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Posted to dev@tapestry.apache.org by "Jochen Kemnade (JIRA)" <ji...@apache.org> on 2013/12/03 15:51:37 UTC
[jira] [Updated] (TAP5-2248) ClojureBuilder should support bridging
varargs methods
[ https://issues.apache.org/jira/browse/TAP5-2248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jochen Kemnade updated TAP5-2248:
---------------------------------
Description:
ClojureBuilder fails to bridge varargs methods to Clojure functions, e.g.
@FunctionName("clojure.core/+")
Number plus(Number ... numbers);
Invoking the method leads to
java.lang.ClassCastException: Cannot cast [Ljava.lang.Number; to java.lang.Number
at java.lang.Class.cast(Class.java:3084)
at clojure.core$cast.invoke(core.clj:325)
at clojure.core$_PLUS_.invoke(core.clj:943)
at clojure.lang.Var.invoke(Var.java:415)
at org.apache.tapestry5.clojure.tests.ClojureBuilderSpec.invoke a method with a variable number of arguments(ClojureBuilderSpec.groovy:50)
We could check java.lang.reflect.Method.isVarArgs() and "unwrap" the last parameter array or some mixture of clojure.lang.IFn.applyTo(ISeq) and clojure.core/conj for the invocation.
was:
ClojureBuilder fails to bridge varargs methods to Clojure functions, e.g.
{code}
@FunctionName("clojure.core/+")
Number plus(Number ... numbers);
{code}
Invoking the method leads to
{code}
java.lang.ClassCastException: Cannot cast [Ljava.lang.Number; to java.lang.Number
at java.lang.Class.cast(Class.java:3084)
at clojure.core$cast.invoke(core.clj:325)
at clojure.core$_PLUS_.invoke(core.clj:943)
at clojure.lang.Var.invoke(Var.java:415)
at org.apache.tapestry5.clojure.tests.ClojureBuilderSpec.invoke a method with a variable number of arguments(ClojureBuilderSpec.groovy:50)
{code}
We could check {code}java.lang.reflect.Method.isVarArgs(){code} and "unwrap" the last parameter array or some mixture of {code}clojure.lang.IFn.applyTo(ISeq){code} and {code}clojure.core/conj{code} for the invocation.
> ClojureBuilder should support bridging varargs methods
> ------------------------------------------------------
>
> Key: TAP5-2248
> URL: https://issues.apache.org/jira/browse/TAP5-2248
> Project: Tapestry 5
> Issue Type: Improvement
> Components: tapestry-clojure
> Affects Versions: 5.4
> Reporter: Jochen Kemnade
>
> ClojureBuilder fails to bridge varargs methods to Clojure functions, e.g.
> @FunctionName("clojure.core/+")
> Number plus(Number ... numbers);
> Invoking the method leads to
> java.lang.ClassCastException: Cannot cast [Ljava.lang.Number; to java.lang.Number
> at java.lang.Class.cast(Class.java:3084)
> at clojure.core$cast.invoke(core.clj:325)
> at clojure.core$_PLUS_.invoke(core.clj:943)
> at clojure.lang.Var.invoke(Var.java:415)
> at org.apache.tapestry5.clojure.tests.ClojureBuilderSpec.invoke a method with a variable number of arguments(ClojureBuilderSpec.groovy:50)
> We could check java.lang.reflect.Method.isVarArgs() and "unwrap" the last parameter array or some mixture of clojure.lang.IFn.applyTo(ISeq) and clojure.core/conj for the invocation.
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