diff options
| -rw-r--r-- | modules/core/c++/error.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/modules/core/c++/error.h b/modules/core/c++/error.h index e816734..581782d 100644 --- a/modules/core/c++/error.h +++ b/modules/core/c++/error.h @@ -19,10 +19,22 @@ namespace saw { */ class error { public: + /** + * Type alias + */ using code = uint32_t; private: + /** + * Type representing the error code used to distinguish the different error types + */ code error_code_; + /** + * Helper variable for ease of checking if it's a critical error. + */ bool is_critical_; + /** + * Member holding the message. It's a variant for edge cases where we are out of memory. + */ std::variant<std::string_view, std::string> error_message_; public: @@ -34,13 +46,29 @@ public: error &operator=(error &&) = default; + /** + * Returns a string view to the message + */ const std::string_view get_message() const; + /** + * Returns a string view which describes which error this is. + */ const std::string_view get_category() const; + /** + * Checks if it's an error at all, since 0 is reserved for no error. + */ bool failed() const; + /** + * Checks if the error is critical. + */ bool is_critical() const; + + /** + * Checks if the error is recoverable. + */ bool is_recoverable() const; /** @@ -48,17 +76,29 @@ public: */ error copy_error() const; + /** + * Return the id. + */ code get_id() const; + /** + * Provide an error struct and check if it matches the type + */ template<typename T> bool is_type() const; }; +/** + * Class which is basically a variant. Replaces exceptions + */ template<typename T> class error_or; namespace impl { +/** + * Internal registry for all error types. Is generated dynamically. + */ class error_registry { private: struct error_info { @@ -104,6 +144,13 @@ error::code get_template_id(){ } } +/** + * Helper function since changing returns between void_t{} and make_error<...>() is a bit annoying. + */ +void_t make_void(){ + return {}; +} + template<typename T> error make_error(const std::string_view& generic){ error::code id = impl::get_template_id<T>(); |