src/Language/PureScript/Declarations.hs · rowtype-yoga/purescript-native

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1-----------------------------------------------------------------------------

2--

3-- Module : Language.PureScript.Declarations

4-- Copyright : (c) Phil Freeman 2013

5-- License : MIT

6--

7-- Maintainer : Phil Freeman <paf31@cantab.net>

8-- Stability : experimental

9-- Portability :

10--

11-- | Data types for modules and declarations

12--

13-----------------------------------------------------------------------------

15{-# LANGUAGE DeriveDataTypeable, ScopedTypeVariables #-}

17module Language.PureScript.Declarations where

19import Data.Monoid (Monoid(..), mconcat)

21import qualified Data.Data as D

23import Control.Applicative

24import Control.Monad

26import Language.PureScript.Types

27import Language.PureScript.Names

28import Language.PureScript.Kinds

29import Language.PureScript.TypeClassDictionaries

30import Language.PureScript.CodeGen.JS.AST

31import Language.PureScript.Environment

32import Language.PureScript.Traversals

34-- |

35-- A precedence level for an infix operator

36--

37type Precedence = Integer

39-- |

40-- Associativity for infix operators

41--

42data Associativity = Infixl | Infixr | Infix deriving (D.Data, D.Typeable)

44instance Show Associativity where

45 show Infixl = "infixl"

46 show Infixr = "infixr"

47 show Infix = "infix"

49-- |

50-- Source position information

51--

52data SourcePos = SourcePos

53 { -- |

54 -- Source name

55 --

56 sourceName :: String

57 -- |

58 -- Line number

59 --

60 , sourcePosLine :: Int

61 -- |

62 -- Column number

63 --

64 , sourcePosColumn :: Int

65 } deriving (D.Data, D.Typeable)

67instance Show SourcePos where

68 show sp = (sourceName sp) ++ " line " ++ show (sourcePosLine sp) ++ ", column " ++ show (sourcePosColumn sp)

70-- |

71-- Fixity data for infix operators

72--

73data Fixity = Fixity Associativity Precedence deriving (Show, D.Data, D.Typeable)

75-- |

76-- A module declaration, consisting of a module name, a list of declarations, and a list of the

77-- declarations that are explicitly exported. If the export list is Nothing, everything is exported.

78--

79data Module = Module ModuleName [Declaration] (Maybe [DeclarationRef]) deriving (Show, D.Data, D.Typeable)

81-- |

82-- An item in a list of explicit imports or exports

83--

84data DeclarationRef

85 -- |

86 -- A type constructor with data constructors

87 --

88 = TypeRef ProperName (Maybe [ProperName])

89 -- |

90 -- A value

91 --

92 | ValueRef Ident

93 -- |

94 -- A type class

95 --

96 | TypeClassRef ProperName

97 -- |

98 -- A type class instance, created during typeclass desugaring (name, class name, instance types)

99 --

100 | TypeInstanceRef Ident

101 -- |

102 -- A declaration reference with source position information

103 --

104 | PositionedDeclarationRef SourcePos DeclarationRef

105 deriving (Show, D.Data, D.Typeable)

106

107instance Eq DeclarationRef where

108 (TypeRef name dctors) == (TypeRef name' dctors') = name == name' && dctors == dctors'

109 (ValueRef name) == (ValueRef name') = name == name'

110 (TypeClassRef name) == (TypeClassRef name') = name == name'

111 (TypeInstanceRef name) == (TypeInstanceRef name') = name == name'

112 (PositionedDeclarationRef _ r) == r' = r == r'

113 r == (PositionedDeclarationRef _ r') = r == r'

114 _ == _ = False

115

116-- |

117-- The data type of declarations

118--

119data Declaration

120 -- |

121 -- A data type declaration (data or newtype, name, arguments, data constructors)

122 --

123 = DataDeclaration DataDeclType ProperName [String] [(ProperName, [Type])]

124 -- |

125 -- A minimal mutually recursive set of data type declarations

126 --

127 | DataBindingGroupDeclaration [Declaration]

128 -- |

129 -- A type synonym declaration (name, arguments, type)

130 --

131 | TypeSynonymDeclaration ProperName [String] Type

132 -- |

133 -- A type declaration for a value (name, ty)

134 --

135 | TypeDeclaration Ident Type

136 -- |

137 -- A value declaration (name, top-level binders, optional guard, value)

138 --

139 | ValueDeclaration Ident NameKind [Binder] (Maybe Guard) Value

140 -- |

141 -- A minimal mutually recursive set of value declarations

142 --

143 | BindingGroupDeclaration [(Ident, NameKind, Value)]

144 -- |

145 -- A foreign import declaration (type, name, optional inline Javascript, type)

146 --

147 | ExternDeclaration ForeignImportType Ident (Maybe JS) Type

148 -- |

149 -- A data type foreign import (name, kind)

150 --

151 | ExternDataDeclaration ProperName Kind

152 -- |

153 -- A type class instance foreign import

154 --

155 | ExternInstanceDeclaration Ident [(Qualified ProperName, [Type])] (Qualified ProperName) [Type]

156 -- |

157 -- A fixity declaration (fixity data, operator name)

158 --

159 | FixityDeclaration Fixity String

160 -- |

161 -- A module import (module name, optional set of identifiers to import, optional "qualified as"

162 -- name)

163 --

164 | ImportDeclaration ModuleName (Maybe [DeclarationRef]) (Maybe ModuleName)

165 -- |

166 -- A type class declaration (name, argument, implies, member declarations)

167 --

168 | TypeClassDeclaration ProperName [String] [(Qualified ProperName, [Type])] [Declaration]

169 -- |

170 -- A type instance declaration (name, dependencies, class name, instance types, member

171 -- declarations)

172 --

173 | TypeInstanceDeclaration Ident [(Qualified ProperName, [Type])] (Qualified ProperName) [Type] [Declaration]

174 -- |

175 -- A declaration with source position information

176 --

177 | PositionedDeclaration SourcePos Declaration

178 deriving (Show, D.Data, D.Typeable)

179

180-- |

181-- Test if a declaration is a value declaration

182--

183isValueDecl :: Declaration -> Bool

184isValueDecl ValueDeclaration{} = True

185isValueDecl (PositionedDeclaration _ d) = isValueDecl d

186isValueDecl _ = False

187

188-- |

189-- Test if a declaration is a data type or type synonym declaration

190--

191isDataDecl :: Declaration -> Bool

192isDataDecl DataDeclaration{} = True

193isDataDecl TypeSynonymDeclaration{} = True

194isDataDecl (PositionedDeclaration _ d) = isDataDecl d

195isDataDecl _ = False

196

197-- |

198-- Test if a declaration is a module import

199--

200isImportDecl :: Declaration -> Bool

201isImportDecl ImportDeclaration{} = True

202isImportDecl (PositionedDeclaration _ d) = isImportDecl d

203isImportDecl _ = False

204

205-- |

206-- Test if a declaration is a data type foreign import

207--

208isExternDataDecl :: Declaration -> Bool

209isExternDataDecl ExternDataDeclaration{} = True

210isExternDataDecl (PositionedDeclaration _ d) = isExternDataDecl d

211isExternDataDecl _ = False

212

213-- |

214-- Test if a declaration is a type class instance foreign import

215--

216isExternInstanceDecl :: Declaration -> Bool

217isExternInstanceDecl ExternInstanceDeclaration{} = True

218isExternInstanceDecl (PositionedDeclaration _ d) = isExternInstanceDecl d

219isExternInstanceDecl _ = False

220

221-- |

222-- Test if a declaration is a fixity declaration

223--

224isFixityDecl :: Declaration -> Bool

225isFixityDecl FixityDeclaration{} = True

226isFixityDecl (PositionedDeclaration _ d) = isFixityDecl d

227isFixityDecl _ = False

228

229-- |

230-- Test if a declaration is a foreign import

231--

232isExternDecl :: Declaration -> Bool

233isExternDecl ExternDeclaration{} = True

234isExternDecl (PositionedDeclaration _ d) = isExternDecl d

235isExternDecl _ = False

236

237-- |

238-- Test if a declaration is a type class or instance declaration

239--

240isTypeClassDeclaration :: Declaration -> Bool

241isTypeClassDeclaration TypeClassDeclaration{} = True

242isTypeClassDeclaration TypeInstanceDeclaration{} = True

243isTypeClassDeclaration (PositionedDeclaration _ d) = isTypeClassDeclaration d

244isTypeClassDeclaration _ = False

245

246-- |

247-- A guard is just a boolean-valued expression that appears alongside a set of binders

248--

249type Guard = Value

250

251-- |

252-- Data type for values

253--

254data Value

255 -- |

256 -- A numeric literal

257 --

258 = NumericLiteral (Either Integer Double)

259 -- |

260 -- A string literal

261 --

262 | StringLiteral String

263 -- |

264 -- A boolean literal

265 --

266 | BooleanLiteral Bool

267 -- |

268 -- A prefix -, will be desugared

269 --

270 | UnaryMinus Value

271 -- |

272 -- Binary operator application. During the rebracketing phase of desugaring, this data constructor

273 -- will be removed.

274 --

275 | BinaryNoParens (Qualified Ident) Value Value

276 -- |

277 -- Explicit parentheses. During the rebracketing phase of desugaring, this data constructor

278 -- will be removed.

279 --

280 | Parens Value

281 -- |

282 -- An array literal

283 --

284 | ArrayLiteral [Value]

285 -- |

286 -- An object literal

287 --

288 | ObjectLiteral [(String, Value)]

289 -- |

290 -- An record property accessor expression

291 --

292 | Accessor String Value

293 -- |

294 -- Partial record update

295 --

296 | ObjectUpdate Value [(String, Value)]

297 -- |

298 -- Function introduction

299 --

300 | Abs (Either Ident Binder) Value

301 -- |

302 -- Function application

303 --

304 | App Value Value

305 -- |

306 -- Variable

307 --

308 | Var (Qualified Ident)

309 -- |

310 -- Conditional (if-then-else expression)

311 --

312 | IfThenElse Value Value Value

313 -- |

314 -- A data constructor

315 --

316 | Constructor (Qualified ProperName)

317 -- |

318 -- A case expression. During the case expansion phase of desugaring, top-level binders will get

319 -- desugared into case expressions, hence the need for guards and multiple binders per branch here.

320 --

321 | Case [Value] [CaseAlternative]

322 -- |

323 -- A value with a type annotation

324 --

325 | TypedValue Bool Value Type

326 -- |

327 -- A let binding

328 --

329 | Let [Declaration] Value

330 -- |

331 -- A do-notation block

332 --

333 | Do [DoNotationElement]

334 -- |

335 -- An application of a typeclass dictionary constructor. The value should be

336 -- an ObjectLiteral.

