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-rw-r--r--runtime/indent/scala.vim612
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diff --git a/runtime/indent/scala.vim b/runtime/indent/scala.vim
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+" Vim indent file
+" Language: Scala (http://scala-lang.org/)
+" Original Author: Stefan Matthias Aust
+" Modifications By: Derek Wyatt
+" URL: https://github.com/derekwyatt/vim-scala
+" Last Change: 2016 Aug 26
+
+if exists("b:did_indent")
+ finish
+endif
+let b:did_indent = 1
+
+setlocal autoindent
+setlocal indentexpr=GetScalaIndent()
+setlocal indentkeys=0{,0},0),!^F,<>>,o,O,e,=case,<CR>
+
+if exists("*GetScalaIndent")
+ finish
+endif
+let s:keepcpo= &cpo
+set cpo&vim
+
+let s:annotationMatcher = '@[A-Za-z._]\+\s\+'
+let s:modifierMatcher = s:annotationMatcher . '\|\%(private\|protected\)\%(\[[^\]]*\]\)\?\s\+\|abstract\s\+\|override\s\+\|final\s\+'
+let s:defMatcher = '\%(' . s:modifierMatcher . '\)*\<def\>'
+let s:valMatcher = '\%(' . s:modifierMatcher . '\|lazy\s\+\)*\<va[lr]\>'
+let s:funcNameMatcher = '\w\+'
+let s:typeSpecMatcher = '\%(\s*\[\_[^\]]*\]\)'
+let s:defArgMatcher = '\%((\_.\{-})\)'
+let s:returnTypeMatcher = '\%(:\s*\w\+' . s:typeSpecMatcher . '\?\)'
+let g:fullDefMatcher = '^\s*' . s:defMatcher . '\s\+' . s:funcNameMatcher . '\s*' . s:typeSpecMatcher . '\?\s*' . s:defArgMatcher . '\?\s*' . s:returnTypeMatcher . '\?\s*[={]'
+
+function! scala#ConditionalConfirm(msg)
+ if 0
+ call confirm(a:msg)
+ endif
+endfunction
+
+function! scala#GetLine(lnum)
+ let line = substitute(getline(a:lnum), '//.*$', '', '')
+ let line = substitute(line, '"\(.\|\\"\)\{-}"', '""', 'g')
+ return line
+endfunction
+
+function! scala#CountBrackets(line, openBracket, closedBracket)
+ let line = substitute(a:line, '"\(.\|\\"\)\{-}"', '', 'g')
+ let open = substitute(line, '[^' . a:openBracket . ']', '', 'g')
+ let close = substitute(line, '[^' . a:closedBracket . ']', '', 'g')
+ return strlen(open) - strlen(close)
+endfunction
+
+function! scala#CountParens(line)
+ return scala#CountBrackets(a:line, '(', ')')
+endfunction
+
+function! scala#CountCurlies(line)
+ return scala#CountBrackets(a:line, '{', '}')
+endfunction
+
+function! scala#LineEndsInIncomplete(line)
+ if a:line =~ '[.,]\s*$'
+ return 1
+ else
+ return 0
+ endif
+endfunction
+
+function! scala#LineIsAClosingXML(line)
+ if a:line =~ '^\s*</\w'
+ return 1
+ else
+ return 0
+ endif
+endfunction
+
+function! scala#LineCompletesXML(lnum, line)
+ let savedpos = getpos('.')
+ call setpos('.', [savedpos[0], a:lnum, 0, savedpos[3]])
+ let tag = substitute(a:line, '^.*</\([^>]*\)>.*$', '\1', '')
+ let [lineNum, colnum] = searchpairpos('<' . tag . '>', '', '</' . tag . '>', 'Wbn')
+ call setpos('.', savedpos)
+ let pline = scala#GetLine(prevnonblank(lineNum - 1))
+ if pline =~ '=\s*$'
+ return 1
+ else
+ return 0
+ endif
+endfunction
+
+function! scala#IsParentCase()
+ let savedpos = getpos('.')
+ call setpos('.', [savedpos[0], savedpos[1], 0, savedpos[3]])
+ let [l, c] = searchpos('^\s*\%(' . s:defMatcher . '\|\%(\<case\>\)\)', 'bnW')
+ let retvalue = -1
+ if l != 0 && search('\%' . l . 'l\s*\<case\>', 'bnW')
+ let retvalue = l
+ endif
+ call setpos('.', savedpos)
+ return retvalue
+endfunction
+
+function! scala#CurlyMatcher()
+ let matchline = scala#GetLineThatMatchesBracket('{', '}')
+ if scala#CountParens(scala#GetLine(matchline)) < 0
+ let savedpos = getpos('.')
