first-humanoid-dataset

	" Vim indent file
	" Language: Falcon
	" Maintainer: Steven Oliver <oliver.steven@gmail.com>
	" Website: https://steveno@github.com/steveno/falconpl-vim.git
	" Credits: This is, to a great extent, a copy n' paste of ruby.vim.
	" 2022 April: b:undo_indent added by Doug Kearns

	" 1. Setup {{{1
	" ============

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

	setlocal nosmartindent

	" Setup indent function and when to use it
	setlocal indentexpr=FalconGetIndent(v:lnum)
	setlocal indentkeys=0{,0},0),0],!^F,o,O,e
	setlocal indentkeys+==~case,=~catch,=~default,=~elif,=~else,=~end,=~\"

	let b:undo_indent = "setl inde< indk< si<"

	" Define the appropriate indent function but only once
	if exists("*FalconGetIndent")
	finish
	endif

	let s:cpo_save = &cpo
	set cpo&vim

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

	" Regex of syntax group names that are strings AND comments
	let s:syng_strcom = '\<falcon\%(String\\|StringEscape\\|Comment\)\>'

	" Regex of syntax group names that are strings
	let s:syng_string = '\<falcon\%(String\\|StringEscape\)\>'

	" 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(\s\%([@&]\=\h\w,\=\s\)\%(,\s(\s[@&]\=\h\w\s)\s\)\|\)\=\s\%(#.\)\=$'

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

	" Regex that defines continuation lines.
	" TODO: this needs to deal with if ...: and so on
	let s:continuation_regex =
	\ '\%(%\@<![({[\\.,:/%+]\\|\<and\\|\<or\\|\%(<%\)\@<![=-]\\|\W[\|&?]\\|\|\|\\|&&\)\s\%(#.*\)\=$'

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

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

	" Keywords to indent on
	let s:falcon_indent_keywords = '^\s*\(case\\|catch\\|class\\|enum\\|default\\|elif\\|else' .
	\ '\\|for\\|function\\|if."[^"]:."\\|if $\(:$\@!.\)$\\|loop\\|object\\|select' .
	\ '\\|switch\\|try\\|while\\|\w\s=\s\w([$\)'

	" Keywords to deindent on
	let s:falcon_deindent_keywords = '^\s*$case\\|catch\\|default\\|elif\\|else\\|end$'

	" 3. Functions {{{1
	" ============

	" Check if the character at lnum:col is inside a string, comment, or is ascii.
	function s:IsInStringOrComment(lnum, col)
	return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_strcom
	endfunction

	" Check if the character at lnum:col is inside a string.
	function s:IsInString(lnum, col)
	return synIDattr(synID(a:lnum, a:col, 1), 'name') =~ s:syng_string
	endfunction

	" Check if the character at lnum:col is inside a string delimiter
	function s:IsInStringDelimiter(lnum, col)
	return synIDattr(synID(a:lnum, a:col, 1), 'name') == 'falconStringDelimiter'
	endfunction

	" Find line above 'lnum' that isn't empty, in a comment, or in a string.
	function s:PrevNonBlankNonString(lnum)
	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)
	" Start on the line we're at and use its indent.
	let msl = a:lnum
	let msl_body = getline(msl)
	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(line, 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: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 msl_body = getline(msl)
	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)
	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)
	let col = match(getline(a:lnum), '\C'.a:regex) + 1
	return col > 0 && !s:IsInStringOrComment(a:lnum, col) ? col : 0
	endfunction

	function s:MatchLast(lnum, regex)
	let line = getline(a:lnum)
	let col = match(line, '.*\zs' . a:regex)
	while col != -1 && s:IsInStringOrComment(a:lnum, col)
	let line = strpart(line, 0, col)
	let col = match(line, '.*' . a:regex)
	endwhile
	return col + 1
	endfunction

