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December 27, 2019 15:24
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| package co.blocke.reflect | |
| import scala.tasty.file._ | |
| import scala.tasty.Reflection | |
| object Main extends App { | |
| val p = Person("Fred", 53) | |
| ReflectClass.showInfo(p) | |
| } | |
| case class Person(name:String, age:Int) | |
| object ReflectClass { | |
| def showInfo[T](instance: T): Unit = { | |
| val consumer = new Consumer() | |
| ConsumeTasty(".", List("co.blocke.reflect.Person"), consumer) | |
| } | |
| } | |
| class Consumer extends TastyConsumer { | |
| final def apply(reflect: Reflection)(root: reflect.Tree): Unit = { | |
| import reflect._ | |
| // Do something with the tree | |
| println("HERE!") | |
| } | |
| } | |
| /* When run, this produces this exception: | |
| [info] running co.blocke.reflect.Main | |
| cannot take signature of (): Object | |
| java.lang.ClassCastException: class dotty.tools.dotc.core.Symbols$NoSymbol$ cannot be cast to class dotty.tools.dotc.core.Symbols$ClassSymbol (dotty.tools.dotc.core.Symbols$NoSymbol$ and dotty.tools.dotc.core.Symbols$ClassSymbol are in unnamed module of loader sbt.internal.LayeredClassLoader @6a67569d) while compiling co.blocke.reflect.Person | |
| [error] (run-main-2) java.lang.ExceptionInInitializerError | |
| [error] java.lang.ExceptionInInitializerError | |
| [error] at co.blocke.reflect.Main.main(ReflectClass.scala) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) | |
| [error] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | |
| [error] at java.base/java.lang.reflect.Method.invoke(Method.java:567) | |
| [error] Caused by: java.lang.reflect.InvocationTargetException | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) | |
| [error] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | |
| [error] at java.base/java.lang.reflect.Method.invoke(Method.java:567) | |
| [error] at scala.tasty.file.ConsumeTasty$.apply(ConsumeTasty.scala:16) | |
| [error] at co.blocke.reflect.ReflectClass$.showInfo(ReflectClass.scala:19) | |
| [error] at co.blocke.reflect.Main$.<init>(ReflectClass.scala:10) | |
| [error] at co.blocke.reflect.Main$.<clinit>(ReflectClass.scala) | |
| [error] at co.blocke.reflect.Main.main(ReflectClass.scala) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) | |
| [error] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | |
| [error] at java.base/java.lang.reflect.Method.invoke(Method.java:567) | |
| [error] Caused by: java.lang.ClassCastException: class dotty.tools.dotc.core.Symbols$NoSymbol$ cannot be cast to class dotty.tools.dotc.core.Symbols$ClassSymbol (dotty.tools.dotc.core.Symbols$NoSymbol$ and dotty.tools.dotc.core.Symbols$ClassSymbol are in unnamed module of loader sbt.internal.LayeredClassLoader @6a67569d) | |
| [error] at dotty.tools.dotc.core.Symbols$Symbol.asClass(Symbols.scala:539) | |
| [error] at dotty.tools.dotc.core.Definitions.UnitClass(Definitions.scala:453) | |
| [error] at dotty.tools.dotc.core.Types$MethodicType.resultSignature(Types.scala:3006) | |
| [error] at dotty.tools.dotc.core.Types$MethodOrPoly.resultSignature(Types.scala:3147) | |
| [error] at dotty.tools.dotc.core.Types$MethodType.computeSignature(Types.scala:3306) | |
| [error] at dotty.tools.dotc.core.Types$SignatureCachingType.signature(Types.scala:2995) | |
| [error] at dotty.tools.dotc.core.Types$MethodOrPoly.signature(Types.scala:3147) | |
| [error] at dotty.tools.dotc.core.Denotations$SingleDenotation.signature(Denotations.scala:739) | |
| [error] at dotty.tools.dotc.core.Denotations$SingleDenotation.atSignature(Denotations.scala:771) | |
| [error] at dotty.tools.dotc.core.Denotations$SingleDenotation.atSignature(Denotations.scala:769) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler.dotty$tools$dotc$core$tasty$TreeUnpickler$TreeReader$$_$accessibleDenot$1(TreeUnpickler.scala:1044) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.completeSelect$1(TreeUnpickler.scala:1026) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.readSimpleTerm$1(TreeUnpickler.scala:1058) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.readTerm(TreeUnpickler.scala:1212) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.readLengthTerm$1(TreeUnpickler.scala:1090) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.readTerm(TreeUnpickler.scala:1212) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.$anonfun$3(TreeUnpickler.scala:889) | |
