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66 lines
1.7 KiB
VimL
66 lines
1.7 KiB
VimL
" IDL (Interactive Data Language) indent file.
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" Language: IDL (ft=idlang)
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" Maintainer: Aleksandar Jelenak <ajelenak AT yahoo.com> (Invalid email address)
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" Doug Kearns <dougkearns@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 indentkeys=o,O,0=endif,0=ENDIF,0=endelse,0=ENDELSE,0=endwhile,0=ENDWHILE,0=endfor,0=ENDFOR,0=endrep,0=ENDREP
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setlocal indentexpr=GetIdlangIndent(v:lnum)
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let b:undo_indent = "setl inde< indk<"
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" Only define the function once.
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if exists("*GetIdlangIndent")
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finish
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endif
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function GetIdlangIndent(lnum)
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" First non-empty line above the current line.
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let pnum = prevnonblank(v:lnum-1)
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" v:lnum is the first non-empty line -- zero indent.
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if pnum == 0
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return 0
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endif
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" Second non-empty line above the current line.
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let pnum2 = prevnonblank(pnum-1)
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" Current indent.
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let curind = indent(pnum)
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" Indenting of continued lines.
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if getline(pnum) =~ '\$\s*\(;.*\)\=$'
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if getline(pnum2) !~ '\$\s*\(;.*\)\=$'
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let curind = curind+shiftwidth()
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endif
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else
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if getline(pnum2) =~ '\$\s*\(;.*\)\=$'
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let curind = curind-shiftwidth()
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endif
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endif
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" Indenting blocks of statements.
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if getline(v:lnum) =~? '^\s*\(endif\|endelse\|endwhile\|endfor\|endrep\)\>'
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if getline(pnum) =~? 'begin\>'
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elseif indent(v:lnum) > curind-shiftwidth()
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let curind = curind-shiftwidth()
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else
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return -1
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endif
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elseif getline(pnum) =~? 'begin\>'
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if indent(v:lnum) < curind+shiftwidth()
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let curind = curind+shiftwidth()
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else
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return -1
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endif
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endif
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return curind
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endfunction
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