83 lines
2.6 KiB
Java
83 lines
2.6 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2024 ViaVersion and contributors
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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 all
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* 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 THE
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* SOFTWARE.
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*/
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package com.viaversion.viaversion.api.minecraft;
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public interface Holder<T> {
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/**
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* Returns an indirect id holder.
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*
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* @param id the id
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* @param <T> the type of the value
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* @return a new holder with the given id
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* @throws IllegalArgumentException if the id is negative
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*/
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static <T> Holder<T> of(final int id) {
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return new HolderImpl<>(id);
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}
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/**
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* Returns a direct value holder.
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*
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* @param value the value
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* @param <T> the type of the value
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* @return a new direct holder
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*/
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static <T> Holder<T> of(final T value) {
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return new HolderImpl<>(value);
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}
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/**
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* Returns true if this holder is backed by a direct value.
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*
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* @return true if the holder is direct
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* @see #hasId()
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*/
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boolean isDirect();
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/**
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* Returns true if this holder has an id.
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*
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* @return true if this holder has an id
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* @see #isDirect()
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*/
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boolean hasId();
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/**
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* Returns the value of this holder.
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*
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* @return the value of this holder
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* @throws IllegalArgumentException if this holder is not direct
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* @see #isDirect()
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*/
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T value();
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/**
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* Returns the id of this holder, or -1 if this holder is direct.
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*
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* @return the id of this holder, or -1 if this holder is direct
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* @see #hasId()
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*/
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int id();
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}
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