CODEWITHSUNDEEP
c++structcomparisonconstants
Jesse Brands
Jesse Brands

Reputation: 2877

Problems comparing value to member of a struct

This question is a follow up on: Redefinition and Enumerator

My C++ compiler gives the following warning and error:

1>forgelib\source\socket.cpp(145): warning C4832: token '.' is illegal after UDT 'Forge::AddressFamily'
1>          forgelib\include\forge\socket.h(70) : see declaration of 'Forge::AddressFamily'
1>forgelib\source\socket.cpp(145): error C2275: 'Forge::AddressFamily' : illegal use of this type as an expression
1>          forgelib\include\forge\socket.h(70) : see declaration of 'Forge::AddressFamily'
1>forgelib\source\socket.cpp(145): error C2228: left of '.INet' must have class/struct/union

This is socket.cpp(145):

void Forge::InternetHost::validHostEntity(hostent* he) {
    if (he->h_addrtype != AddressFamily.INet || he->h_length != 4) { // <--145
        throw new Forge::SocketException("Address family mismatch.");
    }
}

This is the definition:

struct AddressFamily {
    static const Forge::Int Unspecified = AF_UNSPEC;
    static const Forge::Int UNIX = AF_UNIX;
    static const Forge::Int INet = AF_INET;
    static const Forge::Int IPX = AF_IPX;
    static const Forge::Int AppleTalk = AF_APPLETALK;
    static const Forge::Int INet6 = AF_INET6;
};

Am I missing something here that's really obvious?

Upvotes: 0

Views: 101

Answers (3)

ahoka
ahoka

Reputation: 412

You should try like this to access the static member:

AddressFamily::INet

Upvotes: 2

ForEveR
ForEveR

Reputation: 55887

Should be

he->h_addrtype != AddressFamily::INet

since INet is a static member of struct.

Upvotes: 2

juanchopanza
juanchopanza

Reputation: 227390

INet is a static member of AddressFamily so you need

AddressFamily::INet

Upvotes: 2

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