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Implement highlights using neovim API

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This commit is contained in:
Francisco Giordano 2019-07-09 21:35:56 -03:00
parent 6c47d7fc35
commit 79dde5f0e5
1 changed files with 51 additions and 7 deletions
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58
autoload/ale/highlight.vim
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@ -26,6 +26,12 @@ endif
let s:MAX_POS_VALUES = 8
let s:MAX_COL_SIZE = 1073741824 " pow(2, 30)
let s:has_nvim_highlight = exists('*nvim_buf_add_highlight') && exists('*nvim_buf_clear_namespace')
if s:has_nvim_highlight
let s:ns_id = nvim_create_namespace('ale_highlight')
endif
function! ale#highlight#CreatePositions(line, col, end_line, end_col) abort
if a:line >= a:end_line
" For single lines, just return the one position.
@ -51,15 +57,53 @@ endfunction
" except these which have matching loclist item entries.
function! ale#highlight#RemoveHighlights() abort
for l:match in getmatches()
if l:match.group =~? '\v^ALE(Style)?(Error|Warning|Info)(Line)?$'
call matchdelete(l:match.id)
endif
endfor
if s:has_nvim_highlight
call nvim_buf_clear_namespace(bufnr(''), s:ns_id, 0, -1)
else
for l:match in getmatches()
if l:match.group =~? '\v^ALE(Style)?(Error|Warning|Info)(Line)?$'
call matchdelete(l:match.id)
endif
endfor
endif
endfunction
" Same semantics of matchaddpos but will use nvim_buf_add_highlight if
" available. This involves iterating over the position list, switching from
" 1-based indexing to 0-based indexing, and translating the multiple ways
" that position can be specified for matchaddpos into line + col_start +
" col_end.
function! s:matchaddpos(group, pos_list) abort
if s:has_nvim_highlight
for l:pos in a:pos_list
let l:line = type(l:pos) == v:t_number
\ ? l:pos - 1
\ : l:pos[0] - 1
if type(l:pos) == v:t_number || len(l:pos) == 1
let l:col_start = 0
let l:col_end = -1
else
let l:col_start = l:pos[1] - 1
let l:col_end = l:col_start + get(l:pos, 2, 1)
endif
call nvim_buf_add_highlight(
\ bufnr(''),
\ s:ns_id,
\ a:group,
\ l:line,
\ l:col_start,
\ l:col_end,
\)
endfor
else
call matchaddpos(a:group, a:pos_list)
endif
endfunction
function! s:highlight_line(bufnr, lnum, group) abort
call matchaddpos(a:group, [a:lnum])
call s:matchaddpos(a:group, [a:lnum])
endfunction
function! s:highlight_range(bufnr, range, group) abort
@ -72,7 +116,7 @@ function! s:highlight_range(bufnr, range, group) abort
\ a:range.end_lnum,
\ a:range.end_col
\ ),
\ 'matchaddpos(a:group, v:val)'
\ 's:matchaddpos(a:group, v:val)'
\)
endfunction