13 files changed, 215 insertions, 136 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 779580762..81dd812f4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,11 +17,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "arrayref"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
 name = "arrayvec"
 version = "0.4.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -99,16 +94,26 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "block-buffer"
-version = "0.3.3"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "block-padding 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "block-padding"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "byte-tools"
-version = "0.2.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -203,7 +208,7 @@ dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "termios 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -265,7 +270,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -280,10 +285,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "digest"
-version = "0.7.6"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -338,7 +343,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -365,7 +370,7 @@ dependencies = [
  "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -432,7 +437,7 @@ dependencies = [
 
 [[package]]
 name = "generic-array"
-version = "0.9.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -485,7 +490,7 @@ dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "number_prefix 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -517,7 +522,7 @@ dependencies = [
  "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pest 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest_derive 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ron 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -742,7 +747,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -775,6 +780,11 @@ dependencies = [
 ]
 
 [[package]]
+name = "opaque-debug"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "owning_ref"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -810,7 +820,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "pest"
-version = "2.1.0"
+version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ucd-trie 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -821,7 +831,7 @@ name = "pest_derive"
 version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pest 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest_generator 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -830,21 +840,21 @@ name = "pest_generator"
 version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "pest_meta 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pest 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pest_meta 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "pest_meta"
-version = "2.1.0"
+version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "maplit 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha-1 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pest 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sha-1 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -913,7 +923,7 @@ dependencies = [
  "ra_hir 0.1.0",
  "ra_project_model 0.1.0",
  "ra_syntax 0.1.0",
- "ra_vfs 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ra_vfs 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "test_utils 0.1.0",
 ]
@@ -1025,7 +1035,7 @@ dependencies = [
  "ra_project_model 0.1.0",
  "ra_syntax 0.1.0",
  "ra_text_edit 0.1.0",
- "ra_vfs 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ra_vfs 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "relative-path 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1115,7 +1125,7 @@ dependencies = [
 
 [[package]]
 name = "ra_vfs"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-channel 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1267,7 +1277,7 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.1.5"
+version = "1.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1368,7 +1378,7 @@ dependencies = [
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1413,7 +1423,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1439,13 +1449,13 @@ dependencies = [
 
