purescript-bridge (empty) → 0.1.0.0

raw patch · 11 files changed

+1171/−0 lines, 11 filesdep +Cabaldep +HUnitdep +basesetup-changed

Dependencies added: Cabal, HUnit, base, containers, filepath, generic-deriving, purescript-bridge, text

Files

• LICENSE +661/−0
• Setup.hs +2/−0
• dist/build/testsStub/testsStub-tmp/testsStub.hs +5/−0
• purescript-bridge.cabal +88/−0
• src/PureScript/Bridge.hs +56/−0
• src/PureScript/Bridge/Primitives.hs +55/−0
• src/PureScript/Bridge/Printer.hs +100/−0
• src/PureScript/Bridge/SumType.hs +85/−0
• src/PureScript/Bridge/Tuple.hs +39/−0
• src/PureScript/Bridge/TypeInfo.hs +44/−0
• test/Tests.hs +36/−0

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@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,5 @@+module Main ( main ) where+import Distribution.Simple.Test.LibV09 ( stubMain )+import Tests ( tests )+main :: IO ()+main = stubMain tests

@@ -0,0 +1,88 @@+-- Initial purescript-bridge.cabal generated by cabal init.  For further+-- documentation, see http://haskell.org/cabal/users-guide/++-- The name of the package.+name:                purescript-bridge++-- The package version.  See the Haskell package versioning policy (PVP)+-- for standards guiding when and how versions should be incremented.+-- http://www.haskell.org/haskellwiki/Package_versioning_policy+-- PVP summary:      +-+------- breaking API changes+--                   | | +----- non-breaking API additions+--                   | | | +--- code changes with no API change+version:             0.1.0.0++-- A short (one-line) description of the package.+synopsis:            Generate PureScript data types from Haskell data types++-- A longer description of the package.+-- description:++-- The license under which the package is released.+license:             AGPL-3++-- The file containing the license text.+license-file:        LICENSE++-- The package author(s).+author:              Robert Klotzner++-- An email address to which users can send suggestions, bug reports, and+-- patches.+maintainer:          robert.klotzner@gmx.at++-- A copyright notice.+-- copyright:++category:            Web++build-type:          Simple++-- Extra files to be distributed with the package, such as examples or a+-- README.+-- extra-source-files:++-- Constraint on the version of Cabal needed to build this package.+cabal-version:       >=1.10++source-repository head+  type:     git+  location: https://github.com/eskimor/purescript-bridge.git++library+  -- Modules exported by the library.+  exposed-modules: PureScript.Bridge.SumType+                , PureScript.Bridge.TypeInfo+                , PureScript.Bridge.Tuple+                , PureScript.Bridge.Primitives+                , PureScript.Bridge+                , PureScript.Bridge.Printer++  -- Modules included in this library but not exported.+  -- other-modules:++  -- LANGUAGE extensions used by modules in this package.+  -- other-extensions:++  -- Other library packages from which modules are imported.+  build-depends:       base >=4.8 && <4.9+                     , containers+                     , filepath+                     , text+                     , generic-deriving++  ghc-options:       -Wall++  -- Directories containing source files.+  hs-source-dirs:      src++  -- Base language which the package is written in.+  default-language:    Haskell2010++Test-Suite tests+    type:       detailed-0.9+    test-module: Tests+    build-depends: base, Cabal >= 1.9.2+                , HUnit+                , purescript-bridge+    hs-source-dirs: test

@@ -0,0 +1,56 @@+{-# LANGUAGE OverloadedStrings #-}+module PureScript.Bridge (+    bridgeSumType+  , defaultBridge+ ) where+++import Data.Text (Text)+import qualified Data.Text as T+import Data.Monoid++import PureScript.Bridge.SumType+import PureScript.Bridge.TypeInfo+import PureScript.Bridge.Tuple+import PureScript.Bridge.Primitives+++import Control.Applicative+import Data.Maybe++bridgeSumType :: TypeBridge -> SumType -> SumType+bridgeSumType br (SumType t cs) = SumType t . map (bridgeConstructor br) $ cs++{--+ -- Optimistically and recursively translate types: If the passed TypeBridge returns Nothing,+ -- then the original TypeInfo is returned with the typePackage field cleared.+ -- You don't need to call this function directly, just use bridgeSumType with your TypeBridge+--}+doBridge :: TypeBridge -> TypeInfo -> TypeInfo+doBridge br info = let+    translated = info { typePackage = "" }+    res = fromMaybe translated (br info)+  in+    res {+      typeParameters = map (doBridge br) . typeParameters $ res+    }++-- | Default bridge for mapping primitive/common types:+-- | You can append your own bridges like this:+-- | defaultBridge <|> myBridge1 <|> myBridge2+defaultBridge :: TypeBridge+defaultBridge t = stringBridge t+  <|> listBridge t+  <|> maybeBridge t+  <|> eitherBridge t+  <|> intBridge t+  <|> tupleBridge t++bridgeConstructor :: TypeBridge -> DataConstructor -> DataConstructor+bridgeConstructor br (DataConstructor name (Left infos)) =+    DataConstructor name . Left $ map (doBridge br) infos+bridgeConstructor br (DataConstructor name (Right record)) =+    DataConstructor name . Right $ map (bridgeRecordEntry br) record++bridgeRecordEntry :: TypeBridge -> RecordEntry -> RecordEntry+bridgeRecordEntry br (RecordEntry label value) = RecordEntry label $ doBridge br value

