616 lines
19 KiB
VimL
616 lines
19 KiB
VimL
" Vim indent file
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" Language: Scala (http://scala-lang.org/)
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" Original Author: Stefan Matthias Aust
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" Modifications By: Derek Wyatt
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" URL: https://github.com/derekwyatt/vim-scala
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" Last Change: 2016 Aug 26
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" 2023 Aug 28 by Vim Project (undo_indent)
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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 indentexpr=GetScalaIndent()
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setlocal indentkeys=0{,0},0),!^F,<>>,o,O,e,=case,<CR>
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let b:undo_indent = "setl ai< inde< indk<"
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if exists("*GetScalaIndent")
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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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let s:annotationMatcher = '@[A-Za-z._]\+\s\+'
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let s:modifierMatcher = s:annotationMatcher . '\|\%(private\|protected\)\%(\[[^\]]*\]\)\?\s\+\|abstract\s\+\|override\s\+\|final\s\+'
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let s:defMatcher = '\%(' . s:modifierMatcher . '\)*\<def\>'
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let s:valMatcher = '\%(' . s:modifierMatcher . '\|lazy\s\+\)*\<va[lr]\>'
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let s:funcNameMatcher = '\w\+'
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let s:typeSpecMatcher = '\%(\s*\[\_[^\]]*\]\)'
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let s:defArgMatcher = '\%((\_.\{-})\)'
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let s:returnTypeMatcher = '\%(:\s*\w\+' . s:typeSpecMatcher . '\?\)'
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let g:fullDefMatcher = '^\s*' . s:defMatcher . '\s\+' . s:funcNameMatcher . '\s*' . s:typeSpecMatcher . '\?\s*' . s:defArgMatcher . '\?\s*' . s:returnTypeMatcher . '\?\s*[={]'
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function! scala#ConditionalConfirm(msg)
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if 0
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call confirm(a:msg)
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endif
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endfunction
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function! scala#GetLine(lnum)
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let line = substitute(getline(a:lnum), '//.*$', '', '')
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let line = substitute(line, '"\(.\|\\"\)\{-}"', '""', 'g')
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return line
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endfunction
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function! scala#CountBrackets(line, openBracket, closedBracket)
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let line = substitute(a:line, '"\(.\|\\"\)\{-}"', '', 'g')
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let open = substitute(line, '[^' . a:openBracket . ']', '', 'g')
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let close = substitute(line, '[^' . a:closedBracket . ']', '', 'g')
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return strlen(open) - strlen(close)
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endfunction
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function! scala#CountParens(line)
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return scala#CountBrackets(a:line, '(', ')')
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endfunction
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function! scala#CountCurlies(line)
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return scala#CountBrackets(a:line, '{', '}')
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endfunction
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function! scala#LineEndsInIncomplete(line)
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if a:line =~ '[.,]\s*$'
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return 1
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else
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return 0
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endif
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endfunction
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function! scala#LineIsAClosingXML(line)
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if a:line =~ '^\s*</\w'
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return 1
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else
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return 0
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endif
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endfunction
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function! scala#LineCompletesXML(lnum, line)
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let savedpos = getpos('.')
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call setpos('.', [savedpos[0], a:lnum, 0, savedpos[3]])
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let tag = substitute(a:line, '^.*</\([^>]*\)>.*$', '\1', '')
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let [lineNum, colnum] = searchpairpos('<' . tag . '>', '', '</' . tag . '>', 'Wbn')
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call setpos('.', savedpos)
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let pline = scala#GetLine(prevnonblank(lineNum - 1))
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if pline =~ '=\s*$'
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return 1
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else
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return 0
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endif
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endfunction
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function! scala#IsParentCase()
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let savedpos = getpos('.')
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call setpos('.', [savedpos[0], savedpos[1], 0, savedpos[3]])
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let [l, c] = searchpos('^\s*\%(' . s:defMatcher . '\|\%(\<case\>\)\)', 'bnW')
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let retvalue = -1
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if l != 0 && search('\%' . l . 'l\s*\<case\>', 'bnW')
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let retvalue = l
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endif
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call setpos('.', savedpos)
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return retvalue
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endfunction
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function! scala#CurlyMatcher()
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let matchline = scala#GetLineThatMatchesBracket('{', '}')
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if scala#CountParens(scala#GetLine(matchline)) < 0
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let savedpos = getpos('.')
