SyntaxSuggest::AroundBlockScan#scan_while

# File tmp/rubies/ruby-3.2.0/lib/syntax_suggest/around_block_scan.rb, line 62
def scan_while
  stop_next = false

  kw_count = 0
  end_count = 0
  index = before_lines.reverse_each.take_while do |line|
    next false if stop_next
    next true if @skip_hidden && line.hidden?
    next true if @skip_empty && line.empty?

    kw_count += 1 if line.is_kw?
    end_count += 1 if line.is_end?
    if @stop_after_kw && kw_count > end_count
      stop_next = true
    end

    yield line
  end.last&.index

  if index && index < before_index
    @before_index = index
  end

  stop_next = false
  kw_count = 0
  end_count = 0
  index = after_lines.take_while do |line|
    next false if stop_next
    next true if @skip_hidden && line.hidden?
    next true if @skip_empty && line.empty?

    kw_count += 1 if line.is_kw?
    end_count += 1 if line.is_end?
    if @stop_after_kw && end_count > kw_count
      stop_next = true
    end

    yield line
  end.last&.index

  if index && index > after_index
    @after_index = index
  end
  self
end