debride: Add debride linter (closes #2471)

1 files changed, 42 insertions, 0 deletions

diff --git a/ale_linters/ruby/debride.vim b/ale_linters/ruby/debride.vim
new file mode 100644
index 00000000..0a45644e
--- /dev/null
+++ b/ale_linters/ruby/debride.vim
@@ -0,0 +1,42 @@
+" Author: Eddie Lebow https://github.com/elebow
+" Description: debride, a dead method detector for Ruby files
+
+call ale#Set('ruby_debride_executable', 'debride')
+call ale#Set('ruby_debride_options', '')
+
+function! ale_linters#ruby#debride#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'ruby_debride_executable')
+
+    return ale#handlers#ruby#EscapeExecutable(l:executable, 'debride')
+    \   . ale#Var(a:buffer, 'ruby_debride_options')
+    \   . ' %s'
+endfunction
+
+function! ale_linters#ruby#debride#HandleOutput(buffer, lines) abort
+    let l:output = []
+
+    for l:line in a:lines
+        if l:line !~# '^  '
+            continue
+        endif
+
+        let l:elements = split(l:line)
+        let l:method_name = l:elements[0]
+        let l:lnum = split(l:elements[1], ':')[1]
+
+        call add(l:output, {
+        \   'lnum': 0 + l:lnum,
+        \   'text': 'Possible unused method: ' . l:method_name,
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('ruby', {
+\   'name': 'debride',
+\   'executable': {b -> ale#Var(b, 'ruby_debride_executable')},
+\   'command': function('ale_linters#ruby#debride#GetCommand'),
+\   'callback': 'ale_linters#ruby#debride#HandleOutput',
+\})