 [[package]]
 name = "sha-1"
-version = "0.7.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "block-buffer 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "block-buffer 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fake-simd 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "opaque-debug 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1491,7 +1501,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syn"
-version = "0.15.30"
+version = "0.15.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1506,7 +1516,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1533,9 +1543,9 @@ dependencies = [
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "humansize 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pest 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest_derive 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "slug 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1851,7 +1861,6 @@ dependencies = [
 [metadata]
 "checksum aho-corasick 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e6f484ae0c99fec2e858eb6134949117399f222608d84cadb3f58c1f97c2364c"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-"checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
 "checksum arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "92c7fb76bc8826a8b33b4ee5bb07a247a81e76764ab4d55e8f73e3a4d8808c71"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 "checksum autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a6d640bee2da49f60a4068a7fae53acde8982514ab7bae8b8cea9e88cbcfd799"
@@ -1862,8 +1871,9 @@ dependencies = [
 "checksum bit-vec 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f59bbe95d4e52a6398ec21238d31577f2b28a9d86807f06ca59d191d8440d0bb"
 "checksum bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aad18937a628ec6abcd26d1489012cc0e18c21798210f491af69ded9b881106d"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
-"checksum block-buffer 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a076c298b9ecdb530ed9d967e74a6027d6a7478924520acddcddc24c1c8ab3ab"
-"checksum byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "560c32574a12a89ecd91f5e742165893f86e3ab98d21f8ea548658eb9eef5f40"
+"checksum block-buffer 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
+"checksum block-padding 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d75255892aeb580d3c566f213a2b6fdc1c66667839f45719ee1d30ebf2aea591"
+"checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
 "checksum cargo_metadata 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "178d62b240c34223f265a4c1e275e37d62da163d421fc8d7f7e3ee340f803c57"
 "checksum cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)" = "5e5f3fee5eeb60324c2781f1e41286bdee933850fff9b3c672587fed5ec58c83"
@@ -1883,7 +1893,7 @@ dependencies = [
 "checksum derive-new 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "6ca414e896ae072546f4d789f452daaecf60ddee4c9df5dc6d5936d769e3d87c"
 "checksum deunicode 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "850878694b7933ca4c9569d30a34b55031b9b139ee1fc7b94a527c4ef960d690"
 "checksum difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
-"checksum digest 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "03b072242a8cbaf9c145665af9d250c59af3b958f83ed6824e13533cf76d5b90"
+"checksum digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05f47366984d3ad862010e22c7ce81a7dbcaebbdfb37241a620f8b6596ee135c"
 "checksum drop_bomb 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "69b26e475fd29098530e709294e94e661974c851aed42512793f120fed4e199f"
 "checksum dtoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6d301140eb411af13d3115f9a562c85cc6b541ade9dfa314132244aaee7489dd"
 "checksum either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5527cfe0d098f36e3f8839852688e63c8fff1c90b2b405aef730615f9a7bcf7b"
@@ -1902,7 +1912,7 @@ dependencies = [
 "checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
-"checksum generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ef25c5683767570c2bbd7deba372926a55eaae9982d7726ee2a1050239d45b9d"
+"checksum generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3c0f28c2f5bfb5960175af447a2da7c18900693738343dc896ffbcabd9839592"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
@@ -1943,19 +1953,20 @@ dependencies = [
 "checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
 "checksum num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1a23f0ed30a54abaa0c7e83b1d2d87ada7c3c23078d1d87815af3e3b6385fbba"
 "checksum number_prefix 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "dbf9993e59c894e3c08aa1c2712914e9e6bf1fcbfc6bef283e2183df345a4fee"
+"checksum opaque-debug 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "93f5bb2e8e8dec81642920ccff6b61f1eb94fa3020c5a325c9851ff604152409"
 "checksum owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49a4b8ea2179e6a2e27411d3bca09ca6dd630821cf6894c6c7c8467a8ee7ef13"
 "checksum parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab41b4aed082705d1056416ae4468b6ea99d52599ecf3169b00088d43113e337"
 "checksum parking_lot_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94c8c7923936b28d546dfd14d4472eaf34c99b14e1c973a32b3e6d4eb04298c9"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
-"checksum pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "54f0c72a98d8ab3c99560bfd16df8059cc10e1f9a8e83e6e3b97718dd766e9c3"
+"checksum pest 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "933085deae3f32071f135d799d75667b63c8dc1f4537159756e3d4ceab41868c"
 "checksum pest_derive 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "833d1ae558dc601e9a60366421196a8d94bc0ac980476d0b67e1d0988d72b2d0"
 "checksum pest_generator 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "63120576c4efd69615b5537d3d052257328a4ca82876771d6944424ccfd9f646"
-"checksum pest_meta 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f5a3492a4ed208ffc247adcdcc7ba2a95be3104f58877d0d02f0df39bf3efb5e"
+"checksum pest_meta 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f249ea6de7c7b7aba92b4ff4376a994c6dbd98fd2166c89d5c4947397ecb574d"
 "checksum proc-macro2 0.4.27 (registry+https://github.com/rust-lang/crates.io-index)" = "4d317f9caece796be1980837fd5cb3dfec5613ebdb04ad0956deea83ce168915"
 "checksum proptest 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "24f5844db2f839e97e3021980975f6ebf8691d9b9b2ca67ed3feb38dc3edb52c"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
-"checksum ra_vfs 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "411d8ce8abf262b08421e6446c4fd5b420206cf221cd21fcfc793445fb3825b2"
+"checksum ra_vfs 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a36512521aefbd2c76314c97b19b1f8377bd7ea770e3d6910c3fb68fe615f806"
 "checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
 "checksum rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "556d3a1ca6600bfcbab7c7c91ccb085ac7fbbcd70e008a98742e7847f4f7bcef"
 "checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
@@ -1971,7 +1982,7 @@ dependencies = [
 "checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
 "checksum redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)" = "12229c14a0f65c4f1cb046a3b52047cdd9da1f4b30f8a39c5063c8bae515e252"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
-"checksum regex 1.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "559008764a17de49a3146b234641644ed37d118d1ef641a0bb573d146edc6ce0"
+"checksum regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "8f0a0bcab2fd7d1d7c54fa9eae6f43eddeb9ce2e7352f8518a814a4f65d60c58"
 "checksum regex-syntax 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)" = "dcfd8681eebe297b81d98498869d4aae052137651ad7b96822f09ceb690d0a96"
 "checksum relative-path 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0e7790c7f1cc73d831d28dc5a7deb316a006e7848e6a7f467cdb10a0a9e0fb1c"
 "checksum remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3488ba1b9a2084d38645c4c08276a1752dcbf2c7130d74f1569681ad5d2799c5"
@@ -1991,7 +2002,7 @@ dependencies = [
 "checksum serde_derive 1.0.90 (registry+https://github.com/rust-lang/crates.io-index)" = "58fc82bec244f168b23d1963b45c8bf5726e9a15a9d146a067f9081aeed2de79"
 "checksum serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)" = "5a23aa71d4a4d43fdbfaac00eff68ba8a06a51759a89ac3304323e800c4dd40d"
 "checksum serde_yaml 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)" = "0887a8e097a69559b56aa2526bf7aff7c3048cf627dff781f0b56a6001534593"
-"checksum sha-1 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "51b9d1f3b5de8a167ab06834a7c883bd197f2191e1dda1a22d9ccfeedbf9aded"
+"checksum sha-1 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "23962131a91661d643c98940b20fcaffe62d776a823247be80a48fcb8b6fce68"
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum slug 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b3bc762e6a4b6c6fcaade73e77f9ebc6991b676f88bb2358bddb56560f073373"
 "checksum smallvec 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "c4488ae950c49d403731982257768f48fada354a5203fe81f9bb6f43ca9002be"
@@ -1999,7 +2010,7 @@ dependencies = [
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum superslice 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ab16ced94dbd8a46c82fd81e3ed9a8727dac2977ea869d217bcc4ea1f122e81f"
-"checksum syn 0.15.30 (registry+https://github.com/rust-lang/crates.io-index)" = "66c8865bf5a7cbb662d8b011950060b3c8743dca141b054bf7195b20d314d8e2"
+"checksum syn 0.15.31 (registry+https://github.com/rust-lang/crates.io-index)" = "d2b4cfac95805274c6afdb12d8f770fa2d27c045953e7b630a81801953699a9a"
 "checksum synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "73687139bf99285483c96ac0add482c3776528beac1d97d444f6e91f203a2015"
 "checksum tempfile 3.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "b86c784c88d98c801132806dadd3819ed29d8600836c4088e855cdf3e178ed8a"
 "checksum tera 0.11.20 (registry+https://github.com/rust-lang/crates.io-index)" = "4b505279e19d8f7d24b1a9dc58327c9c36174b1a2c7ebdeac70792d017cb64f3"
diff --git a/crates/gen_lsp_server/src/stdio.rs b/crates/gen_lsp_server/src/stdio.rs
index dab2d8da8..2d6418400 100644
--- a/crates/gen_lsp_server/src/stdio.rs
+++ b/crates/gen_lsp_server/src/stdio.rs
@@ -5,6 +5,7 @@ use std::{
 
