class Rufo::Formatter

def visit_hash(node)
  # [:hash, elements]
  _, elements = node
  token_column = current_token_column
  closing_brace_token, _ = find_closing_brace_token
  need_space = need_space_for_hash?(node, node[1], closing_brace_token)
  check :on_lbrace
  write "{"
  brace_position = @output.length - 1
  write " " if need_space
  next_token
  if elements
    # [:assoclist_from_args, elements]
    push_hash(node) do
      visit_literal_elements(elements[1], inside_hash: true, token_column: token_column)
    end
    char_after_brace = @output[brace_position + 1]
    # Check that need_space is set correctly.
    if !need_space && !["\n", " "].include?(char_after_brace)
      need_space = true
      # Add a space in the missing position.
      @output.insert(brace_position + 1, " ")
    end
  else
    skip_space_or_newline
  end
  check :on_rbrace
  write " " if need_space
  write "}"
  next_token
end