64 lines
1.8 KiB
VimL
64 lines
1.8 KiB
VimL
" Vim indent file
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" Language: RPL/2
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" Version: 0.2
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" Last Change: 2017 Jun 13
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" Maintainer: BERTRAND Joël <rpl2@free.fr>
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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 autoindent
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setlocal indentkeys+==~end,=~case,=~if,=~then,=~else,=~do,=~until,=~while,=~repeat,=~select,=~default,=~for,=~start,=~next,=~step,<<>,<>>
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" Define the appropriate indent function but only once
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setlocal indentexpr=RplGetFreeIndent()
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if exists("*RplGetFreeIndent")
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finish
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endif
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let b:undo_indent = "set ai< indentkeys< indentexpr<"
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function RplGetIndent(lnum)
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let ind = indent(a:lnum)
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let prevline=getline(a:lnum)
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" Strip tail comment
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let prevstat=substitute(prevline, '!.*$', '', '')
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" Add a shiftwidth to statements following if, iferr, then, else, elseif,
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" case, select, default, do, until, while, repeat, for, start
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if prevstat =~? '\<\(if\|iferr\|do\|while\)\>' && prevstat =~? '\<end\>'
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elseif prevstat =~? '\(^\|\s\+\)<<\($\|\s\+\)' && prevstat =~? '\s\+>>\($\|\s\+\)'
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elseif prevstat =~? '\<\(if\|iferr\|then\|else\|elseif\|select\|case\|do\|until\|while\|repeat\|for\|start\|default\)\>' || prevstat =~? '\(^\|\s\+\)<<\($\|\s\+\)'
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let ind = ind + shiftwidth()
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endif
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" Subtract a shiftwidth from then, else, elseif, end, until, repeat, next,
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" step
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let line = getline(v:lnum)
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if line =~? '^\s*\(then\|else\|elseif\|until\|repeat\|next\|step\|default\|end\)\>'
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let ind = ind - shiftwidth()
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elseif line =~? '^\s*>>\($\|\s\+\)'
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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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function RplGetFreeIndent()
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" Find the previous non-blank line
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let lnum = prevnonblank(v:lnum - 1)
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" Use zero indent at the top of the file
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if lnum == 0
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return 0
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endif
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let ind=RplGetIndent(lnum)
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return ind
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endfunction
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" vim:sw=2 tw=130
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