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11
.gitignore
vendored
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11
.gitignore
vendored
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||||||
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/target
|
||||||
|
/classes
|
||||||
|
/checkouts
|
||||||
|
pom.xml
|
||||||
|
pom.xml.asc
|
||||||
|
*.jar
|
||||||
|
*.class
|
||||||
|
/.lein-*
|
||||||
|
/.nrepl-port
|
||||||
|
\#*\#
|
||||||
|
*~
|
214
LICENSE
Normal file
214
LICENSE
Normal file
|
@ -0,0 +1,214 @@
|
||||||
|
THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
|
||||||
|
LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM
|
||||||
|
CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
|
||||||
|
|
||||||
|
1. DEFINITIONS
|
||||||
|
|
||||||
|
"Contribution" means:
|
||||||
|
|
||||||
|
a) in the case of the initial Contributor, the initial code and
|
||||||
|
documentation distributed under this Agreement, and
|
||||||
|
|
||||||
|
b) in the case of each subsequent Contributor:
|
||||||
|
|
||||||
|
i) changes to the Program, and
|
||||||
|
|
||||||
|
ii) additions to the Program;
|
||||||
|
|
||||||
|
where such changes and/or additions to the Program originate from and are
|
||||||
|
distributed by that particular Contributor. A Contribution 'originates' from
|
||||||
|
a Contributor if it was added to the Program by such Contributor itself or
|
||||||
|
anyone acting on such Contributor's behalf. Contributions do not include
|
||||||
|
additions to the Program which: (i) are separate modules of software
|
||||||
|
distributed in conjunction with the Program under their own license
|
||||||
|
agreement, and (ii) are not derivative works of the Program.
|
||||||
|
|
||||||
|
"Contributor" means any person or entity that distributes the Program.
|
||||||
|
|
||||||
|
"Licensed Patents" mean patent claims licensable by a Contributor which are
|
||||||
|
necessarily infringed by the use or sale of its Contribution alone or when
|
||||||
|
combined with the Program.
|
||||||
|
|
||||||
|
"Program" means the Contributions distributed in accordance with this
|
||||||
|
Agreement.
|
||||||
|
|
||||||
|
"Recipient" means anyone who receives the Program under this Agreement,
|
||||||
|
including all Contributors.
|
||||||
|
|
||||||
|
2. GRANT OF RIGHTS
|
||||||
|
|
||||||
|
a) Subject to the terms of this Agreement, each Contributor hereby grants
|
||||||
|
Recipient a non-exclusive, worldwide, royalty-free copyright license to
|
||||||
|
reproduce, prepare derivative works of, publicly display, publicly perform,
|
||||||
|
distribute and sublicense the Contribution of such Contributor, if any, and
|
||||||
|
such derivative works, in source code and object code form.
|
||||||
|
|
||||||
|
b) Subject to the terms of this Agreement, each Contributor hereby grants
|
||||||
|
Recipient a non-exclusive, worldwide, royalty-free patent license under
|
||||||
|
Licensed Patents to make, use, sell, offer to sell, import and otherwise
|
||||||
|
transfer the Contribution of such Contributor, if any, in source code and
|
||||||
|
object code form. This patent license shall apply to the combination of the
|
||||||
|
Contribution and the Program if, at the time the Contribution is added by the
|
||||||
|
Contributor, such addition of the Contribution causes such combination to be
|
||||||
|
covered by the Licensed Patents. The patent license shall not apply to any
|
||||||
|
other combinations which include the Contribution. No hardware per se is
|
||||||
|
licensed hereunder.
|
||||||
|
|
||||||
|
c) Recipient understands that although each Contributor grants the licenses
|
||||||
|
to its Contributions set forth herein, no assurances are provided by any
|
||||||
|
Contributor that the Program does not infringe the patent or other
|
||||||
|
intellectual property rights of any other entity. Each Contributor disclaims
|
||||||
|
any liability to Recipient for claims brought by any other entity based on
|
||||||
|
infringement of intellectual property rights or otherwise. As a condition to
|
||||||
|
exercising the rights and licenses granted hereunder, each Recipient hereby
|
||||||
|
assumes sole responsibility to secure any other intellectual property rights
|
||||||
|
needed, if any. For example, if a third party patent license is required to
|
||||||
|
allow Recipient to distribute the Program, it is Recipient's responsibility
|
||||||
|
to acquire that license before distributing the Program.
