STL/stl/inc/ios

// ios standard header

// Copyright (c) Microsoft Corporation.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

#pragma once
#ifndef _IOS_
#define _IOS_
#include <yvals_core.h>
#if _STL_COMPILER_PREPROCESSOR
#include <xlocnum>

#pragma pack(push, _CRT_PACKING)
#pragma warning(push, _STL_WARNING_LEVEL)
#pragma warning(disable : _STL_DISABLED_WARNINGS)
_STL_DISABLE_CLANG_WARNINGS
#pragma push_macro("new")
#undef new

_STD_BEGIN
// CLASS TEMPLATE basic_ios
template <class _Elem, class _Traits>
class basic_ios : public ios_base { // base class for basic_istream/basic_ostream
public:
    using _Myos       = basic_ostream<_Elem, _Traits>;
    using _Mysb       = basic_streambuf<_Elem, _Traits>;
    using _Ctype      = ctype<_Elem>;
    using char_type   = _Elem;
    using traits_type = _Traits;
    using int_type    = typename _Traits::int_type;
    using pos_type    = typename _Traits::pos_type;
    using off_type    = typename _Traits::off_type;

    explicit __CLR_OR_THIS_CALL basic_ios(_Mysb* _Strbuf) {
        init(_Strbuf);
    }

    virtual __CLR_OR_THIS_CALL ~basic_ios() noexcept {}

    void __CLR_OR_THIS_CALL clear(iostate _State = goodbit, bool _Reraise = false) {
        // set state, possibly reraise exception
        ios_base::clear(_State | (_Mystrbuf ? ios_base::_Iostate{} : ios_base::badbit), _Reraise);
    }

#if _HAS_OLD_IOSTREAMS_MEMBERS
    void __CLR_OR_THIS_CALL clear(io_state _State) { // set state to _State
        clear(static_cast<iostate>(_State));
    }
#endif // _HAS_OLD_IOSTREAMS_MEMBERS

    void __CLR_OR_THIS_CALL setstate(
        iostate _State, bool _Reraise = false) { // merge _State into state, possibly reraise exception
        clear(rdstate() | _State, _Reraise);
    }

#if _HAS_OLD_IOSTREAMS_MEMBERS
    void __CLR_OR_THIS_CALL setstate(io_state _State) { // merge _State into state
        setstate(static_cast<iostate>(_State));
    }
#endif // _HAS_OLD_IOSTREAMS_MEMBERS

    basic_ios& __CLR_OR_THIS_CALL copyfmt(const basic_ios& _Right) { // copy format parameters
        _Tiestr = _Right.tie();
        _Fillch = _Right.fill();
        ios_base::copyfmt(_Right);
        return *this;
    }

    _Myos* __CLR_OR_THIS_CALL tie() const {
        return _Tiestr;
    }

    _Myos* __CLR_OR_THIS_CALL tie(_Myos* _Newtie) { // set tie pointer
        _Myos* _Oldtie = _Tiestr;
        _Tiestr        = _Newtie;
        return _Oldtie;
    }

    _NODISCARD _Mysb* __CLR_OR_THIS_CALL rdbuf() const {
        return _Mystrbuf;
    }

    _Mysb* __CLR_OR_THIS_CALL rdbuf(_Mysb* _Strbuf) { // set stream buffer pointer
        _Mysb* _Oldstrbuf = _Mystrbuf;
        _Mystrbuf         = _Strbuf;
        clear();
        return _Oldstrbuf;
    }

    locale __CLR_OR_THIS_CALL imbue(const locale& _Loc) { // set locale to argument
        locale _Oldlocale = ios_base::imbue(_Loc);
        const auto _Rdbuf = rdbuf();
        if (_Rdbuf) {
            _Rdbuf->pubimbue(_Loc);
        }

        return _Oldlocale;
    }

    _Elem __CLR_OR_THIS_CALL fill() const {
        return _Fillch;
    }

    _Elem __CLR_OR_THIS_CALL fill(_Elem _Newfill) { // set fill character
        _Elem _Oldfill = _Fillch;
        _Fillch        = _Newfill;
        return _Oldfill;
    }

    char __CLR_OR_THIS_CALL narrow(_Elem _Ch, char _Dflt = '\0') const { // convert _Ch to byte using imbued locale
        return _STD use_facet<_Ctype>(getloc()).narrow(_Ch, _Dflt);
    }

    _Elem __CLR_OR_THIS_CALL widen(char _Byte) const { // convert _Byte to character using imbued locale
        return _STD use_facet<_Ctype>(getloc()).widen(_Byte);
    }

    void __CLR_OR_THIS_CALL move(basic_ios& _Right) {
        if (this != _STD addressof(_Right)) {
            _Mystrbuf = nullptr;
            _Tiestr   = nullptr;
            this->swap(_Right);
        }
    }

    void __CLR_OR_THIS_CALL move(basic_ios&& _Right) {
        if (this != _STD addressof(_Right)) {
            _Mystrbuf = nullptr;
            _Tiestr   = nullptr;
            this->swap(_Right);
        }
    }

    void __CLR_OR_THIS_CALL swap(basic_ios& _Right) noexcept { // swap all but rdbuf() with right
        ios_base::swap(_Right);
        _STD swap(_Fillch, _Right._Fillch);
        _STD swap(_Tiestr, _Right._Tiestr);
    }

    void __CLR_OR_THIS_CALL set_rdbuf(_Mysb* _Strbuf) { // set stream buffer pointer without changing state
        _Mystrbuf = _Strbuf;
    }

protected:
    void __CLR_OR_THIS_CALL init(_Mysb* _Strbuf = nullptr,
        bool _Isstd                             = false) { // initialize with stream buffer pointer
        _Init(); // initialize ios_base
        _Mystrbuf = _Strbuf;
        _Tiestr   = nullptr;
        _Fillch   = widen(' ');

        if (!_Mystrbuf) {
            setstate(badbit);
        }

        if (_Isstd) {
            _Addstd(this); // special handling for standard streams
        }
    }

