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Commit 219a57c3 by Zachary Snow
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preliminary language support for parameterized class scopes

parent 296e2461
Showing with 100 additions and 59 deletions
src/Convert/DimensionQuery.hs
......@@ -65,7 +65,7 @@ convertExpr (orig @ (DimsFn FnUnpackedDimensions (Left t))) =
convertExpr (orig @ (DimsFn FnDimensions (Left t))) =
case t of
IntegerAtom{} -> Number "1"
Alias{} -> orig
CSAlias{} -> orig
TypeOf{} -> orig
UnpackedType t' rs ->
BinOp Add
......@@ -95,7 +95,7 @@ convertExpr (DimFn f (Left t) (Number str)) =
Just d = dm
r = rs !! (fromIntegral $ d - 1)
isUnresolved :: Type -> Bool
isUnresolved (Alias{}) = True
isUnresolved (CSAlias{}) = True
isUnresolved (TypeOf{}) = True
isUnresolved _ = False
convertExpr (DimFn f (Left t) d) =
......
src/Convert/Enum.hs
......@@ -60,7 +60,7 @@ convertDescription' description =
-- replace, but write down, enum types
traverseType :: Type -> Writer Enums Type
traverseType (Enum (t @ Alias{}) v rs) =
traverseType (Enum (t @ CSAlias{}) v rs) =
return $ Enum t v rs -- not ready
traverseType (Enum (Implicit sg rl) v rs) =
traverseType $ Enum t' v rs
......
src/Convert/Interface.hs
......@@ -92,7 +92,7 @@ convertDescription interfaces modules (Part attrs extern Module lifetime name po
InterfaceT interfaceName (Just modportName) [] ->
when (Map.member interfaceName interfaces) $
writeModport interfaceName modportName
Alias Nothing interfaceName [] ->
Alias interfaceName [] ->
when (Map.member interfaceName interfaces) $
writeModport interfaceName ""
_ -> return ()
......@@ -195,7 +195,7 @@ convertDescription interfaces modules (Part attrs extern Module lifetime name po
modportDecls = lookupModport interfaceItems modportName
modportName = case portType of
InterfaceT _ (Just x) [] -> x
Alias Nothing _ [] -> ""
Alias _ [] -> ""
_ -> error $ "can't deduce modport for interface "
++ interfaceName ++ " bound to port "
++ portName ++ " of module " ++ moduleName
......
src/Convert/NestPI.hs
......@@ -94,7 +94,7 @@ collectIdentsM _ = return ()
-- writes down aliased typenames
collectTypenamesM :: Type -> Writer Idents ()
collectTypenamesM (Alias _ x _) = tell $ Set.singleton x
collectTypenamesM (CSAlias _ _ x _) = tell $ Set.singleton x
collectTypenamesM _ = return ()
-- returns the "name" of a package item, if it has one
......
src/Convert/Package.hs
......@@ -111,8 +111,8 @@ prefixPackageItem packageName idents item =
Decl (ParamType a x b ) -> Decl (ParamType a (prefix x) b )
other -> other
convertTypeM (Alias Nothing x rs) =
prefixM x >>= \x' -> return $ Alias Nothing x' rs
convertTypeM (Alias x rs) =
prefixM x >>= \x' -> return $ Alias x' rs
convertTypeM (Enum t items rs) =
mapM prefixItem items >>= \items' -> return $ Enum t items' rs
where prefixItem (x, e) = prefixM x >>= \x' -> return (x', e)
......@@ -201,12 +201,14 @@ traverseModuleItem _ _ item =
where
traverseExpr :: Expr -> Expr
traverseExpr (Ident x) = Ident x
traverseExpr (PSIdent x y) = Ident $ x ++ "_" ++ y
traverseExpr other = other
traverseType :: Type -> Type
traverseType (Alias (Just ps) xx rs) =
Alias Nothing (ps ++ "_" ++ xx) rs
traverseType (Alias xx rs) = Alias xx rs
traverseType (PSAlias ps xx rs) =
Alias (ps ++ "_" ++ xx) rs
traverseType other = other
-- returns the "name" of a package item, if it has one
......
