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Define builtin behaviours in runPrimitive.

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This commit is contained in:
Rob Rix 2018-05-28 10:58:27 -04:00
parent 54988fa3df
commit 22e01c9ed3
1 changed files with 3 additions and 2 deletions
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5
src/Control/Abstract/Primitive.hs
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@ -78,5 +78,6 @@ prim builtin params = send (Prim builtin params)
data Primitive value result where data Primitive value result where
Prim :: Builtin -> [value] -> Primitive value value Prim :: Builtin -> [value] -> Primitive value value
runPrimitive :: (Builtin -> [value] -> Evaluator location value effects value) -> Evaluator location value (Primitive value ': effects) a -> Evaluator location value effects a runPrimitive :: (AbstractValue location value effects, Member Trace effects) => Evaluator location value (Primitive value ': effects) a -> Evaluator location value effects a
runPrimitive handler = interpret (\ (Prim builtin params) -> handler builtin params) runPrimitive = interpret (\ (Prim builtin params) -> case builtin of
Print -> traverse (asString >=> trace . unpack) params >> unit)