llvm-project

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// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_IOS
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#define _LIBCPP_IOS
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/*
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    ios synopsis
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#include <iosfwd>
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namespace std
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{
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typedef OFF_T streamoff;
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typedef SZ_T streamsize;
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template <class stateT> class fpos;
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class ios_base
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{
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public:
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    class failure;
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    typedef T1 fmtflags;
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    static constexpr fmtflags boolalpha;
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    static constexpr fmtflags dec;
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    static constexpr fmtflags fixed;
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    static constexpr fmtflags hex;
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    static constexpr fmtflags internal;
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    static constexpr fmtflags left;
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    static constexpr fmtflags oct;
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    static constexpr fmtflags right;
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    static constexpr fmtflags scientific;
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    static constexpr fmtflags showbase;
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    static constexpr fmtflags showpoint;
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    static constexpr fmtflags showpos;
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    static constexpr fmtflags skipws;
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    static constexpr fmtflags unitbuf;
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    static constexpr fmtflags uppercase;
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    static constexpr fmtflags adjustfield;
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    static constexpr fmtflags basefield;
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    static constexpr fmtflags floatfield;
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    typedef T2 iostate;
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    static constexpr iostate badbit;
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    static constexpr iostate eofbit;
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    static constexpr iostate failbit;
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    static constexpr iostate goodbit;
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    typedef T3 openmode;
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    static constexpr openmode app;
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    static constexpr openmode ate;
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    static constexpr openmode binary;
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    static constexpr openmode in;
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    static constexpr openmode noreplace; // since C++23
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    static constexpr openmode out;
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    static constexpr openmode trunc;
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    typedef T4 seekdir;
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    static constexpr seekdir beg;
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    static constexpr seekdir cur;
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    static constexpr seekdir end;
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    class Init;
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    // 27.5.2.2 fmtflags state:
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    fmtflags flags() const;
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    fmtflags flags(fmtflags fmtfl);
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    fmtflags setf(fmtflags fmtfl);
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    fmtflags setf(fmtflags fmtfl, fmtflags mask);
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    void unsetf(fmtflags mask);
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    streamsize precision() const;
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    streamsize precision(streamsize prec);
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    streamsize width() const;
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    streamsize width(streamsize wide);
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    // 27.5.2.3 locales:
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    locale imbue(const locale& loc);
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    locale getloc() const;
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    // 27.5.2.5 storage:
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    static int xalloc();
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    long& iword(int index);
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    void*& pword(int index);
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    // destructor
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    virtual ~ios_base();
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    // 27.5.2.6 callbacks;
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    enum event { erase_event, imbue_event, copyfmt_event };
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    typedef void (*event_callback)(event, ios_base&, int index);
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    void register_callback(event_callback fn, int index);
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    ios_base(const ios_base&) = delete;
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    ios_base& operator=(const ios_base&) = delete;
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    static bool sync_with_stdio(bool sync = true);
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protected:
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    ios_base();
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};
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template <class charT, class traits = char_traits<charT> >
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class basic_ios
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    : public ios_base
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{
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public:
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    // types:
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    typedef charT char_type;
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    typedef typename traits::int_type int_type;  // removed in C++17
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    typedef typename traits::pos_type pos_type;  // removed in C++17
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    typedef typename traits::off_type off_type;  // removed in C++17
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    typedef traits traits_type;
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    operator unspecified-bool-type() const;
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    bool operator!() const;
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    iostate rdstate() const;
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    void clear(iostate state = goodbit);
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    void setstate(iostate state);
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    bool good() const;
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    bool eof() const;
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    bool fail() const;
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    bool bad() const;
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    iostate exceptions() const;
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    void exceptions(iostate except);
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    // 27.5.4.1 Constructor/destructor:
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    explicit basic_ios(basic_streambuf<charT,traits>* sb);
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    virtual ~basic_ios();
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    // 27.5.4.2 Members:
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    basic_ostream<charT,traits>* tie() const;
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    basic_ostream<charT,traits>* tie(basic_ostream<charT,traits>* tiestr);
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    basic_streambuf<charT,traits>* rdbuf() const;
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    basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);
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    basic_ios& copyfmt(const basic_ios& rhs);
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    char_type fill() const;
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    char_type fill(char_type ch);
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    locale imbue(const locale& loc);
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    char narrow(char_type c, char dfault) const;
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    char_type widen(char c) const;
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    basic_ios(const basic_ios& ) = delete;
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    basic_ios& operator=(const basic_ios&) = delete;
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protected:
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    basic_ios();
