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|
----------------------------------------------------------------------
-- |
-- Module : IOGrammar
-- Maintainer : Aarne Ranta
-- Stability : (stable)
-- Portability : (portable)
--
-- > CVS $Date: 2005/03/08 18:08:58 $
-- > CVS $Author: aarne $
-- > CVS $Revision: 1.15 $
--
-- for reading grammars and terms from strings and files
-----------------------------------------------------------------------------
module IOGrammar (shellStateFromFiles,
getShellStateFromFiles) where
import Abstract
import qualified GFC
import PGrammar
import TypeCheck
import Compile
import ShellState
import Modules
import ReadFiles (isOldFile)
import Option
import Operations
import UseIO
import Arch
import Monad (liftM)
-- | a heuristic way of renaming constants is used
string2absTerm :: String -> String -> Term
string2absTerm m = renameTermIn m . pTrm
renameTermIn :: String -> Term -> Term
renameTermIn m = refreshMetas [] . rename [] where
rename vs t = case t of
Abs x b -> Abs x (rename (x:vs) b)
Vr c -> if elem c vs then t else Q (zIdent m) c
App f a -> App (rename vs f) (rename vs a)
_ -> t
string2annotTree :: GFC.CanonGrammar -> Ident -> String -> Err Tree
string2annotTree gr m = annotate gr . string2absTerm (prt m) ---- prt
----string2paramList :: ConcreteST -> String -> [Term]
---string2paramList st = map (renameTrm (lookupConcrete st) . patt2term) . pPattList
shellStateFromFiles :: Options -> ShellState -> FilePath -> IOE ShellState
shellStateFromFiles opts st file = case fileSuffix file of
"gfcm" -> do
cenv <- compileOne opts (compileEnvShSt st []) file
ioeErr $ updateShellState opts Nothing st cenv
s | elem s ["cf","ebnf"] -> do
let osb = addOptions (options []) opts
grts <- compileModule osb st file
ioeErr $ updateShellState opts Nothing st grts
_ -> do
b <- ioeIO $ isOldFile file
let opts' = if b then (addOption showOld opts) else opts
let osb = if oElem showOld opts'
then addOptions (options []) opts' -- for old no emit
else addOptions (options [emitCode]) opts'
grts <- compileModule osb st file
let top = identC $ justModuleName file
ioeErr $ updateShellState opts' (Just top) st grts
--- liftM (changeModTimes rts) $ grammar2shellState opts gr
getShellStateFromFiles :: Options -> FilePath -> IO ShellState
getShellStateFromFiles os =
useIOE emptyShellState .
shellStateFromFiles os emptyShellState
|