337 --

338 | TypeClassDictionaryConstructorApp (Qualified ProperName) Value

339 -- |

340 -- A placeholder for a type class dictionary to be inserted later. At the end of type checking, these

341 -- placeholders will be replaced with actual expressions representing type classes dictionaries which

342 -- can be evaluated at runtime. The constructor arguments represent (in order): whether or not to look

343 -- at superclass implementations when searching for a dictionary, the type class name and

344 -- instance type, and the type class dictionaries in scope.

345 --

346 | TypeClassDictionary Bool (Qualified ProperName, [Type]) [TypeClassDictionaryInScope]

347 -- |

348 -- A placeholder for a superclass dictionary to be turned into a TypeClassDictionary during typechecking

349 --

350 | SuperClassDictionary (Qualified ProperName) [Type]

351 -- |

352 -- A value with source position information

353 --

354 | PositionedValue SourcePos Value deriving (Show, D.Data, D.Typeable)

355

356-- |

357-- An alternative in a case statement

358--

359data CaseAlternative = CaseAlternative

360 { -- |

361 -- A collection of binders with which to match the inputs

362 --

363 caseAlternativeBinders :: [Binder]

364 -- |

365 -- An optional guard

366 --

367 , caseAlternativeGuard :: Maybe Guard

368 -- |

369 -- The result expression

370 --

371 , caseAlternativeResult :: Value

372 } deriving (Show, D.Data, D.Typeable)

373

374-- |

375-- Find the original dictionary which a type class dictionary in scope refers to

376--

377canonicalizeDictionary :: TypeClassDictionaryInScope -> Qualified Ident

378canonicalizeDictionary (TypeClassDictionaryInScope { tcdType = TCDRegular, tcdName = nm }) = nm

379canonicalizeDictionary (TypeClassDictionaryInScope { tcdType = TCDAlias nm }) = nm

380

381-- |

382-- A statement in a do-notation block

383--

384data DoNotationElement

385 -- |

386 -- A monadic value without a binder

387 --

388 = DoNotationValue Value

389 -- |

390 -- A monadic value with a binder

391 --

392 | DoNotationBind Binder Value

393 -- |

394 -- A let statement, i.e. a pure value with a binder

395 --

396 | DoNotationLet [Declaration]

397 -- |

398 -- A do notation element with source position information

399 --

400 | PositionedDoNotationElement SourcePos DoNotationElement deriving (Show, D.Data, D.Typeable)

401

402-- |

403-- Data type for binders

404--

405data Binder

406 -- |

407 -- Wildcard binder

408 --

409 = NullBinder

410 -- |

411 -- A binder which matches a boolean literal

412 --

413 | BooleanBinder Bool

414 -- |

415 -- A binder which matches a string literal

416 --

417 | StringBinder String

418 -- |

419 -- A binder which matches a numeric literal

420 --

421 | NumberBinder (Either Integer Double)

422 -- |

423 -- A binder which binds an identifier

424 --

425 | VarBinder Ident

426 -- |

427 -- A binder which matches a data constructor

428 --

429 | ConstructorBinder (Qualified ProperName) [Binder]

430 -- |

431 -- A binder which matches a record and binds its properties

432 --

433 | ObjectBinder [(String, Binder)]

434 -- |

435 -- A binder which matches an array and binds its elements

436 --

437 | ArrayBinder [Binder]

438 -- |

439 -- A binder which matches an array and binds its head and tail

440 --

441 | ConsBinder Binder Binder

442 -- |

443 -- A binder which binds its input to an identifier

444 --

445 | NamedBinder Ident Binder

446 -- |

447 -- A binder with source position information

448 --

449 | PositionedBinder SourcePos Binder deriving (Show, D.Data, D.Typeable)

450

451-- |

452-- Collect all names introduced in binders in an expression

453--

454binderNames :: Binder -> [Ident]

455binderNames = go []

456 where

457 go ns (VarBinder name) = name : ns

458 go ns (ConstructorBinder _ bs) = foldl go ns bs

459 go ns (ObjectBinder bs) = foldl go ns (map snd bs)

460 go ns (ArrayBinder bs) = foldl go ns bs

461 go ns (ConsBinder b1 b2) = go (go ns b1) b2

462 go ns (NamedBinder name b) = go (name : ns) b

463 go ns (PositionedBinder _ b) = go ns b

464 go ns _ = ns

465

466--

467-- Traversals

468--

469

470everywhereOnValues :: (Declaration -> Declaration) ->

471 (Value -> Value) ->

472 (Binder -> Binder) ->

473 (Declaration -> Declaration, Value -> Value, Binder -> Binder)

474everywhereOnValues f g h = (f', g', h')

475 where

476 f' :: Declaration -> Declaration

477 f' (DataBindingGroupDeclaration ds) = f (DataBindingGroupDeclaration (map f' ds))

478 f' (ValueDeclaration name nameKind bs grd val) = f (ValueDeclaration name nameKind (map h' bs) (fmap g' grd) (g' val))

479 f' (BindingGroupDeclaration ds) = f (BindingGroupDeclaration (map (\(name, nameKind, val) -> (name, nameKind, g' val)) ds))

480 f' (TypeClassDeclaration name args implies ds) = f (TypeClassDeclaration name args implies (map f' ds))

