ddc-driver-0.4.3.1: DDC/Driver/Command/Trans.hs
{-# OPTIONS -Werror #-}
module DDC.Driver.Command.Trans
( cmdTransDetect
, cmdTransModule
, cmdTransExp
, cmdTransExpCont
, transExp)
where
import DDC.Driver.Config
import DDC.Driver.Output
import DDC.Driver.Command.Check
import DDC.Driver.Interface.Source
import DDC.Build.Language
import DDC.Build.Pipeline
import DDC.Core.Transform.Reannotate
import DDC.Core.Load
import DDC.Core.Fragment
import DDC.Core.Simplifier
import DDC.Core.Module
import DDC.Core.Exp.Annot
import DDC.Type.Exp.Simple
import DDC.Data.Pretty
import DDC.Data.Name
import Data.Typeable
import Control.Monad
import Control.Monad.Trans.Except
import Control.Monad.IO.Class
import DDC.Core.Env.EnvX (EnvX)
import qualified DDC.Core.Check as C
import qualified Control.Monad.State.Strict as S
import qualified Data.Map.Strict as Map
import qualified DDC.Core.Env.EnvX as EnvX
import Prelude hiding ((<$>))
-- Detect -----------------------------------------------------------------------------------------
-- | Load and transform a module or expression, and print the result to @stdout@.
--
-- If the source starts with the 'module' keyword then treat it as one,
-- otherwise treat it as an expression.
--
cmdTransDetect
:: Config -- ^ Driver config.
-> Language -- ^ Language definition.
-> Bool -- ^ Print transform info.
-> Source -- ^ Source of the code.
-> String -- ^ Input text.
-> ExceptT String IO ()
cmdTransDetect config language shouldPrintInfo
source str
| "module" : _ <- words str
= cmdTransModule config language shouldPrintInfo
source str
| otherwise
= cmdTransExp config language shouldPrintInfo
source str
-- Module -----------------------------------------------------------------------------------------
-- | Load and transform a module, and print the result to @stdout@.
cmdTransModule
:: Config -- ^ Driver config.
-> Language -- ^ Language definition.
-> Bool -- ^ Print transform info.
-> Source -- ^ Source of the code.
-> String -- ^ Input text.
-> ExceptT String IO ()
cmdTransModule config language _shouldPrintInfo source str
| Language bundle <- language
, fragment <- bundleFragment bundle
, simpl <- bundleSimplifier bundle
, zero <- bundleStateInit bundle
= let
pmode = prettyModeOfConfig $ configPretty config
pipeTrans
= pipeText (nameOfSource source) (lineStartOfSource source) str
$ PipeTextLoadCore fragment
(if configInferTypes config then C.Synth [] else C.Recon)
SinkDiscard
[ PipeCoreReannotate (\a -> a { annotTail = ()})
[ PipeCoreSimplify fragment zero simpl
[ PipeCoreCheck fragment C.Recon SinkDiscard
[ PipeCoreOutput pmode SinkStdout ]]]]
in do
errs <- liftIO pipeTrans
case errs of
[] -> return ()
es -> throwE $ renderIndent $ vcat $ map ppr es
-- Exp --------------------------------------------------------------------------------------------
-- | Load and transfrom an expression
-- and print the result to @stdout@.
cmdTransExp
:: Config -- ^ Driver config.
-> Language -- ^ Source language.
-> Bool -- ^ Print transform info.
-> Source -- ^ Source of input text.
-> String -- ^ Input text.
-> ExceptT String IO ()
cmdTransExp config language traceTrans
source str
= liftIO
$ cmdTransExpCont config traceTrans language
(\_ -> return ())
source str
-- Cont -------------------------------------------------------------------------------------------
-- | Load an expression and apply the current transformation.
cmdTransExpCont
:: Config -- ^ Driver config.
-> Bool
-> Language
-> (forall n. Typeable n
=> Exp (AnTEC () n) n -> IO ())
-> Source
-> String
-> IO ()
cmdTransExpCont _config traceTrans language eatExp source str
| Language bundle <- language
, fragment <- bundleFragment bundle
, modules <- bundleModules bundle
, simpl <- bundleSimplifier bundle
, zero <- bundleStateInit bundle
, profile <- fragmentProfile fragment
= cmdParseCheckExp fragment modules Recon False False source str
>>= goStore profile modules zero simpl
where
-- Expression is well-typed.
goStore profile modules zero simpl (Just x, _)
= do
let env = modulesEnvX
(profilePrimKinds profile)
(profilePrimTypes profile)
(profilePrimDataDefs profile)
(Map.elems modules)
tr <- transExp traceTrans profile env zero simpl
$ reannotate (\a -> a { annotTail = ()}) x
case tr of
Nothing -> return ()
Just x'
-> do outDocLn $ ppr x'
eatExp x'
-- Expression had a parse or type error.
goStore _ _ _ _ _
= do return ()
-- Trans ------------------------------------------------------------------------------------------
-- | Transform an expression, or display errors
transExp
:: (Ord n, Pretty n, Show n, CompoundName n)
=> Bool -- ^ Trace transform information.
-> Profile n -- ^ Language profile.
-> EnvX n
-> s
-> Simplifier s (AnTEC () n) n
-> Exp (AnTEC () n) n
-> IO (Maybe (Exp (AnTEC () n) n))
transExp traceTrans profile env zero simpl xx
= do
let annot = annotOfExp xx
let t1 = annotType annot
let eff1 = annotEffect annot
let kenv = EnvX.kindEnvOfEnvX env
let tenv = EnvX.typeEnvOfEnvX env
let envt = EnvX.envxEnvT env
-- Apply the simplifier.
let tx = flip S.evalState zero
$ applySimplifierX profile kenv tenv simpl xx
let x' = reannotate (const ()) $ result tx
when (traceTrans)
$ case (resultInfo tx) of
TransformInfo inf
-> outDocLn
$ text "* TRANSFORM INFORMATION: " <$> indent 4 (ppr inf) <$> text ""
let config = C.configOfProfile profile
let rr = C.checkExp config env Recon C.DemandNone x'
-- Check that the simplifier perserved the type of the expression.
case fst rr of
Right (x2, t2, eff2)
| equivT envt t1 t2
, subsumesT envt kEffect eff1 eff2
-> do return (Just x2)
| otherwise
-> do outDocLn $ vcat
[ text "* CRASH AND BURN: Transform is not type preserving."
, ppr x'
, text ":: 1 " <+> ppr t1
, text ":: 2 " <+> ppr t2
, text ":!:1 " <+> ppr eff1
, text ":!:2 " <+> ppr eff2 ]
return Nothing
Left err
-> do outDocLn $ vcat
[ text "* CRASH AND BURN: Type error in transformed program."
, ppr err
, text "" ]
outDocLn $ text "Transformed expression:"
outDocLn $ ppr x'
return Nothing