AutoCAD_FM_Plugin/ObjectARX 2016/inc/Ac64BitHelpers.h

//
//////////////////////////////////////////////////////////////////////////////
//
//  Copyright 2015 Autodesk, Inc.  All rights reserved.
//
//  Use of this software is subject to the terms of the Autodesk license 
//  agreement provided at the time of installation or download, or which 
//  otherwise accompanies this software in either electronic or hard copy form.   
//
//////////////////////////////////////////////////////////////////////////////
//
#pragma once

// replace _tcslen and wcslen with ac_wcslen, which returns unsigned
#include "ac_tcslen.h"
#include "adesk.h"

#define Ac64Assert AcTcsLen_Assert

#if defined(_ADESK_WINDOWS_)
#if !defined(_WIN64) && !defined (_AC64)

#ifdef GetWindowLongPtr
#undef GetWindowLongPtr
#endif
// The WinUser.h definitions omits the (LONG_PTR) casts, which can
// cause warnings in the 32-bit build with /Wp64
//
inline LONG_PTR __stdcall GetWindowLongPtr(HWND h, int n)
{
    return static_cast<LONG_PTR>(::GetWindowLong(h, n));
}

#ifdef SetWindowLongPtr
#undef SetWindowLongPtr
#endif
inline LONG_PTR __stdcall SetWindowLongPtr(HWND h, int n, LONG_PTR v)
{
    const long nLongV = static_cast<long>(v);
    return static_cast<LONG_PTR>(::SetWindowLong(h, n, nLongV));
}

inline LONG_PTR __stdcall SetWindowLongPtr(HWND h, int n, void * v)
{
    const LONG_PTR vPtr = reinterpret_cast<LONG_PTR>(v);
    return ::SetWindowLongPtr(h, n, vPtr);  // call above overload
}

#ifdef GetClassLongPtr
#undef GetClassLongPtr
#endif

inline ULONG_PTR __stdcall GetClassLongPtr(HWND h, int n)
{
   return static_cast<ULONG_PTR>(::GetClassLong(h, n));
}

#ifdef SetClassLongPtr
#undef SetClassLongPtr
#endif

inline ULONG_PTR __stdcall SetClassLongPtr(HWND h, int n, LONG_PTR v)
{
    const long vLong = static_cast<long>(v);
    return static_cast<ULONG_PTR>(::SetClassLong(h, n, vLong));
}

inline ULONG_PTR __stdcall SetClassLongPtr(HWND h, int n, void * v)
{
    const ULONG_PTR vPtr = reinterpret_cast<ULONG_PTR>(v);
    return ::SetClassLongPtr(h, n, vPtr);  // call above overload
}

// The msvc definition of this in stddef.h has a (size_t) cast on a
// pointer which causes a /Wp64 warning.  So we insert a (UINT_PTR)
// cast in between.  And then we go ahead and cast down to unsigned,
// since we know that member offsets will never exceed 4G.
//
#ifdef offsetof
#undef offsetof
#endif

#define offsetof(s,m) static_cast<unsigned>( \
             reinterpret_cast<UINT_PTR> (\
                 &reinterpret_cast<const volatile char&>( \
                     reinterpret_cast<const s *>(0)->m )))

#else  // !(_WIN64 || _AC64)
//These redefinitions are no longer necessary with VS 2012
#if _MSC_VER < 1700
// The msvc definition of this in windef.h has a (WORD) cast on a 
// DWORD_PTR that is shifted right 16 bits. This might cause Run 
// Time check failure #1 when RTTC is enabled, if the bits in the
// range from 16 to 64 are not all equal to 0 before the (WORD) 
// cast. Here, we forcibly set bits at position from 16 to 64 
// all to be 0.
//
#ifdef HIWORD
#undef HIWORD
#endif
// note: we leave in one C-style (DWORD_PTR) cast, because we don't know
// if v is an integer type (requiring static_cast) or a pointer type
// (requiring reinterpret_cast).
#define HIWORD(v) (static_cast<WORD>((((DWORD_PTR)(v) >> 16) & 0xFFFF)))
#endif
#endif // _WIN64 || _AC64
#endif // _ADESK_WINDOWS_

// The msvc definition of this in windef.h is bad in both 32-bit and
// 64-bit builds, triggering a Runtime Check assert.
// #define HIBYTE(w)           ((BYTE)((DWORD_PTR)(w) >> 8))
#ifdef  HIBYTE
#undef HIBYTE
#endif
#define HIBYTE(w)           LOBYTE((DWORD_PTR)(w) >> 8)

#pragma warning(push)
#pragma warning(disable:4100)//disable unreferenced formal parameter warning
inline int AcIntPtrToInt(Adesk::LongPtr nVal, Adesk::LongPtr nLimit = /*16M*/0x1000000)
{
    Ac64Assert(nVal < nLimit);
    Ac64Assert(nVal > -nLimit);   // it's a signed value, so assert at both ends of the range
    const int nRet = static_cast<int>(nVal);
    Ac64Assert(nRet == nVal);    // a little redundant, but make sure no bits are lost
    return nRet;
}

inline unsigned int AcUIntPtrToUInt(Adesk::ULongPtr nVal, Adesk::ULongPtr nLimit = /*16M*/0x1000000)
{
    Ac64Assert(nVal < nLimit);
    const unsigned int nRet = static_cast<unsigned int>(nVal);
    Ac64Assert(nRet == nVal);    // a little redundant, but make sure no bits are lost
    return nRet;
}
#pragma warning(pop)


// provide a polymophic function to parse INT_PTR string.
inline Adesk::LongPtr __stdcall AcStrToIntPtr(const wchar_t * s)
{
#if defined(_WIN64) || defined(_AC64)
    return _wtoi64(s);
#else
    return _wtoi(s);
#endif
}