unique_counter.hpp

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#pragma once
 
#include <yaclib/util/detail/default_deleter.hpp>
 
namespace yaclib::detail {
 
template <typename CounterBase, typename Deleter = DefaultDeleter>
struct OneCounter : CounterBase {
  template <typename... Args>
  OneCounter(std::size_t, Args&&... args) noexcept(std::is_nothrow_constructible_v<CounterBase, Args&&...>)
    : CounterBase{std::forward<Args>(args)...} {
  }
 
  constexpr bool SubEqual(std::size_t) const {
    return false;
  }
 
  // compiler remove this call from code
  void Add(std::size_t) noexcept {  // LCOV_EXCL_LINE
  }                                 // LCOV_EXCL_LINE
 
  void Sub(std::size_t) noexcept {
    Deleter::Delete(*this);
  }
};
 
}  // namespace yaclib::detail