operation.hpp

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#pragma once
 
#include <expected>
#include <vector>
 
#include "porytiles2/domain/orchestration/operand_bundle.hpp"
#include "porytiles2/domain/orchestration/operand_declaration.hpp"
#include "porytiles2/xcut/panic/panic.hpp"
#include "porytiles2/xcut/result/chainable_result.hpp"
#include "porytiles2/xcut/result/error.hpp"
 
namespace porytiles2 {
 
class Operation {
  public:
    virtual ~Operation() = default;
 
    [[nodiscard]] virtual std::vector<OperandDeclaration> declare_inputs() const = 0;
 
    [[nodiscard]] virtual std::vector<OperandDeclaration> declare_outputs() const = 0;
 
    [[nodiscard]] virtual ChainableResult<OperandBundle> apply(const OperandBundle &inputs)
    {
        const auto declared_inputs = declare_inputs();
        if (!inputs.satisfies_declarations(declared_inputs)) {
            panic(fmt::format("op '{}' declared inputs were not satisfied", name()));
        }
        return execute(inputs);
    }
 
    [[nodiscard]] const std::string &name() const
    {
        return name_;
    }
 
    void set_name(const std::string &name)
    {
        name_ = name;
    }
 
  protected:
    [[nodiscard]] virtual ChainableResult<OperandBundle> execute(const OperandBundle &inputs) = 0;
 
  private:
    std::string name_;
};
 
} // namespace porytiles2