/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 8197439

 * @summary Ensuring that unresolvable anonymous class is still attributed.

 * @modules jdk.compiler

 */

import java.io.*;

import java.net.*;

import java.util.*;

import javax.tools.*;

import com.sun.source.tree.CompilationUnitTree;

import com.sun.source.tree.IdentifierTree;

import com.sun.source.tree.MethodTree;

import com.sun.source.tree.VariableTree;

import com.sun.source.util.*;

public class BrokenAnonymous {

    static class JavaSource extends SimpleJavaFileObject {

        final static String source =

                        "class C {\n" +

                        "    Object o1 = new Undef1() {" +

                        "        int i = 0;\n" +

                        "        int m(int j) { return i + j; }\n" +

                        "    }\n" +

                        "    Object o2 = new Undef2<>() {" +

                        "        int i = 0;\n" +

                        "        int m(int j) { return i + j; }\n" +

                        "    }\n" +

                        "}";

        JavaSource() {

            super(URI.create("myfo:/C.java"), JavaFileObject.Kind.SOURCE);

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

    public static void main(String... args) throws IOException {

        new BrokenAnonymous().run();

    }

    void run() throws IOException {

        File destDir = new File("classes"); destDir.mkdir();

        final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();

        JavaSource source = new JavaSource();

        JavacTask ct = (JavacTask)tool.getTask(null, null, null,

                Arrays.asList("-d", destDir.getPath()),

                null,

                Arrays.asList(source));

        CompilationUnitTree cut = ct.parse().iterator().next();

        Trees trees = Trees.instance(ct);

        ct.analyze();

        new TreePathScanner<Void, Void>() {

            @Override

            public Void visitVariable(VariableTree node, Void p) {

                verifyElementType();

                return super.visitVariable(node, p);

            }

            @Override

            public Void visitMethod(MethodTree node, Void p) {

                verifyElementType();

                return super.visitMethod(node, p);

            }

            @Override

            public Void visitIdentifier(IdentifierTree node, Void p) {

                verifyElementType();

                return super.visitIdentifier(node, p);

            }

            private void verifyElementType() {

                TreePath tp = getCurrentPath();

                assertNotNull(trees.getElement(tp));

                assertNotNull(trees.getTypeMirror(tp));

            }

        }.scan(cut, null);

    }

    private void assertNotNull(Object obj) {

        if (obj == null) {

            throw new AssertionError("Unexpected null value.");

        }

    }

}