Hi, is this compile error intended? So is this mean "!!." will only work for instance variable only?
fun main(args: Array<String>) {
val p = System!!.getProperties()
println(p)
}
output>
EXCEPTION: java.lang.UnsupportedOperationException: Only member lookup is allowed on a namespace type System
at org.jetbrains.jet.lang.types.NamespaceType.throwException(NamespaceType.java:55)
at org.jetbrains.jet.lang.types.NamespaceType.isNullable(NamespaceType.java:67)
at org.jetbrains.jet.lang.types.TypeUtils.makeNullableAsSpecified(TypeUtils.java:91)
at org.jetbrains.jet.lang.types.TypeUtils.makeNotNullable(TypeUtils.java:86)
at org.jetbrains.jet.lang.types.checker.TypeCheckingProcedure.isSubtypeOf(TypeCheckingProcedure.java:165)
at org.jetbrains.jet.lang.types.checker.JetTypeChecker.isSubtypeOf(JetTypeChecker.java:38)
at org.jetbrains.jet.lang.types.TypeUtils.equalTypes(TypeUtils.java:457)
at org.jetbrains.jet.lang.resolve.calls.autocasts.DataFlowValueFactory.createDataFlowValue(DataFlowValueFactory.java:47)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.isKnownToBeNotNull(BasicExpressionTypingVisitor.java:1025)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitExclExclExpression(BasicExpressionTypingVisitor.java:996)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitUnaryExpression(BasicExpressionTypingVisitor.java:909)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitUnaryExpression(BasicExpressionTypingVisitor.java:892)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitUnaryExpression(BasicExpressionTypingVisitor.java:65)
at org.jetbrains.jet.lang.psi.JetVisitor.visitPostfixExpression(JetVisitor.java:177)
at org.jetbrains.jet.lang.psi.JetPostfixExpression.accept(JetPostfixExpression.java:44)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.visitJetElement(ExpressionTypingVisitorDispatcher.java:230)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.visitJetElement(ExpressionTypingVisitorDispatcher.java:37)
at org.jetbrains.jet.lang.psi.JetVisitor.visitExpression(JetVisitor.java:148)
at org.jetbrains.jet.lang.psi.JetVisitor.visitUnaryExpression(JetVisitor.java:181)
at org.jetbrains.jet.lang.psi.JetVisitor.visitPostfixExpression(JetVisitor.java:177)
at org.jetbrains.jet.lang.psi.JetPostfixExpression.accept(JetPostfixExpression.java:44)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:125)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:93)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitQualifiedExpression(BasicExpressionTypingVisitor.java:651)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitQualifiedExpression(BasicExpressionTypingVisitor.java:65)
at org.jetbrains.jet.lang.psi.JetVisitor.visitDotQualifiedExpression(JetVisitor.java:261)
at org.jetbrains.jet.lang.psi.JetDotQualifiedExpression.accept(JetDotQualifiedExpression.java:37)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.visitJetElement(ExpressionTypingVisitorDispatcher.java:230)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.visitJetElement(ExpressionTypingVisitorDispatcher.java:37)
at org.jetbrains.jet.lang.psi.JetVisitor.visitExpression(JetVisitor.java:148)
at org.jetbrains.jet.lang.psi.JetVisitor.visitQualifiedExpression(JetVisitor.java:253)
at org.jetbrains.jet.lang.psi.JetVisitor.visitDotQualifiedExpression(JetVisitor.java:261)
at org.jetbrains.jet.lang.psi.JetDotQualifiedExpression.accept(JetDotQualifiedExpression.java:37)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:125)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:93)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices.getTypeInfo(ExpressionTypingServices.java:125)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices.getType(ExpressionTypingServices.java:130)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices.safeGetType(ExpressionTypingServices.java:113)
at org.jetbrains.jet.lang.resolve.DescriptorResolver$2.compute(DescriptorResolver.java:994)
at org.jetbrains.jet.lang.resolve.DescriptorResolver$2.compute(DescriptorResolver.java:991)
at org.jetbrains.jet.util.lazy.LazyValue.get(LazyValue.java:48)
at org.jetbrains.jet.lang.resolve.DescriptorResolver.getVariableType(DescriptorResolver.java:1001)
at org.jetbrains.jet.lang.resolve.DescriptorResolver.resolveLocalVariableDescriptor(DescriptorResolver.java:754)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorForStatements.visitProperty(ExpressionTypingVisitorForStatements.java:110)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorForStatements.visitProperty(ExpressionTypingVisitorForStatements.java:50)
