Bug 308754

Description Fabian Stolz 2010-04-11 11:32:23 EDT

Build Identifier: 20090619-0625

I'm modifying an AST created by using ASTParser to parse an ICompilationUnit. The class parsed (let's call it C) has an annotation (A) which accepts a .class-literal (X.class) as parameter.

The whole thing looks like this before the modification:

@A(X.class) public class C {/*[...]*/}

The modification comprises changing C from class to interface by calling setInterface(true) on the corresponding TypeDeclaration. I then use CompilationUnit's rewrite method to create a TextFileChange which I want to use to apply the modification.

The result should look like this:

@A(X.class) public interface C {/*[...]*/}

But what happens instead is:

@A(X.interface) public class C {/*[...]*/}


See steps to reproduce for a detailed example. 

Reproducible: Always

Steps to Reproduce:
1. Use org.junit.tests.experimental.ExperimentalTests.java from JUnit 4.7 sources as ICompilationUnit "input" to reproduce the problem. The relevant part of its source is: 

package org.junit.tests.experimental;

import org.junit.runner.RunWith;
import org.junit.runners.Suite.SuiteClasses;
/*[...]*/
@RunWith(Suite.class)
@SuiteClasses( { /*[...]*/})
public class ExperimentalTests {

}

2. Parse the code:
ASTParser parser = ASTParser.newParser(AST.JLS3);
parser.setKind(ASTParser.K_COMPILATION_UNIT);
parser.setResolveBindings(true);
parser.setSource(input);
parser.setProject(input.getJavaProject());
CompilationUnit parsed = (CompilationUnit)parser.createAST(new NullProgressMonitor());

3. Activate recording of modifications:
parsed.recordModifications();

4. Modify the source using an ASTVisitor:
parsed.accept(new ASTVisitor() {
    @Override
    public boolean visit(TypeDeclaration node) {
        node.setInterface(true);
    }
});

5. Create TextFileChange (I'm using TextFileChange because the modifications are to be part of a refactoring):
TextFileChange change = new TextFileChange(input.getElementName(), (IFile)input.getResource());
change.setTextType("java");
Document document = new Document(input.getSource());
TextEdit edit = parsed.rewrite(document, input.getJavaProject().getOptions(true));
change.setEdit(edit);

6. Apply the TextFileChange:
change.perform(new NullProgressMonitor());