git.iko.soy/elk
on c19ccfe 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 ((<$>), (<*>))
9import Control.Arrow (second)
11import SourceSyntax.Expression (LExpr)
12import SourceSyntax.Declaration
13import SourceSyntax.Type
14import System.FilePath (joinPath)
15import qualified Type.Type as Type
17data Module tipe var =
18 Module [String] Exports Imports [Declaration tipe var]
19 deriving (Show)
21type Exports = [String]
23type Imports = [(String, ImportMethod)]
24data ImportMethod = As String | Importing [String] | Hiding [String]
25 deriving (Eq, Ord, Show, Data, Typeable)
27data MetadataModule t v = MetadataModule {
28 names :: [String],
29 path :: FilePath,
30 exports :: [String],
31 imports :: [(String, ImportMethod)],
32 program :: LExpr t v,
33 types :: Map.Map String Type.Variable,
34 fixities :: [(Assoc, Int, String)],
35 aliases :: [(String, [String], Type)],
36 datatypes :: [ (String, [String], [(String,[Type])]) ],
37 foreignImports :: [(String, LExpr t v, String, Type)],
38 foreignExports :: [(String, String, Type)]
41type Interfaces = Map.Map String ModuleInterface
43data ModuleInterface = ModuleInterface {
44 iTypes :: Map.Map String Type,
45 iAdts :: [(String, [String], [(String,[Type])])]
46} deriving Show
48instance Binary ModuleInterface where
49 put modul = put (iTypes modul) >> put (iAdts modul)
50 get = ModuleInterface <$> get <*> get
53canonicalize :: String -> ImportMethod -> ModuleInterface -> ModuleInterface
54canonicalize prefix importMethod interface =
55 let addPrefix name = prefix ++ "." ++ name
57 newName (tipe,_,_) =
58 case importMethod of
59 As name -> (tipe, name ++ "." ++ tipe)
60 Hiding vs -> (tipe, if tipe `elem` vs then addPrefix tipe else tipe)
61 Importing vs -> (tipe, if tipe `elem` vs then tipe else addPrefix tipe)
62 newNames = Map.fromList . map newName $ iAdts interface
64 rename name = Map.findWithDefault name name newNames
66 renameADT (name, tvars, ctors) =
67 (rename name, tvars, map (second (map (renameType rename))) ctors)
68 in ModuleInterface {
69 iTypes = Map.map (renameType rename) (iTypes interface),
70 iAdts = map renameADT (iAdts interface)
71 }
73renameType :: (String -> String) -> Type -> Type
74renameType find tipe =
75 let rnm = renameType find in
76 case tipe of
77 Lambda a b -> Lambda (rnm a) (rnm b)
78 Var x -> Var x
79 Data name ts -> Data (find name) (map rnm ts)
80 EmptyRecord -> EmptyRecord
81 Record fields ext -> Record (Map.map (map rnm) fields) (rnm ext)