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    void init(basic_streambuf<charT,traits>* sb);
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    void move(basic_ios& rhs);
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    void swap(basic_ios& rhs) noexcept;
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    void set_rdbuf(basic_streambuf<charT, traits>* sb);
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};
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// 27.5.5, manipulators:
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ios_base& boolalpha (ios_base& str);
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ios_base& noboolalpha(ios_base& str);
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ios_base& showbase (ios_base& str);
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ios_base& noshowbase (ios_base& str);
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ios_base& showpoint (ios_base& str);
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ios_base& noshowpoint(ios_base& str);
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ios_base& showpos (ios_base& str);
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ios_base& noshowpos (ios_base& str);
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ios_base& skipws (ios_base& str);
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ios_base& noskipws (ios_base& str);
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ios_base& uppercase (ios_base& str);
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ios_base& nouppercase(ios_base& str);
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ios_base& unitbuf (ios_base& str);
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ios_base& nounitbuf (ios_base& str);
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// 27.5.5.2 adjustfield:
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ios_base& internal (ios_base& str);
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ios_base& left (ios_base& str);
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ios_base& right (ios_base& str);
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// 27.5.5.3 basefield:
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ios_base& dec (ios_base& str);
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ios_base& hex (ios_base& str);
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ios_base& oct (ios_base& str);
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// 27.5.5.4 floatfield:
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ios_base& fixed (ios_base& str);
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ios_base& scientific (ios_base& str);
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ios_base& hexfloat (ios_base& str);
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ios_base& defaultfloat(ios_base& str);
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// 27.5.5.5 error reporting:
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enum class io_errc
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{
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    stream = 1
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};
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concept_map ErrorCodeEnum<io_errc> { };
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error_code make_error_code(io_errc e) noexcept;
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error_condition make_error_condition(io_errc e) noexcept;
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storage-class-specifier const error_category& iostream_category() noexcept;
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}  // std
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*/
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#include <__config>
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#if defined(_LIBCPP_HAS_NO_LOCALIZATION)
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#  error "The iostreams library is not supported since libc++ has been configured without support for localization."
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#endif
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#include <__fwd/ios.h>
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#include <__ios/fpos.h>
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#include <__locale>
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#include <__system_error/error_category.h>
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#include <__system_error/error_code.h>
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#include <__system_error/error_condition.h>
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#include <__system_error/system_error.h>
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#include <__utility/swap.h>
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#include <__verbose_abort>
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#include <version>
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// standard-mandated includes
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// [ios.syn]
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#include <iosfwd>
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#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
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#  include <__atomic/atomic.h> // for __xindex_
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#endif
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#  pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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typedef ptrdiff_t streamsize;
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class _LIBCPP_EXPORTED_FROM_ABI ios_base {
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public:
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  class _LIBCPP_EXPORTED_FROM_ABI failure;
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  typedef unsigned int fmtflags;
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  static const fmtflags boolalpha   = 0x0001;
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  static const fmtflags dec         = 0x0002;
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  static const fmtflags fixed       = 0x0004;
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  static const fmtflags hex         = 0x0008;
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  static const fmtflags internal    = 0x0010;
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  static const fmtflags left        = 0x0020;
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  static const fmtflags oct         = 0x0040;
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  static const fmtflags right       = 0x0080;
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  static const fmtflags scientific  = 0x0100;
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  static const fmtflags showbase    = 0x0200;
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  static const fmtflags showpoint   = 0x0400;
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  static const fmtflags showpos     = 0x0800;
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  static const fmtflags skipws      = 0x1000;
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  static const fmtflags unitbuf     = 0x2000;
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  static const fmtflags uppercase   = 0x4000;
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  static const fmtflags adjustfield = left | right | internal;
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  static const fmtflags basefield   = dec | oct | hex;
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  static const fmtflags floatfield  = scientific | fixed;
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  typedef unsigned int iostate;
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  static const iostate badbit  = 0x1;
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  static const iostate eofbit  = 0x2;
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  static const iostate failbit = 0x4;
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  static const iostate goodbit = 0x0;
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  typedef unsigned int openmode;
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  static const openmode app    = 0x01;
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  static const openmode ate    = 0x02;
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  static const openmode binary = 0x04;
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  static const openmode in     = 0x08;
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  static const openmode out    = 0x10;
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  static const openmode trunc  = 0x20;
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#if _LIBCPP_STD_VER >= 23
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  static const openmode noreplace = 0x40;
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#endif
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  enum seekdir { beg, cur, end };
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#if _LIBCPP_STD_VER <= 14
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  typedef iostate io_state;
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  typedef openmode open_mode;
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  typedef seekdir seek_dir;
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  typedef std::streamoff streamoff;
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  typedef std::streampos streampos;
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#endif
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  class _LIBCPP_EXPORTED_FROM_ABI Init;
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  // 27.5.2.2 fmtflags state:
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  _LIBCPP_HIDE_FROM_ABI fmtflags flags() const;
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  _LIBCPP_HIDE_FROM_ABI fmtflags flags(fmtflags __fmtfl);
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  _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl);
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  _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
