Created
February 8, 2021 17:57
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(ns com.manigfeald.http2.cont) | |
(defn bind% [m f] | |
(fn [kont bundle] | |
(m (fn [value] ((f value) kont bundle)) bundle))) | |
(defmacro return% [value] | |
`(fn [kont# bundle#] | |
((try | |
(let [v# ~value] | |
#(kont# v#)) | |
(catch Throwable t# | |
(prn t#) | |
(if (:handler bundle#) | |
#((:handler bundle#) t#) | |
#(throw t#))))))) | |
(defmacro let-cont% [bindings & body] | |
(assert (even? (count bindings))) | |
(if (seq bindings) | |
(let [[n v & bindings] bindings] | |
`(bind% ~v (fn ~'g [~n] (let-cont% [~@bindings] ~@body)))) | |
`(do ~@body))) | |
(defn try% [action handler] | |
(fn [kont bundle] | |
(action kont (assoc bundle :handler (fn [t] ((handler t) kont bundle)))))) | |
(def call-with-cc% identity) | |
(defn label% [] | |
(fn here [kont bundle] | |
(kont | |
(fn [] | |
(fn [_ _] | |
(here kont bundle)))))) | |
(defn goto% [label] (label)) | |
(defn loop% [v] | |
(partial (fn here [v kont bundle] | |
(kont | |
[v | |
(fn [v] | |
(fn [_ _] | |
(here v kont bundle)))])) | |
v)) | |
(defn recur% [label v] (label v)) | |
(defn -loop% [& v] | |
(partial (fn here [v kont bundle] | |
(kont | |
(cons (fn [v] | |
(fn [_ _] | |
(here v kont bundle))) | |
v))) | |
v)) | |
(defn -recur% [label & v] (label v)) |
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