--- /dev/null
+" Description: opa check for rego files
+
+call ale#Set('rego_opacheck_executable', 'opa')
+call ale#Set('rego_opacheck_options', '')
+
+function! ale_linters#rego#opacheck#GetExecutable(buffer) abort
+ return ale#Var(a:buffer, 'rego_opacheck_executable')
+endfunction
+
+function! ale_linters#rego#opacheck#GetCommand(buffer) abort
+ let l:options = ale#Var(a:buffer, 'rego_opacheck_options')
+
+ return ale#Escape(ale_linters#rego#opacheck#GetExecutable(a:buffer))
+ \ . ' check %s:h --format json '
+ \ . (!empty(l:options) ? ' ' . l:options : '')
+endfunction
+
+function! ale_linters#rego#opacheck#Handle(buffer, lines) abort
+ let l:output = []
+
+ let l:errors = ale#util#FuzzyJSONDecode(a:lines, {'errors': []})
+ let l:dir = expand('#' . a:buffer . ':p:h')
+ let l:file = expand('#' . a:buffer . ':p')
+
+ for l:error in l:errors['errors']
+ if has_key(l:error, 'location')
+ call add(l:output, {
+ \ 'filename': ale#path#GetAbsPath(l:dir, l:error['location']['file']),
+ \ 'lnum': l:error['location']['row'],
+ \ 'col': l:error['location']['col'],
+ \ 'text': l:error['message'],
+ \ 'code': l:error['code'],
+ \ 'type': 'E',
+ \})
+ else
+ call add(l:output, {
+ \ 'filename': l:file,
+ \ 'lnum': 0,
+ \ 'col': 0,
+ \ 'text': l:error['message'],
+ \ 'code': l:error['code'],
+ \ 'type': 'E',
+ \})
+ endif
+ endfor
+
+ return l:output
+endfunction
+
+call ale#linter#Define('rego', {
+\ 'name': 'opacheck',
+\ 'output_stream': 'both',
+\ 'executable': function('ale_linters#rego#opacheck#GetExecutable'),
+\ 'command': function('ale_linters#rego#opacheck#GetCommand'),
+\ 'callback': 'ale_linters#rego#opacheck#Handle',
+\})