/*

 * Copyright (c) 2006, 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 6402516

 * @summary need Trees.getScope(TreePath)

 * @build Checker CheckIsAccessible

 * @run main CheckIsAccessible

 */

import java.util.*;

import com.sun.source.tree.*;

import com.sun.source.util.*;

import javax.lang.model.element.*;

import javax.lang.model.type.*;

import javax.lang.model.util.*;

/*

 * Check the accessibility of items of a scope against the contents of string literals.

 */

public class CheckIsAccessible extends Checker {

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

        Checker chk = new CheckIsAccessible();

        chk.check("TestIsAccessible.java", "A.java");

    }

    @Override

    protected boolean check(Scope s, String ref) {

        System.err.println("checkIsAccessible: " + s + " " + s.getEnclosingClass() + " " + ref);

        if (ref.length() == 0)

            return true;

        Trees trees = getTrees();

        String[] args = ref.split(" +", 3);

        boolean expect = args[args.length - 1].equals("yes");

        boolean actual;

        switch (args.length) {

        case 2:

            TypeElement te = getTypeElement(args[0]);

            actual = trees.isAccessible(s, te);

            if (actual != expect)

                error(s, ref, "accessible issue found: " + te + " " + actual);

            break;

        case 3:

            DeclaredType site = getType(args[0]);

            Element member = getMember(args[1]);

            actual = trees.isAccessible(s, member, site);

            if (actual != expect)

                error(s, ref, "accessible issue found: " + member + "@" + site + " " + actual);

            break;

        default:

            throw new IllegalArgumentException(ref);

        }

        return (actual == expect);

    }

    private TypeElement getTypeElement(String name) {

        TypeElement te = getElements().getTypeElement(name);

        if (te == null)

            throw new IllegalArgumentException("can't find element " + name);

        return te;

    }

    private DeclaredType getType(String name) {

        return (DeclaredType)(getTypeElement(name).asType());

    }

    private Element getMember(String name) {

        int sep = name.indexOf("#");

        String tname = name.substring(0, sep);

        String mname = name.substring(sep+1);

        TypeElement te = getTypeElement(tname);

        for (Element e: te.getEnclosedElements()) {

            if (mname.contentEquals(e.getSimpleName()))

                return e;

        }

        throw new IllegalArgumentException("can't find member " + mname + " in " + tname);

    }

}