io.github.evenmoreirrelevance.classy.core — io.github.evenmoreirrelevance/classy 0.2.3-beta

defsubclass clj macro

(defsubclass relname [base & ctor-fn-targets] fields & opts+specs)

Defines a subclass of supcls with the given added fields and overridden methods. all usual options apply and the mutable fields can still be set in the bodies as per usual. The class will implement all the constructors of the base, with the extra fields added as head parameters; if any ctor-fn-targets are specified, a ->relname fn will be defined as well which forwards to the appropriate ctor; it is recommended that if none are listed, a custom ctor fn is still defined for the sake of repl-friendliness.

Unlike -say- a Proxy output, the output class can be inherited from with no friction if the ::extensible? option is specified to be truthy; however, it's still discouraged.

instance clj macro

(instance [supcls & ctor-args] & reify-syntax)

Evaluates to an instance of supcls initialized with ctor-args, which can override its own methods like reify does and implement more interfaces. Super calls to public or protected methods are available via the super-call macro. Note that unlike in reify, the output instance isn't an IObj by default.

Note that the class of the output is left unspecified, so it mustn't be relied upon.

super-call clj macro

(super-call [m targ & args :as wrapped])

Akin to calling a super method in Java. Behavior for calls outside of instance and defsubclass impl bodies is unspecified.