51 lines
1.8 KiB
VimL
51 lines
1.8 KiB
VimL
" Vim indent file
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" Language: J
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" Maintainer: David Bürgin <dbuergin@gluet.ch>
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" URL: https://gitlab.com/glts/vim-j
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" Last Change: 2015-01-11
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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=GetJIndent()
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setlocal indentkeys-=0{,0},:,0#
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setlocal indentkeys+=0),0<:>,=case.,=catch.,=catchd.,=catcht.,=do.,=else.,=elseif.,=end.,=fcase.
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let b:undo_indent = 'setlocal indentkeys< indentexpr<'
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if exists('*GetJIndent')
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finish
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endif
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" If g:j_indent_definitions is true, the bodies of explicit definitions of
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" adverbs, conjunctions, and verbs will be indented. Default is false (0).
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if !exists('g:j_indent_definitions')
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let g:j_indent_definitions = 0
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endif
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function GetJIndent() abort
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let l:prevlnum = prevnonblank(v:lnum - 1)
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if l:prevlnum == 0
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return 0
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endif
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let l:indent = indent(l:prevlnum)
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let l:prevline = getline(l:prevlnum)
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if l:prevline =~# '^\s*\%(case\|catch[dt]\=\|do\|else\%(if\)\=\|fcase\|for\%(_\a\k*\)\=\|if\|select\|try\|whil\%(e\|st\)\)\.\%(\%(\<end\.\)\@!.\)*$'
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" Increase indentation after an initial control word that starts or
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" continues a block and is not terminated by "end."
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let l:indent += shiftwidth()
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elseif g:j_indent_definitions && (l:prevline =~# '\<\%([1-4]\|13\|adverb\|conjunction\|verb\|monad\|dyad\)\s\+\%(:\s*0\|def\s\+0\|define\)\>' || l:prevline =~# '^\s*:\s*$')
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" Increase indentation in explicit definitions of adverbs, conjunctions,
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" and verbs
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let l:indent += shiftwidth()
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endif
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" Decrease indentation in lines that start with either control words that
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" continue or end a block, or the special items ")" and ":"
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if getline(v:lnum) =~# '^\s*\%()\|:\|\%(case\|catch[dt]\=\|do\|else\%(if\)\=\|end\|fcase\)\.\)'
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let l:indent -= shiftwidth()
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endif
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return l:indent
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endfunction
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