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Only attempt error recovery at nodes.

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This commit is contained in:
Rob Rix 2017-08-06 08:35:06 -04:00
parent 04a9b2dc25
commit b591c63c5d
1 changed files with 5 additions and 4 deletions
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9
src/Data/Syntax/Assignment.hs
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@ -287,6 +287,10 @@ runAssignment toNode source = (\ assignment state -> disamb Left (Right . minimu
(a, state') <- go child state { stateNodes = toList node } >>= requireExhaustive
yield a (advance state' { stateNodes = stateNodes })
Choose _ choices _ | symbol <- nodeSymbol (toNode node), inRange (bounds choices) symbol, Just choice <- choices ! symbol -> yield choice state
Catch during handler -> go during state `catchError` (\ (err, state') -> if state == state' then
go (handler err) state { stateErrorCounter = succ stateErrorCounter }
else
None (err, state')) >>= uncurry yield
_ -> anywhere (Just node)
anywhere node = case assignment of
@ -297,10 +301,7 @@ runAssignment toNode source = (\ assignment state -> disamb Left (Right . minimu
None (err, state') -> if state == state' then next else None (err, state')
Some as -> Some as) (None (makeError node, state)) as
Throw e -> None (e, state)
Catch during handler -> go during state `catchError` (\ (err, state') -> if state == state' then
go (handler err) state { stateErrorCounter = succ stateErrorCounter }
else
None (err, state')) >>= uncurry yield
Catch during _ -> go during state >>= uncurry yield
Choose{} -> None (makeError node, state)
Project{} -> None (makeError node, state)
Children{} -> None (makeError node, state)