5 commits

Author	SHA1	Message	Date
Martin von Zweigbergk	0219dbb359	transaction: make evolution_mut() return a mutable reference ... This includes fixing a lifetime bound on `MutableEvolution` that was reversed.	2020-12-23 17:32:32 -08:00
Martin von Zweigbergk	110c083e78	evolution: don't wrap State in Mutex<Option<>>	2020-12-23 17:32:31 -08:00
Martin von Zweigbergk	fce5ec21f6	evolution: make MutableEvolution own its state ... Before this commit, it could share its state with the `ReadonlyEvolution`. That makes no sense when the state is modified, and would crash if we tried to get a mutable reference to the state. It only "worked" because the state is not yet updated within a transaction (a known bug). I'm about to fix that bug, so we need to fix the ownership, which this commit does.	2020-12-23 17:32:31 -08:00
Martin von Zweigbergk	648ec34a4c	evolution: move shared implementation onto the State struct ... There was some duplicate between `ReadonlyEvolution` and `MutableEvolution` that could be extracted. It will help to have this shared code on the `State` object for the next few patches.	2020-12-23 17:32:31 -08:00
Martin von Zweigbergk	6b1427cb46	import commit 0f15be02bf4012c116636913562691a0aaa7aed2 from my hg repo	2020-12-12 00:23:38 -08:00