("Fail to find macro definition")?;
     let tt = macro_rules.0.expand(db, lazy_id, &macro_arg.0).map_err(|err| format!("{:?}", err))?;
@@ -163,11 +214,23 @@ pub(crate) fn parse_macro(
     db: &dyn AstDatabase,
     macro_file: MacroFile,
 ) -> Option<(Parse<SyntaxNode>, Arc<mbe::TokenMap>)> {
+    parse_macro_with_arg(db, macro_file, None)
+}
+
+pub fn parse_macro_with_arg(
+    db: &dyn AstDatabase,
+    macro_file: MacroFile,
+    arg: Option<Arc<(tt::Subtree, mbe::TokenMap)>>,
+) -> Option<(Parse<SyntaxNode>, Arc<mbe::TokenMap>)> {
     let _p = profile("parse_macro_query");
 
     let macro_call_id = macro_file.macro_call_id;
-    let tt = db
-        .macro_expand(macro_call_id)
+    let expansion = if let Some(arg) = arg {
+        macro_expand_with_arg(db, macro_call_id, Some(arg))
+    } else {
+        db.macro_expand(macro_call_id)
+    };
+    let tt = expansion
         .map_err(|err| {
             // Note:
             // The final goal we would like to make all parse_macro success,
diff --git a/crates/ra_hir_ty/Cargo.toml b/crates/ra_hir_ty/Cargo.toml
index f2558b579..9962112db 100644
--- a/crates/ra_hir_ty/Cargo.toml
+++ b/crates/ra_hir_ty/Cargo.toml
@@ -26,4 +26,4 @@ chalk-rust-ir = { git = "https://github.com/rust-lang/chalk.git", rev = "177d713
 chalk-ir =      { git = "https://github.com/rust-lang/chalk.git", rev = "177d71340acc7a7204a33115fc63075d86452179" }
 
 [dev-dependencies]
-insta = "0.13.1"
+insta = "0.15.0"
diff --git a/crates/ra_hir_ty/src/tests/macros.rs b/crates/ra_hir_ty/src/tests/macros.rs
index 42814941f..ffa78b046 100644
--- a/crates/ra_hir_ty/src/tests/macros.rs
+++ b/crates/ra_hir_ty/src/tests/macros.rs
@@ -484,6 +484,51 @@ fn bar() -> u32 {0}
 }
 
 #[test]
+fn infer_builtin_macros_include_concat_with_bad_env_should_failed() {
+    let (db, pos) = TestDB::with_position(
+        r#"
+//- /main.rs 
+#[rustc_builtin_macro]
+macro_rules! include {() => {}}
+
+#[rustc_builtin_macro]
+macro_rules! concat {() => {}}
+
+#[rustc_builtin_macro]
+macro_rules! env {() => {}}
+
+include!(concat!(env!("OUT_DIR"), "/foo.rs"));
+
+fn main() {
+    bar()<|>;
+}
+
+//- /foo.rs
+fn bar() -> u32 {0}
+"#,
+    );
+    assert_eq!("{unknown}", type_at_pos(&db, pos));
+}
+
+#[test]
+fn infer_builtin_macros_include_itself_should_failed() {
+    let (db, pos) = TestDB::with_position(
+        r#"
+//- /main.rs 
+#[rustc_builtin_macro]
+macro_rules! include {() => {}}
+
+include!("main.rs");
+
+fn main() {
+    0<|>
+}
+"#,
+    );
+    assert_eq!("i32", type_at_pos(&db, pos));
+}
+
+#[test]
 fn infer_builtin_macros_concat_with_lazy() {
     assert_snapshot!(
         infer(r#"
diff --git a/crates/ra_hir_ty/src/traits.rs b/crates/ra_hir_ty/src/traits.rs
index 8de588790..6e1c8e42a 100644
--- a/crates/ra_hir_ty/src/traits.rs
+++ b/crates/ra_hir_ty/src/traits.rs
@@ -47,7 +47,7 @@ pub(crate) fn impls_for_trait_query(
     // will only ever get called for a few crates near the root of the tree (the
     // ones the user is editing), so this may actually be a waste of memory. I'm
     // doing it like this mainly for simplicity for now.
-    for dep in db.crate_graph().dependencies(krate) {
+    for dep in &db.crate_graph()[krate].dependencies {
         impls.extend(db.impls_for_trait(dep.crate_id, trait_).iter());
     }
     let crate_impl_defs = db.impls_in_crate(krate);
diff --git a/crates/ra_ide/Cargo.toml b/crates/ra_ide/Cargo.toml
index 410d8de62..7235c944c 100644
--- a/crates/ra_ide/Cargo.toml
+++ b/crates/ra_ide/Cargo.toml
@@ -35,4 +35,4 @@ ra_assists = { path = "../ra_assists" }
 hir = { path = "../ra_hir", package = "ra_hir" }
 
 [dev-dependencies]
-insta = "0.13.1"
+insta = "0.15.0"
diff --git a/crates/ra_ide/src/completion/complete_dot.rs b/crates/ra_ide/src/completion/complete_dot.rs
index 9145aa183..f275305e2 100644
--- a/crates/ra_ide/src/completion/complete_dot.rs
+++ b/crates/ra_ide/src/completion/complete_dot.rs
@@ -38,7 +38,7 @@ pub(super) fn complete_dot(acc: &mut Completions, ctx: &CompletionContext) {
 fn complete_fields(acc: &mut Completions, ctx: &CompletionContext, receiver: &Type) {
     for receiver in receiver.autoderef(ctx.db) {
         for (field, ty) in receiver.fields(ctx.db) {
-            if ctx.module.map_or(false, |m| !field.is_visible_from(ctx.db, m)) {
+            if ctx.scope().module().map_or(false, |m| !field.is_visible_from(ctx.db, m)) {
                 // Skip private field. FIXME: If the definition location of the
                 // field is editable, we should show the completion
                 continue;
@@ -53,11 +53,14 @@ fn complete_fields(acc: &mut Completions, ctx: &CompletionContext, receiver: &Ty
 }
 
 fn complete_methods(acc: &mut Completions, ctx: &CompletionContext, receiver: &Type) {
-    if let Some(krate) = ctx.module.map(|it| it.krate()) {
+    if let Some(krate) = ctx.krate {
         let mut seen_methods = FxHashSet::default();
         let traits_in_scope = ctx.scope().traits_in_scope();
         receiver.iterate_method_candidates(ctx.db, krate, &traits_in_scope, None, |_ty, func| {
-            if func.has_self_param(ctx.db) && seen_methods.insert(func.name(ctx.db)) {
+            if func.has_self_param(ctx.db)
+                && ctx.scope().module().map_or(true, |m| func.is_visible_from(ctx.db, m))
+                && seen_methods.insert(func.name(ctx.db))
+            {
                 acc.add_function(ctx, func);
             }
             None::<()>
@@ -308,6 +311,39 @@ mod tests {
     }
 
     #[test]
+    fn test_method_completion_private() {
+        assert_debug_snapshot!(
+            do_ref_completion(
+                r"
+            struct A {}
+            mod m {
+                impl super::A {
+                    fn private_method(&self) {}
+                    pub(super) fn the_method(&self) {}
+                }
+            }
+            fn foo(a: A) {
+               a.<|>
+            }
+            ",
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "the_method()",
+                source_range: [256; 256),
+                delete: [256; 256),
+                insert: "the_method()$0",
+                kind: Method,
+                lookup: "the_method",
+                detail: "pub(super) fn the_method(&self)",
+            },
+        ]
+        "###
+        );
+    }
+
+    #[test]
     fn test_trait_method_completion() {
         assert_debug_snapshot!(
             do_ref_completion(
@@ -584,4 +620,102 @@ mod tests {
         "###
         );
     }
+
+    #[test]
+    fn works_in_simple_macro_1() {
+        assert_debug_snapshot!(
+            do_ref_completion(
+                r"
+                macro_rules! m { ($e:expr) => { $e } }
+                struct A { the_field: u32 }
+                fn foo(a: A) {
+                    m!(a.x<|>)
+                }
+                ",
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "the_field",
+                source_range: [156; 157),
+                delete: [156; 157),
+                insert: "the_field",
+                kind: Field,
+                detail: "u32",
+            },
+        ]
+        "###
+        );
+    }
+
+    #[test]
+    fn works_in_simple_macro_recursive() {
+        assert_debug_snapshot!(
+            do_ref_completion(
+                r"
+                macro_rules! m { ($e:expr) => { $e } }
+                struct A { the_field: u32 }
+                fn foo(a: A) {
+                    m!(a.x<|>)
+                }
+                ",
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "the_field",
+                source_range: [156; 157),
+                delete: [156; 157),
+                insert: "the_field",
+                kind: Field,
+                detail: "u32",
+            },
+        ]
+        "###
+        );
+    }
+
+    #[test]
+    fn works_in_simple_macro_2() {
+        // this doesn't work yet because the macro doesn't expand without the token -- maybe it can be fixed with better recovery
+        assert_debug_snapshot!(
+            do_ref_completion(
+                r"
+                macro_rules! m { ($e:expr) => { $e } }
+                struct A { the_field: u32 }
+                fn foo(a: A) {
+                    m!(a.<|>)
+                }
+                ",
+            ),
+            @r###"[]"###
+        );
+    }
+
+    #[test]
+    fn works_in_simple_macro_recursive_1() {
+        assert_debug_snapshot!(
+            do_ref_completion(
+                r"
+                macro_rules! m { ($e:expr) => { $e } }
+                struct A { the_field: u32 }
+                fn foo(a: A) {
+                    m!(m!(m!(a.x<|>)))
+                }
+                ",
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "the_field",
+                source_range: [162; 163),
+                delete: [162; 163),
+                insert: "the_field",
+                kind: Field,
+                detail: "u32",
+            },
+        ]
+        "###
+        );
+    }
 }
diff --git a/crates/ra_ide/src/completion/complete_keyword.rs b/crates/ra_ide/src/completion/complete_keyword.rs
index eb7cd9ac2..e1c0ffb1f 100644
--- a/crates/ra_ide/src/completion/complete_keyword.rs
+++ b/crates/ra_ide/src/completion/complete_keyword.rs
@@ -79,6 +79,7 @@ pub(super) fn complete_expr_keyword(acc: &mut Completions, ctx: &CompletionConte
 }
 
 fn is_in_loop_body(leaf: &SyntaxToken) -> bool {
+    // FIXME move this to CompletionContext and make it handle macros
     for node in leaf.parent().ancestors() {
         if node.kind() == FN_DEF || node.kind() == LAMBDA_EXPR {
             break;
diff --git a/crates/ra_ide/src/completion/complete_path.rs b/crates/ra_ide/src/completion/complete_path.rs
index 1a9699466..3c4a70561 100644
--- a/crates/ra_ide/src/completion/complete_path.rs
+++ b/crates/ra_ide/src/completion/complete_path.rs
@@ -1,6 +1,6 @@
-//! Completion of paths, including when writing a single name.
+//! Completion of paths, i.e. `some::prefix::<|>`.
 
-use hir::{Adt, PathResolution, ScopeDef};
+use hir::{Adt, HasVisibility, PathResolution, ScopeDef};
 use ra_syntax::AstNode;
 use test_utils::tested_by;
 
@@ -15,9 +15,10 @@ pub(super) fn complete_path(acc: &mut Completions, ctx: &CompletionContext) {
         Some(PathResolution::Def(def)) => def,
         _ => return,
     };
+    let context_module = ctx.scope().module();
     match def {
         hir::ModuleDef::Module(module) => {
-            let module_scope = module.scope(ctx.db);
+            let module_scope = module.scope(ctx.db, context_module);
             for (name, def) in module_scope {
                 if ctx.use_item_syntax.is_some() {
                     if let ScopeDef::Unknown = def {
@@ -47,10 +48,13 @@ pub(super) fn complete_path(acc: &mut Completions, ctx: &CompletionContext) {
             };
             // Iterate assoc types separately
             // FIXME: complete T::AssocType
-            let krate = ctx.module.map(|m| m.krate());
+            let krate = ctx.krate;
             if let Some(krate) = krate {
                 let traits_in_scope = ctx.scope().traits_in_scope();
                 ty.iterate_path_candidates(ctx.db, krate, &traits_in_scope, None, |_ty, item| {
+                    if context_module.map_or(false, |m| !item.is_visible_from(ctx.db, m)) {
+                        return None;
+                    }
                     match item {
                         hir::AssocItem::Function(func) => {
                             if !func.has_self_param(ctx.db) {
@@ -64,6 +68,9 @@ pub(super) fn complete_path(acc: &mut Completions, ctx: &CompletionContext) {
                 });
 
                 ty.iterate_impl_items(ctx.db, krate, |item| {
+                    if context_module.map_or(false, |m| !item.is_visible_from(ctx.db, m)) {
+                        return None;
+                    }
                     match item {
                         hir::AssocItem::Function(_) | hir::AssocItem::Const(_) => {}
                         hir::AssocItem::TypeAlias(ty) => acc.add_type_alias(ctx, ty),
@@ -74,6 +81,9 @@ pub(super) fn complete_path(acc: &mut Completions, ctx: &CompletionContext) {
         }
         hir::ModuleDef::Trait(t) => {
             for item in t.items(ctx.db) {
+                if context_module.map_or(false, |m| !item.is_visible_from(ctx.db, m)) {
+                    continue;
+                }
                 match item {
                     hir::AssocItem::Function(func) => {
                         if !func.has_self_param(ctx.db) {
@@ -170,6 +180,41 @@ mod tests {
     }
 
