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deprecate system.onRaise; fixes #1652

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Araq 2018-09-03 09:22:19 +02:00
commit 7ace82440f
1 changed files with 4 additions and 1 deletions
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lib/system.nim
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@ -3386,12 +3386,15 @@ when not defined(JS): #and not defined(nimscript):
var e = getCurrentException() var e = getCurrentException()
return if e == nil: "" else: e.msg return if e == nil: "" else: e.msg
proc onRaise*(action: proc(e: ref Exception): bool{.closure.}) = proc onRaise*(action: proc(e: ref Exception): bool{.closure.}) {.deprecated.} =
## can be used in a ``try`` statement to setup a Lisp-like ## can be used in a ``try`` statement to setup a Lisp-like
## `condition system`:idx:\: This prevents the 'raise' statement to ## `condition system`:idx:\: This prevents the 'raise' statement to
## raise an exception but instead calls ``action``. ## raise an exception but instead calls ``action``.
## If ``action`` returns false, the exception has been handled and ## If ``action`` returns false, the exception has been handled and
## does not propagate further through the call stack. ## does not propagate further through the call stack.
##
## *Deprecated since version 0.18.1*: No good usages of this
## feature are known.
if not isNil(excHandler): if not isNil(excHandler):
excHandler.hasRaiseAction = true excHandler.hasRaiseAction = true
excHandler.raiseAction = action excHandler.raiseAction = action