@@ -1,407 +1,450 @@
1−{-# LANGUAGE FlexibleInstances #-}
2−{-# LANGUAGE LambdaCase #-}
31{-# LANGUAGE OverloadedStrings #-}
42
53module Main
6− ( main
7− ) where
8−
9−import Control.Monad.RWS.CPS (RWS, execRWS)
10−import Control.Monad.Reader
11−import Control.Monad.State.Strict
12−import Control.Monad.Writer.CPS (Writer, tell, execWriter)
13−import Data.ByteString.Lazy as BL
14−import Data.Char as C
15−import Data.Default
16−import Data.Foldable as F
17−import Data.List as L
18−import Data.Map.Strict as M
19−import Data.Set as S
20−import Data.Text as T
21−import Data.Text.IO as T
22−import Data.Traversable
23−import Debug.Trace
24−import System.Environment
25−import System.IO
26−import Text.XSD
27−
28−
29−data GenType = Parser | Generator | Both
30− deriving (Read, Show)
31−
32−genTypeToText :: GenType -> Text
33−genTypeToText Parser = "Parser"
34−genTypeToText Generator = "Generator"
35−genTypeToText Both = "Both"
36−
37−type GenMonad = ReaderT DatatypeMap (Writer Text)
38−
39−class References a where
40− references :: a -> [Text]
41−
42−instance References Datatype where
43− references (TypeComplex (ComplexType _ _ _ mmgs)) =
44− case mmgs of
45− Just mgs -> case mgs of
46− CTSequence els -> F.concatMap references els
47− CTChoice els -> F.concatMap references els
48− CTAll els -> F.concatMap references els
49− Nothing -> []
50− references (TypeSimple _) = []
51−
52−instance References Element where
53− references (Element _ t _ _ _) = references t
54−
55−instance References DatatypeRef where
56− references (DatatypeRef ty) = [ty]
57− references (InlineComplex dt) = references dt
58−
59−instance References a => References [a] where
60− references = F.concatMap references
61−
62−-- | 'DatatypeMap' are the types left to process
63−-- 'S.Set Text' are the types already processed.
64−type PreMonad = StateT (DatatypeMap, S.Set Text) (Writer [(Text, Datatype)])
65−
66−type PreElemMonad = RWS DatatypeMap [Element] [Element]
67−
68−-- | Marks the given type as processed.
69−proceed :: Text -> Datatype -> PreMonad ()
70−proceed t dt = do
71− tell [(t, dt)]
72− modify $ \(f,s) -> (M.delete t f, S.insert t s)
73−
74−-- | Marks element as processed.
75−proceed' :: Element -> PreElemMonad ()
76−proceed' el = do
77− tell [el]
78− modify $ L.delete el
79−
80−untwistDeps :: [Element] -> DatatypeMap -> ([(Text, Datatype)], [Element])
81−untwistDeps e dm = (dList, e')
82− where
83− dList = nub $ execWriter $ do
84− (a, _) <- runStateT sortDatatypesByDeps (dm, S.empty)
85− return a
86− (_, e') = execRWS sortElemsByDeps (M.fromList dList) e
87−
88−sortElemsByDeps :: PreElemMonad ()
89−sortElemsByDeps = do
90− els <- get
91− if Prelude.null els then pure () else do
92− let first = Prelude.head els
93− -- traceM $ "sortElemsByDeps: " <> show first
94− case references first of
95− [] -> proceed' first >> sortElemsByDeps
96− xs -> do
97− results <- traverse memberDatatype xs
98− if L.and results
99− then proceed' first >> sortElemsByDeps
100− else do
101− let failed = fmap snd $ L.filter (not . fst) $ L.zip results xs
102− error $ "impossible to lookup types: " <> show failed
103−
104−memberDatatype :: Text -> PreElemMonad Bool
105−memberDatatype ty = do
106− -- traceM $ "memberDatatype: " <> show ty
107− dm <- ask
108− case M.lookup ty dm of
109− Just _ -> return True
110− Nothing -> return False
111−
112−sortDatatypesByDeps :: PreMonad ()
113−sortDatatypesByDeps = do
114− (dm, _) <- get
115− if M.null dm then pure () else do
116− let first = Prelude.head (M.toList dm)
117− traceM $ "sortDatatypesByDeps: " <> show first
118− case references $ snd first of
119− [] -> uncurry proceed first >> sortDatatypesByDeps
120− xs -> do
121− traverse_ lookupDatatype xs
122− uncurry proceed first
123− sortDatatypesByDeps
124−
125−lookupDatatype :: Text -> PreMonad ()
126−lookupDatatype ty = do
127− traceM $ "lookupDatatype: " <> show ty
128− (dm, s) <- get
129− case M.lookup ty dm of
130− Nothing -> if S.member ty s then pure () else
131− error $ "can't look up datatype: " <> show ty
132− Just typ -> case references typ of
133− [] -> proceed ty typ
134− xs -> traverse_ lookupDatatype xs >> proceed ty typ
135−
136−class Capitalizable t where
137− capitalize :: t -> t
138−
139−instance Capitalizable String where
140− capitalize [] = []
141− capitalize (a:as) = C.toUpper a : as
142−
143−instance Capitalizable Text where
144− capitalize t
145− | T.null t = t
146− | otherwise = T.singleton (C.toUpper (T.head t)) <> T.tail t
147−
148−data DataFlavour = QQ | Plain
149−
150−-- TODO: improve after moving some XML types to xml-isogen
151−simpleTypeToIsoType :: DataFlavour -> SimpleAtomicType -> Text
152−simpleTypeToIsoType fl = \case
153− STAnyURI -> wrap fl "Text"
154− STBase64Binary -> wrap fl "ByteString"
155− STBoolean -> wrap fl "Bool"
156− STDate -> wrap fl "Date \"%YYYYj\""
157− STDateTime -> wrap fl "Text"
158− STDateTimeStamp -> wrap fl "Text"
159− STDecimal DTDecimal -> wrap fl "Double"
160− (STDecimal _) -> wrap fl "Integer"
161− STDouble -> wrap fl "Double"
162− (STDuration _) -> wrap fl "Integer"
163− STFloat -> wrap fl "Float"
164− STGDay -> wrap fl "Day"
165− STGMonth -> wrap fl "Text"
166− STGMonthDay -> wrap fl "Text"
167− STGYear -> wrap fl "Text"
168− STGYearMonth -> wrap fl "Text"
169− STHexBinary -> wrap fl "Text"
170− STNOTATION -> wrap fl "Text"
171− STQName -> wrap fl "Text"
172− (STString _) -> wrap fl "Text"
173− STTime -> wrap fl "Text"
174− where
175− wrap QQ t = "[t|" <> t <> "|]"
176− wrap Plain t = t
177−
178−tellGen
179− :: [Text] -- generated code
180− -> Text -- comment
181− -> GenMonad ()
182−tellGen code comment =
183− tell $ "\n" <> comment <> T.unlines code
4+( main
5+)
6+where
7+
8+import Data.Text (Text)
9+import qualified Data.Text as Text
10+import qualified Data.Text.IO as Text
11+import Data.Maybe
12+import qualified Data.List as List
13+import qualified Data.Set as Set
14+import Data.Map (Map)
15+import qualified Data.Map as Map
16+import Control.Monad
17+import qualified System.IO as IO
18+import qualified Xsd
19+
20+import Options
21+import Gen
22+import References
23+import BuiltInTypes
18424
185−runGen :: DatatypeMap -> GenMonad a -> Text
186−runGen dm act = execWriter $ runReaderT act dm
187−
188−generateIsoXml :: GenType -> XSD -> Text
189−generateIsoXml genType (XSD (e,dm)) =
25+main :: IO ()
26+main = do
27+ opts <- getOptions
28+ schema <- Xsd.getSchema (oInput opts)
29+ res <- either fail return
30+ (generate opts schema)
31+ mapM_ (Text.hPutStrLn IO.stderr) (resultWarnings res)
32+ Text.putStrLn (resultCode res)
33+
34+data Result = Result
35+ { resultCode :: Text
36+ , resultWarnings :: [Text]
37+ }
38+
39+generate :: Options -> Xsd.Schema -> Either String Result
40+generate opts schema = do
19041 let
191− (dList, el) = untwistDeps e dm
192− in (header genType <>) . runGen dm $ do
193− for_ dList $ \(t,dt) ->
194− generateIsoDatatype genType t dt []
195− for_ el (generateIsoRecord genType)
196−
197−toQualifier :: Int -> Int -> Text
198−toQualifier minOc maxOc
199− | minOc == 1 && maxOc == 1 = "!"
200− | minOc == 0 && maxOc == 1 = "?"
201− | minOc == 1 && maxOc > minOc = "+"
202− | minOc == 1 && maxOc < minOc = error "maxOccurs < minOccurs"
203− | otherwise = "*"
204−
205−header :: GenType -> Text
206−header genType = T.unlines $
207− [ "module Dummy where"
208− , ""
209− , "import Control.DeepSeq"
210− , "import Data.THGen.XML"
211− ] <> specImports <>
212− [ "import Prelude hiding ((*), (+))"
213− , "" ]
214− where
215− specImports = case genType of
216− Generator -> [ xmlWriter ]
217− Parser -> [ domParser ]
218− Both -> [ domParser, xmlWriter ]
219− xmlWriter, domParser :: Text
220− xmlWriter = "import Text.XML.Writer"
221− domParser = "import Text.XML.DOM.Parser.FromDom"
222−
223−quote :: Text -> Text
224−quote t = "\"" <> t <> "\""
225−
226−-- | Nothing means unknown name
227−typeName :: DatatypeRef -> Maybe Text
228−typeName (InlineComplex dt) = result
229− where
230− result = case dt of
231− TypeComplex (ComplexType n _ _ _) -> n
232− TypeSimple (STAtomic _ sat _ _) -> Just $ simpleTypeToIsoType QQ sat
233−typeName (DatatypeRef t) = Just t
234−
235−generateIsoRecord :: GenType -> Element -> GenMonad ()
236−generateIsoRecord
237− genType
238− (Element (_, laxName) elXtype _ _ elAnnotations) = do
239− written <- ask
240− case elXtype of
241− InlineComplex dt ->
242− generateIsoDatatype genType laxName dt elAnnotations
243− DatatypeRef nam -> if M.member nam written
244− then pure ()
245− else error $ "Implementation failure: "
246− <> show nam <> " type never encountered before"
247−
248−data CommentType = Haddock | Regular
249−
250−toComment :: CommentType -> [Annotation] -> Text
251−toComment ct ann = case texts of
252− [] -> ""
253− (h:tl) -> T.unlines ((prefix <> h) : fmap ("-- "<>) tl)
254− where
255− texts = stripTexts $ F.concatMap (wrap80 . fromDocumentation) ann
256− stripTexts = \case
257− [] -> []
258− l@(h:tl) -> if T.all (\x -> x == ' ' || x == '\n') h then stripTexts tl else l
259− prefix = case ct of
260− Haddock -> "-- | "
261− Regular -> "-- "
262−
263−fromDocumentation :: Annotation -> Text
264−fromDocumentation (Documentation t) = t
265−
266−wrap80 :: Text -> [Text]
267−wrap80 = L.foldl' go [] . T.split (==' ')
42+ types = Map.union (Xsd.schemaTypes schema)
43+ (elementsToTypes (Xsd.schemaElements schema))
44+ s <- runGen (initialGenState opts types) $ do
45+ genHeader opts
46+ genTypes types
47+ Right Result
48+ { resultCode = Text.unlines (reverse (gsCode s))
49+ , resultWarnings = reverse (gsWarnings s)
50+ }
51+
52+elementsToTypes :: Map Xsd.QName Xsd.Element -> Map Xsd.QName Xsd.Type
53+elementsToTypes = List.foldl' step Map.empty . Map.toList
26854 where
269− go [] e = [e]
270− go l e =
271− let last' = L.last l
272− in if T.length last' + T.length e >= 73 -- 80 minus "-- | " and ' '
273− then l <> pure e
274− else L.init l <> [L.last l <> " " <> e]
275−
276−generateIsoDatatype
277− :: GenType
278− -> (Maybe Text) -- ^ Explicitly provided name, used for inline complexType's
279− -> Datatype
280− -> [Annotation]
281− -> GenMonad ()
282− -- ^ (type name for lookups, generated code)
283−generateIsoDatatype
284− genType
285− eName
286− (TypeComplex (ComplexType iName attrs annotations mGroupSchema))
287− annotationsRec = do
288− name <- case eName of
289− Just name -> pure name
290− Nothing -> case iName of
291− Just name' -> pure name'