481 f' (TypeInstanceDeclaration name cs className args ds) = f (TypeInstanceDeclaration name cs className args (map f' ds))

482 f' (PositionedDeclaration pos d) = f (PositionedDeclaration pos (f' d))

483 f' other = f other

484

485 g' :: Value -> Value

486 g' (UnaryMinus v) = g (UnaryMinus (g' v))

487 g' (BinaryNoParens op v1 v2) = g (BinaryNoParens op (g' v1) (g' v2))

488 g' (Parens v) = g (Parens (g' v))

489 g' (ArrayLiteral vs) = g (ArrayLiteral (map g' vs))

490 g' (ObjectLiteral vs) = g (ObjectLiteral (map (fmap g') vs))

491 g' (TypeClassDictionaryConstructorApp name v) = g (TypeClassDictionaryConstructorApp name (g' v))

492 g' (Accessor prop v) = g (Accessor prop (g' v))

493 g' (ObjectUpdate obj vs) = g (ObjectUpdate (g' obj) (map (fmap g') vs))

494 g' (Abs name v) = g (Abs name (g' v))

495 g' (App v1 v2) = g (App (g' v1) (g' v2))

496 g' (IfThenElse v1 v2 v3) = g (IfThenElse (g' v1) (g' v2) (g' v3))

497 g' (Case vs alts) = g (Case (map g' vs) (map handleCaseAlternative alts))

498 g' (TypedValue check v ty) = g (TypedValue check (g' v) ty)

499 g' (Let ds v) = g (Let (map f' ds) (g' v))

500 g' (Do es) = g (Do (map handleDoNotationElement es))

501 g' (PositionedValue pos v) = g (PositionedValue pos (g' v))

502 g' other = g other

503

504 h' :: Binder -> Binder

505 h' (ConstructorBinder ctor bs) = h (ConstructorBinder ctor (map h' bs))

506 h' (ObjectBinder bs) = h (ObjectBinder (map (fmap h') bs))

507 h' (ArrayBinder bs) = h (ArrayBinder (map h' bs))

508 h' (ConsBinder b1 b2) = h (ConsBinder (h' b1) (h' b2))

509 h' (NamedBinder name b) = h (NamedBinder name (h' b))

510 h' (PositionedBinder pos b) = h (PositionedBinder pos (h' b))

511 h' other = h other

512

513 handleCaseAlternative :: CaseAlternative -> CaseAlternative

514 handleCaseAlternative ca =

515 ca { caseAlternativeBinders = map h' (caseAlternativeBinders ca)

516 , caseAlternativeGuard = fmap g' (caseAlternativeGuard ca)

517 , caseAlternativeResult = g' (caseAlternativeResult ca)

518 }

519

520 handleDoNotationElement :: DoNotationElement -> DoNotationElement

521 handleDoNotationElement (DoNotationValue v) = DoNotationValue (g' v)

522 handleDoNotationElement (DoNotationBind b v) = DoNotationBind (h' b) (g' v)

523 handleDoNotationElement (DoNotationLet ds) = DoNotationLet (map f' ds)

524 handleDoNotationElement (PositionedDoNotationElement pos e) = PositionedDoNotationElement pos (handleDoNotationElement e)

525

526

527everywhereOnValuesTopDownM :: (Functor m, Applicative m, Monad m) =>

528 (Declaration -> m Declaration) ->

529 (Value -> m Value) ->

530 (Binder -> m Binder) ->

531 (Declaration -> m Declaration, Value -> m Value, Binder -> m Binder)

532everywhereOnValuesTopDownM f g h = (f' <=< f, g' <=< g, h' <=< h)

533 where

534 f' (DataBindingGroupDeclaration ds) = DataBindingGroupDeclaration <$> mapM (f' <=< f) ds

535 f' (ValueDeclaration name nameKind bs grd val) = ValueDeclaration name nameKind <$> mapM (h' <=< h) bs <*> maybeM (g' <=< g) grd <*> (g val >>= g')

536 f' (BindingGroupDeclaration ds) = BindingGroupDeclaration <$> mapM (\(name, nameKind, val) -> (,,) name nameKind <$> (g val >>= g')) ds

537 f' (TypeClassDeclaration name args implies ds) = TypeClassDeclaration name args implies <$> mapM (f' <=< f) ds

538 f' (TypeInstanceDeclaration name cs className args ds) = TypeInstanceDeclaration name cs className args <$> mapM (f' <=< f) ds

539 f' (PositionedDeclaration pos d) = PositionedDeclaration pos <$> (f d >>= f')

540 f' other = f other

541

542 g' (UnaryMinus v) = UnaryMinus <$> (g v >>= g')

543 g' (BinaryNoParens op v1 v2) = BinaryNoParens op <$> (g v1 >>= g') <*> (g v2 >>= g')

544 g' (Parens v) = Parens <$> (g v >>= g')

545 g' (ArrayLiteral vs) = ArrayLiteral <$> mapM (g' <=< g) vs

546 g' (ObjectLiteral vs) = ObjectLiteral <$> mapM (sndM (g' <=< g)) vs

547 g' (TypeClassDictionaryConstructorApp name v) = TypeClassDictionaryConstructorApp name <$> (g v >>= g')

548 g' (Accessor prop v) = Accessor prop <$> (g v >>= g')