     #[test]
+    fn path_visibility() {
+        assert_debug_snapshot!(
+            do_reference_completion(
+                r"
+                use self::my::<|>;
+
+                mod my {
+                    struct Bar;
+                    pub struct Foo;
+                    pub use Bar as PublicBar;
+                }
+                "
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "Foo",
+                source_range: [31; 31),
+                delete: [31; 31),
+                insert: "Foo",
+                kind: Struct,
+            },
+            CompletionItem {
+                label: "PublicBar",
+                source_range: [31; 31),
+                delete: [31; 31),
+                insert: "PublicBar",
+                kind: Struct,
+            },
+        ]
+        "###
+        );
+    }
+
+    #[test]
     fn completes_use_item_starting_with_self() {
         assert_debug_snapshot!(
             do_reference_completion(
@@ -177,7 +222,7 @@ mod tests {
                 use self::m::<|>;
 
                 mod m {
-                    struct Bar;
+                    pub struct Bar;
                 }
                 "
             ),
@@ -502,6 +547,60 @@ mod tests {
     }
 
     #[test]
+    fn associated_item_visibility() {
+        assert_debug_snapshot!(
+            do_reference_completion(
+                "
+                //- /lib.rs
+                struct S;
+
+                mod m {
+                    impl super::S {
+                        pub(super) fn public_method() { }
+                        fn private_method() { }
+                        pub(super) type PublicType = u32;
+                        type PrivateType = u32;
+                        pub(super) const PUBLIC_CONST: u32 = 1;
+                        const PRIVATE_CONST: u32 = 1;
+                    }
+                }
+
+                fn foo() { let _ = S::<|> }
+                "
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "PUBLIC_CONST",
+                source_range: [302; 302),
+                delete: [302; 302),
+                insert: "PUBLIC_CONST",
+                kind: Const,
+                detail: "pub(super) const PUBLIC_CONST: u32 = 1;",
+            },
+            CompletionItem {
+                label: "PublicType",
+                source_range: [302; 302),
+                delete: [302; 302),
+                insert: "PublicType",
+                kind: TypeAlias,
+                detail: "pub(super) type PublicType = u32;",
+            },
+            CompletionItem {
+                label: "public_method()",
+                source_range: [302; 302),
+                delete: [302; 302),
+                insert: "public_method()$0",
+                kind: Function,
+                lookup: "public_method",
+                detail: "pub(super) fn public_method()",
+            },
+        ]
+        "###
+        );
+    }
+
+    #[test]
     fn completes_enum_associated_method() {
         assert_debug_snapshot!(
             do_reference_completion(
@@ -835,4 +934,37 @@ mod tests {
         "###
         );
     }
+
+    #[test]
+    fn completes_in_simple_macro_call() {
+        let completions = do_reference_completion(
+            r#"
+                macro_rules! m { ($e:expr) => { $e } }
+                fn main() { m!(self::f<|>); }
+                fn foo() {}
+            "#,
+        );
+        assert_debug_snapshot!(completions, @r###"
+        [
+            CompletionItem {
+                label: "foo()",
+                source_range: [93; 94),
+                delete: [93; 94),
+                insert: "foo()$0",
+                kind: Function,
+                lookup: "foo",
+                detail: "fn foo()",
+            },
+            CompletionItem {
+                label: "main()",
+                source_range: [93; 94),
+                delete: [93; 94),
+                insert: "main()$0",
+                kind: Function,
+                lookup: "main",
+                detail: "fn main()",
+            },
+        ]
+        "###);
+    }
 }
diff --git a/crates/ra_ide/src/completion/complete_pattern.rs b/crates/ra_ide/src/completion/complete_pattern.rs
index c2c6ca002..fa8aeceda 100644
--- a/crates/ra_ide/src/completion/complete_pattern.rs
+++ b/crates/ra_ide/src/completion/complete_pattern.rs
@@ -86,4 +86,22 @@ mod tests {
         ]
         "###);
     }
+
+    #[test]
+    fn completes_in_simple_macro_call() {
+        // FIXME: doesn't work yet because of missing error recovery in macro expansion
+        let completions = complete(
+            r"
+            macro_rules! m { ($e:expr) => { $e } }
+            enum E { X }
+
+            fn foo() {
+               m!(match E::X {
+                   <|>
+               })
+            }
+            ",
+        );
+        assert_debug_snapshot!(completions, @r###"[]"###);
+    }
 }
diff --git a/crates/ra_ide/src/completion/complete_postfix.rs b/crates/ra_ide/src/completion/complete_postfix.rs
index 8a74f993a..65ecea125 100644
--- a/crates/ra_ide/src/completion/complete_postfix.rs
+++ b/crates/ra_ide/src/completion/complete_postfix.rs
@@ -67,8 +67,8 @@ pub(super) fn complete_postfix(acc: &mut Completions, ctx: &CompletionContext) {
 
 fn postfix_snippet(ctx: &CompletionContext, label: &str, detail: &str, snippet: &str) -> Builder {
     let edit = {
-        let receiver_range =
-            ctx.dot_receiver.as_ref().expect("no receiver available").syntax().text_range();
+        let receiver_syntax = ctx.dot_receiver.as_ref().expect("no receiver available").syntax();
+        let receiver_range = ctx.sema.original_range(receiver_syntax).range;
         let delete_range = TextRange::from_to(receiver_range.start(), ctx.source_range().end());
         TextEdit::replace(delete_range, snippet.to_string())
     };
@@ -279,4 +279,65 @@ mod tests {
         "###
         );
     }
+
+    #[test]
+    fn works_in_simple_macro() {
+        assert_debug_snapshot!(
+            do_postfix_completion(
+                r#"
+                macro_rules! m { ($e:expr) => { $e } }
+                fn main() {
+                    let bar: u8 = 12;
+                    m!(bar.b<|>)
+                }
+                "#,
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "box",
+                source_range: [149; 150),
+                delete: [145; 150),
+                insert: "Box::new(bar)",
+                detail: "Box::new(expr)",
+            },
+            CompletionItem {
+                label: "dbg",
+                source_range: [149; 150),
+                delete: [145; 150),
+                insert: "dbg!(bar)",
+                detail: "dbg!(expr)",
+            },
+            CompletionItem {
+                label: "match",
+                source_range: [149; 150),
+                delete: [145; 150),
+                insert: "match bar {\n    ${1:_} => {$0\\},\n}",
+                detail: "match expr {}",
+            },
+            CompletionItem {
+                label: "not",
+                source_range: [149; 150),
+                delete: [145; 150),
+                insert: "!bar",
+                detail: "!expr",
+            },
+            CompletionItem {
+                label: "ref",
+                source_range: [149; 150),
+                delete: [145; 150),
+                insert: "&bar",
+                detail: "&expr",
+            },
+            CompletionItem {
+                label: "refm",
+                source_range: [149; 150),
+                delete: [145; 150),
+                insert: "&mut bar",
+                detail: "&mut expr",
+            },
+        ]
+        "###
+        );
+    }
 }
diff --git a/crates/ra_ide/src/completion/complete_record_literal.rs b/crates/ra_ide/src/completion/complete_record_literal.rs
index f98353d76..be6e4194f 100644
--- a/crates/ra_ide/src/completion/complete_record_literal.rs
+++ b/crates/ra_ide/src/completion/complete_record_literal.rs
@@ -153,4 +153,29 @@ mod tests {
         ]
         "###);
     }
+
+    #[test]
+    fn test_record_literal_field_in_simple_macro() {
+        let completions = complete(
+            r"
+            macro_rules! m { ($e:expr) => { $e } }
+            struct A { the_field: u32 }
+            fn foo() {
+               m!(A { the<|> })
+            }
+            ",
+        );
+        assert_debug_snapshot!(completions, @r###"
+        [
+            CompletionItem {
+                label: "the_field",
+                source_range: [137; 140),
+                delete: [137; 140),
+                insert: "the_field",
+                kind: Field,
+                detail: "u32",
+            },
+        ]
+        "###);
+    }
 }
diff --git a/crates/ra_ide/src/completion/complete_record_pattern.rs b/crates/ra_ide/src/completion/complete_record_pattern.rs
index 9bdeae49f..687c57d3e 100644
--- a/crates/ra_ide/src/completion/complete_record_pattern.rs
+++ b/crates/ra_ide/src/completion/complete_record_pattern.rs
@@ -87,4 +87,32 @@ mod tests {
         ]
         "###);
     }
+
+    #[test]
+    fn test_record_pattern_field_in_simple_macro() {
+        let completions = complete(
+            r"
+            macro_rules! m { ($e:expr) => { $e } }
+            struct S { foo: u32 }
+
+            fn process(f: S) {
+                m!(match f {
+                    S { f<|>: 92 } => (),
+                })
+            }
+            ",
+        );
+        assert_debug_snapshot!(completions, @r###"
+        [
+            CompletionItem {
+                label: "foo",
+                source_range: [171; 172),
+                delete: [171; 172),
+                insert: "foo",
+                kind: Field,
+                detail: "u32",
+            },
+        ]
+        "###);
+    }
 }
diff --git a/crates/ra_ide/src/completion/complete_scope.rs b/crates/ra_ide/src/completion/complete_scope.rs
index 2b9a0e556..eb3c8cf1b 100644
--- a/crates/ra_ide/src/completion/complete_scope.rs
+++ b/crates/ra_ide/src/completion/complete_scope.rs
@@ -1,4 +1,4 @@
-//! FIXME: write short doc here
+//! Completion of names from the current scope, e.g. locals and imported items.
 
 use crate::completion::{CompletionContext, Completions};
 
@@ -797,4 +797,72 @@ mod tests {
         "###
         )
     }
+
+    #[test]
+    fn completes_in_simple_macro_1() {
+        assert_debug_snapshot!(
+            do_reference_completion(
+                r"
+                macro_rules! m { ($e:expr) => { $e } }
+                fn quux(x: i32) {
+                    let y = 92;
+                    m!(<|>);
+                }
+                "
+            ),
+            @"[]"
+        );
+    }
+
+    #[test]
+    fn completes_in_simple_macro_2() {
+        assert_debug_snapshot!(
+            do_reference_completion(
+                r"
+                macro_rules! m { ($e:expr) => { $e } }
+                fn quux(x: i32) {
+                    let y = 92;
+                    m!(x<|>);
+                }
+                "
+            ),
+            @r###"
+        [
+            CompletionItem {
+                label: "m!",
+                source_range: [145; 146),
+                delete: [145; 146),
+                insert: "m!($0)",
+                kind: Macro,
+                detail: "macro_rules! m",
+            },
+            CompletionItem {
+                label: "quux(…)",
+                source_range: [145; 146),
+                delete: [145; 146),
+                insert: "quux(${1:x})$0",
+                kind: Function,
+                lookup: "quux",
+                detail: "fn quux(x: i32)",
+            },
+            CompletionItem {
+                label: "x",
+                source_range: [145; 146),
+                delete: [145; 146),
+                insert: "x",
+                kind: Binding,
+                detail: "i32",
+            },
+            CompletionItem {
+                label: "y",
+                source_range: [145; 146),
+                delete: [145; 146),
+                insert: "y",
+                kind: Binding,
+                detail: "i32",
+            },
+        ]
+        "###
+        );
+    }
 }
diff --git a/crates/ra_ide/src/completion/completion_context.rs b/crates/ra_ide/src/completion/completion_context.rs
index 9aa5a705d..40535c09e 100644
--- a/crates/ra_ide/src/completion/completion_context.rs
+++ b/crates/ra_ide/src/completion/completion_context.rs
@@ -5,7 +5,7 @@ use ra_db::SourceDatabase;
 use ra_ide_db::RootDatabase;
 use ra_syntax::{
     algo::{find_covering_element, find_node_at_offset},
-    ast, AstNode, SourceFile,
+    ast, AstNode,
     SyntaxKind::*,
     SyntaxNode, SyntaxToken, TextRange, TextUnit,
 };
@@ -20,8 +20,11 @@ pub(crate) struct CompletionContext<'a> {
     pub(super) sema: Semantics<'a, RootDatabase>,
     pub(super) db: &'a RootDatabase,
     pub(super) offset: TextUnit,
+    /// The token before the cursor, in the original file.
+    pub(super) original_token: SyntaxToken,
+    /// The token before the cursor, in the macro-expanded file.
     pub(super) token: SyntaxToken,
-    pub(super) module: Option<hir::Module>,
+    pub(super) krate: Option<hir::Crate>,
     pub(super) name_ref_syntax: Option<ast::NameRef>,
     pub(super) function_syntax: Option<ast::FnDef>,
     pub(super) use_item_syntax: Option<ast::UseItem>,
@@ -67,15 +70,20 @@ impl<'a> CompletionContext<'a> {
             let edit = AtomTextEdit::insert(position.offset, "intellijRulezz".to_string());
             parse.reparse(&edit).tree()
         };
+        let fake_ident_token =
+            file_with_fake_ident.syntax().token_at_offset(position.offset).right_biased().unwrap();
 
