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Commit | Line | Data |
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c194f84c | 1 | module PursLoader.Loader |
1983893b | 2 | ( Effects() |
c194f84c | 3 | , loader |
4 | , loaderFn | |
5 | ) where | |
6 | ||
03b840cb | 7 | import Prelude (Unit(), ($), (<>), (>>=), (<$>), (++), bind, flip, id, pure, return, unit) |
8 | ||
c194f84c | 9 | import Control.Monad.Aff (Aff(), runAff) |
10 | import Control.Monad.Eff (Eff()) | |
11 | import Control.Monad.Eff.Class (liftEff) | |
12 | import Control.Monad.Eff.Exception (error) | |
13 | ||
0e1221d7 | 14 | import Data.Array ((!!), concat) |
c194f84c | 15 | import Data.Function (Fn2(), mkFn2) |
16 | import Data.Maybe (Maybe(..), fromMaybe, maybe) | |
0e1221d7 | 17 | import Data.String (joinWith) |
3610dff1 | 18 | import Data.String.Regex (match, noFlags, regex, test) |
07de44be | 19 | import Data.Traversable (sequence) |
c194f84c | 20 | |
21 | import PursLoader.ChildProcess (ChildProcess(), spawn) | |
3610dff1 | 22 | import PursLoader.FS (FS(), writeFileUtf8, findFileUtf8) |
0e1221d7 | 23 | import PursLoader.Glob (Glob(), globAll) |
3610dff1 | 24 | import PursLoader.LoaderRef (LoaderRef(), Loader(), async, cacheable, query, clearDependencies, addDependency, resourcePath) |
0e1221d7 | 25 | import PursLoader.LoaderUtil (parseQuery) |
26 | import PursLoader.Options (loaderFFIOption, loaderSrcOption, pscOptions) | |
c194f84c | 27 | |
0e1221d7 | 28 | type Effects eff = (cp :: ChildProcess, fs :: FS, glob :: Glob, loader :: Loader | eff) |
c194f84c | 29 | |
30 | moduleRegex = regex "(?:^|\\n)module\\s+([\\w\\.]+)" noFlags { ignoreCase = true } | |
31 | ||
3610dff1 | 32 | foreignRegex = regex "(?:^|\\n)\\s*foreign import\\s+" noFlags { ignoreCase = true } |
33 | ||
1983893b | 34 | pscCommand = "psc" |
c194f84c | 35 | |
0e1221d7 | 36 | psciCommand = "psci" |
37 | ||
38 | psciFilename = ".psci" | |
39 | ||
c194f84c | 40 | (!!!) = flip (!!) |
41 | ||
03b840cb | 42 | foreign import cwd :: String |
0e1221d7 | 43 | |
03b840cb | 44 | foreign import relative :: String -> String -> String |
0e1221d7 | 45 | |
07de44be | 46 | foreign import resolve :: String -> String |
47 | ||
03b840cb | 48 | mkPsci :: Array (Array String) -> Array (Array String) -> String |
0e1221d7 | 49 | mkPsci srcs ffis = joinWith "\n" ((loadModule <$> concat srcs) <> (loadForeign <$> concat ffis)) |
50 | where | |
51 | loadModule :: String -> String | |
52 | loadModule a = ":m " ++ relative cwd a | |
53 | ||
54 | loadForeign :: String -> String | |
55 | loadForeign a = ":f " ++ relative cwd a | |
56 | ||
03b840cb | 57 | findFFI :: forall eff. Array (Array String) -> String -> Aff (fs :: FS | eff) (Maybe String) |
3610dff1 | 58 | findFFI ffiss name = findFileUtf8 re (concat ffiss) |
59 | where | |
60 | re = regex ("(?:^|\\n)//\\s*module\\s*" ++ name ++ "\\s*\\n") noFlags | |
61 | ||
1983893b | 62 | loader' :: forall eff. LoaderRef -> String -> Aff (Effects eff) (Maybe String) |
c194f84c | 63 | loader' ref source = do |
64 | liftEff $ cacheable ref | |
65 | ||
0e1221d7 | 66 | let parsed = parseQuery $ query ref |
1983893b | 67 | srcs = fromMaybe [] (loaderSrcOption parsed) |
0e1221d7 | 68 | ffis = fromMaybe [] (loaderFFIOption parsed) |
1983893b | 69 | opts = pscOptions parsed |
c194f84c | 70 | |
0e1221d7 | 71 | srcss <- globAll srcs |
72 | ffiss <- globAll ffis | |
73 | ||
74 | let psciFile = mkPsci srcss ffiss | |
75 | ||
76 | writeFileUtf8 psciFilename psciFile | |
77 | ||
03b840cb | 78 | let moduleName = match moduleRegex source >>= (!!!) 1 >>= id |
3610dff1 | 79 | hasForeign = test foreignRegex source |
0e1221d7 | 80 | result = (\a -> "module.exports = require('" ++ a ++ "');") <$> moduleName |
81 | ||
3610dff1 | 82 | liftEff (clearDependencies ref) |
83 | liftEff (addDependency ref (resourcePath ref)) | |
07de44be | 84 | liftEff (sequence $ (\src -> addDependency ref (resolve src)) <$> concat srcss) |
3610dff1 | 85 | |
86 | foreignPath <- if hasForeign | |
87 | then fromMaybe (pure Nothing) (findFFI ffiss <$> moduleName) | |
88 | else pure Nothing | |
89 | ||
90 | fromMaybe (pure unit) ((\path -> liftEff (addDependency ref path)) <$> foreignPath) | |
91 | ||
bbd2a7af | 92 | spawn pscCommand (srcs <> opts) |
93 | ||
1983893b | 94 | return result |
c194f84c | 95 | |
1983893b | 96 | loader :: forall eff. LoaderRef -> String -> Eff (Effects eff) Unit |
c194f84c | 97 | loader ref source = do |
98 | callback <- async ref | |
99 | runAff (\e -> callback (Just e) "") | |
1983893b | 100 | (maybe (callback (Just (error "Loader has failed to run")) "") |
c194f84c | 101 | (callback Nothing)) |
102 | (loader' ref source) | |
103 | ||
1983893b | 104 | loaderFn :: forall eff. Fn2 LoaderRef String (Eff (Effects eff) Unit) |
c194f84c | 105 | loaderFn = mkFn2 loader |