292− Nothing -> error $ "[generateIsoDatatype] no name was provided"
293− case mGroupSchema of
294− Just groupSchema -> case groupSchema of
295− CTSequence elems -> do
296− fields <- for elems (generateIsoField genType)
55+ step types (_, e) = case Xsd.elementType e of
56+ Xsd.Ref _ -> types
57+ Xsd.Inline t -> Map.insert (Xsd.elementName e) t types
58+
59+genTypes :: Map Xsd.QName Xsd.Type -> Gen ()
60+genTypes types = mapM_ (uncurry genTopType) . Map.toList $ types
61+
62+genTopType :: Xsd.QName -> Xsd.Type -> Gen ()
63+genTopType = genType []
64+
65+genType :: [Xsd.Annotation] -> Xsd.QName -> Xsd.Type -> Gen ()
66+genType annotations name tp = do
67+ known <- knownTypeName name
68+ case known of
69+ Just _ -> return () -- already generated
70+ Nothing -> do
71+ -- we should generate dependencies before the type itself to make
72+ -- sure they are in scope when xml-isogen quotes them
73+ -- (stage restriction in TH)
74+ genDependencies tp
75+ typeName <- makeTypeName name tp
76+ case tp of
77+ Xsd.TypeSimple t -> genSimpleType typeName t annotations
78+ Xsd.TypeComplex t -> genComplexType typeName t annotations
79+ genExtension name
80+
81+genExtension :: Xsd.QName -> Gen ()
82+genExtension base = do
83+ exts <- extensions base
84+ case exts of
85+ [] -> return ()
86+ types -> do
87+ mapM_ (uncurry genTopType) types
88+ baseTypeName <- tnPrefixed <$> resolveTypeName base
89+ writeCode
90+ [ "data Any" <> baseTypeName
91+ , " = The" <> baseTypeName <> " !" <> baseTypeName
92+ ]
93+ let
94+ mkConstructor (n, _) = do
95+ tn <- tnPrefixed <$> resolveTypeName n
96+ exts' <- extensions n
29797 let
298− comment = toComment Haddock $ annotationsRec
299− <> [Documentation ""]
300− <> annotations
301− header =
302− (quote $ capitalize name)
303− <> " =:= record "
304− <> genTypeToText genType
305− tellGen (header : fields) comment
306−generateIsoDatatype
307− genType
308− eName
309− (TypeSimple (STAtomic iName sat annotations restrictions))
310− annotationsRec = do
311− name <- case eName of
312− Just name -> pure name
313− Nothing -> pure iName
314− let
315− comment =
316− toComment Haddock $ annotationsRec
317− <> [Documentation ""]
318− <> annotations
319− isEnumeration (Enumeration _) = True
320− fromEnumeration (Enumeration x) = x
321− enums = Prelude.filter isEnumeration restrictions
322− typeStr = simpleTypeToIsoType QQ sat
323− if Prelude.length enums > 0
324− then tellGen
325− (generateEnum
326− (quote $ capitalize name)
327− (F.concatMap fromEnumeration enums))
328− comment
329− else
330− tellGen (generateNewtype genType iName sat) comment
331−
332−generateNewtype :: GenType -> Text -> SimpleAtomicType -> [Text]
333−generateNewtype genType n sat =
98+ n' = case exts' of
99+ [] -> tn
100+ _ -> "Any" <> tn
101+ return (" | The" <> n' <> " !" <> n')
102+ constructors <- mapM mkConstructor types
103+ writeCode constructors
104+ writeCode
105+ [ " deriving (Eq, Show)"
106+ , ""
107+ ]
108+ writeCode
109+ [ "instance NFData Any" <> baseTypeName <> " where"
110+ , " rnf = rwhnf"
111+ , " "
112+ ]
113+ mode <- getMode
114+ unless (mode == Generator) $ do
115+ writeCode
116+ [ "instance FromDom Any" <> baseTypeName <> " where"
117+ , " fromDom = do"
118+ , " tp <- parseAttribute"
119+ , " (matchName " <>
120+ "\"{http://www.w3.org/2001/XMLSchema-instance}type\")"
