ale/ale_linters/python/flake8.vim
Bjorn Neergaard 7f0ce89d2b First pass at optimizing ale to autoload (#80)
* First pass at optimizing ale to autoload

First off, the structure/function names should be revised a bit,
but I will wait for @w0rp's input before unifying the naming style.
Second off, the docs probably need some more work, I just did some
simple find-and-replace work.

With that said, this pull brings major performance gains for ale. On my
slowest system, fully loading ale and all its code takes around 150ms.

I have moved all of ale's autoload-able code to autoload/, and in
addition, implemented lazy-loading of linters. This brings load time on
that same system down to 5ms.

The only downside of lazy loading is that `g:ale_linters` cannot be
changed at runtime; however, it also speeds up performance at runtime by
simplfying the logic greatly.

Please let me know what you think!

Closes #59

* Address Travis/Vint errors

For some reason, ale isn't running vint for me...

* Incorporate feedback, make fixes

Lazy-loading logic is much improved.

* Add header comments; remove incorrect workaround

* Remove unneeded plugin guards

* Fix lazy-loading linter logic

Set the wrong variable....

* Fix capitialization
2016-10-10 19:51:29 +01:00

56 lines
1.4 KiB
VimL

" Author: w0rp <devw0rp@gmail.com>
" Description: flake8 for python files
if exists('g:loaded_ale_linters_python_flake8')
finish
endif
let g:loaded_ale_linters_python_flake8 = 1
function! ale_linters#python#flake8#Handle(buffer, lines)
" Matches patterns line the following:
"
" stdin:6:6: E111 indentation is not a multiple of four
let pattern = '^stdin:\(\d\+\):\(\d\+\): \([^ ]\+\) \(.\+\)$'
let output = []
for line in a:lines
let l:match = matchlist(line, pattern)
if len(l:match) == 0
continue
endif
let line = l:match[1] + 0
let column = l:match[2] + 0
let code = l:match[3]
let text = code . ': ' . l:match[4]
let type = code[0] ==# 'E' ? 'E' : 'W'
if code ==# 'W291' && !g:ale_warn_about_trailing_whitespace
" Skip warnings for trailing whitespace if the option is off.
continue
endif
" vcol is Needed to indicate that the column is a character.
call add(output, {
\ 'bufnr': a:buffer,
\ 'lnum': line,
\ 'vcol': 0,
\ 'col': column,
\ 'text': text,
\ 'type': type,
\ 'nr': -1,
\})
endfor
return output
endfunction
call ale#linter#Define('python', {
\ 'name': 'flake8',
\ 'executable': 'flake8',
\ 'command': 'flake8 -',
\ 'callback': 'ale_linters#python#flake8#Handle',
\})