Add Elvis handler for Erlang

[Elvis][1] is an Erlang style reviewer.

[1]: https://github.com/inaka/elvis

1 files changed, 39 insertions, 0 deletions

diff --git a/ale_linters/erlang/elvis.vim b/ale_linters/erlang/elvis.vim
new file mode 100644
index 00000000..31dea3dd
--- /dev/null
+++ b/ale_linters/erlang/elvis.vim
@@ -0,0 +1,39 @@
+" Author: Dmitri Vereshchagin <dmitri.vereshchagin@gmail.com>
+" Description: Elvis linter for Erlang files
+
+call ale#Set('erlang_elvis_executable', 'elvis')
+
+function! ale_linters#erlang#elvis#Handle(buffer, lines) abort
+    let l:pattern = '\v:(\d+):[^:]+:(.+)'
+    let l:loclist = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:loclist, {
+        \   'lnum': str2nr(l:match[1]),
+        \   'text': s:AbbreviateMessage(l:match[2]),
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:loclist
+endfunction
+
+function! s:AbbreviateMessage(text) abort
+    let l:pattern = '\v\c^(line \d+ is too long):.*$'
+
+    return substitute(a:text, l:pattern, '\1.', '')
+endfunction
+
+function! s:GetCommand(buffer) abort
+    let l:file = ale#Escape(expand('#' . a:buffer . ':.'))
+
+    return '%e rock --output-format=parsable ' . l:file
+endfunction
+
+call ale#linter#Define('erlang', {
+\   'name': 'elvis',
+\   'callback': 'ale_linters#erlang#elvis#Handle',
+\   'executable': {b -> ale#Var(b, 'erlang_elvis_executable')},
+\   'command': function('s:GetCommand'),
+\   'lint_file': 1,
+\})