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call setpos('.', [savedpos[0], matchline, 9999, savedpos[3]])
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call searchpos('{', 'Wbc')
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call searchpos(')', 'Wb')
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let [lnum, colnum] = searchpairpos('(', '', ')', 'Wbn')
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call setpos('.', savedpos)
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let line = scala#GetLine(lnum)
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if line =~ '^\s*' . s:defMatcher
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return lnum
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else
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return matchline
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endif
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else
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return matchline
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endif
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endfunction
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function! scala#GetLineAndColumnThatMatchesCurly()
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return scala#GetLineAndColumnThatMatchesBracket('{', '}')
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endfunction
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function! scala#GetLineAndColumnThatMatchesParen()
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return scala#GetLineAndColumnThatMatchesBracket('(', ')')
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endfunction
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function! scala#GetLineAndColumnThatMatchesBracket(openBracket, closedBracket)
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let savedpos = getpos('.')
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let curline = scala#GetLine(line('.'))
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if curline =~ a:closedBracket . '.*' . a:openBracket . '.*' . a:closedBracket
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call setpos('.', [savedpos[0], savedpos[1], 0, savedpos[3]])
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call searchpos(a:closedBracket . '\ze[^' . a:closedBracket . a:openBracket . ']*' . a:openBracket, 'W')
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else
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call setpos('.', [savedpos[0], savedpos[1], 9999, savedpos[3]])
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call searchpos(a:closedBracket, 'Wbc')
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endif
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let [lnum, colnum] = searchpairpos(a:openBracket, '', a:closedBracket, 'Wbn')
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call setpos('.', savedpos)
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return [lnum, colnum]
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endfunction
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function! scala#GetLineThatMatchesCurly()
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return scala#GetLineThatMatchesBracket('{', '}')
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endfunction
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function! scala#GetLineThatMatchesParen()
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return scala#GetLineThatMatchesBracket('(', ')')
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endfunction
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function! scala#GetLineThatMatchesBracket(openBracket, closedBracket)
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let [lnum, colnum] = scala#GetLineAndColumnThatMatchesBracket(a:openBracket, a:closedBracket)
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return lnum
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endfunction
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function! scala#NumberOfBraceGroups(line)
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let line = substitute(a:line, '[^()]', '', 'g')
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if strlen(line) == 0
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return 0
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endif
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let line = substitute(line, '^)*', '', 'g')
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if strlen(line) == 0
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return 0
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endif
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let line = substitute(line, '^(', '', 'g')
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if strlen(line) == 0
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return 0
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endif
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let c = 1
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let counter = 0
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let groupCount = 0
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while counter < strlen(line)
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let char = strpart(line, counter, 1)
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if char == '('
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let c = c + 1
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elseif char == ')'
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let c = c - 1
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endif
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if c == 0
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let groupCount = groupCount + 1
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endif
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let counter = counter + 1
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endwhile
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return groupCount
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endfunction
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function! scala#MatchesIncompleteDefValr(line)
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if a:line =~ '^\s*\%(' . s:defMatcher . '\|' . s:valMatcher . '\).*[=({]\s*$'
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return 1
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else
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return 0
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endif
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endfunction
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function! scala#LineIsCompleteIf(line)
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if scala#CountBrackets(a:line, '{', '}') == 0 &&
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\ scala#CountBrackets(a:line, '(', ')') == 0 &&
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\ a:line =~ '^\s*\<if\>\s*([^)]*)\s*\S.*$'
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return 1
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else
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return 0
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endif
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endfunction
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function! scala#LineCompletesIfElse(lnum, line)
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if a:line =~ '^\s*\%(\<if\>\|\%(}\s*\)\?\<else\>\)'
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return 0
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endif