-        let module = sema.to_module_def(position.file_id);
-        let token = original_file.syntax().token_at_offset(position.offset).left_biased()?;
+        let krate = sema.to_module_def(position.file_id).map(|m| m.krate());
+        let original_token =
+            original_file.syntax().token_at_offset(position.offset).left_biased()?;
+        let token = sema.descend_into_macros(original_token.clone());
         let mut ctx = CompletionContext {
             sema,
             db,
+            original_token,
             token,
             offset: position.offset,
-            module,
+            krate,
             name_ref_syntax: None,
             function_syntax: None,
             use_item_syntax: None,
@@ -95,15 +103,57 @@ impl<'a> CompletionContext<'a> {
             has_type_args: false,
             dot_receiver_is_ambiguous_float_literal: false,
         };
-        ctx.fill(&original_file, file_with_fake_ident, position.offset);
+
+        let mut original_file = original_file.syntax().clone();
+        let mut hypothetical_file = file_with_fake_ident.syntax().clone();
+        let mut offset = position.offset;
+        let mut fake_ident_token = fake_ident_token;
+
+        // Are we inside a macro call?
+        while let (Some(actual_macro_call), Some(macro_call_with_fake_ident)) = (
+            find_node_at_offset::<ast::MacroCall>(&original_file, offset),
+            find_node_at_offset::<ast::MacroCall>(&hypothetical_file, offset),
+        ) {
+            if actual_macro_call.path().as_ref().map(|s| s.syntax().text())
+                != macro_call_with_fake_ident.path().as_ref().map(|s| s.syntax().text())
+            {
+                break;
+            }
+            let hypothetical_args = match macro_call_with_fake_ident.token_tree() {
+                Some(tt) => tt,
+                None => break,
+            };
+            if let (Some(actual_expansion), Some(hypothetical_expansion)) = (
+                ctx.sema.expand(&actual_macro_call),
+                ctx.sema.expand_hypothetical(
+                    &actual_macro_call,
+                    &hypothetical_args,
+                    fake_ident_token,
+                ),
+            ) {
+                let new_offset = hypothetical_expansion.1.text_range().start();
+                if new_offset >= actual_expansion.text_range().end() {
+                    break;
+                }
+                original_file = actual_expansion;
+                hypothetical_file = hypothetical_expansion.0;
+                fake_ident_token = hypothetical_expansion.1;
+                offset = new_offset;
+            } else {
+                break;
+            }
+        }
+
+        ctx.fill(&original_file, hypothetical_file, offset);
         Some(ctx)
     }
 
     // The range of the identifier that is being completed.
     pub(crate) fn source_range(&self) -> TextRange {
+        // check kind of macro-expanded token, but use range of original token
         match self.token.kind() {
             // workaroud when completion is triggered by trigger characters.
-            IDENT => self.token.text_range(),
+            IDENT => self.original_token.text_range(),
             _ => TextRange::offset_len(self.offset, 0.into()),
         }
     }
@@ -114,27 +164,24 @@ impl<'a> CompletionContext<'a> {
 
     fn fill(
         &mut self,
-        original_file: &ast::SourceFile,
-        file_with_fake_ident: ast::SourceFile,
+        original_file: &SyntaxNode,
+        file_with_fake_ident: SyntaxNode,
         offset: TextUnit,
     ) {
         // First, let's try to complete a reference to some declaration.
-        if let Some(name_ref) =
-            find_node_at_offset::<ast::NameRef>(file_with_fake_ident.syntax(), offset)
-        {
+        if let Some(name_ref) = find_node_at_offset::<ast::NameRef>(&file_with_fake_ident, offset) {
             // Special case, `trait T { fn foo(i_am_a_name_ref) {} }`.
             // See RFC#1685.
             if is_node::<ast::Param>(name_ref.syntax()) {
                 self.is_param = true;
                 return;
             }
-            self.classify_name_ref(original_file, name_ref);
+            self.classify_name_ref(original_file, name_ref, offset);
         }
 
         // Otherwise, see if this is a declaration. We can use heuristics to
         // suggest declaration names, see `CompletionKind::Magic`.
-        if let Some(name) = find_node_at_offset::<ast::Name>(file_with_fake_ident.syntax(), offset)
-        {
+        if let Some(name) = find_node_at_offset::<ast::Name>(&file_with_fake_ident, offset) {
             if let Some(bind_pat) = name.syntax().ancestors().find_map(ast::BindPat::cast) {
                 let parent = bind_pat.syntax().parent();
                 if parent.clone().and_then(ast::MatchArm::cast).is_some()
@@ -148,23 +195,29 @@ impl<'a> CompletionContext<'a> {
                 return;
             }
             if name.syntax().ancestors().find_map(ast::RecordFieldPatList::cast).is_some() {
-                self.record_lit_pat = find_node_at_offset(original_file.syntax(), self.offset);
+                self.record_lit_pat =
+                    self.sema.find_node_at_offset_with_macros(&original_file, offset);
             }
         }
     }
 
-    fn classify_name_ref(&mut self, original_file: &SourceFile, name_ref: ast::NameRef) {
+    fn classify_name_ref(
+        &mut self,
+        original_file: &SyntaxNode,
+        name_ref: ast::NameRef,
+        offset: TextUnit,
+    ) {
         self.name_ref_syntax =
-            find_node_at_offset(original_file.syntax(), name_ref.syntax().text_range().start());
+            find_node_at_offset(&original_file, name_ref.syntax().text_range().start());
         let name_range = name_ref.syntax().text_range();
         if name_ref.syntax().parent().and_then(ast::RecordField::cast).is_some() {
-            self.record_lit_syntax = find_node_at_offset(original_file.syntax(), self.offset);
+            self.record_lit_syntax =
+                self.sema.find_node_at_offset_with_macros(&original_file, offset);
         }
 
         self.impl_def = self
-            .token
-            .parent()
-            .ancestors()
+            .sema
+            .ancestors_with_macros(self.token.parent())
             .take_while(|it| it.kind() != SOURCE_FILE && it.kind() != MODULE)
             .find_map(ast::ImplDef::cast);
 
@@ -183,12 +236,12 @@ impl<'a> CompletionContext<'a> {
             _ => (),
         }
 
-        self.use_item_syntax = self.token.parent().ancestors().find_map(ast::UseItem::cast);
+        self.use_item_syntax =
+            self.sema.ancestors_with_macros(self.token.parent()).find_map(ast::UseItem::cast);
 
         self.function_syntax = self
-            .token
-            .parent()
-            .ancestors()
+            .sema
+            .ancestors_with_macros(self.token.parent())
             .take_while(|it| it.kind() != SOURCE_FILE && it.kind() != MODULE)
             .find_map(ast::FnDef::cast);
 
@@ -242,7 +295,7 @@ impl<'a> CompletionContext<'a> {
 
                 if let Some(off) = name_ref.syntax().text_range().start().checked_sub(2.into()) {
                     if let Some(if_expr) =
-                        find_node_at_offset::<ast::IfExpr>(original_file.syntax(), off)
+                        self.sema.find_node_at_offset_with_macros::<ast::IfExpr>(original_file, off)
                     {
                         if if_expr.syntax().text_range().end()
                             < name_ref.syntax().text_range().start()
@@ -259,7 +312,7 @@ impl<'a> CompletionContext<'a> {
             self.dot_receiver = field_expr
                 .expr()
                 .map(|e| e.syntax().text_range())
-                .and_then(|r| find_node_with_range(original_file.syntax(), r));
+                .and_then(|r| find_node_with_range(original_file, r));
             self.dot_receiver_is_ambiguous_float_literal =
                 if let Some(ast::Expr::Literal(l)) = &self.dot_receiver {
                     match l.kind() {
@@ -275,7 +328,7 @@ impl<'a> CompletionContext<'a> {
             self.dot_receiver = method_call_expr
                 .expr()
                 .map(|e| e.syntax().text_range())
-                .and_then(|r| find_node_with_range(original_file.syntax(), r));
+                .and_then(|r| find_node_with_range(original_file, r));
             self.is_call = true;
         }
     }
diff --git a/crates/ra_ide/src/display.rs b/crates/ra_ide/src/display.rs
index 1c26a8697..eaeaaa2b4 100644
--- a/crates/ra_ide/src/display.rs
+++ b/crates/ra_ide/src/display.rs
@@ -68,17 +68,23 @@ pub(crate) fn macro_label(node: &ast::MacroCall) -> String {
 }
 
 pub(crate) fn rust_code_markup<CODE: AsRef<str>>(val: CODE) -> String {
-    rust_code_markup_with_doc::<_, &str>(val, None)
+    rust_code_markup_with_doc::<_, &str>(val, None, None)
 }
 
-pub(crate) fn rust_code_markup_with_doc<CODE, DOC>(val: CODE, doc: Option<DOC>) -> String
+pub(crate) fn rust_code_markup_with_doc<CODE, DOC>(
+    val: CODE,
+    doc: Option<DOC>,
+    mod_path: Option<String>,
+) -> String
 where
     CODE: AsRef<str>,
     DOC: AsRef<str>,
 {
+    let mod_path =
+        mod_path.filter(|path| !path.is_empty()).map(|path| path + "\n").unwrap_or_default();
     if let Some(doc) = doc {
-        format!("```rust\n{}\n```\n\n{}", val.as_ref(), doc.as_ref())
+        format!("```rust\n{}{}\n```\n\n{}", mod_path, val.as_ref(), doc.as_ref())
     } else {
-        format!("```rust\n{}\n```", val.as_ref())
+        format!("```rust\n{}{}\n```", mod_path, val.as_ref())
     }
 }
diff --git a/crates/ra_ide/src/hover.rs b/crates/ra_ide/src/hover.rs
index e9c682557..25e038a55 100644
--- a/crates/ra_ide/src/hover.rs
+++ b/crates/ra_ide/src/hover.rs
@@ -1,6 +1,10 @@
 //! FIXME: write short doc here
 
-use hir::{Adt, HasSource, HirDisplay, Semantics};
+use hir::{
+    Adt, AsAssocItem, AssocItemContainer, FieldSource, HasSource, HirDisplay, ModuleDef,
+    ModuleSource, Semantics,
+};
+use ra_db::SourceDatabase;
 use ra_ide_db::{
     defs::{classify_name, classify_name_ref, Definition},
     RootDatabase,
@@ -16,6 +20,8 @@ use crate::{
     display::{macro_label, rust_code_markup, rust_code_markup_with_doc, ShortLabel},
     FilePosition, RangeInfo,
 };
+use itertools::Itertools;
+use std::iter::once;
 
 /// Contains the results when hovering over an item
 #[derive(Debug, Clone)]
@@ -83,44 +89,86 @@ impl HoverResult {
     }
 }
 
-fn hover_text(docs: Option<String>, desc: Option<String>) -> Option<String> {
-    match (desc, docs) {
-        (Some(desc), docs) => Some(rust_code_markup_with_doc(desc, docs)),
-        (None, Some(docs)) => Some(docs),
+fn hover_text(
+    docs: Option<String>,
+    desc: Option<String>,
+    mod_path: Option<String>,
+) -> Option<String> {
+    match (desc, docs, mod_path) {
+        (Some(desc), docs, mod_path) => Some(rust_code_markup_with_doc(desc, docs, mod_path)),
+        (None, Some(docs), _) => Some(docs),
+        _ => None,
+    }
+}
+
+fn definition_owner_name(db: &RootDatabase, def: &Definition) -> Option<String> {
+    match def {
+        Definition::StructField(f) => Some(f.parent_def(db).name(db)),
+        Definition::Local(l) => l.parent(db).name(db),
+        Definition::ModuleDef(md) => match md {
+            ModuleDef::Function(f) => match f.as_assoc_item(db)?.container(db) {
+                AssocItemContainer::Trait(t) => Some(t.name(db)),
+                AssocItemContainer::ImplDef(i) => i.target_ty(db).as_adt().map(|adt| adt.name(db)),
+            },
+            ModuleDef::EnumVariant(e) => Some(e.parent_enum(db).name(db)),
+            _ => None,
+        },
+        Definition::SelfType(i) => i.target_ty(db).as_adt().map(|adt| adt.name(db)),
         _ => None,
     }
+    .map(|name| name.to_string())
+}
+
+fn determine_mod_path(db: &RootDatabase, def: &Definition) -> Option<String> {
+    let mod_path = def.module(db).map(|module| {
+        once(db.crate_graph()[module.krate().into()].display_name.clone())
+            .chain(
+                module
+                    .path_to_root(db)
+                    .into_iter()
+                    .rev()
+                    .map(|it| it.name(db).map(|name| name.to_string())),
+            )
+            .chain(once(definition_owner_name(db, def)))
+            .flatten()
+            .join("::")
+    });
+    mod_path
 }
 
