Miranda protocol

From Erights

Every normal object responds to these miranda messages; miranda methods are provided for them.

• __conformTo(guard :Guard) :any
• __getAllegedType() :TypeDesc
• __getPropertySlot(property :String) :Slot
• __optSealedDispatch(brand :any) :any
• __optUncall() :Portrayal
• __order(verb :String, args :List) :Tuple[any, any]
• __printOn(out :TextWriter) :void
• __reactToLostClient(problem) :void
• __respondsTo(verb :String, arity :int) :Boolean
• __whenBroken(reactor) :void
• __whenMoreResolved(reactor) :void

Constraints on revision of this protocol

No version of the Miranda protocol shall introduce a Miranda message which has the same verb but different arity as another Miranda message. Rationale: This ensures that if a plumbing object forwards messages, adding leading/trailing arguments, it will not invoke a Miranda method of the forwarding target.

See also

• MirandaMethods class in E-on-Java
• CapTP protocol documentation, section “Helper Messages”