1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___FORMAT_FORMATTER_H 11#define _LIBCPP___FORMAT_FORMATTER_H 12 13#include <__availability> 14#include <__config> 15#include <__format/format_fwd.h> 16 17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18# pragma GCC system_header 19#endif 20 21_LIBCPP_BEGIN_NAMESPACE_STD 22 23#if _LIBCPP_STD_VER >= 20 24 25/// The default formatter template. 26/// 27/// [format.formatter.spec]/5 28/// If F is a disabled specialization of formatter, these values are false: 29/// - is_default_constructible_v<F>, 30/// - is_copy_constructible_v<F>, 31/// - is_move_constructible_v<F>, 32/// - is_copy_assignable<F>, and 33/// - is_move_assignable<F>. 34template <class _Tp, class _CharT> 35struct _LIBCPP_TEMPLATE_VIS formatter { 36 formatter() = delete; 37 formatter(const formatter&) = delete; 38 formatter& operator=(const formatter&) = delete; 39}; 40 41# if _LIBCPP_STD_VER >= 23 42 43template <class _Tp> 44_LIBCPP_HIDE_FROM_ABI constexpr void __set_debug_format(_Tp& __formatter) { 45 if constexpr (requires { __formatter.set_debug_format(); }) 46 __formatter.set_debug_format(); 47} 48 49# endif // _LIBCPP_STD_VER >= 23 50#endif // _LIBCPP_STD_VER >= 20 51 52_LIBCPP_END_NAMESPACE_STD 53 54#endif // _LIBCPP___FORMAT_FORMATTER_H 55