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// Copyright 2024-2026, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/ne-foss-org/nekernel
#ifndef NEKIT_FUNCTION_H
#define NEKIT_FUNCTION_H
#include <NeKit/Config.h>
#include <NeKit/ErrorOr.h>
namespace Kernel {
/// @brief Function Pointer Container.
template <typename T, typename... Args>
class Function final {
public:
Function() = delete;
Function(nullPtr) = delete;
~Function() = default;
Function(T (*Fn)(Args... args)) : fFn(Fn) { MUST_PASS(fFn); }
Function& operator=(const Function&) = delete;
Function(const Function&) = delete;
T operator()(Args&&... args) { return fFn(forward<Args...>(args)...); }
explicit operator bool() { return fFn; }
bool operator!() { return !fFn; }
private:
T (*fFn)(Args... args){nullptr};
};
template <typename T, typename... Args>
using FunctionOr = ErrorOr<Function<T, Args...>>;
template <typename T, typename... Args>
using FunctionRef = Ref<Function<T, Args...>>;
} // namespace Kernel
#endif
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