 use crossbeam_channel::{bounded, Receiver, Sender};
 use failure::bail;
+use lsp_types::notification::Exit;
 
 use crate::{RawMessage, Result};
 
@@ -21,7 +22,14 @@ pub fn stdio_transport() -> (Receiver<RawMessage>, Sender<RawMessage>, Threads)
         let stdin = stdin();
         let mut stdin = stdin.lock();
         while let Some(msg) = RawMessage::read(&mut stdin)? {
-            if let Err(_) = reader_sender.send(msg) {
+            let is_exit = match &msg {
+                RawMessage::Notification(n) => n.is::<Exit>(),
+                _ => false,
+            };
+
+            reader_sender.send(msg).unwrap();
+
+            if is_exit {
                 break;
             }
         }
diff --git a/crates/ra_lsp_server/tests/heavy_tests/support.rs b/crates/ra_lsp_server/tests/heavy_tests/support.rs
index b07882700..d68182174 100644
--- a/crates/ra_lsp_server/tests/heavy_tests/support.rs
+++ b/crates/ra_lsp_server/tests/heavy_tests/support.rs
@@ -77,7 +77,7 @@ pub struct Server {
     req_id: Cell<u64>,
     messages: RefCell<Vec<RawMessage>>,
     dir: TempDir,
-    worker: Option<Worker<RawMessage, RawMessage>>,
+    worker: Worker<RawMessage, RawMessage>,
 }
 
 impl Server {
@@ -99,12 +99,7 @@ impl Server {
                 .unwrap()
             },
         );
-        let res = Server {
-            req_id: Cell::new(1),
-            dir,
-            messages: Default::default(),
-            worker: Some(worker),
-        };
+        let res = Server { req_id: Cell::new(1), dir, messages: Default::default(), worker };
 
         for (path, text) in files {
             res.send_notification(RawNotification::new::<DidOpenTextDocument>(
@@ -157,7 +152,7 @@ impl Server {
     }
     fn send_request_(&self, r: RawRequest) -> Value {
         let id = r.id;
-        self.worker.as_ref().unwrap().sender().send(RawMessage::Request(r)).unwrap();
+        self.worker.sender().send(RawMessage::Request(r)).unwrap();
         while let Some(msg) = self.recv() {
             match msg {
                 RawMessage::Request(req) => panic!("unexpected request: {:?}", req),
@@ -197,13 +192,13 @@ impl Server {
         }
     }
     fn recv(&self) -> Option<RawMessage> {
-        recv_timeout(&self.worker.as_ref().unwrap().receiver()).map(|msg| {
+        recv_timeout(&self.worker.receiver()).map(|msg| {
             self.messages.borrow_mut().push(msg.clone());
             msg
         })
     }
     fn send_notification(&self, not: RawNotification) {
-        self.worker.as_ref().unwrap().sender().send(RawMessage::Notification(not)).unwrap();
+        self.worker.sender().send(RawMessage::Notification(not)).unwrap();
     }
 
     pub fn path(&self) -> &Path {
diff --git a/crates/ra_mbe/src/lib.rs b/crates/ra_mbe/src/lib.rs
index a530f3b03..a1f438906 100644
--- a/crates/ra_mbe/src/lib.rs
+++ b/crates/ra_mbe/src/lib.rs
@@ -582,4 +582,19 @@ SOURCE_FILE@[0; 40)
         );
         assert_expansion(&rules, "foo! { (a, b) }", "fn foo () {let (a , b) ;}");
     }
+
+    #[test]
+    fn test_stmt() {
+        let rules = create_rules(
+            r#"
+        macro_rules! foo {
+            ($ i:stmt) => (
+                fn bar() { $ i; }
+            )
+        }
+"#,
+        );
+        assert_expansion(&rules, "foo! { 2 }", "fn bar () {2 ;}");
+        assert_expansion(&rules, "foo! { let a = 0 }", "fn bar () {let a = 0 ;}");
+    }
 }
diff --git a/crates/ra_mbe/src/mbe_expander.rs b/crates/ra_mbe/src/mbe_expander.rs
index 7a259f338..7587b575d 100644
--- a/crates/ra_mbe/src/mbe_expander.rs
+++ b/crates/ra_mbe/src/mbe_expander.rs
@@ -157,6 +157,10 @@ fn match_lhs(pattern: &crate::Subtree, input: &mut TtCursor) -> Result<Bindings,
                             let pat = input.eat_pat().ok_or(ExpandError::UnexpectedToken)?.clone();
                             res.inner.insert(text.clone(), Binding::Simple(pat.into()));
                         }
+                        "stmt" => {
+                            let pat = input.eat_stmt().ok_or(ExpandError::UnexpectedToken)?.clone();
+                            res.inner.insert(text.clone(), Binding::Simple(pat.into()));
+                        }
                         _ => return Err(ExpandError::UnexpectedToken),
                     }
                 }
diff --git a/crates/ra_mbe/src/subtree_parser.rs b/crates/ra_mbe/src/subtree_parser.rs
index 13d5d2169..f075ce245 100644
--- a/crates/ra_mbe/src/subtree_parser.rs
+++ b/crates/ra_mbe/src/subtree_parser.rs
@@ -42,6 +42,10 @@ impl<'a> Parser<'a> {
         self.parse(ra_parser::parse_pat)
     }
 
