import qualified CoreUtils
import qualified CoreFVs
import qualified Literal
+import qualified MkCore
-- Local imports
import CLasH.Translator.TranslatorTypes
import CLasH.Utils.HsTools
import CLasH.Utils.Pretty
+-- | A single binding, used as a shortcut to simplify type signatures.
+type Binding = (CoreSyn.CoreBndr, CoreSyn.CoreExpr)
+
-- | Evaluate a core Type representing type level int from the tfp
-- library to a real int.
eval_tfp_int :: HscTypes.HscEnv -> Type.Type -> Int
Just ty -> isStateType ty
+-- | Flattens nested non-recursive lets into a single list of bindings. The
+-- expression passed does not have to be a let expression, if it isn't an
+-- empty list of bindings is returned.
+flattenLets ::
+ CoreSyn.CoreExpr -- ^ The expression to flatten.
+ -> ([Binding], CoreSyn.CoreExpr) -- ^ The bindings and resulting expression.
+flattenLets (CoreSyn.Let (CoreSyn.NonRec bndr expr) res) =
+ ((bndr, expr):bindings, res')
+ where
+ -- Recursively flatten the contained expression
+ (bindings, res') = flattenLets res
+flattenLets expr = ([], expr)
+
+-- | Create bunch of nested non-recursive let expressions from the given
+-- bindings. The first binding is bound at the highest level (and thus
+-- available in all other bindings).
+mkNonRecLets :: [Binding] -> CoreSyn.CoreExpr -> CoreSyn.CoreExpr
+mkNonRecLets bindings expr = MkCore.mkCoreLets binds expr
+ where
+ binds = map (uncurry CoreSyn.NonRec) bindings
+
-- | A class of things that (optionally) have a core Type. The type is
-- optional, since Type expressions don't have a type themselves.
class TypedThing t where