+ call setpos('.', [savedpos[0], matchline, 9999, savedpos[3]])
+ call searchpos('{', 'Wbc')
+ call searchpos(')', 'Wb')
+ let [lnum, colnum] = searchpairpos('(', '', ')', 'Wbn')
+ call setpos('.', savedpos)
+ let line = scala#GetLine(lnum)
+ if line =~ '^\s*' . s:defMatcher
+ return lnum
+ else
+ return matchline
+ endif
+ else
+ return matchline
+ endif
+endfunction
+
+function! scala#GetLineAndColumnThatMatchesCurly()
+ return scala#GetLineAndColumnThatMatchesBracket('{', '}')
+endfunction
+
+function! scala#GetLineAndColumnThatMatchesParen()
+ return scala#GetLineAndColumnThatMatchesBracket('(', ')')
+endfunction
+
+function! scala#GetLineAndColumnThatMatchesBracket(openBracket, closedBracket)
+ let savedpos = getpos('.')
+ let curline = scala#GetLine(line('.'))
+ if curline =~ a:closedBracket . '.*' . a:openBracket . '.*' . a:closedBracket
+ call setpos('.', [savedpos[0], savedpos[1], 0, savedpos[3]])
+ call searchpos(a:closedBracket . '\ze[^' . a:closedBracket . a:openBracket . ']*' . a:openBracket, 'W')
+ else
+ call setpos('.', [savedpos[0], savedpos[1], 9999, savedpos[3]])
+ call searchpos(a:closedBracket, 'Wbc')
+ endif
+ let [lnum, colnum] = searchpairpos(a:openBracket, '', a:closedBracket, 'Wbn')
+ call setpos('.', savedpos)
+ return [lnum, colnum]
+endfunction
+
+function! scala#GetLineThatMatchesCurly()
+ return scala#GetLineThatMatchesBracket('{', '}')
+endfunction
+
+function! scala#GetLineThatMatchesParen()
+ return scala#GetLineThatMatchesBracket('(', ')')
+endfunction
+
+function! scala#GetLineThatMatchesBracket(openBracket, closedBracket)
+ let [lnum, colnum] = scala#GetLineAndColumnThatMatchesBracket(a:openBracket, a:closedBracket)
+ return lnum
+endfunction
+
+function! scala#NumberOfBraceGroups(line)
+ let line = substitute(a:line, '[^()]', '', 'g')
+ if strlen(line) == 0
+ return 0
+ endif
+ let line = substitute(line, '^)*', '', 'g')
+ if strlen(line) == 0
+ return 0
+ endif
+ let line = substitute(line, '^(', '', 'g')
+ if strlen(line) == 0
+ return 0
+ endif
+ let c = 1
+ let counter = 0
+ let groupCount = 0
+ while counter < strlen(line)
+ let char = strpart(line, counter, 1)
+ if char == '('
+ let c = c + 1
+ elseif char == ')'
+ let c = c - 1
+ endif
+ if c == 0
+ let groupCount = groupCount + 1
+ endif
+ let counter = counter + 1
+ endwhile
+ return groupCount
+endfunction
+
+function! scala#MatchesIncompleteDefValr(line)
+ if a:line =~ '^\s*\%(' . s:defMatcher . '\|' . s:valMatcher . '\).*[=({]\s*$'
+ return 1
+ else
+ return 0
+ endif
+endfunction
+
+function! scala#LineIsCompleteIf(line)
+ if scala#CountBrackets(a:line, '{', '}') == 0 &&
+ \ scala#CountBrackets(a:line, '(', ')') == 0 &&
+ \ a:line =~ '^\s*\<if\>\s*([^)]*)\s*\S.*$'
+ return 1
+ else
+ return 0
+ endif
+endfunction
+
+function! scala#LineCompletesIfElse(lnum, line)
+ if a:line =~ '^\s*\%(\<if\>\|\%(}\s*\)\?\<else\>\)'
+ return 0
+ endif
+ 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')
+ if result != 0 && scala#GetLine(prevnonblank(a:lnum - 1)) !~ '{\s*$'
+ return result
+ endif
+ return 0
+endfunction
+
+function! scala#GetPrevCodeLine(lnum)
+ " This needs to skip comment lines
+ return prevnonblank(a:lnum - 1)
+endfunction
+
+function! scala#InvertBracketType(openBracket, closedBracket)
+ if a:openBracket == '('
+ return [ '{', '}' ]
+ else
+ return [ '(', ')' ]
+ endif
+endfunction
+
+function! scala#Testhelper(lnum, line, openBracket, closedBracket, iteration)
+ let bracketCount = scala#CountBrackets(a:line, a:openBracket, a:closedBracket)
+ " There are more '}' braces than '{' on this line so it may be completing the function definition
