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ptr.h
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ptr.h
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// Source: https://github.com/X-czh/smart_ptr
// SPDX-License-Identifier: MIT
//
// This file has been modified by Adobe.
//
// All modifications are Copyright 2022 Adobe.
#pragma once
#include <tuple> // tuple, get(tuple)
namespace lagrange::internal {
// ptr class that wraps the deleter, use tuple for Empty Base Optimization
template <typename T, typename D>
class ptr
{
public:
using pointer = T*;
using deleter_type = D;
constexpr ptr() noexcept = default;
ptr(pointer p)
: _impl_t{}
{
_impl_ptr() = p;
}
template <typename Del>
ptr(pointer p, Del&& d)
: _impl_t{p, std::forward<Del>(d)}
{}
~ptr() noexcept = default;
pointer& _impl_ptr() { return std::get<0>(_impl_t); }
pointer _impl_ptr() const { return std::get<0>(_impl_t); }
deleter_type& _impl_deleter() { return std::get<1>(_impl_t); }
const deleter_type& _impl_deleter() const { return std::get<1>(_impl_t); }
private:
std::tuple<pointer, deleter_type> _impl_t;
};
} // namespace lagrange::internal