@@ -0,0 +1,55 @@+{-# LANGUAGE OverloadedStrings #-}+module PureScript.Bridge.Primitives where+++import PureScript.Bridge.TypeInfo+++intBridge :: TypeBridge+intBridge t+  | eqTypeName "Int" t = Just $ t {+      typePackage = "purescript-prim"+    , typeModule = "Prim"+    }+  | otherwise = Nothing+++stringBridge :: TypeBridge+stringBridge t+  | isStringLike = Just $ t {+      typePackage = "purescript-prim"+    , typeModule = "Prim"+    , typeName = "String"+    , typeParameters = []+    }+  | otherwise = Nothing+  where+    isStringLike = isText || isString+    isText = typeName t == "Text" && typePackage t == "text"+    isString = typeName t == "[]" && all ((==) "Char" . typeName) (typeParameters t)++listBridge :: TypeBridge+listBridge t+  | eqTypeName "[]" t = Just $ t {+      typePackage = "purescript-prim"+    , typeModule = "Prim"+    , typeName = "Array"+    }+  | otherwise = Nothing++maybeBridge :: TypeBridge+maybeBridge t+  | eqTypeName "Maybe" t = Just $ t {+      typePackage = "purescript-maybe"+    , typeModule = "Data.Maybe"+    }+  | otherwise = Nothing+++eitherBridge :: TypeBridge+eitherBridge t+  | eqTypeName "Either" t = Just $ t {+      typePackage = "purescript-either"+    , typeModule = "Data.Either"+    }+  | otherwise = Nothing

