8f767ff0d4
This makes sure that we catch all leftover instances of using SYB to do generic operations that we should be using Polyplate for instead. Most modules should only import Data, and possibly Typeable.
95 lines
3.3 KiB
Haskell
95 lines
3.3 KiB
Haskell
{-
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Tock: a compiler for parallel languages
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Copyright (C) 2007 University of Kent
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 2 of the License, or (at your
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option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>.
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-}
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-- | Top-level process support.
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module TLP where
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import Control.Monad.State
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import Data.Generics (Data, Typeable)
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import Data.List
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import Data.Maybe
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import qualified AST as A
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import CompState
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import Errors
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import Metadata
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import Types
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import Utils
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data TLPChannel = TLPIn | TLPOut | TLPError
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deriving (Show, Eq, Typeable, Data)
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-- | Get the name of the TLP and the channels it uses.
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-- Fail if the process isn't using a valid interface.
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tlpInterface :: (CSMR m, Die m) => m (A.Name, [(Maybe A.Direction, TLPChannel)])
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tlpInterface
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= do mainLocals <- getCompState >>* csMainLocals
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when (null mainLocals) $
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dieReport (Nothing, "No main process found")
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let (_, (mainName, _)) = head mainLocals
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st <- specTypeOfName mainName
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(m, formals) <-
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case st of
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A.Proc m _ fs _ -> return (m, fs)
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_ -> dieP (findMeta mainName) "Last definition is not a PROC"
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chans <- mapM (tlpChannel m) formals
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let chanIds = map snd chans
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when (nub chanIds /= chanIds) $
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dieP (findMeta mainName) "Channels used more than once in TLP"
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return (mainName, chans)
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where
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tlpChannel :: (CSMR m, Die m) => Meta -> A.Formal -> m (Maybe A.Direction, TLPChannel)
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tlpChannel m (A.Formal _ (A.ChanEnd dir _ _) n)
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= do def <- lookupName n
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let origN = A.ndOrigName def
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case lookup origN tlpChanNames of
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Just c ->
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if dir == (tlpDir c)
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then return (Just dir, c)
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else dieP m $ "TLP formal " ++ show n ++ " has wrong direction for its name"
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_ -> dieP m $ "TLP formal " ++ show n ++ " has unrecognised name"
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tlpChannel m (A.Formal _ (A.Chan _ _) n)
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= do def <- lookupName n
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let origN = A.ndOrigName def
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case lookup origN tlpChanNames of
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Just c ->
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return (Nothing, c)
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_ -> dieP m $ "TLP formal " ++ show n ++ " has unrecognised name"
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tlpChannel m (A.Formal _ _ n)
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= dieP m $ "TLP formal " ++ show n ++ " has unrecognised type"
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tlpDir :: TLPChannel -> A.Direction
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tlpDir TLPIn = A.DirInput
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tlpDir TLPOut = A.DirOutput
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tlpDir TLPError = A.DirOutput
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tlpChanNames :: [(String, TLPChannel)]
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tlpChanNames
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= [ ("in", TLPIn)
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, ("kb", TLPIn)
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, ("kyb", TLPIn)
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, ("keyb", TLPIn)
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, ("keyboard", TLPIn)
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, ("out", TLPOut)
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, ("scr", TLPOut)
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, ("screen", TLPOut)
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, ("err", TLPError)
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, ("error", TLPError)
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]
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