93 lines
2.9 KiB
Java
93 lines
2.9 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2021 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.type.types;
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import com.viaversion.viaversion.api.type.Type;
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import com.viaversion.viaversion.api.type.TypeConverter;
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import io.netty.buffer.ByteBuf;
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public class VarLongType extends Type<Long> implements TypeConverter<Long> {
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public VarLongType() {
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super("VarLong", Long.class);
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}
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public long readPrimitive(ByteBuf buffer) {
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long out = 0;
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int bytes = 0;
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byte in;
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do {
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in = buffer.readByte();
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out |= (long) (in & 0x7F) << (bytes++ * 7);
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if (bytes > 10) { // 10 is maxBytes
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throw new RuntimeException("VarLong too big");
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}
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} while ((in & 0x80) == 0x80);
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return out;
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}
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public void writePrimitive(ByteBuf buffer, long object) {
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int part;
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do {
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part = (int) (object & 0x7F);
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object >>>= 7;
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if (object != 0) {
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part |= 0x80;
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}
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buffer.writeByte(part);
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} while (object != 0);
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}
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/**
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* @deprecated use {@link #readPrimitive(ByteBuf)} for manual reading to avoid wrapping
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*/
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@Override
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@Deprecated
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public Long read(ByteBuf buffer) {
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return readPrimitive(buffer);
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}
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/**
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* @deprecated use {@link #writePrimitive(ByteBuf, long)} for manual reading to avoid wrapping
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*/
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@Override
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@Deprecated
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public void write(ByteBuf buffer, Long object) {
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writePrimitive(buffer, object);
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}
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@Override
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public Long from(Object o) {
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if (o instanceof Number) {
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return ((Number) o).longValue();
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}
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if (o instanceof Boolean) {
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return ((Boolean) o) ? 1L : 0L;
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}
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return (Long) o;
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}
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} |