purescript-xpath-like
Utility functions for XPaths.
Usage
Path Concatenation using //
recP :: String
recP = "record"
idP :: String
idP = "identifier"
recFromRootP :: String
recFromRootP = root // recP
idFromRootP :: String
idFromRootP = recFromRootP // idP
-- idFromRootP == "/record/identifier"
Path Concatentation with Dummy Namespace using /?
This mode of usage is particularly handy when dealing with subtleties sometimes present in XPath evaluation strategies dealing with namespaces. For examples of how this might be used in practice see examples in the tests for purescript-web-dom-xpath
recP :: String
recP = "record"
idP :: String
idP = "identifier"
recFromRootP :: String
recFromRootP = root /? recP
idFromRootP :: String
idFromRootP = recFromRootP /? idP
-- idFromRootP == "/x:record/x:identifier"
Beyond Strings
If you want more safety you can use an XPath newtype like this, instead of
using String directly, but so far, I haven't seen any advantage in
standardizing this (open an issue if you have thoughts):
newtype XPath = XPath String
derive instance newtypeXPath :: Newtype XPath _We could also probably go further by typing Attributes vs Non-attribute paths, etc.
Installation
bower install purescript-xpath-like
Documentation
Module documentation is published on Pursuit.
Tests
npm run test