--------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------- -- 4 package Asis.Errors --------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------- package Asis.Errors is --------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------- -- -- ASIS reports all operational errors by raising an exception. Whenever an -- ASIS implementation raises one of the exceptions declared in package -- Asis.Exceptions, it will previously have set the values returned by the -- Status and Diagnosis queries to indicate the cause of the error. The -- possible values for Status are indicated in the definition of Error_Kinds -- below, with suggestions for the associated contents of the Diagnosis -- string as a comment. -- -- The Diagnosis and Status queries are provided in the Asis.Implementation -- package to supply more information about the reasons for raising any -- exception. -- -- ASIS applications are encouraged to follow this same convention whenever -- they explicitly raise any ASIS exception--always record a Status and -- Diagnosis prior to raising the exception. --------------------------------------------------------------------------------------- -- 4.1 type Error_Kinds --------------------------------------------------------------------------------------- -- This enumeration type describes the various kinds of errors. -- type Error_Kinds is ( Not_An_Error, -- No error is presently recorded Value_Error, -- Routine argument value invalid Initialization_Error, -- ASIS is uninitialized Environment_Error, -- ASIS could not initialize Parameter_Error, -- Bad Parameter given to Initialize Capacity_Error, -- Implementation overloaded Name_Error, -- Context/unit not found Use_Error, -- Context/unit not use/open-able Data_Error, -- Context/unit bad/invalid/corrupt Text_Error, -- The program text cannot be located Storage_Error, -- Storage_Error suppressed Obsolete_Reference_Error, -- Argument or result is invalid due to -- and inconsistent compilation unit Unhandled_Exception_Error, -- Unexpected exception suppressed Not_Implemented_Error, -- Functionality not implemented Internal_Error); -- Implementation internal failure --------------------------------------------------------------------------------------- end Asis.Errors;