zca*_*ate 4 clojure clojurescript
在clojurescript库中我可以访问一个函数来编译clojure的片段到js?
我需要这个在clojure(而不是clojurescript)repl中运行:
(->js '(fn [x y] (+ x y)))
=> "function(x,y){return x+y}"
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(require '[cljs.analyzer.api :refer [analyze empty-env]])
(require '[cljs.compiler.api :refer [emit]])
(let [ast (analyze (empty-env) '(defn plus [a b] (+ a b)))]
(emit ast))
;; result
"cljs.user.plus = (function cljs$user$plus(a,b){\nreturn (a + b);\n});\n"
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(require '[cljs.js :refer [empty-state compile-str]])
(compile-str (empty-state) "(defn add [x y] (+ x y))" #(println (:value %)))
;; Output (manually formatted for easier reading)
cljs.user.add = (function cljs$user$add(x,y){
return (x + y);
});
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compile-str将回调作为最后一个参数.它将使用带有:value包含结果JS作为字符串的键或:error带有编译错误的键来调用.
在这两种情况下org.clojure/tools.reader都需要在类路径上.