@@ -0,0 +1,100 @@+{-# LANGUAGE OverloadedStrings #-}+module PureScript.Bridge.Printer where++import Data.Map.Strict (Map)+import qualified Data.Map.Strict as M+import Data.Monoid+import Data.Set (Set)+import qualified Data.Set as S+import Data.Text (Text)+import qualified Data.Text as T+import qualified Data.Text.IO as T+import System.FilePath+++import PureScript.Bridge.SumType+import PureScript.Bridge.TypeInfo+++data PSModule = PSModule {+  psModuleName :: Text+, psImportLines :: Map Text ImportLine+, psTypes :: [SumType]+} deriving Show++data ImportLine = ImportLine {+  importModule :: Text+, importTypes :: Set Text+} deriving Show++type Modules = Map Text PSModule+type ImportLines = Map Text ImportLine++printModule :: FilePath -> PSModule -> IO ()+printModule root m = T.writeFile mPath . moduleToText $ m+  where+    mFile = joinPath . map T.unpack . T.splitOn "." $ psModuleName m+    mPath = root </> mFile++moduleToText :: PSModule -> Text+moduleToText m = T.unlines $+  "module " <> psModuleName m <> "where\n"+  : map importLineToText (M.elems (psImportLines m))+  ++ [ "\n\n" ]+  ++ map sumTypeToText (psTypes m)+++importLineToText :: ImportLine -> Text+importLineToText l = "import " <> importModule l <> "(" <> typeList <> ")"+  where+    typeList = T.intercalate ", " (S.toList (importTypes l))++sumTypeToText :: SumType -> Text+sumTypeToText (SumType t cs) = T.unlines $+    "data " <> typeName t <> "="+  : [ "    " <> T.intercalate "  | " (map (constructorToText 4) cs) ]++constructorToText :: Int -> DataConstructor -> Text+constructorToText _ (DataConstructor n (Left ts))  = n <> T.intercalate " " (map typeInfoToText ts)+constructorToText indentation (DataConstructor n (Right rs)) = T.unlines $+      n <> " {"+    : [spaces (indentation + 2) <> T.intercalate intercalation (map recordEntryToText rs)]+    ++ [ spaces indentation <> "}" ]+  where+    intercalation = "\n" <> spaces indentation <> "," <> spaces 2+    spaces c = T.replicate c " "++recordEntryToText :: RecordEntry -> Text+recordEntryToText e = recLabel e <> " :: " <> typeInfoToText (recValue e)+++typeInfoToText :: TypeInfo -> Text+typeInfoToText t = if length textParameters > 1 then "(" <> inner <> ")" else inner+  where+    inner = typeName t <> T.intercalate " " textParameters+    textParameters = map typeInfoToText (typeParameters t)++sumTypesToModules :: Modules -> [SumType] -> Modules+sumTypesToModules = foldr sumTypeToModule++sumTypeToModule :: SumType -> Modules -> Modules+sumTypeToModule st@(SumType t _) = M.alter (Just. updateModule) (typeModule t)+  where+    updateModule Nothing = PSModule {+          psModuleName = typeModule t+        , psImportLines = typesToImportLines M.empty (getUsedTypes st)+        , psTypes = [st]+        }+    updateModule (Just m) = m {+        psImportLines = typesToImportLines (psImportLines m) (getUsedTypes st)+      , psTypes = st : psTypes m+      }++typesToImportLines :: ImportLines -> [TypeInfo] -> ImportLines+typesToImportLines = foldr typeToImportLines++typeToImportLines :: TypeInfo -> ImportLines -> ImportLines+typeToImportLines t = M.alter (Just . updateLine) (typeModule t)+  where+    updateLine Nothing = ImportLine (typeModule t) (S.singleton (typeName t))+    updateLine (Just (ImportLine m types)) = ImportLine m $ S.insert (typeName t) types

@@ -0,0 +1,85 @@+{-# LANGUAGE FlexibleContexts #-}+{-# LANGUAGE FlexibleInstances #-}+{-# LANGUAGE ScopedTypeVariables #-}+{-# LANGUAGE TypeOperators #-}+{-# LANGUAGE TypeSynonymInstances #-}+++{-# LANGUAGE DeriveGeneric #-}+++module PureScript.Bridge.SumType where++import Generics.Deriving+import Data.Text (Text)+import qualified Data.Text as T+import Data.Proxy+import Data.Typeable++import PureScript.Bridge.TypeInfo++data SumType = SumType TypeInfo [DataConstructor] deriving Show++data DataConstructor = DataConstructor {+  sigConstructor :: Text+, sigValues :: Either [TypeInfo] [RecordEntry]+} deriving Show++data RecordEntry = RecordEntry {+  recLabel :: Text+, recValue :: TypeInfo+} deriving Show++toSumType :: forall t. (Generic t, Typeable t, GDataConstructor (Rep t)) => Proxy t -> SumType+toSumType p = SumType  (mkTypeInfo p) constructors+  where+    constructors = gToConstructors (from (undefined :: t))++class GDataConstructor f where+  gToConstructors :: f a -> [DataConstructor]++class GRecordEntry f where+  gToRecordEntries :: f a -> [RecordEntry]++instance (Datatype a, GDataConstructor c) =>  GDataConstructor (D1 a c) where+  gToConstructors (M1 c) = gToConstructors c++instance (GDataConstructor a, GDataConstructor b) => GDataConstructor (a :+: b) where+  gToConstructors (_ :: (a :+: b) f) = gToConstructors (undefined :: a f) ++ gToConstructors (undefined :: b f)++instance (Constructor a, GRecordEntry b) => GDataConstructor (C1 a b) where+  gToConstructors c@(M1 r) = [+        DataConstructor {+          sigConstructor = constructor+        , sigValues = values+        }+      ]+    where+      constructor = T.pack $ conName c+      values = if conIsRecord c+        then Right $ gToRecordEntries r+        else Left $ map recValue $ gToRecordEntries r++instance (GRecordEntry a, GRecordEntry b) => GRecordEntry (a :*: b) where+  gToRecordEntries (_ :: (a :*: b) f) = gToRecordEntries (undefined :: a f) ++ gToRecordEntries (undefined :: b f)+++instance GRecordEntry U1 where+  gToRecordEntries _ = []++instance (Selector a, Typeable t) => GRecordEntry (S1 a (K1 R t)) where+  gToRecordEntries e = [+      RecordEntry { recLabel = T.pack (selName e)+      , recValue = mkTypeInfo (Proxy :: Proxy t)+      }+    ]++getUsedTypes :: SumType -> [TypeInfo]+getUsedTypes (SumType _ cs) = foldr constructorToType [] cs++constructorToType :: DataConstructor -> [TypeInfo] -> [TypeInfo]+constructorToType (DataConstructor _ (Left myTs)) ts = concatMap flattenTypeInfo myTs ++ ts+constructorToType (DataConstructor _ (Right rs))  ts = concatMap (flattenTypeInfo . recValue) rs ++ ts++flattenTypeInfo :: TypeInfo -> [TypeInfo]+flattenTypeInfo t = t : concatMap flattenTypeInfo (typeParameters t)

