mirror of https://github.com/GeyserMC/Geyser.git
95 lines
2.9 KiB
Java
95 lines
2.9 KiB
Java
/*
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* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.api;
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import org.checkerframework.checker.nullness.qual.NonNull;
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/**
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* General API class for Geyser.
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*/
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@NonNull
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public class Geyser {
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private static GeyserApiBase api;
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/**
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* Returns the base api.
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*
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* @return the base api
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*/
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public static GeyserApiBase api() {
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if (api == null) {
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throw new RuntimeException("Api has not been registered yet!");
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}
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return api;
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}
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/**
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* Returns the api of the given type.
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*
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* @param apiClass the api class
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* @param <T> the type
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* @return the api of the given type
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*/
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@SuppressWarnings("unchecked")
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public static <T extends GeyserApiBase> T api(@NonNull Class<T> apiClass) {
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if (apiClass.isInstance(api)) {
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return (T) api;
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}
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if (api == null) {
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throw new RuntimeException("Api has not been registered yet!");
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} else {
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throw new RuntimeException("Api was not an instance of " + apiClass + "! Was " + api.getClass().getCanonicalName());
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}
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}
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/**
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* Registers the given api type. The api cannot be
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* registered if {@link #registered()} is true as
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* an api has already been specified.
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*
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* @param api the api
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*/
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public static void set(@NonNull GeyserApiBase api) {
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if (Geyser.api != null) {
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throw new RuntimeException("Cannot redefine already registered api!");
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}
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Geyser.api = api;
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}
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/**
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* Gets if the api has been registered and
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* is ready for usage.
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*
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* @return if the api has been registered
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*/
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public static boolean registered() {
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return api != null;
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}
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}
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