| // -*- C++ -*- |
| //===--------------------------- format -----------------------------------===// |
| // |
| // 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 |
| #define _LIBCPP_FORMAT |
| |
| /* |
| |
| namespace std { |
| // [format.error], class format_error |
| class format_error : public runtime_error { |
| public: |
| explicit format_error(const string& what_arg); |
| explicit format_error(const char* what_arg); |
| }; |
| |
| // [format.parse.ctx], class template basic_format_parse_context |
| template<class charT> |
| class basic_format_parse_context { |
| public: |
| using char_type = charT; |
| using const_iterator = typename basic_string_view<charT>::const_iterator; |
| using iterator = const_iterator; |
| |
| private: |
| iterator begin_; // exposition only |
| iterator end_; // exposition only |
| enum indexing { unknown, manual, automatic }; // exposition only |
| indexing indexing_; // exposition only |
| size_t next_arg_id_; // exposition only |
| size_t num_args_; // exposition only |
| |
| public: |
| constexpr explicit basic_format_parse_context(basic_string_view<charT> fmt, |
| size_t num_args = 0) noexcept; |
| basic_format_parse_context(const basic_format_parse_context&) = delete; |
| basic_format_parse_context& operator=(const basic_format_parse_context&) = delete; |
| |
| constexpr const_iterator begin() const noexcept; |
| constexpr const_iterator end() const noexcept; |
| constexpr void advance_to(const_iterator it); |
| |
| constexpr size_t next_arg_id(); |
| constexpr void check_arg_id(size_t id); |
| }; |
| using format_parse_context = basic_format_parse_context<char>; |
| using wformat_parse_context = basic_format_parse_context<wchar_t>; |
| } |
| |
| */ |
| |
| // Make sure all feature tests macros are always available. |
| #include <version> |
| // Only enable the contents of the header when libc++ was build with LIBCXX_ENABLE_INCOMPLETE_FEATURES enabled |
| #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) |
| |
| #include <__config> |
| #include <__format/format_error.h> |
| #include <__format/format_parse_context.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER > 17 |
| |
| #endif //_LIBCPP_STD_VER > 17 |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| _LIBCPP_POP_MACROS |
| |
| #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) |
| |
| #endif // _LIBCPP_FORMAT |