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  _LIBCPP_HIDE_FROM_ABI void unsetf(fmtflags __mask);
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  _LIBCPP_HIDE_FROM_ABI streamsize precision() const;
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  _LIBCPP_HIDE_FROM_ABI streamsize precision(streamsize __prec);
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  _LIBCPP_HIDE_FROM_ABI streamsize width() const;
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  _LIBCPP_HIDE_FROM_ABI streamsize width(streamsize __wide);
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  // 27.5.2.3 locales:
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  locale imbue(const locale& __loc);
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  locale getloc() const;
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  // 27.5.2.5 storage:
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  static int xalloc();
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  long& iword(int __index);
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  void*& pword(int __index);
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  // destructor
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  virtual ~ios_base();
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  // 27.5.2.6 callbacks;
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  enum event { erase_event, imbue_event, copyfmt_event };
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  typedef void (*event_callback)(event, ios_base&, int __index);
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  void register_callback(event_callback __fn, int __index);
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  ios_base(const ios_base&)            = delete;
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  ios_base& operator=(const ios_base&) = delete;
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  static bool sync_with_stdio(bool __sync = true);
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  _LIBCPP_HIDE_FROM_ABI iostate rdstate() const;
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  void clear(iostate __state = goodbit);
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  _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state);
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  _LIBCPP_HIDE_FROM_ABI bool good() const;
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  _LIBCPP_HIDE_FROM_ABI bool eof() const;
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  _LIBCPP_HIDE_FROM_ABI bool fail() const;
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  _LIBCPP_HIDE_FROM_ABI bool bad() const;
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  _LIBCPP_HIDE_FROM_ABI iostate exceptions() const;
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  _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate);
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  void __set_badbit_and_consider_rethrow();
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  void __set_failbit_and_consider_rethrow();
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  _LIBCPP_HIDE_FROM_ABI void __setstate_nothrow(iostate __state) {
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    if (__rdbuf_)
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      __rdstate_ |= __state;
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    else
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      __rdstate_ |= __state | ios_base::badbit;
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  }
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protected:
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  _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(nullptr) {
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    // Purposefully does no initialization
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    //
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    // Except for the locale, this is a sentinel to avoid destroying
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    // an uninitialized object. See
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    // test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp
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    // for the details.
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  }
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  void init(void* __sb);
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  _LIBCPP_HIDE_FROM_ABI void* rdbuf() const { return __rdbuf_; }
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  _LIBCPP_HIDE_FROM_ABI void rdbuf(void* __sb) {
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    __rdbuf_ = __sb;
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    clear();
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  }
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  void __call_callbacks(event);
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  void copyfmt(const ios_base&);
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  void move(ios_base&);
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  void swap(ios_base&) _NOEXCEPT;
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  _LIBCPP_HIDE_FROM_ABI void set_rdbuf(void* __sb) { __rdbuf_ = __sb; }
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private:
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  // All data members must be scalars
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  fmtflags __fmtflags_;
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  streamsize __precision_;
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  streamsize __width_;
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  iostate __rdstate_;
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  iostate __exceptions_;
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  void* __rdbuf_;
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  void* __loc_;
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  event_callback* __fn_;
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  int* __index_;
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  size_t __event_size_;
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  size_t __event_cap_;
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// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
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// enabled with clang.
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#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
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  static atomic<int> __xindex_;
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#else
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  static int __xindex_;
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#endif
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  long* __iarray_;
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  size_t __iarray_size_;
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  size_t __iarray_cap_;
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  void** __parray_;
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  size_t __parray_size_;
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  size_t __parray_cap_;
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};
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// enum class io_errc
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_LIBCPP_DECLARE_STRONG_ENUM(io_errc){stream = 1};
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_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
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template <>
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struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc> : public true_type {};
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#ifdef _LIBCPP_CXX03_LANG
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template <>
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struct _LIBCPP_TEMPLATE_VIS is_error_code_enum<io_errc::__lx> : public true_type {};
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#endif
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_LIBCPP_EXPORTED_FROM_ABI const error_category& iostream_category() _NOEXCEPT;
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inline _LIBCPP_HIDE_FROM_ABI error_code make_error_code(io_errc __e) _NOEXCEPT {
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  return error_code(static_cast<int>(__e), iostream_category());
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}
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inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(io_errc __e) _NOEXCEPT {
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  return error_condition(static_cast<int>(__e), iostream_category());
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}
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class _LIBCPP_EXPORTED_FROM_ABI ios_base::failure : public system_error {
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public:
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  explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
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  explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
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  _LIBCPP_HIDE_FROM_ABI failure(const failure&) _NOEXCEPT = default;
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  ~failure() _NOEXCEPT override;
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};
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_LIBCPP_NORETURN inline _LIBCPP_HIDE_FROM_ABI void __throw_failure(char const* __msg) {
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#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
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  throw ios_base::failure(__msg);
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#else
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  _LIBCPP_VERBOSE_ABORT("ios_base::failure was thrown in -fno-exceptions mode with message \"%s\"", __msg);
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#endif
450
}
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class _LIBCPP_EXPORTED_FROM_ABI ios_base::Init {
453
public:
454
  Init();
455
  ~Init();
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};
457

