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;; Copyright (c) Nicola Mometto, Rich Hickey & contributors.
;; The use and distribution terms for this software are covered by the
;; Eclipse Public License 1.0 (
;; which can be found in the file epl-v10.html at the root of this distribution.
;; By using this software in any fashion, you are agreeing to be bound by
;; the terms of this license.
;; You must not remove this notice, or any other, from this software.
(defn index-vector-nodes
"Adds an :idx attribute to nodes in vector children, representing the position
of the node vector."
(merge ast
(reduce (fn [m c]
(let [v (c ast)
v (if (vector? v)
(mapv (fn [x i] (assoc x :idx i ))
v (range))
(assoc m c v))) {} (:children ast))))
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