Details
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Type:
Bug
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Status:
Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: None
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Component/s: None
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Labels:None
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Environment:Janino 2.4.3
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Number of attachments :
Description
The following code shows two testcases that only differ in the declaration of the variable p, which is in one case an interface and in the other case an object. The problem is that the interface code cannot be parsed and throws the following exception:
java.lang.RuntimeException: A compilation unit has no enclosing scope
at org.codehaus.janino.Java$CompilationUnit.getEnclosingScope(Unknown Source)
at org.codehaus.janino.UnitCompiler.checkThrownException(Unknown Source)
at org.codehaus.janino.UnitCompiler.findIMethod(Unknown Source)
at org.codehaus.janino.UnitCompiler.compileGet2(Unknown Source)
at org.codehaus.janino.UnitCompiler.access$46(Unknown Source)
at org.codehaus.janino.UnitCompiler$7.visitMethodInvocation(Unknown Source)
at org.codehaus.janino.Java$MethodInvocation.accept(Unknown Source)
at org.codehaus.janino.UnitCompiler.compileGet(Unknown Source)
at org.codehaus.janino.UnitCompiler.compileGetValue(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile2(Unknown Source)
at org.codehaus.janino.UnitCompiler.access$13(Unknown Source)
at org.codehaus.janino.UnitCompiler$2.visitReturnStatement(Unknown Source)
at org.codehaus.janino.Java$ReturnStatement.accept(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile2(Unknown Source)
at org.codehaus.janino.UnitCompiler.access$3(Unknown Source)
at org.codehaus.janino.UnitCompiler$2.visitBlock(Unknown Source)
at org.codehaus.janino.Java$Block.accept(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile2(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile2(Unknown Source)
at org.codehaus.janino.UnitCompiler$1.visitPackageMemberClassDeclaration(Unknown Source)
at org.codehaus.janino.Java$PackageMemberClassDeclaration.accept(Unknown Source)
at org.codehaus.janino.UnitCompiler.compile(Unknown Source)
at org.codehaus.janino.UnitCompiler.compileUnit(Unknown Source)
at jadex.parser.janinoimpl.EvaluatorBaseCopy.compileAndLoad(EvaluatorBaseCopy.java:359)
at jadex.parser.janinoimpl.EvaluatorBaseCopy.compileAndLoad(EvaluatorBaseCopy.java:390)
at jadex.parser.janinoimpl.ClassBodyEvaluatorCopy.<init>(ClassBodyEvaluatorCopy.java:125)
at jadex.parser.janinoimpl.ClassBodyEvaluatorCopy.<init>(ClassBodyEvaluatorCopy.java:69)
at jadex.parser.janinoimpl.ClassBodyEvaluatorCopy.<init>(ClassBodyEvaluatorCopy.java:54)
at jadex.parser.janinoimpl.ClassBodyEvaluatorCopy.<init>(ClassBodyEvaluatorCopy.java:21)
at Tester.main(Tester.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
import jadex.parser.janinoimpl.ClassBodyEvaluatorCopy;
public class Tester
{
public static void main(String[] args)
{
try
{
String script = "public static boolean getO() {\n" +
"IPred p = new Pred();\n"+
"return p.filter();}\n";
ClassBodyEvaluatorCopy c = new ClassBodyEvaluatorCopy(script);
System.out.println("Result1: "+c.evaluate());
}
catch(Throwable t)
{
t.printStackTrace();
}
try
{
String script = "public static boolean getO() {\n" +
"Pred p = new Pred();\n"+
"return p.filter();}\n";
ClassBodyEvaluatorCopy c = new ClassBodyEvaluatorCopy(script);
System.out.println("Result2: "+c.evaluate());
}
catch(Throwable t)
{ t.printStackTrace(); } }
}
}
interface IPred
{
public boolean filter() throws Exception;
}
class Pred implements IPred
{
public boolean filter()
}
Activity
Hello Mr. Lars,
the problem seems to be that IPred.filter() is declared with "throws Exception" clause, while get0() neither declares "throws Exception" nor encloses it the method invocation in a "try { ... } catch (Exception ex) ..." statement. Actually a compilation error
Exception "Exception" is neither declared in a "throws" clause nor is it caught in a TRY...CATCH statement
should be raised rather than throwing that embarassing RuntimeException.
I will look into this... I'm on vacation right now and cannot do anything from italy 
Stay tuned!
CU
Arno
Stay tuned!
CU
Arno 
Sorry I think this is not a bug, as the exception is not handled in the script method. I was confused because of the strange error message. Maybe is should be "unhandled exception" or sth. similar.