| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___FORMAT_FORMAT_ARGS_H |
| #define _LIBCPP___FORMAT_FORMAT_ARGS_H |
| |
| #include <__availability> |
| #include <__config> |
| #include <__format/format_fwd.h> |
| #include <cstddef> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER > 17 |
| |
| template <class _Context> |
| class _LIBCPP_TEMPLATE_VIS _LIBCPP_AVAILABILITY_FORMAT basic_format_args { |
| public: |
| // TODO FMT Implement [format.args]/5 |
| // [Note 1: Implementations are encouraged to optimize the representation of |
| // basic_format_args for small number of formatting arguments by storing |
| // indices of type alternatives separately from values and packing the |
| // former. - end note] |
| // Note: Change __format_arg_store to use a built-in array. |
| _LIBCPP_HIDE_FROM_ABI basic_format_args() noexcept = default; |
| |
| template <class... _Args> |
| _LIBCPP_HIDE_FROM_ABI basic_format_args( |
| const __format_arg_store<_Context, _Args...>& __store) noexcept |
| : __size_(sizeof...(_Args)), __data_(__store.__args.data()) {} |
| |
| _LIBCPP_HIDE_FROM_ABI |
| basic_format_arg<_Context> get(size_t __id) const noexcept { |
| return __id < __size_ ? __data_[__id] : basic_format_arg<_Context>{}; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI size_t __size() const noexcept { return __size_; } |
| |
| private: |
| size_t __size_{0}; |
| const basic_format_arg<_Context>* __data_{nullptr}; |
| }; |
| |
| #endif //_LIBCPP_STD_VER > 17 |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___FORMAT_FORMAT_ARGS_H |