HaXml 1.22 → 1.22.1
raw patch · 4 files changed
+1031/−1 lines, 4 filesdep ~base
Dependency ranges changed: base
Files
- HaXml.cabal +3/−1
- LICENCE-GPL +343/−0
- LICENCE-LGPL +508/−0
- src/Text/XML/HaXml/Schema/Environment.hs +177/−0
HaXml.cabal view
@@ -1,5 +1,5 @@ name: HaXml-version: 1.22+version: 1.22.1 license: LGPL license-file: COPYRIGHT author: Malcolm Wallace <Malcolm.Wallace@me.com>@@ -12,6 +12,7 @@ generating XML documents. build-type: Simple cabal-version: >=1.2+extra-source-files: LICENCE-GPL, LICENCE-LGPL flag splitBase default: True@@ -46,6 +47,7 @@ Text.XML.HaXml.Schema.TypeConversion, Text.XML.HaXml.Schema.PrettyHaskell, Text.XML.HaXml.Schema.PrimitiveTypes,+ Text.XML.HaXml.Schema.Environment, Text.XML.HaXml.ShowXmlLazy, Text.XML.HaXml.Types, Text.XML.HaXml.TypeMapping,
+ LICENCE-GPL view
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+ src/Text/XML/HaXml/Schema/Environment.hs view
@@ -0,0 +1,177 @@+{-# LANGUAGE PatternGuards #-}+module Text.XML.HaXml.Schema.Environment+ ( module Text.XML.HaXml.Schema.Environment+ ) where++import Text.XML.HaXml.Types (QName(..),Name(..),Namespace(..))+import Text.XML.HaXml.Schema.XSDTypeModel+import Text.XML.HaXml.Schema.NameConversion (wordsBy)+import Text.XML.HaXml.Schema.Parse (targetPrefix)++import qualified Data.Map as Map+import Data.Map (Map)+import Data.List (foldl')++-- Some things we probably want to do.+-- * Build Maps from :+-- typename to definition+-- element name to definition+-- attribute name to definition+-- (element) group to definition+-- attribute group to definition+-- abstract complextype to its extension types+-- substitution group to its substitutable elements+-- abstract/substGroup to defining module+-- * XSD types become top-level types in Haskell.+-- * XSD element decls also become top-level types in Haskell.+-- * Element groups get their own Haskell types too.+-- * Attributes and attribute groups do not become types, they are+-- simply constituent parts of an element.+-- * Resolve element/attribute references by inlining their names.++-- If a complextype definition includes nested in-line decls of other+-- types, we need to be able to lift them out to the top-level, then+-- refer to them by name only at the nested position(?)++data Environment = Environment+ { env_type :: Map QName (Either SimpleType ComplexType)+ , env_element :: Map QName ElementDecl+ , env_attribute :: Map QName AttributeDecl+ , env_group :: Map QName Group+ , env_attrgroup :: Map QName AttrGroup+ , env_namespace :: Map String{-URI-} String{-Prefix-}+ , env_extendty :: Map QName [(QName,FilePath)] -- ^ supertype -> subtypes+ , env_substGrp :: Map QName [(QName,FilePath)] -- ^ substitution groups+ , env_typeloc :: Map QName FilePath -- ^ where type is defined+ }++-- | An empty environment of XSD type mappings.+emptyEnv :: Environment+emptyEnv = Environment Map.empty Map.empty Map.empty Map.empty Map.empty+ Map.empty Map.empty Map.empty Map.empty++-- | Combine two environments (e.g. read from different interface files)+combineEnv :: Environment -> Environment -> Environment+combineEnv e1 e0 = Environment+ { env_type = Map.union (env_type e1) (env_type e0)+ , env_element = Map.union (env_element e1) (env_element e0)+ , env_attribute = Map.union (env_attribute e1) (env_attribute e0)+ , env_group = Map.union (env_group e1) (env_group e0)+ , env_attrgroup = Map.union (env_attrgroup e1) (env_attrgroup e0)+ , env_namespace = Map.union (env_namespace e1) (env_namespace e0)+ , env_extendty = Map.unionWith (++) (env_extendty e1) (env_extendty e0)+ , env_substGrp = Map.unionWith (++) (env_substGrp e1) (env_substGrp e0)+ , env_typeloc = Map.union (env_typeloc e1) (env_typeloc e0)+ }++-- | Build an environment of XSD type mappings from a schema module.