View source for XQuery Development Tools/Extension points

This page describes XQDT extension points. 

== Customizing lexer and parser<br>  ==

XQDT provides a tokenizer and an ad-hoc incremental parser for the XQuery family languages standardized (or being standardized) by the W3C. Vendors-specific language extension can be achieved by providing vendor-specific lexer and parser, using the following extension points: 

-&nbsp;org.eclipse.wst.xquery.sse.core.tokenizer: XQuery tokenizer. Must implement ITokenizer. XQDT tokenizer is based on [http://jflex.de/ JFlex]. Since JFlex does not come with a extension mechanism, one solution is for each vendor to change directly the base tokenizer and to manually patch any changes. 

-&nbsp;org.eclipse.wst.xquery.sse.core.modelBuilder: incremental XQuery parser responsible for updating the model (AST).