+    pub fn parse_stmt(self) -> Option<tt::TokenTree> {
+        self.parse(|src, sink| ra_parser::parse_stmt(src, sink, false))
+    }
+
     fn parse<F>(self, f: F) -> Option<tt::TokenTree>
     where
         F: FnOnce(&dyn TokenSource, &mut dyn TreeSink),
diff --git a/crates/ra_mbe/src/tt_cursor.rs b/crates/ra_mbe/src/tt_cursor.rs
index f6cefe087..adfe5520d 100644
--- a/crates/ra_mbe/src/tt_cursor.rs
+++ b/crates/ra_mbe/src/tt_cursor.rs
@@ -99,6 +99,11 @@ impl<'a> TtCursor<'a> {
         parser.parse_pat()
     }
 
+    pub(crate) fn eat_stmt(&mut self) -> Option<tt::TokenTree> {
+        let parser = Parser::new(&mut self.pos, self.subtree);
+        parser.parse_stmt()
+    }
+
     pub(crate) fn expect_char(&mut self, char: char) -> Result<(), ParseError> {
         if self.at_char(char) {
             self.bump();
diff --git a/crates/ra_parser/src/grammar.rs b/crates/ra_parser/src/grammar.rs
index 5a7a55141..2c2f785d0 100644
--- a/crates/ra_parser/src/grammar.rs
+++ b/crates/ra_parser/src/grammar.rs
@@ -65,6 +65,10 @@ pub(crate) fn pattern(p: &mut Parser) {
     patterns::pattern(p)
 }
 
+pub(crate) fn stmt(p: &mut Parser, with_semi: bool) {
+    expressions::stmt(p, with_semi)
+}
+
 pub(crate) fn reparser(
     node: SyntaxKind,
     first_child: Option<SyntaxKind>,
diff --git a/crates/ra_parser/src/grammar/expressions.rs b/crates/ra_parser/src/grammar/expressions.rs
index 295577325..06f2b45b1 100644
--- a/crates/ra_parser/src/grammar/expressions.rs
+++ b/crates/ra_parser/src/grammar/expressions.rs
@@ -48,88 +48,77 @@ fn is_expr_stmt_attr_allowed(kind: SyntaxKind) -> bool {
     }
 }
 
-pub(crate) fn expr_block_contents(p: &mut Parser) {
-    // This is checked by a validator
-    attributes::inner_attributes(p);
-
-    while !p.at(EOF) && !p.at(R_CURLY) {
-        // test nocontentexpr
-        // fn foo(){
-        //     ;;;some_expr();;;;{;;;};;;;Ok(())
-        // }
-        if p.current() == SEMI {
-            p.bump();
-            continue;
-        }
+pub(super) fn stmt(p: &mut Parser, with_semi: bool) {
+    // test block_items
+    // fn a() { fn b() {} }
+    let m = p.start();
+    // test attr_on_expr_stmt
+    // fn foo() {
+    //     #[A] foo();
+    //     #[B] bar!{}
+    //     #[C] #[D] {}
+    //     #[D] return ();
+    // }
+    let has_attrs = p.at(POUND);
+    attributes::outer_attributes(p);
 