 fn hover_text_from_name_kind(db: &RootDatabase, def: Definition) -> Option<String> {
+    let mod_path = determine_mod_path(db, &def);
     return match def {
         Definition::Macro(it) => {
             let src = it.source(db);
-            hover_text(src.value.doc_comment_text(), Some(macro_label(&src.value)))
+            hover_text(src.value.doc_comment_text(), Some(macro_label(&src.value)), mod_path)
         }
         Definition::StructField(it) => {
             let src = it.source(db);
             match src.value {
-                hir::FieldSource::Named(it) => hover_text(it.doc_comment_text(), it.short_label()),
+                FieldSource::Named(it) => {
+                    hover_text(it.doc_comment_text(), it.short_label(), mod_path)
+                }
                 _ => None,
             }
         }
         Definition::ModuleDef(it) => match it {
-            hir::ModuleDef::Module(it) => match it.definition_source(db).value {
-                hir::ModuleSource::Module(it) => {
-                    hover_text(it.doc_comment_text(), it.short_label())
+            ModuleDef::Module(it) => match it.definition_source(db).value {
+                ModuleSource::Module(it) => {
+                    hover_text(it.doc_comment_text(), it.short_label(), mod_path)
                 }
                 _ => None,
             },
-            hir::ModuleDef::Function(it) => from_def_source(db, it),
-            hir::ModuleDef::Adt(Adt::Struct(it)) => from_def_source(db, it),
-            hir::ModuleDef::Adt(Adt::Union(it)) => from_def_source(db, it),
-            hir::ModuleDef::Adt(Adt::Enum(it)) => from_def_source(db, it),
-            hir::ModuleDef::EnumVariant(it) => from_def_source(db, it),
-            hir::ModuleDef::Const(it) => from_def_source(db, it),
-            hir::ModuleDef::Static(it) => from_def_source(db, it),
-            hir::ModuleDef::Trait(it) => from_def_source(db, it),
-            hir::ModuleDef::TypeAlias(it) => from_def_source(db, it),
-            hir::ModuleDef::BuiltinType(it) => Some(it.to_string()),
+            ModuleDef::Function(it) => from_def_source(db, it, mod_path),
+            ModuleDef::Adt(Adt::Struct(it)) => from_def_source(db, it, mod_path),
+            ModuleDef::Adt(Adt::Union(it)) => from_def_source(db, it, mod_path),
+            ModuleDef::Adt(Adt::Enum(it)) => from_def_source(db, it, mod_path),
+            ModuleDef::EnumVariant(it) => from_def_source(db, it, mod_path),
+            ModuleDef::Const(it) => from_def_source(db, it, mod_path),
+            ModuleDef::Static(it) => from_def_source(db, it, mod_path),
+            ModuleDef::Trait(it) => from_def_source(db, it, mod_path),
+            ModuleDef::TypeAlias(it) => from_def_source(db, it, mod_path),
+            ModuleDef::BuiltinType(it) => Some(it.to_string()),
         },
         Definition::Local(it) => {
             Some(rust_code_markup(it.ty(db).display_truncated(db, None).to_string()))
@@ -131,13 +179,13 @@ fn hover_text_from_name_kind(db: &RootDatabase, def: Definition) -> Option<Strin
         }
     };
 
-    fn from_def_source<A, D>(db: &RootDatabase, def: D) -> Option<String>
+    fn from_def_source<A, D>(db: &RootDatabase, def: D, mod_path: Option<String>) -> Option<String>
     where
         D: HasSource<Ast = A>,
         A: ast::DocCommentsOwner + ast::NameOwner + ShortLabel,
     {
         let src = def.source(db);
-        hover_text(src.value.doc_comment_text(), src.value.short_label())
+        hover_text(src.value.doc_comment_text(), src.value.short_label(), mod_path)
     }
 }
 
@@ -345,7 +393,7 @@ mod tests {
                 };
             }
         "#,
-            &["field_a: u32"],
+            &["Foo\nfield_a: u32"],
         );
 
         // Hovering over the field in the definition
@@ -362,7 +410,7 @@ mod tests {
                 };
             }
         "#,
-            &["field_a: u32"],
+            &["Foo\nfield_a: u32"],
         );
     }
 
@@ -415,7 +463,7 @@ fn main() {
             ",
         );
         let hover = analysis.hover(position).unwrap().unwrap();
-        assert_eq!(trim_markup_opt(hover.info.first()), Some("Some"));
+        assert_eq!(trim_markup_opt(hover.info.first()), Some("Option\nSome"));
 
         let (analysis, position) = single_file_with_position(
             "
@@ -442,6 +490,7 @@ fn main() {
             }
         "#,
             &["
+Option
 None
 ```
 
@@ -462,6 +511,7 @@ The None variant
             }
         "#,
             &["
+Option
 Some
 ```
 
@@ -528,21 +578,23 @@ fn func(foo: i32) { if true { <|>foo; }; }
     fn test_hover_infer_associated_method_exact() {
         let (analysis, position) = single_file_with_position(
             "
-            struct Thing { x: u32 }
+            mod wrapper {
+                struct Thing { x: u32 }
 
-            impl Thing {
-                fn new() -> Thing {
-                    Thing { x: 0 }
+                impl Thing {
+                    fn new() -> Thing {
+                        Thing { x: 0 }
+                    }
                 }
             }
 
             fn main() {
-                let foo_test = Thing::new<|>();
+                let foo_test = wrapper::Thing::new<|>();
             }
             ",
         );
         let hover = analysis.hover(position).unwrap().unwrap();
-        assert_eq!(trim_markup_opt(hover.info.first()), Some("fn new() -> Thing"));
+        assert_eq!(trim_markup_opt(hover.info.first()), Some("wrapper::Thing\nfn new() -> Thing"));
         assert_eq!(hover.info.is_exact(), true);
     }
 
diff --git a/crates/ra_ide/src/inlay_hints.rs b/crates/ra_ide/src/inlay_hints.rs
index 69098a630..cf0cbdbd0 100644
--- a/crates/ra_ide/src/inlay_hints.rs
+++ b/crates/ra_ide/src/inlay_hints.rs
@@ -119,6 +119,12 @@ fn should_not_display_type_hint(db: &RootDatabase, bind_pat: &ast::BindPat, pat_
         return true;
     }
 
+    if let Some(Adt::Struct(s)) = pat_ty.as_adt() {
+        if s.fields(db).is_empty() && s.name(db).to_string() == bind_pat.syntax().to_string() {
+            return true;
+        }
+    }
+
     for node in bind_pat.syntax().ancestors() {
         match_ast! {
             match node {
@@ -943,4 +949,30 @@ fn main() {
         "###
         );
     }
+
+    #[test]
+    fn unit_structs_have_no_type_hints() {
+        let (analysis, file_id) = single_file(
+            r#"
+enum CustomResult<T, E> {
+    Ok(T),
+    Err(E),
+}
+use CustomResult::*;
+
+struct SyntheticSyntax;
+
+fn main() {
+    match Ok(()) {
+        Ok(_) => (),
+        Err(SyntheticSyntax) => (),
+    }
+}"#,
+        );
+
+        assert_debug_snapshot!(analysis.inlay_hints(file_id, Some(8)).unwrap(), @r###"
+        []
+        "###
+        );
+    }
 }
diff --git a/crates/ra_ide/src/lib.rs b/crates/ra_ide/src/lib.rs
index 4dfe0553e..c60e86aea 100644
--- a/crates/ra_ide/src/lib.rs
+++ b/crates/ra_ide/src/lib.rs
@@ -211,7 +211,13 @@ impl Analysis {
         // Default to enable test for single file.
         let mut cfg_options = CfgOptions::default();
         cfg_options.insert_atom("test".into());
-        crate_graph.add_crate_root(file_id, Edition::Edition2018, cfg_options, Env::default());
+        crate_graph.add_crate_root(
+            file_id,
+            Edition::Edition2018,
+            None,
+            cfg_options,
+            Env::default(),
+        );
         change.add_file(source_root, file_id, "main.rs".into(), Arc::new(text));
         change.set_crate_graph(crate_graph);
         host.apply_change(change);
@@ -415,12 +421,12 @@ impl Analysis {
 
     /// Returns the edition of the given crate.
     pub fn crate_edition(&self, crate_id: CrateId) -> Cancelable<Edition> {
-        self.with_db(|db| db.crate_graph().edition(crate_id))
+        self.with_db(|db| db.crate_graph()[crate_id].edition)
     }
 
     /// Returns the root file of the given crate.
     pub fn crate_root(&self, crate_id: CrateId) -> Cancelable<FileId> {
-        self.with_db(|db| db.crate_graph().crate_root(crate_id))
+        self.with_db(|db| db.crate_graph()[crate_id].root_file_id)
     }
 
     /// Returns the set of possible targets to run for the current file.
diff --git a/crates/ra_ide/src/mock_analysis.rs b/crates/ra_ide/src/mock_analysis.rs
index f4cd6deb7..90f84b052 100644
--- a/crates/ra_ide/src/mock_analysis.rs
+++ b/crates/ra_ide/src/mock_analysis.rs
@@ -99,13 +99,19 @@ impl MockAnalysis {
                 root_crate = Some(crate_graph.add_crate_root(
                     file_id,
                     Edition2018,
+                    None,
                     cfg_options,
                     Env::default(),
                 ));
             } else if path.ends_with("/lib.rs") {
-                let other_crate =
-                    crate_graph.add_crate_root(file_id, Edition2018, cfg_options, Env::default());
                 let crate_name = path.parent().unwrap().file_name().unwrap();
+                let other_crate = crate_graph.add_crate_root(
+                    file_id,
+                    Edition2018,
+                    Some(crate_name.to_owned()),
+                    cfg_options,
+                    Env::default(),
+                );
                 if let Some(root_crate) = root_crate {
                     crate_graph
                         .add_dep(root_crate, CrateName::new(crate_name).unwrap(), other_crate)
diff --git a/crates/ra_ide/src/parent_module.rs b/crates/ra_ide/src/parent_module.rs
index 2c4bdb039..b73cefd97 100644
--- a/crates/ra_ide/src/parent_module.rs
+++ b/crates/ra_ide/src/parent_module.rs
@@ -133,6 +133,7 @@ mod tests {
         let crate_id = crate_graph.add_crate_root(
             root_file,
             Edition2018,
+            None,
             CfgOptions::default(),
             Env::default(),
         );
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/change.rs b/crates/ra_ide_db/src/change.rs
index 8b5be9d21..628cf6416 100644
--- a/crates/ra_ide_db/src/change.rs
+++ b/crates/ra_ide_db/src/change.rs
@@ -5,7 +5,7 @@ use std::{fmt, sync::Arc, time};
 
 use ra_db::{
     salsa::{Database, Durability, SweepStrategy},
-    CrateGraph, CrateId, FileId, RelativePathBuf, SourceDatabase, SourceDatabaseExt, SourceRoot,
+    CrateGraph, FileId, RelativePathBuf, SourceDatabase, SourceDatabaseExt, SourceRoot,
     SourceRootId,
 };
 use ra_prof::{memory_usage, profile, Bytes};
@@ -88,10 +88,6 @@ impl AnalysisChange {
         self.crate_graph = Some(graph);
     }
 
-    pub fn set_debug_crate_name(&mut self, crate_id: CrateId, name: String) {
-        self.debug_data.crate_names.insert(crate_id, name);
-    }
-
     pub fn set_debug_root_path(&mut self, source_root_id: SourceRootId, path: String) {
         self.debug_data.root_paths.insert(source_root_id, path);
     }
diff --git a/crates/ra_ide_db/src/lib.rs b/crates/ra_ide_db/src/lib.rs
index 79f48c9e3..a105c7556 100644
--- a/crates/ra_ide_db/src/lib.rs
+++ b/crates/ra_ide_db/src/lib.rs
@@ -131,12 +131,10 @@ fn line_index(db: &impl LineIndexDatabase, file_id: FileId) -> Arc<LineIndex> {
 #[derive(Debug, Default, Clone)]
 pub(crate) struct DebugData {
     pub(crate) root_paths: FxHashMap<SourceRootId, String>,
-    pub(crate) crate_names: FxHashMap<CrateId, String>,
 }
 
 impl DebugData {
     pub(crate) fn merge(&mut self, other: DebugData) {
         self.root_paths.extend(other.root_paths.into_iter());
-        self.crate_names.extend(other.crate_names.into_iter());
     }
 }
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 }
     }
 
diff --git a/crates/ra_mbe/src/lib.rs b/crates/ra_mbe/src/lib.rs
index 2c6ae5658..43afe24cc 100644
--- a/crates/ra_mbe/src/lib.rs
+++ b/crates/ra_mbe/src/lib.rs
@@ -31,7 +31,8 @@ pub enum ExpandError {
 }
 
 pub use crate::syntax_bridge::{
-    ast_to_token_tree, syntax_node_to_token_tree, token_tree_to_syntax_node, TokenMap,
+    ast_to_token_tree, parse_to_token_tree, syntax_node_to_token_tree, token_tree_to_syntax_node,
+    TokenMap,
 };
 
 /// This struct contains AST for a single `macro_rules` definition. What might
diff --git a/crates/ra_mbe/src/mbe_expander/matcher.rs b/crates/ra_mbe/src/mbe_expander/matcher.rs
index ffba03898..49c53183a 100644
--- a/crates/ra_mbe/src/mbe_expander/matcher.rs
+++ b/crates/ra_mbe/src/mbe_expander/matcher.rs
@@ -247,6 +247,7 @@ impl<'a> TtIter<'a> {
         ra_parser::parse_fragment(&mut src, &mut sink, fragment_kind);
 
         if !sink.cursor.is_root() || sink.error {
+            // FIXME better recovery in this case would help completion inside macros immensely
             return Err(());
         }
 
