389 lines
12 KiB
VimL
389 lines
12 KiB
VimL
scriptencoding utf8
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" Author: w0rp <devw0rp@gmail.com>
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" Description: Draws error and warning signs into signcolumn
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" This flag can be set to some integer to control the maximum number of signs
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" that ALE will set.
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let g:ale_max_signs = get(g:, 'ale_max_signs', -1)
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" This flag can be set to 1 to enable changing the sign column colors when
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" there are errors.
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let g:ale_change_sign_column_color = get(g:, 'ale_change_sign_column_color', 0)
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" These variables dictate what signs are used to indicate errors and warnings.
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let g:ale_sign_error = get(g:, 'ale_sign_error', '>>')
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let g:ale_sign_style_error = get(g:, 'ale_sign_style_error', g:ale_sign_error)
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let g:ale_sign_warning = get(g:, 'ale_sign_warning', '--')
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let g:ale_sign_style_warning = get(g:, 'ale_sign_style_warning', g:ale_sign_warning)
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let g:ale_sign_info = get(g:, 'ale_sign_info', g:ale_sign_warning)
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" This variable sets an offset which can be set for sign IDs.
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" This ID can be changed depending on what IDs are set for other plugins.
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" The dummy sign will use the ID exactly equal to the offset.
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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
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let g:ale_sign_column_always = get(g:, 'ale_sign_column_always', 0)
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if !hlexists('ALEErrorSign')
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highlight link ALEErrorSign error
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endif
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if !hlexists('ALEStyleErrorSign')
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highlight link ALEStyleErrorSign ALEErrorSign
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endif
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if !hlexists('ALEWarningSign')
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highlight link ALEWarningSign todo
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endif
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if !hlexists('ALEStyleWarningSign')
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highlight link ALEStyleWarningSign ALEWarningSign
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endif
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if !hlexists('ALEInfoSign')
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highlight link ALEInfoSign ALEWarningSign
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endif
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if !hlexists('ALESignColumnWithErrors')
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highlight link ALESignColumnWithErrors error
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endif
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function! ale#sign#SetUpDefaultColumnWithoutErrorsHighlight() abort
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redir => l:output
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0verbose silent highlight SignColumn
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redir end
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let l:highlight_syntax = join(split(l:output)[2:])
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let l:match = matchlist(l:highlight_syntax, '\vlinks to (.+)$')
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if !empty(l:match)
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execute 'highlight link ALESignColumnWithoutErrors ' . l:match[1]
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elseif l:highlight_syntax isnot# 'cleared'
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execute 'highlight ALESignColumnWithoutErrors ' . l:highlight_syntax
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endif
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endfunction
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if !hlexists('ALESignColumnWithoutErrors')
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call ale#sign#SetUpDefaultColumnWithoutErrorsHighlight()
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endif
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" Spaces and backslashes need to be escaped for signs.
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function! s:EscapeSignText(sign_text) abort
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return substitute(a:sign_text, '\\\| ', '\\\0', 'g')
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endfunction
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" Signs show up on the left for error markers.
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execute 'sign define ALEErrorSign text=' . s:EscapeSignText(g:ale_sign_error)
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\ . ' texthl=ALEErrorSign linehl=ALEErrorLine'
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execute 'sign define ALEStyleErrorSign text=' . s:EscapeSignText(g:ale_sign_style_error)
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\ . ' texthl=ALEStyleErrorSign linehl=ALEErrorLine'
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execute 'sign define ALEWarningSign text=' . s:EscapeSignText(g:ale_sign_warning)
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\ . ' texthl=ALEWarningSign linehl=ALEWarningLine'
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execute 'sign define ALEStyleWarningSign text=' . s:EscapeSignText(g:ale_sign_style_warning)
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\ . ' texthl=ALEStyleWarningSign linehl=ALEWarningLine'
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execute 'sign define ALEInfoSign text=' . s:EscapeSignText(g:ale_sign_info)
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\ . ' texthl=ALEInfoSign linehl=ALEInfoLine'
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sign define ALEDummySign
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function! ale#sign#GetSignName(sublist) abort
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let l:priority = g:ale#util#style_warning_priority
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" Determine the highest priority item for the line.
