mirror of https://github.com/vim/vim.git
130 lines
3.7 KiB
VimL
130 lines
3.7 KiB
VimL
" Vim indent file
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" Language: Vim script
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" Maintainer: Bram Moolenaar <Bram@vim.org>
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" Last Change: 2019 Oct 31
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" Only load this indent file when no other was loaded.
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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=GetVimIndent()
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setlocal indentkeys+==end,=},=else,=cat,=fina,=END,0\\,0=\"\\\
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let b:undo_indent = "setl indentkeys< indentexpr<"
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" Only define the function once.
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if exists("*GetVimIndent")
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finish
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endif
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let s:keepcpo= &cpo
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set cpo&vim
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function GetVimIndent()
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let ignorecase_save = &ignorecase
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try
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let &ignorecase = 0
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return GetVimIndentIntern()
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finally
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let &ignorecase = ignorecase_save
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endtry
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endfunc
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let s:lineContPat = '^\s*\(\\\|"\\ \)'
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function GetVimIndentIntern()
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" Find a non-blank line above the current line.
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let lnum = prevnonblank(v:lnum - 1)
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" If the current line doesn't start with '\' or '"\ ' and below a line that
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" starts with '\' or '"\ ', use the indent of the line above it.
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let cur_text = getline(v:lnum)
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if cur_text !~ s:lineContPat
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while lnum > 0 && getline(lnum) =~ s:lineContPat
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let lnum = lnum - 1
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endwhile
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endif
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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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let prev_text = getline(lnum)
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" Add a 'shiftwidth' after :if, :while, :try, :catch, :finally, :function
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" and :else. Add it three times for a line that starts with '\' or '"\ '
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" after a line that doesn't (or g:vim_indent_cont if it exists).
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let ind = indent(lnum)
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" In heredoc indenting works completely differently.
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if has('syntax_items')
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let syn_here = synIDattr(synID(v:lnum, 1, 1), "name")
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if syn_here =~ 'vimLetHereDocStop'
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" End of heredoc: use indent of matching start line
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let lnum = v:lnum - 1
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while lnum > 0
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if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc'
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return indent(lnum)
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endif
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let lnum -= 1
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endwhile
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return 0
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endif
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if syn_here =~ 'vimLetHereDoc'
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if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc'
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" First line in heredoc: increase indent
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return ind + shiftwidth()
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endif
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" Heredoc continues: no change in indent
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return ind
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endif
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endif
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if cur_text =~ s:lineContPat && v:lnum > 1 && prev_text !~ s:lineContPat
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if exists("g:vim_indent_cont")
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let ind = ind + g:vim_indent_cont
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else
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let ind = ind + shiftwidth() * 3
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endif
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elseif prev_text =~ '^\s*aug\%[roup]\s\+' && prev_text !~ '^\s*aug\%[roup]\s\+[eE][nN][dD]\>'
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let ind = ind + shiftwidth()
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else
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" A line starting with :au does not increment/decrement indent.
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if prev_text !~ '^\s*au\%[tocmd]'
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let i = match(prev_text, '\(^\||\)\s*\({\|\(if\|wh\%[ile]\|for\|try\|cat\%[ch]\|fina\%[lly]\|fu\%[nction]\|def\|el\%[seif]\)\>\)')
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if i >= 0
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let ind += shiftwidth()
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if strpart(prev_text, i, 1) == '|' && has('syntax_items')
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\ && synIDattr(synID(lnum, i, 1), "name") =~ '\(Comment\|String\)$'
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let ind -= shiftwidth()
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endif
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endif
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endif
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endif
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" If the previous line contains an "end" after a pipe, but not in an ":au"
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" command. And not when there is a backslash before the pipe.
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" And when syntax HL is enabled avoid a match inside a string.
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let i = match(prev_text, '[^\\]|\s*\(ene\@!\)')
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if i > 0 && prev_text !~ '^\s*au\%[tocmd]'
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if !has('syntax_items') || synIDattr(synID(lnum, i + 2, 1), "name") !~ '\(Comment\|String\)$'
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let ind = ind - shiftwidth()
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endif
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endif
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" Subtract a 'shiftwidth' on a :endif, :endwhile, :catch, :finally, :endtry,
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" :endfun, :enddef, :else and :augroup END.
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if cur_text =~ '^\s*\(ene\@!\|}\|cat\|fina\|el\|aug\%[roup]\s\+[eE][nN][dD]\)'
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let ind = ind - shiftwidth()
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endif
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return ind
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endfunction
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let &cpo = s:keepcpo
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unlet s:keepcpo
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" vim:sw=2
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