161 lines
4.3 KiB
Java
161 lines
4.3 KiB
Java
/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.net5.buffer;
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import static java.util.Objects.requireNonNull;
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import io.net5.util.internal.StringUtil;
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/**
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* Default implementation of a {@link ByteBufHolder} that holds it's data in a {@link ByteBuf}.
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*
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*/
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public class DefaultByteBufHolder implements ByteBufHolder {
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private final ByteBuf data;
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public DefaultByteBufHolder(ByteBuf data) {
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requireNonNull(data, "data");
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this.data = data;
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}
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@Override
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public ByteBuf content() {
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return ByteBufUtil.ensureAccessible(data);
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}
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/**
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* {@inheritDoc}
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* <p>
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* This method calls {@code replace(content().copy())} by default.
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*/
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@Override
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public ByteBufHolder copy() {
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return replace(data.copy());
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}
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/**
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* {@inheritDoc}
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* <p>
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* This method calls {@code replace(content().duplicate())} by default.
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*/
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@Override
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public ByteBufHolder duplicate() {
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return replace(data.duplicate());
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}
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/**
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* {@inheritDoc}
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* <p>
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* This method calls {@code replace(content().retainedDuplicate())} by default.
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*/
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@Override
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public ByteBufHolder retainedDuplicate() {
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return replace(data.retainedDuplicate());
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}
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/**
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* {@inheritDoc}
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* <p>
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* Override this method to return a new instance of this object whose content is set to the specified
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* {@code content}. The default implementation of {@link #copy()}, {@link #duplicate()} and
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* {@link #retainedDuplicate()} invokes this method to create a copy.
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*/
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@Override
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public ByteBufHolder replace(ByteBuf content) {
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return new DefaultByteBufHolder(content);
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}
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@Override
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public int refCnt() {
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return data.refCnt();
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}
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@Override
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public ByteBufHolder retain() {
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data.retain();
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return this;
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}
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@Override
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public ByteBufHolder retain(int increment) {
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data.retain(increment);
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return this;
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}
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@Override
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public ByteBufHolder touch() {
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data.touch();
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return this;
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}
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@Override
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public ByteBufHolder touch(Object hint) {
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data.touch(hint);
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return this;
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}
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@Override
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public boolean release() {
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return data.release();
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}
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@Override
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public boolean release(int decrement) {
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return data.release(decrement);
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}
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/**
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* Return {@link ByteBuf#toString()} without checking the reference count first. This is useful to implement
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* {@link #toString()}.
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*/
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protected final String contentToString() {
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return data.toString();
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}
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@Override
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public String toString() {
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return StringUtil.simpleClassName(this) + '(' + contentToString() + ')';
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}
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/**
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* This implementation of the {@code equals} operation is restricted to
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* work only with instances of the same class. The reason for that is that
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* Netty library already has a number of classes that extend {@link DefaultByteBufHolder} and
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* override {@code equals} method with an additional comparison logic and we
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* need the symmetric property of the {@code equals} operation to be preserved.
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*
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* @param o the reference object with which to compare.
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* @return {@code true} if this object is the same as the obj
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* argument; {@code false} otherwise.
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*/
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o != null && getClass() == o.getClass()) {
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return data.equals(((DefaultByteBufHolder) o).data);
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}
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return false;
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}
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@Override
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public int hashCode() {
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return data.hashCode();
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}
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}
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