-        // test block_items
-        // fn a() { fn b() {} }
-        let m = p.start();
-        // test attr_on_expr_stmt
-        // fn foo() {
-        //     #[A] foo();
-        //     #[B] bar!{}
-        //     #[C] #[D] {}
-        //     #[D] return ();
-        // }
-        let has_attrs = p.at(POUND);
-        attributes::outer_attributes(p);
-        if p.at(LET_KW) {
-            let_stmt(p, m);
-            continue;
-        }
+    if p.at(LET_KW) {
+        let_stmt(p, m, with_semi);
+        return;
+    }
 
-        let m = match items::maybe_item(p, m, items::ItemFlavor::Mod) {
-            Ok(()) => continue,
-            Err(m) => m,
-        };
+    let m = match items::maybe_item(p, m, items::ItemFlavor::Mod) {
+        Ok(()) => return,
+        Err(m) => m,
+    };
 
-        let (cm, blocklike) = expr_stmt(p);
-        let kind = cm.as_ref().map(|cm| cm.kind()).unwrap_or(ERROR);
+    let (cm, blocklike) = expr_stmt(p);
+    let kind = cm.as_ref().map(|cm| cm.kind()).unwrap_or(ERROR);
 
-        if has_attrs && !is_expr_stmt_attr_allowed(kind) {
-            // test_err attr_on_expr_not_allowed
-            // fn foo() {
-            //    #[A] 1 + 2;
-            //    #[B] if true {};
-            // }
-            p.error(format!("attributes are not allowed on {:?}", kind));
-        }
+    if has_attrs && !is_expr_stmt_attr_allowed(kind) {
+        // test_err attr_on_expr_not_allowed
+        // fn foo() {
+        //    #[A] 1 + 2;
+        //    #[B] if true {};
+        // }
+        p.error(format!("attributes are not allowed on {:?}", kind));
+    }
 
-        if p.at(R_CURLY) {
-            // test attr_on_last_expr_in_block
-            // fn foo() {
-            //     { #[A] bar!()? }
-            //     #[B] &()
-            // }
-            if let Some(cm) = cm {
-                cm.undo_completion(p).abandon(p);
-                m.complete(p, kind);
-            } else {
-                m.abandon(p);
-            }
+    if p.at(R_CURLY) {
+        // test attr_on_last_expr_in_block
+        // fn foo() {
+        //     { #[A] bar!()? }
+        //     #[B] &()
+        // }
+        if let Some(cm) = cm {
+            cm.undo_completion(p).abandon(p);
+            m.complete(p, kind);
         } else {
-            // test no_semi_after_block
-            // fn foo() {
-            //     if true {}
-            //     loop {}
-            //     match () {}
-            //     while true {}
-            //     for _ in () {}
-            //     {}
-            //     {}
-            //     macro_rules! test {
-            //          () => {}
-            //     }
-            //     test!{}
-            // }
+            m.abandon(p);
+        }
+    } else {
+        // test no_semi_after_block
+        // fn foo() {
+        //     if true {}
+        //     loop {}
+        //     match () {}
+        //     while true {}
+        //     for _ in () {}
+        //     {}
+        //     {}
+        //     macro_rules! test {
+        //          () => {}
+        //     }
+        //     test!{}
+        // }
+        if with_semi {
             if blocklike.is_block() {
                 p.eat(SEMI);
             } else {
                 p.expect(SEMI);
             }
-            m.complete(p, EXPR_STMT);
         }
+        m.complete(p, EXPR_STMT);
     }
 
