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symbol constructs Jump nodes.

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Rob Rix 2017-08-31 12:33:24 -04:00
parent 3e5953c0c2
commit 38ec3182e8
1 changed files with 1 additions and 1 deletions
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src/Data/Syntax/Assignment.hs
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@ -167,7 +167,7 @@ currentNode = tracing CurrentNode `Then` return
-- | Zero-width match of a node with the given symbol, producing the current node’s location.
symbol :: (Bounded grammar, Ix grammar, HasCallStack) => grammar -> Assignment ast grammar (Record Location)
symbol s = tracing (Choose [s] (IntMap.singleton (toIndex s) location) Nothing) `Then` id
symbol s = tracing (Jump [s] (array (s, s) [(s, Just location)]) Nothing) `Then` id
-- | A rule to produce a node’s source as a ByteString.
source :: HasCallStack => Assignment ast grammar ByteString