mirror of
https://github.com/neovim/neovim.git
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096cb572af
closes: vim/vim#15993
5ca8f223f0
Co-authored-by: Serhii Khoma <srghma@gmail.com>
Co-authored-by: Christian Clason <ch.clason+github@icloud.com>
184 lines
4.4 KiB
VimL
184 lines
4.4 KiB
VimL
" Vim indent file
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" Language: Idris 2
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" Maintainer: Idris Hackers (https://github.com/edwinb/idris2-vim), Serhii Khoma <srghma@gmail.com>
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" Author: raichoo <raichoo@googlemail.com>
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" Last Change: 2024 Nov 05
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" License: Vim (see :h license)
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" Repository: https://github.com/ShinKage/idris2-nvim
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"
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" indentation for idris (idris-lang.org)
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"
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" Based on haskell indentation by motemen <motemen@gmail.com>
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"
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" Indentation configuration variables:
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"
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" g:idris2_indent_if (default: 3)
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" Controls indentation after 'if' statements
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" Example:
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" if condition
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" >>>then expr
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" >>>else expr
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"
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" g:idris2_indent_case (default: 5)
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" Controls indentation of case expressions
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" Example:
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" case x of
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" >>>>>Left y => ...
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" >>>>>Right z => ...
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"
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" g:idris2_indent_let (default: 4)
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" Controls indentation after 'let' bindings
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" Example:
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" let x = expr in
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" >>>>body
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"
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" g:idris2_indent_rewrite (default: 8)
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" Controls indentation after 'rewrite' expressions
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" Example:
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" rewrite proof in
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" >>>>>>>>expr
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"
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" g:idris2_indent_where (default: 6)
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" Controls indentation of 'where' blocks
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" Example:
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" function args
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" >>>>>>where helper = expr
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"
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" g:idris2_indent_do (default: 3)
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" Controls indentation in 'do' blocks
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" Example:
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" do x <- action
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" >>>y <- action
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"
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" Example configuration in .vimrc:
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" let g:idris2_indent_if = 2
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if exists('b:did_indent')
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finish
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endif
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setlocal indentexpr=GetIdrisIndent()
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setlocal indentkeys=!^F,o,O,}
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let b:did_indent = 1
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let b:undo_indent = "setlocal indentexpr< indentkeys<"
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" we want to use line continuations (\) BEGINNING
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let s:cpo_save = &cpo
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set cpo&vim
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" Define defaults for indent configuration
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let s:indent_defaults = {
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\ 'idris2_indent_if': 3,
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\ 'idris2_indent_case': 5,
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\ 'idris2_indent_let': 4,
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\ 'idris2_indent_rewrite': 8,
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\ 'idris2_indent_where': 6,
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\ 'idris2_indent_do': 3
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\ }
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" we want to use line continuations (\) END
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let &cpo = s:cpo_save
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unlet s:cpo_save
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" Set up indent settings with user overrides
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for [key, default] in items(s:indent_defaults)
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let varname = 'g:' . key
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if !exists(varname)
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execute 'let' varname '=' default
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endif
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endfor
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if exists("*GetIdrisIndent")
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finish
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endif
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function! GetIdrisIndent()
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let prevline = getline(v:lnum - 1)
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if prevline =~ '\s\+(\s*.\+\s\+:\s\+.\+\s*)\s\+->\s*$'
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return match(prevline, '(')
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elseif prevline =~ '\s\+{\s*.\+\s\+:\s\+.\+\s*}\s\+->\s*$'
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return match(prevline, '{')
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endif
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if prevline =~ '[!#$%&*+./<>?@\\^|~-]\s*$'
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let s = match(prevline, '[:=]')
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if s > 0
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return s + 2
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else
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return match(prevline, '\S')
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endif
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endif
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if prevline =~ '[{([][^})\]]\+$'
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return match(prevline, '[{([]')
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endif
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if prevline =~ '\<let\>\s\+.\+\<in\>\s*$'
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return match(prevline, '\<let\>') + g:idris2_indent_let
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endif
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if prevline =~ '\<rewrite\>\s\+.\+\<in\>\s*$'
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return match(prevline, '\<rewrite\>') + g:idris2_indent_rewrite
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endif
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if prevline !~ '\<else\>'
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let s = match(prevline, '\<if\>.*\&.*\zs\<then\>')
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if s > 0
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return s
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endif
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let s = match(prevline, '\<if\>')
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if s > 0
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return s + g:idris2_indent_if
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endif
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endif
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if prevline =~ '\(\<where\>\|\<do\>\|=\|[{([]\)\s*$'
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return match(prevline, '\S') + &shiftwidth
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endif
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if prevline =~ '\<where\>\s\+\S\+.*$'
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return match(prevline, '\<where\>') + g:idris2_indent_where
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endif
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if prevline =~ '\<do\>\s\+\S\+.*$'
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return match(prevline, '\<do\>') + g:idris2_indent_do
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endif
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if prevline =~ '^\s*\<\(co\)\?data\>\s\+[^=]\+\s\+=\s\+\S\+.*$'
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return match(prevline, '=')
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endif
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if prevline =~ '\<with\>\s\+([^)]*)\s*$'
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return match(prevline, '\S') + &shiftwidth
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endif
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if prevline =~ '\<case\>\s\+.\+\<of\>\s*$'
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return match(prevline, '\<case\>') + g:idris2_indent_case
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endif
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if prevline =~ '^\s*\(\<namespace\>\|\<\(co\)\?data\>\)\s\+\S\+\s*$'
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return match(prevline, '\(\<namespace\>\|\<\(co\)\?data\>\)') + &shiftwidth
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endif
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if prevline =~ '^\s*\(\<using\>\|\<parameters\>\)\s*([^(]*)\s*$'
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return match(prevline, '\(\<using\>\|\<parameters\>\)') + &shiftwidth
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endif
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if prevline =~ '^\s*\<mutual\>\s*$'
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return match(prevline, '\<mutual\>') + &shiftwidth
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endif
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let line = getline(v:lnum)
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if (line =~ '^\s*}\s*' && prevline !~ '^\s*;')
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return match(prevline, '\S') - &shiftwidth
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endif
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return match(prevline, '\S')
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endfunction
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" vim:et:sw=2:sts=2
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