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;; Copyright (c) Stephen C. Gilardi. All rights reserved. The use and
;; distribution terms for this software are covered by the Eclipse Public
;; License 1.0 (http://opensource.org/licenses/eclipse-1.0.php) which can
;; be found in the file epl-v10.html at the root of this distribution. By
;; using this software in any fashion, you are agreeing to be bound by the
;; terms of this license. You must not remove this notice, or any other,
;; from this software.
;;
;; Condition.clj
;;
;; Used by clojure.contrib.condition to implement a "Throwable map"
;;
;; scgilardi (gmail)
;; Created 09 June 2009
(ns clojure.contrib.condition.Condition
(:gen-class :extends Throwable
:implements [clojure.lang.IMeta]
:state state
:init init
:post-init post-init
:constructors {[clojure.lang.IPersistentMap]
[String Throwable]}))
(defn -init
"Constructs a Condition object with condition (a map) as its
metadata. Also initializes the superclass with the values at :message
and :cause, if any, so they are also available via .getMessage and
.getCause."
[condition]
[[(:message condition) (:cause condition)] (atom condition)])
(defn -post-init
"Adds :stack-trace to the condition. Drops the bottom 3 frames because
they are always the same: implementation details of Condition and raise."
[this condition]
(swap! (.state this) assoc
:stack-trace (into-array (drop 3 (.getStackTrace this)))))
(defn -meta
"Returns this object's metadata, the condition"
[this]
@(.state this))
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