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let result = search('^\%(\s*\<if\>\s*(.*).*\n\|\s*\<if\>\s*(.*)\s*\n.*\n\)\%(\s*\<else\>\s*\<if\>\s*(.*)\s*\n.*\n\)*\%(\s*\<else\>\s*\n\|\s*\<else\>[^{]*\n\)\?\%' . a:lnum . 'l', 'Wbn')
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if result != 0 && scala#GetLine(prevnonblank(a:lnum - 1)) !~ '{\s*$'
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return result
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endif
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return 0
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endfunction
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function! scala#GetPrevCodeLine(lnum)
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" This needs to skip comment lines
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return prevnonblank(a:lnum - 1)
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endfunction
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function! scala#InvertBracketType(openBracket, closedBracket)
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if a:openBracket == '('
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return [ '{', '}' ]
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else
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return [ '(', ')' ]
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endif
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endfunction
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function! scala#Testhelper(lnum, line, openBracket, closedBracket, iteration)
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let bracketCount = scala#CountBrackets(a:line, a:openBracket, a:closedBracket)
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" There are more '}' braces than '{' on this line so it may be completing the function definition
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if bracketCount < 0
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let [matchedLNum, matchedColNum] = scala#GetLineAndColumnThatMatchesBracket(a:openBracket, a:closedBracket)
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if matchedLNum == a:lnum
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return -1
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endif
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let matchedLine = scala#GetLine(matchedLNum)
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if ! scala#MatchesIncompleteDefValr(matchedLine)
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let bracketLine = substitute(substitute(matchedLine, '\%' . matchedColNum . 'c.*$', '', ''), '[^{}()]', '', 'g')
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if bracketLine =~ '}$'
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return scala#Testhelper(matchedLNum, matchedLine, '{', '}', a:iteration + 1)
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elseif bracketLine =~ ')$'
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return scala#Testhelper(matchedLNum, matchedLine, '(', ')', a:iteration + 1)
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else
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let prevCodeLNum = scala#GetPrevCodeLine(matchedLNum)
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if scala#MatchesIncompleteDefValr(scala#GetLine(prevCodeLNum))
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return prevCodeLNum
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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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else
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" return indent value instead
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return matchedLNum
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endif
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" There's an equal number of '{' and '}' on this line so it may be a single line function definition
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elseif bracketCount == 0
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if a:iteration == 0
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let otherBracketType = scala#InvertBracketType(a:openBracket, a:closedBracket)
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return scala#Testhelper(a:lnum, a:line, otherBracketType[0], otherBracketType[1], a:iteration + 1)
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else
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let prevCodeLNum = scala#GetPrevCodeLine(a:lnum)
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let prevCodeLine = scala#GetLine(prevCodeLNum)
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if scala#MatchesIncompleteDefValr(prevCodeLine) && prevCodeLine !~ '{\s*$'
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return prevCodeLNum
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else
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let possibleIfElse = scala#LineCompletesIfElse(a:lnum, a:line)
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if possibleIfElse != 0
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let defValrLine = prevnonblank(possibleIfElse - 1)
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let possibleDefValr = scala#GetLine(defValrLine)
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if scala#MatchesIncompleteDefValr(possibleDefValr) && possibleDefValr =~ '^.*=\s*$'
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return possibleDefValr
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else
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return -1
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endif
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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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endif
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else
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return -1
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endif
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endfunction
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function! scala#Test(lnum, line, openBracket, closedBracket)
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return scala#Testhelper(a:lnum, a:line, a:openBracket, a:closedBracket, 0)
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endfunction
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function! scala#LineCompletesDefValr(lnum, line)
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let bracketCount = scala#CountBrackets(a:line, '{', '}')
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if bracketCount < 0
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let matchedBracket = scala#GetLineThatMatchesBracket('{', '}')
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if ! scala#MatchesIncompleteDefValr(scala#GetLine(matchedBracket))
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let possibleDefValr = scala#GetLine(prevnonblank(matchedBracket - 1))
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if matchedBracket != -1 && scala#MatchesIncompleteDefValr(possibleDefValr)
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return 1
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else
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return 0
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endif
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else
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return 0
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endif
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elseif bracketCount == 0
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let bracketCount = scala#CountBrackets(a:line, '(', ')')
