cleavir stealth mixins

It is sometimes useful to add mixins to a class without altering its definition. For example, this can be used to add information to BIR objects particular to a client or extension, so that the general BIR definitions do not need to be aware of the client/extension code. The cleavir-stealth-mixins facility provides a small interface to do so reliably.

define-stealth-mixin defines a new class and makes it a superclass of an existing "victim" class. This new class is set up so that it will remain a superclass even if the definition of the victim class is reevaluated.

Original hack by Gilbert Baumann.

System Information

Definition Index

• CLEAVIR-STEALTH-MIXINS

  No documentation provided.

  • EXTERNAL FUNCTION

    ADD-MIXIN

    • MIXIN-NAME
    • VICTIM-CLASS

    Source

    No documentation provided.
  • EXTERNAL MACRO

    CLASS-STEALTH-MIXINS

    • CLASS

    Source

    No documentation provided.
  • EXTERNAL MACRO

    DEFINE-STEALTH-MIXIN

    • NAME
    • SUPER-CLASSES
    • VICTIM-CLASS-DESIG
    • &REST
    • FOR-DEFCLASS

    Source

    Like DEFCLASS but adds the newly defined class to the super classes
    of 'victim-class'.