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for l:item in a:sublist
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let l:item_priority = ale#util#GetItemPriority(l:item)
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if l:item_priority > l:priority
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let l:priority = l:item_priority
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endif
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endfor
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if l:priority is# g:ale#util#error_priority
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return 'ALEErrorSign'
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endif
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if l:priority is# g:ale#util#warning_priority
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return 'ALEWarningSign'
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endif
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if l:priority is# g:ale#util#style_error_priority
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return 'ALEStyleErrorSign'
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endif
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if l:priority is# g:ale#util#style_warning_priority
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return 'ALEStyleWarningSign'
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endif
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if l:priority is# g:ale#util#info_priority
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return 'ALEInfoSign'
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endif
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" Use the error sign for invalid severities.
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return 'ALEErrorSign'
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endfunction
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" Read sign data for a buffer to a list of lines.
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function! ale#sign#ReadSigns(buffer) abort
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redir => l:output
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silent execute 'sign place buffer=' . a:buffer
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redir end
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return split(l:output, "\n")
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endfunction
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" Given a list of lines for sign output, return a List of [line, id, group]
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function! ale#sign#ParseSigns(line_list) abort
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" Matches output like :
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" line=4 id=1 name=ALEErrorSign
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" строка=1 id=1000001 имя=ALEErrorSign
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" 行=1 識別子=1000001 名前=ALEWarningSign
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" línea=12 id=1000001 nombre=ALEWarningSign
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" riga=1 id=1000001, nome=ALEWarningSign
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let l:pattern = '\v^.*\=(\d+).*\=(\d+).*\=(ALE[a-zA-Z]+Sign)'
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let l:result = []
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let l:is_dummy_sign_set = 0
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for l:line in a:line_list
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let l:match = matchlist(l:line, l:pattern)
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if len(l:match) > 0
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if l:match[3] is# 'ALEDummySign'
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let l:is_dummy_sign_set = 1
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else
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call add(l:result, [
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\ str2nr(l:match[1]),
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\ str2nr(l:match[2]),
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\ l:match[3],
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\])
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endif
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endif
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endfor
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return [l:is_dummy_sign_set, l:result]
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endfunction
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function! ale#sign#FindCurrentSigns(buffer) abort
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let l:line_list = ale#sign#ReadSigns(a:buffer)
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return ale#sign#ParseSigns(l:line_list)
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endfunction
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" Given a loclist, group the List into with one List per line.
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function! s:GroupLoclistItems(buffer, loclist) abort
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let l:grouped_items = []
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let l:last_lnum = -1
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for l:obj in a:loclist
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if l:obj.bufnr != a:buffer
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continue
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endif
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" Create a new sub-List when we hit a new line.
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if l:obj.lnum != l:last_lnum
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call add(l:grouped_items, [])
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endif
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call add(l:grouped_items[-1], l:obj)
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let l:last_lnum = l:obj.lnum
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endfor
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return l:grouped_items
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endfunction
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function! s:UpdateLineNumbers(buffer, current_sign_list, loclist) abort
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let l:line_map = {}
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let l:line_numbers_changed = 0
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for [l:line, l:sign_id, l:name] in a:current_sign_list
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let l:line_map[l:sign_id] = l:line
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endfor
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for l:item in a:loclist
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if l:item.bufnr == a:buffer
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let l:lnum = get(l:line_map, get(l:item, 'sign_id', 0), 0)
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if l:lnum && l:item.lnum != l:lnum
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let l:item.lnum = l:lnum
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let l:line_numbers_changed = 1
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endif
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endif
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endfor
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" When the line numbers change, sort the list again
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if l:line_numbers_changed
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call sort(a:loclist, 'ale#util#LocItemCompare')
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endif
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endfunction
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function! s:BuildSignMap(buffer, current_sign_list, grouped_items) abort
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let l:max_signs = ale#Var(a:buffer, 'max_signs')
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if l:max_signs is 0
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let l:selected_grouped_items = []
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elseif type(l:max_signs) is v:t_number && l:max_signs > 0
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let l:selected_grouped_items = a:grouped_items[:l:max_signs - 1]
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else
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let l:selected_grouped_items = a:grouped_items
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endif
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let l:sign_map = {}
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let l:sign_offset = g:ale_sign_offset
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for [l:line, l:sign_id, l:name] in a:current_sign_list
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let l:sign_info = get(l:sign_map, l:line, {
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\ 'current_id_list': [],
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\ 'current_name_list': [],
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\ 'new_id': 0,
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\ 'new_name': '',
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\ 'items': [],
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\})
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" Increment the sign offset for new signs, by the maximum sign ID.
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if l:sign_id > l:sign_offset
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let l:sign_offset = l:sign_id
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endif
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" Remember the sign names and IDs in separate Lists, so they are easy
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" to work with.
