Text.XML.Expat.Lens.Generic

A Hexpat lens module for generic tags.

Lenses provide power to do very concise XML tree diving. This module provides a less general interface to the Hexpat datatypes via lenses.

Basic inspection

name :: Traversal' (NodeG f tag text) tag

Traverses the name of an Element. This is as an Affine, or 0-or-1 target, Traversal. In regex terms, you can think of it like the ? suffix modifier.

attributes :: Traversal' (NodeG f tag text) (Attributes tag text)

Traverses to the list of attributes of an Element. This is as an Affine, or 0-or-1 target, Traversal. In regex terms, you can think of it like the ? suffix modifier.

text :: Prism' (NodeG f tag text) text

Prismatic access to the text of a Text node. This is more powerful than name, children, and attributes since it can be Reviewed.

Recursive inspection

children :: Traversal' (NodeG f tag text) (f (NodeG f tag text))

Traverses the children of an Element. This is as an Affine, or 0-or-1 target, Traversal. In regex terms, you can think of it like the ? suffix modifier.

allNodes :: Traversable c => NodeG c tag text -> [NodeG c tag text]

Produces a list of all UNodes in a XML tree. Synonym for universe.

Filters

named :: (Choice p, Applicative f, Eq t) => t -> Overloaded' p f (UNode t) (UNode t)

Traverses Elements which have a particular name.

parameterized :: (Choice p, Applicative f, Eq t, GenericXMLString t) => t -> t -> Overloaded' p f (UNode t) (UNode t)

parameterized k v traverses Elements which match the value v at the key k in their attributes.