549 g' (ObjectUpdate obj vs) = ObjectUpdate <$> (g obj >>= g') <*> mapM (sndM (g' <=< g)) vs

550 g' (Abs name v) = Abs name <$> (g v >>= g')

551 g' (App v1 v2) = App <$> (g v1 >>= g') <*> (g v2 >>= g')

552 g' (IfThenElse v1 v2 v3) = IfThenElse <$> (g v1 >>= g') <*> (g v2 >>= g') <*> (g v3 >>= g')

553 g' (Case vs alts) = Case <$> mapM (g' <=< g) vs <*> mapM handleCaseAlternative alts

554 g' (TypedValue check v ty) = TypedValue check <$> (g v >>= g') <*> pure ty

555 g' (Let ds v) = Let <$> mapM (f' <=< f) ds <*> (g v >>= g')

556 g' (Do es) = Do <$> mapM handleDoNotationElement es

557 g' (PositionedValue pos v) = PositionedValue pos <$> (g v >>= g')

558 g' other = g other

559

560 h' (ConstructorBinder ctor bs) = ConstructorBinder ctor <$> mapM (h' <=< h) bs

561 h' (ObjectBinder bs) = ObjectBinder <$> mapM (sndM (h' <=< h)) bs

562 h' (ArrayBinder bs) = ArrayBinder <$> mapM (h' <=< h) bs

563 h' (ConsBinder b1 b2) = ConsBinder <$> (h b1 >>= h') <*> (h b2 >>= h')

564 h' (NamedBinder name b) = NamedBinder name <$> (h b >>= h')

565 h' (PositionedBinder pos b) = PositionedBinder pos <$> (h b >>= h')

566 h' other = h other

567

568 handleCaseAlternative (CaseAlternative bs grd val) = CaseAlternative <$> mapM (h' <=< h) bs

569 <*> maybeM (g' <=< g) grd

570 <*> (g' <=< g) val

571

572 handleDoNotationElement (DoNotationValue v) = DoNotationValue <$> (g' <=< g) v

573 handleDoNotationElement (DoNotationBind b v) = DoNotationBind <$> (h' <=< h) b <*> (g' <=< g) v

574 handleDoNotationElement (DoNotationLet ds) = DoNotationLet <$> mapM (f' <=< f) ds

575 handleDoNotationElement (PositionedDoNotationElement pos e) = PositionedDoNotationElement pos <$> handleDoNotationElement e

576

577everywhereOnValuesM :: (Functor m, Applicative m, Monad m) =>

578 (Declaration -> m Declaration) ->

579 (Value -> m Value) ->

580 (Binder -> m Binder) ->

581 (Declaration -> m Declaration, Value -> m Value, Binder -> m Binder)

582everywhereOnValuesM f g h = (f' <=< f, g' <=< g, h' <=< h)

583 where

584 f' (DataBindingGroupDeclaration ds) = (DataBindingGroupDeclaration <$> mapM f' ds) >>= f

585 f' (ValueDeclaration name nameKind bs grd val) = (ValueDeclaration name nameKind <$> mapM h' bs <*> maybeM g' grd <*> g' val) >>= f

586 f' (BindingGroupDeclaration ds) = (BindingGroupDeclaration <$> mapM (\(name, nameKind, val) -> (,,) name nameKind <$> g' val) ds) >>= f

587 f' (TypeClassDeclaration name args implies ds) = (TypeClassDeclaration name args implies <$> mapM f' ds) >>= f

588 f' (TypeInstanceDeclaration name cs className args ds) = (TypeInstanceDeclaration name cs className args <$> mapM f' ds) >>= f

589 f' (PositionedDeclaration pos d) = (PositionedDeclaration pos <$> f' d) >>= f

590 f' other = f other

591

592 g' (UnaryMinus v) = (UnaryMinus <$> g' v) >>= g

593 g' (BinaryNoParens op v1 v2) = (BinaryNoParens op <$> (g' v1) <*> (g' v2)) >>= g

594 g' (Parens v) = (Parens <$> g' v) >>= g

595 g' (ArrayLiteral vs) = (ArrayLiteral <$> mapM g' vs) >>= g

596 g' (ObjectLiteral vs) = (ObjectLiteral <$> mapM (sndM g') vs) >>= g

597 g' (TypeClassDictionaryConstructorApp name v) = (TypeClassDictionaryConstructorApp name <$> g' v) >>= g

598 g' (Accessor prop v) = (Accessor prop <$> g' v) >>= g

599 g' (ObjectUpdate obj vs) = (ObjectUpdate <$> g' obj <*> mapM (sndM g') vs) >>= g

600 g' (Abs name v) = (Abs name <$> g' v) >>= g

601 g' (App v1 v2) = (App <$> g' v1 <*> g' v2) >>= g

602 g' (IfThenElse v1 v2 v3) = (IfThenElse <$> g' v1 <*> g' v2 <*> g' v3) >>= g

603 g' (Case vs alts) = (Case <$> mapM g' vs <*> mapM handleCaseAlternative alts) >>= g

604 g' (TypedValue check v ty) = (TypedValue check <$> g' v <*> pure ty) >>= g

605 g' (Let ds v) = (Let <$> mapM f' ds <*> g' v) >>= g

606 g' (Do es) = (Do <$> mapM handleDoNotationElement es) >>= g

607 g' (PositionedValue pos v) = (PositionedValue pos <$> g' v) >>= g

608 g' other = g other

609

610 h' (ConstructorBinder ctor bs) = (ConstructorBinder ctor <$> mapM h' bs) >>= h