|
||||||
|
|
||||||
|
d) Each Contributor represents that to its knowledge it has sufficient
|
||||||
|
copyright rights in its Contribution, if any, to grant the copyright license
|
||||||
|
set forth in this Agreement.
|
||||||
|
|
||||||
|
3. REQUIREMENTS
|
||||||
|
|
||||||
|
A Contributor may choose to distribute the Program in object code form under
|
||||||
|
its own license agreement, provided that:
|
||||||
|
|
||||||
|
a) it complies with the terms and conditions of this Agreement; and
|
||||||
|
|
||||||
|
b) its license agreement:
|
||||||
|
|
||||||
|
i) effectively disclaims on behalf of all Contributors all warranties and
|
||||||
|
conditions, express and implied, including warranties or conditions of title
|
||||||
|
and non-infringement, and implied warranties or conditions of merchantability
|
||||||
|
and fitness for a particular purpose;
|
||||||
|
|
||||||
|
ii) effectively excludes on behalf of all Contributors all liability for
|
||||||
|
damages, including direct, indirect, special, incidental and consequential
|
||||||
|
damages, such as lost profits;
|
||||||
|
|
||||||
|
iii) states that any provisions which differ from this Agreement are offered
|
||||||
|
by that Contributor alone and not by any other party; and
|
||||||
|
|
||||||
|
iv) states that source code for the Program is available from such
|
||||||
|
Contributor, and informs licensees how to obtain it in a reasonable manner on
|
||||||
|
or through a medium customarily used for software exchange.
|
||||||
|
|
||||||
|
When the Program is made available in source code form:
|
||||||
|
|
||||||
|
a) it must be made available under this Agreement; and
|
||||||
|
|
||||||
|
b) a copy of this Agreement must be included with each copy of the Program.
|
||||||
|
|
||||||
|
Contributors may not remove or alter any copyright notices contained within
|
||||||
|
the Program.
|
||||||
|
|
||||||
|
Each Contributor must identify itself as the originator of its Contribution,
|
||||||
|
if any, in a manner that reasonably allows subsequent Recipients to identify
|
||||||
|
the originator of the Contribution.
|
||||||
|
|
||||||
|
4. COMMERCIAL DISTRIBUTION
|
||||||
|
|
||||||
|
Commercial distributors of software may accept certain responsibilities with
|
||||||
|
respect to end users, business partners and the like. While this license is
|
||||||
|
intended to facilitate the commercial use of the Program, the Contributor who
|
||||||
|
includes the Program in a commercial product offering should do so in a
|
||||||
|
manner which does not create potential liability for other Contributors.
|
||||||
|
Therefore, if a Contributor includes the Program in a commercial product
|
||||||
|
offering, such Contributor ("Commercial Contributor") hereby agrees to defend
|
||||||
|
and indemnify every other Contributor ("Indemnified Contributor") against any
|
||||||
|
losses, damages and costs (collectively "Losses") arising from claims,
|
||||||
|
lawsuits and other legal actions brought by a third party against the
|
||||||
|
Indemnified Contributor to the extent caused by the acts or omissions of such
|
||||||
|
Commercial Contributor in connection with its distribution of the Program in
|
||||||
|
a commercial product offering. The obligations in this section do not apply
|
||||||
|
to any claims or Losses relating to any actual or alleged intellectual
|
||||||
|
property infringement. In order to qualify, an Indemnified Contributor must:
|
||||||
|
a) promptly notify the Commercial Contributor in writing of such claim, and
|
||||||
|
b) allow the Commercial Contributor tocontrol, and cooperate with the
|
||||||
|
Commercial Contributor in, the defense and any related settlement
|
||||||
|
negotiations. The Indemnified Contributor may participate in any such claim
|
||||||
|
at its own expense.
|
||||||
|
|
||||||
|
For example, a Contributor might include the Program in a commercial product
|
||||||
|
offering, Product X. That Contributor is then a Commercial Contributor. If
|
||||||
|
that Commercial Contributor then makes performance claims, or offers
|
||||||
|
warranties related to Product X, those performance claims and warranties are
|
||||||
|
such Commercial Contributor's responsibility alone. Under this section, the
|
||||||
|
Commercial Contributor would have to defend claims against the other
|
||||||
|
Contributors related to those performance claims and warranties, and if a
|
||||||
|
court requires any other Contributor to pay any damages as a result, the
|
||||||
|
Commercial Contributor must pay those damages.
|
||||||
|
|
||||||
|
5. NO WARRANTY
|
||||||
|
|
||||||
|
EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED ON
|
||||||
|
AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER
|
||||||
|
EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR
|
||||||
|
CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
|
||||||
|
PARTICULAR PURPOSE. Each Recipient is solely responsible for determining the
|
||||||
|
appropriateness of using and distributing the Program and assumes all risks
|
||||||
|
associated with its exercise of rights under this Agreement , including but
|
||||||
|
not limited to the risks and costs of program errors, compliance with
|
||||||
|
applicable laws, damage to or loss of data, programs or equipment, and
|
||||||
|
unavailability or interruption of operations.
|
||||||
|
|
||||||
|
6. DISCLAIMER OF LIABILITY
|
||||||
|
|
||||||
|
EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY
|
||||||
|
CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||||
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION
|
||||||
|
LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||||
|
ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE
|
||||||
|
EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY
|
||||||
|
OF SUCH DAMAGES.
|
||||||
|
|
||||||
|
7. GENERAL
|
||||||
|
|
||||||
|
If any provision of this Agreement is invalid or unenforceable under
|
||||||
|
applicable law, it shall not affect the validity or enforceability of the
|
||||||
|
remainder of the terms of this Agreement, and without further action by the
|
||||||
|
parties hereto, such provision shall be reformed to the minimum extent
|
||||||
|
necessary to make such provision valid and enforceable.
|
||||||
|
|
||||||
|
If Recipient institutes patent litigation against any entity (including a
|
||||||
|
cross-claim or counterclaim in a lawsuit) alleging that the Program itself
|
||||||
|
(excluding combinations of the Program with other software or hardware)
|
||||||
|
infringes such Recipient's patent(s), then such Recipient's rights granted
|
||||||
|
under Section 2(b) shall terminate as of the date such litigation is filed.
|
||||||
|
|
||||||
|
All Recipient's rights under this Agreement shall terminate if it fails to
|
||||||
|
comply with any of the material terms or conditions of this Agreement and
|
||||||
|
does not cure such failure in a reasonable period of time after becoming
|
||||||
|
aware of such noncompliance. If all Recipient's rights under this Agreement
|
||||||
|
terminate, Recipient agrees to cease use and distribution of the Program as
|
||||||
|
soon as reasonably practicable. However, Recipient's obligations under this
|
||||||
|
Agreement and any licenses granted by Recipient relating to the Program shall
|
||||||
|
continue and survive.
|
||||||
|
|
||||||
|
Everyone is permitted to copy and distribute copies of this Agreement, but in
|
||||||
|
order to avoid inconsistency the Agreement is copyrighted and may only be
|
||||||
|
modified in the following manner. The Agreement Steward reserves the right to
|
||||||
|
publish new versions (including revisions) of this Agreement from time to
|
||||||
|
time. No one other than the Agreement Steward has the right to modify this
|
||||||
|
Agreement. The Eclipse Foundation is the initial Agreement Steward. The
|
||||||
|
Eclipse Foundation may assign the responsibility to serve as the Agreement
|
||||||
|
Steward to a suitable separate entity. Each new version of the Agreement will
|
||||||
|
be given a distinguishing version number. The Program (including
|
||||||
|
Contributions) may always be distributed subject to the version of the
|
||||||
|
Agreement under which it was received. In addition, after a new version of
|
||||||
|
the Agreement is published, Contributor may elect to distribute the Program
|
||||||
|
(including its Contributions) under the new version. Except as expressly
|
||||||
|
stated in Sections 2(a) and 2(b) above, Recipient receives no rights or
|
||||||
|
licenses to the intellectual property of any Contributor under this
|
||||||
|
Agreement, whether expressly, by implication, estoppel or otherwise. All
|
||||||
|
rights in the Program not expressly granted under this Agreement are
|
||||||
|
reserved.
