io.grpc.internal.AbstractReadableBuffer Maven / Gradle / Ivy
/*
* Copyright 2014, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package io.grpc.internal;
/**
* Abstract base class for {@link ReadableBuffer} implementations.
*/
public abstract class AbstractReadableBuffer implements ReadableBuffer {
@Override
public final int readUnsignedMedium() {
checkReadable(3);
int b1 = readUnsignedByte();
int b2 = readUnsignedByte();
int b3 = readUnsignedByte();
return b1 << 16 | b2 << 8 | b3;
}
@Override
public final int readUnsignedShort() {
checkReadable(2);
int b1 = readUnsignedByte();
int b2 = readUnsignedByte();
return b1 << 8 | b2;
}
@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();
}
}
}