121+ , " Right"
122+ , " case tp of"
123+ ]
124+ let
125+ mkClause n = do
126+ tn <- resolveTypeName n
127+ exts' <- extensions n
128+ n' <- case exts' of
129+ [] -> return (tnPrefixed tn)
130+ _ | n == base -> return (tnPrefixed tn)
131+ _ -> return ("Any" <> tnPrefixed tn)
132+ return $ mconcat
133+ [ " \""
134+ , tnName tn
135+ , "\" -> The"
136+ , n'
137+ , " <$> fromDom"
138+ ]
139+ clauses <- mapM mkClause (base : map fst types)
140+ writeCode clauses
141+ writeCode
142+ [ " _ -> throwParserError (PEOther \"Unexpected type\")"
143+ , ""
144+ ]
145+ unless (mode == Parser) $ do
146+ writeCode
147+ [ "instance ToXML Any" <> baseTypeName <> " where"
148+ , " toXML (The" <> baseTypeName <> " a) = toXML a"
149+ ]
150+ let
151+ mkClause (n, _) = do
152+ tn <- tnPrefixed <$> resolveTypeName n
153+ exts' <- extensions n
154+ let
155+ n' = case exts' of
156+ [] -> tn
157+ _ -> "Any" <> tn
158+ return (" toXML (The" <> n' <> " a) = toXML a")
159+ clauses <- mapM mkClause types
160+ writeCode clauses
161+ writeCode [""]
162+ writeCode
163+ [ "instance ToXmlParentAttributes Any" <> baseTypeName <> " where"
164+ ]
165+ let
166+ toAttrLine n = do
167+ tn <- resolveTypeName n
168+ exts' <- extensions n
169+ n' <- case exts' of
170+ [] -> return (tnPrefixed tn)
171+ _ | n == base -> return (tnPrefixed tn)
172+ _ -> return ("Any" <> tnPrefixed tn)
173+ return
174+ [ " toXmlParentAttributes (The" <> n' <> " a) ="
175+ , " (\"{http://www.w3.org/2001/XMLSchema-instance}type\", \""
176+ <> tnName tn <> "\")"
177+ , " : toXmlParentAttributes a"
178+ ]
179+ attrLines <- mapM toAttrLine (base : map fst types)
180+ writeCode (concat attrLines)
181+
182+genDependencies :: References a => a -> Gen ()
183+genDependencies a = forM_ (references a) $ \name -> do
184+ known <- knownTypeName name
185+ case known of
186+ Just _ -> return () -- already generated
187+ Nothing -> do
188+ tp <- resolveType name
189+ genTopType name tp
190+
191+genSimpleType :: TypeName -> Xsd.SimpleType -> [Xsd.Annotation]-> Gen ()
192+genSimpleType tn (Xsd.AtomicType restriction ann) parentAnn = do
334193 let
335− cons = "Xml" <> capitalize n
336− decons = "un" <> cons
337− parser =
338− [ ""
339− , "instance FromDom " <> cons <> " where"
340− , " fromDom = " <> cons <> " <$> fromDom"
341− ]
342− in
343− [ "newtype " <> cons
344− , " = " <> cons
345− , " { " <> decons <> " :: " <> simpleTypeToIsoType Plain sat
346− , " } deriving (Show, Eq, NFData" <> case genType of
347− Parser -> ")"
348− _ -> ", ToXML)"
349− ] <> case genType of
350− Generator -> []
351− _ -> parser
352−
353−generateEnum
354− :: Text -- type name
355− -> [Text] -- enums
356− -> [Text] -- generated code
357−generateEnum enumName enums =
194+ baseName r = case Xsd.simpleRestrictionBase r of
195+ Xsd.Ref n -> Just n
196+ Xsd.Inline (Xsd.AtomicType r' _) -> baseName r'
197+ Xsd.Inline (Xsd.ListType _ _) -> Nothing
198+ Xsd.Inline (Xsd.UnionType _ _) -> Nothing
199+ case baseName restriction of
200+ Just _
201+ | isEnum restriction
202+ -> genEnum tn
203+ (Xsd.simpleRestrictionConstraints restriction)
204+ (parentAnn <> ann)
205+ Just base ->
206+ genNewtype tn base (parentAnn <> ann)
207+ _ -> genUnsupported tn
208+genSimpleType typeName (Xsd.ListType _ _) _ = genUnsupported typeName
209+genSimpleType typeName (Xsd.UnionType _ _) _ = genUnsupported typeName
