/*

 * Copyright (c) 2016, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.

 */

package jdk.internal.module;

import java.lang.module.ModuleReference;

import static jdk.internal.module.ClassFileConstants.*;

/**

 * Represents the Module Resolution flags.

 */

public final class ModuleResolution {

    final int value;

    ModuleResolution(int value) {

        this.value = value;

    }

    public int value() {

        return value;

    }

    public static ModuleResolution empty() {

        return new ModuleResolution(0);

    }

    public boolean doNotResolveByDefault() {

        return (value & DO_NOT_RESOLVE_BY_DEFAULT) != 0;

    }

    public boolean hasDeprecatedWarning() {

        return (value & WARN_DEPRECATED) != 0;

    }

    public boolean hasDeprecatedForRemovalWarning() {

        return (value & WARN_DEPRECATED_FOR_REMOVAL) != 0;

    }

    public boolean hasIncubatingWarning() {

        return (value & WARN_INCUBATING) != 0;

    }

    public ModuleResolution withDoNotResolveByDefault() {

        return new ModuleResolution(value | DO_NOT_RESOLVE_BY_DEFAULT);

    }

    public ModuleResolution withDeprecated() {

        if ((value & (WARN_DEPRECATED_FOR_REMOVAL | WARN_INCUBATING)) != 0)

            throw new InternalError("cannot add deprecated to " + value);

        return new ModuleResolution(value | WARN_DEPRECATED);

    }

    public ModuleResolution withDeprecatedForRemoval() {

        if ((value & (WARN_DEPRECATED | WARN_INCUBATING)) != 0)

            throw new InternalError("cannot add deprecated for removal to " + value);

        return new ModuleResolution(value | WARN_DEPRECATED_FOR_REMOVAL);

    }

    public ModuleResolution withIncubating() {

        if ((value & (WARN_DEPRECATED | WARN_DEPRECATED_FOR_REMOVAL)) != 0)

            throw new InternalError("cannot add incubating to " + value);

        return new ModuleResolution(value | WARN_INCUBATING);

    }

    public static boolean doNotResolveByDefault(ModuleReference mref) {

        // get the DO_NOT_RESOLVE_BY_DEFAULT flag, if any

        if (mref instanceof ModuleReferenceImpl) {

            ModuleResolution mres = ((ModuleReferenceImpl) mref).moduleResolution();

            if (mres != null)

                return mres.doNotResolveByDefault();

        }

        return false;

    }

    public static boolean hasIncubatingWarning(ModuleReference mref) {

        if (mref instanceof ModuleReferenceImpl) {

            ModuleResolution mres = ((ModuleReferenceImpl) mref).moduleResolution();

            if (mres != null)

                return mres.hasIncubatingWarning();

        }

        return false;

    }

    @Override

    public String toString() {

        return super.toString() + "[value=" + value + "]";

    }

}