error_code.hpp

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#ifndef PLSSVM_BACKENDS_OPENCL_DETAIL_ERROR_CODE_HPP_
#define PLSSVM_BACKENDS_OPENCL_DETAIL_ERROR_CODE_HPP_
#pragma once
 
#include "CL/cl.h"      // cl_int, CL_SUCCESS
 
#include <iosfwd>       // forward declare std::ostream
#include <string_view>  // std::string_view
 
namespace plssvm::opencl::detail {
 
class error_code {
  public:
    error_code() = default;
    error_code(cl_int error) noexcept;
 
    error_code &operator=(cl_int error) noexcept;
    void assign(cl_int error) noexcept;
 
    void clear() noexcept;
 
    [[nodiscard]] cl_int value() const noexcept;
    [[nodiscard]] std::string_view message() const noexcept;
    [[nodiscard]] explicit operator bool() const noexcept;
    [[nodiscard]] cl_int *operator&() noexcept;
 
  private:
    cl_int err_{ CL_SUCCESS };
};
 
std::ostream &operator<<(std::ostream &out, error_code ec);
[[nodiscard]] bool operator==(error_code lhs, error_code rhs) noexcept;
[[nodiscard]] bool operator!=(error_code lhs, error_code rhs) noexcept;
 
}  // namespace plssvm::opencl::detail
 
#endif  // PLSSVM_BACKENDS_OPENCL_DETAIL_ERROR_CODE_HPP_