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// fmtflags
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inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags() const { return __fmtflags_; }
461

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inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags(fmtflags __fmtfl) {
463
  fmtflags __r = __fmtflags_;
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  __fmtflags_  = __fmtfl;
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  return __r;
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}
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inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl) {
469
  fmtflags __r = __fmtflags_;
470
  __fmtflags_ |= __fmtfl;
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  return __r;
472
}
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inline _LIBCPP_HIDE_FROM_ABI void ios_base::unsetf(fmtflags __mask) { __fmtflags_ &= ~__mask; }
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inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl, fmtflags __mask) {
477
  fmtflags __r = __fmtflags_;
478
  unsetf(__mask);
479
  __fmtflags_ |= __fmtfl & __mask;
480
  return __r;
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}
482

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// precision
484

485
inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision() const { return __precision_; }
486

487
inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision(streamsize __prec) {
488
  streamsize __r = __precision_;
489
  __precision_   = __prec;
490
  return __r;
491
}
492

493
// width
494

495
inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width() const { return __width_; }
496

497
inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width(streamsize __wide) {
498
  streamsize __r = __width_;
499
  __width_       = __wide;
500
  return __r;
501
}
502

503
// iostate
504

505
inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::rdstate() const { return __rdstate_; }
506

507
inline _LIBCPP_HIDE_FROM_ABI void ios_base::setstate(iostate __state) { clear(__rdstate_ | __state); }
508

509
inline _LIBCPP_HIDE_FROM_ABI bool ios_base::good() const { return __rdstate_ == 0; }
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inline _LIBCPP_HIDE_FROM_ABI bool ios_base::eof() const { return (__rdstate_ & eofbit) != 0; }
512

513
inline _LIBCPP_HIDE_FROM_ABI bool ios_base::fail() const { return (__rdstate_ & (failbit | badbit)) != 0; }
514

515
inline _LIBCPP_HIDE_FROM_ABI bool ios_base::bad() const { return (__rdstate_ & badbit) != 0; }
516

517
inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::exceptions() const { return __exceptions_; }
518

