xref: /vim-8.2.3635/runtime/indent/teraterm.vim (revision 2bf24176)
1" Vim indent file
2" Language:	Tera Term Language (TTL)
3"		Based on Tera Term Version 4.86
4" Maintainer:	Ken Takata
5" URL:		https://github.com/k-takata/vim-teraterm
6" Last Change:	2015 Jun 4
7" Filenames:	*.ttl
8" License:	VIM License
9
10if exists("b:did_indent")
11  finish
12endif
13let b:did_indent = 1
14
15setlocal nosmartindent
16setlocal noautoindent
17setlocal indentexpr=GetTeraTermIndent(v:lnum)
18setlocal indentkeys=!^F,o,O,e
19setlocal indentkeys+==elseif,=endif,=loop,=next,=enduntil,=endwhile
20
21if exists("*GetTeraTermIndent")
22  finish
23endif
24
25" The shiftwidth() function is relatively new.
26" Don't require it to exist.
27if exists('*shiftwidth')
28  function s:sw() abort
29    return shiftwidth()
30  endfunction
31else
32  function s:sw() abort
33    return &shiftwidth
34  endfunction
35endif
36
37function! GetTeraTermIndent(lnum)
38  let l:prevlnum = prevnonblank(a:lnum-1)
39  if l:prevlnum == 0
40    " top of file
41    return 0
42  endif
43
44  " grab the previous and current line, stripping comments.
45  let l:prevl = substitute(getline(l:prevlnum), ';.*$', '', '')
46  let l:thisl = substitute(getline(a:lnum), ';.*$', '', '')
47  let l:previ = indent(l:prevlnum)
48
49  let l:ind = l:previ
50
51  if l:prevl =~ '^\s*if\>.*\<then\s*$'
52    " previous line opened a block
53    let l:ind += s:sw()
54  endif
55  if l:prevl =~ '^\s*\%(elseif\|else\|do\|until\|while\|for\)\>'
56    " previous line opened a block
57    let l:ind += s:sw()
58  endif
59  if l:thisl =~ '^\s*\%(elseif\|else\|endif\|enduntil\|endwhile\|loop\|next\)\>'
60    " this line closed a block
61    let l:ind -= s:sw()
62  endif
63
64  return l:ind
65endfunction
66
67" vim: ts=8 sw=2 sts=2
68