json-validator/include/jvalidate/detail/on_block_exit.h

#pragma once

#include <functional>
namespace jvalidate::detail {
class OnBlockExit {
private:
  std::function<void()> callback_;

public:
  OnBlockExit() = default;
  template <typename F> OnBlockExit(F && callback) : callback_(callback) {}

  OnBlockExit(OnBlockExit && other) { std::swap(other.callback_, callback_); }

  OnBlockExit & operator=(OnBlockExit && other) {
    std::swap(other.callback_, callback_);
    return *this;
  }

  ~OnBlockExit() {
    if (callback_) {
      callback_();
    }
  }
};
}