David T. Lewis uploaded a new version of Chronology-Core to project The Trunk: http://source.squeak.org/trunk/Chronology-Core-dtl.80.mcz
==================== Summary ====================
Name: Chronology-Core-dtl.80 Author: dtl Time: 19 May 2022, 12:03:05.720962 pm UUID: 1b1b97c4-bc35-408d-b548-f0d0376a0808 Ancestors: Chronology-Core-dtl.79
Change DateAndTime>>offset: to be compliant with the ANSI draft spec. The offset: method should answer an instance equivalent to the receiver, where equivalent means having the same UTC time.
Let #offset: adopt the prior behavior of #utcOffset: and let #utcOffset: be a compatibility synonym for #offset:. Add #asLocalAt: to the squeak protocol and let it implement the prior behavior of #offset: Change existing code and tests to use #asLocalAt: but otherwise retain existing behavior.
Issue reported at https://github.com/squeak-smalltalk/squeak-object-memory/issues/23
=============== Diff against Chronology-Core-dtl.79 ===============
Item was added: + ----- Method: DateAndTime>>asLocalAt: (in category 'squeak protocol') ----- + asLocalAt: anOffset + "Answer a DateAndTime for a different time zone offset that has the same + year, month, day, hour, minute, and second as this instance, and with + printString that matches except for time zone offset." + + | newOffset newMicros | + newOffset := anOffset asDuration asSeconds. + newMicros := localOffsetSeconds - newOffset * 1000000 + utcMicroseconds. + ^ self class utcMicroseconds: newMicros offset: newOffset + !
Item was changed: ----- Method: DateAndTime>>offset: (in category 'ansi protocol') ----- offset: anOffset + "Answer a <DateAndTime> equivalent to the receiver but with its local time + being offset from UTC by offset. - "Answer a DateAndTime for a different time zone offset that has the same - year, month, day, hour, minute, and second as this instance, and with - printString that matches except for time zone offset."
+ See asLocalAt: for the earlier behavior of this method." + + ^ self class + utcMicroseconds: utcMicroseconds + offset: anOffset asDuration asSeconds! - | newOffset newMicros | - newOffset := anOffset asDuration asSeconds. - newMicros := localOffsetSeconds - newOffset * 1000000 + utcMicroseconds. - ^ self class utcMicroseconds: newMicros offset: newOffset - !
Item was changed: ----- Method: DateAndTime>>utcOffset: (in category 'squeak protocol') ----- utcOffset: anOffset + "Compatiblity. Answer a DateAndTime equivalent to the receiver but offset from UTC by anOffset." + + ^ self offset: anOffset! - "Answer a DateAndTime equivalent to the receiver but offset from UTC by anOffset" - ^ self class - utcMicroseconds: utcMicroseconds - offset: anOffset asDuration asSeconds!
Item was changed: ----- Method: Timespan class>>current (in category 'squeak protocol') ----- current + ^ self starting: (DateAndTime now asLocalAt: self defaultOffset)! - ^ self starting: (DateAndTime now offset: self defaultOffset)!