import Data.Accessor
-- GHC API
+import qualified GHC
import qualified CoreSyn
import qualified Type
import qualified HscTypes
-- Local imports
import CLasH.VHDL.VHDLTypes
+-- | A specification of an entity we can generate VHDL for. Consists of the
+-- binder of the top level entity, an optional initial state and an optional
+-- test input.
+type EntitySpec = (Maybe CoreSyn.CoreBndr, Maybe CoreSyn.CoreExpr, Maybe CoreSyn.CoreExpr)
+
+-- | A function that knows which parts of a module to compile
+type Finder =
+ HscTypes.CoreModule -- ^ The module to look at
+ -> GHC.Ghc [EntitySpec]
+
+-----------------------------------------------------------------------------
+-- The TranslatorSession
+-----------------------------------------------------------------------------
+
-- A orderable equivalent of CoreSyn's Type for use as a map key
-newtype OrdType = OrdType { getType :: Type.Type }
+newtype OrdType = OrdType Type.Type
instance Eq OrdType where
(OrdType a) == (OrdType b) = Type.tcEqType a b
instance Ord OrdType where
data HType = StdType OrdType |
ADTType String [HType] |
+ EnumType String [String] |
VecType Int HType |
SizedWType Int |
RangedWType Int |
BuiltinType String
deriving (Eq, Ord)
--- A map of a Core type to the corresponding type name
-type TypeMap = Map.Map HType (AST.VHDLId, Either AST.TypeDef AST.SubtypeIn)
+-- A map of a Core type to the corresponding type name, or Nothing when the
+-- type would be empty.
+type TypeMap = Map.Map HType (Maybe (AST.VHDLId, Either AST.TypeDef AST.SubtypeIn))
-- A map of a vector Core element type and function name to the coressponding
-- VHDLId of the function and the function body.
, tsType_ :: TypeState
, tsBindings_ :: Map.Map CoreSyn.CoreBndr CoreSyn.CoreExpr
, tsNormalized_ :: Map.Map CoreSyn.CoreBndr CoreSyn.CoreExpr
+ , tsEntityCounter_ :: Integer
, tsEntities_ :: Map.Map CoreSyn.CoreBndr Entity
, tsArchitectures_ :: Map.Map CoreSyn.CoreBndr (Architecture, [CoreSyn.CoreBndr])
}
type TranslatorSession = State.State TranslatorState
+-----------------------------------------------------------------------------
+-- Some accessors
+-----------------------------------------------------------------------------
+
-- Does the given binder reference a top level binder in the current
-- module(s)?
isTopLevelBinder :: CoreSyn.CoreBndr -> TranslatorSession Bool
bindings <- getA tsBindings
return $ Map.member bndr bindings
+-- Finds the value of a global binding, if available
+getGlobalBind :: CoreSyn.CoreBndr -> TranslatorSession (Maybe CoreSyn.CoreExpr)
+getGlobalBind bndr = do
+ bindings <- getA tsBindings
+ return $ Map.lookup bndr bindings
+
+-- Adds a new global binding with the given value
+addGlobalBind :: CoreSyn.CoreBndr -> CoreSyn.CoreExpr -> TranslatorSession ()
+addGlobalBind bndr expr = modA tsBindings (Map.insert bndr expr)
+
+-- Returns a list of all global binders
+getGlobalBinders :: TranslatorSession [CoreSyn.CoreBndr]
+getGlobalBinders = do
+ bindings <- getA tsBindings
+ return $ Map.keys bindings
+
-- vim: set ts=8 sw=2 sts=2 expandtab: