mirror of
https://github.com/darlinghq/darling-WTF.git
synced 2024-11-23 11:59:47 +00:00
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2006 Apple Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public License
|
|
* along with this library; see the file COPYING.LIB. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef WTF_GetPtr_h
|
|
#define WTF_GetPtr_h
|
|
|
|
#include <memory>
|
|
|
|
namespace WTF {
|
|
|
|
enum HashTableDeletedValueType { HashTableDeletedValue };
|
|
enum HashTableEmptyValueType { HashTableEmptyValue };
|
|
|
|
template <typename T> inline T* getPtr(T* p) { return p; }
|
|
|
|
template <typename T> struct IsSmartPtr {
|
|
static const bool value = false;
|
|
};
|
|
|
|
template <typename T, bool isSmartPtr>
|
|
struct GetPtrHelperBase;
|
|
|
|
template <typename T>
|
|
struct GetPtrHelperBase<T, false /* isSmartPtr */> {
|
|
typedef T* PtrType;
|
|
static T* getPtr(T& p) { return std::addressof(p); }
|
|
};
|
|
|
|
template <typename T>
|
|
struct GetPtrHelperBase<T, true /* isSmartPtr */> {
|
|
typedef typename T::PtrType PtrType;
|
|
static PtrType getPtr(const T& p) { return p.get(); }
|
|
};
|
|
|
|
template <typename T>
|
|
struct GetPtrHelper : GetPtrHelperBase<T, IsSmartPtr<T>::value> {
|
|
};
|
|
|
|
template <typename T>
|
|
inline typename GetPtrHelper<T>::PtrType getPtr(T& p)
|
|
{
|
|
return GetPtrHelper<T>::getPtr(p);
|
|
}
|
|
|
|
template <typename T>
|
|
inline typename GetPtrHelper<T>::PtrType getPtr(const T& p)
|
|
{
|
|
return GetPtrHelper<T>::getPtr(p);
|
|
}
|
|
|
|
// Explicit specialization for C++ standard library types.
|
|
|
|
template <typename T, typename Deleter> struct IsSmartPtr<std::unique_ptr<T, Deleter>> {
|
|
static const bool value = true;
|
|
};
|
|
|
|
template <typename T, typename Deleter>
|
|
struct GetPtrHelper<std::unique_ptr<T, Deleter>> {
|
|
typedef T* PtrType;
|
|
static T* getPtr(const std::unique_ptr<T, Deleter>& p) { return p.get(); }
|
|
};
|
|
|
|
} // namespace WTF
|
|
|
|
#endif // WTF_GetPtr_h
|