210+
211+genNewtype :: TypeName -> Xsd.QName -> [Xsd.Annotation] -> Gen ()
212+genNewtype tn base annots = do
213+ fieldTypeName <- tnPrefixed <$> resolveTypeName base
214+ mode <- getMode
358215 let
359− enumHeader = enumName <> " Exhaustive =:= enum Both"
360− eFields = ("& "<>) <$> enums
361− in pure enumHeader <> eFields
362−
363−-- | Returns Just baseTypeName if type is simple, Nothing - otherwise
364−lookupSimpleBaseType
365− :: DatatypeRef
366− -> GenMonad (Maybe SimpleAtomicType)
367−lookupSimpleBaseType (InlineComplex _) = pure Nothing
368−lookupSimpleBaseType (DatatypeRef tyName) = do
369− M.lookup tyName <$> ask >>= \case
370− Just (TypeComplex _) -> pure Nothing
371− Just (TypeSimple (STAtomic _ sat _ _)) -> pure $ Just sat
372− Nothing -> error $ "can't look up type: " <> show tyName
373−
374−lookupSimpleType
375− :: DatatypeRef
376− -> GenMonad (Maybe Text)
377−lookupSimpleType (InlineComplex _) = pure Nothing
378−lookupSimpleType (DatatypeRef tyName) =
379− asks (M.lookup tyName) >>= \case
380− Just (TypeComplex _) -> pure Nothing
381− Just (TypeSimple (STAtomic nam _ _ _)) -> pure $ Just nam
382− Nothing -> error $ "can't look up type: " <> show tyName
383−
384−generateIsoField :: GenType -> Element -> GenMonad Text
385−generateIsoField genType (Element (_, name) xtype minOc maxOc annotations) = do
216+ typeName = tnPrefixed tn
217+ fieldName = "un" <> typeName
218+ toxml = case mode of
219+ Parser -> ""
220+ _ -> ", ToXML"
221+ writeCode $ makeComments tn annots
222+ writeCode
223+ [ "newtype " <> typeName
224+ , " = " <> typeName
225+ , " { " <> fieldName <> " :: " <> fieldTypeName
226+ , " } deriving (Show, Eq, NFData" <> toxml <> ")"
227+ , ""
228+ ]
229+ unless (mode == Generator) $ writeCode
230+ [ "instance FromDom " <> typeName <> " where"
231+ , " fromDom = " <> typeName <> " <$> fromDom"
232+ , ""
233+ ]
234+
235+genEnum :: TypeName -> [Xsd.Constraint] -> [Xsd.Annotation] -> Gen ()
236+genEnum tn constraints annots = do
237+ mode <- getMode
386238 let
387− qualifier = toQualifier minOc maxOc
388− line <- lookupSimpleType xtype >>= \case
389− Just tyName -> do
390− pure $ quote name <> " [t|Xml" <> tyName <> "|]"
391− Nothing -> case xtype of
392− InlineComplex dt -> do
393− generateIsoDatatype genType (Just $ capitalize name) dt annotations
394− pure $ quote name
395− DatatypeRef ref ->
396− pure $ quote name <> " [t|Xml" <> capitalize ref <> "|]"
397− pure $ " " <> qualifier <> " " <> line
239+ values = map toValue constraints
240+ toValue (Xsd.Enumeration v) = v
241+ enumLines <- forM values $ \v -> do
242+ enumName <- makeEnumName v
243+ return (" & \"" <> enumName <> "\"")
244+ writeCode $ makeComments tn annots
245+ writeCode $ "\"" <> tnName tn <> "\" Exhaustive =:= enum "
246+ <> genTypeToText mode : enumLines
247+ writeCode [""]
248+
249+isEnum :: Xsd.SimpleRestriction -> Bool
250+isEnum = any isEnumConstraint . Xsd.simpleRestrictionConstraints
251+ where
252+ isEnumConstraint (Xsd.Enumeration _) = True
253+
254+genComplexType :: TypeName -> Xsd.ComplexType -> [Xsd.Annotation] -> Gen ()
255+genComplexType typeName t parentAnn = do
256+ mode <- getMode
257+ let
258+ header = "\"" <> tnName typeName <> "\" =:= record "
259+ <> genTypeToText mode
260+ fields <- genFields typeName (Xsd.complexContent t)
