+module Generate where
+
+import qualified ForSyDe.Backend.VHDL.AST as AST
+import Constants
+
+-- | Generate a function call from the Function Name and a list of expressions
+-- (its arguments)
+genExprFCall :: AST.VHDLId -> [AST.Expr] -> AST.Expr
+genExprFCall fName args =
+ AST.PrimFCall $ AST.FCall (AST.NSimple fName) $
+ map (\exp -> Nothing AST.:=>: AST.ADExpr exp) args
+
+-- | List version of genExprFCall1
+genExprFCall1L :: AST.VHDLId -> [AST.Expr] -> AST.Expr
+genExprFCall1L fName [arg] = genExprFCall fName [arg]
+genExprFCall1L _ _ = error "Generate.genExprFCall1L incorrect length"
+
+-- | List version of genExprFCall2
+genExprFCall2L :: AST.VHDLId -> [AST.Expr] -> AST.Expr
+genExprFCall2L fName [arg1, arg2] = genExprFCall fName [arg1,arg2]
+genExprFCall2L _ _ = error "Generate.genExprFCall2L incorrect length"
+
+genUnconsVectorFuns :: AST.TypeMark -- ^ type of the vector elements
+ -> AST.TypeMark -- ^ type of the vector
+ -> [AST.SubProgBody]
+genUnconsVectorFuns elemTM vectorTM =
+ [ AST.SubProgBody exSpec [] [exExpr]
+ , AST.SubProgBody replaceSpec [AST.SPVD replaceVar] [replaceExpr,replaceRet]
+ , AST.SubProgBody headSpec [] [headExpr]
+ , AST.SubProgBody lastSpec [] [lastExpr]
+ , AST.SubProgBody initSpec [AST.SPVD initVar] [initExpr, initRet]
+ , AST.SubProgBody tailSpec [AST.SPVD tailVar] [tailExpr, tailRet]
+ , AST.SubProgBody takeSpec [AST.SPVD takeVar] [takeExpr, takeRet]
+ , AST.SubProgBody dropSpec [AST.SPVD dropVar] [dropExpr, dropRet]
+ ]
+ where
+ ixPar = AST.unsafeVHDLBasicId "ix"
+ vecPar = AST.unsafeVHDLBasicId "vec"
+ nPar = AST.unsafeVHDLBasicId "n"
+ iId = AST.unsafeVHDLBasicId "i"
+ iPar = iId
+ aPar = AST.unsafeVHDLBasicId "a"
+ resId = AST.unsafeVHDLBasicId "res"
+ exSpec = AST.Function exId [AST.IfaceVarDec vecPar vectorTM,
+ AST.IfaceVarDec ixPar naturalTM] elemTM
+ exExpr = AST.ReturnSm (Just $ AST.PrimName $ AST.NIndexed
+ (AST.IndexedName (AST.NSimple vecPar) [AST.PrimName $
+ AST.NSimple ixPar]))
+ replaceSpec = AST.Function replaceId [ AST.IfaceVarDec vecPar vectorTM
+ , AST.IfaceVarDec iPar naturalTM
+ , AST.IfaceVarDec aPar elemTM
+ ] vectorTM
+ -- variable res : fsvec_x (0 to vec'length-1);
+ replaceVar =
+ AST.VarDec resId
+ (AST.SubtypeIn vectorTM
+ (Just $ AST.IndexConstraint
+ [AST.ToRange (AST.PrimLit "0")
+ (AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing) AST.:-:
+ (AST.PrimLit "1")) ]))
+ Nothing
+ -- res AST.:= vec(0 to i-1) & a & vec(i+1 to length'vec-1)
+ replaceExpr = AST.NSimple resId AST.:=
+ (vecSlice (AST.PrimLit "0") (AST.PrimName (AST.NSimple iPar) AST.:-: AST.PrimLit "1") AST.:&:
+ AST.PrimName (AST.NSimple aPar) AST.:&:
+ vecSlice (AST.PrimName (AST.NSimple iPar) AST.:+: AST.PrimLit "1")
+ ((AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing))
+ AST.:-: AST.PrimLit "1"))
+ replaceRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
+ vecSlice init last = AST.PrimName (AST.NSlice
+ (AST.SliceName
+ (AST.NSimple vecPar)