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if bracketCount < 0
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let matchedBracket = scala#GetLineThatMatchesBracket('(', ')')
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if ! scala#MatchesIncompleteDefValr(scala#GetLine(matchedBracket))
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let possibleDefValr = scala#GetLine(prevnonblank(matchedBracket - 1))
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if matchedBracket != -1 && scala#MatchesIncompleteDefValr(possibleDefValr)
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return 1
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else
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return 0
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endif
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else
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return 0
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endif
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elseif bracketCount == 0
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let possibleDefValr = scala#GetLine(prevnonblank(a:lnum - 1))
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if scala#MatchesIncompleteDefValr(possibleDefValr) && possibleDefValr =~ '^.*=\s*$'
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return 1
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else
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let possibleIfElse = scala#LineCompletesIfElse(a:lnum, a:line)
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if possibleIfElse != 0
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let possibleDefValr = scala#GetLine(prevnonblank(possibleIfElse - 1))
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if scala#MatchesIncompleteDefValr(possibleDefValr) && possibleDefValr =~ '^.*=\s*$'
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return 2
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else
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return 0
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endif
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else
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return 0
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endif
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endif
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else
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return 0
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endif
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endif
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endfunction
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function! scala#SpecificLineCompletesBrackets(lnum, openBracket, closedBracket)
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let savedpos = getpos('.')
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call setpos('.', [savedpos[0], a:lnum, 9999, savedpos[3]])
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let retv = scala#LineCompletesBrackets(a:openBracket, a:closedBracket)
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call setpos('.', savedpos)
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return retv
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endfunction
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function! scala#LineCompletesBrackets(openBracket, closedBracket)
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let savedpos = getpos('.')
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let offline = 0
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while offline == 0
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let [lnum, colnum] = searchpos(a:closedBracket, 'Wb')
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let [lnumA, colnumA] = searchpairpos(a:openBracket, '', a:closedBracket, 'Wbn')
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if lnum != lnumA
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let [lnumB, colnumB] = searchpairpos(a:openBracket, '', a:closedBracket, 'Wbnr')
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let offline = 1
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endif
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endwhile
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call setpos('.', savedpos)
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if lnumA == lnumB && colnumA == colnumB
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return lnumA
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else
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return -1
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endif
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endfunction
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function! GetScalaIndent()
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" Find a non-blank line above the current line.
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let prevlnum = prevnonblank(v:lnum - 1)
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" Hit the start of the file, use zero indent.
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if prevlnum == 0
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return 0
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endif
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let ind = indent(prevlnum)
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let originalIndentValue = ind
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let prevline = scala#GetLine(prevlnum)
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let curlnum = v:lnum
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let curline = scala#GetLine(curlnum)
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if get(g:, 'scala_scaladoc_indent', 0)
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let star_indent = 2
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else
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let star_indent = 1
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end
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if prevline =~ '^\s*/\*\*'
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if prevline =~ '\*/\s*$'
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return ind
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else
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return ind + star_indent
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endif
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endif
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if curline =~ '^\s*\*'
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return cindent(curlnum)
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endif
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" If this line starts with a { then make it indent the same as the previous line
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if curline =~ '^\s*{'
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call scala#ConditionalConfirm("1")
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" Unless, of course, the previous one is a { as well
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if prevline !~ '^\s*{'
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call scala#ConditionalConfirm("2")
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return indent(prevlnum)
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endif
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endif
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" '.' continuations
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if curline =~ '^\s*\.'
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if prevline =~ '^\s*\.'
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return ind
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else
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return ind + shiftwidth()
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endif
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endif
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" Indent html literals
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if prevline !~ '/>\s*$' && prevline =~ '^\s*<[a-zA-Z][^>]*>\s*$'
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call scala#ConditionalConfirm("3")
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return ind + shiftwidth()
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endif
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" assumes curly braces around try-block
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if curline =~ '^\s*}\s*\<catch\>'
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return ind - shiftwidth()
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elseif curline =~ '^\s*\<catch\>'
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return ind
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endif
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" Add a shiftwidth()' after lines that start a block
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" If 'if', 'for' or 'while' end with ), this is a one-line block
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" If 'val', 'var', 'def' end with =, this is a one-line block
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if (prevline =~ '^\s*\<\%(\%(}\?\s*else\s\+\)\?if\|for\|while\)\>.*[)=]\s*$' && scala#NumberOfBraceGroups(prevline) <= 1)
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\ || prevline =~ '^\s*' . s:defMatcher . '.*=\s*$'
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\ || prevline =~ '^\s*' . s:valMatcher . '.*[=]\s*$'
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\ || prevline =~ '^\s*\%(}\s*\)\?\<else\>\s*$'
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\ || prevline =~ '=\s*$'
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call scala#ConditionalConfirm("4")
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let ind = ind + shiftwidth()
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elseif prevline =~ '^\s*\<\%(}\?\s*else\s\+\)\?if\>' && curline =~ '^\s*}\?\s*\<else\>'
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return ind
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endif
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let lineCompletedBrackets = 0
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let bracketCount = scala#CountBrackets(prevline, '{', '}')
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if bracketCount > 0 || prevline =~ '.*{\s*$'
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call scala#ConditionalConfirm("5b")
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let ind = ind + shiftwidth()
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elseif bracketCount < 0
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call scala#ConditionalConfirm("6b")
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" if the closing brace actually completes the braces entirely, then we
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" have to indent to line that started the whole thing
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let completeLine = scala#LineCompletesBrackets('{', '}')
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if completeLine != -1
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call scala#ConditionalConfirm("8b")
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let prevCompleteLine = scala#GetLine(prevnonblank(completeLine - 1))
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" However, what actually started this part looks like it was a function
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" definition, so we need to indent to that line instead. This is
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" actually pretty weak at the moment.
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if prevCompleteLine =~ '=\s*$'
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call scala#ConditionalConfirm("9b")
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let ind = indent(prevnonblank(completeLine - 1))
|
|
else
|
|
call scala#ConditionalConfirm("10b")
|
|
let ind = indent(completeLine)
|
|
endif
|
|
else
|
|
let lineCompletedBrackets = 1
|
|
endif
|
|
endif
|
|
|
|
if ind == originalIndentValue
|
|
let bracketCount = scala#CountBrackets(prevline, '(', ')')
|
|
if bracketCount > 0 || prevline =~ '.*(\s*$'
|
|
call scala#ConditionalConfirm("5a")
|
|
let ind = ind + shiftwidth()
|
|
elseif bracketCount < 0
|
|
call scala#ConditionalConfirm("6a")
|
|
" if the closing brace actually completes the braces entirely, then we
|
|
" have to indent to line that started the whole thing
|
|
let completeLine = scala#LineCompletesBrackets('(', ')')
|
|
if completeLine != -1 && prevline !~ '^.*{\s*$'
|
|
call scala#ConditionalConfirm("8a")
|
|
let prevCompleteLine = scala#GetLine(prevnonblank(completeLine - 1))
|
|
" However, what actually started this part looks like it was a function
|
|
" definition, so we need to indent to that line instead. This is
|
|
" actually pretty weak at the moment.
|
|
if prevCompleteLine =~ '=\s*$'
|
|
call scala#ConditionalConfirm("9a")
|
|
let ind = indent(prevnonblank(completeLine - 1))
|
|
else
|
|
call scala#ConditionalConfirm("10a")
|
|
let ind = indent(completeLine)
|
|
endif
|
|
else
|
|
" This is the only part that's different from from the '{', '}' one below
|
|
" Yup... some refactoring is necessary at some point.
|
|
let ind = ind + (bracketCount * shiftwidth())
|
|
let lineCompletedBrackets = 1
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
if curline =~ '^\s*}\?\s*\<else\>\%(\s\+\<if\>\s*(.*)\)\?\s*{\?\s*$' &&
|
|
\ ! scala#LineIsCompleteIf(prevline) &&
|
|
\ prevline !~ '^.*}\s*$'
|
|
let ind = ind - shiftwidth()
|
|
endif
|
|
|
|
" Subtract a shiftwidth()' on '}' or html
|
|
let curCurlyCount = scala#CountCurlies(curline)
|
|
if curCurlyCount < 0
|
|
call scala#ConditionalConfirm("14a")
|
|
let matchline = scala#CurlyMatcher()
|
|
return indent(matchline)
|
|
elseif curline =~ '^\s*</[a-zA-Z][^>]*>'
|
|
call scala#ConditionalConfirm("14c")
|
|
return ind - shiftwidth()
|
|
endif
|
|
|
|
let prevParenCount = scala#CountParens(prevline)
|
|
if prevline =~ '^\s*\<for\>.*$' && prevParenCount > 0
|
|
call scala#ConditionalConfirm("15")
|
|
let ind = indent(prevlnum) + 5
|
|
endif
|
|
|
|
let prevCurlyCount = scala#CountCurlies(prevline)
|
|
if prevCurlyCount == 0 && prevline =~ '^.*\%(=>\|⇒\)\s*$' && prevline !~ '^\s*this\s*:.*\%(=>\|⇒\)\s*$' && curline !~ '^\s*\<case\>'
|
|
call scala#ConditionalConfirm("16")
|
|
let ind = ind + shiftwidth()
|
|
endif
|
|
|
|
if ind == originalIndentValue && curline =~ '^\s*\<case\>'
|
|
call scala#ConditionalConfirm("17")
|
|
let parentCase = scala#IsParentCase()
|
|
if parentCase != -1
|
|
call scala#ConditionalConfirm("17a")
|
|
return indent(parentCase)
|
|
endif
|
|
endif
|
|
|
|
if prevline =~ '^\s*\*/'
|
|
\ || prevline =~ '*/\s*$'
|
|
call scala#ConditionalConfirm("18")
|
|
let ind = ind - star_indent
|
|
endif
|
|
|
|
if scala#LineEndsInIncomplete(prevline)
|
|
call scala#ConditionalConfirm("19")
|
|
return ind
|
|
endif
|
|
|
|
if scala#LineIsAClosingXML(prevline)
|
|
if scala#LineCompletesXML(prevlnum, prevline)
|
|
call scala#ConditionalConfirm("20a")
|
|
return ind - shiftwidth()
|
|
else
|
|
call scala#ConditionalConfirm("20b")
|
|
return ind
|
|
endif
|
|
endif
|
|
|
|
if ind == originalIndentValue
|
|
"let indentMultiplier = scala#LineCompletesDefValr(prevlnum, prevline)
|
|
"if indentMultiplier != 0
|
|
" call scala#ConditionalConfirm("19a")
|
|
" let ind = ind - (indentMultiplier * shiftwidth())
|
|
let defValrLine = scala#Test(prevlnum, prevline, '{', '}')
|
|
if defValrLine != -1
|
|
call scala#ConditionalConfirm("21a")
|
|
let ind = indent(defValrLine)
|
|
elseif lineCompletedBrackets == 0
|
|
call scala#ConditionalConfirm("21b")
|
|
if scala#GetLine(prevnonblank(prevlnum - 1)) =~ '^.*\<else\>\s*\%(//.*\)\?$'
|
|
call scala#ConditionalConfirm("21c")
|
|
let ind = ind - shiftwidth()
|
|
elseif scala#LineCompletesIfElse(prevlnum, prevline)
|
|
call scala#ConditionalConfirm("21d")
|
|
let ind = ind - shiftwidth()
|
|
elseif scala#CountParens(curline) < 0 && curline =~ '^\s*)' && scala#GetLine(scala#GetLineThatMatchesBracket('(', ')')) =~ '.*(\s*$'
|
|
" Handles situations that look like this:
|
|
"
|
|
" val a = func(
|
|
" 10
|
|
" )
|
|
"
|
|
" or
|
|
"
|
|
" val a = func(
|
|
" 10
|
|
" ).somethingHere()
|
|
call scala#ConditionalConfirm("21e")
|
|
let ind = ind - shiftwidth()
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
call scala#ConditionalConfirm("returning " . ind)
|
|
|
|
return ind
|
|
endfunction
|
|
|
|
let &cpo = s:keepcpo
|
|
unlet s:keepcpo
|
|
|
|
" vim:set sw=2 sts=2 ts=8 et:
|
|
" vim600:fdm=marker fdl=1 fdc=0:
|