src/Convert/ParamType.hs
......@@ -199,8 +199,7 @@ defaultTag = "_sv2v_default"
-- attempt to convert an expression to syntactically equivalent type
exprToType :: Expr -> Maybe Type
exprToType (Ident x) = Just $ Alias Nothing x []
exprToType (PSIdent x y) = Just $ Alias (Just x) y []
exprToType (CSIdent x p y) = Just $ CSAlias x p y []
exprToType (Range e NonIndexed r) =
case exprToType e of
Nothing -> Nothing
......
src/Convert/Traverse.hs
......@@ -431,6 +431,10 @@ traverseNestedExprsM mapper = exprMapper
em (Time s) = return $ Time s
em (Ident i) = return $ Ident i
em (PSIdent x y) = return $ PSIdent x y
em (CSIdent x ps y) = do
tes' <- mapM typeOrExprMapper $ map snd ps
let ps' = zip (map fst ps) tes'
return $ CSIdent x ps' y
em (Range e m (e1, e2)) = do
e' <- exprMapper e
e1' <- exprMapper e1
......@@ -517,8 +521,18 @@ exprMapperHelpers exprMapper =
b' <- exprMapper b
return (a', b')
typeOrExprMapper (Left t) =
typeMapper t >>= return . Left
typeOrExprMapper (Right e) =
exprMapper e >>= return . Right
typeMapper' (TypeOf expr) =
exprMapper expr >>= return . TypeOf
typeMapper' (CSAlias x pm y rs) = do
vals' <- mapM typeOrExprMapper $ map snd pm
let pm' = zip (map fst pm) vals'
rs' <- mapM rangeMapper rs
return $ CSAlias x pm' y rs'
typeMapper' t = do
let (tf, rs) = typeRanges t
rs' <- mapM rangeMapper rs
......@@ -855,7 +869,7 @@ traverseNestedTypesM :: Monad m => MapperM m Type -> MapperM m Type
traverseNestedTypesM mapper = fullMapper
where
fullMapper = mapper >=> tm
tm (Alias ps xx rs) = return $ Alias ps xx rs
tm (CSAlias ps pm xx rs) = return $ CSAlias ps pm xx rs
tm (Net kw sg rs) = return $ Net kw sg rs
tm (Implicit sg rs) = return $ Implicit sg rs
tm (IntegerVector kw sg rs) = return $ IntegerVector kw sg rs
......
src/Convert/Typedef.hs
......@@ -79,10 +79,10 @@ traverseStmtM =
traverseExprTypesM traverseTypeM >=> traverseExprM
traverseTypeM :: Type -> Scoper Type Type
traverseTypeM (Alias Nothing st rs1) = do
traverseTypeM (Alias st rs1) = do
details <- lookupIdentM st
return $ case details of
Nothing -> Alias Nothing st rs1
Nothing -> Alias st rs1
Just (_, _, typ) -> case typ of
Net kw sg rs2 -> Net kw sg $ rs1 ++ rs2
Implicit sg rs2 -> Implicit sg $ rs1 ++ rs2
......@@ -91,7 +91,7 @@ traverseTypeM (Alias Nothing st rs1) = do
Struct p l rs2 -> Struct p l $ rs1 ++ rs2
Union p l rs2 -> Union p l $ rs1 ++ rs2
InterfaceT x my rs2 -> InterfaceT x my $ rs1 ++ rs2
Alias ps x rs2 -> Alias ps x $ rs1 ++ rs2
CSAlias ps pm xx rs2 -> CSAlias ps pm xx $ rs1 ++ rs2
UnpackedType t rs2 -> UnpackedType t $ rs1 ++ rs2
IntegerAtom kw sg -> nullRange (IntegerAtom kw sg) rs1
NonInteger kw -> nullRange (NonInteger kw ) rs1
......
src/Language/SystemVerilog/AST/Expr.hs
{-# LANGUAGE PatternSynonyms #-}
{- sv2v
- Author: Zachary Snow <zach@zachjs.com>
- Initial Verilog AST Author: Tom Hawkins <tomahawkins@gmail.com>
......@@ -7,6 +8,8 @@
module Language.SystemVerilog.AST.Expr
( Expr (..)