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call add(l:sign_info.current_id_list, l:sign_id)
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call add(l:sign_info.current_name_list, l:name)
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let l:sign_map[l:line] = l:sign_info
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endfor
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for l:group in l:selected_grouped_items
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let l:line = l:group[0].lnum
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let l:sign_info = get(l:sign_map, l:line, {
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\ 'current_id_list': [],
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\ 'current_name_list': [],
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\ 'new_id': 0,
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\ 'new_name': '',
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\ 'items': [],
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\})
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let l:sign_info.new_name = ale#sign#GetSignName(l:group)
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let l:sign_info.items = l:group
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let l:index = index(
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\ l:sign_info.current_name_list,
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\ l:sign_info.new_name
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\)
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if l:index >= 0
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" We have a sign with this name already, so use the same ID.
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let l:sign_info.new_id = l:sign_info.current_id_list[l:index]
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else
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" This sign name replaces the previous name, so use a new ID.
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let l:sign_info.new_id = l:sign_offset + 1
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let l:sign_offset += 1
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endif
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let l:sign_map[l:line] = l:sign_info
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endfor
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return l:sign_map
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endfunction
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function! ale#sign#GetSignCommands(buffer, was_sign_set, sign_map) abort
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let l:command_list = []
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let l:is_dummy_sign_set = a:was_sign_set
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" Set the dummy sign if we need to.
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" The dummy sign is needed to keep the sign column open while we add
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" and remove signs.
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if !l:is_dummy_sign_set && (!empty(a:sign_map) || g:ale_sign_column_always)
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call add(l:command_list, 'sign place '
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\ . g:ale_sign_offset
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\ . ' line=1 name=ALEDummySign buffer='
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\ . a:buffer
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\)
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let l:is_dummy_sign_set = 1
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endif
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" Place new items first.
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for [l:line_str, l:info] in items(a:sign_map)
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if l:info.new_id
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" Save the sign IDs we are setting back on our loclist objects.
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" These IDs will be used to preserve items which are set many times.
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for l:item in l:info.items
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let l:item.sign_id = l:info.new_id
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endfor
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if index(l:info.current_id_list, l:info.new_id) < 0
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call add(l:command_list, 'sign place '
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\ . (l:info.new_id)
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\ . ' line=' . l:line_str
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\ . ' name=' . (l:info.new_name)
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\ . ' buffer=' . a:buffer
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\)
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endif
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endif
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endfor
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" Remove signs without new IDs.
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for l:info in values(a:sign_map)
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for l:current_id in l:info.current_id_list
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if l:current_id isnot l:info.new_id
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call add(l:command_list, 'sign unplace '
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\ . l:current_id
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\ . ' buffer=' . a:buffer
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\)
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endif
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endfor
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endfor
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" Remove the dummy sign to close the sign column if we need to.
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if l:is_dummy_sign_set && !g:ale_sign_column_always
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call add(l:command_list, 'sign unplace '
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\ . g:ale_sign_offset
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\ . ' buffer=' . a:buffer
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\)
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endif
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return l:command_list
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endfunction
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" This function will set the signs which show up on the left.
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function! ale#sign#SetSigns(buffer, loclist) abort
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if !bufexists(str2nr(a:buffer))
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" Stop immediately when attempting to set signs for a buffer which
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" does not exist.
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return
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endif
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" Find the current markers
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let [l:is_dummy_sign_set, l:current_sign_list] =
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\ ale#sign#FindCurrentSigns(a:buffer)
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" Update the line numbers for items from before which may have moved.
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call s:UpdateLineNumbers(a:buffer, l:current_sign_list, a:loclist)
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" Group items after updating the line numbers.
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let l:grouped_items = s:GroupLoclistItems(a:buffer, a:loclist)
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" Build a map of current and new signs, with the lines as the keys.
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let l:sign_map = s:BuildSignMap(
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\ a:buffer,
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\ l:current_sign_list,
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\ l:grouped_items,
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\)
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let l:command_list = ale#sign#GetSignCommands(
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\ a:buffer,
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\ l:is_dummy_sign_set,
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\ l:sign_map,
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\)
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" Change the sign column color if the option is on.
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if g:ale_change_sign_column_color && !empty(a:loclist)
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highlight clear SignColumn
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highlight link SignColumn ALESignColumnWithErrors
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endif
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for l:command in l:command_list
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silent! execute l:command
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endfor
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" Reset the sign column color when there are no more errors.
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if g:ale_change_sign_column_color && empty(a:loclist)
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highlight clear SignColumn
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highlight link SignColumn ALESignColumnWithoutErrors
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endif
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endfunction
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