+ if bracketCount < 0
+ let [matchedLNum, matchedColNum] = scala#GetLineAndColumnThatMatchesBracket(a:openBracket, a:closedBracket)
+ if matchedLNum == a:lnum
+ return -1
+ endif
+ let matchedLine = scala#GetLine(matchedLNum)
+ if ! scala#MatchesIncompleteDefValr(matchedLine)
+ let bracketLine = substitute(substitute(matchedLine, '\%' . matchedColNum . 'c.*$', '', ''), '[^{}()]', '', 'g')
+ if bracketLine =~ '}$'
+ return scala#Testhelper(matchedLNum, matchedLine, '{', '}', a:iteration + 1)
+ elseif bracketLine =~ ')$'
+ return scala#Testhelper(matchedLNum, matchedLine, '(', ')', a:iteration + 1)
+ else
+ let prevCodeLNum = scala#GetPrevCodeLine(matchedLNum)
+ if scala#MatchesIncompleteDefValr(scala#GetLine(prevCodeLNum))
+ return prevCodeLNum
+ else
+ return -1
+ endif
+ endif
+ else
+ " return indent value instead
+ return matchedLNum
+ endif
+ " There's an equal number of '{' and '}' on this line so it may be a single line function definition
+ elseif bracketCount == 0
+ if a:iteration == 0
+ let otherBracketType = scala#InvertBracketType(a:openBracket, a:closedBracket)
+ return scala#Testhelper(a:lnum, a:line, otherBracketType[0], otherBracketType[1], a:iteration + 1)
+ else
+ let prevCodeLNum = scala#GetPrevCodeLine(a:lnum)
+ let prevCodeLine = scala#GetLine(prevCodeLNum)
+ if scala#MatchesIncompleteDefValr(prevCodeLine) && prevCodeLine !~ '{\s*$'
+ return prevCodeLNum
+ else
+ let possibleIfElse = scala#LineCompletesIfElse(a:lnum, a:line)
+ if possibleIfElse != 0
+ let defValrLine = prevnonblank(possibleIfElse - 1)
+ let possibleDefValr = scala#GetLine(defValrLine)
+ if scala#MatchesIncompleteDefValr(possibleDefValr) && possibleDefValr =~ '^.*=\s*$'
+ return possibleDefValr
+ else
+ return -1
+ endif
+ else
+ return -1
+ endif
+ endif
+ endif
+ else
+ return -1
+ endif
+endfunction
+
+function! scala#Test(lnum, line, openBracket, closedBracket)
+ return scala#Testhelper(a:lnum, a:line, a:openBracket, a:closedBracket, 0)
+endfunction
+
+function! scala#LineCompletesDefValr(lnum, line)
+ let bracketCount = scala#CountBrackets(a:line, '{', '}')
+ if bracketCount < 0
+ let matchedBracket = scala#GetLineThatMatchesBracket('{', '}')
+ if ! scala#MatchesIncompleteDefValr(scala#GetLine(matchedBracket))
+ let possibleDefValr = scala#GetLine(prevnonblank(matchedBracket - 1))
+ if matchedBracket != -1 && scala#MatchesIncompleteDefValr(possibleDefValr)
+ return 1
+ else
+ return 0
+ endif
+ else
+ return 0
+ endif
+ elseif bracketCount == 0
+ let bracketCount = scala#CountBrackets(a:line, '(', ')')
+ if bracketCount < 0
+ let matchedBracket = scala#GetLineThatMatchesBracket('(', ')')
+ if ! scala#MatchesIncompleteDefValr(scala#GetLine(matchedBracket))
+ let possibleDefValr = scala#GetLine(prevnonblank(matchedBracket - 1))
+ if matchedBracket != -1 && scala#MatchesIncompleteDefValr(possibleDefValr)
+ return 1
+ else
+ return 0
+ endif
+ else
+ return 0
+ endif
+ elseif bracketCount == 0
+ let possibleDefValr = scala#GetLine(prevnonblank(a:lnum - 1))
+ if scala#MatchesIncompleteDefValr(possibleDefValr) && possibleDefValr =~ '^.*=\s*$'
+ return 1
+ else
+ let possibleIfElse = scala#LineCompletesIfElse(a:lnum, a:line)
+ if possibleIfElse != 0
+ let possibleDefValr = scala#GetLine(prevnonblank(possibleIfElse - 1))
+ if scala#MatchesIncompleteDefValr(possibleDefValr) && possibleDefValr =~ '^.*=\s*$'
+ return 2
+ else
+ return 0
+ endif
+ else
+ return 0
+ endif
+ endif
+ else
+ return 0
+ endif
+ endif
+endfunction
+
+function! scala#SpecificLineCompletesBrackets(lnum, openBracket, closedBracket)
+ let savedpos = getpos('.')
