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Add helper function to get the path of the current module

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Timothy Clem 2018-03-29 14:07:42 -07:00
parent 4b751034a5
commit edc2d02559
1 changed files with 4 additions and 0 deletions
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4
src/Control/Abstract/Evaluator.hs
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@ -1,6 +1,7 @@
{-# LANGUAGE ConstrainedClassMethods, DataKinds, FunctionalDependencies, TypeFamilies, UndecidableInstances #-}
module Control.Abstract.Evaluator
( MonadEvaluator(..)
, currentModuleFilePath
, MonadEnvironment(..)
, modifyEnv
, modifyExports
@ -60,6 +61,9 @@ class ( MonadControl term m
-- With great power comes great responsibility. If you 'evaluateModule' any of these, you probably deserve what you get.
askModuleStack :: m [Module term]
-- | Get the path of the current module.
currentModuleFilePath :: (MonadEvaluator term value m) => m FilePath
currentModuleFilePath = modulePath . head <$> askModuleStack
-- | A 'Monad' abstracting local and global environments.
class Monad m => MonadEnvironment value m | m -> value where