From: Christiaan Baaij <christiaan.baaij@gmail.com>
Date: Wed, 24 Jun 2009 10:19:30 +0000 (+0200)
Subject: Added builtin zipwith function
X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;h=65c54e15c4ef306305eca6f41b19731a6a1f6b9e;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git

Added builtin zipwith function
---

diff --git a/Generate.hs b/Generate.hs
index 264f4e3..692d912 100644
--- a/Generate.hs
+++ b/Generate.hs
@@ -48,10 +48,10 @@ genMapCall entity [arg, res] = genSm
     genScheme   = AST.ForGn nPar range
     -- Get the entity name and port names
     entity_id   = ent_id entity
-    argport     = map (Monad.liftM fst) (ent_args entity)
+    argports   = map (Monad.liftM fst) (ent_args entity)
     resport     = (Monad.liftM fst) (ent_res entity)
     -- Assign the ports
-    inport      = mkAssocElemIndexed (head argport) (varToString arg) nPar
+    inport      = mkAssocElemIndexed (argports!!0) (varToString arg) nPar
     outport     = mkAssocElemIndexed resport (varToString res) nPar
     clk_port    = mkAssocElem (Just $ mkVHDLExtId "clk") "clk"
     portassigns = Maybe.catMaybes [inport,outport,clk_port]
@@ -60,6 +60,34 @@ genMapCall entity [arg, res] = genSm
     compins     = mkComponentInst mapLabel entity_id portassigns
     -- Return the generate functions
     genSm       = AST.GenerateSm label genScheme [] [compins]
+    
+genZipWithCall ::
+  Entity
+  -> [CoreSyn.CoreBndr]
+  -> AST.GenerateSm
+genZipWithCall entity [arg1, arg2, res] = genSm
+  where
+    -- Setup the generate scheme
+    len         = (tfvec_len . Var.varType) res
+    label       = mkVHDLExtId ("zipWithVector" ++ (varToString res))
+    nPar        = AST.unsafeVHDLBasicId "n"
+    range       = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
+    genScheme   = AST.ForGn nPar range
+    -- Get the entity name and port names
+    entity_id   = ent_id entity
+    argports    = map (Monad.liftM fst) (ent_args entity)
+    resport     = (Monad.liftM fst) (ent_res entity)
+    -- Assign the ports
+    inport1     = mkAssocElemIndexed (argports!!0) (varToString arg1) nPar
+    inport2     = mkAssocElemIndexed (argports!!1) (varToString arg2) nPar 
+    outport     = mkAssocElemIndexed resport (varToString res) nPar
+    clk_port    = mkAssocElem (Just $ mkVHDLExtId "clk") "clk"
+    portassigns = Maybe.catMaybes [inport1,inport2,outport,clk_port]
+    -- Generate the portmap
+    mapLabel    = "zipWith" ++ (AST.fromVHDLId entity_id)
+    compins     = mkComponentInst mapLabel entity_id portassigns
+    -- Return the generate functions
+    genSm       = AST.GenerateSm label genScheme [] [compins]
 
 genUnconsVectorFuns :: AST.TypeMark -- ^ type of the vector elements
                     -> AST.TypeMark -- ^ type of the vector
diff --git a/GlobalNameTable.hs b/GlobalNameTable.hs
index 45eed89..aa74628 100644
--- a/GlobalNameTable.hs
+++ b/GlobalNameTable.hs
@@ -27,6 +27,7 @@ globalNameTable = mkGlobalNameTable
   , ("drop"           , (2, Left $ genExprFCall dropId                    ) )
   , ("+>"             , (2, Left $ genExprFCall plusgtId                  ) )
   , ("map"            , (2, Right $ genMapCall                            ) )
+  , ("zipWith"        , (3, Right $ genZipWithCall                        ) )
   , ("empty"          , (0, Left $ genExprFCall emptyId                   ) )
   , ("singleton"      , (1, Left $ genExprFCall singletonId               ) )
   , ("copy"           , (2, Left $ genExprFCall copyId                    ) )