+mkEnvironment :: FilePath -> Schema -> Environment -> Environment+mkEnvironment fp s init = foldl' item (addNS init (schema_namespaces s))+ (schema_items s)+ where+ -- think about qualification, w.r.t targetNamespace, elementFormDefault, etc+ item env (Include _ _) = env+ item env (Import _ _ _) = env+ item env (Redefine _ _) = env -- revisit this+ item env (Annotation _) = env+ item env (Simple st) = simple env st+ item env (Complex ct) = complex env ct+ item env (SchemaElement e) = elementDecl env e+ item env (SchemaAttribute a) = attributeDecl env a+ item env (AttributeGroup g) = attrGroup env g+ item env (SchemaGroup g) = group env g++ simple env s@(Restricted _ (Just n) _ _)+ = env{env_type=Map.insert (mkN n) (Left s)+ (env_type env)}+ simple env s@(ListOf _ (Just n) _ _)+ = env{env_type=Map.insert (mkN n) (Left s)+ (env_type env)}+ simple env s@(UnionOf _ (Just n) _ _ _)+ = env{env_type=Map.insert (mkN n) (Left s)+ (env_type env)}+ simple env _ = env++ -- Only toplevel names have global scope.+ -- Should we lift local names to toplevel with prefixed names?+ -- Or thread the environment explicitly through every tree-walker?+ -- Or resolve every reference to its referent in a single resolution pass?+ -- (Latter not good, because it potentially duplicates exprs?)+ complex env c+ | Nothing <- complex_name c = env+ | Just n <- complex_name c =+ either (const id)+ (\extn env->+ env{env_extendty = Map.insertWith (++)+ (extension_base extn)+ [(mkN n, fp)]+ (env_extendty env)})+ (isExtn (complex_content c))+ $ env{env_type=Map.insert (mkN n) (Right c) (env_type env)+ ,env_typeloc=Map.insert (mkN n) fp (env_typeloc env)}+ where isExtn x@SimpleContent{} = ci_stuff x+ isExtn x@ComplexContent{} = ci_stuff x+ isExtn x@ThisType{} = Left undefined+{-+ | Nothing <- complex_name c = env+ | Right extn <- isExtn $ complex_content c+ , Just n <- complex_name c = env{env_extendty =+ Map.insertWith (++)+ (extension_base extn)+ [(mkN n, isFwd)]+ (env_extendty env)+ ,env_type=Map.insert (mkN n) (Right c)+ (env_type env)}+ | Just n <- complex_name c = env{env_type=Map.insert (mkN n) (Right c)+ (env_type env)}+ where isExtn x@SimpleContent{} = ci_stuff x+ isExtn x@ComplexContent{} = ci_stuff x+ isExtn x@ThisType{} = Left undefined+ isFwd = case Map.lookup (extension_base extn) (env_typeloc env) of+ Nothing -> error $ "unknown supertype of "++show c+ Just mod -> mod /= fp+-}+ elementDecl env e+ | Right r <- elem_nameOrRef e = env+-- | Just sg <- elem_substGroup e+-- , Left nt <- elem_nameOrRef e = env{env_substGrp=Map.insertWith (++) sg+-- [(mkN $ theName nt, isFwd sg)]+-- (env_substGrp env)+-- ,env_element=Map.insert+-- (mkN $ theName nt) e+-- (env_element env)}+ | Left nt <- elem_nameOrRef e =+ maybe id (\sg env-> env{env_substGrp=Map.insertWith (++) sg+ [(mkN $ theName nt, fp)]+ (env_substGrp env)})+ (elem_substGroup e)+ $ env{env_element=Map.insert (mkN $ theName nt) e+ (env_element env)+ ,env_typeloc=Map.insert (mkN $ theName nt) fp+ (env_typeloc env)}+ attributeDecl env a+ | Right r <- attr_nameOrRef a = env+ | Left nt <- attr_nameOrRef a = env{env_attribute=+ Map.insert (mkN $ theName nt) a+ (env_attribute env)}+ attrGroup env g+ | Right r <- attrgroup_nameOrRef g = env+ | Left n <- attrgroup_nameOrRef g = env{env_attrgroup=Map.insert+ (mkN n) g+ (env_attrgroup env)}+ group env g+ | Right r <- group_nameOrRef g = env+ | Left n <- group_nameOrRef g = env{env_group=Map.insert (mkN n) g+ (env_group env)}+ mkN = N . last . wordsBy (==':')++ addNS env nss = env{env_namespace = foldr newNS (env_namespace env) nss}+ where newNS ns env = Map.insert (nsURI ns) (nsPrefix ns) env++-- | Find all direct module dependencies.+gatherImports :: Schema -> [(FilePath, Maybe String)]+gatherImports s =+ [ (f,Nothing) | (Include f _) <- schema_items s ] +++ [ (f,ns) | (Import uri f _) <- schema_items s+ , let ns = targetPrefix (Just uri) (schema_namespaces s) ]+