[squeak-dev] The Trunk: Kernel-tonyg.1212.mcz

commits at source.squeak.org commits at source.squeak.org
Wed Jan 30 17:27:32 UTC 2019


Tony Garnock-Jones uploaded a new version of Kernel to project The Trunk:
http://source.squeak.org/trunk/Kernel-tonyg.1212.mcz

==================== Summary ====================

Name: Kernel-tonyg.1212
Author: tonyg
Time: 30 January 2019, 5:20:04.609071 pm
UUID: 03bd0e4c-76d2-4be6-a7e1-58414c7fab52
Ancestors: Kernel-mt.1211

Improve promise resolution error handling via #fulfillWith:.

=============== Diff against Kernel-mt.1211 ===============

Item was added:
+ ----- Method: Promise>>fulfillWith: (in category 'resolving') -----
+ fulfillWith: aBlock
+ 	self fulfillWith: aBlock passErrors: rejecters isEmpty!

Item was added:
+ ----- Method: Promise>>fulfillWith:passErrors: (in category 'resolving') -----
+ fulfillWith: aBlock passErrors: aBoolean
+ 	"Evaluate aBlock. If it signals an exception, reject this promise with the exception
+ 	as the argument; if it returns a value [or another Promise], resolve this promise
+ 	with the result.
+ 	
+ 	If aBoolean is true, and an exception is signaled, it is passed out to the caller.
+ 	If aBoolean is false, signaled exceptions are considered handled after the promise
+ 	has been rejected."
+ 	[ self resolveWith: aBlock value ]
+ 		on: Exception
+ 		do: [ :ex |
+ 			(ex isKindOf: Halt)
+ 				ifTrue: [ex pass]
+ 				ifFalse: [
+ 					self rejectWith: ex.
+ 					aBoolean ifTrue: [ ex pass ] ]]!



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