IDL42 — Missing and inconsistently named annotations

Extensibility Annotation

Section 8.3.1.6 defines the @extensibility annotation as follows:

@annotation extensibility {
    enum ExtensibilityKind {
        FINAL,
        APPEND,
        MUTABLE
    };
    ExtensibililtyKind value;
};

However, section 7.2.3 of DDS-XTYPES specifies that the types of extensibility and mutability are the following:

• FINAL
• APPENDABLE
• MUTABLE

For consistency, the IDL specification should use "APPENDABLE" instead of "APPEND".

Shortcut Annotations

In Section 8.3.1 the IDL specification defines the annotations @final as a shorcut for @extensibility(FINAL) (Section 8.3.1.7) and @mutable as a shortcut for and @extensibility(MUTABLE) (Section 8.3.1.8).

For consistency, the IDL specification should introduce @appendable as a shortcut for @extensibility(APPENDABLE).

Default Literal Annotation

DDS-XTYPES Section 7.3.1.2.1.10 (Default Literal for Enumeration) defines the annotation @default_literal as:

@annotation default_literal {};

This is a general purpose annotation that marks an element of an enumeration as the default one for that enumeration.

For consistency with similar generic annotations it should be added to IDL section 8.3.2 (Group of Annotations Data Modeling)

Modify annotations as suggested in issue description

Perform the suggested modifications