void_ptr.h

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/*
 * Copyright 2015-2022 CNRS-UM LIRMM, CNRS-AIST JRL
 */
 
#pragma once
 
#include <memory>
 
namespace mc_rtc
{
 
using void_ptr = std::unique_ptr<void, void (*)(void *)>;
 
template<typename T, typename... Args>
void_ptr make_void_ptr(Args &&... args)
{
  return {new T(std::forward<Args>(args)...), [](void * ptr) { delete static_cast<T *>(ptr); }};
}
 
template<typename T>
void_ptr make_void_ptr(std::unique_ptr<T> ptr)
{
  return {ptr.release(), [](void * ptr) { delete static_cast<T *>(ptr); }};
}
 
template<typename T>
struct void_ptr_caster
{
  T * operator()(void_ptr & ptr) { return static_cast<T *>(ptr.get()); }
 
  const T * operator()(const void_ptr & ptr) { return static_cast<const T *>(ptr.get()); }
};
 
} // namespace mc_rtc