Text.XML.HaXml.Xtract.Parse

HaXml-1.25.3: Utilities for manipulating XML documents

Safe Haskell | Safe
Language | Haskell98

Text.XML.HaXml.Xtract.Parse

Description

A parser for the Xtract command-language. (The string input is tokenised internally by the lexer `lexXtract`.) See http://www.haskell.org/HaXml/Xtract.html for the grammar that is accepted.

Synopsis

- parseXtract :: [Token] -> DFilter i
- xtract :: (String -> String) -> String -> CFilter i

# Documentation

parseXtract :: [Token] -> DFilter i

The cool thing is that the Xtract command parser directly builds a higher-order `DFilter` (see Text.XML.HaXml.Xtract.Combinators) which can be applied to an XML document without further ado. (`parseXtract` halts the program if a parse error is found.)

xtract :: (String -> String) -> String -> CFilter i

To convert an Xtract query into an ordinary HaXml combinator expression. First arg is a tag-transformation function (e.g. map toLower) applied