" Author: Eddie Lebow https://github.com/elebow
" Description: eruby checker using `erubi`
function! ale_linters#eruby#erubi#GetCommand(buffer, output, meta) abort
let l:rails_root = ale#ruby#FindRailsRoot(a:buffer)
if !empty(a:output)
" The empty command in CheckErubi returns nothing if erubi runs and
" emits an error if erubi is not present
return ''
endif
if empty(l:rails_root)
return 'ruby -r erubi/capture_end -e ' . ale#Escape('puts Erubi::CaptureEndEngine.new($stdin.read).src') . '< %t | ruby -c'
" Rails-flavored eRuby does not comply with the standard as understood by
" Erubi, so we'll have to do some substitution. This does not reduce the
" effectiveness of the linter---the translated code is still evaluated.
return 'ruby -r erubi/capture_end -e ' . ale#Escape('puts Erubi::CaptureEndEngine.new($stdin.read.gsub(%{<%=},%{<%}), nil, %{-}).src') . '< %t | ruby -c'
endfunction
call ale#linter#Define('eruby', {
\ 'name': 'erubi',
\ 'executable': 'ruby',
\ 'command': {buffer -> ale#command#Run(
\ buffer,
\ 'ruby -r erubi/capture_end -e ' . ale#Escape('""'),
\ function('ale_linters#eruby#erubi#GetCommand'),
\ )},
\ 'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
\})