Paul King created GROOVY-8499:
---------------------------------
Summary: Glitch with native lambda support
Key: GROOVY-8499
URL: https://issues.apache.org/jira/browse/GROOVY-8499
Project: Groovy
Issue Type: Bug
Affects Versions: 3.x
Reporter: Paul King
The following code works:
{code}
import groovy.transform.*
@CompileStatic
def method() {
['ab'.chars, '12'.chars].combinations().collect{x, y -> "$x$y"}.each{ println
it }
}
method()
{code}
but the lambda equivalent doesn't:
{code}
import groovy.transform.*
@CompileStatic
def method() {
['ab'.chars, '12'.chars].combinations().stream().map((x, y) ->
"$x$y").forEach{ println it }
}
method()
{code}
giving the following error:
{noformat}
{color:red}Exception thrown{color}
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}
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