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Define a helper to dereference qualified names in values.

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This commit is contained in:
Rob Rix 2018-05-10 09:55:11 -04:00
parent 821691549e
commit 30a85b576d
1 changed files with 11 additions and 1 deletions
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12
test/SpecHelpers.hs
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@ -6,6 +6,7 @@ module SpecHelpers
, testEvaluating
, ns
, addr
, derefQName
, verbatim
, Verbatim(..)
) where
@ -15,17 +16,20 @@ import Analysis.Abstract.Evaluating as X (EvaluatingState(..))
import Control.Abstract.Addressable
import Control.Abstract.Value
import Control.Effect as X (runIgnoringTraces)
import Control.Monad ((>=>))
import Data.Abstract.Address as X
import Data.Abstract.Environment as Env
import Data.Abstract.Evaluatable
import Data.Abstract.FreeVariables as X hiding (dropExtension)
import Data.Abstract.Heap as X
import Data.Abstract.ModuleTable as X hiding (lookup)
import Data.Abstract.Value (Namespace(..), Value, ValueError, injValue, runValueError)
import Data.Abstract.Value (Namespace(..), Value, ValueError, injValue, prjValue, runValueError)
import Data.Bifunctor (first)
import Data.Blob as X
import Data.File as X
import Data.Functor.Listable as X
import Data.Language as X
import Data.List.NonEmpty as X (NonEmpty(..))
import Data.Output as X
import Data.Range as X
import Data.Record as X
@ -85,6 +89,12 @@ testEvaluating
ns n = Just . Latest . Just . injValue . Namespace n
addr = Address . Precise
derefQName :: Heap Precise (Value Precise) -> NonEmpty Name -> Environment Precise (Value Precise) -> Maybe (Value Precise)
derefQName heap = go
where go (n1 :| ns) env = Env.lookup n1 env >>= flip heapLookup heap >>= unLatest >>= case ns of
[] -> Just
(n2 : ns) -> fmap namespaceScope . prjValue @(Namespace Precise) >=> go (n2 :| ns)
newtype Verbatim = Verbatim ByteString
deriving (Eq)