blob: ec2e4a78f7a280d98ce98753af431846fc156214 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
-- 1. Load a set of modules with "nothing" target
-- 2. Load it again with "interpreted" target
-- 3. Execute some code
-- a. If the recompilation checker is buggy this will die due to missing
-- code
-- b. If it's correct, it will recompile because the target has changed.
--
-- This program must be called with GHC's libdir as the single command line
-- argument.
module Main where
import GHC
import DynFlags
import MonadUtils ( MonadIO(..) )
import BasicTypes ( failed )
import Bag ( bagToList )
import System.Environment
import Control.Monad
import System.IO
main = do
[libdir] <- getArgs
runGhc (Just libdir) $ do
dflags <- getSessionDynFlags
setSessionDynFlags $ dflags { hscTarget = HscNothing
, ghcLink = LinkInMemory
, verbosity = 0 -- silence please
}
root_mod <- guessTarget "A.hs" Nothing
setTargets [root_mod]
ok <- load LoadAllTargets
when (failed ok) $ error "Couldn't load A.hs in nothing mode"
prn "target nothing: ok"
dflags <- getSessionDynFlags
setSessionDynFlags $ dflags { hscTarget = HscInterpreted }
ok <- load LoadAllTargets
when (failed ok) $ error "Couldn't load A.hs in interpreted mode"
prn "target interpreted: ok"
-- set context to module "A"
mg <- getModuleGraph
let [mod] = [ ms_mod m | m <- mg, moduleNameString (ms_mod_name m) == "A" ]
setContext [mod] []
liftIO $ hFlush stdout -- make sure things above are printed before
-- interactive output
r <- runStmt "main" RunToCompletion
case r of
RunOk _ -> prn "ok"
RunFailed -> prn "compilation failed"
RunException _ -> prn "exception"
RunBreak _ _ _ -> prn "breakpoint"
liftIO $ hFlush stdout
return ()
prn :: MonadIO m => String -> m ()
prn = liftIO . putStrLn
|
