Merge pull request #1063 from aurieh/master

Add dart LSP (resolves #1006)

README.md

@@ -87,7 +87,7 @@ formatting.
 | CSS | [csslint](http://csslint.net/), [stylelint](https://github.com/stylelint/stylelint), [prettier](https://github.com/prettier/prettier) |
 | Cython (pyrex filetype) | [cython](http://cython.org/) |
 | D | [dmd](https://dlang.org/dmd-linux.html) |
-| Dart | [dartanalyzer](https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli) !! |
+| Dart | [dartanalyzer](https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli) !!, [language_server](https://github.com/natebosch/dart_language_server) |
 | Dockerfile | [hadolint](https://github.com/lukasmartinelli/hadolint) |
 | Elixir | [credo](https://github.com/rrrene/credo), [dogma](https://github.com/lpil/dogma) !! |
 | Elm | [elm-format](https://github.com/avh4/elm-format), [elm-make](https://github.com/elm-lang/elm-make) |

ale_linters/dart/language_server.vim

@@ -0,0 +1,30 @@
+" Author: aurieh <me@aurieh.me>
+" Description: A language server for dart
+
+call ale#Set('dart_language_server_executable', 'dart_language_server')
+
+function! ale_linters#dart#language_server#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'dart_language_server_executable')
+endfunction
+
+function! ale_linters#dart#language_server#GetLanguage(buffer) abort
+    return 'dart'
+endfunction
+
+function! ale_linters#dart#language_server#GetProjectRoot(buffer) abort
+    " Note: pub only looks for pubspec.yaml, there's no point in adding
+    " support for pubspec.yml
+    let l:pubspec = ale#path#FindNearestFile(a:buffer, 'pubspec.yaml')
+
+    return !empty(l:pubspec) ? fnamemodify(l:pubspec, ':h:h') : ''
+endfunction
+
+call ale#linter#Define('dart', {
+\   'name': 'language_server',
+\   'lsp': 'stdio',
+\   'executable_callback': 'ale_linters#dart#language_server#GetExecutable',
+\   'command_callback': 'ale_linters#dart#language_server#GetExecutable',
+\   'language_callback': 'ale_linters#dart#language_server#GetLanguage',
+\   'project_root_callback': 'ale_linters#dart#language_server#GetProjectRoot',
+\})
+

doc/ale.txt

@@ -270,7 +270,7 @@ Notes:
 * CSS: `csslint`, `stylelint`, `prettier`
 * Cython (pyrex filetype): `cython`
 * D: `dmd`
-* Dart: `dartanalyzer`!!
+* Dart: `dartanalyzer`!!, `language_server`
 * Dockerfile: `hadolint`
 * Elixir: `credo`, `dogma`!!
 * Elm: `elm-format, elm-make`