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
58
59
60
61
62
63
64
65
66
|
{-# LANGUAGE ScopedTypeVariables #-}
module Main where
import System.Environment
import NameCache
import SrcLoc
import UniqSupply
import Name
import HieBin
import HieTypes
import HieUtils
import DynFlags
import SysTools
import qualified Data.Map as M
import Data.Foldable
foo :: Maybe Char -> Char
foo Nothing = 'a'
-- 1^
foo (Just c) | c == 'a' = c
-- 2^ 3^
foo x = 'b'
-- 4^
p1,p2,p3,p4 :: (Int,Int)
p1 = (22,6)
p2 = (24,5)
p3 = (24,11)
p4 = (26,5)
makeNc :: IO NameCache
makeNc = do
uniq_supply <- mkSplitUniqSupply 'z'
return $ initNameCache uniq_supply []
dynFlagsForPrinting :: String -> IO DynFlags
dynFlagsForPrinting libdir = do
systemSettings <- initSysTools libdir
return $ defaultDynFlags systemSettings (LlvmConfig [] [])
selectPoint :: HieFile -> (Int,Int) -> HieAST Int
selectPoint hf (sl,sc) = case M.toList (getAsts $ hie_asts hf) of
[(fs,ast)] ->
case selectSmallestContaining (sp fs) ast of
Nothing -> error "point not found"
Just ast' -> ast'
_ -> error "map should only contain a single AST"
where
sloc fs = mkRealSrcLoc fs sl sc
sp fs = mkRealSrcSpan (sloc fs) (sloc fs)
main = do
libdir:_ <- getArgs
df <- dynFlagsForPrinting libdir
nc <- makeNc
(hfr, nc') <- readHieFile nc "PatTypes.hie"
let hf = hie_file_result hfr
forM_ [p1,p2,p3,p4] $ \point -> do
putStr $ "At " ++ show point ++ ", got type: "
let types = nodeType $ nodeInfo $ selectPoint hf point
forM_ types $ \typ -> do
putStrLn (renderHieType df $ recoverFullType typ (hie_types hf))
|