@@ -375,7 +376,8 @@ fn match_meta_var(kind: &str, input: &mut TtIter) -> Result<Option<Fragment>, Ex
             return Ok(Some(Fragment::Tokens(tt)));
         }
     };
-    let tt = input.expect_fragment(fragment).map_err(|()| err!())?;
+    let tt =
+        input.expect_fragment(fragment).map_err(|()| err!("fragment did not parse as {}", kind))?;
     let fragment = if kind == "expr" { Fragment::Ast(tt) } else { Fragment::Tokens(tt) };
     Ok(Some(fragment))
 }
diff --git a/crates/ra_mbe/src/syntax_bridge.rs b/crates/ra_mbe/src/syntax_bridge.rs
index fb9fa5314..fcb73fbc7 100644
--- a/crates/ra_mbe/src/syntax_bridge.rs
+++ b/crates/ra_mbe/src/syntax_bridge.rs
@@ -2,8 +2,10 @@
 
 use ra_parser::{FragmentKind, ParseError, TreeSink};
 use ra_syntax::{
-    ast, AstToken, NodeOrToken, Parse, SmolStr, SyntaxKind, SyntaxKind::*, SyntaxNode,
-    SyntaxTreeBuilder, TextRange, TextUnit, T,
+    ast::{self, make::tokens::doc_comment},
+    tokenize, AstToken, NodeOrToken, Parse, SmolStr, SyntaxKind,
+    SyntaxKind::*,
+    SyntaxNode, SyntaxTreeBuilder, TextRange, TextUnit, Token, T,
 };
 use rustc_hash::FxHashMap;
 use std::iter::successors;
@@ -48,9 +50,11 @@ pub fn ast_to_token_tree(ast: &impl ast::AstNode) -> Option<(tt::Subtree, TokenM
 /// will consume).
 pub fn syntax_node_to_token_tree(node: &SyntaxNode) -> Option<(tt::Subtree, TokenMap)> {
     let global_offset = node.text_range().start();
-    let mut c = Convertor { map: TokenMap::default(), global_offset, next_id: 0 };
+    let mut c = Convertor {
+        id_alloc: { TokenIdAlloc { map: TokenMap::default(), global_offset, next_id: 0 } },
+    };
     let subtree = c.go(node)?;
-    Some((subtree, c.map))
+    Some((subtree, c.id_alloc.map))
 }
 
 // The following items are what `rustc` macro can be parsed into :
@@ -89,6 +93,28 @@ pub fn token_tree_to_syntax_node(
     Ok((parse, range_map))
 }
 
+/// Convert a string to a `TokenTree`
+pub fn parse_to_token_tree(text: &str) -> Option<(tt::Subtree, TokenMap)> {
+    let (tokens, errors) = tokenize(text);
+    if !errors.is_empty() {
+        return None;
+    }
+
+    let mut conv = RawConvertor {
+        text,
+        offset: TextUnit::default(),
+        inner: tokens.iter(),
+        id_alloc: TokenIdAlloc {
+            map: Default::default(),
+            global_offset: TextUnit::default(),
+            next_id: 0,
+        },
+    };
+
+    let subtree = conv.go()?;
+    Some((subtree, conv.id_alloc.map))
+}
+
 impl TokenMap {
     pub fn token_by_range(&self, relative_range: TextRange) -> Option<tt::TokenId> {
         let &(token_id, _) = self.entries.iter().find(|(_, range)| match range {
@@ -118,6 +144,14 @@ impl TokenMap {
         self.entries
             .push((token_id, TokenTextRange::Delimiter(open_relative_range, close_relative_range)));
     }
+
+    fn update_close_delim(&mut self, token_id: tt::TokenId, close_relative_range: TextRange) {
+        if let Some(entry) = self.entries.iter_mut().find(|(tid, _)| *tid == token_id) {
+            if let TokenTextRange::Delimiter(dim, _) = entry.1 {
+                entry.1 = TokenTextRange::Delimiter(dim, close_relative_range);
+            }
+        }
+    }
 }
 
 /// Returns the textual content of a doc comment block as a quoted string
@@ -188,12 +222,161 @@ fn convert_doc_comment(token: &ra_syntax::SyntaxToken) -> Option<Vec<tt::TokenTr
     }
 }
 
-struct Convertor {
+struct TokenIdAlloc {
     map: TokenMap,
     global_offset: TextUnit,
     next_id: u32,
 }
 
+impl TokenIdAlloc {
+    fn alloc(&mut self, absolute_range: TextRange) -> tt::TokenId {
+        let relative_range = absolute_range - self.global_offset;
+        let token_id = tt::TokenId(self.next_id);
+        self.next_id += 1;
+        self.map.insert(token_id, relative_range);
+        token_id
+    }
+
+    fn delim(&mut self, open_abs_range: TextRange, close_abs_range: TextRange) -> tt::TokenId {
+        let open_relative_range = open_abs_range - self.global_offset;
+        let close_relative_range = close_abs_range - self.global_offset;
+        let token_id = tt::TokenId(self.next_id);
+        self.next_id += 1;
+
+        self.map.insert_delim(token_id, open_relative_range, close_relative_range);
+        token_id
+    }
+
+    fn open_delim(&mut self, open_abs_range: TextRange) -> tt::TokenId {
+        let token_id = tt::TokenId(self.next_id);
+        self.next_id += 1;
+        self.map.insert_delim(token_id, open_abs_range, open_abs_range);
+        token_id
+    }
+
+    fn close_delim(&mut self, id: tt::TokenId, close_abs_range: TextRange) {
+        self.map.update_close_delim(id, close_abs_range);
+    }
+}
+
+/// A Raw Token (straightly from lexer) convertor
+struct RawConvertor<'a> {
+    text: &'a str,
+    offset: TextUnit,
+    id_alloc: TokenIdAlloc,
+    inner: std::slice::Iter<'a, Token>,
+}
+
+impl RawConvertor<'_> {
+    fn go(&mut self) -> Option<tt::Subtree> {
+        let mut subtree = tt::Subtree::default();
+        subtree.delimiter = None;
+        while self.peek().is_some() {
+            self.collect_leaf(&mut subtree.token_trees);
+        }
+        if subtree.token_trees.is_empty() {
+            return None;
+        }
+        if subtree.token_trees.len() == 1 {
+            if let tt::TokenTree::Subtree(first) = &subtree.token_trees[0] {
+                return Some(first.clone());
+            }
+        }
+        Some(subtree)
+    }
+
+    fn bump(&mut self) -> Option<(Token, TextRange)> {
+        let token = self.inner.next()?;
+        let range = TextRange::offset_len(self.offset, token.len);
+        self.offset += token.len;
+        Some((*token, range))
+    }
+
+    fn peek(&self) -> Option<Token> {
+        self.inner.as_slice().get(0).cloned()
+    }
+
+    fn collect_leaf(&mut self, result: &mut Vec<tt::TokenTree>) {
+        let (token, range) = match self.bump() {
+            None => return,
+            Some(it) => it,
+        };
+
+        let k: SyntaxKind = token.kind;
+        if k == COMMENT {
+            let node = doc_comment(&self.text[range]);
+            if let Some(tokens) = convert_doc_comment(&node) {
+                result.extend(tokens);
+            }
+            return;
+        }
+
+        result.push(if k.is_punct() {
+            let delim = match k {
+                T!['('] => Some((tt::DelimiterKind::Parenthesis, T![')'])),
+                T!['{'] => Some((tt::DelimiterKind::Brace, T!['}'])),
+                T!['['] => Some((tt::DelimiterKind::Bracket, T![']'])),
+                _ => None,
+            };
+
+            if let Some((kind, closed)) = delim {
+                let mut subtree = tt::Subtree::default();
+                let id = self.id_alloc.open_delim(range);
+                subtree.delimiter = Some(tt::Delimiter { kind, id });
+
+                while self.peek().map(|it| it.kind != closed).unwrap_or(false) {
+                    self.collect_leaf(&mut subtree.token_trees);
+                }
+                let last_range = match self.bump() {
+                    None => return,
+                    Some(it) => it.1,
+                };
+                self.id_alloc.close_delim(id, last_range);
+                subtree.into()
+            } else {
+                let spacing = match self.peek() {
+                    Some(next)
+                        if next.kind.is_trivia()
+                            || next.kind == T!['[']
+                            || next.kind == T!['{']
+                            || next.kind == T!['('] =>
+                    {
+                        tt::Spacing::Alone
+                    }
+                    Some(next) if next.kind.is_punct() => tt::Spacing::Joint,
+                    _ => tt::Spacing::Alone,
+                };
+                let char =
+                    self.text[range].chars().next().expect("Token from lexer must be single char");
+
+                tt::Leaf::from(tt::Punct { char, spacing, id: self.id_alloc.alloc(range) }).into()
+            }
+        } else {
+            macro_rules! make_leaf {
+                ($i:ident) => {
+                    tt::$i { id: self.id_alloc.alloc(range), text: self.text[range].into() }.into()
+                };
+            }
+            let leaf: tt::Leaf = match k {
+                T![true] | T![false] => make_leaf!(Literal),
+                IDENT | LIFETIME => make_leaf!(Ident),
+                k if k.is_keyword() => make_leaf!(Ident),
+                k if k.is_literal() => make_leaf!(Literal),
+                _ => return,
+            };
+
+            leaf.into()
+        });
+    }
+}
+
+// FIXME: There are some duplicate logic between RawConvertor and Convertor
+// It would be nice to refactor to converting SyntaxNode to ra_parser::Token and thus
+// use RawConvertor directly. But performance-wise it may not be a good idea ?
+struct Convertor {
+    id_alloc: TokenIdAlloc,
+}
+
 impl Convertor {
     fn go(&mut self, tt: &SyntaxNode) -> Option<tt::Subtree> {
         // This tree is empty
@@ -236,7 +419,7 @@ impl Convertor {
         };
         let delimiter = delimiter_kind.map(|kind| tt::Delimiter {
             kind,
-            id: self.alloc_delim(first_child.text_range(), last_child.text_range()),
+            id: self.id_alloc.delim(first_child.text_range(), last_child.text_range()),
         });
 
         let mut token_trees = Vec::new();
@@ -273,7 +456,7 @@ impl Convertor {
                                 tt::Leaf::from(tt::Punct {
                                     char,
                                     spacing,
-                                    id: self.alloc(token.text_range()),
+                                    id: self.id_alloc.alloc(token.text_range()),
                                 })
                                 .into(),
                             );
@@ -282,7 +465,7 @@ impl Convertor {
                         macro_rules! make_leaf {
                             ($i:ident) => {
                                 tt::$i {
-                                    id: self.alloc(token.text_range()),
+                                    id: self.id_alloc.alloc(token.text_range()),
                                     text: token.text().clone(),
                                 }
                                 .into()
@@ -313,28 +496,6 @@ impl Convertor {
         let res = tt::Subtree { delimiter, token_trees };
         Some(res)
     }
-
-    fn alloc(&mut self, absolute_range: TextRange) -> tt::TokenId {
-        let relative_range = absolute_range - self.global_offset;
-        let token_id = tt::TokenId(self.next_id);
-        self.next_id += 1;
-        self.map.insert(token_id, relative_range);
-        token_id
-    }
-
-    fn alloc_delim(
-        &mut self,
-        open_abs_range: TextRange,
-        close_abs_range: TextRange,
-    ) -> tt::TokenId {
-        let open_relative_range = open_abs_range - self.global_offset;
-        let close_relative_range = close_abs_range - self.global_offset;
-        let token_id = tt::TokenId(self.next_id);
-        self.next_id += 1;
-
-        self.map.insert_delim(token_id, open_relative_range, close_relative_range);
-        token_id
-    }
 }
 
 struct TtTreeSink<'a> {
diff --git a/crates/ra_mbe/src/tests.rs b/crates/ra_mbe/src/tests.rs
index 066ce150b..6d5d1e9e6 100644
--- a/crates/ra_mbe/src/tests.rs
+++ b/crates/ra_mbe/src/tests.rs
@@ -1499,12 +1499,20 @@ impl MacroFixture {
     }
 }
 
-pub(crate) fn parse_macro(macro_definition: &str) -> MacroFixture {
-    let source_file = ast::SourceFile::parse(macro_definition).ok().unwrap();
+pub(crate) fn parse_macro(ra_fixture: &str) -> MacroFixture {
+    let source_file = ast::SourceFile::parse(ra_fixture).ok().unwrap();
     let macro_definition =
         source_file.syntax().descendants().find_map(ast::MacroCall::cast).unwrap();
 
     let (definition_tt, _) = ast_to_token_tree(&macro_definition.token_tree().unwrap()).unwrap();
+
+    let parsed = parse_to_token_tree(
+        &ra_fixture[macro_definition.token_tree().unwrap().syntax().text_range()],
+    )
+    .unwrap()
+    .0;
+    assert_eq!(definition_tt, parsed);
+
     let rules = MacroRules::parse(&definition_tt).unwrap();
     MacroFixture { rules }
 }
diff --git a/crates/ra_project_model/src/lib.rs b/crates/ra_project_model/src/lib.rs
index bcf12460d..37845ca56 100644
--- a/crates/ra_project_model/src/lib.rs
+++ b/crates/ra_project_model/src/lib.rs
@@ -14,7 +14,7 @@ use std::{
 
 use anyhow::{bail, Context, Result};
 use ra_cfg::CfgOptions;
-use ra_db::{CrateGraph, CrateId, CrateName, Edition, Env, FileId};
+use ra_db::{CrateGraph, CrateName, Edition, Env, FileId};
 use rustc_hash::FxHashMap;
 use serde_json::from_reader;
 
@@ -163,9 +163,8 @@ impl ProjectWorkspace {
         &self,
         default_cfg_options: &CfgOptions,
         load: &mut dyn FnMut(&Path) -> Option<FileId>,
-    ) -> (CrateGraph, FxHashMap<CrateId, String>) {
+    ) -> CrateGraph {
         let mut crate_graph = CrateGraph::default();
-        let mut names = FxHashMap::default();
         match self {
             ProjectWorkspace::Json { project } => {
                 let mut crates = FxHashMap::default();
@@ -191,6 +190,8 @@ impl ProjectWorkspace {
                             crate_graph.add_crate_root(
                                 file_id,
                                 edition,
+                                // FIXME json definitions can store the crate name
+                                None,
                                 cfg_options,
                                 Env::default(),
                             ),
@@ -233,11 +234,11 @@ impl ProjectWorkspace {
                         let crate_id = crate_graph.add_crate_root(
                             file_id,
                             Edition::Edition2018,
+                            Some(krate.name(&sysroot).to_string()),
                             cfg_options,
                             Env::default(),
                         );
                         sysroot_crates.insert(krate, crate_id);
-                        names.insert(crate_id, krate.name(&sysroot).to_string());
                     }
                 }
                 for from in sysroot.crates() {
@@ -277,10 +278,10 @@ impl ProjectWorkspace {
                             let crate_id = crate_graph.add_crate_root(
                                 file_id,
                                 edition,
+                                Some(pkg.name(&cargo).to_string()),
                                 cfg_options,
                                 Env::default(),
                             );
-                            names.insert(crate_id, pkg.name(&cargo).to_string());
                             if tgt.kind(&cargo) == TargetKind::Lib {
                                 lib_tgt = Some(crate_id);
                                 pkg_to_lib_crate.insert(pkg, crate_id);
@@ -381,7 +382,7 @@ impl ProjectWorkspace {
                 }
             }
         }
-        (crate_graph, names)
+        crate_graph
     }
 
     pub fn workspace_root_for(&self, path: &Path) -> Option<&Path> {
diff --git a/crates/ra_syntax/src/ast/make.rs b/crates/ra_syntax/src/ast/make.rs
index 53d6fa562..ae8829807 100644
--- a/crates/ra_syntax/src/ast/make.rs
+++ b/crates/ra_syntax/src/ast/make.rs
@@ -267,6 +267,12 @@ pub mod tokens {
         sf.syntax().first_child_or_token().unwrap().into_token().unwrap()
     }
 
+    pub fn doc_comment(text: &str) -> SyntaxToken {
+        assert!(!text.trim().is_empty());
+        let sf = SourceFile::parse(text).ok().unwrap();
+        sf.syntax().first_child_or_token().unwrap().into_token().unwrap()
+    }
+
     pub fn literal(text: &str) -> SyntaxToken {
         assert_eq!(text.trim(), text);
         let lit: ast::Literal = super::ast_from_text(&format!("fn f() {{ let _ = {}; }}", text));
diff --git a/crates/rust-analyzer/Cargo.toml b/crates/rust-analyzer/Cargo.toml
index b14ebb268..d44f0ef1d 100644
--- a/crates/rust-analyzer/Cargo.toml
+++ b/crates/rust-analyzer/Cargo.toml
@@ -20,7 +20,7 @@ globset = "0.4.4"
 itertools = "0.8.2"
 jod-thread = "0.1.0"
 log = "0.4.8"
-lsp-types = { version = "0.72.0", features = ["proposed"] }
+lsp-types = { version = "0.73.0", features = ["proposed"] }
 parking_lot = "0.10.0"
 pico-args = "0.3.1"
 rand = { version = "0.7.3", features = ["small_rng"] }
diff --git a/crates/rust-analyzer/src/cli/load_cargo.rs b/crates/rust-analyzer/src/cli/load_cargo.rs
index 8cd08ecb6..4be987860 100644
--- a/crates/rust-analyzer/src/cli/load_cargo.rs
+++ b/crates/rust-analyzer/src/cli/load_cargo.rs
@@ -52,12 +52,11 @@ pub(crate) fn load_cargo(
         opts
     };
 
-    let (crate_graph, _crate_names) =
-        ws.to_crate_graph(&default_cfg_options, &mut |path: &Path| {
-            let vfs_file = vfs.load(path);
-            log::debug!("vfs file {:?} -> {:?}", path, vfs_file);
-            vfs_file.map(vfs_file_to_id)
-        });
+    let crate_graph = ws.to_crate_graph(&default_cfg_options, &mut |path: &Path| {
+        let vfs_file = vfs.load(path);
+        log::debug!("vfs file {:?} -> {:?}", path, vfs_file);
+        vfs_file.map(vfs_file_to_id)
+    });
     log::debug!("crate graph: {:?}", crate_graph);
 
     let source_roots = roots
diff --git a/crates/rust-analyzer/src/main_loop.rs b/crates/rust-analyzer/src/main_loop.rs
index 580ad1f2c..221f464b6 100644
--- a/crates/rust-analyzer/src/main_loop.rs
+++ b/crates/rust-analyzer/src/main_loop.rs
@@ -44,6 +44,8 @@ pub struct LspError {
 }
 
 impl LspError {
+    pub const UNKNOWN_FILE: i32 = -32900;
+
     pub fn new(code: i32, message: String) -> LspError {
         LspError { code, message }
     }
@@ -631,6 +633,9 @@ fn on_notification(
         }
         Err(not) => not,
     };
+    if not.method.starts_with("$/") {
+        return Ok(());
+    }
     log::error!("unhandled notification: {:?}", not);
     Ok(())
 }
@@ -802,7 +807,14 @@ where
     let response = match result {
         Ok(resp) => Response::new_ok(id, &resp),
         Err(e) => match e.downcast::<LspError>() {
-            Ok(lsp_error) => Response::new_err(id, lsp_error.code, lsp_error.message),
+            Ok(lsp_error) => {
+                if lsp_error.code == LspError::UNKNOWN_FILE {
+                    // Work-around for https://github.com/rust-analyzer/rust-analyzer/issues/1521
+                    Response::new_ok(id, ())
+                } else {
+                    Response::new_err(id, lsp_error.code, lsp_error.message)
+                }
+            }
             Err(e) => {
                 if is_canceled(&e) {
                     Response::new_err(
diff --git a/crates/rust-analyzer/src/main_loop/handlers.rs b/crates/rust-analyzer/src/main_loop/handlers.rs
index b498c90c9..8dc6e8dc0 100644
--- a/crates/rust-analyzer/src/main_loop/handlers.rs
+++ b/crates/rust-analyzer/src/main_loop/handlers.rs
@@ -85,11 +85,11 @@ pub fn handle_expand_macro(
 pub fn handle_selection_range(
     world: WorldSnapshot,
     params: req::SelectionRangeParams,
-) -> Result<Vec<req::SelectionRange>> {
+) -> Result<Option<Vec<req::SelectionRange>>> {
     let _p = profile("handle_selection_range");
     let file_id = params.text_document.try_conv_with(&world)?;
     let line_index = world.analysis().file_line_index(file_id)?;
-    params
+    let res: Result<Vec<req::SelectionRange>> = params
         .positions
         .into_iter()
         .map_conv_with(&line_index)
@@ -120,7 +120,9 @@ pub fn handle_selection_range(
             }
             Ok(range)
         })
-        .collect()
+        .collect();
+
+    Ok(Some(res?))
 }
 
 pub fn handle_find_matching_brace(
diff --git a/crates/rust-analyzer/src/world.rs b/crates/rust-analyzer/src/world.rs
index 96efab844..6f394055a 100644
--- a/crates/rust-analyzer/src/world.rs
+++ b/crates/rust-analyzer/src/world.rs
@@ -9,7 +9,6 @@ use std::{
 };
 
 use crossbeam_channel::{unbounded, Receiver};
-use lsp_server::ErrorCode;
 use lsp_types::Url;
 use parking_lot::RwLock;
 use ra_cargo_watch::{url_from_path_with_drive_lowercasing, CheckOptions, CheckWatcher};
@@ -123,13 +122,12 @@ impl WorldState {
             let vfs_file = vfs.load(path);
             vfs_file.map(|f| FileId(f.0))
         };
-        for ws in workspaces.iter() {
-            let (graph, crate_names) = ws.to_crate_graph(&default_cfg_options, &mut load);
-            let shift = crate_graph.extend(graph);
-            for (crate_id, name) in crate_names {
-                change.set_debug_crate_name(crate_id.shift(shift), name)
-            }
-        }
+
+        workspaces.iter().map(|ws| ws.to_crate_graph(&default_cfg_options, &mut load)).for_each(
+            |graph| {
+                crate_graph.extend(graph);
+            },
+        );
         change.set_crate_graph(crate_graph);
 
         // FIXME: Figure out the multi-workspace situation
@@ -252,8 +250,9 @@ impl WorldSnapshot {
         let path = uri.to_file_path().map_err(|()| format!("invalid uri: {}", uri))?;
         let file = self.vfs.read().path2file(&path).ok_or_else(|| {
             // Show warning as this file is outside current workspace
+            // FIXME: just handle such files, and remove `LspError::UNKNOWN_FILE`.
             LspError {
-                code: ErrorCode::InvalidRequest as i32,
+                code: LspError::UNKNOWN_FILE,
                 message: "Rust file outside current workspace is not supported yet.".to_string(),
             }
         })?;
diff --git a/docs/user/readme.adoc b/docs/user/readme.adoc
index f1386a8f9..4e99dd0a6 100644
--- a/docs/user/readme.adoc
+++ b/docs/user/readme.adoc
@@ -2,6 +2,13 @@
 :toc: preamble
 :sectanchors:
 :page-layout: post
+// https://gist.github.com/dcode/0cfbf2699a1fe9b46ff04c41721dda74#admonitions
+:tip-caption: :bulb:
+:note-caption: :information_source:
+:important-caption: :heavy_exclamation_mark:
+:caution-caption: :fire:
+:warning-caption: :warning:
+
 
 
 // Master copy of this document lives in the https://github.com/rust-analyzer/rust-analyzer repository
@@ -30,7 +37,7 @@ $ rustup component add rust-src
 
 === VS Code
 
-This the best supported editor at the moment.
+This is the best supported editor at the moment.
 rust-analyzer plugin for VS Code is maintained
 https://github.com/rust-analyzer/rust-analyzer/tree/master/editors/code[in tree].
 
@@ -40,6 +47,16 @@ By default, the plugin will prompt you to download the matching version of the s
 
 image::https://user-images.githubusercontent.com/9021944/75067008-17502500-54ba-11ea-835a-f92aac50e866.png[]
 
+[NOTE]
+====
+To disable this notification put the following to `settings.json`
+
+[source,json]
+----
+{ "rust-analyzer.updates.askBeforeDownload": false }
+----
+====
+
 The server binary is stored in `~/.config/Code/User/globalStorage/matklad.rust-analyzer`.
 
 Note that we only support the latest version of VS Code.
@@ -124,7 +141,7 @@ let g:LanguageClient_serverCommands = {
 
 NeoVim 0.5 (not yet released) has built-in language server support.
 For a quick start configuration of rust-analyzer, use https://github.com/neovim/nvim-lsp#rust_analyzer[neovim/nvim-lsp].
-Once `neovim/nvim-lsp` is installed, use `lua require'nvim_lsp'.rust_analyzer.setup({})` in your `init.vim`.
+Once `neovim/nvim-lsp` is installed, use `+lua require'nvim_lsp'.rust_analyzer.setup({})+` in your `init.vim`.
 
