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

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug     8272564
 * @summary Verify accessibility of Object-based methods inherited from super interfaces.
 * @modules jdk.compiler
 */

import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.Scope;
import com.sun.source.util.JavacTask;
import com.sun.source.util.TreePath;
import com.sun.source.util.Trees;
import java.net.URI;
import java.util.Arrays;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.lang.model.type.DeclaredType;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;

public class TestIsAccessible {
    public static void main(String[] args) throws Exception {
        final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
        assert tool != null;
        final JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, Arrays.asList(new MyFileObject()));

        CompilationUnitTree cut = ct.parse().iterator().next();
        TreePath tp = new TreePath(new TreePath(cut), cut.getTypeDecls().get(0));
        Scope s = Trees.instance(ct).getScope(tp);
        TypeElement name = ct.getElements().getTypeElement("javax.lang.model.element.Name");
        Trees trees = Trees.instance(ct);

        if (trees.isAccessible(s, name)) {
            for (Element member : ct.getElements().getAllMembers(name)) {
                if (!trees.isAccessible(s, member, (DeclaredType) name.asType())) {
                    throw new IllegalStateException("Inaccessible Name member: " + member);
                }
            }
        }
    }

    static class MyFileObject extends SimpleJavaFileObject {
        public MyFileObject() {
            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
        }
        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
            return "public class Test { }";
        }
    }
}