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https://github.com/vim/vim.git
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54 lines
1.2 KiB
VimL
54 lines
1.2 KiB
VimL
" Vim indent file
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" Language: ChaiScript
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" Maintainer: Jason Turner <lefticus 'at' gmail com>
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" Last Change: 2022 Apr 06
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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=GetChaiScriptIndent()
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setlocal autoindent
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let b:undo_indent = "setl ai< inde<"
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" Only define the function once.
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if exists("*GetChaiScriptIndent")
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finish
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endif
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function! GetChaiScriptIndent()
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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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" Hit 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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" Add a 'shiftwidth' after lines that start a block:
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" lines containing a {
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let ind = indent(lnum)
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let flag = 0
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let prevline = getline(lnum)
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if prevline =~ '^.*{.*'
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let ind = ind + shiftwidth()
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let flag = 1
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endif
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" Subtract a 'shiftwidth' after lines containing a { followed by a }
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" to keep it balanced
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if flag == 1 && prevline =~ '.*{.*}.*'
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let ind = ind - shiftwidth()
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endif
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" Subtract a 'shiftwidth' on lines ending with }
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if getline(v:lnum) =~ '^\s*\%(}\)'
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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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