 === Sublime Text 3
 
diff --git a/editors/code/package.json b/editors/code/package.json
index 225739328..7a4a93e30 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -191,7 +191,7 @@
                     "properties": {
                         "lsp.diagnostics": {
                             "type": "boolean",
-                            "description": "Whether to show diagnostics from `cargo check`"
+                            "markdownDescription": "Whether to show diagnostics from `cargo check`"
                         },
                         "completion.insertion.add-call-parenthesis": {
                             "type": "boolean",
@@ -203,7 +203,7 @@
                         },
                         "completion.enable-postfix": {
                             "type": "boolean",
-                            "description": "Whether to show postfix snippets like `dbg`, `if`, `not`, etc."
+                            "markdownDescription": "Whether to show postfix snippets like `dbg`, `if`, `not`, etc."
                         },
                         "call-info.full": {
                             "type": "boolean",
@@ -211,14 +211,19 @@
                         },
                         "notifications.workspace-loaded": {
                             "type": "boolean",
-                            "description": "Whether to show `workspace loaded` message"
+                            "markdownDescription": "Whether to show `workspace loaded` message"
                         },
                         "notifications.cargo-toml-not-found": {
                             "type": "boolean",
-                            "description": "Whether to show `can't find Cargo.toml` error message"
+                            "markdownDescription": "Whether to show `can't find Cargo.toml` error message"
                         }
                     }
                 },
+                "rust-analyzer.updates.askBeforeDownload": {
+                    "type": "boolean",
+                    "default": true,
+                    "description": "Whether to ask for permission before downloading any files from the Internet"
+                },
                 "rust-analyzer.serverPath": {
                     "type": [
                         "null",
@@ -251,24 +256,24 @@
                 "rust-analyzer.cargo-watch.enable": {
                     "type": "boolean",
                     "default": true,
-                    "description": "Run `cargo check` for diagnostics on save"
+                    "markdownDescription": "Run `cargo check` for diagnostics on save"
                 },
                 "rust-analyzer.cargo-watch.arguments": {
                     "type": "array",
                     "items": {
                         "type": "string"
                     },
-                    "description": "`cargo-watch` arguments. (e.g: `--features=\"shumway,pdf\"` will run as `cargo watch -x \"check --features=\"shumway,pdf\"\"` )",
+                    "markdownDescription": "`cargo-watch` arguments. (e.g: `--features=\"shumway,pdf\"` will run as `cargo watch -x \"check --features=\"shumway,pdf\"\"` )",
                     "default": []
                 },
                 "rust-analyzer.cargo-watch.command": {
                     "type": "string",
-                    "description": "`cargo-watch` command. (e.g: `clippy` will run as `cargo watch -x clippy` )",
+                    "markdownDescription": "`cargo-watch` command. (e.g: `clippy` will run as `cargo watch -x clippy` )",
                     "default": "check"
                 },
                 "rust-analyzer.cargo-watch.allTargets": {
                     "type": "boolean",
-                    "description": "Check all targets and tests (will be passed as `--all-targets`)",
+                    "markdownDescription": "Check all targets and tests (will be passed as `--all-targets`)",
                     "default": true
                 },
                 "rust-analyzer.trace.server": {
@@ -320,7 +325,7 @@
                 "rust-analyzer.cargoFeatures.noDefaultFeatures": {
                     "type": "boolean",
                     "default": false,
-                    "description": "Do not activate the `default` feature"
+                    "markdownDescription": "Do not activate the `default` feature"
                 },
                 "rust-analyzer.cargoFeatures.allFeatures": {
                     "type": "boolean",
diff --git a/editors/code/src/config.ts b/editors/code/src/config.ts
index bf915102c..b72206d3c 100644
--- a/editors/code/src/config.ts
+++ b/editors/code/src/config.ts
@@ -1,6 +1,6 @@
 import * as os from "os";
 import * as vscode from 'vscode';
-import { BinarySource } from "./installation/interfaces";
+import { ArtifactSource } from "./installation/interfaces";
 import { log } from "./util";
 
 const RA_LSP_DEBUG = process.env.__RA_LSP_SERVER_DEBUG;
@@ -114,12 +114,12 @@ export class Config {
         }
     }
 
-    get serverSource(): null | BinarySource {
+    get serverSource(): null | ArtifactSource {
         const serverPath = RA_LSP_DEBUG ?? this.cfg.get<null | string>("serverPath");
 
         if (serverPath) {
             return {
-                type: BinarySource.Type.ExplicitPath,
+                type: ArtifactSource.Type.ExplicitPath,
                 path: Config.replaceTildeWithHomeDir(serverPath)
             };
         }
@@ -129,11 +129,12 @@ export class Config {
         if (!prebuiltBinaryName) return null;
 
         return {
-            type: BinarySource.Type.GithubRelease,
+            type: ArtifactSource.Type.GithubRelease,
             dir: this.ctx.globalStoragePath,
             file: prebuiltBinaryName,
             storage: this.ctx.globalState,
-            version: Config.extensionVersion,
+            tag: Config.extensionVersion,
+            askBeforeDownload: this.cfg.get("updates.askBeforeDownload") as boolean,
             repo: {
                 name: "rust-analyzer",
                 owner: "rust-analyzer",
diff --git a/editors/code/src/ctx.ts b/editors/code/src/ctx.ts
index b4e983a0c..25ef38aed 100644
--- a/editors/code/src/ctx.ts
+++ b/editors/code/src/ctx.ts
@@ -3,7 +3,7 @@ import * as lc from 'vscode-languageclient';
 
 import { Config } from './config';
 import { createClient } from './client';
-import { isRustDocument } from './util';
+import { isRustEditor, RustEditor } from './util';
 
 export class Ctx {
     private constructor(
@@ -22,17 +22,15 @@ export class Ctx {
         return res;
     }
 
-    get activeRustEditor(): vscode.TextEditor | undefined {
+    get activeRustEditor(): RustEditor | undefined {
         const editor = vscode.window.activeTextEditor;
-        return editor && isRustDocument(editor.document)
+        return editor && isRustEditor(editor)
             ? editor
             : undefined;
     }
 
-    get visibleRustEditors(): vscode.TextEditor[] {
-        return vscode.window.visibleTextEditors.filter(
-            editor => isRustDocument(editor.document),
-        );
+    get visibleRustEditors(): RustEditor[] {
+        return vscode.window.visibleTextEditors.filter(isRustEditor);
     }
 
     registerCommand(name: string, factory: (ctx: Ctx) => Cmd) {
diff --git a/editors/code/src/inlay_hints.ts b/editors/code/src/inlay_hints.ts
index 08d3a64a7..e1a82e03e 100644
--- a/editors/code/src/inlay_hints.ts
+++ b/editors/code/src/inlay_hints.ts
@@ -1,156 +1,214 @@
+import * as lc from "vscode-languageclient";
 import * as vscode from 'vscode';
 import * as ra from './rust-analyzer-api';
 
-import { Ctx } from './ctx';
-import { log, sendRequestWithRetry, isRustDocument } from './util';
+import { Ctx, Disposable } from './ctx';
+import { sendRequestWithRetry, isRustDocument, RustDocument, RustEditor } from './util';
 
-export function activateInlayHints(ctx: Ctx) {
-    const hintsUpdater = new HintsUpdater(ctx);
-    vscode.window.onDidChangeVisibleTextEditors(
-        async _ => hintsUpdater.refresh(),
-        null,
-        ctx.subscriptions
-    );
 
-    vscode.workspace.onDidChangeTextDocument(
-        async event => {
-            if (event.contentChanges.length === 0) return;
-            if (!isRustDocument(event.document)) return;
-            await hintsUpdater.refresh();
+export function activateInlayHints(ctx: Ctx) {
+    const maybeUpdater = {
+        updater: null as null | HintsUpdater,
+        onConfigChange() {
+            if (!ctx.config.displayInlayHints) {
+                return this.dispose();
+            }
+            if (!this.updater) this.updater = new HintsUpdater(ctx);
         },
-        null,
-        ctx.subscriptions
-    );
+        dispose() {
+            this.updater?.dispose();
+            this.updater = null;
+        }
+    };
+
+    ctx.pushCleanup(maybeUpdater);
 
     vscode.workspace.onDidChangeConfiguration(
-        async _ => hintsUpdater.setEnabled(ctx.config.displayInlayHints),
-        null,
-        ctx.subscriptions
+        maybeUpdater.onConfigChange, maybeUpdater, ctx.subscriptions
     );
 
-    ctx.pushCleanup({
-        dispose() {
-            hintsUpdater.clear();
+    maybeUpdater.onConfigChange();
+}
+
+
+const typeHints = {
+    decorationType: vscode.window.createTextEditorDecorationType({
+        after: {
+            color: new vscode.ThemeColor('rust_analyzer.inlayHint'),
+            fontStyle: "normal",
         }
-    });
+    }),
 
-    // XXX: we don't await this, thus Promise rejections won't be handled, but
-    // this should never throw in fact...
-    void hintsUpdater.setEnabled(ctx.config.displayInlayHints);
-}
+    toDecoration(hint: ra.InlayHint.TypeHint, conv: lc.Protocol2CodeConverter): vscode.DecorationOptions {
+        return {
+            range: conv.asRange(hint.range),
+            renderOptions: { after: { contentText: `: ${hint.label}` } }
+        };
+    }
+};
+
+const paramHints = {
+    decorationType: vscode.window.createTextEditorDecorationType({
+        before: {
+            color: new vscode.ThemeColor('rust_analyzer.inlayHint'),
+            fontStyle: "normal",
+        }
+    }),
 
-const typeHintDecorationType = vscode.window.createTextEditorDecorationType({
-    after: {
-        color: new vscode.ThemeColor('rust_analyzer.inlayHint'),
-        fontStyle: "normal",
-    },
-});
-
-const parameterHintDecorationType = vscode.window.createTextEditorDecorationType({
-    before: {
-        color: new vscode.ThemeColor('rust_analyzer.inlayHint'),
-        fontStyle: "normal",
-    },
-});
-
-class HintsUpdater {
-    private pending = new Map<string, vscode.CancellationTokenSource>();
-    private ctx: Ctx;
-    private enabled: boolean;
-
-    constructor(ctx: Ctx) {
-        this.ctx = ctx;
-        this.enabled = false;
+    toDecoration(hint: ra.InlayHint.ParamHint, conv: lc.Protocol2CodeConverter): vscode.DecorationOptions {
+        return {
+            range: conv.asRange(hint.range),
+            renderOptions: { before: { contentText: `${hint.label}: ` } }
+        };
     }
+};
 
-    async setEnabled(enabled: boolean): Promise<void> {
-        log.debug({ enabled, prev: this.enabled });
+class HintsUpdater implements Disposable {
+    private sourceFiles = new Map<string, RustSourceFile>(); // map Uri -> RustSourceFile
+    private readonly disposables: Disposable[] = [];
 
-        if (this.enabled === enabled) return;
-        this.enabled = enabled;
+    constructor(private readonly ctx: Ctx) {
+        vscode.window.onDidChangeVisibleTextEditors(
+            this.onDidChangeVisibleTextEditors,
+            this,
+            this.disposables
+        );
 
-        if (this.enabled) {
-            return await this.refresh();
-        } else {
-            return this.clear();
-        }
+        vscode.workspace.onDidChangeTextDocument(
+            this.onDidChangeTextDocument,
+            this,
+            this.disposables
+        );
+
+        // Set up initial cache shape
+        ctx.visibleRustEditors.forEach(editor => this.sourceFiles.set(
+            editor.document.uri.toString(),
+            {
+                document: editor.document,
+                inlaysRequest: null,
+                cachedDecorations: null
+            }
+        ));
+
+        this.syncCacheAndRenderHints();
     }
 
-    clear() {
-        this.ctx.visibleRustEditors.forEach(it => {
-            this.setTypeDecorations(it, []);
-            this.setParameterDecorations(it, []);
-        });
+    dispose() {
+        this.sourceFiles.forEach(file => file.inlaysRequest?.cancel());
+        this.ctx.visibleRustEditors.forEach(editor => this.renderDecorations(editor, { param: [], type: [] }));
+        this.disposables.forEach(d => d.dispose());
+    }
+
+    onDidChangeTextDocument({ contentChanges, document }: vscode.TextDocumentChangeEvent) {
+        if (contentChanges.length === 0 || !isRustDocument(document)) return;
+        this.syncCacheAndRenderHints();
     }
 
-    async refresh() {
-        if (!this.enabled) return;
-        await Promise.all(this.ctx.visibleRustEditors.map(it => this.refreshEditor(it)));
+    private syncCacheAndRenderHints() {
+        // FIXME: make inlayHints request pass an array of files?
+        this.sourceFiles.forEach((file, uri) => this.fetchHints(file).then(hints => {
+            if (!hints) return;
+
+            file.cachedDecorations = this.hintsToDecorations(hints);
+
+            for (const editor of this.ctx.visibleRustEditors) {
+                if (editor.document.uri.toString() === uri) {
+                    this.renderDecorations(editor, file.cachedDecorations);
+                }
+            }
+        }));
     }
 
-    private async refreshEditor(editor: vscode.TextEditor): Promise<void> {
-        const newHints = await this.queryHints(editor.document.uri.toString());
-        if (newHints == null) return;
-
-        const newTypeDecorations = newHints
-            .filter(hint => hint.kind === ra.InlayKind.TypeHint)
-            .map(hint => ({
-                range: this.ctx.client.protocol2CodeConverter.asRange(hint.range),
-                renderOptions: {
-                    after: {
-                        contentText: `: ${hint.label}`,
-                    },
-                },
-            }));
-        this.setTypeDecorations(editor, newTypeDecorations);
-
-        const newParameterDecorations = newHints
-            .filter(hint => hint.kind === ra.InlayKind.ParameterHint)
-            .map(hint => ({
-                range: this.ctx.client.protocol2CodeConverter.asRange(hint.range),
-                renderOptions: {
-                    before: {
-                        contentText: `${hint.label}: `,
-                    },
-                },
-            }));
-        this.setParameterDecorations(editor, newParameterDecorations);
+    onDidChangeVisibleTextEditors() {
+        const newSourceFiles = new Map<string, RustSourceFile>();
+
+        // Rerendering all, even up-to-date editors for simplicity
+        this.ctx.visibleRustEditors.forEach(async editor => {
+            const uri = editor.document.uri.toString();
+            const file = this.sourceFiles.get(uri) ?? {
+                document: editor.document,
+                inlaysRequest: null,
+                cachedDecorations: null
+            };
+            newSourceFiles.set(uri, file);
+
+            // No text documents changed, so we may try to use the cache
+            if (!file.cachedDecorations) {
+                file.inlaysRequest?.cancel();
+
+                const hints = await this.fetchHints(file);
+                if (!hints) return;
+
+                file.cachedDecorations = this.hintsToDecorations(hints);
+            }
+
+            this.renderDecorations(editor, file.cachedDecorations);
+        });
+
+        // Cancel requests for no longer visible (disposed) source files
+        this.sourceFiles.forEach((file, uri) => {
+            if (!newSourceFiles.has(uri)) file.inlaysRequest?.cancel();
+        });
+
+        this.sourceFiles = newSourceFiles;
     }
 