, pattern Ident
, pattern PSIdent
, Range
, TypeOrExpr
, ExprOrRange
......@@ -24,6 +27,8 @@ module Language.SystemVerilog.AST.Expr
, endianCondRange
, dimensionsSize
, readNumber
, ParamBinding
, showParams
) where
import Data.Bits (shiftL, shiftR)
......@@ -45,8 +50,7 @@ data Expr
= String String
| Number String
| Time String
| Ident Identifier
| PSIdent Identifier Identifier
| CSIdent Identifier [ParamBinding] Identifier
| Range Expr PartSelectMode Range
| Bit Expr Expr
| Repeat Expr [Expr]
......@@ -66,12 +70,19 @@ data Expr
| Nil
deriving (Eq, Ord)
pattern Ident :: Identifier -> Expr
pattern Ident x = PSIdent "" x
pattern PSIdent :: Identifier -> Identifier -> Expr
pattern PSIdent x y = CSIdent x [] y
instance Show Expr where
show (Nil ) = ""
show (Number str ) = str
show (Time str ) = str
show (Ident str ) = str
show (PSIdent x y ) = printf "%s::%s" x y
show (CSIdent x p y) = printf "%s#%s::%s" x (showParams p) y
show (String str ) = printf "\"%s\"" str
show (Bit e b ) = printf "%s[%s]" (show e) (show b)
show (Range e m r) = printf "%s[%s%s%s]" (show e) (show $ fst r) (show m) (show $ snd r)
......@@ -353,3 +364,14 @@ dimensionsSize ranges =
foldl (BinOp Mul) (Number "1") $
map rangeSize $
ranges
type ParamBinding = (Identifier, TypeOrExpr)
showParams :: [ParamBinding] -> String
showParams params = indentedParenList $ map showParam params
showParam :: ParamBinding -> String
showParam ("*", Right Nil) = ".*"
showParam (i, arg) =
printf fmt i (either show show arg)
where fmt = if i == "" then "%s%s" else ".%s(%s)"
src/Language/SystemVerilog/AST/ModuleItem.hs
{-# LANGUAGE PatternSynonyms #-}
{- sv2v
- Author: Zachary Snow <zach@zachjs.com>
- Initial Verilog AST Author: Tom Hawkins <tomahawkins@gmail.com>
......@@ -8,7 +9,6 @@
module Language.SystemVerilog.AST.ModuleItem
( ModuleItem (..)
, PortBinding
, ParamBinding
, ModportDecl
, AlwaysKW (..)
, NInputGateKW (..)
......@@ -24,7 +24,7 @@ import Language.SystemVerilog.AST.ShowHelp
import Language.SystemVerilog.AST.Attr (Attr)
import Language.SystemVerilog.AST.Decl (Direction)
import Language.SystemVerilog.AST.Description (PackageItem)
import Language.SystemVerilog.AST.Expr (Expr(Ident, Nil), Range, TypeOrExpr, showRanges)
import Language.SystemVerilog.AST.Expr (Expr(Nil), pattern Ident, Range, showRanges, ParamBinding, showParams)
import Language.SystemVerilog.AST.GenItem (GenItem)
import Language.SystemVerilog.AST.LHS (LHS)
import Language.SystemVerilog.AST.Stmt (Stmt, AssertionItem, Timing(Delay))
......@@ -89,15 +89,6 @@ showGate kw d x args =
delayStr = if d == Nil then "" else showPad $ Delay d
nameStr = showPad $ Ident x
showParams :: [ParamBinding] -> String
showParams params = indentedParenList $ map showParam params
showParam :: ParamBinding -> String
showParam ("*", Right Nil) = ".*"
showParam (i, arg) =
printf fmt i (either show show arg)
where fmt = if i == "" then "%s%s" else ".%s(%s)"
showModportDecl :: ModportDecl -> String
showModportDecl (dir, ident, t, e) =
if e == Ident ident
......@@ -106,8 +97,6 @@ showModportDecl (dir, ident, t, e) =
type PortBinding = (Identifier, Expr)
type ParamBinding = (Identifier, TypeOrExpr)
type ModportDecl = (Direction, Identifier, Type, Expr)
data AlwaysKW
......
src/Language/SystemVerilog/AST/Type.hs
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE PatternSynonyms #-}
{- sv2v
- Author: Zachary Snow <zach@zachjs.com>
- Initial Verilog AST Author: Tom Hawkins <tomahawkins@gmail.com>
......@@ -10,6 +11,8 @@ module Language.SystemVerilog.AST.Type
( Identifier
, Field
, Type (..)
, pattern Alias
, pattern PSAlias
, Signing (..)
, Packing (..)
