Issues for Ada 2003 Revision Task Force

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Issue 3639: The Ada mapping of the Interface Repository. Jira Issue ADA-1
Issue 6344: Ada Mapping of Sequences Too Heavy Jira Issue ADA-2

Issue 3639: The Ada mapping of the Interface Repository. (ada-rtf)

Summary: Standardisation of the declaration of the Ada units mapping the          Interface Repository Specification    Description:  	The mapping of the IDL specification of the IR in Ada implies  	the creation of forward declarations of interfaces (the  	"IDLType" interface for instance). Those should be mapped in  	Ada to subpackages of CORBA using the CORBA.Forward  	package. This leads to a circular dependency in the new CORBA  	package.    Proposed solution:          These interfaces cannot be mapped as instanciations of          CORBA.Forward that are child packages of CORBA, because          they are subsequently used in the definition of record          types in the declaration of CORBA (eg interface IDLType          as a component of StructMember).    	We therefore propose the following addition to the standard          mapping definition for module CORBA:            "The types defined within module CORBA by the Interface          Repository Specification (formal/99-10-07, p10-56 to 10-68),          except the TypeCode and ORB interfaces, shall be mapped to a          (child) library package CORBA.Repository_Root."     	A comment at the end of the declaration of the package CORBA  	implies that this is probably the intent of the author to  	provide such a standard child unit.     	We further propose that the contents of the declaration of  	child package CORBA.Repository_Root be standardized. We will  	provide a proposed specification on request.  

These interfaces cannot be mapped as instanciations of CORBA.Forward that  are child packages of CORBA, because they are subsequently used in the  definition of record types in the declaration of CORBA (eg interface IDLType as a  component of StructMember).  We therefore propose the following addition to the standard mapping definition  for module CORBA:  "The types defined within module CORBA by the Interface Repository  Specification (formal/99-10-07, p10-56 to 10-68), except the TypeCode and ORB  interfaces, shall be mapped to a (child) library package  CORBA.Repository_Root."  A comment at the end of the declaration of the package CORBA implies that this  is probably the intent of the author to provide such a standard child unit.  We further propose that the contents of the declaration of child package  CORBA.Repository_Root be standardized. We will provide a proposed  specification on request.  Discussion:  Deferred due to lack of time.  Disposition: Deferred

The current mapping of IDL sequences to the Ada language results in a instantiation of a defined generic package. However, each instantiation results in roughly 150K of additional object code. This is excessive for embedded systems, especially if multiple sequences are used in an application. A lightweight alternative, such as the mapping defined for C++, should be defined.    

Deferred due to lack of time.  Disposition: Deferred