Merge branch 'cλash' of http://git.stderr.nl/matthijs/projects/master-project

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

diff --git a/CoreTools.hs b/CoreTools.hs
index 1e65b0d6b0b95da582669c5774366e750bbc4c76..a8dce3fab43ac345762307704a27b6d1e31592b3 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


@@ -46,7 +51,7 @@ eval_tfp_int ty =
     core <- toCore modules expr
     execCore core 
 
     core <- toCore modules expr
     execCore core 
 

--- | Get the length of a SizedWord type
+-- | Get the width of a SizedWord type

 sized_word_len :: Type.Type -> Int
 sized_word_len ty =
   eval_tfp_int len
 sized_word_len :: Type.Type -> Int
 sized_word_len ty =
   eval_tfp_int len


@@ -54,3 +59,43 @@ sized_word_len ty =
     (tycon, args) = Type.splitTyConApp ty
     [len] = args
 
     (tycon, args) = Type.splitTyConApp ty
     [len] = args
 

+-- | Evaluate a core Type representing type level int from the TypeLevel
+-- library to a real int.
+-- eval_type_level_int :: Type.Type -> Int
+-- eval_type_level_int ty =
+--   unsafeRunGhc $ do
+--     -- Automatically import modules for any fully qualified identifiers
+--     setDynFlag DynFlags.Opt_ImplicitImportQualified
+-- 
+--     let to_int_name = mkRdrName "Data.TypeLevel.Num.Sets" "toInt"
+--     let to_int = SrcLoc.noLoc $ HsExpr.HsVar to_int_name
+--     let undef = hsTypedUndef $ coreToHsType ty
+--     let app = HsExpr.HsApp (to_int) (undef)
+-- 
+--     core <- toCore [] app
+--     execCore core 
+
+-- | Get the length of a FSVec type
+tfvec_len :: Type.Type -> Int
+tfvec_len ty =
+  eval_tfp_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