519
inline _LIBCPP_HIDE_FROM_ABI void ios_base::exceptions(iostate __iostate) {
520
  __exceptions_ = __iostate;
521
  clear(__rdstate_);
522
}
523

524
template <class _CharT, class _Traits>
525
class _LIBCPP_TEMPLATE_VIS basic_ios : public ios_base {
526
public:
527
  // types:
528
  typedef _CharT char_type;
529
  typedef _Traits traits_type;
530

531
  typedef typename traits_type::int_type int_type;
532
  typedef typename traits_type::pos_type pos_type;
533
  typedef typename traits_type::off_type off_type;
534

535
  static_assert(is_same<_CharT, typename traits_type::char_type>::value,
536
                "traits_type::char_type must be the same type as CharT");
537

538
#ifdef _LIBCPP_CXX03_LANG
539
  // Preserve the ability to compare with literal 0,
540
  // and implicitly convert to bool, but not implicitly convert to int.
541
  _LIBCPP_HIDE_FROM_ABI operator void*() const { return fail() ? nullptr : (void*)this; }
542
#else
543
  _LIBCPP_HIDE_FROM_ABI explicit operator bool() const { return !fail(); }
544
#endif
545

546
  _LIBCPP_HIDE_FROM_ABI bool operator!() const { return fail(); }
547
  _LIBCPP_HIDE_FROM_ABI iostate rdstate() const { return ios_base::rdstate(); }
548
  _LIBCPP_HIDE_FROM_ABI void clear(iostate __state = goodbit) { ios_base::clear(__state); }
549
  _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state) { ios_base::setstate(__state); }
550
  _LIBCPP_HIDE_FROM_ABI bool good() const { return ios_base::good(); }
551
  _LIBCPP_HIDE_FROM_ABI bool eof() const { return ios_base::eof(); }
552
  _LIBCPP_HIDE_FROM_ABI bool fail() const { return ios_base::fail(); }
553
  _LIBCPP_HIDE_FROM_ABI bool bad() const { return ios_base::bad(); }
554

555
  _LIBCPP_HIDE_FROM_ABI iostate exceptions() const { return ios_base::exceptions(); }
556
  _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate) { ios_base::exceptions(__iostate); }
557

558
  // 27.5.4.1 Constructor/destructor:
559
  _LIBCPP_HIDE_FROM_ABI explicit basic_ios(basic_streambuf<char_type, traits_type>* __sb);
560
  ~basic_ios() override;
561

562
  // 27.5.4.2 Members:
563
  _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie() const;
564
  _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
565

566
  _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf() const;
567
  _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
568

569
  basic_ios& copyfmt(const basic_ios& __rhs);
570

571
  _LIBCPP_HIDE_FROM_ABI char_type fill() const;
572
  _LIBCPP_HIDE_FROM_ABI char_type fill(char_type __ch);
573

574
  _LIBCPP_HIDE_FROM_ABI locale imbue(const locale& __loc);
575

576
  _LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const;
577
  _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const;
578

579
protected:
580
  _LIBCPP_HIDE_FROM_ABI basic_ios() {
581
    // purposefully does no initialization
582
    // since the destructor does nothing this does not have ios_base issues.
583
  }
584
  _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb);
585

586
  _LIBCPP_HIDE_FROM_ABI void move(basic_ios& __rhs);
587
  _LIBCPP_HIDE_FROM_ABI void move(basic_ios&& __rhs) { move(__rhs); }
588
  _LIBCPP_HIDE_FROM_ABI void swap(basic_ios& __rhs) _NOEXCEPT;
589
  _LIBCPP_HIDE_FROM_ABI void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
590

591
private:
592
  basic_ostream<char_type, traits_type>* __tie_;
593
  mutable int_type __fill_;
594
};
595

596
template <class _CharT, class _Traits>
597
inline _LIBCPP_HIDE_FROM_ABI basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type, traits_type>* __sb) {
598
  init(__sb);
599
}
600

601
template <class _CharT, class _Traits>
602
basic_ios<_CharT, _Traits>::~basic_ios() {}
603

604
template <class _CharT, class _Traits>
605
inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) {
606
  ios_base::init(__sb);
607
  __tie_  = nullptr;
608
  __fill_ = traits_type::eof();
609
}
610