611 h' (ObjectBinder bs) = (ObjectBinder <$> mapM (sndM h') bs) >>= h

612 h' (ArrayBinder bs) = (ArrayBinder <$> mapM h' bs) >>= h

613 h' (ConsBinder b1 b2) = (ConsBinder <$> h' b1 <*> h' b2) >>= h

614 h' (NamedBinder name b) = (NamedBinder name <$> h' b) >>= h

615 h' (PositionedBinder pos b) = (PositionedBinder pos <$> h' b) >>= h

616 h' other = h other

617

618 handleCaseAlternative (CaseAlternative bs grd val) = CaseAlternative <$> mapM h' bs

619 <*> maybeM g' grd

620 <*> g' val

621

622 handleDoNotationElement (DoNotationValue v) = DoNotationValue <$> g' v

623 handleDoNotationElement (DoNotationBind b v) = DoNotationBind <$> h' b <*> g' v

624 handleDoNotationElement (DoNotationLet ds) = DoNotationLet <$> mapM f' ds

625 handleDoNotationElement (PositionedDoNotationElement pos e) = PositionedDoNotationElement pos <$> handleDoNotationElement e

626

627everythingOnValues :: (r -> r -> r) ->

628 (Declaration -> r) ->

629 (Value -> r) ->

630 (Binder -> r) ->

631 (CaseAlternative -> r) ->

632 (DoNotationElement -> r) ->

633 (Declaration -> r, Value -> r, Binder -> r, CaseAlternative -> r, DoNotationElement -> r)

634everythingOnValues (<>) f g h i j = (f', g', h', i', j')

635 where

636 f' d@(DataBindingGroupDeclaration ds) = foldl (<>) (f d) (map f' ds)

637 f' d@(ValueDeclaration _ _ bs Nothing val) = foldl (<>) (f d) (map h' bs) <> g' val

638 f' d@(ValueDeclaration _ _ bs (Just grd) val) = foldl (<>) (f d) (map h' bs) <> g' grd <> g' val

639 f' d@(BindingGroupDeclaration ds) = foldl (<>) (f d) (map (\(_, _, val) -> g' val) ds)

640 f' d@(TypeClassDeclaration _ _ _ ds) = foldl (<>) (f d) (map f' ds)

641 f' d@(TypeInstanceDeclaration _ _ _ _ ds) = foldl (<>) (f d) (map f' ds)

642 f' d@(PositionedDeclaration _ d1) = f d <> f' d1

643 f' d = f d

644

645 g' v@(UnaryMinus v1) = g v <> g' v1

646 g' v@(BinaryNoParens _ v1 v2) = g v <> g' v1 <> g' v2

647 g' v@(Parens v1) = g v <> g' v1

648 g' v@(ArrayLiteral vs) = foldl (<>) (g v) (map g' vs)

649 g' v@(ObjectLiteral vs) = foldl (<>) (g v) (map (g' . snd) vs)

650 g' v@(TypeClassDictionaryConstructorApp _ v1) = g v <> g' v1

651 g' v@(Accessor _ v1) = g v <> g' v1

652 g' v@(ObjectUpdate obj vs) = foldl (<>) (g v <> g' obj) (map (g' . snd) vs)

653 g' v@(Abs _ v1) = g v <> g' v1

654 g' v@(App v1 v2) = g v <> g' v1 <> g' v2

655 g' v@(IfThenElse v1 v2 v3) = g v <> g' v1 <> g' v2 <> g' v3

656 g' v@(Case vs alts) = foldl (<>) (foldl (<>) (g v) (map g' vs)) (map i' alts)

657 g' v@(TypedValue _ v1 _) = g v <> g' v1

658 g' v@(Let ds v1) = (foldl (<>) (g v) (map f' ds)) <> g' v1

659 g' v@(Do es) = foldl (<>) (g v) (map j' es)

660 g' v@(PositionedValue _ v1) = g v <> g' v1

661 g' v = g v

662

663 h' b@(ConstructorBinder _ bs) = foldl (<>) (h b) (map h' bs)

664 h' b@(ObjectBinder bs) = foldl (<>) (h b) (map (h' . snd) bs)

665 h' b@(ArrayBinder bs) = foldl (<>) (h b) (map h' bs)

666 h' b@(ConsBinder b1 b2) = h b <> h' b1 <> h' b2

667 h' b@(NamedBinder _ b1) = h b <> h' b1

668 h' b@(PositionedBinder _ b1) = h b <> h' b1

669 h' b = h b

670

671 i' ca = case caseAlternativeGuard ca of

672 Nothing -> foldl (<>) (i ca) (map h' (caseAlternativeBinders ca)) <> g' (caseAlternativeResult ca)

673 Just grd -> foldl (<>) (i ca) (map h' (caseAlternativeBinders ca)) <> g' grd <> g' (caseAlternativeResult ca)

674

675 j' e@(DoNotationValue v) = j e <> g' v

676 j' e@(DoNotationBind b v) = j e <> h' b <> g' v

677 j' e@(DoNotationLet ds) = foldl (<>) (j e) (map f' ds)

678 j' e@(PositionedDoNotationElement _ e1) = j e <> j' e1

679

680everythingWithContextOnValues ::

