@@ -14,6 +14,7 @@
1414module Text.XML.Lens (
1515 -- * Lenses, traversals for 'Element'
1616 Element(..)
17+ , (./)
1718 , (...)
1819 -- ** Names
1920 , name
@@ -24,8 +25,6 @@ module Text.XML.Lens (
2425 -- ** Attributes
2526 , attributeIs
2627 , attributeSatisfies
27− , attributeSatisfies'
28− , withoutAttribute
2928 , attr
3029 , attribute
3130 , attrs
@@ -33,6 +32,7 @@ module Text.XML.Lens (
3332 , text
3433 , comment
3534 -- ** Children
35+ , entire
3636 , nodes
3737 -- * Prisms for 'Node'
3838 , Node(..)
@@ -60,48 +60,42 @@ import Text.XML
6060import Control.Lens
6161import Data.Text (Text)
6262import Data.Map (Map)
63+import Control.Applicative
6364import qualified Data.CaseInsensitive as CI
64−import Data.Maybe (isNothing)
65+
66+infixr 9 ./
6567
6668prologue :: Lens' Document Prologue
6769prologue f doc = fmap (\p -> doc { documentPrologue = p} ) $ f $ documentPrologue doc
68−{-# INLINE prologue #-}
6970
7071-- | The root element of the document.
7172root :: Lens' Document Element
7273root f doc = fmap (\p -> doc { documentRoot = p} ) $ f $ documentRoot doc
73−{-# INLINE root #-}
7474
7575epilogue :: Lens' Document [Miscellaneous]
7676epilogue f doc = fmap (\p -> doc { documentEpilogue = p} ) $ f $ documentEpilogue doc
77−{-# INLINE epilogue #-}
7877
7978doctype :: Lens' Prologue (Maybe Doctype)
8079doctype f doc = fmap (\p -> doc { prologueDoctype = p} ) $ f $ prologueDoctype doc
81−{-# INLINE doctype #-}
8280
8381class AsInstruction t where
8482 _Instruction :: Prism' t Instruction
8583
8684_instructionTarget :: Lens' Instruction Text
8785_instructionTarget f (Instruction t d) = f t <&> \t' -> Instruction t' d
88−{-# INLINE _instructionTarget #-}
8986
9087_instructionData :: Lens' Instruction Text
9188_instructionData f (Instruction t d) = f d <&> \d' -> Instruction t d'
92−{-# INLINE _instructionData #-}
9389
9490instance AsInstruction Node where
9591 _Instruction = prism' NodeInstruction $ \s -> case s of
9692 NodeInstruction e -> Just e
9793 _ -> Nothing
98− {-# INLINE _Instruction #-}
9994
10095instance AsInstruction Miscellaneous where
10196 _Instruction = prism' MiscInstruction $ \s -> case s of
10297 MiscInstruction e -> Just e
10398 _ -> Nothing
104− {-# INLINE _Instruction #-}
10599
106100class AsComment t where
107101 _Comment :: Prism' t Text
@@ -110,41 +104,33 @@ instance AsComment Node where
110104 _Comment = prism' NodeComment $ \s -> case s of
111105 NodeComment e -> Just e
112106 _ -> Nothing
113− {-# INLINE _Comment #-}
114107
115108instance AsComment Miscellaneous where
116109 _Comment = prism' MiscComment $ \s -> case s of
117110 MiscComment e -> Just e
118111 _ -> Nothing
119− {-# INLINE _Comment #-}
120112
121113_nameLocalName :: Lens' Name Text
122114_nameLocalName f n = f (nameLocalName n) <&> \x -> n { nameLocalName = x }
123−{-# INLINE _nameLocalName #-}
124115
125116_nameNamespace :: Lens' Name (Maybe Text)
126117_nameNamespace f n = f (nameNamespace n) <&> \x -> n { nameNamespace = x }
127−{-# INLINE _nameNamespace #-}
128118
129119_namePrefix :: Lens' Name (Maybe Text)
130120_namePrefix f n = f (namePrefix n) <&> \x -> n { namePrefix = x }
131−{-# INLINE _namePrefix #-}
132121
133122_Element :: Prism' Node Element
134123_Element = prism' NodeElement $ \s -> case s of
135124 NodeElement e -> Just e
136125 _ -> Nothing
137−{-# INLINE _Element #-}
138126
139127_Content :: Prism' Node Text
140128_Content = prism' NodeContent $ \s -> case s of
141129 NodeContent e -> Just e
