TClosure.h

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#pragma once
#include <functional>
 
namespace sf
{
 
template<typename Result, typename... Args>
class TClosure
{
  public:
    typedef std::function<Result(Args...)> func_type;
 
    TClosure() = default;
 
    TClosure(const TClosure& c);
 
    explicit TClosure(const func_type& fn);
 
    TClosure& assign(const func_type& fn);
 
    template<typename ClassType, typename MethodType, typename... BoundArgs>
    TClosure& assign(ClassType* cls, MethodType mtd, BoundArgs... args);
 
    TClosure& unassign();
 
    TClosure& operator=(const TClosure& c);
 
    TClosure& operator=(const func_type& f);
 
    Result operator()(Args... args) const;
 
    [[nodiscard]] bool isAssigned() const;
 
    explicit operator bool() const;
 
  protected:
    Result call(Args... args) const;
 
  private:
    func_type _func{nullptr};
};
 
}// namespace sf
 
// Include all inlined functions and template implementations.
#include <misc/gen/TClosure.hpp>