(match/match [a b]
            [_ true] :first
            [true false] :second
            [_ false] :third)

(try
 (cond
  (= b true) :first
  (= b false) (try
               (cond
                (= a true) :second
                :else (throw match/backtrack))
               (catch Exception e__23778__auto__
                (if
                 (identical? e__23778__auto__ match/backtrack)
                 (do (throw match/backtrack))
                 (throw e__23778__auto__))))
  :else (throw match/backtrack))
 (catch Exception e__23778__auto__
  (if
   (identical? e__23778__auto__ match/backtrack)
   (do
    (try
     (cond
      (= b false) :third
      :else (throw match/backtrack))
     (catch Exception e__23778__auto__
      (if
       (identical? e__23778__auto__ match/backtrack)
       (do
        (throw
         (java.lang.IllegalArgumentException.
          (str "No matching clause: " a " " b))))
       (throw e__23778__auto__)))))
   (throw e__23778__auto__))))