I seem to have implemented the Cell parser

src/RTLILParser/AST.hs

@@ -6,7 +6,8 @@ module RTLILParser.AST(
    ,SigSpec(..)        ,Slice(..)           ,ConnStmt(..)
    ,WireOption(..)     ,WireStmt(..)        ,Wire(..)
    ,MemoryOption(..)   ,MemoryStmt(..)      ,Memory(..)
-   ,MemoryID(..)
+   ,MemoryID(..)       ,CellBodyStmt(..)    ,ParameterSign(..)
+   ,Cell(..)
     ) where
 import Text.Read (Lexeme(Ident))
 import Data.Functor.Contravariant (Contravariant)
@@ -84,9 +85,18 @@ data MemoryOption   = MemoryOptionWidth     Int
                     deriving (Show)
 
 -- Cells
+data Cell           = Cell          CellStmt [AttrStmt] [CellBodyStmt]
+                      deriving (Show)
 data CellStmt       = CellStmt      CellId CellType  deriving (Show)
 data CellId         = CellId        Id deriving (Show)
 data CellType       = CellType      Id deriving (Show)
+data ParameterSign  = Signed | Real deriving (Show)
+data CellBodyStmt   = CellBodyParameter 
+                        (Maybe ParameterSign)
+                        Id
+                        Constant
+                    | CellConnect Id SigSpec
+                    deriving (Show)
 
 -- Processes
 -- Switches

src/RTLILParser/Parser.hs

@@ -11,7 +11,8 @@ import RTLILParser.AST(
    ,SigSpec(..)        ,Slice(..)           ,ConnStmt(..)
    ,WireOption(..)     ,WireStmt(..)        ,Wire(..)
    ,MemoryOption(..)   ,MemoryStmt(..)      ,Memory(..)
-   ,MemoryID(..)
+   ,MemoryID(..)       ,CellBodyStmt(..)    ,ParameterSign(..)
+   ,Cell(..)
     )
 import Util(binaryStringToInt)
 import RTLILParser.Primitives(
@@ -83,8 +84,8 @@ pModuleStmt = string "module" *> pWs *> pId <* pEol
 
 pParamStmt :: Parser ParamStmt
 pParamStmt = ParamStmt
-    <$> (string "parameter" *> pWs *> pId)
+    <$> (string "parameter" *> pWs *> pId <* pWs)
-    <*> optionMaybe (pWs *> pConstant)
+    <*> optionMaybe pConstant
     <*  pEol
 
 pConstant :: Parser Constant
@@ -194,16 +195,46 @@ pMemoryOption =
     try (MemoryOptionOffset <$> (string "offset" *> pWs *> pInteger))
 
 -- Cells
+pCell :: Parser Cell
+pCell = do
+    attrStmts       <- many pAttrStmt
+    cellStmt        <- pCellStmt
+    cellBodyStmts   <- many pCellBodyStmt
+    return $ Cell cellStmt attrStmts cellBodyStmts
+
 pCellStmt :: Parser CellStmt
 pCellStmt = do
     _ <- string "cell"
     _ <- pWs
-    cellId <- CellId <$> pId
-    _ <- pWs
     cellType <- CellType <$> pId
+    _ <- pWs
+    cellId <- CellId <$> pId
     _ <- pEol
     return $ CellStmt cellId cellType
 
+pCellBodyStmt :: Parser CellBodyStmt
+pCellBodyStmt = pCellBodyParameter <|> pCellBodyConnect
+
+pParameterSign :: Parser ParameterSign
+pParameterSign =
+    (Signed     <$ string "signed") <|>
+    (Real       <$ string "real")
+
+pCellBodyParameter :: Parser CellBodyStmt
+pCellBodyParameter = do
+    _       <- string "parameter" <* pWs
+    sign    <- optionMaybe pParameterSign <* pMaybeWs
+    id      <- pId
+    const   <- pConstant <* pEol
+    return $ CellBodyParameter sign id const
+
+pCellBodyConnect :: Parser CellBodyStmt
+pCellBodyConnect = do
+    _       <- string "connect" <* pWs
+    id      <- pId <* pWs
+    sigSpec <- pSigSpec <* pEol
+    return $ CellConnect id sigSpec
+
 -- Processes
 -- Switches
 -- Syncs