	" 4. FalconGetIndent Routine {{{1
	" ============

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

	" Use zero indent at the top of the file
	if clnum == 0
	return 0
	endif

	let line = getline(clnum)
	let ind = -1

	" 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(line, '^\s*[]})]')
	if col > 0 && !s:IsInStringOrComment(clnum, col)
	call cursor(clnum, col)
	let bs = strpart('(){}[]', stridx(')}]', line[col - 1]) * 2, 2)
	if searchpair(escape(bs[0], '\['), '', bs[1], 'bW', s:skip_expr) > 0
	if line[col-1]==')' && col('.') != col('$') - 1
	let ind = virtcol('.') - 1
	else
	let ind = indent(s:GetMSL(line('.')))
	endif
	endif
	return ind
	endif

	" If we have a deindenting keyword, find its match and indent to its level.
	" TODO: this is messy
	if s:Match(clnum, s:falcon_deindent_keywords)
	call cursor(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 strpart(line, 0, col('.') - 1) =~ '=\s*$' &&
	\ strpart(line, col('.') - 1, 2) !~ 'do'
	let ind = virtcol('.') - 1
	elseif getline(msl) =~ '=\s$#.$\=$'
	let ind = indent(line('.'))
	else
	let ind = indent(msl)
	endif
	endif
	return ind
	endif

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

	" Find a non-blank, non-multi-line string line above the current line.
	let lnum = s:PrevNonBlankNonString(clnum - 1)

	" If the line is empty and inside a string, use the previous line.
	if line =~ '^\s*$' && lnum != prevnonblank(clnum - 1)
	return indent(prevnonblank(clnum))
	endif

	" At the start of the file use zero indent.
	if lnum == 0
	return 0
	endif

	" Set up variables for the previous line.
	let line = getline(lnum)
	let ind = indent(lnum)

	" If the previous line ended with a block opening, add a level of indent.
	if s:Match(lnum, s:block_regex)
	return indent(s:GetMSL(lnum)) + shiftwidth()
	endif

	" If it contained hanging closing brackets, find the rightmost one, find its
	" match and indent according to that.
	if line =~ '[[({]' \|\| line =~ '[])}]\s\%(#.\)\=$'
	let [opening, closing] = s:ExtraBrackets(lnum)

	if opening.pos != -1
	if opening.type == '(' && searchpair('(', '', ')', 'bW', s:skip_expr) > 0
	if col('.') + 1 == col('$')
	return ind + shiftwidth()
	else
	return virtcol('.')
	endif
	else
	let nonspace = matchend(line, '\S', opening.pos + 1) - 1
	return nonspace > 0 ? nonspace : ind + shiftwidth()
	endif
	elseif closing.pos != -1
	call cursor(lnum, closing.pos + 1)
	normal! %

	if s:Match(line('.'), s:falcon_indent_keywords)
	return indent('.') + shiftwidth()
	else
	return indent('.')
	endif
	else
	call cursor(clnum, 0) " FIXME: column was vcol
	end
	endif

	" If the previous line ended with an "end", match that "end"s beginning's
	" indent.
	let col = s:Match(lnum, '\%(^\\|[^.:@$]\)\<end\>\s\%(#.\)\=$')
	if col > 0
	call cursor(lnum, 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

	let col = s:Match(lnum, s:falcon_indent_keywords)
	if col > 0
	call cursor(lnum, col)
	let ind = virtcol('.') - 1 + shiftwidth()
	" 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(lnum, s:end_end_regex)
	let ind = indent('.')
	endif
	return ind
	endif

	" Set up variables to use and search for MSL to the previous line.
	let p_lnum = lnum
	let lnum = s:GetMSL(lnum)

	" If the previous line wasn't a MSL and is continuation return its indent.
	" TODO: the \|\| s:IsInString() thing worries me a bit.
	if p_lnum != lnum
	if s:Match(p_lnum, s:non_bracket_continuation_regex) \|\| s:IsInString(p_lnum,strlen(line))
	return ind
	endif
	endif

	" Set up more variables, now that we know we wasn't continuation bound.
	let line = getline(lnum)
	let msl_ind = indent(lnum)

	" 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
	if s:Match(lnum, s:falcon_indent_keywords)
	let ind = msl_ind + shiftwidth()
	if s:Match(lnum, s:end_end_regex)
	let ind = ind - shiftwidth()
	endif
	return ind
	endif

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

	return ind
	endfunction

	" }}}1

	let &cpo = s:cpo_save
	unlet s:cpo_save

	" vim: set sw=4 sts=4 et tw=80 :