http://dev.clojure.org/jira This file is an XML representation of an issue en-us 4.4 649 25-07-2011 http://dev.clojure.org/jira/browse/CLJS-429 ClojureScript <p>equivalent of <a href="http://dev.clojure.org/jira/browse/CLJ-733">http://dev.clojure.org/jira/browse/CLJ-733</a></p> <p>as per <a href="https://groups.google.com/d/topic/clojure/vlTR_161WNc/discussion">https://groups.google.com/d/topic/clojure/vlTR_161WNc/discussion</a></p> <p>see also:</p> <p><a href="https://github.com/clojure/clojure/blob/d0c380d9809fd242bec688c7134e900f0bbedcac/src/clj/clojure/core.clj#L4227">https://github.com/clojure/clojure/blob/d0c380d9809fd242bec688c7134e900f0bbedcac/src/clj/clojure/core.clj#L4227</a></p> <p><a href="http://dev.clojure.org/display/design/Error+Handling">http://dev.clojure.org/display/design/Error+Handling</a></p> CLJS-429

Data Conveying Exception: ex-data and ex-info

Enhancement Minor Resolved Completed Michał Marczyk Dave Sann Mon, 26 Nov 2012 05:24:41 -0600 Thu, 6 Dec 2012 10:18:43 -0600 Thu, 6 Dec 2012 10:18:43 -0600 0 0 <p>The attached patch introduces ex-info, ex-data and ExceptionInfo to cljs.core. ExceptionInfo has its prototype set to Error.prototype (apparently necessary for good behaviour across browsers; this is marked as a special case in a comment).</p> <p>The version of ex-info introduced by the patch does support a cause argument, but I have to say that it's not clear to me how user code should go about extracting it. Direct property access feels icky; a new fn would be possible, but should perhaps be shared with Clojure; Clojure code would say (.getCause ex), but hanging a method on ExceptionInfo somehow feels icky to me too. My first cut at the patch actually did not include the cause field in ExceptionInfo and the ternary variant of ex-info; that could actually be a reasonable approach for now, especially if introducing a new fn might be a possibility (since that would presumably require coordination with Clojure).</p> <p>An improved patch. Firstly, it correctly makes ExceptionInfo into a custom error type (the original patch was broken on this point). Secondly, it introduces ex-message and ex-cause for dealing with ExceptionInfo in a platform-agnostic manner (got the go-ahead from Rich @ ClojureX; I'll be submitting a patch for this to Clojure).</p> <p>Clojure patch @ <a href="http://dev.clojure.org/jira/browse/CLJ-1120" title="Introduce ex-message and ex-cause to abstract away the platform in dealing with ExceptionInfo">CLJ-1120</a>.</p> <p>fixed, <a href="http://github.com/clojure/clojurescript/commit/7ccb67e040d32b2c0112d2c73dd2e28d5e13c50a">http://github.com/clojure/clojurescript/commit/7ccb67e040d32b2c0112d2c73dd2e28d5e13c50a</a></p> Global Rank