681 s ->

682 r ->

683 (r -> r -> r) ->

684 (s -> Declaration -> (s, r)) ->

685 (s -> Value -> (s, r)) ->

686 (s -> Binder -> (s, r)) ->

687 (s -> CaseAlternative -> (s, r)) ->

688 (s -> DoNotationElement -> (s, r)) ->

689 ( Declaration -> r

690 , Value -> r

691 , Binder -> r

692 , CaseAlternative -> r

693 , DoNotationElement -> r)

694everythingWithContextOnValues s0 r0 (<>) f g h i j = (f'' s0, g'' s0, h'' s0, i'' s0, j'' s0)

695 where

696 f'' s d = let (s', r) = f s d in r <> f' s' d

697

698 f' s (DataBindingGroupDeclaration ds) = foldl (<>) r0 (map (f'' s) ds)

699 f' s (ValueDeclaration _ _ bs Nothing val) = foldl (<>) r0 (map (h'' s) bs) <> (g'' s) val

700 f' s (ValueDeclaration _ _ bs (Just grd) val) = foldl (<>) r0 (map (h'' s) bs) <> (g'' s) grd <> (g'' s) val

701 f' s (BindingGroupDeclaration ds) = foldl (<>) r0 (map (\(_, _, val) -> (g'' s) val) ds)

702 f' s (TypeClassDeclaration _ _ _ ds) = foldl (<>) r0 (map (f'' s) ds)

703 f' s (TypeInstanceDeclaration _ _ _ _ ds) = foldl (<>) r0 (map (f'' s) ds)

704 f' s (PositionedDeclaration _ d1) = (f'' s) d1

705 f' _ _ = r0

706

707 g'' s v = let (s', r) = g s v in r <> g' s' v

708

709 g' s (UnaryMinus v1) = (g'' s) v1

710 g' s (BinaryNoParens _ v1 v2) = (g'' s) v1 <> (g'' s) v2

711 g' s (Parens v1) = (g'' s) v1

712 g' s (ArrayLiteral vs) = foldl (<>) r0 (map (g'' s) vs)

713 g' s (ObjectLiteral vs) = foldl (<>) r0 (map (g'' s . snd) vs)

714 g' s (TypeClassDictionaryConstructorApp _ v1) = (g'' s) v1

715 g' s (Accessor _ v1) = (g'' s) v1

716 g' s (ObjectUpdate obj vs) = foldl (<>) ((g'' s) obj) (map (g'' s . snd) vs)

717 g' s (Abs _ v1) = (g'' s) v1

718 g' s (App v1 v2) = (g'' s) v1 <> (g'' s) v2

719 g' s (IfThenElse v1 v2 v3) = (g'' s) v1 <> (g'' s) v2 <> (g'' s) v3

720 g' s (Case vs alts) = foldl (<>) (foldl (<>) r0 (map (g'' s) vs)) (map (i'' s) alts)

721 g' s (TypedValue _ v1 _) = (g'' s) v1

722 g' s (Let ds v1) = (foldl (<>) r0 (map (f'' s) ds)) <> (g'' s) v1

723 g' s (Do es) = foldl (<>) r0 (map (j'' s) es)

724 g' s (PositionedValue _ v1) = (g'' s) v1

725 g' _ _ = r0

726

727 h'' s b = let (s', r) = h s b in r <> h' s' b

728

729 h' s (ConstructorBinder _ bs) = foldl (<>) r0 (map (h'' s) bs)

730 h' s (ObjectBinder bs) = foldl (<>) r0 (map (h'' s . snd) bs)

731 h' s (ArrayBinder bs) = foldl (<>) r0 (map (h'' s) bs)

732 h' s (ConsBinder b1 b2) = (h'' s) b1 <> (h'' s) b2

733 h' s (NamedBinder _ b1) = (h'' s) b1

734 h' s (PositionedBinder _ b1) = (h'' s) b1

735 h' _ _ = r0

736

737 i'' s ca = let (s', r) = i s ca in r <> i' s' ca

738

739 i' s (CaseAlternative bs Nothing val) = foldl (<>) r0 (map (h'' s) bs) <> (g'' s) val

740 i' s (CaseAlternative bs (Just grd) val) = foldl (<>) r0 (map (h'' s) bs) <> (g'' s) grd <> (g'' s) val

741

742 j'' s e = let (s', r) = j s e in r <> j' s' e

743

744 j' s (DoNotationValue v) = (g'' s) v

745 j' s (DoNotationBind b v) = (h'' s) b <> (g'' s) v

746 j' s (DoNotationLet ds) = foldl (<>) r0 (map (f'' s) ds)

747 j' s (PositionedDoNotationElement _ e1) = (j'' s) e1

748

749everywhereWithContextOnValuesM :: (Functor m, Applicative m, Monad m) =>

750 s ->

751 (s -> Declaration -> m (s, Declaration)) ->

752 (s -> Value -> m (s, Value)) ->

753 (s -> Binder -> m (s, Binder)) ->

754 (s -> CaseAlternative -> m (s, CaseAlternative)) ->

755 (s -> DoNotationElement -> m (s, DoNotationElement)) ->

756 ( Declaration -> m Declaration

757 , Value -> m Value

758 , Binder -> m Binder

759 , CaseAlternative -> m CaseAlternative

760 , DoNotationElement -> m DoNotationElement)

761everywhereWithContextOnValuesM s0 f g h i j = (f'' s0, g'' s0, h'' s0, i'' s0, j'' s0)

