with_abort()
promotes conditions as if they were thrown with
abort()
. These errors embed a backtrace. They are
particularly suitable to be set as parent errors (see parent
argument of abort()
).
with_abort(expr, classes = "error")
expr | An expression run in a context where errors are promoted to rlang errors. |
---|---|
classes | Character vector of condition classes that should be promoted to rlang errors. |
with_abort()
installs a calling handler for errors and
rethrows non-rlang errors with abort()
. However, error handlers
installed within with_abort()
have priority. For this reason,
you should use tryCatch()
and exiting handlers outside
with_abort()
rather than inside.
# with_abort() automatically casts simple errors thrown by stop() # to rlang errors. It is is handy for rethrowing low level # errors. The backtraces are then segmented between the low level # and high level contexts. f <- function() g() g <- function() stop("Low level error") high_level <- function() { with_handlers( with_abort(f()), error = ~ abort("High level error", parent = .) ) }