Add Elixir support (#57)

* Add Elixir support

This PR (attempts) to add support for Elixir by adding the dependency on the
official Elixir tree-sitter grammar.

I've been unable to build this on any machine for some reason, it looks like
Emscripten is failing on the linker step. I'd appreciate any insight and
testing!

The output is below; yarn was failing to even run `yarn add -D` due to the
preinstall step:

```
$ make web-tree-sitter
/Users/shawa/Projects/cursorless/vscode-parse-tree/.make-work/tree-sitter
/Users/shawa/Projects/cursorless/vscode-parse-tree/.make-work/tree-sitter
Unable to find image 'emscripten/emsdk:2.0.24' locally
2.0.24: Pulling from emscripten/emsdk
345e3491a907: Pull complete
57671312ef6f: Pull complete
5e9250ddb7d0: Pull complete
859aa499d6fa: Pull complete
04e009ac95c8: Pull complete
5bfdbd9279e5: Pull complete
ac435eb7f4a4: Pull complete
Digest: sha256:81ec54b7a096d28f24d906955dbf98ff336cca47658d980c243baa36f6484f9f
Status: Downloaded newer image for emscripten/emsdk:2.0.24
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libGL.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libGL.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libal.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libal.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libhtml5.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libhtml5.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libc.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libc.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libcompiler_rt.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libcompiler_rt.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libc++-noexcept.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libc++-noexcept.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libc++abi-noexcept.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libc++abi-noexcept.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libdlmalloc.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libdlmalloc.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libc_rt_wasm.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libc_rt_wasm.a" for subsequent builds)
cache:INFO:  - ok
cache:INFO: generating system library: sysroot/lib/wasm32-emscripten/pic/libsockets.a... (this will be cached in "/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic/libsockets.a" for subsequent builds)
cache:INFO:  - ok
emcc: error: undefined exported symbol: "___cxa_atexit" [-Wundefined] [-Werror]
make: *** [vendor/web-tree-sitter/0.20.4/README.md] Error 1
error Command failed with exit code 2.
```

* Update yarn.lock

Co-authored-by: shawa <[email protected]>
Co-authored-by: Pokey Rule <[email protected]>

Author: 3 people

Makefile

@@ -1,6 +1,6 @@
 # For generating .wasm files for parsers
 # See https://www.npmjs.com/package/web-tree-sitter
-LANGUAGES = agda bash c c-sharp clojure cpp css elm go haskell html java javascript json kotlin latex markdown php python query ruby rust scala scss sparql talon tsx typescript yaml
+LANGUAGES = agda bash c c-sharp clojure cpp css elm elixir go haskell html java javascript json kotlin latex markdown php python query ruby rust scala scss sparql talon tsx typescript yaml
 
 
 # NOTE: Update the version number in the filepath for web-tree-sitter in package.json,

package.json

@@ -29,6 +29,7 @@
 		"onLanguage:css",
 		"onLanguage:csharp",
 		"onLanguage:elm",
+		"onLanguage:elixir",
 		"onLanguage:go",
 		"onLanguage:haskell",
 		"onLanguage:html",
@@ -93,6 +94,7 @@
 		"tree-sitter-cpp": "^0.19.0",
 		"@elm-tooling/tree-sitter-elm": "github:elm-tooling/tree-sitter-elm#0aecfbf69f0c9bcdfada0f6f2c5398235c23949f",
 		"tree-sitter-go": "^0.19.0",
+		"tree-sitter-elixir": "github:elixir-lang/tree-sitter-elixir#b20eaa75565243c50be5e35e253d8beb58f45d56",
 		"tree-sitter-haskell": "github:tree-sitter/tree-sitter-haskell#d6ccd2d9c40bdec29fee0027ef04fe5ff1ae4ceb",
 		"tree-sitter-html": "^0.19.0",
 		"tree-sitter-java": "github:tree-sitter/tree-sitter-java#ac14b4b1884102839455d32543ab6d53ae089ab7",

src/extension.ts

@@ -19,6 +19,7 @@ const languages: {
   csharp: { module: "tree-sitter-c-sharp" },
   css: { module: "tree-sitter-css" },
   elm: { module: "tree-sitter-elm" },
+  elixir: { module: "tree-sitter-elixir" },
   go: { module: "tree-sitter-go" },
   haskell: { module: "tree-sitter-haskell" },
   html: { module: "tree-sitter-html" },

yarn.lock

@@ -2444,6 +2444,12 @@ tree-sitter-css@^0.19.0:
   dependencies:
     nan "^2.14.1"
 
+"tree-sitter-elixir@github:elixir-lang/tree-sitter-elixir#b20eaa75565243c50be5e35e253d8beb58f45d56":
+  version "0.19.0"
+  resolved "https://codeload.github.com/elixir-lang/tree-sitter-elixir/tar.gz/b20eaa75565243c50be5e35e253d8beb58f45d56"
+  dependencies:
+    nan "^2.15.0"
+
 tree-sitter-go@^0.19.0:
   version "0.19.1"
   resolved "https://registry.yarnpkg.com/tree-sitter-go/-/tree-sitter-go-0.19.1.tgz#f23c84bff882eafa296ce2d307366e76f1f83e2d"