2 -- Simple module providing some types used by Translator. These are in a
3 -- separate module to prevent circular dependencies in Pretty for example.
5 module TranslatorTypes where
7 import qualified Control.Monad.State as State
8 import qualified HscTypes
9 import qualified Data.Map as Map
13 -- | A map from a HsFunction identifier to various stuff we collect about a
14 -- function along the way.
15 type FuncMap = Map.Map HsFunction FuncData
16 -- | Some stuff we collect about a function along the way.
17 type FuncData = (FlatFunction)
19 data VHDLSession = VHDLSession {
20 coreMod :: HscTypes.CoreModule, -- The current module
21 nameCount :: Int, -- A counter that can be used to generate unique names
22 funcs :: FuncMap -- A map from HsFunction to FlatFunction, HWFunction, VHDL Entity and Architecture
25 -- | Add the function to the session
26 addFunc :: HsFunction -> FlatFunction -> VHDLState ()
27 addFunc hsfunc flatfunc = do
28 fs <- State.gets funcs -- Get the funcs element from the session
29 let fs' = Map.insert hsfunc (flatfunc) fs -- Insert function
30 State.modify (\x -> x {funcs = fs' })
32 -- | Find the given function in the current session
33 getFunc :: HsFunction -> VHDLState (Maybe FuncData)
35 fs <- State.gets funcs -- Get the funcs element from the session
36 return $ Map.lookup hsfunc fs
38 getModule :: VHDLState HscTypes.CoreModule
39 getModule = State.gets coreMod -- Get the coreMod element from the session
41 type VHDLState = State.State VHDLSession
43 -- Makes the given name unique by appending a unique number.
44 -- This does not do any checking against existing names, so it only guarantees
45 -- uniqueness with other names generated by uniqueName.
46 uniqueName :: String -> VHDLState String
48 count <- State.gets nameCount -- Get the funcs element from the session
49 State.modify (\s -> s {nameCount = count + 1})
50 return $ name ++ "_" ++ (show count)
52 -- vim: set ts=8 sw=2 sts=2 expandtab: