format

// -*- 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
#define _LIBCPP_FORMAT

/*

namespace std {
  // [format.context], class template basic_format_context
  template<class Out, class charT> class basic_format_context;
  using format_context = basic_format_context<unspecified, char>;
  using wformat_context = basic_format_context<unspecified, wchar_t>;

  // [format.args], class template basic_format_args
  template<class Context> class basic_format_args;
  using format_args = basic_format_args<format_context>;
  using wformat_args = basic_format_args<wformat_context>;

  // [format.fmt.string], class template basic_format_string
  template<class charT, class... Args>
    struct basic_format_string {                                // since C++23, exposition only before C++23
    private:
      basic_string_view<charT> str;                             // exposition only

    public:
      template<class T> consteval basic_format_string(const T& s);
      basic_format_string(runtime-format-string<charT> s) noexcept : str(s.str) {}   // since C++26

      constexpr basic_string_view<charT> get() const noexcept { return str; }
    };
  template<class... Args>
    using format_string =                                       // since C++23, exposition only before C++23
      basic_format_string<char, type_identity_t<Args>...>;
  template<class... Args>
    using wformat_string =                                      // since C++23, exposition only before C++23
      basic_format_string<wchar_t, type_identity_t<Args>...>;

  template<class charT> struct runtime-format-string {          // since C++26, exposition-only
  private:
    basic_string_view<charT> str;                               // exposition-only

  public:
    runtime-format-string(basic_string_view<charT> s) noexcept : str(s) {}

    runtime-format-string(const runtime-format-string&) = delete;
    runtime-format-string& operator=(const runtime-format-string&) = delete;
  };

  runtime-format-string<char> runtime_format(string_view fmt) noexcept {
    return fmt;
  }
  runtime-format-string<wchar_t> runtime_format(wstring_view fmt) noexcept {
    return fmt;
  }

  // [format.functions], formatting functions
  template<class... Args>
    string format(format-string<Args...> fmt, Args&&... args);
  template<class... Args>
    wstring format(wformat-string<Args...> fmt, Args&&... args);
  template<class... Args>
    string format(const locale& loc, format-string<Args...> fmt, Args&&... args);
  template<class... Args>
    wstring format(const locale& loc, wformat-string<Args...> fmt, Args&&... args);

  string vformat(string_view fmt, format_args args);
  wstring vformat(wstring_view fmt, wformat_args args);
  string vformat(const locale& loc, string_view fmt, format_args args);
  wstring vformat(const locale& loc, wstring_view fmt, wformat_args args);

  template<class Out, class... Args>
    Out format_to(Out out, format-string<Args...> fmt, Args&&... args);
  template<class Out, class... Args>
    Out format_to(Out out, wformat-string<Args...> fmt, Args&&... args);
  template<class Out, class... Args>
    Out format_to(Out out, const locale& loc, format-string<Args...> fmt, Args&&... args);
  template<class Out, class... Args>
    Out format_to(Out out, const locale& loc, wformat-string<Args...> fmt, Args&&... args);

  template<class Out>
    Out vformat_to(Out out, string_view fmt, format_args args);
  template<class Out>
    Out vformat_to(Out out, wstring_view fmt, wformat_args args);
  template<class Out>
    Out vformat_to(Out out, const locale& loc, string_view fmt,
                   format_args char> args);
  template<class Out>
    Out vformat_to(Out out, const locale& loc, wstring_view fmt,
                   wformat_args args);

  template<class Out> struct format_to_n_result {
    Out out;
    iter_difference_t<Out> size;
  };
  template<class Out, class... Args>
    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
                                        format-string<Args...> fmt, Args&&... args);
  template<class Out, class... Args>
    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
                                        wformat-string<Args...> fmt, Args&&... args);
  template<class Out, class... Args>
    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
                                        const locale& loc, format-string<Args...> fmt,
                                        Args&&... args);
  template<class Out, class... Args>
    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
                                        const locale& loc, wformat-string<Args...> fmt,
                                        Args&&... args);

  template<class... Args>
    size_t formatted_size(format-string<Args...> fmt, Args&&... args);
  template<class... Args>
    size_t formatted_size(wformat-string<Args...> fmt, Args&&... args);
  template<class... Args>
    size_t formatted_size(const locale& loc, format-string<Args...> fmt, Args&&... args);
  template<class... Args>
    size_t formatted_size(const locale& loc, wformat-string<Args...> fmt, Args&&... args);

  // [format.formatter], formatter
  template<class T, class charT = char> struct formatter;

  template<class T>
  constexpr bool enable_nonlocking_formatter_optimization = false;   // since C++23

  // [format.parse.ctx], class template basic_format_parse_context
  template<class charT> class basic_format_parse_context;
  using format_parse_context = basic_format_parse_context<char>;
  using wformat_parse_context = basic_format_parse_context<wchar_t>;

  // [format.range], formatting of ranges
  // [format.range.fmtkind], variable template format_kind
  enum class range_format {                                          // since C++23
    disabled,
    map,
    set,
    sequence,
    string,
    debug_string
  };

  template<class R>
    constexpr unspecified format_kind = unspecified;                 // since C++23

  template<ranges::input_range R>
      requires same_as<R, remove_cvref_t<R>>
    constexpr range_format format_kind<R> = see below;               // since C++23

  // [format.range.formatter], class template range_formatter
  template<class T, class charT = char>
    requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
  class range_formatter;                                             // since C++23

  // [format.range.fmtdef], class template range-default-formatter
  template<range_format K, ranges::input_range R, class charT>
    struct range-default-formatter;                                  // exposition only, since C++23

  // [format.range.fmtmap], [format.range.fmtset], [format.range.fmtstr],
  // specializations for maps, sets, and strings
  template<ranges::input_range R, class charT>
    requires (format_kind<R> != range_format::disabled) &&
             formattable<ranges::range_reference_t<R>, charT>
  struct formatter<R, charT> : range-default-formatter<format_kind<R>, R, charT> { }; // since C++23

  // [format.arguments], arguments
  // [format.arg], class template basic_format_arg
  template<class Context> class basic_format_arg;

  template<class Visitor, class Context>
    see below visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg); // Deprecated in C++26

  // [format.arg.store], class template format-arg-store
  template<class Context, class... Args> struct format-arg-store;    // exposition only

  template<class Context = format_context, class... Args>
    format-arg-store<Context, Args...>
      make_format_args(Args&... args);
  template<class... Args>
    format-arg-store<wformat_context, Args...>
      make_wformat_args(Args&... args);

  // [format.error], class format_error
  class format_error;
}

*/

#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#  include <__cxx03/format>
#else
#  include <__config>

#  if _LIBCPP_STD_VER >= 20
#    include <__format/buffer.h>
#    include <__format/concepts.h>
#    include <__format/container_adaptor.h>
#    include <__format/enable_insertable.h>
#    include <__format/escaped_output_table.h>
#    include <__format/extended_grapheme_cluster_table.h>
#    include <__format/format_arg.h>
#    include <__format/format_arg_store.h>
#    include <__format/format_args.h>
#    include <__format/format_context.h>
#    include <__format/format_error.h>
#    include <__format/format_functions.h>
#    include <__format/format_parse_context.h>
#    include <__format/format_string.h>
#    include <__format/format_to_n_result.h>
#    include <__format/formatter.h>
#    include <__format/formatter_bool.h>
#    include <__format/formatter_char.h>
#    include <__format/formatter_floating_point.h>
#    include <__format/formatter_integer.h>
#    include <__format/formatter_pointer.h>
#    include <__format/formatter_string.h>
#    include <__format/formatter_tuple.h>
#    include <__format/parser_std_format_spec.h>
#    include <__format/range_default_formatter.h>
#    include <__format/range_formatter.h>
#    include <__format/unicode.h>
#    include <__fwd/format.h>
#  endif

#  include <version>

#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#    pragma GCC system_header
#  endif

#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
#    include <array>
#    include <cctype>
#    include <cerrno>
#    include <clocale>
#    include <cmath>
#    include <cstddef>
#    include <cstdint>
#    include <cstdlib>
#    include <cstring>
#    include <initializer_list>
#    include <limits>
#    include <locale>
#    include <new>
#    include <optional>
#    include <queue>
#    include <stack>
#    include <stdexcept>
#    include <string>
#    include <string_view>
#    include <tuple>

#    if _LIBCPP_HAS_WIDE_CHARACTERS
#      include <cwchar>
#    endif
#  endif
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_FORMAT