Dalap is an extremely flexible tree-walking / tree-transformation
library for Clojure and Clojurescript. It is the foundation of
dalap-html, an html templating/serialization library
(similar to hiccup and enlive), and lein-dalap, a
Clojure->Clojurescript code transformation tool.
The name is the acronym for Decide As Late As Possible, from lean programming.
The namespace dalap.walk provides Walker, which is a wrapper
around a visitor function (a multimethod or a single function from a
Protocol). It simplifies the recursive invocation of the visitor over
a seq of objects (possibly nested) and makes it possible to:
a) decorate or replace the visitor for sub-regions of the tree and
b) maintain traversal state if needed.
The namespace dalap.rules implements a css-like selector+transformer
rules system, which allows you to selectively transform portions of a
tree. See lein-dalap for an example of this in action.
See the test suite or the packages dalap-html and lein-dalap for usage examples.
Copyright (C) 2012 Birdseye Software Inc.
Distributed under the MIT License.