golden hour

/usr/share/vim/vim82/indent

File/Folder	Size	Actions
README.txt	1.65 KB
aap.vim	265 B
ada.vim	10.97 KB
ant.vim	290 B
automake.vim	243 B
awk.vim	7.59 KB
bash.vim	350 B
bib.vim	346 B
bst.vim	1.89 KB
bzl.vim	2.43 KB
c.vim	325 B
cdl.vim	4.15 KB
ch.vim	470 B
chaiscript.vim	1.11 KB
changelog.vim	264 B
clojure.vim	11.39 KB
cmake.vim	2.62 KB
cobol.vim	8.49 KB
config.vim	2.13 KB
context.vim	752 B
cpp.vim	329 B
cs.vim	1.71 KB
css.vim	1.75 KB
cucumber.vim	2.62 KB
cuda.vim	305 B
d.vim	510 B
dictconf.vim	337 B
dictdconf.vim	338 B
docbk.vim	336 B
dosbatch.vim	1.3 KB
dtd.vim	11.59 KB
dtrace.vim	451 B
dune.vim	332 B
dylan.vim	2.64 KB
eiffel.vim	3.24 KB
elm.vim	3.15 KB
erlang.vim	48.89 KB
eruby.vim	2.95 KB
eterm.vim	668 B
falcon.vim	13.75 KB
fortran.vim	7.48 KB
framescript.vim	816 B
gitconfig.vim	841 B
gitolite.vim	1.25 KB
go.vim	1.63 KB
haml.vim	2.15 KB
hamster.vim	1.39 KB
hog.vim	1.85 KB
html.vim	32.75 KB
htmldjango.vim	273 B
idlang.vim	1.58 KB
ishd.vim	1.83 KB
j.vim	1.77 KB
java.vim	4.19 KB
javascript.vim	15 KB
javascriptreact.vim	109 B
json.vim	4.42 KB
jsp.vim	462 B
ld.vim	1.75 KB
less.vim	243 B
lifelines.vim	637 B
liquid.vim	1.85 KB
lisp.vim	353 B
logtalk.vim	1.82 KB
lua.vim	1.88 KB
mail.vim	308 B
make.vim	3.41 KB
matlab.vim	4.73 KB
meson.vim	5.1 KB
mf.vim	156 B
mma.vim	2.18 KB
mp.vim	11.06 KB
nsis.vim	3.18 KB
objc.vim	1.61 KB
ocaml.vim	8.98 KB
occam.vim	4.53 KB
pascal.vim	5.52 KB
perl.vim	5.77 KB
perl6.vim	3.46 KB
php.vim	25.29 KB
postscr.vim	1.61 KB
pov.vim	2.6 KB
prolog.vim	1.76 KB
pyrex.vim	326 B
python.vim	6.77 KB
r.vim	13.71 KB
raml.vim	285 B
readline.vim	711 B
rhelp.vim	2.77 KB
rmd.vim	1.64 KB
rnoweb.vim	1.06 KB
rpl.vim	1.82 KB
rrst.vim	1.17 KB
rst.vim	1.78 KB
ruby.vim	29.41 KB
rust.vim	6.35 KB
sas.vim	5.15 KB
sass.vim	950 B
scala.vim	18.97 KB
scheme.vim	372 B
scss.vim	191 B
sdl.vim	2.73 KB
sh.vim	9.05 KB
sml.vim	6.33 KB
sql.vim	1.18 KB
sqlanywhere.vim	13.11 KB
sshconfig.vim	796 B
systemd.vim	205 B
systemverilog.vim	8.42 KB
tcl.vim	2.45 KB
tcsh.vim	1.24 KB
teraterm.vim	1.33 KB
tex.vim	13.37 KB
tf.vim	1.51 KB
tilde.vim	1013 B
treetop.vim	707 B
typescript.vim	14.14 KB
vb.vim	2.04 KB
verilog.vim	7.97 KB
vhdl.vim	14.32 KB
vim.vim	5.57 KB
vroom.vim	379 B
wast.vim	458 B
xf86conf.vim	709 B
xhtml.vim	269 B
xinetd.vim	1.2 KB
xml.vim	7.43 KB
xsd.vim	253 B
xslt.vim	297 B
yacc.vim	781 B
yaml.vim	5.34 KB
zimbu.vim	3.84 KB
zsh.vim	411 B

