IPv4SubnetMask.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Containers/UnrealString.h"
#include "CoreMinimal.h"
#include "HAL/Platform.h"
#include "Internationalization/Text.h"
#include "Serialization/Archive.h"
#include "Templates/TypeHash.h"
 
namespace EIPv4SubnetClasses
{
    enum Type
    {
        Invalid,
 
        ClassA,
 
        ClassB,
 
        ClassC
    };
}
 
 
struct FIPv4SubnetMask
{
    union
    {
        struct
        {
#if PLATFORM_LITTLE_ENDIAN
    #ifdef _MSC_VER
            uint8 D, C, B, A;
    #else
            uint8 D GCC_ALIGN(4);
            uint8 C, B, A;
    #endif
#else
            uint8 A, B, C, D;
#endif
        };
 
        int32 Value;
    };
 
public:
 
    FIPv4SubnetMask() { }
 
    FIPv4SubnetMask(uint8 InA, uint8 InB, uint8 InC, uint8 InD)
#if PLATFORM_LITTLE_ENDIAN
        : D(InD)
        , C(InC)
        , B(InB)
        , A(InA)
#else
        : A(InA)
        , B(InB)
        , C(InC)
        , D(InD)
#endif // PLATFORM_LITTLE_ENDIAN
    { }
    
    FIPv4SubnetMask(uint32 InValue)
        : Value(InValue)
    { }
 
public:
 
    bool operator==(const FIPv4SubnetMask& Other) const
    {
        return (Value == Other.Value);
    }
 
    bool operator!=(const FIPv4SubnetMask& Other) const
    {
        return (Value != Other.Value);
    }
 
    FIPv4SubnetMask operator~() const
    {
        return FIPv4SubnetMask(~Value);
    }
 
    friend FArchive& operator<<(FArchive& Ar, FIPv4SubnetMask& SubnetMask)
    {
        return Ar << SubnetMask.Value;
    }
 
public:
 
    EIPv4SubnetClasses::Type GetClass() const
    {
        if (A == 255)
        {
            if (B == 255)
            {
                if (C == 255)
                {
                    return EIPv4SubnetClasses::ClassC;
                }
 
                return EIPv4SubnetClasses::ClassB;
            }
 
            return EIPv4SubnetClasses::ClassA;
        }
 
        return EIPv4SubnetClasses::Invalid;
    }
 
    NETWORKING_API FString ToString() const;
 
    FText ToText() const
    {
        return FText::FromString(ToString());
    }
 
public:
 
    friend uint32 GetTypeHash(const FIPv4SubnetMask& SubnetMask)
    {
        return GetTypeHash(SubnetMask.Value);
    }
 
public:
    
    static NETWORKING_API bool Parse(const FString& MaskString, FIPv4SubnetMask& OutMask);
};