/*

 * 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

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package com.sun.tools.javac.jvm;

import com.sun.tools.javac.util.Context;

import com.sun.tools.javac.util.Options;

import java.util.EnumSet;

import java.util.Set;

import static com.sun.tools.javac.main.Option.PROFILE;

/** The target profile.

 *

 *  <p><b>This is NOT part of any supported API.

 *  If you write code that depends on this, you do so at your own risk.

 *  This code and its internal interfaces are subject to change or

 *  deletion without notice.</b>

 */

public enum Profile {

    DEFAULT {

        @Override

        public boolean isValid(Target t) {

            return true;

        }

    };

    private static final Context.Key<Profile> profileKey = new Context.Key<>();

    public static Profile instance(Context context) {

        Profile instance = context.get(profileKey);

        if (instance == null) {

            Options options = Options.instance(context);

            String profileString = options.get(PROFILE);

            if (profileString != null) instance = lookup(profileString);

            if (instance == null) instance = DEFAULT;

            context.put(profileKey, instance);

        }

        return instance;

    }

    public final String name;

    public final int value;

    final Set<Target> targets;

    Profile() {

        name = null;

        value = Integer.MAX_VALUE;

        targets = null;

    }

    Profile(String name, int value, Target t, Target... targets) {

        this.name = name;

        this.value = value;

        this.targets = EnumSet.of(t, targets);

    }

    public static Profile lookup(String name) {

        // the set of values is small enough to do linear search

        for (Profile p: values()) {

            if (name.equals(p.name))

                return p;

        }

        return null;

    }

    public static Profile lookup(int value) {

        // the set of values is small enough to do linear search

        for (Profile p: values()) {

            if (value == p.value)

                return p;

        }

        return null;

    }

    public boolean isValid(Target t) {

        return targets.contains(t);

    }

}