ale/plugin/ale.vim

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" Author: w0rp <devw0rp@gmail.com>
" Description: Main entry point for the plugin: sets up prefs and autocommands
" Preferences can be set in vimrc files and so on to configure ale
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" Sanity Checks
if exists('g:loaded_ale')
finish
endif
let g:loaded_ale = 1
" A flag for detecting if the required features are set.
if has('nvim')
let s:has_features = has('timers')
else
" Check if Job and Channel functions are available, instead of the
" features. This works better on old MacVim versions.
let s:has_features = has('timers') && exists('*job_start') && exists('*ch_close_in')
endif
if !s:has_features
echoerr 'ALE requires NeoVim >= 0.1.5 or Vim 8 with +timers +job +channel'
echoerr 'Please update your editor appropriately.'
finish
endif
" Set the TMPDIR environment variable if it is not set automatically.
" This can automatically fix some environments.
if has('unix') && empty($TMPDIR)
let $TMPDIR = '/tmp'
endif
" This global variable is used internally by ALE for tracking information for
" each buffer which linters are being run against.
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let g:ale_buffer_info = {}
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" User Configuration
" This option prevents ALE autocmd commands from being run for particular
" filetypes which can cause issues.
let g:ale_filetype_blacklist = ['nerdtree', 'unite']
" This Dictionary configures which linters are enabled for which languages.
let g:ale_linters = get(g:, 'ale_linters', {})
" This Dictionary allows users to set up filetype aliases for new filetypes.
let g:ale_linter_aliases = get(g:, 'ale_linter_aliases', {})
" This flag can be set with a number of milliseconds for delaying the
" execution of a linter when text is changed. The timeout will be set and
" cleared each time text is changed, so repeated edits won't trigger the
" jobs for linting until enough time has passed after editing is done.
let g:ale_lint_delay = get(g:, 'ale_lint_delay', 200)
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" This flag can be set to 0 to disable linting when text is changed.
let g:ale_lint_on_text_changed = get(g:, 'ale_lint_on_text_changed', 1)
" This flag can be set to 0 to disable linting when the buffer is entered.
let g:ale_lint_on_enter = get(g:, 'ale_lint_on_enter', 1)
" This flag can be set to 1 to enable linting when a buffer is written.
let g:ale_lint_on_save = get(g:, 'ale_lint_on_save', 0)
" This flag may be set to 0 to disable ale. After ale is loaded, :ALEToggle
" should be used instead.
let g:ale_enabled = get(g:, 'ale_enabled', 1)
" These flags dictates if ale uses the quickfix or the loclist (loclist is the
" default, quickfix overrides loclist).
let g:ale_set_loclist = get(g:, 'ale_set_loclist', 1)
let g:ale_set_quickfix = get(g:, 'ale_set_quickfix', 0)
" This flag dictates if ale open the configured loclist
let g:ale_open_list = get(g:, 'ale_open_list', 0)
" This flag dictates if ale keeps open loclist even if there is no error in loclist
let g:ale_keep_list_window_open = get(g:, 'ale_keep_list_window_open', 0)
" This flag can be set to 0 to disable setting signs.
" This is enabled by default only if the 'signs' feature exists.
let g:ale_set_signs = get(g:, 'ale_set_signs', has('signs'))
" This flag can be set to 0 to disable setting error highlights.
let g:ale_set_highlights = get(g:, 'ale_set_highlights', has('syntax'))
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" These variables dicatate what sign is used to indicate errors and warnings.
let g:ale_sign_error = get(g:, 'ale_sign_error', '>>')
let g:ale_sign_warning = get(g:, 'ale_sign_warning', '--')
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" This variable sets an offset which can be set for sign IDs.
" This ID can be changed depending on what IDs are set for other plugins.