Edit: ruby.vim

" Vim indent file
" Language:		Ruby
" Maintainer:		Andrew Radev <andrey.radev@gmail.com>
" Previous Maintainer:	Nikolai Weibull <now at bitwi.se>
" URL:			https://github.com/vim-ruby/vim-ruby
" Release Coordinator:	Doug Kearns <dougkearns@gmail.com>

" 0. Initialization {{{1
" =================

" Only load this indent file when no other was loaded.
if exists("b:did_indent")
  finish
endif
let b:did_indent = 1

if !exists('g:ruby_indent_access_modifier_style')
  " Possible values: "normal", "indent", "outdent"
  let g:ruby_indent_access_modifier_style = 'normal'
endif

if !exists('g:ruby_indent_assignment_style')
  " Possible values: "variable", "hanging"
  let g:ruby_indent_assignment_style = 'hanging'
endif

if !exists('g:ruby_indent_block_style')
  " Possible values: "expression", "do"
  let g:ruby_indent_block_style = 'do'
endif

if !exists('g:ruby_indent_hanging_elements')
  " Non-zero means hanging indents are enabled, zero means disabled
  let g:ruby_indent_hanging_elements = 1
endif

setlocal nosmartindent

" Now, set up our indentation expression and keys that trigger it.
setlocal indentexpr=GetRubyIndent(v:lnum)
setlocal indentkeys=0{,0},0),0],!^F,o,O,e,:,.
setlocal indentkeys+==end,=else,=elsif,=when,=ensure,=rescue,==begin,==end
setlocal indentkeys+==private,=protected,=public

" Only define the function once.
if exists("*GetRubyIndent")
  finish
endif

let s:cpo_save = &cpo
set cpo&vim

" 1. Variables {{{1
" ============

" Syntax group names that are strings.
let s:syng_string =
      \ ['String', 'Interpolation', 'InterpolationDelimiter', 'StringEscape']

" Syntax group names that are strings or documentation.
let s:syng_stringdoc = s:syng_string + ['Documentation']

" Syntax group names that are or delimit strings/symbols/regexes or are comments.
let s:syng_strcom = s:syng_stringdoc + [
      \ 'Character',
      \ 'Comment',
      \ 'HeredocDelimiter',
      \ 'PercentRegexpDelimiter',
      \ 'PercentStringDelimiter',
      \ 'PercentSymbolDelimiter',
      \ 'Regexp',
      \ 'RegexpCharClass',
      \ 'RegexpDelimiter',
      \ 'RegexpEscape',
      \ 'StringDelimiter',
      \ 'Symbol',
      \ 'SymbolDelimiter',
      \ ]

" Expression used to check whether we should skip a match with searchpair().
let s:skip_expr =
      \ 'index(map('.string(s:syng_strcom).',"hlID(''ruby''.v:val)"), synID(line("."),col("."),1)) >= 0'

" Regex that defines the start-match for the 'end' keyword.
"let s:end_start_regex = '\%(^\|[^.]\)\<\%(module\|class\|def\|if\|for\|while\|until\|case\|unless\|begin\|do\)\>'
" TODO: the do here should be restricted somewhat (only at end of line)?
let s:end_start_regex =
      \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' .
      \ '\<\%(module\|class\|if\|for\|while\|until\|case\|unless\|begin' .
      \   '\|\%(\K\k*[!?]\?\s\+\)\=def\):\@!\>' .
      \ '\|\%(^\|[^.:@$]\)\@<=\<do:\@!\>'

" Regex that defines the end-match for the 'end' keyword.
let s:end_end_regex = '\%(^\|[^.:@$]\)\@<=\<end:\@!\>'

" Expression used for searchpair() call for finding match for 'end' keyword.
let s:end_skip_expr = s:skip_expr .
      \ ' || (expand("<cword>") == "do"' .
      \ ' && getline(".") =~ "^\\s*\\<\$while\\|until\\|for\$:\\@!\\>")'

" Regex that defines continuation lines, not including (, {, or [.
let s:non_bracket_continuation_regex =
      \ '\%([\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|:\@<![^[:alnum:]:][|&?]\|||\|&&\)\s*\%(#.*\)\=$'

" Regex that defines continuation lines.
let s:continuation_regex =
      \ '\%(%\@<![({[\\.,:*/%+]\|\<and\|\<or\|\%(<%\)\@<![=-]\|:\@<![^[:alnum:]:][|&?]\|||\|&&\)\s*\%(#.*\)\=$'

