From 0c9640079a295e972d4c0a8857faeefcad2fc15d Mon Sep 17 00:00:00 2001
From: Matthijs Kooijman <m.kooijman@student.utwente.nl>
Date: Mon, 22 Jun 2009 12:57:20 +0200
Subject: [PATCH] Make the hw functions builtin operators instead of
 components.

---
 Generate.hs        | 13 ++++++++++++-
 GlobalNameTable.hs |  8 ++++++--
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/Generate.hs b/Generate.hs
index 2beacb8..26c0448 100644
--- a/Generate.hs
+++ b/Generate.hs
@@ -3,6 +3,17 @@ module Generate where
 import qualified ForSyDe.Backend.VHDL.AST as AST
 import Constants
 
+-- | Generate a binary operator application. The first argument should be a
+-- constructor from the AST.Expr type, e.g. AST.And.
+genExprOp2 :: (AST.Expr -> AST.Expr -> AST.Expr) -> [AST.Expr] -> AST.Expr
+genExprOp2 op [arg1, arg2] = op arg1 arg2
+genExprOp2 _ _ = error "Generate.genExprOp2 wrong number of argumetns"
+
+-- | Generate a unary operator application
+genExprOp1 :: (AST.Expr -> AST.Expr) -> [AST.Expr] -> AST.Expr
+genExprOp1 op [arg] = op arg
+genExprOp1 _ _ = error "Generate.genExprOp1 wrong number of argumetns"
+
 -- | Generate a function call from the Function Name and a list of expressions
 --   (its arguments)
 genExprFCall :: AST.VHDLId -> [AST.Expr] -> AST.Expr
@@ -154,4 +165,4 @@ genUnconsVectorFuns elemTM vectorTM  =
                                (AST.PrimName (AST.NAttribute $ 
                                   AST.AttribName (AST.NSimple vecPar) lengthId Nothing) 
                                                              AST.:-: AST.PrimLit "1"))
-    dropRet =  AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
\ No newline at end of file
+    dropRet =  AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
diff --git a/GlobalNameTable.hs b/GlobalNameTable.hs
index c860dcb..8c3faab 100644
--- a/GlobalNameTable.hs
+++ b/GlobalNameTable.hs
@@ -17,6 +17,10 @@ mkGlobalNameTable = Map.fromList
 
 globalNameTable :: NameTable
 globalNameTable = mkGlobalNameTable
-  [ ("!"    , (2, genExprFCall2L exId                           ) )
+  [ ("!"              , (2, genExprFCall2L exId                           ) )
   , ("head"           , (1, genExprFCall1L headId                         ) )
-  ]
\ No newline at end of file
+  , ("hwxor"          , (2, genExprOp2 AST.Xor                            ) )
+  , ("hwand"          , (2, genExprOp2 AST.And                            ) )
+  , ("hwor"           , (2, genExprOp2 AST.And                            ) )
+  , ("hwnot"          , (1, genExprOp1 AST.Not                            ) )
+  ]
-- 
2.30.2