     // test let_stmt;
@@ -139,7 +128,7 @@ pub(crate) fn expr_block_contents(p: &mut Parser) {
     //     let c = 92;
     //     let d: i32 = 92;
     // }
-    fn let_stmt(p: &mut Parser, m: Marker) {
+    fn let_stmt(p: &mut Parser, m: Marker, with_semi: bool) {
         assert!(p.at(LET_KW));
         p.bump();
         patterns::pattern(p);
@@ -149,11 +138,32 @@ pub(crate) fn expr_block_contents(p: &mut Parser) {
         if p.eat(EQ) {
             expressions::expr(p);
         }
-        p.expect(SEMI);
+
+        if with_semi {
+            p.expect(SEMI);
+        }
         m.complete(p, LET_STMT);
     }
 }
 
+pub(crate) fn expr_block_contents(p: &mut Parser) {
+    // This is checked by a validator
+    attributes::inner_attributes(p);
+
+    while !p.at(EOF) && !p.at(R_CURLY) {
+        // test nocontentexpr
+        // fn foo(){
+        //     ;;;some_expr();;;;{;;;};;;;Ok(())
+        // }
+        if p.current() == SEMI {
+            p.bump();
+            continue;
+        }
+
+        stmt(p, true)
+    }
+}
+
 #[derive(Clone, Copy)]
 struct Restrictions {
     forbid_structs: bool,
diff --git a/crates/ra_parser/src/lib.rs b/crates/ra_parser/src/lib.rs
index 56755c394..9133c1b8a 100644
--- a/crates/ra_parser/src/lib.rs
+++ b/crates/ra_parser/src/lib.rs
@@ -88,6 +88,11 @@ pub fn parse_pat(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink) {
     parse_from_tokens(token_source, tree_sink, grammar::pattern);
 }
 
+/// Parse given tokens into the given sink as a statement
+pub fn parse_stmt(token_source: &dyn TokenSource, tree_sink: &mut dyn TreeSink, with_semi: bool) {
+    parse_from_tokens(token_source, tree_sink, |p| grammar::stmt(p, with_semi));
+}
+
 /// A parsing function for a specific braced-block.
 pub struct Reparser(fn(&mut parser::Parser));
 
diff --git a/editors/code/package.json b/editors/code/package.json
index 1c8caaa60..a0454191a 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -114,6 +114,11 @@
                 "command": "rust-analyzer.collectGarbage",
                 "title": "Run garbage collection",
                 "category": "Rust Analyzer"
+            },
+            {
+                "command": "rust-analyzer.reload",
+                "title": "Restart server",
+                "category": "Rust Analyzer"
             }
         ],
         "keybindings": [
diff --git a/editors/code/src/extension.ts b/editors/code/src/extension.ts
index ef83c0b8b..1073a36a0 100644
--- a/editors/code/src/extension.ts
+++ b/editors/code/src/extension.ts
@@ -120,11 +120,16 @@ export function activate(context: vscode.ExtensionContext) {
         context.subscriptions
     );
 
+    const startServer = () => Server.start(allNotifications);
+    const reloadCommand = () => reloadServer(startServer);
+
+    vscode.commands.registerCommand('rust-analyzer.reload', reloadCommand);
+
     // Executing `cargo watch` provides us with inline diagnostics on save
     interactivelyStartCargoWatch(context);
 
     // Start the language server, finally!
-    Server.start(allNotifications);
+    startServer();
 }
 
 export function deactivate(): Thenable<void> {
@@ -133,3 +138,11 @@ export function deactivate(): Thenable<void> {
     }
     return Server.client.stop();
 }
+
+async function reloadServer(startServer: () => void) {
+    if (Server.client != null) {
+        vscode.window.showInformationMessage('Reloading rust-analyzer...');
+        await Server.client.stop();
+        startServer();
+    }
+}
diff --git a/editors/code/src/utils/terminateProcess.sh b/editors/code/src/utils/terminateProcess.sh
index 2ec9e1c2e..2ec9e1c2e 100644..100755
--- a/editors/code/src/utils/terminateProcess.sh
+++ b/editors/code/src/utils/terminateProcess.sh