Library user should be able to add his own functions

[SomMeri]

No description provided.

[alexo]

There is a question posted on the wro4j mailing list (https://groups.google.com/forum/#!topic/wro4j/QWulX8bTaVI) and I am wondering how this will be implemented in less4j?

[SomMeri]

I planned to add a new customFunctions property to Configuration object and unknown functions would be passed to that object.

The tricky part is to decide how to pass arguments to custom functions:

• I do not want to expose AstCssNode hierarchy to API, because that would make all refactorings difficult.
• Passing arguments as String or something similar would be too limiting on the other hand.

[alexo]

But what is the mechanism to evaluate the javascript code on the server-side? Will rhiino be used for that purpose?

[SomMeri]

I planned to allow java implemented functions. The user could then implement them in whatever language he likes and whatever compiler/interpreter for that language he likes.

Offtopic: support for inline javascript is tracked here #22 my take at it here

[SomMeri]

Documentation: https://github.com/SomMeri/less4j/wiki/Extending-Less-Language