| Gregory Anders | 1cc4cae | 2024-07-15 20:00:48 +0200 | [diff] [blame] | 1 | " Language: Typst |
| 2 | " Maintainer: Gregory Anders |
| 3 | " Last Change: 2024-07-14 |
| 4 | " Based on: https://github.com/kaarmu/typst.vim |
| 5 | |
| 6 | function! typst#indentexpr() abort |
| 7 | let l:lnum = v:lnum |
| 8 | let s:sw = shiftwidth() |
| 9 | |
| 10 | let [l:plnum, l:pline] = s:get_prev_nonblank(l:lnum - 1) |
| 11 | if l:plnum == 0 | return 0 | endif |
| 12 | |
| 13 | let l:line = getline(l:lnum) |
| 14 | let l:ind = indent(l:plnum) |
| 15 | |
| 16 | let l:synname = synIDattr(synID(l:lnum, 1, 1), 'name') |
| 17 | |
| 18 | " Use last indent for block comments |
| 19 | if l:synname == 'typstCommentBlock' |
| 20 | return l:ind |
| 21 | endif |
| 22 | |
| 23 | if l:pline =~ '\v[{[(]\s*$' |
| 24 | let l:ind += s:sw |
| 25 | endif |
| 26 | |
| 27 | if l:line =~ '\v^\s*[}\])]' |
| 28 | let l:ind -= s:sw |
| 29 | endif |
| 30 | |
| 31 | return l:ind |
| 32 | endfunction |
| 33 | |
| 34 | " Gets the previous non-blank line that is not a comment. |
| 35 | function! s:get_prev_nonblank(lnum) abort |
| 36 | let l:lnum = prevnonblank(a:lnum) |
| 37 | let l:line = getline(l:lnum) |
| 38 | |
| 39 | while l:lnum > 0 && l:line =~ '^\s*//' |
| 40 | let l:lnum = prevnonblank(l:lnum - 1) |
| 41 | let l:line = getline(l:lnum) |
| 42 | endwhile |
| 43 | |
| 44 | return [l:lnum, s:remove_comments(l:line)] |
| 45 | endfunction |
| 46 | |
| 47 | " Removes comments from the given line. |
| 48 | function! s:remove_comments(line) abort |
| 49 | return substitute(a:line, '\s*//.*', '', '') |
| 50 | endfunction |