762 where

763 f'' s = uncurry f' <=< f s

764

765 f' s (DataBindingGroupDeclaration ds) = DataBindingGroupDeclaration <$> mapM (f'' s) ds

766 f' s (ValueDeclaration name nameKind bs grd val) = ValueDeclaration name nameKind <$> mapM (h'' s) bs <*> maybeM (g'' s) grd <*> g'' s val

767 f' s (BindingGroupDeclaration ds) = BindingGroupDeclaration <$> mapM (thirdM (g'' s)) ds

768 f' s (TypeClassDeclaration name args implies ds) = TypeClassDeclaration name args implies <$> mapM (f'' s) ds

769 f' s (TypeInstanceDeclaration name cs className args ds) = TypeInstanceDeclaration name cs className args <$> mapM (f'' s) ds

770 f' s (PositionedDeclaration pos d1) = PositionedDeclaration pos <$> f'' s d1

771 f' _ other = return other

772

773 g'' s = uncurry g' <=< g s

774

775 g' s (UnaryMinus v) = UnaryMinus <$> g'' s v

776 g' s (BinaryNoParens op v1 v2) = BinaryNoParens op <$> g'' s v1 <*> g'' s v2

777 g' s (Parens v) = Parens <$> g'' s v

778 g' s (ArrayLiteral vs) = ArrayLiteral <$> mapM (g'' s) vs

779 g' s (ObjectLiteral vs) = ObjectLiteral <$> mapM (sndM (g'' s)) vs

780 g' s (TypeClassDictionaryConstructorApp name v) = TypeClassDictionaryConstructorApp name <$> (g'' s) v

781 g' s (Accessor prop v) = Accessor prop <$> g'' s v

782 g' s (ObjectUpdate obj vs) = ObjectUpdate <$> g'' s obj <*> mapM (sndM (g'' s)) vs

783 g' s (Abs name v) = Abs name <$> g'' s v

784 g' s (App v1 v2) = App <$> g'' s v1 <*> g'' s v2

785 g' s (IfThenElse v1 v2 v3) = IfThenElse <$> g'' s v1 <*> g'' s v2 <*> g'' s v3

786 g' s (Case vs alts) = Case <$> mapM (g'' s) vs <*> mapM (i'' s) alts

787 g' s (TypedValue check v ty) = TypedValue check <$> g'' s v <*> pure ty

788 g' s (Let ds v) = Let <$> mapM (f'' s) ds <*> g'' s v

789 g' s (Do es) = Do <$> mapM (j'' s) es

790 g' s (PositionedValue pos v) = PositionedValue pos <$> g'' s v

791 g' _ other = return other

792

793 h'' s = uncurry h' <=< h s

794

795 h' s (ConstructorBinder ctor bs) = ConstructorBinder ctor <$> mapM (h'' s) bs

796 h' s (ObjectBinder bs) = ObjectBinder <$> mapM (sndM (h'' s)) bs

797 h' s (ArrayBinder bs) = ArrayBinder <$> mapM (h'' s) bs

798 h' s (ConsBinder b1 b2) = ConsBinder <$> h'' s b1 <*> h'' s b2

799 h' s (NamedBinder name b) = NamedBinder name <$> h'' s b

800 h' s (PositionedBinder pos b) = PositionedBinder pos <$> h'' s b

801 h' _ other = return other

802

803 i'' s = uncurry i' <=< i s

804

805 i' s (CaseAlternative bs grd val) = CaseAlternative <$> mapM (h'' s) bs <*> maybeM (g'' s) grd <*> g'' s val

806

807 j'' s = uncurry j' <=< j s

808

809 j' s (DoNotationValue v) = DoNotationValue <$> g'' s v

810 j' s (DoNotationBind b v) = DoNotationBind <$> h'' s b <*> g'' s v

811 j' s (DoNotationLet ds) = DoNotationLet <$> mapM (f'' s) ds

812 j' s (PositionedDoNotationElement pos e1) = PositionedDoNotationElement pos <$> j'' s e1

813

814accumTypes :: (Monoid r) => (Type -> r) -> (Declaration -> r, Value -> r, Binder -> r, CaseAlternative -> r, DoNotationElement -> r)

815accumTypes f = everythingOnValues mappend forDecls forValues (const mempty) (const mempty) (const mempty)

816 where

817 forDecls (DataDeclaration _ _ _ dctors) = mconcat (concatMap (map f . snd) dctors)

818 forDecls (ExternDeclaration _ _ _ ty) = f ty

819 forDecls (ExternInstanceDeclaration _ cs _ tys) = mconcat (concatMap (map f . snd) cs) `mappend` mconcat (map f tys)

820 forDecls (TypeClassDeclaration _ _ implies _) = mconcat (concatMap (map f . snd) implies)

821 forDecls (TypeInstanceDeclaration _ cs _ tys _) = mconcat (concatMap (map f . snd) cs) `mappend` mconcat (map f tys)

822 forDecls (TypeSynonymDeclaration _ _ ty) = f ty

823 forDecls (TypeDeclaration _ ty) = f ty

824 forDecls _ = mempty

825

826 forValues (TypeClassDictionary _ (_, cs) _) = mconcat (map f cs)

827 forValues (SuperClassDictionary _ tys) = mconcat (map f tys)

828 forValues (TypedValue _ _ ty) = f ty

829 forValues _ = mempty

830

831