+ (AST.ToRange init last)))
+ headSpec = AST.Function headId [AST.IfaceVarDec vecPar vectorTM] elemTM
+ -- return vec(0);
+ headExpr = AST.ReturnSm (Just $ (AST.PrimName $ AST.NIndexed (AST.IndexedName
+ (AST.NSimple vecPar) [AST.PrimLit "0"])))
+ lastSpec = AST.Function lastId [AST.IfaceVarDec vecPar vectorTM] elemTM
+ -- return vec(vec'length-1);
+ lastExpr = AST.ReturnSm (Just $ (AST.PrimName $ AST.NIndexed (AST.IndexedName
+ (AST.NSimple vecPar)
+ [AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing)
+ AST.:-: AST.PrimLit "1"])))
+ initSpec = AST.Function initId [AST.IfaceVarDec vecPar vectorTM] vectorTM
+ -- variable res : fsvec_x (0 to vec'length-2);
+ initVar =
+ AST.VarDec resId
+ (AST.SubtypeIn vectorTM
+ (Just $ AST.IndexConstraint
+ [AST.ToRange (AST.PrimLit "0")
+ (AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing) AST.:-:
+ (AST.PrimLit "2")) ]))
+ Nothing
+ -- resAST.:= vec(0 to vec'length-2)
+ initExpr = AST.NSimple resId AST.:= (vecSlice
+ (AST.PrimLit "0")
+ (AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing)
+ AST.:-: AST.PrimLit "2"))
+ initRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
+ tailSpec = AST.Function tailId [AST.IfaceVarDec vecPar vectorTM] vectorTM
+ -- variable res : fsvec_x (0 to vec'length-2);
+ tailVar =
+ AST.VarDec resId
+ (AST.SubtypeIn vectorTM
+ (Just $ AST.IndexConstraint
+ [AST.ToRange (AST.PrimLit "0")
+ (AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing) AST.:-:
+ (AST.PrimLit "2")) ]))
+ Nothing
+ -- res AST.:= vec(1 to vec'length-1)
+ tailExpr = AST.NSimple resId AST.:= (vecSlice
+ (AST.PrimLit "1")
+ (AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing)
+ AST.:-: AST.PrimLit "1"))
+ tailRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
+ takeSpec = AST.Function takeId [AST.IfaceVarDec nPar naturalTM,
+ AST.IfaceVarDec vecPar vectorTM ] vectorTM
+ -- variable res : fsvec_x (0 to n-1);
+ takeVar =
+ AST.VarDec resId
+ (AST.SubtypeIn vectorTM
+ (Just $ AST.IndexConstraint
+ [AST.ToRange (AST.PrimLit "0")
+ ((AST.PrimName (AST.NSimple nPar)) AST.:-:
+ (AST.PrimLit "1")) ]))
+ Nothing
+ -- res AST.:= vec(0 to n-1)
+ takeExpr = AST.NSimple resId AST.:=
+ (vecSlice (AST.PrimLit "1")
+ (AST.PrimName (AST.NSimple $ nPar) AST.:-: AST.PrimLit "1"))
+ takeRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
+ dropSpec = AST.Function dropId [AST.IfaceVarDec nPar naturalTM,
+ AST.IfaceVarDec vecPar vectorTM ] vectorTM
+ -- variable res : fsvec_x (0 to vec'length-n-1);
+ dropVar =
+ AST.VarDec resId
+ (AST.SubtypeIn vectorTM
+ (Just $ AST.IndexConstraint
+ [AST.ToRange (AST.PrimLit "0")
+ (AST.PrimName (AST.NAttribute $
+ AST.AttribName (AST.NSimple vecPar) lengthId Nothing) AST.:-:
+ (AST.PrimName $ AST.NSimple nPar)AST.:-: (AST.PrimLit "1")) ]))
+ Nothing
+ -- res AST.:= vec(n to vec'length-1)
+ dropExpr = AST.NSimple resId AST.:= (vecSlice
+ (AST.PrimName $ AST.NSimple nPar)
+ (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