test/langtools/tools/javac/api/TestGetTree.java

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/*
 * @test
 * @bug     6344177 6392177
 * @summary Can't get tree from a top level class
 * @author  Peter von der Ah\u00e9
 * @modules jdk.compiler
 * @compile TestGetTree.java
 * @compile -processor TestGetTree -proc:only TestGetTree.java
 */

import java.util.Set;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.lang.model.util.*;
import static javax.lang.model.util.ElementFilter.*;

import com.sun.source.tree.*;
import com.sun.source.util.Trees;

@SupportedAnnotationTypes("*")
public class TestGetTree extends AbstractProcessor {
    public boolean process(Set<? extends TypeElement> annotations,
                           RoundEnvironment roundEnvironment)
    {
        final Trees trees = Trees.instance(processingEnv);
        for (TypeElement e : typesIn(roundEnvironment.getRootElements())) {
            ClassTree node = trees.getTree(e);
            System.out.println(node.toString());
        }
        return true;
    }
}