error.h

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#pragma once
 
#include <exception>
#include <stdexcept>
#include <utility>
 
namespace flyby {
    class not_implemented_error final : public std::exception {
    public:
        not_implemented_error() = default;

        const char* what() {
            return "Function not implemented.";
        }
    };

    class not_available_error final : public std::exception {
    public:
        not_available_error() = default;

        const char* what() {
            return "Operaiton not available.";
        }
    };

    class parse_error final : public std::exception {
    public:
        parse_error() = default;

        const char* what() {
            return "Object cannot be parsed correctly.";
        }
    };

    class invalid_operation_error final : public std::exception {
    public:
        invalid_operation_error()
            : m_what_arg { "Invalid operation" } {}

        explicit invalid_operation_error(std::string what_arg)
            : m_what_arg { std::move(what_arg) } {}

        const char* what() {
            return m_what_arg.c_str();
        }
 
    private:
        std::string m_what_arg;
    };
}  // namespace flyby