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reimplement codewalker so it works with NONE

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nathanmarz 2017-06-01 02:38:20 -04:00
parent 340d6d3065
commit d0ff9bbc35
2 changed files with 24 additions and 9 deletions
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3
CHANGES.md
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@ -3,6 +3,9 @@
* Added `pred=`, `pred<`, `pred>`, `pred<=`, `pred>=` for filtering using common comparisons
* Add `map-key` navigator
* Add `set-elem` navigator
* Add `ALL-WITH-META` navigator
* `walker` and `codewalker` can now be used with `NONE` to remove elements
* Extend `ALL` to work on records (navigate to key/value pairs)
* Workaround ClojureScript bug that emits warnings for vars named the same as a private var in cljs.core (in this case `NONE`, added as private var to cljs.core with 1.9.562)
* For ALL transforms on maps, interpret transformed key/value pair of size < 2 as removal
* Bug fix: Fix incorrect inline compilation when a dynamic function invocation is nested in a data structure within a parameter to a navigator builder

30
src/clj/com/rpl/specter.cljc
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@ -652,6 +652,19 @@
(transform* [this structure next-fn]
(n/all-transform structure next-fn)))
(defnav
^{:doc "Same as ALL, except maintains metadata on the structure."}
ALL-WITH-META
[]
(select* [this structure next-fn]
(n/all-select structure next-fn))
(transform* [this structure next-fn]
(let [m (meta structure)
res (n/all-transform structure next-fn)]
(if (some? res)
(with-meta res m)
))))
(defnav
^{:doc "Navigate to each value of the map. This is more efficient than
navigating via [ALL LAST]"}
@ -827,15 +840,6 @@
(merge (reduce dissoc structure m-keys)
newmap))))
(defnav
^{:doc "Like `walker` but maintains metadata of any forms traversed."}
codewalker
[afn]
(select* [this structure next-fn]
(i/walk-select afn next-fn structure))
(transform* [this structure next-fn]
(i/codewalk-until afn next-fn structure)))
(defdynamicnav subselect
"Navigates to a sequence that contains the results of (select ...),
but is a view to the original structure that can be transformed.
@ -1286,3 +1290,11 @@
(cond-path (pred apred) STAY
coll? [ALL p]
)))
(def
^{:doc "Like `walker` but maintains metadata of any forms traversed."}
codewalker
(recursive-path [apred] p
(cond-path (pred apred) STAY
coll? [ALL-WITH-META p]
)))