611
template <class _CharT, class _Traits>
612
inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* basic_ios<_CharT, _Traits>::tie() const {
613
  return __tie_;
614
}
615

616
template <class _CharT, class _Traits>
617
inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>*
618
basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) {
619
  basic_ostream<char_type, traits_type>* __r = __tie_;
620
  __tie_                                     = __tiestr;
621
  return __r;
622
}
623

624
template <class _CharT, class _Traits>
625
inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* basic_ios<_CharT, _Traits>::rdbuf() const {
626
  return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
627
}
628

629
template <class _CharT, class _Traits>
630
inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>*
631
basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
632
  basic_streambuf<char_type, traits_type>* __r = rdbuf();
633
  ios_base::rdbuf(__sb);
634
  return __r;
635
}
636

637
template <class _CharT, class _Traits>
638
inline _LIBCPP_HIDE_FROM_ABI locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) {
639
  locale __r = getloc();
640
  ios_base::imbue(__loc);
641
  if (rdbuf())
642
    rdbuf()->pubimbue(__loc);
643
  return __r;
644
}
645

646
template <class _CharT, class _Traits>
647
inline _LIBCPP_HIDE_FROM_ABI char basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const {
648
  return std::use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
649
}
650

651
template <class _CharT, class _Traits>
652
inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::widen(char __c) const {
653
  return std::use_facet<ctype<char_type> >(getloc()).widen(__c);
654
}
655

656
template <class _CharT, class _Traits>
657
inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill() const {
658
  if (traits_type::eq_int_type(traits_type::eof(), __fill_))
659
    __fill_ = widen(' ');
660
  return __fill_;
661
}
662

663
template <class _CharT, class _Traits>
664
inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill(char_type __ch) {
665
  if (traits_type::eq_int_type(traits_type::eof(), __fill_))
666
    __fill_ = widen(' ');
667
  char_type __r = __fill_;
668
  __fill_       = __ch;
669
  return __r;
670
}
671

672
template <class _CharT, class _Traits>
673
basic_ios<_CharT, _Traits>& basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) {
674
  if (this != &__rhs) {
675
    __call_callbacks(erase_event);
676
    ios_base::copyfmt(__rhs);
677
    __tie_  = __rhs.__tie_;
678
    __fill_ = __rhs.__fill_;
679
    __call_callbacks(copyfmt_event);
680
    exceptions(__rhs.exceptions());
681
  }
682
  return *this;
683
}
684

685
template <class _CharT, class _Traits>
686
inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) {
687
  ios_base::move(__rhs);
688
  __tie_       = __rhs.__tie_;
689
  __rhs.__tie_ = nullptr;
690
  __fill_      = __rhs.__fill_;
691
}
692

693
template <class _CharT, class _Traits>
694
inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT {
695
  ios_base::swap(__rhs);
696
  std::swap(__tie_, __rhs.__tie_);
697
  std::swap(__fill_, __rhs.__fill_);
698
}
699

700
template <class _CharT, class _Traits>
701
inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
702
  ios_base::set_rdbuf(__sb);
703
}
704

705
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>;
706

707
#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
708
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>;
709
#endif
710

711
_LIBCPP_HIDE_FROM_ABI inline ios_base& boolalpha(ios_base& __str) {
712
  __str.setf(ios_base::boolalpha);
713
  return __str;
714
}
715

716
_LIBCPP_HIDE_FROM_ABI inline ios_base& noboolalpha(ios_base& __str) {
717
  __str.unsetf(ios_base::boolalpha);
718
  return __str;
719
}
720

721
_LIBCPP_HIDE_FROM_ABI inline ios_base& showbase(ios_base& __str) {
722
  __str.setf(ios_base::showbase);
723
  return __str;
724
}
725

726
_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowbase(ios_base& __str) {
727
  __str.unsetf(ios_base::showbase);
728
  return __str;
729
}
730

731
_LIBCPP_HIDE_FROM_ABI inline ios_base& showpoint(ios_base& __str) {
732
  __str.setf(ios_base::showpoint);
733
  return __str;
734
}
735

736
_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpoint(ios_base& __str) {
737
  __str.unsetf(ios_base::showpoint);
738
  return __str;
739
}
740

