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" Author: Kevin Kays - https://github.com/okkays
" Description: Support for the scalastyle checker.
call ale#Set('scala_scalastyle_options', '')
" TODO: Remove support for the old option name in ALE 3.0.
call ale#Set('scala_scalastyle_config',
\ get(g:, 'ale_scalastyle_config_loc', '')
\)
function! ale_linters#scala#scalastyle#Handle(buffer, lines) abort
" Look for help output from scalastyle first, which indicates that no
" configuration file was found.
for l:line in a:lines[:10]
if l:line =~# '-c, --config'
return [{
\ 'lnum': 1,
\ 'text': '(See :help ale-scala-scalastyle)'
\ . ' No scalastyle configuration file was found.',
\}]
endif
endfor
" Matches patterns like the following:
"
" warning file=/home/blurble/Doop.scala message=Missing or badly formed ScalaDoc: Extra @param foobles line=190
let l:patterns = [
\ '^\(.\+\) .\+ message=\(.\+\) line=\(\d\+\)$',
\ '^\(.\+\) .\+ message=\(.\+\) line=\(\d\+\) column=\(\d\+\)$',
\]
let l:output = []
for l:match in ale#util#GetMatches(a:lines, l:patterns)
let l:args = {
\ 'lnum': l:match[3] + 0,
\ 'type': l:match[1] =~? 'error' ? 'E' : 'W',
\ 'text': l:match[2]
\}
if !empty(l:match[4])
let l:args['col'] = l:match[4] + 1
endif
call add(l:output, l:args)
endfor
return l:output
endfunction
function! ale_linters#scala#scalastyle#GetCommand(buffer) abort
" Search for scalastyle config in parent directories.
let l:scalastyle_config = ''
let l:potential_configs = [
\ 'scalastyle_config.xml',
\ 'scalastyle-config.xml'
\]
for l:config in l:potential_configs
let l:scalastyle_config = ale#path#ResolveLocalPath(
\ a:buffer,
\ l:config,
\ ''
\)
if !empty(l:scalastyle_config)
break
endif
endfor
" If all else fails, try the global config.
if empty(l:scalastyle_config)
let l:scalastyle_config = ale#Var(a:buffer, 'scala_scalastyle_config')
endif
return 'scalastyle'
\ . (!empty(l:scalastyle_config) ? ' --config ' . ale#Escape(l:scalastyle_config) : '')
\ . ale#Pad(ale#Var(a:buffer, 'scala_scalastyle_options'))
\ . ' %t'
endfunction
call ale#linter#Define('scala', {
\ 'name': 'scalastyle',
\ 'executable': 'scalastyle',
\ 'output_stream': 'stdout',
\ 'command': function('ale_linters#scala#scalastyle#GetCommand'),
\ 'callback': 'ale_linters#scala#scalastyle#Handle',
\})
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