{-# LANGUAGE TemplateHaskell #-}
module TranslatorTypes where
-import qualified Control.Monad.State as State
+import qualified Control.Monad.Trans.State as State
import qualified Data.Map as Map
import qualified Data.Accessor.Template
import Data.Accessor
-- | A map from a HsFunction identifier to various stuff we collect about a
-- function along the way.
-type FuncMap = Map.Map HsFunction FuncData
+type FlatFuncMap = Map.Map HsFunction FlatFunction
--- | Some stuff we collect about a function along the way.
-data FuncData = FuncData {
- fdFlatFunc_ :: Maybe FlatFunction,
- fdEntity_ :: Maybe Entity,
- fdArch_ :: Maybe AST.ArchBody
-} deriving (Show)
-
--- Derive accessors
-$( Data.Accessor.Template.deriveAccessors ''FuncData )
-
-data VHDLSession = VHDLSession {
- coreMod :: HscTypes.CoreModule, -- The current module
- nameCount :: Int, -- A counter that can be used to generate unique names
- funcs :: FuncMap -- A map from HsFunction to FlatFunction, HWFunction, VHDL Entity and Architecture
+data TranslatorSession = TranslatorSession {
+ tsCoreModule_ :: HscTypes.CoreModule, -- ^ The current module
+ tsNameCount_ :: Int, -- ^ A counter that can be used to generate unique names
+ tsFlatFuncs_ :: FlatFuncMap -- ^ A map from HsFunction to FlatFunction
}
--- | Add the function to the session
-addFunc :: HsFunction -> VHDLState ()
-addFunc hsfunc =
- modFuncMap (Map.insert hsfunc (FuncData Nothing Nothing Nothing))
-
--- | Find the given function in the current session
-getFunc :: HsFunction -> VHDLState (Maybe FuncData)
-getFunc hsfunc = do
- fs <- State.gets funcs -- Get the funcs element from the session
- return $ Map.lookup hsfunc fs
-
--- | Gets all functions from the current session
-getFuncs :: VHDLState [(HsFunction, FuncData)]
-getFuncs = do
- fs <- State.gets funcs -- Get the funcs element from the session
- return $ Map.toList fs
-
--- | Gets all the functions from the current session
-getHsFuncs :: VHDLState [HsFunction]
-getHsFuncs = do
- fs <- State.gets funcs -- Get the funcs element from the session
- return $ Map.keys fs
-
--- | Sets the FlatFunction for the given HsFunction in the current session.
-setFlatFunc :: HsFunction -> FlatFunction -> VHDLState ()
-setFlatFunc hsfunc flatfunc =
- modFunc (fdFlatFunc ^= Just flatfunc) hsfunc
-
--- | Sets the Entity for the given HsFunction in the current session.
-setEntity :: HsFunction -> Entity -> VHDLState ()
-setEntity hsfunc entity =
- modFunc (fdEntity ^= Just entity) hsfunc
-
--- | Sets the Entity for the given HsFunction in the current session.
-setArchitecture :: HsFunction -> AST.ArchBody -> VHDLState ()
-setArchitecture hsfunc arch =
- modFunc (fdArch ^= Just arch) hsfunc
-
--- | Modify a function in the map using the given function
-modFunc :: (FuncData -> FuncData) -> HsFunction -> VHDLState ()
-modFunc f hsfunc =
- modFuncMap (Map.adjust f hsfunc)
-
--- | Get the map of functions in the session
-getFuncMap :: VHDLState FuncMap
-getFuncMap = State.gets funcs
-
--- | Modify the function map in the session using the given function
-modFuncMap :: (FuncMap -> FuncMap) -> VHDLState ()
-modFuncMap f = do
- fs <- State.gets funcs -- Get the funcs element from the session
- let fs' = f fs
- State.modify (\x -> x {funcs = fs' })
-
--- | Apply the given function to all functions in the map, and collect the
--- results. The function is allowed to change the function map in the
--- session, but any new functions added will not be mapped.
-modFuncs :: (HsFunction -> FuncData -> VHDLState ()) -> VHDLState ()
-modFuncs f = do
- hsfuncs <- getHsFuncs
- mapM doFunc hsfuncs
- return ()
- where
- doFunc hsfunc = do
- fdata_maybe <- getFunc hsfunc
- case fdata_maybe of
- Nothing -> do return ()
- Just fdata -> f hsfunc fdata
-
-getModule :: VHDLState HscTypes.CoreModule
-getModule = State.gets coreMod -- Get the coreMod element from the session
-
-type VHDLState = State.State VHDLSession
+-- Derive accessors
+$( Data.Accessor.Template.deriveAccessors ''TranslatorSession )
--- Makes the given name unique by appending a unique number.
--- This does not do any checking against existing names, so it only guarantees
--- uniqueness with other names generated by uniqueName.
-uniqueName :: String -> VHDLState String
-uniqueName name = do
- count <- State.gets nameCount -- Get the funcs element from the session
- State.modify (\s -> s {nameCount = count + 1})
- return $ name ++ "_" ++ (show count)
+type TranslatorState = State.State TranslatorSession
-- vim: set ts=8 sw=2 sts=2 expandtab: