stack {rlang} | R Documentation |
Get properties of the current or caller frame
Description
These accessors retrieve properties of frames on the call stack. The prefix indicates for which frame a property should be accessed:
From the current frame with
current_
accessors.From a calling frame with
caller_
accessors.From a matching frame with
frame_
accessors.
The suffix indicates which property to retrieve:
-
_fn
accessors return the function running in the frame. -
_call
accessors return the defused call with which the function running in the frame was invoked. -
_env
accessors return the execution environment of the function running in the frame.
Usage
current_call()
current_fn()
current_env()
caller_call(n = 1)
caller_fn(n = 1)
caller_env(n = 1)
frame_call(frame = caller_env())
frame_fn(frame = caller_env())
Arguments
n |
The number of callers to go back. |
frame |
A frame environment of a currently running function,
as returned by |
See Also
caller_env()
and current_env()