+ call setpos('.', [savedpos[0], a:lnum, 9999, savedpos[3]])
+ let retv = scala#LineCompletesBrackets(a:openBracket, a:closedBracket)
+ call setpos('.', savedpos)
+
+ return retv
+endfunction
+
+function! scala#LineCompletesBrackets(openBracket, closedBracket)
+ let savedpos = getpos('.')
+ let offline = 0
+ while offline == 0
+ let [lnum, colnum] = searchpos(a:closedBracket, 'Wb')
+ let [lnumA, colnumA] = searchpairpos(a:openBracket, '', a:closedBracket, 'Wbn')
+ if lnum != lnumA
+ let [lnumB, colnumB] = searchpairpos(a:openBracket, '', a:closedBracket, 'Wbnr')
+ let offline = 1
+ endif
+ endwhile
+ call setpos('.', savedpos)
+ if lnumA == lnumB && colnumA == colnumB
+ return lnumA
+ else
+ return -1
+ endif
+endfunction
+
+function! GetScalaIndent()
+ " Find a non-blank line above the current line.
+ let prevlnum = prevnonblank(v:lnum - 1)
+
+ " Hit the start of the file, use zero indent.
+ if prevlnum == 0
+ return 0
+ endif
+
+ let ind = indent(prevlnum)
+ let originalIndentValue = ind
+ let prevline = scala#GetLine(prevlnum)
+ let curlnum = v:lnum
+ let curline = scala#GetLine(curlnum)
+ if get(g:, 'scala_scaladoc_indent', 0)
+ let star_indent = 2
+ else
+ let star_indent = 1
+ end
+
+ if prevline =~ '^\s*/\*\*'
+ if prevline =~ '\*/\s*$'
+ return ind
+ else
+ return ind + star_indent
+ endif
+ endif
+
+ if curline =~ '^\s*\*'
+ return cindent(curlnum)
+ endif
+
+ " If this line starts with a { then make it indent the same as the previous line
+ if curline =~ '^\s*{'
+ call scala#ConditionalConfirm("1")
+ " Unless, of course, the previous one is a { as well
+ if prevline !~ '^\s*{'
+ call scala#ConditionalConfirm("2")
+ return indent(prevlnum)
+ endif
+ endif
+
+ " '.' continuations
+ if curline =~ '^\s*\.'
+ if prevline =~ '^\s*\.'
+ return ind
+ else
+ return ind + shiftwidth()
+ endif
+ endif
+
+ " Indent html literals
+ if prevline !~ '/>\s*$' && prevline =~ '^\s*<[a-zA-Z][^>]*>\s*$'
+ call scala#ConditionalConfirm("3")
+ return ind + shiftwidth()
+ endif
+
+ " assumes curly braces around try-block
+ if curline =~ '^\s*}\s*\<catch\>'
+ return ind - shiftwidth()
+ elseif curline =~ '^\s*\<catch\>'
+ return ind
+ endif
+
+ " Add a shiftwidth()' after lines that start a block
+ " If 'if', 'for' or 'while' end with ), this is a one-line block
+ " If 'val', 'var', 'def' end with =, this is a one-line block
+ if (prevline =~ '^\s*\<\%(\%(}\?\s*else\s\+\)\?if\|for\|while\)\>.*[)=]\s*$' && scala#NumberOfBraceGroups(prevline) <= 1)
+ \ || prevline =~ '^\s*' . s:defMatcher . '.*=\s*$'
+ \ || prevline =~ '^\s*' . s:valMatcher . '.*[=]\s*$'
+ \ || prevline =~ '^\s*\%(}\s*\)\?\<else\>\s*$'
+ \ || prevline =~ '=\s*$'
+ call scala#ConditionalConfirm("4")
+ let ind = ind + shiftwidth()
+ elseif prevline =~ '^\s*\<\%(}\?\s*else\s\+\)\?if\>' && curline =~ '^\s*}\?\s*\<else\>'
+ return ind
+ endif
+
+ let lineCompletedBrackets = 0
+ let bracketCount = scala#CountBrackets(prevline, '{', '}')
+ if bracketCount > 0 || prevline =~ '.*{\s*$'
+ call scala#ConditionalConfirm("5b")
+ let ind = ind + shiftwidth()
+ elseif bracketCount < 0
+ call scala#ConditionalConfirm("6b")
+ " if the closing brace actually completes the braces entirely, then we
+ " have to indent to line that started the whole thing
+ let completeLine = scala#LineCompletesBrackets('{', '}')
+ if completeLine != -1
+ call scala#ConditionalConfirm("8b")
+ let prevCompleteLine = scala#GetLine(prevnonblank(completeLine - 1))
+ " However, what actually started this part looks like it was a function
+ " definition, so we need to indent to that line instead. This is
+ " actually pretty weak at the moment.
+ if prevCompleteLine =~ '=\s*$'
+ call scala#ConditionalConfirm("9b")
+ 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: