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June 20, 2001 revision:

Browse source 
* ported by Nick Thurn to gcc
* many bug fixes


git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@7 7ec92016-0320-0410-acc4-a06ded1c099a
This commit is contained in:
aandrei 2001-11-21 09:31:45 +00:00
parent 2ffd6b016f
commit 1fadda9836
24 changed files with 612 additions and 686 deletions
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45
TypeManip.h
View file

@ -13,7 +13,7 @@
// without express or implied warranty.
////////////////////////////////////////////////////////////////////////////////
// Last update: February 19, 2001
// Last update: June 20, 2001
#ifndef TYPEMANIP_INC_
#define TYPEMANIP_INC_
@ -73,8 +73,15 @@ namespace Loki
namespace Private
{
typedef char Small;
class Big { char dummy[2]; };
template <class T, class U>
struct ConversionHelper
{
typedef char Small;
struct Big { char dummy[2]; };
static Big Test(...);
static Small Test(U);
static T MakeT();
};
}
////////////////////////////////////////////////////////////////////////////////
@ -94,37 +101,33 @@ namespace Loki
////////////////////////////////////////////////////////////////////////////////
template <class T, class U>
class Conversion
struct Conversion
{
static Private::Big Test(...);
static Private::Small Test(U);
static T MakeT();
public:
enum { exists = sizeof(Test(MakeT())) == sizeof(Private::Small) };
enum { exists2Way = exists &&
Conversion<U, T>::exists };
typedef Private::ConversionHelper<T, U> H;
#ifndef __MWERKS__
enum { exists = sizeof(typename H::Small) == sizeof(H::Test(H::MakeT())) };
#else
enum { exists = false };
#endif
enum { exists2Way = exists && Conversion<U, T>::exists };
enum { sameType = false };
};
template <class T>
class Conversion<T, T>
struct Conversion<T, T>
{
public:
enum { exists = 1, exists2Way = 1,sameType = 1 };
};
template <class T>
class Conversion<void, T>
struct Conversion<void, T>
{
public:
enum { exists = 1, exists2Way = 0,sameType = 0 };
};
template <class T>
class Conversion<T, void>
struct Conversion<T, void>
{
public:
enum { exists = 1, exists2Way = 0,sameType = 0 };
};
@ -161,5 +164,9 @@ namespace Loki
(SUPERSUBCLASS(T, U) && \
!::Loki::Conversion<const T, const U>::sameType)
////////////////////////////////////////////////////////////////////////////////
// Change log:
// June 20, 2001: ported by Nick Thurn to gcc 2.95.3. Kudos, Nick!!!
////////////////////////////////////////////////////////////////////////////////
#endif // TYPEMANIP_INC_
#endif // TYPEMANIP_INC_