-    private setTypeDecorations(
-        editor: vscode.TextEditor,
-        decorations: vscode.DecorationOptions[],
-    ) {
-        editor.setDecorations(
-            typeHintDecorationType,
-            this.enabled ? decorations : [],
-        );
+    private renderDecorations(editor: RustEditor, decorations: InlaysDecorations) {
+        editor.setDecorations(typeHints.decorationType, decorations.type);
+        editor.setDecorations(paramHints.decorationType, decorations.param);
     }
 
-    private setParameterDecorations(
-        editor: vscode.TextEditor,
-        decorations: vscode.DecorationOptions[],
-    ) {
-        editor.setDecorations(
-            parameterHintDecorationType,
-            this.enabled ? decorations : [],
-        );
+    private hintsToDecorations(hints: ra.InlayHint[]): InlaysDecorations {
+        const decorations: InlaysDecorations = { type: [], param: [] };
+        const conv = this.ctx.client.protocol2CodeConverter;
+
+        for (const hint of hints) {
+            switch (hint.kind) {
+                case ra.InlayHint.Kind.TypeHint: {
+                    decorations.type.push(typeHints.toDecoration(hint, conv));
+                    continue;
+                }
+                case ra.InlayHint.Kind.ParamHint: {
+                    decorations.param.push(paramHints.toDecoration(hint, conv));
+                    continue;
+                }
+            }
+        }
+        return decorations;
     }
 
-    private async queryHints(documentUri: string): Promise<ra.InlayHint[] | null> {
-        this.pending.get(documentUri)?.cancel();
+    private async fetchHints(file: RustSourceFile): Promise<null | ra.InlayHint[]> {
+        file.inlaysRequest?.cancel();
 
         const tokenSource = new vscode.CancellationTokenSource();
-        this.pending.set(documentUri, tokenSource);
+        file.inlaysRequest = tokenSource;
 
-        const request = { textDocument: { uri: documentUri } };
+        const request = { textDocument: { uri: file.document.uri.toString() } };
 
         return sendRequestWithRetry(this.ctx.client, ra.inlayHints, request, tokenSource.token)
             .catch(_ => null)
             .finally(() => {
-                if (!tokenSource.token.isCancellationRequested) {
-                    this.pending.delete(documentUri);
+                if (file.inlaysRequest === tokenSource) {
+                    file.inlaysRequest = null;
                 }
             });
     }
 }
+
+interface InlaysDecorations {
+    type: vscode.DecorationOptions[];
+    param: vscode.DecorationOptions[];
+}
+
+interface RustSourceFile {
+    /*
+    * Source of the token to cancel in-flight inlay hints request if any.
+    */
+    inlaysRequest: null | vscode.CancellationTokenSource;
+    /**
+    * Last applied decorations.
+    */
+    cachedDecorations: null | InlaysDecorations;
+
+    document: RustDocument;
+}
diff --git a/editors/code/src/installation/interfaces.ts b/editors/code/src/installation/interfaces.ts
index e40839e4b..50b635921 100644
--- a/editors/code/src/installation/interfaces.ts
+++ b/editors/code/src/installation/interfaces.ts
@@ -14,14 +14,14 @@ export interface ArtifactReleaseInfo {
 }
 
 /**
- * Represents the source of a binary artifact which is either specified by the user
+ * Represents the source of a an artifact which is either specified by the user
  * explicitly, or bundled by this extension from GitHub releases.
  */
-export type BinarySource = BinarySource.ExplicitPath | BinarySource.GithubRelease;
+export type ArtifactSource = ArtifactSource.ExplicitPath | ArtifactSource.GithubRelease;
 
-export namespace BinarySource {
+export namespace ArtifactSource {
     /**
-     * Type tag for `BinarySource` discriminated union.
+     * Type tag for `ArtifactSource` discriminated union.
      */
     export const enum Type { ExplicitPath, GithubRelease }
 
@@ -56,13 +56,18 @@ export namespace BinarySource {
         /**
          * Tag of github release that denotes a version required by this extension.
          */
-        version: string;
+        tag: string;
 
         /**
          * Object that provides `get()/update()` operations to store metadata
          * about the actual binary, e.g. its actual version.
          */
         storage: vscode.Memento;
+
+        /**
+         * Ask for the user permission before downloading the artifact.
+         */
+        askBeforeDownload: boolean;
     }
 
 }
diff --git a/editors/code/src/installation/server.ts b/editors/code/src/installation/server.ts
index 6a6cf4f8c..ef1c45ff6 100644
--- a/editors/code/src/installation/server.ts
+++ b/editors/code/src/installation/server.ts
@@ -3,12 +3,12 @@ import * as path from "path";
 import { promises as dns } from "dns";
 import { spawnSync } from "child_process";
 
-import { BinarySource } from "./interfaces";
+import { ArtifactSource } from "./interfaces";
 import { fetchArtifactReleaseInfo } from "./fetch_artifact_release_info";
 import { downloadArtifact } from "./download_artifact";
 import { log, assert } from "../util";
 
-export async function ensureServerBinary(source: null | BinarySource): Promise<null | string> {
+export async function ensureServerBinary(source: null | ArtifactSource): Promise<null | string> {
     if (!source) {
         vscode.window.showErrorMessage(
             "Unfortunately we don't ship binaries for your platform yet. " +
@@ -22,7 +22,7 @@ export async function ensureServerBinary(source: null | BinarySource): Promise<n
     }
 
     switch (source.type) {
-        case BinarySource.Type.ExplicitPath: {
+        case ArtifactSource.Type.ExplicitPath: {
             if (isBinaryAvailable(source.path)) {
                 return source.path;
             }
@@ -34,11 +34,11 @@ export async function ensureServerBinary(source: null | BinarySource): Promise<n
             );
             return null;
         }
-        case BinarySource.Type.GithubRelease: {
+        case ArtifactSource.Type.GithubRelease: {
             const prebuiltBinaryPath = path.join(source.dir, source.file);
 
             const installedVersion: null | string = getServerVersion(source.storage);
-            const requiredVersion: string = source.version;
+            const requiredVersion: string = source.tag;
 
             log.debug("Installed version:", installedVersion, "required:", requiredVersion);
 
@@ -46,12 +46,14 @@ export async function ensureServerBinary(source: null | BinarySource): Promise<n
                 return prebuiltBinaryPath;
             }
 
-            const userResponse = await vscode.window.showInformationMessage(
-                `Language server version ${source.version} for rust-analyzer is not installed. ` +
-                "Do you want to download it now?",
-                "Download now", "Cancel"
-            );
-            if (userResponse !== "Download now") return null;
+            if (source.askBeforeDownload) {
+                const userResponse = await vscode.window.showInformationMessage(
+                    `Language server version ${source.tag} for rust-analyzer is not installed. ` +
+                    "Do you want to download it now?",
+                    "Download now", "Cancel"
+                );
+                if (userResponse !== "Download now") return null;
+            }
 
             if (!await downloadServer(source)) return null;
 
@@ -60,9 +62,9 @@ export async function ensureServerBinary(source: null | BinarySource): Promise<n
     }
 }
 
-async function downloadServer(source: BinarySource.GithubRelease): Promise<boolean> {
+async function downloadServer(source: ArtifactSource.GithubRelease): Promise<boolean> {
     try {
-        const releaseInfo = await fetchArtifactReleaseInfo(source.repo, source.file, source.version);
+        const releaseInfo = await fetchArtifactReleaseInfo(source.repo, source.file, source.tag);
 
         await downloadArtifact(releaseInfo, source.file, source.dir, "language server");
         await setServerVersion(source.storage, releaseInfo.releaseName);
diff --git a/editors/code/src/rust-analyzer-api.ts b/editors/code/src/rust-analyzer-api.ts
index c5a010e94..bd6e3ada0 100644
--- a/editors/code/src/rust-analyzer-api.ts
+++ b/editors/code/src/rust-analyzer-api.ts
@@ -86,14 +86,20 @@ export interface Runnable {
 export const runnables = request<RunnablesParams, Vec<Runnable>>("runnables");
 
 
-export const enum InlayKind {
-    TypeHint = "TypeHint",
-    ParameterHint = "ParameterHint",
-}
-export interface InlayHint {
-    range: lc.Range;
-    kind: InlayKind;
-    label: string;
+
+export type InlayHint = InlayHint.TypeHint | InlayHint.ParamHint;
+
+export namespace InlayHint {
+    export const enum Kind {
+        TypeHint = "TypeHint",
+        ParamHint = "ParameterHint",
+    }
+    interface Common {
+        range: lc.Range;
+        label: string;
+    }
+    export type TypeHint = Common & { kind: Kind.TypeHint };
+    export type ParamHint = Common & { kind: Kind.ParamHint };
 }
 export interface InlayHintsParams {
     textDocument: lc.TextDocumentIdentifier;
diff --git a/editors/code/src/util.ts b/editors/code/src/util.ts
index 7c95769bb..95a5f1227 100644
--- a/editors/code/src/util.ts
+++ b/editors/code/src/util.ts
@@ -1,7 +1,6 @@
 import * as lc from "vscode-languageclient";
 import * as vscode from "vscode";
 import { strict as nativeAssert } from "assert";
-import { TextDocument } from "vscode";
 
 export function assert(condition: boolean, explanation: string): asserts condition {
     try {
@@ -67,9 +66,16 @@ function sleep(ms: number) {
     return new Promise(resolve => setTimeout(resolve, ms));
 }
 
-export function isRustDocument(document: TextDocument) {
+export type RustDocument = vscode.TextDocument & { languageId: "rust" };
+export type RustEditor = vscode.TextEditor & { document: RustDocument; id: string };
+
+export function isRustDocument(document: vscode.TextDocument): document is RustDocument {
     return document.languageId === 'rust'
         // SCM diff views have the same URI as the on-disk document but not the same content
         && document.uri.scheme !== 'git'
         && document.uri.scheme !== 'svn';
-}
\ No newline at end of file
+}
+
+export function isRustEditor(editor: vscode.TextEditor): editor is RustEditor {
+    return isRustDocument(editor.document);
+}
diff --git a/xtask/src/dist.rs b/xtask/src/dist.rs
index 12bad820f..bb3593b11 100644
--- a/xtask/src/dist.rs
+++ b/xtask/src/dist.rs
@@ -27,7 +27,13 @@ fn dist_client(nightly: bool) -> Result<()> {
     let _restore =
         Restore { path: package_json_path.clone(), contents: original_package_json.clone() };
 
-    let mut package_json = original_package_json.replace(r#""enableProposedApi": true,"#, r#""#);
+    let date = run!("date --utc +%Y%m%d")?;
+    let version_suffix = if nightly { "-nightly" } else { "" };
+
+    let mut package_json = original_package_json.replace(
+        r#""version": "0.2.20200211-dev""#,
+        &format!(r#""version": "0.1.{}{}""#, date, version_suffix),
+    );
 
     if nightly {
         package_json = package_json.replace(
@@ -35,7 +41,7 @@ fn dist_client(nightly: bool) -> Result<()> {
             r#""displayName": "rust-analyzer nightly""#,
         );
     } else {
-        package_json = original_package_json.replace(r#""enableProposedApi": true,"#, r#""#);
+        package_json = package_json.replace(r#""enableProposedApi": true,"#, r#""#);
     }
     fs2::write(package_json_path, package_json)?;
 
@@ -47,10 +53,16 @@ fn dist_client(nightly: bool) -> Result<()> {
 fn dist_server() -> Result<()> {
     if cfg!(target_os = "linux") {
         std::env::set_var("CC", "clang");
-        run!("cargo build --package rust-analyzer --bin rust-analyzer --release --target x86_64-unknown-linux-musl")?;
+        run!(
+            "cargo build --manifest-path ./crates/rust-analyzer/Cargo.toml --bin rust-analyzer --release
+             --target x86_64-unknown-linux-musl
+            "
+            // We'd want to add, but that requires setting the right linker somehow
+            // --features=jemalloc
+        )?;
         run!("strip ./target/x86_64-unknown-linux-musl/release/rust-analyzer")?;
     } else {
-        run!("cargo build --package rust-analyzer --bin rust-analyzer --release")?;
+        run!("cargo build --manifest-path ./crates/rust-analyzer/Cargo.toml --bin rust-analyzer --release")?;
     }
 
     let (src, dst) = if cfg!(target_os = "linux") {