" The dummy sign will use the ID exactly equal to the offset.
let g:ale_sign_offset = get(g:, 'ale_sign_offset', 1000000)
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" This flag can be set to 1 to keep sign gutter always open
let g:ale_sign_column_always = get(g:, 'ale_sign_column_always', 0)
" String format for the echoed message
" A %s is mandatory
" It can contain 2 handlers: %linter%, %severity%
let g:ale_echo_msg_format = get(g:, 'ale_echo_msg_format', '%s')
" Strings used for severity in the echoed message
let g:ale_echo_msg_error_str = get(g:, 'ale_echo_msg_error_str', 'Error')
let g:ale_echo_msg_warning_str = get(g:, 'ale_echo_msg_warning_str', 'Warning')
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" This flag can be set to 0 to disable echoing when the cursor moves.
let g:ale_echo_cursor = get(g:, 'ale_echo_cursor', 1)
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" String format for statusline
" Its a list where:
" * The 1st element is for errors
" * The 2nd element is for warnings
" * The 3rd element is when there are no errors
let g:ale_statusline_format = get(g:, 'ale_statusline_format',
\ ['%d error(s)', '%d warning(s)', 'OK']
\)
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" This flag can be set to 0 to disable warnings for trailing whitespace
let g:ale_warn_about_trailing_whitespace =
\ get(g:, 'ale_warn_about_trailing_whitespace', 1)
function! s:ALEInitAuGroups() abort
augroup ALERunOnTextChangedGroup
autocmd!
if g:ale_enabled && g:ale_lint_on_text_changed
autocmd TextChanged,TextChangedI * call ale#Queue(g:ale_lint_delay)
endif
augroup END
augroup ALERunOnEnterGroup
autocmd!
if g:ale_enabled && g:ale_lint_on_enter
autocmd BufEnter,BufRead * call ale#Queue(300)
endif
augroup END
augroup ALERunOnSaveGroup
autocmd!
if g:ale_enabled && g:ale_lint_on_save
autocmd BufWrite * call ale#Queue(0)
endif
augroup END
augroup ALECursorGroup
autocmd!
if g:ale_enabled && g:ale_echo_cursor
autocmd CursorMoved,CursorHold * call ale#cursor#EchoCursorWarningWithDelay()
endif
augroup END
endfunction
function! s:ALEToggle() abort
let g:ale_enabled = !get(g:, 'ale_enabled')
if g:ale_enabled
" Lint immediately
call ale#Queue(0)
else
for l:buffer in keys(g:ale_buffer_info)
" Stop jobs and delete stored buffer data
call ale#cleanup#Buffer(l:buffer)
" Clear signs, loclist, quicklist
call ale#engine#SetResults(l:buffer, [])
endfor
" Remove highlights for the current buffer now.
if g:ale_set_higlights
call ale#highlight#UpdateHighlights()
endif
endif
call s:ALEInitAuGroups()
endfunction
call s:ALEInitAuGroups()
" Define commands for moving through warnings and errors.
command! ALEPrevious :call ale#loclist_jumping#Jump('before', 0)
command! ALEPreviousWrap :call ale#loclist_jumping#Jump('before', 1)
command! ALENext :call ale#loclist_jumping#Jump('after', 0)
command! ALENextWrap :call ale#loclist_jumping#Jump('after', 1)
command! ALEToggle :call s:ALEToggle()
" Define command to get information about current filetype.
command! ALEInfo :call ale#debugging#Info()
" <Plug> mappings for commands
nnoremap <silent> <Plug>(ale_previous) :ALEPrevious<Return>
nnoremap <silent> <Plug>(ale_previous_wrap) :ALEPreviousWrap<Return>
nnoremap <silent> <Plug>(ale_next) :ALENext<Return>
nnoremap <silent> <Plug>(ale_next_wrap) :ALENextWrap<Return>
nnoremap <silent> <Plug>(ale_toggle) :ALEToggle<Return>
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" Housekeeping
augroup ALECleanupGroup
autocmd!
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" Clean up buffers automatically when they are unloaded.
autocmd BufUnload * call ale#cleanup#Buffer(expand('<abuf>'))
augroup END
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" Backwards Compatibility
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function! ALELint(delay) abort
call ale#Queue(a:delay)
endfunction
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function! ALEGetStatusLine() abort
return ale#statusline#Status()
endfunction