Hi,
You may be interested in the net.cgrand.parsley.functional-trees and
net.cgrand.parsley.views namespaces.
you need to pass options :make-node fnode and :make-leaf :fleaf to your
parser.
Now the result of parse-tree is not a tree anymore but an opaque object (a
function).
.
You can then compute views on the tree.
The #'as-map view will return the usual parse-tree, and the #'length and
#'offsets view should be close to what you are looking for.
Views are managed in an iincremental manner.
offsets are relative and not absolute because
absolute offsets are too brittle towards incremetalism.
Let me know if it helps you.
Christophe
On Thu, Aug 22, 2013 at 11:20 PM, Jörg Winter <jwin1...@gmail.com> wrote:
> Hi,
>
> Is there any existing option/fn to get the offsets and lengths of parsed
> content ?
>
> For example for this:
> > (-> sexpr p/incremental-buffer (p/edit 0 0 "(") (p/edit 1 0 "x)")
> p/parse-tree clojure.pprint/pprint)
>
> ...instead of:
>
> {:tag :root,
> :content
> [{:tag :list, :content ["(" {:tag :symbol, :content ["x"]} ")"]}]}
>
> ...getting something like this:
>
> {:tag :root,
> :content
> [{:tag :list, :offset 0, :length 3, :content ["(" {:tag :symbol, :offset
> 1, :length 1, :content ["x"]} ")"]}]}
>
> ?
>
> I guess project "paredit.clj" also does this more or less.. I just don't
> find the simplest fn to do this in its purest form.
>
> Best,
> Joerg
>
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