git.iko.soy/elk
on 32a331b help sign in
elk/compiler/SourceSyntax/Module.hs
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1{-# LANGUAGE DeriveDataTypeable #-}
2module SourceSyntax.Module where
4import Data.Data
5import Data.Binary
6import Data.List (intercalate)
7import qualified Data.Map as Map
8import Control.Applicative ((<$>), (<*>))
9import Control.Arrow (second)
11import SourceSyntax.Expression (LExpr)
12import SourceSyntax.Declaration
13import SourceSyntax.Type
14import System.FilePath (joinPath)
15import qualified Type.Type as Type
17data Module tipe var =
18 Module [String] Exports Imports [Declaration tipe var]
19 deriving (Show)
21type Exports = [String]
23type Imports = [(String, ImportMethod)]
24data ImportMethod = As String | Importing [String] | Hiding [String]
25 deriving (Eq, Ord, Show, Data, Typeable)
27data MetadataModule t v = MetadataModule {
28 names :: [String],
29 path :: FilePath,
30 exports :: [String],
31 imports :: [(String, ImportMethod)],
32 program :: LExpr t v,
33 types :: Map.Map String Type.Variable,
34 fixities :: [(Assoc, Int, String)],
35 aliases :: [(String, [String], Type)],
36 datatypes :: [ (String, [String], [(String,[Type])]) ],
37 foreignImports :: [(String, LExpr t v, String, Type)],
38 foreignExports :: [(String, String, Type)]
41type Interfaces = Map.Map String ModuleInterface
42type ADT = (String, [String], [(String,[Type])])
44data ModuleInterface = ModuleInterface {
45 iTypes :: Map.Map String Type,
46 iAdts :: [ADT]
47} deriving Show
49instance Binary ModuleInterface where
50 put modul = put (iTypes modul) >> put (iAdts modul)
51 get = ModuleInterface <$> get <*> get
54canonicalize :: String -> ImportMethod -> ModuleInterface -> ModuleInterface
55canonicalize prefix importMethod interface =
56 let addPrefix name = prefix ++ "." ++ name
58 newName (tipe,_,_) =
59 case importMethod of
60 As name -> (tipe, name ++ "." ++ tipe)
61 Hiding vs -> (tipe, if tipe `elem` vs then addPrefix tipe else tipe)
62 Importing vs -> (tipe, if tipe `elem` vs then tipe else addPrefix tipe)
63 newNames = Map.fromList . map newName $ iAdts interface
65 rename name = Map.findWithDefault name name newNames
67 renameADT (name, tvars, ctors) =
68 (rename name, tvars, map (second (map (renameType rename))) ctors)
69 in ModuleInterface {
70 iTypes = Map.map (renameType rename) (iTypes interface),
71 iAdts = map renameADT (iAdts interface)
72 }
74renameType :: (String -> String) -> Type -> Type
75renameType find tipe =
76 let rnm = renameType find in
77 case tipe of
78 Lambda a b -> Lambda (rnm a) (rnm b)
79 Var x -> Var x
80 Data name ts -> Data (find name) (map rnm ts)
81 EmptyRecord -> EmptyRecord
82 Record fields ext -> Record (Map.map (map rnm) fields) (rnm ext)