cleanup_group.hpp

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#ifndef EAGINE_CLEANUP_GROUP_HPP
#define EAGINE_CLEANUP_GROUP_HPP
 
#include <eagine/memory/object_storage.hpp>
#include <eagine/scope_exit.hpp>
 
namespace eagine {
//------------------------------------------------------------------------------
class cleanup_group {
private:
    memory::object_storage _storage;
 
public:
    template <
      typename Func,
      typename = std::enable_if_t<std::is_invocable_v<Func>>,
      typename = std::enable_if_t<std::is_void_v<std::invoke_result_t<Func>>>>
    auto add(Func func) -> auto& {
        return _storage.template emplace<func_on_scope_exit<Func>>(
          std::move(func));
    }
 
    template <
      typename Func,
      typename = std::enable_if_t<std::is_invocable_v<Func>>>
    auto add_ret(Func func) -> auto& {
        return add([func{std::move(func)}]() { func(); });
    }
 
    void reserve(span_size_t n) {
        _storage.reserve(n);
    }
 
    auto is_empty() const noexcept {
        return _storage.is_empty();
    }
 
    void clear() noexcept {
        _storage.clear();
    }
};
//------------------------------------------------------------------------------
} // namespace eagine
 
#endif // EAGINE_CLEANUP_GROUP_HPP