Add is_lam and is_fun predicates.

[matthijs/master-project/cλash.git] / CoreTools.hs

diff --git a/CoreTools.hs b/CoreTools.hs
index 06b7a62388a4c00446737e026bed7e03bf974d4b..3dfaf5016cedb0ede442564d2e22452d9cc16e37 100644 (file)
--- a/CoreTools.hs
+++ b/CoreTools.hs
@@ -11,11 +11,16 @@ import qualified HsExpr
 import qualified HsTypes
 import qualified HsBinds
 import qualified RdrName
 import qualified HsTypes
 import qualified HsBinds
 import qualified RdrName

+import qualified Name

 import qualified OccName
 import qualified TysWiredIn
 import qualified Bag
 import qualified DynFlags
 import qualified SrcLoc
 import qualified OccName
 import qualified TysWiredIn
 import qualified Bag
 import qualified DynFlags
 import qualified SrcLoc

+import qualified CoreSyn
+import qualified Var
+import qualified Unique
+import qualified CoreUtils

 
 import GhcTools
 import HsTools
 
 import GhcTools
 import HsTools


@@ -69,3 +74,28 @@ eval_type_level_int ty =
 
     core <- toCore [] app
     execCore core 
 
     core <- toCore [] app
     execCore core 

+
+-- | Get the length of a FSVec type
+fsvec_len :: Type.Type -> Int
+fsvec_len ty =
+  eval_type_level_int len
+  where 
+    (tycon, args) = Type.splitTyConApp ty
+    [len, el_ty] = args
+
+-- Is this a wild binder?
+is_wild :: CoreSyn.CoreBndr -> Bool
+-- wild binders have a particular unique, that we copied from MkCore.lhs to
+-- here. However, this comparison didn't work, so we'll just check the
+-- occstring for now... TODO
+--(Var.varUnique bndr) == (Unique.mkBuiltinUnique 1)
+is_wild bndr = "wild" == (OccName.occNameString . Name.nameOccName . Var.varName) bndr
+
+-- Is the given core expression a lambda abstraction?
+is_lam :: CoreSyn.CoreExpr -> Bool
+is_lam (CoreSyn.Lam _ _) = True
+is_lam _ = False
+
+-- Is the given core expression of a function type?
+is_fun :: CoreSyn.CoreExpr -> Bool
+is_fun = Type.isFunTy . CoreUtils.exprType