at org.jetbrains.jet.lang.psi.JetProperty.accept(JetProperty.java:60)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:125)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:100)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices.getBlockReturnedTypeWithWritableScope(ExpressionTypingServices.java:344)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices.getBlockReturnedType(ExpressionTypingServices.java:206)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitBlockExpression(BasicExpressionTypingVisitor.java:634)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitBlockExpression(BasicExpressionTypingVisitor.java:630)
at org.jetbrains.jet.lang.types.expressions.BasicExpressionTypingVisitor.visitBlockExpression(BasicExpressionTypingVisitor.java:65)
at org.jetbrains.jet.lang.psi.JetBlockExpression.accept(JetBlockExpression.java:50)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.visitJetElement(ExpressionTypingVisitorDispatcher.java:230)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.visitJetElement(ExpressionTypingVisitorDispatcher.java:37)
at org.jetbrains.jet.lang.psi.JetVisitor.visitExpression(JetVisitor.java:148)
at org.jetbrains.jet.lang.psi.JetVisitor.visitBlockExpression(JetVisitor.java:277)
at org.jetbrains.jet.lang.psi.JetBlockExpression.accept(JetBlockExpression.java:50)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:125)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:93)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingVisitorDispatcher.getTypeInfo(ExpressionTypingVisitorDispatcher.java:98)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices.checkFunctionReturnType(ExpressionTypingServices.java:181)
at org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices.checkFunctionReturnType(ExpressionTypingServices.java:159)
at org.jetbrains.jet.lang.resolve.BodyResolver.resolveFunctionBody(BodyResolver.java:513)
at org.jetbrains.jet.lang.resolve.BodyResolver.resolveFunctionBodies(BodyResolver.java:497)
at org.jetbrains.jet.lang.resolve.BodyResolver.resolveBehaviorDeclarationBodies(BodyResolver.java:131)
at org.jetbrains.jet.lang.resolve.BodyResolver.resolveBodies(BodyResolver.java:141)
at org.jetbrains.jet.lang.resolve.TopDownAnalyzer.doProcess(TopDownAnalyzer.java:134)
at org.jetbrains.jet.lang.resolve.TopDownAnalyzer.analyzeFiles(TopDownAnalyzer.java:259)
at org.jetbrains.jet.lang.resolve.java.AnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration(AnalyzerFacadeForJVM.java:204)
at org.jetbrains.jet.lang.resolve.java.AnalyzerFacadeForJVM.analyzeFilesWithJavaIntegration(AnalyzerFacadeForJVM.java:186)
at org.jetbrains.jet.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$1.invoke(KotlinToJVMBytecodeCompiler.java:317)
at org.jetbrains.jet.cli.jvm.compiler.KotlinToJVMBytecodeCompiler$1.invoke(KotlinToJVMBytecodeCompiler.java:313)
at org.jetbrains.jet.cli.common.messages.AnalyzerWithCompilerReport.analyzeAndReport(AnalyzerWithCompilerReport.java:212)
at org.jetbrains.jet.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.analyze(KotlinToJVMBytecodeCompiler.java:312)
at org.jetbrains.jet.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.analyzeAndGenerate(KotlinToJVMBytecodeCompiler.java:292)
at org.jetbrains.jet.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.analyzeAndGenerate(KotlinToJVMBytecodeCompiler.java:273)
at org.jetbrains.jet.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileBunchOfSources(KotlinToJVMBytecodeCompiler.java:187)
at org.jetbrains.jet.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.java:141)
at org.jetbrains.jet.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.java:53)
at org.jetbrains.jet.cli.common.CLICompiler.exec(CLICompiler.java:117)
at org.jetbrains.jet.cli.jvm.K2JVMCompiler.exec(K2JVMCompiler.java:179)
at org.jetbrains.jet.cli.jvm.K2JVMCompiler.exec(K2JVMCompiler.java:53)
at org.jetbrains.jet.cli.common.CLICompiler.exec(CLICompiler.java:47)
at org.jetbrains.jet.cli.common.CLICompiler.doMainNoExit(CLICompiler.java:160)
at org.jetbrains.jet.cli.common.CLICompiler.doMain(CLICompiler.java:151)
at org.jetbrains.jet.cli.jvm.K2JVMCompiler.main(K2JVMCompiler.java:57)
exec() finished with INTERNAL_ERROR return code