|
||||||
|
|
||||||
|
This Agreement is governed by the laws of the State of Washington and the
|
||||||
|
intellectual property laws of the United States of America. No party to this
|
||||||
|
Agreement will bring a legal action under this Agreement more than one year
|
||||||
|
after the cause of action arose. Each party waives its rights to a jury trial
|
||||||
|
in any resulting litigation.
|
14
README.md
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14
README.md
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|
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|
||||||
|
# freactive
|
||||||
|
|
||||||
|
A Clojure library designed to ... well, that part is up to you.
|
||||||
|
|
||||||
|
## Usage
|
||||||
|
|
||||||
|
FIXME
|
||||||
|
|
||||||
|
## License
|
||||||
|
|
||||||
|
Copyright © 2014 FIXME
|
||||||
|
|
||||||
|
Distributed under the Eclipse Public License either version 1.0 or (at
|
||||||
|
your option) any later version.
|
8
project.clj
Normal file
8
project.clj
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|
@ -0,0 +1,8 @@
|
||||||
|
(defproject freactive "0.1.0-SNAPSHOT"
|
||||||
|
:description "FIXME: write description"
|
||||||
|
:url "http://example.com/FIXME"
|
||||||
|
:license {:name "Eclipse Public License"
|
||||||
|
:url "http://www.eclipse.org/legal/epl-v10.html"}
|
||||||
|
:dependencies [[org.clojure/clojure "1.6.0"]]
|
||||||
|
:source-paths ["src/clojure"]
|
||||||
|
:java-source-paths ["src/java"])
|
167
src/clojure/freactive/core.clj
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167
src/clojure/freactive/core.clj
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|
@ -0,0 +1,167 @@
|
||||||
|
(ns freactive.core
|
||||||
|
(:refer-clojure
|
||||||
|
:exclude [atom agent ref swap! reset! compare-and-set!])
|
||||||
|
(:import [clojure.lang.ReactiveAtom])
|
||||||
|
(:require
|
||||||
|
[clojure.set]
|
||||||
|
[clojure.data]))
|
||||||
|
|
||||||
|
;; Copying clojure.core atom stuff here so that we can use my ReactiveAtom class.
|
||||||
|
|
||||||
|
(defn atom
|
||||||
|
"Creates and returns an Atom with an initial value of x and zero or
|
||||||
|
more options (in any order):
|
||||||
|
|
||||||
|
:meta metadata-map
|
||||||
|
|
||||||
|
:validator validate-fn
|
||||||
|
|
||||||
|
If metadata-map is supplied, it will become the metadata on the
|
||||||
|
atom. validate-fn must be nil or a side-effect-free fn of one
|
||||||
|
argument, which will be passed the intended new state on any state
|
||||||
|
change. If the new state is unacceptable, the validate-fn should
|
||||||
|
return false or throw an exception."
|
||||||
|
{:added "1.0"
|
||||||
|
:static true}
|
||||||
|
([x] (new clojure.lang.ReactiveAtom x))
|
||||||
|
([x & options] (#'clojure.core/setup-reference (atom x) options)))
|
||||||
|
|
||||||
|
(defn swap!
|
||||||
|
"Atomically swaps the value of atom to be:
|
||||||
|
(apply f current-value-of-atom args). Note that f may be called
|
||||||
|
multiple times, and thus should be free of side effects. Returns
|
||||||
|
the value that was swapped in."
