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/*
* This file is part of spark, licensed under the MIT License.
*
* Copyright (c) lucko (Luck) <luck@lucko.me>
* Copyright (c) contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
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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