741
_LIBCPP_HIDE_FROM_ABI inline ios_base& showpos(ios_base& __str) {
742
  __str.setf(ios_base::showpos);
743
  return __str;
744
}
745

746
_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpos(ios_base& __str) {
747
  __str.unsetf(ios_base::showpos);
748
  return __str;
749
}
750

751
_LIBCPP_HIDE_FROM_ABI inline ios_base& skipws(ios_base& __str) {
752
  __str.setf(ios_base::skipws);
753
  return __str;
754
}
755

756
_LIBCPP_HIDE_FROM_ABI inline ios_base& noskipws(ios_base& __str) {
757
  __str.unsetf(ios_base::skipws);
758
  return __str;
759
}
760

761
_LIBCPP_HIDE_FROM_ABI inline ios_base& uppercase(ios_base& __str) {
762
  __str.setf(ios_base::uppercase);
763
  return __str;
764
}
765

766
_LIBCPP_HIDE_FROM_ABI inline ios_base& nouppercase(ios_base& __str) {
767
  __str.unsetf(ios_base::uppercase);
768
  return __str;
769
}
770

771
_LIBCPP_HIDE_FROM_ABI inline ios_base& unitbuf(ios_base& __str) {
772
  __str.setf(ios_base::unitbuf);
773
  return __str;
774
}
775

776
_LIBCPP_HIDE_FROM_ABI inline ios_base& nounitbuf(ios_base& __str) {
777
  __str.unsetf(ios_base::unitbuf);
778
  return __str;
779
}
780

781
_LIBCPP_HIDE_FROM_ABI inline ios_base& internal(ios_base& __str) {
782
  __str.setf(ios_base::internal, ios_base::adjustfield);
783
  return __str;
784
}
785

786
_LIBCPP_HIDE_FROM_ABI inline ios_base& left(ios_base& __str) {
787
  __str.setf(ios_base::left, ios_base::adjustfield);
788
  return __str;
789
}
790

791
_LIBCPP_HIDE_FROM_ABI inline ios_base& right(ios_base& __str) {
792
  __str.setf(ios_base::right, ios_base::adjustfield);
793
  return __str;
794
}
795

796
_LIBCPP_HIDE_FROM_ABI inline ios_base& dec(ios_base& __str) {
797
  __str.setf(ios_base::dec, ios_base::basefield);
798
  return __str;
799
}
800

801
_LIBCPP_HIDE_FROM_ABI inline ios_base& hex(ios_base& __str) {
802
  __str.setf(ios_base::hex, ios_base::basefield);
803
  return __str;
804
}
805

806
_LIBCPP_HIDE_FROM_ABI inline ios_base& oct(ios_base& __str) {
807
  __str.setf(ios_base::oct, ios_base::basefield);
808
  return __str;
809
}
810

811
_LIBCPP_HIDE_FROM_ABI inline ios_base& fixed(ios_base& __str) {
812
  __str.setf(ios_base::fixed, ios_base::floatfield);
813
  return __str;
814
}
815

816
_LIBCPP_HIDE_FROM_ABI inline ios_base& scientific(ios_base& __str) {
817
  __str.setf(ios_base::scientific, ios_base::floatfield);
818
  return __str;
819
}
820

821
_LIBCPP_HIDE_FROM_ABI inline ios_base& hexfloat(ios_base& __str) {
822
  __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
823
  return __str;
824
}
825

826
_LIBCPP_HIDE_FROM_ABI inline ios_base& defaultfloat(ios_base& __str) {
827
  __str.unsetf(ios_base::floatfield);
828
  return __str;
829
}
830

831
_LIBCPP_END_NAMESPACE_STD
832

833
_LIBCPP_POP_MACROS
834

835
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
836
#  include <atomic>
837
#  include <concepts>
838
#  include <cstddef>
839
#  include <cstdlib>
840
#  include <cstring>
841
#  include <initializer_list>
842
#  include <limits>
843
#  include <mutex>
844
#  include <new>
845
#  include <stdexcept>
846
#  include <system_error>
847
#  include <type_traits>
848
#  include <typeinfo>
849
#endif
850

851
#endif // _LIBCPP_IOS
852