io.grpc.internal.AbstractReadableBuffer Maven / Gradle / Ivy
/*
* Copyright 2014 The gRPC Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.grpc.internal;
/**
* Abstract base class for {@link ReadableBuffer} implementations.
*/
public abstract class AbstractReadableBuffer implements ReadableBuffer {
@Override
public final int readInt() {
checkReadable(4);
int b1 = readUnsignedByte();
int b2 = readUnsignedByte();
int b3 = readUnsignedByte();
int b4 = readUnsignedByte();
return (b1 << 24) | (b2 << 16) | (b3 << 8) | b4;
}
@Override
public boolean hasArray() {
return false;
}
@Override
public byte[] array() {
throw new UnsupportedOperationException();
}
@Override
public int arrayOffset() {
throw new UnsupportedOperationException();
}
@Override
public void close() {}
protected final void checkReadable(int length) {
if (readableBytes() < length) {
throw new IndexOutOfBoundsException();
}
}
}