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if exists('g:polyglot_disabled') && index(g:polyglot_disabled, 'kotlin') != -1
finish
endif
" Vim indent file
" Language: Kotlin
" Maintainer: Alexander Udalov
" Latest Revision: 15 July 2017
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal cinoptions& cinoptions+=j1,L0
setlocal indentexpr=GetKotlinIndent()
setlocal indentkeys=0},0),!^F,o,O,e,<CR>
setlocal autoindent " TODO ?
" TODO teach it to count bracket balance, etc.
function! GetKotlinIndent()
if v:lnum == 0
return 0
endif
let prev_num = prevnonblank(v:lnum - 1)
let prev = getline(prev_num)
let prev_indent = indent(prev_num)
let cur = getline(v:lnum)
if cur =~ '^\s*\*'
return cindent(v:lnum)
endif
if prev =~ '^\s*\*/'
let st = prev
while st > 1
if getline(st) =~ '^\s*/\*'
break
endif
let st = st - 1
endwhile
return indent(st)
endif
let prev_open_paren = prev =~ '^.*(\s*$'
let cur_close_paren = cur =~ '^\s*).*$'
if prev_open_paren && !cur_close_paren
return prev_indent + 2 * &shiftwidth
endif
if cur_close_paren && !prev_open_paren
return prev_indent - 2 * &shiftwidth
endif
let prev_open_brace = prev =~ '^.*\({\|->\)\s*$'
let cur_close_brace = cur =~ '^\s*}.*$'
if prev_open_brace && !cur_close_brace
return prev_indent + &shiftwidth
endif
if cur_close_brace && !prev_open_brace
return prev_indent - &shiftwidth
endif
return prev_indent
endfunction
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