_System_error_category Class Reference

Inheritance diagram for _System_error_category:

Public Member Functions
	_System_error_category () _NOEXCEPT
virtual const char *	name () const _NOEXCEPT
virtual string	message (int _Errcode) const
virtual error_condition	default_error_condition (int _Errval) const _NOEXCEPT
Public Member Functions inherited from error_category
	error_category () _NOEXCEPT
virtual	~error_category () _NOEXCEPT
virtual bool	equivalent (int _Errval, const error_condition &_Cond) const _NOEXCEPT
virtual bool	equivalent (const error_code &_Code, int _Errval) const _NOEXCEPT
bool	operator== (const error_category &_Right) const _NOEXCEPT
bool	operator!= (const error_category &_Right) const _NOEXCEPT
bool	operator< (const error_category &_Right) const _NOEXCEPT
	error_category (const error_category &)=delete
error_category &	operator= (const error_category &)=delete

Additional Inherited Members
Protected Types inherited from error_category
enum	: uintptr_t { _Future_addr = 1, _Generic_addr = 3, _Iostream_addr = 5, _System_addr = 7 }
Protected Attributes inherited from error_category
uintptr_t	_Addr

Constructor & Destructor Documentation

_System_error_category::_System_error_category ( )

inline

        {   // default constructor
        _Addr = _System_addr;
        }

Member Function Documentation

virtual error_condition _System_error_category::default_error_condition ( int  _Errval ) const

inlinevirtual

Reimplemented from error_category.

        {   // make error_condition for error code (generic if possible)
        int _Posv = _Winerror_map(_Errval);

        if (_Posv != 0)
            return (error_condition(_Posv, generic_category()));
        else
            return (error_condition(_Errval, system_category()));
        }

virtual string _System_error_category::message ( int  _Errcode ) const

inlinevirtual

Implements error_category.

        {   // convert to name of error
        const unsigned long _Size = 32767;
        string _Narrow(_Size, '\0');

        const unsigned long _Val = _Winerror_message(
            static_cast<unsigned long>(_Errcode), &_Narrow[0], _Size);

        if (_Val == 0)
            return ("unknown error");

        _Narrow.resize(_Val);
        _Narrow.shrink_to_fit();
        return (_Narrow);
        }

virtual const char* _System_error_category::name ( ) const

inlinevirtual

Implements error_category.

        {   // get name of category
        return ("system");
        }

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The documentation for this class was generated from the following file:

• VS2017/inc/system_error