|
||||||
|
{:added "1.0"
|
||||||
|
:static true}
|
||||||
|
([^clojure.lang.ReactiveAtom atom f] (.swap atom f))
|
||||||
|
([^clojure.lang.ReactiveAtom atom f x] (.swap atom f x))
|
||||||
|
([^clojure.lang.ReactiveAtom atom f x y] (.swap atom f x y))
|
||||||
|
([^clojure.lang.ReactiveAtom atom f x y & args] (.swap atom f x y args)))
|
||||||
|
|
||||||
|
(defn compare-and-set!
|
||||||
|
"Atomically sets the value of atom to newval if and only if the
|
||||||
|
current value of the atom is identical to oldval. Returns true if
|
||||||
|
set happened, else false"
|
||||||
|
{:added "1.0"
|
||||||
|
:static true}
|
||||||
|
[^clojure.lang.ReactiveAtom atom oldval newval] (.compareAndSet atom oldval newval))
|
||||||
|
|
||||||
|
(defn reset!
|
||||||
|
"Sets the value of atom to newval without regard for the
|
||||||
|
current value. Returns newval."
|
||||||
|
{:added "1.0"
|
||||||
|
:static true}
|
||||||
|
[^clojure.lang.ReactiveAtom atom newval] (.reset atom newval))
|
||||||
|
|
||||||
|
(def ^:dynamic *deps* nil)
|
||||||
|
(def ^:dynamic *register-dep* (constantly nil))
|
||||||
|
|
||||||
|
;; (defrecord Reactive [dirty value f deps sully-fn]
|
||||||
|
;; clojure.lang.IDeref
|
||||||
|
;; (deref [this]
|
||||||
|
;; (*register-dep* this)
|
||||||
|
;; (if-not @dirty
|
||||||
|
;; @value
|
||||||
|
;; (let [simple (:simple (meta f))]
|
||||||
|
;; (if (and simple @deps)
|
||||||
|
;; (binding [*register-dep* (constantly nil)]
|
||||||
|
;; (clojure.core/reset! value (f))
|
||||||
|
;; (clojure.core/reset! dirty false)
|
||||||
|
;; @value)
|
||||||
|
;; (binding [*deps* #{}
|
||||||
|
;; *register-dep* (fn [x] (set! *deps* (conj *deps* x)))]
|
||||||
|
;; (clojure.core/reset! value (f))
|
||||||
|
;; (clojure.core/reset! dirty false)
|
||||||
|
;; (let [removed (clojure.set/difference @deps *deps*)
|
||||||
|
;; added (clojure.set/difference *deps* @deps)]
|
||||||
|
;; (doseq [r removed]
|
||||||
|
;; (remove-watch r sully-fn))
|
||||||
|
;; (doseq [a added]
|
||||||
|
;; (add-watch a sully-fn sully-fn))
|
||||||
|
;; (clojure.core/reset! deps *deps*))
|
||||||
|
;; @value))))))
|
||||||
|
|
||||||
|
(defrecord ReactiveState [dirty value f deps sully-fn])
|
||||||
|
|
||||||
|
(defprotocol IReactive
|
||||||
|
(recompute! [this])
|
||||||
|
(rebind! [this f]))
|
||||||
|
|
||||||
|
(defrecord Reactive [data]
|
||||||
|
IReactive
|
||||||
|
(recompute! [this] (swap! data assoc :dirty true))
|
||||||
|
(rebind! [this f] (swap! data merge {:dirty true :f f :deps nil}))
|
||||||
|
clojure.lang.IDeref
|
||||||
|
(deref [this]
|
||||||
|
(*register-dep* this)
|
||||||
|
(let [^ReactiveState {:keys [dirty value]} @data]
|
||||||
|
(if-not dirty
|
||||||
|
value
|
||||||
|
(:value
|
||||||
|
(clojure.core/swap!
