[jackpot] Declarative rules don't match lambdas

[mbien]

migrated issue from NETBEANS-6025. Still reproducible in NB 15.

The first rule works. The second rule never captures anything, the third causes a class cast exception.

$stream.mapToObj($lambda) :: $stream instanceof java.util.stream.IntStream =>
$stream.boxed()
;;

$stream.mapToObj($x -> $x) :: $stream instanceof java.util.stream.IntStream =>
$stream.boxed()
;;

$stream.mapToObj(($x) -> $x) :: $stream instanceof java.util.stream.IntStream =>
$stream.boxed()
;;

// test snippet:
IntStream.of(1,2,3).mapToObj(x -> x);

exception of third rule:

java.lang.ClassCastException: class org.netbeans.modules.java.hints.spiimpl.JackpotTrees$VariableDeclWildcard cannot be cast to class com.sun.tools.javac.tree.JCTree$JCIdent (org.netbeans.modules.java.hints.spiimpl.JackpotTrees$VariableDeclWildcard is in unnamed module of loader org.netbeans.StandardModule$OneModuleClassLoader @24b6d0a8; com.sun.tools.javac.tree.JCTree$JCIdent is in unnamed module of loader org.netbeans.StandardModule$OneModuleClassLoader @68b9c85e)
	at com.sun.tools.javac.tree.TreeCopier.visitIdentifier(TreeCopier.java:244)
	at com.sun.tools.javac.tree.TreeCopier.visitIdentifier(TreeCopier.java:44)
	at org.netbeans.modules.java.hints.spiimpl.JackpotTrees$VariableDeclWildcard.accept(JackpotTrees.java:80)
	at com.sun.tools.javac.tree.TreeCopier.copy(TreeCopier.java:60)
	at com.sun.tools.javac.tree.TreeCopier.copy(TreeCopier.java:72)
	at com.sun.tools.javac.tree.TreeCopier.visitBlock(TreeCopier.java:135)
	at com.sun.tools.javac.tree.TreeCopier.visitBlock(TreeCopier.java:44)
	at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1094)
	at com.sun.tools.javac.tree.TreeCopier.copy(TreeCopier.java:60)
	at com.sun.tools.javac.tree.TreeCopier.copy(TreeCopier.java:53)
	at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:479)
	at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:467)
	at com.sun.tools.javac.comp.DeferredAttr.attribSpeculativeLambda(DeferredAttr.java:442)
	at com.sun.tools.javac.comp.ArgumentAttr.lambda$visitLambda$4(ArgumentAttr.java:301)
	at com.sun.tools.javac.comp.ArgumentAttr.processArg(ArgumentAttr.java:242)
	at com.sun.tools.javac.comp.ArgumentAttr.visitLambda(ArgumentAttr.java:299)
	at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1976)
	at com.sun.tools.javac.comp.ArgumentAttr.attribArg(ArgumentAttr.java:197)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:685)
	at com.sun.tools.javac.comp.Attr.attribArgs(Attr.java:788)
	at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:2584)
	at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1799)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:687)
	at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:733)
	at org.netbeans.modules.java.hints.spiimpl.Utilities.attributeTree(Utilities.java:648)
	at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:427)
	at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:341)
	at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:321)
	at org.netbeans.modules.java.hints.spiimpl.Utilities.parseAndAttribute(Utilities.java:317)
	at org.netbeans.modules.java.hints.spiimpl.pm.PatternCompiler.compile(PatternCompiler.java:44)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.doComputeHints(HintsInvoker.java:534)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHintsImpl(HintsInvoker.java:282)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:227)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:192)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:165)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:127)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:113)
	at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:63)
[catch] at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:273)
	at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:561)
	at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:786)
	at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
	at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:702)
	at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:663)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
	at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
	at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)