87 lines
1.8 KiB
VimL
87 lines
1.8 KiB
VimL
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if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'nix') == -1
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" Vim indent file
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" Language: Nix
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" Maintainer: Daiderd Jordan <daiderd@gmail.com>
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" URL: https://github.com/LnL7/vim-nix
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if exists("b:did_indent")
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finish
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endif
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let b:did_indent = 1
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setlocal indentexpr=GetNixIndent()
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setlocal indentkeys+=0=then,0=else,0=inherit,*<Return>
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if exists("*GetNixIndent")
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finish
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endif
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let s:cpo_save = &cpo
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set cpo&vim
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let s:skip_syntax = '\%(Comment\|String\)$'
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let s:block_open = '\%({\|[\)'
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let s:block_close = '\%(}\|]\)'
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function! GetNixIndent()
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let lnum = prevnonblank(v:lnum - 1)
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let ind = indent(lnum)
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" At the start of the file use zero indent.
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if lnum == 0
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return 0
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endif
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if synIDattr(synID(v:lnum, 1, 1), "name") !~ s:skip_syntax
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let current_line = getline(v:lnum)
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let last_line = getline(lnum)
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if last_line =~ s:block_open . '\s*$'
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let ind += &sw
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endif
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if current_line =~ '^\s*' . s:block_close
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let ind -= &sw
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endif
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if last_line =~ '\<let\s*$'
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let ind += &sw
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endif
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if getline(v:lnum - 1) =~ '^\<in\s*$'
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let ind += &sw
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endif
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if current_line =~ '^\s*in\>'
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let ind -= &sw
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endif
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endif
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if synIDattr(synID(v:lnum, 1, 1), "name") =~ '^nixString'
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let current_line = getline(v:lnum)
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let ind = indent(v:lnum)
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let bslnum = searchpair('''''', '', '''''', 'bnW',
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\ 'synIDattr(synID(line("."), col("."), 0), "name") =~? "InterpolationSpecial$"')
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if ind <= indent(bslnum)
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let ind = indent(bslnum) + &sw
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endif
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if current_line =~ '^\s*''''[^''\$]'
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let ind = indent(bslnum)
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endif
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if current_line =~ '^\s*''''$'
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let ind = indent(bslnum)
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endif
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endif
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return ind
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endfunction
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let &cpo = s:cpo_save
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unlet s:cpo_save
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endif
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