File: labels.vim

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" VimTeX - LaTeX plugin for Vim
"
" Maintainer: Karl Yngve LervÄg
" Email:      karl.yngve@gmail.com
"

function! vimtex#parser#toc#labels#new() abort " {{{1
  return s:matcher
endfunction

" }}}1

let s:matcher = {
      \ 'label_dict': {},
      \ 'prefilter_cmds': ['label'],
      \ 'priority': 1,
      \ 're': g:vimtex#re#not_comment .. '\\label\{\zs.{-}\ze\}',
      \ 'format': '%s%s',
      \}
function! s:matcher.init() abort dict " {{{1
  let l:labels = vimtex#parser#auxiliary#labels()

  let self.label_dict = {}
  for l:x in l:labels
    let self.label_dict[l:x.word] = ' (' .. l:x.menu .. ')'
  endfor

  let l:wininfo = getwininfo(win_getid())[0]
  let l:width = l:wininfo.width - l:wininfo.textoff - 2
  if stridx(g:vimtex_toc_config.split_pos, 'vert') >= 0
    let l:width = g:vimtex_toc_config.split_width
  endif
  let l:width -= 10
  let l:w1 = l:width/2
  let l:w2 = l:width - l:w1
  let self.format = '%-' .. l:w1 .. 's%' .. l:w2 .. 's'
endfunction

" }}}1
function! s:matcher.get_entry(context) abort dict " {{{1
  let l:key = matchstr(a:context.line, self.re)
  let l:label = get(self.label_dict, l:key, '')

  return {
        \ 'title':  printf(self.format, l:key, l:label),
        \ 'number': '',
        \ 'file':   a:context.file,
        \ 'line':   a:context.lnum,
        \ 'level':  a:context.max_level - a:context.level.current,
        \ 'rank':   a:context.lnum_total,
        \ 'type':   'label',
        \ }
endfunction
" }}}1