142130 _ -> Nothing
143−{-# INLINE _Content #-}
144131
145132name :: Lens' Element Name
146133name f e = f (elementName e) <&> \x -> e { elementName = x }
147−{-# INLINE name #-}
148134
149135localName :: Lens' Element Text
150136localName = name . _nameLocalName
@@ -152,65 +138,63 @@ localName = name . _nameLocalName
152138
153139attrs :: Lens' Element (Map Name Text)
154140attrs f e = fmap (\x -> e { elementAttributes = x }) $ f $ elementAttributes e
155−{-# INLINE attrs #-}
156141
157142nodes :: Lens' Element [Node]
158143nodes f e = fmap (\x -> e { elementNodes = x }) $ f $ elementNodes e
159−{-# INLINE nodes #-}
160144
161145attr :: Name -> Traversal' Element Text
162146attr n = attrs . ix n
163−{-# INLINE attr #-}
164147
165148attribute :: Name -> Lens' Element (Maybe Text)
166149attribute n = attrs . at n
167−{-# INLINE attribute #-}
150+
151+-- | Traverse itself with its all children. Rewriting subnodes of each children will break a traversal law.
152+entire :: Traversal' Element Element
153+entire f e@(Element _ _ ns) = com <$> f e <*> traverse (_Element (entire f)) ns where
154+ com (Element n a _) = Element n a
155+{-# DEPRECATED entire "Use cosmos or deep instead" #-}
168156
169157-- | Traverse elements which has the specified *local* name (case-insensitive).
170158named :: CI.CI Text -> Traversal' Element Element
171159named n f s
172160 | CI.mk (nameLocalName (elementName s)) == n = f s
173161 | otherwise = pure s
174−{-# INLINE named #-}
175162
176163-- | Old name for 'named'
177164ell :: Text -> Traversal' Element Element
178−ell n = named $ CI.mk n
165+ell = named . CI.mk
179166
180167-- | Traverse elements which has the specified name.
181168el :: Name -> Traversal' Element Element
182169el n f s
183170 | elementName s == n = f s
184171 | otherwise = pure s
185−{-# DEPRECATED el "Use named instead" #-}
186172
187173attributeSatisfies :: Name -> (Text -> Bool) -> Traversal' Element Element
188−attributeSatisfies n p = attributeSatisfies' n (maybe False p)
189−{-# INLINE attributeSatisfies #-}
190−
191−attributeSatisfies' :: Name -> (Maybe Text -> Bool) -> Traversal' Element Element
192−attributeSatisfies' n p = filtered (p . preview (attrs . ix n))
193−{-# INLINE attributeSatisfies' #-}
194−
195−withoutAttribute :: Name -> Traversal' Element Element
196−withoutAttribute n = attributeSatisfies' n isNothing
197−{-# INLINE withoutAttribute #-}
174+attributeSatisfies n p = filtered (maybe False p . preview (attrs . ix n))
198175
199176attributeIs :: Name -> Text -> Traversal' Element Element
200177attributeIs n v = attributeSatisfies n (==v)
201−{-# INLINE attributeIs #-}
202178
203179-- | Traverse all contents of the element.
204180text :: Traversal' Element Text
205181text = nodes . traverse . _Content
206−{-# INLINE text #-}
207182
208183-- | Traverse all comments of the element.
209184comment :: Traversal' Element Text
210185comment = nodes . traverse . _Comment
211−{-# INLINE comment #-}
212186
213187-- | 'plate' traverses over its sub-elements.
214188instance Plated Element where
215189 plate = nodes . traverse . _Element
216− {-# INLINE plate #-}
190+
191+-- | Combine two 'Traversal's just like XPath's slash. Identical to ('...').
192+--
193+-- @
194+-- l ./ m ≡ l . 'plate' . m
195+-- @
196+(./) :: (Applicative f, Plated c) => LensLike f s t c c -> Over p f c c a b -> Over p f s t a b
197+(./) = (...)
198+{-# INLINE (./) #-}
199+
200+{-# DEPRECATED (./) "Use (...) instead" #-}