261+ writeCode $ makeComments typeName
262+ (parentAnn <> Xsd.complexAnnotations t)
263+ writeCode [header]
264+ writeCode fields
265+ writeCode [""]
266+
267+makeComments :: TypeName -> [Xsd.Annotation] -> [Text]
268+makeComments typeName annotations = if null annotations
269+ then
270+ [ "{-|"
271+ , generated
272+ , "-}"
273+ ]
274+ else
275+ [ "{-|"
276+ , generated
277+ , ""
278+ ] <> map makeDoc annotations <>
279+ [ "-}"
280+ ]
281+ where
282+ generated = "Generated from: " <> prefix <> name
283+ qname = tnQName typeName
284+ name = Xsd.qnName qname
285+ prefix = maybe "" ((<> ":") . Xsd.fromNamespace) (Xsd.qnNamespace qname)
286+ makeDoc (Xsd.Documentation docs) = docs
287+
288+-- | Generate code for record fields
289+--
290+-- The first argument - record name
291+genFields :: TypeName -> Xsd.Content -> Gen [Text]
292+genFields typeName (Xsd.ContentPlain c) =
293+ maybe (return []) (genFieldsForModel typeName) (Xsd.plainContentModel c)
294+genFields _ (Xsd.ContentSimple _) = return []
295+genFields typeName (Xsd.ContentComplex (Xsd.ComplexContentExtension e)) = do
296+ base <- resolveType (Xsd.complexExtensionBase e)
297+ genDependencies base
298+ baseFields <- case base of
299+ Xsd.TypeComplex t -> genFields typeName (Xsd.complexContent t)
300+ _ -> return []
301+ fields <- maybe (return []) (genFieldsForModel typeName)
302+ (Xsd.complexExtensionModel e)
303+ return (baseFields ++ fields)
304+genFields _ (Xsd.ContentComplex (Xsd.ComplexContentRestriction _)) =
305+ return []
306+
307+genFieldsForModel :: TypeName -> Xsd.ModelGroup -> Gen [Text]
308+genFieldsForModel typeName (Xsd.Sequence elements) =
309+ catMaybes <$> mapM (genField typeName) elements
310+genFieldsForModel _ (Xsd.Choice _) = do
311+ warn "choice: not implemented"
312+ return []
313+genFieldsForModel _ (Xsd.All _) = do
314+ warn "all: not implemented"
315+ return []
316+
317+genField :: TypeName -> Xsd.RefOr Xsd.Element -> Gen (Maybe Text)
318+genField _ (Xsd.Ref _) = return Nothing
319+genField typeName (Xsd.Inline e) = do
320+ fieldName <- makeFieldName typeName (Xsd.elementName e)
321+
322+ fieldTypeName <- case Xsd.elementType e of
323+ Xsd.Ref name -> do
324+ tn <- tnPrefixed <$> resolveTypeName name
325+ exts <- extensions name
326+ case exts of
327+ [] -> return tn
328+ _ -> return ("Any" <> tn)
329+ Xsd.Inline t -> do
330+ genType (Xsd.elementAnnotations e) (Xsd.elementName e) t
331+ tnPrefixed <$> resolveTypeName (Xsd.elementName e)
332+
333+ qualifier <- makeQualifier (Xsd.elementOccurs e)
398334
399−main :: IO ()
400−main = do
401− (inFile:mode:_) <- getArgs
402− xml <- BL.readFile inFile
403335 let
404− xsd = case parseXSD def xml of
405− Right xsd' -> xsd'
406− Left e -> error $ show e
407− T.hPutStrLn stdout $ generateIsoXml (read mode) xsd
336+ fieldType = if Xsd.elementNillable e
337+ then "Nillable " <> fieldTypeName
338+ else fieldTypeName
339+
340+ return $ Just $ mconcat
341+ [ " "
342+ , qualifier
343+ , " \""
344+ , fieldName
345+ , "\" [t|"
346+ , fieldType
347+ , "|]"
348+ ]
349+
350+makeQualifier :: (Int, Xsd.MaxOccurs) -> Gen Text
351+makeQualifier (minOcc, maxOcc) = case maxOcc of
352+ Xsd.MaxOccursUnbound -> toQualifier minOcc maxBound
353+ Xsd.MaxOccurs v -> toQualifier minOcc v
354+
355+toQualifier :: Int -> Int -> Gen Text
356+toQualifier 1 1 = return "!"
