Renaming the package name, is creating a compilation issue

[sourabhsparkala]

Hello,

Please find the below code

package app;

Class Test{
        public static void main(String[] args){
                  System.out.println("test");
        }
}

I am parsing the code using spoon, and I am trying to change the name of the package app

(element instanceof CtPackage){
         ((CtPackage) element).setSimpleName("newtest");
}

The output of the code is occurring as:

package .newtest;

Class Test{
        public static void main(String[] args){
                  System.out.println("test");
        }
}

There is PACKAGE_SEPERATOR '.' added before the package. I am not sure if this is the correct way of renaming the package for a class.

Regards
Sourabh

[surli]

Hi @sourabhsparkala

Could you give us more insight on the way you're renaming the package: what is the exact context of this piece of code:

(element instanceof CtPackage){
         ((CtPackage) element).setSimpleName("newtest");
}

I tried to reproduce your issue but without success yet. What version of Spoon do you use?

[sourabhsparkala]

Hello @surli

I am using this maven repository core

<dependency>
    <groupId>fr.inria.gforge.spoon</groupId>
    <artifactId>spoon-core</artifactId>
    <version>5.9.0</version>
</dependency>

I am parsing the file, and i wanted to change the package name for example

Src Input file
src/main/java/app/App.java--> the package name is 'app'

package app;

Class Test{
        public static void main(String[] args){
                  System.out.println("test");
        }
}

The processor which I wrote to process the .java file is:

public class ElementProcessor extends AbstractProcessor<CtElement>{
       public void process(CtElement element) {
              if(element instanceof CtPackage){
                      ((CtPackage) element).setSimpleName("newtest");
              }
       }
}

The output after the process should be
if the output is give as src/main/java

The final output of the folder package should be src/main/java/newtest/App.java --> package newtest

But the output in the App.java file is occurring as

package .newtest;

Class Test{
        public static void main(String[] args){
                  System.out.println("test");
        }
}

With PACKAGE_SEPERATOR '.' before as shown above. Which is creating the compilation issue.

I hope I was able to explain my requirement. Your insights would help in understanding if I am missing something here.

Regards
Sourabh

[surli]

Ok it might be a bug in Spoon but you can already fix it in ElementProcessor: the bug appears because you also rename the "root package" of Spoon, which should never be renamed.

So in ElementProcessor instead of:

if(element instanceof CtPackage){

use:

if(element instanceof CtPackage && element != getFactory().Package().getRootPackage()){