|
||||||
|
data
|
||||||
|
(fn recompute-fn [^ReactiveState {:keys [dirty value f deps sully-fn] :as state}]
|
||||||
|
(if-not dirty
|
||||||
|
state
|
||||||
|
(let [simple (:simple (meta f))]
|
||||||
|
(if (and simple deps)
|
||||||
|
(binding [*register-dep* (constantly nil)]
|
||||||
|
(merge state {:value (f) :dirty false}))
|
||||||
|
(binding [*deps* #{}
|
||||||
|
*register-dep* (fn [x] (set! *deps* (conj *deps* x)))]
|
||||||
|
(let [new-value (f)]
|
||||||
|
(let [removed (clojure.set/difference deps *deps*)
|
||||||
|
added (clojure.set/difference *deps* deps)]
|
||||||
|
(doseq [r removed]
|
||||||
|
(remove-watch r sully-fn))
|
||||||
|
(doseq [a added]
|
||||||
|
(add-watch a sully-fn sully-fn))
|
||||||
|
(merge state {:value new-value :dirty false :deps *deps*}))))))))))))))
|
||||||
|
|
||||||
|
(defmethod print-method Reactive [o ^java.io.Writer w]
|
||||||
|
(#'clojure.core/print-sequential (format "#<%s@%x%s: "
|
||||||
|
(.getSimpleName (class o))
|
||||||
|
(System/identityHashCode o)
|
||||||
|
"")
|
||||||
|
#'clojure.core/pr-on, "", ">", (list @o), w))
|
||||||
|
|
||||||
|
;; (defn reactive [f]
|
||||||
|
;; (let [dirty (clojure.core/atom true)]
|
||||||
|
;; (Reactive. dirty (clojure.core/atom nil) f (clojure.core/atom nil) (fn [& _] (clojure.core/reset! dirty true)))))
|
||||||
|
|
||||||
|
(defn reactive [f]
|
||||||
|
(let [data (clojure.core/atom nil)]
|
||||||
|
(clojure.core/reset!
|
||||||
|
data
|
||||||
|
(ReactiveState. true nil f nil
|
||||||
|
(fn sully-fn [& _]
|
||||||
|
(clojure.core/swap!
|
||||||
|
data
|
||||||
|
(fn do-sully [^ReactiveState state] (assoc state :dirty true))))))
|
||||||
|
(Reactive. data)))
|
||||||
|
|
||||||
|
(defn simple [f] (with-meta f (merge (meta f) {:simple true})))
|
||||||
|
|
||||||
|
(defn test1 []
|
||||||
|
(let [prev (apply hash-set (repeatedly 3 #(rand-int 7)))
|
||||||
|
cur (apply hash-set (repeatedly 3 #(rand-int 7)))]
|
||||||
|
(clojure.data/diff prev cur)))
|
||||||
|
|
||||||
|
(defn test2 []
|
||||||
|
(let [prev (apply hash-set (repeatedly 3 #(rand-int 7)))
|
||||||
|
cur (apply hash-set (repeatedly 3 #(rand-int 7)))]
|
||||||
|
(clojure.set/difference prev cur)
|
||||||
|
(clojure.set/difference cur prev)))
|
||||||
|
|
||||||
|
|
||||||
|
(defn test3 []
|
||||||
|
(let [a (atom 0)
|
||||||
|
b (atom 0)
|
||||||
|
c (reactive (fn [] (+ @a @b)))]
|
||||||
|
(time
|
||||||
|
(dotimes [i 100000]
|
||||||
|
(swap! a inc)
|
||||||
|
(swap! b inc)
|
||||||
|
@c))))
|
||||||
|
|
||||||
|
(test3)
|
113
src/java/clojure/lang/ReactiveAtom.java
Normal file
113
src/java/clojure/lang/ReactiveAtom.java
Normal file
|
@ -0,0 +1,113 @@
|
||||||
|
/**
|
||||||
|
* Copyright (c) Rich Hickey. 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.