" Regex that defines continuable keywords
let s:continuable_regex =
      \ '\C\%(^\s*\|[=,*/%+\-|;{]\|<<\|>>\|:\s\)\s*\zs' .
      \ '\<\%(if\|for\|while\|until\|unless\):\@!\>'

" Regex that defines bracket continuations
let s:bracket_continuation_regex = '%\@<!\%([({[]\)\s*\%(#.*\)\=$'

" Regex that defines dot continuations
let s:dot_continuation_regex = '%\@<!\.\s*\%(#.*\)\=$'

" Regex that defines backslash continuations
let s:backslash_continuation_regex = '%\@<!\\\s*$'

" Regex that defines end of bracket continuation followed by another continuation
let s:bracket_switch_continuation_regex = '^$[^(]\+\zs).\+$\+'.s:continuation_regex

" Regex that defines the first part of a splat pattern
let s:splat_regex = '[[,(]\s*\*\s*\%(#.*\)\=$'

" Regex that describes all indent access modifiers
let s:access_modifier_regex = '\C^\s*\%(public\|protected\|private\)\s*\%(#.*\)\=$'

" Regex that describes the indent access modifiers (excludes public)
let s:indent_access_modifier_regex = '\C^\s*\%(protected\|private\)\s*\%(#.*\)\=$'

" Regex that defines blocks.
"
" Note that there's a slight problem with this regex and s:continuation_regex.
" Code like this will be matched by both:
"
"   method_call do |(a, b)|
"
" The reason is that the pipe matches a hanging "|" operator.
"
let s:block_regex =
      \ '\%(\<do:\@!\>\|%\@<!{\)\s*\%(|[^|]*|\)\=\s*\%(#.*\)\=$'

let s:block_continuation_regex = '^\s*[^])}\t ].*'.s:block_regex

" Regex that describes a leading operator (only a method call's dot for now)
let s:leading_operator_regex = '^\s*\%(&\=\.\)'

" 2. GetRubyIndent Function {{{1
" =========================

function! GetRubyIndent(...) abort
  " 2.1. Setup {{{2
  " ----------

let indent_info = {}

" The value of a single shift-width
  if exists('*shiftwidth')
    let indent_info.sw = shiftwidth()
  else
    let indent_info.sw = &sw
  endif

" For the current line, use the first argument if given, else v:lnum
  let indent_info.clnum = a:0 ? a:1 : v:lnum
  let indent_info.cline = getline(indent_info.clnum)

" Set up variables for restoring position in file.  Could use clnum here.
  let indent_info.col = col('.')

" 2.2. Work on the current line {{{2
  " -----------------------------
  let indent_callback_names = [
        \ 's:AccessModifier',
        \ 's:ClosingBracketOnEmptyLine',
        \ 's:BlockComment',
        \ 's:DeindentingKeyword',
        \ 's:MultilineStringOrLineComment',
        \ 's:ClosingHeredocDelimiter',
        \ 's:LeadingOperator',
        \ ]

for callback_name in indent_callback_names
"    Decho "Running: ".callback_name
    let indent = call(function(callback_name), [indent_info])

if indent >= 0
"      Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info)
      return indent
    endif
  endfor

" 2.3. Work on the previous line. {{{2
  " -------------------------------

" Special case: we don't need the real s:PrevNonBlankNonString for an empty
  " line inside a string. And that call can be quite expensive in that
  " particular situation.
  let indent_callback_names = [
        \ 's:EmptyInsideString',
        \ ]

for callback_name in indent_callback_names
"    Decho "Running: ".callback_name
    let indent = call(function(callback_name), [indent_info])

if indent >= 0
"      Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info)
      return indent
    endif
  endfor

" Previous line number
  let indent_info.plnum = s:PrevNonBlankNonString(indent_info.clnum - 1)
  let indent_info.pline = getline(indent_info.plnum)

let indent_callback_names = [
        \ 's:StartOfFile',
        \ 's:AfterAccessModifier',
        \ 's:ContinuedLine',
        \ 's:AfterBlockOpening',
        \ 's:AfterHangingSplat',
        \ 's:AfterUnbalancedBracket',
        \ 's:AfterLeadingOperator',
        \ 's:AfterEndKeyword',
        \ 's:AfterIndentKeyword',
        \ ]

for callback_name in indent_callback_names
"    Decho "Running: ".callback_name
    let indent = call(function(callback_name), [indent_info])

if indent >= 0
"      Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info)
      return indent
    endif
  endfor