, NetType (..)
......@@ -42,7 +45,7 @@ data Type
| NonInteger NonIntegerType
| Net NetTypeAndStrength Signing [Range]
| Implicit Signing [Range]
| Alias (Maybe Identifier) Identifier [Range]
| CSAlias Identifier [ParamBinding] Identifier [Range]
| Enum Type [Item] [Range]
| Struct Packing [Field] [Range]
| Union Packing [Field] [Range]
......@@ -51,8 +54,16 @@ data Type
| UnpackedType Type [Range] -- used internally
deriving (Eq, Ord)
pattern Alias :: Identifier -> [Range] -> Type
pattern Alias x rs = PSAlias "" x rs
pattern PSAlias :: Identifier -> Identifier -> [Range] -> Type
pattern PSAlias x y rs = CSAlias x [] y rs
instance Show Type where
show (Alias ps xx rs) = printf "%s%s%s" (maybe "" (++ "::") ps) xx (showRanges rs)
show (Alias xx rs) = printf "%s%s" xx (showRanges rs)
show (PSAlias ps xx rs) = printf "%s::%s%s" ps xx (showRanges rs)
show (CSAlias ps pm xx rs) = printf "%s#%s::%s%s" ps (showParams pm) xx (showRanges rs)
show (Net kw sg rs) = printf "%s%s%s" (show kw) (showPadBefore sg) (showRanges rs)
show (Implicit sg rs) = printf "%s%s" (showPad sg) (dropWhile (== ' ') $ showRanges rs)
show (IntegerVector kw sg rs) = printf "%s%s%s" (show kw) (showPadBefore sg) (showRanges rs)
......@@ -91,7 +102,7 @@ instance Ord (Signing -> [Range] -> Type) where
compare tf1 tf2 = compare (tf1 Unspecified) (tf2 Unspecified)
typeRanges :: Type -> ([Range] -> Type, [Range])
typeRanges (Alias ps xx rs) = (Alias ps xx , rs)
typeRanges (CSAlias ps pm xx rs) = (CSAlias ps pm xx , rs)
typeRanges (Net kw sg rs) = (Net kw sg, rs)
typeRanges (Implicit sg rs) = (Implicit sg, rs)
typeRanges (IntegerVector kw sg rs) = (IntegerVector kw sg, rs)
......
src/Language/SystemVerilog/Parser/Parse.y
......@@ -423,7 +423,7 @@ time { Token Lit_time _ _ }
%left "**"
%right REDUCE_OP "!" "~" "++" "--"
%left "'"
%left "(" ")" "[" "]" "." "::"
%left "(" ")" "[" "]" "." "::" "#"
%%
......@@ -444,8 +444,11 @@ Description :: { [Description] }
Type :: { Type }
: TypeNonIdent { $1 }
| Identifier Dimensions { Alias (Nothing) $1 $2 }
| Identifier "::" Identifier Dimensions { Alias (Just $1) $3 $4 }
| TypeAlias { $1 }
TypeAlias :: { Type }
: Identifier Dimensions { Alias $1 $2 }
| Identifier "::" Identifier Dimensions { PSAlias $1 $3 $4 }
| Identifier ParamBindings "::" Identifier Dimensions { CSAlias $1 $2 $4 $5 }
TypeNonIdent :: { Type }
: PartialType OptSigning Dimensions { $1 $2 $3 }
| "type" "(" Expr ")" { TypeOf $3 }
......@@ -626,12 +629,13 @@ DeclToken :: { DeclToken }
| Signing {% posInject \p -> DTSigning p $1 }
| ExplicitLifetime {% posInject \p -> DTLifetime p $1 }
| "const" PartialType {% posInject \p -> DTType p $2 }
| Identifier "::" Identifier {% posInject \p -> DTPSIdent p $1 $3 }
| "{" StreamOp StreamSize Concat "}" {% posInject \p -> DTStream p $2 $3 (map toLHS $4) }
| "{" StreamOp Concat "}" {% posInject \p -> DTStream p $2 (Number "1") (map toLHS $3) }
| opt("var") "type" "(" Expr ")" {% posInject \p -> DTType p (\Unspecified -> \[] -> TypeOf $4) }
| "<=" opt(DelayOrEvent) Expr {% posInject \p -> DTAsgn p AsgnOpNonBlocking $2 $3 }
| IncOrDecOperator {% posInject \p -> DTAsgn p (AsgnOp $1) Nothing (Number "1") }
| Identifier "::" Identifier {% posInject \p -> DTCSIdent p $1 [] $3 }
| Identifier ParamBindings "::" Identifier {% posInject \p -> DTCSIdent p $1 $2 $4 }
DeclTokenAsgn :: { DeclToken }
: "=" opt(DelayOrEvent) Expr {% posInject \p -> DTAsgn p AsgnOpEq $2 $3 }
| AsgnBinOp Expr {% posInject \p -> DTAsgn p $1 Nothing $2 }
......@@ -1053,9 +1057,8 @@ ModuleParameterDecl(delim) :: { [Decl] }
| "type" TypeAsgns delim { map (uncurry $ ParamType Parameter) $2 }
ParameterDecl(delim) :: { [Decl] }
: ParameterDeclKW DeclAsgns delim { makeParamDecls $1 (Implicit Unspecified []) $2 }
| ParameterDeclKW ParamType DeclAsgns delim { makeParamDecls $1 ($2 ) $3 }
| ParameterDeclKW Identifier Dimensions DeclAsgns delim { makeParamDecls $1 (Alias (Nothing) $2 $3) $4 }
| ParameterDeclKW Identifier "::" Identifier Dimensions DeclAsgns delim { makeParamDecls $1 (Alias (Just $2) $4 $5) $6 }
| ParameterDeclKW ParamType DeclAsgns delim { makeParamDecls $1 $2 $3 }
| ParameterDeclKW TypeAlias DeclAsgns delim { makeParamDecls $1 $2 $3 }
| ParameterDeclKW "type" TypeAsgns delim { map (uncurry $ ParamType $1) $3 }
ParameterDeclKW :: { ParamScope }
: "parameter" { Parameter }
......@@ -1079,8 +1082,13 @@ DelayOrEvent :: { Timing }
: DelayControl { Delay $1 }
| EventControl { Event $1 }
DelayControl :: { Expr }
: "#" DelayValue { $2 }
: "#" Number { Number $2 }
| "#" Time { Time $2 }
| "#" "(" Expr ")" { $3 }
| "#" "(" Expr ":" Expr ":" Expr ")" { MinTypMax $3 $5 $7 }
| "#" Identifier { Ident $2 }
| "#" Identifier "::" Identifier { PSIdent $2 $4 }
| "#" Identifier ParamBindings "::" Identifier { CSIdent $2 $3 $5 }
CycleDelay :: { Expr }
: "##" Expr { $2 }
EventControl :: { Sense }
......@@ -1100,13 +1108,6 @@ Sense :: { Sense }
| "posedge" "(" LHS ")" { SensePosedge $3 }
| "negedge" "(" LHS ")" { SenseNegedge $3 }
DelayValue :: { Expr }
: Number { Number $1 }
| Time { Time $1 }
| Identifier { Ident $1 }
| Identifier "::" Identifier { PSIdent $1 $3 }
| "(" Expr ":" Expr ":" Expr ")" { MinTypMax $2 $4 $6 }
CaseKW :: { CaseKW }
: "case" { CaseN }
| "casex" { CaseX }
......@@ -1174,8 +1175,6 @@ Expr :: { Expr }
| DimsFn "(" TypeOrExpr ")" { DimsFn $1 $3 }
| DimFn "(" TypeOrExpr ")" { DimFn $1 $3 (Number "1") }
| DimFn "(" TypeOrExpr "," Expr ")" { DimFn $1 $3 $5 }
| Identifier { Ident $1 }
| Identifier "::" Identifier { PSIdent $1 $3 }
| Expr PartSelect { Range $1 (fst $2) (snd $2) }
| Expr "[" Expr "]" { Bit $1 $3 }
| "{" Expr Concat "}" { Repeat $2 $3 }
......@@ -1189,6 +1188,9 @@ Expr :: { Expr }
| "{" StreamOp Concat "}" { Stream $2 (Number "1") $3 }
| Expr "inside" "{" OpenRangeList "}" { Inside $1 $4 }
| "(" Expr ":" Expr ":" Expr ")" { MinTypMax $2 $4 $6 }
| Identifier %prec REDUCE_OP {- defer -} { Ident $1 }
| Identifier "::" Identifier { PSIdent $1 $3 }
| Identifier ParamBindings "::" Identifier { CSIdent $1 $2 $4 }
-- binary expressions
| Expr "||" Expr { BinOp LogOr $1 $3 }
| Expr "&&" Expr { BinOp LogAnd $1 $3 }
......
src/Language/SystemVerilog/Parser/ParseDecl.hs
{-# LANGUAGE PatternSynonyms #-}
{- sv2v
- Author: Zachary Snow <zach@zachjs.com>
-
......@@ -37,6 +38,7 @@
module Language.SystemVerilog.Parser.ParseDecl
( DeclToken (..)
, pattern DTIdent
, parseDTsAsPortDecls
, parseDTsAsModuleItems
, parseDTsAsDecls
......@@ -56,8 +58,7 @@ data DeclToken
| DTAutoDim Position
| DTAsgn Position AsgnOp (Maybe Timing) Expr
| DTRange Position (PartSelectMode, Range)
| DTIdent Position Identifier
| DTPSIdent Position Identifier Identifier
| DTCSIdent Position Identifier [ParamBinding] Identifier
| DTDir Position Direction
| DTType Position (Signing -> [Range] -> Type)
| DTParams Position [ParamBinding]
......@@ -70,6 +71,8 @@ data DeclToken
| DTLifetime Position Lifetime
deriving (Show, Eq)
pattern DTIdent :: Position -> Identifier -> DeclToken
pattern DTIdent p x = DTCSIdent p "" [] x
-- entrypoints besides `parseDTsAsDeclOrStmt` use this to disallow `DTAsgn` with
-- a non-blocking operator, binary assignment operator, or a timing control
......@@ -224,8 +227,8 @@ parseDTsAsDecl tokens =
-- [PUBLIC]: parser for single block item declarations or assign or arg-less
-- subroutine call statements
parseDTsAsDeclOrStmt :: [DeclToken] -> ([Decl], [Stmt])
parseDTsAsDeclOrStmt [DTIdent pos f] = ([], [traceStmt pos, Subroutine (Ident f) (Args [] [])])
parseDTsAsDeclOrStmt [DTPSIdent pos p f] = ([], [traceStmt pos, Subroutine (PSIdent p f) (Args [] [])])
parseDTsAsDeclOrStmt [DTCSIdent pos ps pm f] =
([], [traceStmt pos, Subroutine (CSIdent ps pm f) (Args [] [])])
parseDTsAsDeclOrStmt (DTAsgn pos (AsgnOp op) mt e : tok : toks) =
parseDTsAsDeclOrStmt $ (tok : toks) ++ [DTAsgn pos (AsgnOp op) mt e]
parseDTsAsDeclOrStmt tokens =
......@@ -403,10 +406,9 @@ takeType (DTIdent _ a : DTDot _ b : rest) = (InterfaceT a (Just b), rest)
takeType (DTType _ tf : DTSigning _ sg : rest) = (tf sg , rest)
takeType (DTType _ tf : rest) = (tf Unspecified , rest)
takeType (DTSigning _ sg : rest) = (Implicit sg , rest)
takeType (DTPSIdent _ ps tn : rest) = (Alias (Just ps) tn , rest)
takeType (DTIdent pos tn : rest) =
if couldBeTypename
then (Alias (Nothing) tn , rest)
then (Alias tn , rest)
else (Implicit Unspecified, DTIdent pos tn : rest)
where
couldBeTypename =
......@@ -417,6 +419,7 @@ takeType (DTIdent pos tn : rest) =
(_, Nothing) -> True
-- if comma is first, then this ident is a declaration
(Just a, Just b) -> a < b
takeType (DTCSIdent _ ps pm tn : rest) = (CSAlias ps pm tn , rest)
takeType rest = (Implicit Unspecified, rest)
takeRanges :: [DeclToken] -> ([Range], [DeclToken])
......@@ -476,8 +479,7 @@ tokPos (DTComma p) = p
tokPos (DTAutoDim p) = p
tokPos (DTAsgn p _ _ _) = p
tokPos (DTRange p _) = p
tokPos (DTIdent p _) = p
tokPos (DTPSIdent p _ _) = p
tokPos (DTCSIdent p _ _ _) = p
tokPos (DTDir p _) = p
tokPos (DTType p _) = p
tokPos (DTParams p _) = p
......
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