# File lib/ruby_lsp/requests/on_type_formatting.rb, line 49
def initialize(document, position, trigger_character, client_name)
  super()
  @document = document
  @lines = T.let(@document.source.lines, T::Array[String])
  line = @lines[[position[:line] - 1, 0].max]

  @indentation = T.let(line ? find_indentation(line) : 0, Integer)
  @previous_line = T.let(line ? line.strip.chomp : "", String)
  @position = position
  @edits = T.let([], T::Array[Interface::TextEdit])
  @trigger_character = trigger_character
  @client_name = client_name
end

# File lib/ruby_lsp/requests/on_type_formatting.rb, line 25
def provider
  Interface::DocumentOnTypeFormattingOptions.new(
    first_trigger_character: "{",
    more_trigger_character: ["\n", "|", "d"],
  )
end

# File lib/ruby_lsp/requests/on_type_formatting.rb, line 64
def perform
  case @trigger_character
  when "{"
    handle_curly_brace if @document.syntax_error?
  when "|"
    handle_pipe if @document.syntax_error?
  when "\n"
    if (comment_match = @previous_line.match(/^#(\s*)/))
      handle_comment_line(T.must(comment_match[1]))
    elsif @document.syntax_error?
      match = /(?<=<<(-|~))(?<quote>['"`]?)(?<delimiter>\w+)\k<quote>/.match(@previous_line)
      heredoc_delimiter = match && match.named_captures["delimiter"]

      if heredoc_delimiter
        handle_heredoc_end(heredoc_delimiter)
      else
        handle_statement_end
      end
    end
  when "d"
    auto_indent_after_end_keyword
  end

  @edits
end