    __CLR_OR_THIS_CALL basic_ios() {}

private:
    _Mysb* _Mystrbuf; // pointer to stream buffer
    _Myos* _Tiestr; // pointer to tied output stream
    _Elem _Fillch; // the fill character

public:
    __CLR_OR_THIS_CALL basic_ios(const basic_ios&) = delete;
    basic_ios& __CLR_OR_THIS_CALL operator=(const basic_ios&) = delete;
};

#if defined(_DLL_CPPLIB)

#if !defined(_CRTBLD) || defined(__FORCE_INSTANCE)
template class _CRTIMP2_PURE_IMPORT basic_ios<char, char_traits<char>>;
template class _CRTIMP2_PURE_IMPORT basic_ios<wchar_t, char_traits<wchar_t>>;
#endif // !defined(_CRTBLD) || defined(__FORCE_INSTANCE)

#ifdef __FORCE_INSTANCE
template class _CRTIMP2_PURE_IMPORT basic_ios<unsigned short, char_traits<unsigned short>>;
#endif // __FORCE_INSTANCE
#endif // defined(_DLL_CPPLIB)

// MANIPULATORS
inline ios_base& __CLRCALL_OR_CDECL boolalpha(ios_base& _Iosbase) { // set boolalpha
    _Iosbase.setf(ios_base::boolalpha);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL dec(ios_base& _Iosbase) { // set basefield to dec
    _Iosbase.setf(ios_base::dec, ios_base::basefield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL defaultfloat(ios_base& _Iosbase) { // clear floatfield
    _Iosbase.unsetf(ios_base::floatfield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL fixed(ios_base& _Iosbase) { // set floatfield to fixed
    _Iosbase.setf(ios_base::fixed, ios_base::floatfield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL hex(ios_base& _Iosbase) { // set basefield to hex
    _Iosbase.setf(ios_base::hex, ios_base::basefield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL hexfloat(ios_base& _Iosbase) { // set floatfield to hexfloat
    _Iosbase.setf(ios_base::hexfloat, ios_base::floatfield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL internal(ios_base& _Iosbase) { // set adjustfield to internal
    _Iosbase.setf(ios_base::internal, ios_base::adjustfield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL left(ios_base& _Iosbase) { // set adjustfield to left
    _Iosbase.setf(ios_base::left, ios_base::adjustfield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL noboolalpha(ios_base& _Iosbase) { // clear boolalpha
    _Iosbase.unsetf(ios_base::boolalpha);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL noshowbase(ios_base& _Iosbase) { // clear showbase
    _Iosbase.unsetf(ios_base::showbase);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL noshowpoint(ios_base& _Iosbase) { // clear showpoint
    _Iosbase.unsetf(ios_base::showpoint);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL noshowpos(ios_base& _Iosbase) { // clear showpos
    _Iosbase.unsetf(ios_base::showpos);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL noskipws(ios_base& _Iosbase) { // clear skipws
    _Iosbase.unsetf(ios_base::skipws);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL nounitbuf(ios_base& _Iosbase) { // clear unitbuf
    _Iosbase.unsetf(ios_base::unitbuf);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL nouppercase(ios_base& _Iosbase) { // clear uppercase
    _Iosbase.unsetf(ios_base::uppercase);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL oct(ios_base& _Iosbase) { // set oct in basefield
    _Iosbase.setf(ios_base::oct, ios_base::basefield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL right(ios_base& _Iosbase) { // set right in adjustfield
    _Iosbase.setf(ios_base::right, ios_base::adjustfield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL scientific(ios_base& _Iosbase) { // set scientific in floatfield
    _Iosbase.setf(ios_base::scientific, ios_base::floatfield);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL showbase(ios_base& _Iosbase) { // set showbase
    _Iosbase.setf(ios_base::showbase);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL showpoint(ios_base& _Iosbase) { // set showpoint
    _Iosbase.setf(ios_base::showpoint);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL showpos(ios_base& _Iosbase) { // set showpos
    _Iosbase.setf(ios_base::showpos);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL skipws(ios_base& _Iosbase) { // set skipws
    _Iosbase.setf(ios_base::skipws);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL unitbuf(ios_base& _Iosbase) { // set unitbuf
    _Iosbase.setf(ios_base::unitbuf);
    return _Iosbase;
}

inline ios_base& __CLRCALL_OR_CDECL uppercase(ios_base& _Iosbase) { // set uppercase
    _Iosbase.setf(ios_base::uppercase);
    return _Iosbase;
}

#if _HAS_TR1_NAMESPACE
namespace _DEPRECATE_TR1_NAMESPACE tr1 {
    using _STD hexfloat;
}
#endif // _HAS_TR1_NAMESPACE

_STD_END

#pragma pop_macro("new")
_STL_RESTORE_CLANG_WARNINGS
#pragma warning(pop)
#pragma pack(pop)
#endif // _STL_COMPILER_PREPROCESSOR
#endif // _IOS_