|
||||||
|
**/
|
||||||
|
|
||||||
|
/* rich Jan 1, 2009 */
|
||||||
|
|
||||||
|
/* modified from clojure.lang.Java on Jul 10, 2014 by aaronc
|
||||||
|
I implemented this in clojure.lang because it is hard to
|
||||||
|
subclass ARef because validate has package protection
|
||||||
|
*/
|
||||||
|
|
||||||
|
package clojure.lang;
|
||||||
|
|
||||||
|
import java.util.concurrent.atomic.AtomicReference;
|
||||||
|
|
||||||
|
final public class ReactiveAtom extends ARef{
|
||||||
|
|
||||||
|
final AtomicReference state;
|
||||||
|
|
||||||
|
final static Var registerDep = Var.intern(Namespace.findOrCreate(Symbol.intern("freactive.core")), Symbol.intern("*register-dep*"), null, false).setDynamic();
|
||||||
|
|
||||||
|
public ReactiveAtom(Object state){
|
||||||
|
this.state = new AtomicReference(state);
|
||||||
|
}
|
||||||
|
|
||||||
|
public ReactiveAtom(Object state, IPersistentMap meta){
|
||||||
|
super(meta);
|
||||||
|
this.state = new AtomicReference(state);
|
||||||
|
}
|
||||||
|
|
||||||
|
public Object deref(){
|
||||||
|
registerDep.invoke(this);
|
||||||
|
return state.get();
|
||||||
|
}
|
||||||
|
|
||||||
|
public Object swap(IFn f) {
|
||||||
|
for(; ;)
|
||||||
|
{
|
||||||
|
Object v = deref();
|
||||||
|
Object newv = f.invoke(v);
|
||||||
|
validate(newv);
|
||||||
|
if(state.compareAndSet(v, newv))
|
||||||
|
{
|
||||||
|
notifyWatches(v, newv);
|
||||||
|
return newv;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public Object swap(IFn f, Object arg) {
|
||||||
|
for(; ;)
|
||||||
|
{
|
||||||
|
Object v = deref();
|
||||||
|
Object newv = f.invoke(v, arg);
|
||||||
|
validate(newv);
|
||||||
|
if(state.compareAndSet(v, newv))
|
||||||
|
{
|
||||||
|
notifyWatches(v, newv);
|
||||||
|
return newv;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public Object swap(IFn f, Object arg1, Object arg2) {
|
||||||
|
for(; ;)
|
||||||
|
{
|
||||||
|
Object v = deref();
|
||||||
|
Object newv = f.invoke(v, arg1, arg2);
|
||||||
|
validate(newv);
|
||||||
|
if(state.compareAndSet(v, newv))
|
||||||
|
{
|
||||||
|
notifyWatches(v, newv);
|
||||||
|
return newv;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public Object swap(IFn f, Object x, Object y, ISeq args) {
|
||||||
|
for(; ;)
|
||||||
|
{
|
||||||
|
Object v = deref();
|
||||||
|
Object newv = f.applyTo(RT.listStar(v, x, y, args));
|
||||||
|
validate(newv);
|
||||||
|
if(state.compareAndSet(v, newv))
|
||||||
|
{
|
||||||
|
notifyWatches(v, newv);
|
||||||
|
return newv;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
public boolean compareAndSet(Object oldv, Object newv){
|
||||||
|
validate(newv);
|
||||||
|
boolean ret = state.compareAndSet(oldv, newv);
|
||||||
|
if(ret)
|
||||||
|
notifyWatches(oldv, newv);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
public Object reset(Object newval){
|
||||||
|
Object oldval = state.get();
|
||||||
|
validate(newval);
|
||||||
|
state.set(newval);
|
||||||
|
notifyWatches(oldval, newval);
|
||||||
|
return newval;
|
||||||
|
}
|
||||||
|
}
|
7
test/freactive/core_test.clj
Normal file
7
test/freactive/core_test.clj
Normal file
|
@ -0,0 +1,7 @@
|
||||||
|
(ns freactive.core-test
|
||||||
|
(:require [clojure.test :refer :all]
|
||||||
|
[freactive.core :refer :all]))
|
||||||
|
|
||||||
|
(deftest a-test
|
||||||
|
(testing "FIXME, I fail."
|
||||||
|
(is (= 0 1))))
|
Loading…
Reference in a new issue