error.hpp

#pragma once
 
#include <optional>
 
#include "errors/detail/interface.hpp"
 
namespace errors
{
 
class error_ptr;
struct source_location;
 
class error : public virtual detail::interface {
    public:
        [[nodiscard]]
        virtual const char *what() const noexcept = 0;
        [[nodiscard]]
        virtual const error_ptr &cause() const & noexcept = 0;
        [[nodiscard]]
        virtual error_ptr cause() && noexcept = 0;
        [[nodiscard]]
        virtual std::optional<source_location> location() const noexcept = 0;
};
static_assert(std::is_abstract<error>());
}