357+toQualifier 0 1 = return "?"
358+toQualifier 1 maxOcc
359+ | maxOcc < 1
360+ = genError "maxOccurs < minOccurs"
361+toQualifier 1 maxOcc
362+ | maxOcc > 1
363+ = return "+"
364+toQualifier _ _ = return "*"
365+
366+genUnsupported :: TypeName -> Gen ()
367+genUnsupported tn = do
368+ let typeName = tnPrefixed tn
369+ warn $ "generating stub for unsupported construct in " <> typeName
370+ mode <- getMode
371+ writeCode (makeComments tn [])
372+ writeCode
373+ [ "data " <> typeName <> " = " <> typeName
374+ , " deriving (Eq, Show)"
375+ , ""
376+ , "instance NFData " <> typeName <> " where"
377+ , " rnf _ = ()"
378+ , ""
379+ ]
380+
381+ unless (mode == Parser) $ writeCode
382+ [ "instance ToXML " <> typeName <> " where"
383+ , " toXML _ = comment \"" <> typeName <> "\""
384+ , ""
385+ ]
386+
387+ unless (mode == Generator) $ writeCode
388+ [ "instance FromDom " <> typeName <> " where"
389+ , " fromDom = undefined"
390+ , ""
391+ ]
392+
393+genHeader :: Options -> Gen ()
394+genHeader opts = do
395+ case oHeader opts of
396+ Nothing -> return ()
397+ Just h -> do
398+ writeCode . fmap ("-- " <>) . Text.lines $ h
399+ writeCode [""]
400+
401+ writeCode
402+ [ "{-# OPTIONS_GHC -Wno-unused-imports #-}"
403+ , "module " <> oModule opts <> " where"
404+ , ""
405+ , "import Control.DeepSeq"
406+ , "import Data.Scientific"
407+ , "import Data.THGen.XML"
408+ ]
409+ writeCode imports
410+ writeCode
411+ [ "import Prelude hiding ((*), (+))"
412+ , ""
413+ , ""
414+ ]
415+ where
416+ imports = case oMode opts of
417+ Generator -> [ xmlWriter, parentAttr ]
418+ Parser -> [ domParser ]
419+ ParserAndGenerator -> [ domParser, xmlWriter, parentAttr ]
420+ xmlWriter = "import Text.XML.Writer"
421+ parentAttr = "import Text.XML.ParentAttributes"
422+ domParser = "import Text.XML.DOM.Parser"
423+
424+-- | We populate the initial state with all built-in types to make sure
425+-- they will be correctly resolved
426+initialGenState :: Options -> Map Xsd.QName Xsd.Type -> GenState
427+initialGenState opts types = GenState
428+ { gsTypes = types
429+ , gsExtensions = collectExtensions types
430+ , gsKnownTypes = builtInTypes
431+ , gsBoundTypeName = Set.empty
432+ , gsBoundFields = Set.empty
433+ , gsMode = oMode opts
434+ , gsCode = []
435+ , gsWarnings = []
436+ }
437+
438+collectExtensions
439+ :: Map Xsd.QName Xsd.Type
440+ -> Map Xsd.QName [(Xsd.QName, Xsd.Type)]
441+collectExtensions = List.foldl' step Map.empty . Map.toList
442+ where
443+ step exts (n, t) = case baseOf t of
444+ Nothing -> exts
445+ Just base -> Map.insertWith (++) base [(n, t)] exts
446+ baseOf (Xsd.TypeSimple _) = Nothing
447+ baseOf (Xsd.TypeComplex t) = case Xsd.complexContent t of
448+ Xsd.ContentComplex (Xsd.ComplexContentExtension e) ->
449+ Just (Xsd.complexExtensionBase e)
450+ _ -> Nothing