" 2.4. Work on the MSL line. {{{2
  " --------------------------
  let indent_callback_names = [
        \ 's:PreviousNotMSL',
        \ 's:IndentingKeywordInMSL',
        \ 's:ContinuedHangingOperator',
        \ ]

" Most Significant line based on the previous one -- in case it's a
  " contination of something above
  let indent_info.plnum_msl = s:GetMSL(indent_info.plnum)

for callback_name in indent_callback_names
"    Decho "Running: ".callback_name
    let indent = call(function(callback_name), [indent_info])

if indent >= 0
"      Decho "Match: ".callback_name." indent=".indent." info=".string(indent_info)
      return indent
    endif
  endfor

" }}}2

" By default, just return the previous line's indent
"  Decho "Default case matched"
  return indent(indent_info.plnum)
endfunction

" 3. Indenting Logic Callbacks {{{1
" ============================

function! s:AccessModifier(cline_info) abort
  let info = a:cline_info

" If this line is an access modifier keyword, align according to the closest
  " class declaration.
  if g:ruby_indent_access_modifier_style == 'indent'
    if s:Match(info.clnum, s:access_modifier_regex)
      let class_lnum = s:FindContainingClass()
      if class_lnum > 0
        return indent(class_lnum) + info.sw
      endif
    endif
  elseif g:ruby_indent_access_modifier_style == 'outdent'
    if s:Match(info.clnum, s:access_modifier_regex)
      let class_lnum = s:FindContainingClass()
      if class_lnum > 0
        return indent(class_lnum)
      endif
    endif
  endif

return -1
endfunction

function! s:ClosingBracketOnEmptyLine(cline_info) abort
  let info = a:cline_info

" If we got a closing bracket on an empty line, find its match and indent
  " according to it.  For parentheses we indent to its column - 1, for the
  " others we indent to the containing line's MSL's level.  Return -1 if fail.
  let col = matchend(info.cline, '^\s*[]})]')

if col > 0 && !s:IsInStringOrComment(info.clnum, col)
    call cursor(info.clnum, col)
    let closing_bracket = info.cline[col - 1]
    let bracket_pair = strpart('(){}[]', stridx(')}]', closing_bracket) * 2, 2)

if searchpair(escape(bracket_pair[0], '\['), '', bracket_pair[1], 'bW', s:skip_expr) > 0
      if closing_bracket == ')' && col('.') != col('$') - 1
        if g:ruby_indent_hanging_elements
          let ind = virtcol('.') - 1
        else
          let ind = indent(line('.'))
        end
      elseif g:ruby_indent_block_style == 'do'
        let ind = indent(line('.'))
      else " g:ruby_indent_block_style == 'expression'
        let ind = indent(s:GetMSL(line('.')))
      endif
    endif

return ind
  endif

return -1
endfunction

function! s:BlockComment(cline_info) abort
  " If we have a =begin or =end set indent to first column.
  if match(a:cline_info.cline, '^\s*\%(=begin\|=end\)$') != -1
    return 0
  endif
  return -1
endfunction

function! s:DeindentingKeyword(cline_info) abort
  let info = a:cline_info

" If we have a deindenting keyword, find its match and indent to its level.
  " TODO: this is messy
  if s:Match(info.clnum, s:ruby_deindent_keywords)
    call cursor(info.clnum, 1)

if searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW',
          \ s:end_skip_expr) > 0
      let msl  = s:GetMSL(line('.'))
      let line = getline(line('.'))

if s:IsAssignment(line, col('.')) &&
            \ strpart(line, col('.') - 1, 2) !~ 'do'
        " assignment to case/begin/etc, on the same line
        if g:ruby_indent_assignment_style == 'hanging'
          " hanging indent
          let ind = virtcol('.') - 1
        else
          " align with variable
          let ind = indent(line('.'))
        endif
      elseif g:ruby_indent_block_style == 'do'
        " align to line of the "do", not to the MSL
        let ind = indent(line('.'))
      elseif getline(msl) =~ '=\s*$#.*$\=$'
        " in the case of assignment to the MSL, align to the starting line,
        " not to the MSL
        let ind = indent(line('.'))
      else
        " align to the MSL
        let ind = indent(msl)
      endif
    endif
    return ind
  endif

return -1
endfunction

function! s:MultilineStringOrLineComment(cline_info) abort
  let info = a:cline_info