| [error] at dotty.tools.tasty.TastyReader.collectWhile(TastyReader.scala:137) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.readTemplate(TreeUnpickler.scala:892) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.readNewDef(TreeUnpickler.scala:818) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$TreeReader.readIndexedDef(TreeUnpickler.scala:743) | |
| [error] at dotty.tools.dotc.core.tasty.TreeUnpickler$Completer.complete(TreeUnpickler.scala:119) | |
| [error] at dotty.tools.dotc.core.SymDenotations$SymDenotation.completeFrom(SymDenotations.scala:258) | |
| [error] at dotty.tools.dotc.core.Denotations$Denotation.completeInfo$1(Denotations.scala:185) | |
| [error] at dotty.tools.dotc.core.Denotations$Denotation.info(Denotations.scala:187) | |
| [error] at dotty.tools.dotc.core.SymDenotations$SymDenotation.ensureCompleted(SymDenotations.scala:398) | |
| [error] at dotty.tools.dotc.core.Symbols$ClassSymbol.rootTreeContaining(Symbols.scala:751) | |
| [error] at dotty.tools.dotc.core.Symbols$ClassSymbol.rootTree(Symbols.scala:742) | |
| [error] at dotty.tools.dotc.fromtasty.ReadTasty.compilationUnit$1(ReadTasty.scala:44) | |
| [error] at dotty.tools.dotc.fromtasty.ReadTasty.readTASTY(ReadTasty.scala:71) | |
| [error] at dotty.tools.dotc.fromtasty.ReadTasty.runOn$$anonfun$1(ReadTasty.scala:24) | |
| [error] at scala.collection.immutable.List.flatMap(List.scala:265) | |
| [error] at dotty.tools.dotc.fromtasty.ReadTasty.runOn(ReadTasty.scala:24) | |
| [error] at dotty.tools.dotc.Run.runPhases$4$$anonfun$4(Run.scala:161) | |
| [error] at dotty.runtime.function.JProcedure1.apply(JProcedure1.java:15) | |
| [error] at dotty.runtime.function.JProcedure1.apply(JProcedure1.java:10) | |
| [error] at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323) | |
| [error] at dotty.tools.dotc.Run.runPhases$5(Run.scala:171) | |
| [error] at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:179) | |
| [error] at dotty.runtime.function.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12) | |
| [error] at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:65) | |
| [error] at dotty.tools.dotc.Run.compileUnits(Run.scala:186) | |
| [error] at dotty.tools.dotc.Run.compileUnits(Run.scala:128) | |
| [error] at dotty.tools.dotc.fromtasty.TASTYRun.compile(TASTYRun.scala:10) | |
| [error] at dotty.tools.dotc.Driver.doCompile(Driver.scala:36) | |
| [error] at dotty.tools.dotc.Driver.process(Driver.scala:189) | |
| [error] at dotty.tools.dotc.Driver.process(Driver.scala:158) | |
| [error] at dotty.tools.dotc.Driver.process(Driver.scala:170) | |
| [error] at dotty.tools.dotc.consumetasty.ConsumeTasty$.apply(ConsumeTasty.scala:24) | |
| [error] at dotty.tools.dotc.consumetasty.ConsumeTasty.apply(ConsumeTasty.scala) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) | |
| [error] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | |
| [error] at java.base/java.lang.reflect.Method.invoke(Method.java:567) | |
| [error] at scala.tasty.file.ConsumeTasty$.apply(ConsumeTasty.scala:16) | |
| [error] at co.blocke.reflect.ReflectClass$.showInfo(ReflectClass.scala:19) | |
| [error] at co.blocke.reflect.Main$.<init>(ReflectClass.scala:10) | |
| [error] at co.blocke.reflect.Main$.<clinit>(ReflectClass.scala) | |
| [error] at co.blocke.reflect.Main.main(ReflectClass.scala) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | |
| [error] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) | |
| [error] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | |
| [error] at java.base/java.lang.reflect.Method.invoke(Method.java:567) | |
| [error] stack trace is suppressed; run last Compile / bgRun for the full output | |
| */ |
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