mirror of
https://github.com/urbit/shrub.git
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114 lines
5.0 KiB
Plaintext
114 lines
5.0 KiB
Plaintext
::
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::::
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::
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/- *story
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:- %say
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|= $: [now=@da eny=@uvJ bec=beak]
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[[syd=desk ~] ~]
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==
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|^
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=/ our p.bec
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=/ cas `case`[%da now]
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=/ tale .^(story %cx /(scot %p our)/[syd]/(scot %da now)/story)
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=/ current-tako .^(tako:clay %cs /(scot %p our)/[syd]/(scot cas)/tako/~)
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=/ current-yaki .^(yaki:clay %cs /(scot %p our)/base/(scot cas)/yaki/(scot %uv current-tako))
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:- %tang
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(story-log current-yaki tale)
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::
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++ msg-from-commit
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|= [commit=yaki:clay tale=story]
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^- (unit cord)
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=/ proses (~(get by tale) r.commit)
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?~ proses ~
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=/ prose-list ~(tap in u.proses)
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:: TODO signal conflict
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=/ prose-first (snag 0 prose-list)
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=/ title title:prose-first
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=/ body body:prose-first
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%- some
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(crip "commit: {<`@uv`r.commit>}\0atitle: {<title>}\0abody:\0a{<body>}")
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::::
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:: Remarks:
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::
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:: There are two recursions in the log file:
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:: 1. the outer loop, `commit-loop` which threads downwards into each commit by ancestor
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:: 2. the inner loop, `ancestor-loop`, which threads left-to-right on reverse-ancestors
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::::
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++ story-log
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|= [current-commit=yaki:clay tale=story]
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^- tang
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=/ our p.bec
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=/ cas=case [%da now]
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%- flop
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%- head
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=| state=[result=tang mergebase=(unit tako:clay)]
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|-
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^- _state
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=* commit-loop $
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=/ reverse-ancestors (flop p.current-commit)
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|-
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=* ancestor-loop $
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?- reverse-ancestors
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~
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:: stop here and return the current message
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=/ msg=(unit cord) (msg-from-commit current-commit tale)
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[?~(msg result.state [u.msg result.state]) mergebase=~]
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::
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[tako:clay ~]
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=/ parent=tako:clay i.reverse-ancestors
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=/ parent-commit .^(yaki:clay %cs /(scot %p our)/base/(scot cas)/yaki/(scot %uv parent))
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=/ msg (msg-from-commit current-commit tale)
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:: proper logic is: if there is a mergebase and the current commit is the mergebase, stop. otherwise, continue
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?: ?&(?=(^ mergebase.state) =(u.mergebase.state r.current-commit))
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:: stop here and clear mergebase. we skip adding the mergebase's msg itself because it will be added through the other branch
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[result=result.state mergebase=~]
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commit-loop(current-commit parent-commit, state [?~(msg result.state [u.msg result.state]) mergebase.state])
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::
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[tako:clay tako:clay ~]
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::
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:: mainline: ultimate base chain
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:: nextline: relative mainline
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:: sideline: side-chain, featurebranch
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::
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:: From the context of e, commit c is on its relative mainline, or nowline, while commit d is on its sideline
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:: %base a--b-------------X :: mainline
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:: %new \--c------e--/ :: nowline
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:: %new2 \--d--/ :: sideline
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::
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::
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~& "in merge commit"
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=/ sideline=tako:clay i.reverse-ancestors
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=/ mainline=tako:clay i.t.reverse-ancestors
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=/ mergebases .^((list tako:clay) %cs /(scot %p our)/base/(scot cas)/base-tako/(scot %uv mainline)/(scot %uv sideline))
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=/ next-mergebase=(unit tako:clay) ?~(mergebases ~ (some i.mergebases)) :: take the first valid mergebase (by convention) if exists, else none
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=/ sideline-commit=yaki:clay .^(yaki:clay %cs /(scot %p our)/base/(scot cas)/yaki/(scot %uv sideline))
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=/ mainline-commit=yaki:clay .^(yaki:clay %cs /(scot %p our)/base/(scot cas)/yaki/(scot %uv mainline))
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=/ msg=(unit cord) (msg-from-commit current-commit tale)
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::
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:: 1 - process current commit
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:: 2 - recur and queue processing on all commits on the sideline
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:: 3 - recur and queue processing on all commits on the mainline
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::
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:: Because mainline messages are cons'd to result last, they are
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:: (by definition) towards the less recent side of the (resulting, flopped) list
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::
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=. state [result=?~(msg result.state [u.msg result.state]) mergebase=next-mergebase] :: 1
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=. state commit-loop(current-commit sideline-commit) :: 2
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=. state commit-loop(current-commit mainline-commit) :: 3
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state
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::
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[tako:clay tako:clay tako:clay *]
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~& "in 3+ ancestor commit"
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:: take the first two (sideline/mainline). calculate that mergebase
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:: recur through sideline (state-b). but instead of state-c line for mainline,
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=/ sideline=tako:clay i.reverse-ancestors
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=/ nowline=tako:clay i.t.reverse-ancestors
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=/ mergebases .^((list tako:clay) %cs /(scot %p our)/base/(scot cas)/base-tako/(scot %uv nowline)/(scot %uv sideline))
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=/ next-mergebase=(unit tako:clay) ?~(mergebases ~ (some i.mergebases)) :: take the first valid mergebase (by convention) if exists, else none
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=/ sideline-commit=yaki:clay .^(yaki:clay %cs /(scot %p our)/base/(scot cas)/yaki/(scot %uv sideline))
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=. mergebase.state next-mergebase
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=. state commit-loop(current-commit sideline-commit)
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=. state ancestor-loop(reverse-ancestors t.reverse-ancestors)
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state
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==
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-- |