Memory.h

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// Copyright Onix Solutions Limited [OnixS]. All rights reserved.
//
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//
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// agreements granting a non-assignable, non-transferable and non-exclusive license 
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// in the Agreement.
//
// Except as otherwise granted within the terms of the Agreement, copying or 
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//
 
#pragma once
 
#include <cstddef>
 
#include <OnixS/CME/ConflatedUDP/Integral.h>
 
ONIXS_CONFLATEDUDP_NAMESPACE_BEGIN

typedef UInt8 Byte;

typedef UInt16 Word;

typedef UInt32 DWord;

typedef UInt64 QWord;
 
//

template
<
    typename Type
>
inline 
void* 
toOpaquePtr(Type* ptr)
{
    return static_cast<void*>(ptr);
}

template
<
    typename Type
>
inline 
const void* 
toOpaquePtr(
    const Type* ptr)
{
    return static_cast<const void*>(ptr);
}

template
<
    typename Type
>
inline 
Byte* 
toByteBlock(
    Type* ptr)
{
    return 
        static_cast
        <Byte*>
        (toOpaquePtr(ptr));
}

template
<
    typename Type
>
inline 
const Byte* 
toByteBlock(
    const Type* ptr)
{
    return 
        static_cast
        <const Byte*>
        (toOpaquePtr(ptr));
}

template
<
    typename Type
>
inline 
Type*
advanceByBytes(
    Type* pointer, 
    ptrdiff_t distance)
{
    return 
        reinterpret_cast<Type*>
        (
            toByteBlock(pointer) + distance
        );
}

template
<
    typename Type
>
inline 
Type*
advanceBackByBytes(
    Type* pointer, 
    ptrdiff_t distance)
{
    return 
        reinterpret_cast<Type*>
        (
            toByteBlock(pointer) - distance
        );
}

template
<
    typename Left,
    typename Right
>
inline 
ptrdiff_t 
byteDistance(
    Left* left, 
    Right* right)
{
    return (
        toByteBlock(left) - 
        toByteBlock(right)
    );
}
 
ONIXS_CONFLATEDUDP_NAMESPACE_END