compute_cell.hpp

/*
 * live_cells_cpp
 * Copyright (C) 2024  Alexander Gutev <alex.gutev@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you
 * may not use this file except in compliance with the License.  You
 * may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.  See the License for the specific language governing
 * permissions and limitations under the License.
 */
 
#ifndef LIVE_CELLS_COMPUTE_CELL_HPP
#define LIVE_CELLS_COMPUTE_CELL_HPP
 
#include <concepts>
#include <type_traits>
 
#include "dependent_cell.hpp"
#include "make_cell.hpp"
 
namespace live_cells {
 
    template <std::invocable F, Cell... Ts>
    class compute_cell_base : public dependent_cell<Ts...> {
    public:
        compute_cell_base(F compute, Ts... args) :
            dependent_cell<Ts...>(args...),
            compute(compute) {}
 
        auto value() const {
            return compute();
        }
 
    private:
        const F compute;
 
    };
 
    template <std::invocable F, Cell... Ts>
    using compute_cell = make_cell<compute_cell_base<F,Ts...>>;
 
    auto make_compute_cell(std::invocable auto f, auto... args) {
        return compute_cell<decltype(f), decltype(args)...>(f, args...);
    }
 
    auto make_compute_cell(key_ref key, std::invocable auto f, auto... args) {
        return compute_cell<decltype(f), decltype(args)...>(key, f, args...);
    }
 
}  // live_cells
 
#endif /* LIVE_CELLS_COMPUTE_CELL_HPP */