[jira] [Comment Edited] (GROOVY-8499) Glitch with native lambda support when supplied with incorrect arity lambda

["Paul King (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-8499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16390571#comment-16390571 ] 

Paul King edited comment on GROOVY-8499 at 3/8/18 2:05 AM:
-----------------------------------------------------------

Yes, of course. But we need a better error message in that case. I changed the description to better reflect the error.


was (Author: paulk):
Yes, of course. But we need a better error message in that case.

> Glitch with native lambda support when supplied with incorrect arity lambda
> ---------------------------------------------------------------------------
>
>                 Key: GROOVY-8499
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8499
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 3.x
>            Reporter: Paul King
>            Assignee: Paul King
>            Priority: Major
>
> The following code works:
> {code}
> import groovy.transform.*
> @CompileStatic
> def method() {
>   ['ab'.chars, '12'.chars].combinations().stream().collect((x, y) -> "$x$y").forEach{ println it }
> }
> method()
> {code}
> but if I make an error like this:
> {code}
> import groovy.transform.*
> @CompileStatic
> def method() {
>   ['ab'.chars, '12'.chars].combinations().stream().map((x, y) -> "$x$y").forEach{ println it }
> }
> method()
> {code}
> I get the following error:
> {noformat}
> Exception thrown
> java.lang.BootstrapMethodError: call site initialization exception
> 	at java.lang.invoke.CallSite.makeSite(CallSite.java:341)
> 	at java.lang.invoke.MethodHandleNatives.linkCallSiteImpl(MethodHandleNatives.java:307)
> 	at java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:297)
> 	at ConsoleScript33.method(ConsoleScript33:5)
> 	at ConsoleScript33.run(ConsoleScript33:9)
> 	at groovy.lang.GroovyShell.runScriptOrMainOrTestOrRunnable(GroovyShell.java:265)
> 	at groovy.lang.GroovyShell.run(GroovyShell.java:378)
> 	at groovy.lang.GroovyShell.run(GroovyShell.java:357)
> 	at groovy.lang.GroovyShell.run(GroovyShell.java:173)
> 	at groovy.lang.GroovyShell$run$0.call(Unknown Source)
> 	at groovy.ui.Console$_runScriptImpl_closure18.doCall(Console.groovy:1118)
> 	at groovy.ui.Console$_runScriptImpl_closure18.doCall(Console.groovy)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:103)
> 	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
> 	at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:264)
> 	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1037)
> 	at groovy.lang.Closure.call(Closure.java:419)
> 	at groovy.lang.Closure.call(Closure.java:413)
> 	at groovy.lang.Closure.run(Closure.java:500)
> 	at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.invoke.LambdaConversionException: Incorrect number of parameters for instance method invokeVirtual ConsoleScript33$_method_lambda1.doCall:(ConsoleScript33,Object,Object)Object; 2 captured parameters, 1 functional interface method parameters, 3 implementation parameters
> 	at java.lang.invoke.AbstractValidatingLambdaMetafactory.validateMetafactoryArgs(AbstractValidatingLambdaMetafactory.java:193)
> 	at java.lang.invoke.LambdaMetafactory.metafactory(LambdaMetafactory.java:303)
> 	at java.lang.invoke.CallSite.makeSite(CallSite.java:302)
> 	... 23 more
> {noformat}
> We should produce a sensible error message in this case.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)