" If we are in a multi-line string or line-comment, don't do anything to it.
  if s:IsInStringOrDocumentation(info.clnum, matchend(info.cline, '^\s*') + 1)
    return indent(info.clnum)
  endif
  return -1
endfunction

function! s:ClosingHeredocDelimiter(cline_info) abort
  let info = a:cline_info

" If we are at the closing delimiter of a "<<" heredoc-style string, set the
  " indent to 0.
  if info.cline =~ '^\k\+\s*$'
        \ && s:IsInStringDelimiter(info.clnum, 1)
        \ && search('\V<<'.info.cline, 'nbW') > 0
    return 0
  endif

return -1
endfunction

function! s:LeadingOperator(cline_info) abort
  " If the current line starts with a leading operator, add a level of indent.
  if s:Match(a:cline_info.clnum, s:leading_operator_regex)
    return indent(s:GetMSL(a:cline_info.clnum)) + a:cline_info.sw
  endif
  return -1
endfunction

function! s:EmptyInsideString(pline_info) abort
  " If the line is empty and inside a string (the previous line is a string,
  " too), use the previous line's indent
  let info = a:pline_info

let plnum = prevnonblank(info.clnum - 1)
  let pline = getline(plnum)

if info.cline =~ '^\s*$'
        \ && s:IsInStringOrComment(plnum, 1)
        \ && s:IsInStringOrComment(plnum, strlen(pline))
    return indent(plnum)
  endif
  return -1
endfunction

function! s:StartOfFile(pline_info) abort
  " At the start of the file use zero indent.
  if a:pline_info.plnum == 0
    return 0
  endif
  return -1
endfunction

function! s:AfterAccessModifier(pline_info) abort
  let info = a:pline_info

if g:ruby_indent_access_modifier_style == 'indent'
    " If the previous line was a private/protected keyword, add a
    " level of indent.
    if s:Match(info.plnum, s:indent_access_modifier_regex)
      return indent(info.plnum) + info.sw
    endif
  elseif g:ruby_indent_access_modifier_style == 'outdent'
    " If the previous line was a private/protected/public keyword, add
    " a level of indent, since the keyword has been out-dented.
    if s:Match(info.plnum, s:access_modifier_regex)
      return indent(info.plnum) + info.sw
    endif
  endif
  return -1
endfunction

" Example:
"
"   if foo || bar ||
"       baz || bing
"     puts "foo"
"   end
"
function! s:ContinuedLine(pline_info) abort
  let info = a:pline_info

let col = s:Match(info.plnum, s:ruby_indent_keywords)
  if s:Match(info.plnum, s:continuable_regex) &&
        \ s:Match(info.plnum, s:continuation_regex)
    if col > 0 && s:IsAssignment(info.pline, col)
      if g:ruby_indent_assignment_style == 'hanging'
        " hanging indent
        let ind = col - 1
      else
        " align with variable
        let ind = indent(info.plnum)
      endif
    else
      let ind = indent(s:GetMSL(info.plnum))
    endif
    return ind + info.sw + info.sw
  endif
  return -1
endfunction

function! s:AfterBlockOpening(pline_info) abort
  let info = a:pline_info

" If the previous line ended with a block opening, add a level of indent.
  if s:Match(info.plnum, s:block_regex)
    if g:ruby_indent_block_style == 'do'
      " don't align to the msl, align to the "do"
      let ind = indent(info.plnum) + info.sw
    else
      let plnum_msl = s:GetMSL(info.plnum)

if getline(plnum_msl) =~ '=\s*$#.*$\=$'
        " in the case of assignment to the msl, align to the starting line,
        " not to the msl
        let ind = indent(info.plnum) + info.sw
      else
        let ind = indent(plnum_msl) + info.sw
      endif
    endif

return ind
  endif

return -1
endfunction

function! s:AfterLeadingOperator(pline_info) abort
  " If the previous line started with a leading operator, use its MSL's level
  " of indent
  if s:Match(a:pline_info.plnum, s:leading_operator_regex)
    return indent(s:GetMSL(a:pline_info.plnum))
  endif
  return -1
endfunction

function! s:AfterHangingSplat(pline_info) abort
  let info = a:pline_info

" If the previous line ended with the "*" of a splat, add a level of indent
  if info.pline =~ s:splat_regex
    return indent(info.plnum) + info.sw
  endif
  return -1
endfunction

function! s:AfterUnbalancedBracket(pline_info) abort
  let info = a:pline_info

" If the previous line contained unclosed opening brackets and we are still
  " in them, find the rightmost one and add indent depending on the bracket
  " type.
  "
  " If it contained hanging closing brackets, find the rightmost one, find its
  " match and indent according to that.
  if info.pline =~ '[[({]' || info.pline =~ '[])}]\s*\%(#.*\)\=$'
    let [opening, closing] = s:ExtraBrackets(info.plnum)

