# File lib/parser/builders/default.rb, line 774
    def block(method_call, begin_t, args, body, end_t)
      _receiver, _selector, *call_args = *method_call

      if method_call.type == :yield
        diagnostic :error, :block_given_to_yield, nil, method_call.loc.keyword, [loc(begin_t)]
      end

      last_arg = call_args.last
      if last_arg && last_arg.type == :block_pass
        diagnostic :error, :block_and_blockarg, nil, last_arg.loc.expression, [loc(begin_t)]
      end

      if [:send, :csend, :super, :zsuper, :lambda].include?(method_call.type)
        n(:block, [ method_call, args, body ],
          block_map(method_call.loc.expression, begin_t, end_t))
      else
        # Code like "return foo 1 do end" is reduced in a weird sequence.
        # Here, method_call is actually (return).
        actual_send, = *method_call
        block =
          n(:block, [ actual_send, args, body ],
            block_map(actual_send.loc.expression, begin_t, end_t))

        n(method_call.type, [ block ],
          method_call.loc.with_expression(join_exprs(method_call, block)))
      end
    end