@@ -0,0 +1,39 @@+{-# LANGUAGE OverloadedStrings #-}+module PureScript.Bridge.Tuple where++import Data.Monoid+import Data.Text (Text)+import qualified Data.Text as T+++import PureScript.Bridge.TypeInfo++data TupleParserState =+  Start | OpenFound | ColonFound | Tuple | NoTuple deriving (Eq, Show)+++tupleBridge :: TypeBridge+tupleBridge t+  | isTuple (typeName t) = Just $ t {+      typePackage = "purescript-tuples"+    , typeModule = if size == 2 then "Data.Tuple" else "Data.Tuple.Nested"+    , typeName = "Tuple" <> if size == 2 then "" else T.pack (show size)+    }+  | otherwise = Nothing+  where+    size = length $ typeParameters t+++step :: TupleParserState -> Char -> TupleParserState+step Start '(' = OpenFound+step Start _ = NoTuple+step OpenFound ',' = ColonFound+step OpenFound _ = NoTuple+step ColonFound ',' = ColonFound+step ColonFound ')' = Tuple+step ColonFound _ = NoTuple+step Tuple _ = NoTuple+step NoTuple _ = NoTuple++isTuple :: Text -> Bool+isTuple = (== Tuple) . T.foldl' step Start

@@ -0,0 +1,44 @@+{-# LANGUAGE OverloadedStrings #-}++module PureScript.Bridge.TypeInfo where+++import Data.Text (Text)+import qualified Data.Text as T+import Data.Maybe+import Data.Proxy+import Data.Typeable+++-- Translates a Haskell type info to a PureScript type info:+type TypeBridge = TypeInfo -> Maybe TypeInfo+++-- Basic info about a data type:+data TypeInfo = TypeInfo {+  -- | Hackage package+  typePackage :: Text+  -- | Full Module path+, typeModule :: Text+, typeName :: Text+, typeParameters :: [TypeInfo]+} deriving (Eq, Show)++mkTypeInfo :: Typeable t => Proxy t -> TypeInfo+mkTypeInfo = mkTypeInfo' . typeRep++mkTypeInfo' :: TypeRep -> TypeInfo+mkTypeInfo' rep = let+    con = typeRepTyCon rep+  in TypeInfo {+    typePackage = T.pack $ tyConPackage con+  , typeModule = T.pack $ tyConModule con+  , typeName = T.pack $ tyConName con+  , typeParameters = map mkTypeInfo' (typeRepArgs rep)+  }++++-- Little helper for type bridge implementers+eqTypeName :: Text -> TypeInfo -> Bool+eqTypeName name = (== name) . typeName

@@ -0,0 +1,36 @@+{-# LANGUAGE OverloadedStrings #-}+module Tests (tests) where+++import Distribution.TestSuite as T+import Test.HUnit+++import Data.Proxy+import PureScript.Bridge.TypeInfo+++testTypeInfo :: IO Progress+testTypeInfo = do+  let expected = TypeInfo {+    typePackage = "ghc-prim"+  , typeModule = "GHC.Types"+  , typeName = "Int"+  , typeParameters = []+  }+  let tests = test ["Int Test" ~: expected ~=? mkTypeInfo (Proxy :: Proxy Int)]+  r <- runTestTT tests+  return $ if errors r == 0+    then Finished Pass+    else Finished $ Fail (show r)++tests :: IO [T.Test]+tests = return [ Test test1]+  where+    test1 = TestInstance+        { run = testTypeInfo+        , name = "Test TypeInfo code"+        , tags = []+        , options = []+        , setOption = \_ _ -> Right test1+        }