if opening.pos != -1
      if !g:ruby_indent_hanging_elements
        return indent(info.plnum) + info.sw
      elseif opening.type == '(' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0
        if col('.') + 1 == col('$')
          return indent(info.plnum) + info.sw
        else
          return virtcol('.')
        endif
      else
        let nonspace = matchend(info.pline, '\S', opening.pos + 1) - 1
        return nonspace > 0 ? nonspace : indent(info.plnum) + info.sw
      endif
    elseif closing.pos != -1
      call cursor(info.plnum, closing.pos + 1)
      normal! %

if s:Match(line('.'), s:ruby_indent_keywords)
        return indent('.') + info.sw
      else
        return indent(s:GetMSL(line('.')))
      endif
    else
      call cursor(info.clnum, info.col)
    end
  endif

return -1
endfunction

function! s:AfterEndKeyword(pline_info) abort
  let info = a:pline_info
  " If the previous line ended with an "end", match that "end"s beginning's
  " indent.
  let col = s:Match(info.plnum, '\%(^\|[^.:@$]\)\<end\>\s*\%(#.*\)\=$')
  if col > 0
    call cursor(info.plnum, col)
    if searchpair(s:end_start_regex, '', s:end_end_regex, 'bW',
          \ s:end_skip_expr) > 0
      let n = line('.')
      let ind = indent('.')
      let msl = s:GetMSL(n)
      if msl != n
        let ind = indent(msl)
      end
      return ind
    endif
  end
  return -1
endfunction

function! s:AfterIndentKeyword(pline_info) abort
  let info = a:pline_info
  let col = s:Match(info.plnum, s:ruby_indent_keywords)

if col > 0
    call cursor(info.plnum, col)
    let ind = virtcol('.') - 1 + info.sw
    " TODO: make this better (we need to count them) (or, if a searchpair
    " fails, we know that something is lacking an end and thus we indent a
    " level
    if s:Match(info.plnum, s:end_end_regex)
      let ind = indent('.')
    elseif s:IsAssignment(info.pline, col)
      if g:ruby_indent_assignment_style == 'hanging'
        " hanging indent
        let ind = col + info.sw - 1
      else
        " align with variable
        let ind = indent(info.plnum) + info.sw
      endif
    endif
    return ind
  endif

return -1
endfunction

function! s:PreviousNotMSL(msl_info) abort
  let info = a:msl_info

" If the previous line wasn't a MSL
  if info.plnum != info.plnum_msl
    " If previous line ends bracket and begins non-bracket continuation decrease indent by 1.
    if s:Match(info.plnum, s:bracket_switch_continuation_regex)
      " TODO (2016-10-07) Wrong/unused? How could it be "1"?
      return indent(info.plnum) - 1
      " If previous line is a continuation return its indent.
    elseif s:Match(info.plnum, s:non_bracket_continuation_regex)
      return indent(info.plnum)
    endif
  endif

return -1
endfunction

function! s:IndentingKeywordInMSL(msl_info) abort
  let info = a:msl_info
  " If the MSL line had an indenting keyword in it, add a level of indent.
  " TODO: this does not take into account contrived things such as
  " module Foo; class Bar; end
  let col = s:Match(info.plnum_msl, s:ruby_indent_keywords)
  if col > 0
    let ind = indent(info.plnum_msl) + info.sw
    if s:Match(info.plnum_msl, s:end_end_regex)
      let ind = ind - info.sw
    elseif s:IsAssignment(getline(info.plnum_msl), col)
      if g:ruby_indent_assignment_style == 'hanging'
        " hanging indent
        let ind = col + info.sw - 1
      else
        " align with variable
        let ind = indent(info.plnum_msl) + info.sw
      endif
    endif
    return ind
  endif
  return -1
endfunction

function! s:ContinuedHangingOperator(msl_info) abort
  let info = a:msl_info

" If the previous line ended with [*+/.,-=], but wasn't a block ending or a
  " closing bracket, indent one extra level.
  if s:Match(info.plnum_msl, s:non_bracket_continuation_regex) && !s:Match(info.plnum_msl, '^\s*$[\])}]\|end$')
    if info.plnum_msl == info.plnum
      let ind = indent(info.plnum_msl) + info.sw
    else
      let ind = indent(info.plnum_msl)
    endif
    return ind
  endif

return -1
endfunction

" 4. Auxiliary Functions {{{1
" ======================

function! s:IsInRubyGroup(groups, lnum, col) abort
  let ids = map(copy(a:groups), 'hlID("ruby".v:val)')
  return index(ids, synID(a:lnum, a:col, 1)) >= 0
endfunction

" Check if the character at lnum:col is inside a string, comment, or is ascii.
function! s:IsInStringOrComment(lnum, col) abort
  return s:IsInRubyGroup(s:syng_strcom, a:lnum, a:col)
endfunction

" Check if the character at lnum:col is inside a string.
function! s:IsInString(lnum, col) abort
  return s:IsInRubyGroup(s:syng_string, a:lnum, a:col)
endfunction

" Check if the character at lnum:col is inside a string or documentation.
function! s:IsInStringOrDocumentation(lnum, col) abort
  return s:IsInRubyGroup(s:syng_stringdoc, a:lnum, a:col)
endfunction

" Check if the character at lnum:col is inside a string delimiter
function! s:IsInStringDelimiter(lnum, col) abort
  return s:IsInRubyGroup(
        \ ['HeredocDelimiter', 'PercentStringDelimiter', 'StringDelimiter'],
        \ a:lnum, a:col
        \ )
endfunction

function! s:IsAssignment(str, pos) abort
  return strpart(a:str, 0, a:pos - 1) =~ '=\s*$'
endfunction

" Find line above 'lnum' that isn't empty, in a comment, or in a string.
function! s:PrevNonBlankNonString(lnum) abort
  let in_block = 0
  let lnum = prevnonblank(a:lnum)
  while lnum > 0
    " Go in and out of blocks comments as necessary.
    " If the line isn't empty (with opt. comment) or in a string, end search.
    let line = getline(lnum)
    if line =~ '^=begin'
      if in_block
        let in_block = 0
      else
        break
      endif
    elseif !in_block && line =~ '^=end'
      let in_block = 1
    elseif !in_block && line !~ '^\s*#.*$' && !(s:IsInStringOrComment(lnum, 1)
          \ && s:IsInStringOrComment(lnum, strlen(line)))
      break
    endif
    let lnum = prevnonblank(lnum - 1)
  endwhile
  return lnum
endfunction

" Find line above 'lnum' that started the continuation 'lnum' may be part of.
function! s:GetMSL(lnum) abort
  " Start on the line we're at and use its indent.
  let msl = a:lnum
  let lnum = s:PrevNonBlankNonString(a:lnum - 1)
  while lnum > 0
    " If we have a continuation line, or we're in a string, use line as MSL.
    " Otherwise, terminate search as we have found our MSL already.
    let line = getline(lnum)

if !s:Match(msl, s:backslash_continuation_regex) &&
          \ s:Match(lnum, s:backslash_continuation_regex)
      " If the current line doesn't end in a backslash, but the previous one
      " does, look for that line's msl
      "
      " Example:
      "   foo = "bar" \
      "     "baz"
      "
      let msl = lnum
    elseif s:Match(msl, s:leading_operator_regex)
      " If the current line starts with a leading operator, keep its indent
      " and keep looking for an MSL.
      let msl = lnum
    elseif s:Match(lnum, s:splat_regex)
      " If the above line looks like the "*" of a splat, use the current one's
      " indentation.
      "
      " Example:
      "   Hash[*
      "     method_call do
      "       something
      "
      return msl
    elseif s:Match(lnum, s:non_bracket_continuation_regex) &&
          \ s:Match(msl, s:non_bracket_continuation_regex)
      " If the current line is a non-bracket continuation and so is the
      " previous one, keep its indent and continue looking for an MSL.
      "
      " Example:
      "   method_call one,
      "     two,
      "     three
      "
      let msl = lnum
    elseif s:Match(lnum, s:dot_continuation_regex) &&
          \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex))
      " If the current line is a bracket continuation or a block-starter, but
      " the previous is a dot, keep going to see if the previous line is the
      " start of another continuation.
      "
      " Example:
      "   parent.
      "     method_call {
      "     three
      "
      let msl = lnum
    elseif s:Match(lnum, s:non_bracket_continuation_regex) &&
          \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex))
      " If the current line is a bracket continuation or a block-starter, but
      " the previous is a non-bracket one, respect the previous' indentation,
      " and stop here.
      "
      " Example:
      "   method_call one,
      "     two {
      "     three
      "
      return lnum
    elseif s:Match(lnum, s:bracket_continuation_regex) &&
          \ (s:Match(msl, s:bracket_continuation_regex) || s:Match(msl, s:block_continuation_regex))
      " If both lines are bracket continuations (the current may also be a
      " block-starter), use the current one's and stop here
      "
      " Example:
      "   method_call(
      "     other_method_call(
      "       foo
      return msl
    elseif s:Match(lnum, s:block_regex) &&
          \ !s:Match(msl, s:continuation_regex) &&
          \ !s:Match(msl, s:block_continuation_regex)
      " If the previous line is a block-starter and the current one is
      " mostly ordinary, use the current one as the MSL.
      "
      " Example:
      "   method_call do
      "     something
      "     something_else
      return msl
    else
      let col = match(line, s:continuation_regex) + 1
      if (col > 0 && !s:IsInStringOrComment(lnum, col))
            \ || s:IsInString(lnum, strlen(line))
        let msl = lnum
      else
        break
      endif
    endif

