ResolveError.hxx

#pragma once
 
// Linux
#include <netdb.h>
 
// C++
#include <iosfwd>
#include <string_view>
 
// cosmos
#include <cosmos/error/CosmosError.hxx>
#include <cosmos/error/errno.hxx>
 
// see errno.hxx for the reason for this
#ifdef NO_DATA
#       undef NO_DATA
#endif
 
namespace cosmos {
 
 
class COSMOS_API ResolveError :
                public CosmosError {
public: // types
 
        enum class Code : int {
                ADDR_FAMILY = EAI_ADDRFAMILY,
                AGAIN       = EAI_AGAIN,
                BAD_FLAGS   = EAI_BADFLAGS,
                FAIL        = EAI_FAIL,
                FAMILY      = EAI_FAMILY,
                MEMORY      = EAI_MEMORY,
                NO_DATA     = EAI_NODATA,
                NO_NAME     = EAI_NONAME,
                SERVICE     = EAI_SERVICE,
                SOCKTYPE    = EAI_SOCKTYPE,
                SYSTEM      = EAI_SYSTEM,
                OVERFLOW    = EAI_OVERFLOW,
        };
 
public: // functions
 
 
        explicit ResolveError(const Code code);
 
        Code code() const {
                return m_eai_code;
        }
 
 
        Errno systemError() const {
                return m_system_errno;
        }
 
        std::string_view msg() const { return msg(m_eai_code); }
 
        static std::string_view msg(const Code code);
 
        COSMOS_ERROR_IMPL;
 
protected: // functions
 
        void generateMsg() const override;
 
protected: // data
 
        Code m_eai_code;
        Errno m_system_errno;
};
 
} // end ns
 
COSMOS_API std::ostream& operator<<(std::ostream &o, const cosmos::ResolveError::Code code);