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" Vim indent file
" Language: C#
" Maintainer: Nick Jensen <nickspoon@gmail.com>
" Former Maintainers: Aquila Deus
" Johannes Zellner <johannes@zellner.org>
" Last Change: 2020-03-26
" License: Vim (see :h license)
" Repository: https://github.com/nickspoons/vim-cs
if exists('b:did_indent')
finish
endif
let b:did_indent = 1
let s:save_cpo = &cpoptions
set cpoptions&vim
setlocal indentexpr=GetCSIndent(v:lnum)
function! s:IsCompilerDirective(line)
" Exclude #region and #endregion - these should be indented normally
return a:line =~# '^\s*#' && !s:IsRegionDirective(a:line)
endf
function! s:IsRegionDirective(line)
return a:line =~# '^\s*#\s*region' || a:line =~# '^\s*#\s*endregion'
endf
function! s:IsAttributeLine(line)
return a:line =~# '^\s*\[[A-Za-z]' && a:line =~# '\]$'
endf
function! s:FindPreviousNonCompilerDirectiveLine(start_lnum)
for delta in range(0, a:start_lnum)
let lnum = a:start_lnum - delta
let line = getline(lnum)
if !s:IsCompilerDirective(line) && !s:IsRegionDirective(line)
return lnum
endif
endfor
return 0
endf
function! GetCSIndent(lnum) abort
" Hit the start of the file, use zero indent.
if a:lnum == 0
return 0
endif
let this_line = getline(a:lnum)
" Compiler directives use zero indent if so configured.
let is_first_col_macro = s:IsCompilerDirective(this_line) && stridx(&l:cinkeys, '0#') >= 0
if is_first_col_macro
return cindent(a:lnum)
endif
let lnum = s:FindPreviousNonCompilerDirectiveLine(a:lnum - 1)
let previous_code_line = getline(lnum)
if s:IsAttributeLine(previous_code_line)
return indent(lnum)
elseif s:IsRegionDirective(this_line)
return cindent(lnum)
else
return cindent(a:lnum)
endif
endfunction
let b:undo_indent = 'setlocal indentexpr<'
let &cpoptions = s:save_cpo
unlet s:save_cpo
" vim:et:sw=2:sts=2
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