CLJ-1318 - add support for destructuring namespaced keys

Signed-off-by: Stuart Halloway <stu@cognitect.com>

Author: puredanger

src/clj/clojure/core.clj

@@ -4040,7 +4040,8 @@
                                                (dissoc bes (key entry))
                                                ((key entry) bes)))
                                      (dissoc b :as :or)
-                                     {:keys #(keyword (str %)), :strs str, :syms #(list `quote %)})]
+                                     {:keys #(if (keyword? %) % (keyword (str %))),
+                                      :strs str, :syms #(list `quote %)})]
                            (if (seq bes)
                              (let [bb (key (first bes))
                                    bk (val (first bes))
@@ -4051,14 +4052,17 @@
                                       (next bes)))
                              ret))))]
                  (cond
-                  (symbol? b) (-> bvec (conj b) (conj v))
+                  (symbol? b) (-> bvec (conj (if (namespace b) (symbol (name b)) b)) (conj v))
+                  (keyword? b) (-> bvec (conj (symbol (name b))) (conj v))
                   (vector? b) (pvec bvec b v)
                   (map? b) (pmap bvec b v)
                   :else (throw (new Exception (str "Unsupported binding form: " b))))))
         process-entry (fn [bvec b] (pb bvec (first b) (second b)))]
     (if (every? symbol? (map first bents))
       bindings
-      (reduce1 process-entry [] bents))))
+      (if-let [kwbs (seq (filter #(keyword? (first %)) bents))]
+        (throw (new Exception (str "Unsupported binding key: " (ffirst kwbs))))
+        (reduce1 process-entry [] bents)))))
 
 (defmacro let
   "binding => binding-form init-expr

test/clojure/test_clojure/special.clj

@@ -31,3 +31,35 @@
 (deftest empty-list-with-:as-destructuring
   (let [{:as x} '()]
     (is (= {} x))))
+
+(deftest keywords-in-destructuring
+  (let [{:keys [:a :b]} {:a 1 :b 2}]
+    (is (= 1 a))
+    (is (= 2 b))))
+
+(deftest namespaced-keywords-in-destructuring
+  (let [{:keys [:a/b :c/d]} {:a/b 1 :c/d 2}]
+    (is (= 1 b))
+    (is (= 2 d))))
+
+(deftest namespaced-keys-in-destructuring
+  (let [{:keys [a/b c/d]} {:a/b 1 :c/d 2}]
+    (is (= 1 b))
+    (is (= 2 d))))
+
+(deftest namespaced-syms-in-destructuring
+  (let [{:syms [a/b c/d]} {'a/b 1 'c/d 2}]
+    (is (= 1 b))
+    (is (= 2 d))))
+
+(deftest keywords-not-allowed-in-let-bindings
+  (is (thrown-with-msg? Exception #"Unsupported binding key: :a"
+                        (eval '(let [:a 1] a))))
+  (is (thrown-with-msg? Exception #"Unsupported binding key: :a/b"
+                        (eval '(let [:a/b 1] b)))))
+
+(require '[clojure.string :as s])
+(deftest resolve-keyword-ns-alias-in-destructuring
+  (let [{:keys [::s/x ::s/y]} {:clojure.string/x 1 :clojure.string/y 2}]
+    (is (= x 1))
+    (is (= y 2))))