Continuation

A first-class continuation captured by `callcc`. Represents a resumable snapshot of execution state; invoking it re-enters the captured context. asMap

Returns a Map representation of the captured continuation state.

copy

Returns a deep copy of this continuation. The copy has an independent frame chain that can be invoked separately. Use this for multi-shot or delayed invocation patterns. Example: saved := nil callcc(block(cont, saved = cont copy // deep copy while frames are live "normal" )) // Later: saved invoke("delayed")

frameCount

Returns the number of frames in the captured continuation stack. Returns 0 if no state has been captured.

frameMessages

Returns a list of strings showing the current message at each frame in the captured continuation stack (from top to bottom).

frameStates

Returns a list of strings describing the state of each frame in the captured continuation stack (from top to bottom).

fromMap(aMap)

Restores a Continuation from a Map representation produced by asMap. Returns self with the restored continuation state.

invoke(value)

Invokes the continuation, restoring the captured execution state. The value argument becomes the result of the original callcc call. Continuations are one-shot: they can only be invoked once. Use copy to create a fresh continuation for multiple invocations.

isInvoked

Returns true if this continuation has been invoked.