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/*
* This file is part of spark.
*
* Copyright (c) lucko (Luck) <luck@lucko.me>
* Copyright (c) contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package me.lucko.spark.api;
import org.checkerframework.checker.nullness.qual.NonNull;
/**
* Singleton provider for {@link Spark}.
*/
public final class SparkProvider {
private static Spark instance;
/**
* Gets the singleton spark API instance.
*
* @return the spark API instance
*/
public static @NonNull Spark get() {
Spark instance = SparkProvider.instance;
if (instance == null) {
throw new IllegalStateException("spark has not loaded yet!");
}
return instance;
}
static void set(Spark impl) {
SparkProvider.instance = impl;
}
private SparkProvider() {
throw new AssertionError();
}
}
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