VirgilPythiaError.h

#ifndef VIRGIL_PYTHIA_ERROR_H
#define VIRGIL_PYTHIA_ERROR_H

#include <system_error>

#include "../VirgilCryptoError.h"

namespace virgil {
namespace crypto {
namespace pythia {

class VirgilPythiaErrorCategory : public std::error_category {
public:
    const char* name() const noexcept override;

    std::string message(int ev) const noexcept override;
};

const VirgilPythiaErrorCategory& pythia_error_category() noexcept;

inline int pythia_handler_get_result(int result) {
    if (result >= 0) {
        return result;
    }
    throw VirgilCryptoException(result, pythia_error_category());
}

inline void pythia_handler(int result) {
    (void)pythia_handler_get_result(result);
}

template <typename CatchHandler>
inline int pythia_handler_get_result(int result, CatchHandler catch_handler) {
    if (result >= 0) {
        return result;
    }
    try {
        throw VirgilCryptoException(result, pythia_error_category());
    } catch (...) {
        catch_handler(result);
        return 0;
    }
}

template <typename CatchHandler>
inline void pythia_handler(int result, CatchHandler catch_handler) {
    (void)pythia_handler_get_result<CatchHandler>(result, catch_handler);
}

} // namespace pythia
} // namespace crypto
} // namespace virgil

#endif // VIRGIL_PYTHIA_ERROR_H