com.nkutsche:xpath-model

XPath XML Model

This project contains an XPath parser and creates an XML model from it.

Documentation Links

• Release Notes
• Wiki

Basic Idea

The model can be used to make deeper analyzis, convert or serialize the expression to normalize XPath expressions.

An XPath normalizer could:

• normalize ignoreable whitespace
• remove/normalize ignoreable brackets
• indention of the expressions

An analyzer could make statements abould:

• used/unused functions or variables
• validation of XPath version (I want to use XPath 2.0 only features though my processor supports 3.0)
• used location steps (comparing to a given schema?)

A converter could manipulate given XPath expressions:

• wrap all location steps by a function call
• wrap all sub expressions by a function call
• ...?

Standard conformance

• The core parser in this project is generated based on an EBNF file which defines XPath 3.1 using the REx Parser Generator (see Contribute).
• There is an extra testing project that ensures that all valid expressions in the QT3 testsuite (~15k test cases):
  • are parsed to a valid model
  • can be parsed and re-serialized without any relevant changes.

Contribute

This project is based on the work of others. It uses:

• An XSLT parser for XPath generated by the REx Parser Generator
• An XSLT based implementation of Relax NG by @maxtoroq