let lnum = s:PrevNonBlankNonString(lnum - 1)
  endwhile
  return msl
endfunction

" Check if line 'lnum' has more opening brackets than closing ones.
function! s:ExtraBrackets(lnum) abort
  let opening = {'parentheses': [], 'braces': [], 'brackets': []}
  let closing = {'parentheses': [], 'braces': [], 'brackets': []}

let line = getline(a:lnum)
  let pos  = match(line, '[][(){}]', 0)

" Save any encountered opening brackets, and remove them once a matching
  " closing one has been found. If a closing bracket shows up that doesn't
  " close anything, save it for later.
  while pos != -1
    if !s:IsInStringOrComment(a:lnum, pos + 1)
      if line[pos] == '('
        call add(opening.parentheses, {'type': '(', 'pos': pos})
      elseif line[pos] == ')'
        if empty(opening.parentheses)
          call add(closing.parentheses, {'type': ')', 'pos': pos})
        else
          let opening.parentheses = opening.parentheses[0:-2]
        endif
      elseif line[pos] == '{'
        call add(opening.braces, {'type': '{', 'pos': pos})
      elseif line[pos] == '}'
        if empty(opening.braces)
          call add(closing.braces, {'type': '}', 'pos': pos})
        else
          let opening.braces = opening.braces[0:-2]
        endif
      elseif line[pos] == '['
        call add(opening.brackets, {'type': '[', 'pos': pos})
      elseif line[pos] == ']'
        if empty(opening.brackets)
          call add(closing.brackets, {'type': ']', 'pos': pos})
        else
          let opening.brackets = opening.brackets[0:-2]
        endif
      endif
    endif

let pos = match(line, '[][(){}]', pos + 1)
  endwhile

" Find the rightmost brackets, since they're the ones that are important in
  " both opening and closing cases
  let rightmost_opening = {'type': '(', 'pos': -1}
  let rightmost_closing = {'type': ')', 'pos': -1}

for opening in opening.parentheses + opening.braces + opening.brackets
    if opening.pos > rightmost_opening.pos
      let rightmost_opening = opening
    endif
  endfor

for closing in closing.parentheses + closing.braces + closing.brackets
    if closing.pos > rightmost_closing.pos
      let rightmost_closing = closing
    endif
  endfor

return [rightmost_opening, rightmost_closing]
endfunction

function! s:Match(lnum, regex) abort
  let line   = getline(a:lnum)
  let offset = match(line, '\C'.a:regex)
  let col    = offset + 1

while offset > -1 && s:IsInStringOrComment(a:lnum, col)
    let offset = match(line, '\C'.a:regex, offset + 1)
    let col = offset + 1
  endwhile

if offset > -1
    return col
  else
    return 0
  endif
endfunction

" Locates the containing class/module's definition line, ignoring nested classes
" along the way.
"
function! s:FindContainingClass() abort
  let saved_position = getpos('.')

while searchpair(s:end_start_regex, s:end_middle_regex, s:end_end_regex, 'bW',
        \ s:end_skip_expr) > 0
    if expand('<cword>') =~# '\<class\|module\>'
      let found_lnum = line('.')
      call setpos('.', saved_position)
      return found_lnum
    endif
  endwhile

call setpos('.', saved_position)
  return 0
endfunction

" }}}1

let &cpo = s:cpo_save
unlet s:cpo_save

" vim:set sw=2 sts=2 ts=8 et: