/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you 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.netty_voltpatches.buffer;
/**
* Utility class for heap buffers.
*/
final class HeapByteBufUtil {
static byte getByte(byte[] memory, int index) {
return memory[index];
}
static short getShort(byte[] memory, int index) {
return (short) (memory[index] << 8 | memory[index + 1] & 0xFF);
}
static int getUnsignedMedium(byte[] memory, int index) {
return (memory[index] & 0xff) << 16 |
(memory[index + 1] & 0xff) << 8 |
memory[index + 2] & 0xff;
}
static int getInt(byte[] memory, int index) {
return (memory[index] & 0xff) << 24 |
(memory[index + 1] & 0xff) << 16 |
(memory[index + 2] & 0xff) << 8 |
memory[index + 3] & 0xff;
}
static long getLong(byte[] memory, int index) {
return ((long) memory[index] & 0xff) << 56 |
((long) memory[index + 1] & 0xff) << 48 |
((long) memory[index + 2] & 0xff) << 40 |
((long) memory[index + 3] & 0xff) << 32 |
((long) memory[index + 4] & 0xff) << 24 |
((long) memory[index + 5] & 0xff) << 16 |
((long) memory[index + 6] & 0xff) << 8 |
(long) memory[index + 7] & 0xff;
}
static void setByte(byte[] memory, int index, int value) {
memory[index] = (byte) value;
}
static void setShort(byte[] memory, int index, int value) {
memory[index] = (byte) (value >>> 8);
memory[index + 1] = (byte) value;
}
static void setMedium(byte[] memory, int index, int value) {
memory[index] = (byte) (value >>> 16);
memory[index + 1] = (byte) (value >>> 8);
memory[index + 2] = (byte) value;
}
static void setInt(byte[] memory, int index, int value) {
memory[index] = (byte) (value >>> 24);
memory[index + 1] = (byte) (value >>> 16);
memory[index + 2] = (byte) (value >>> 8);
memory[index + 3] = (byte) value;
}
static void setLong(byte[] memory, int index, long value) {
memory[index] = (byte) (value >>> 56);
memory[index + 1] = (byte) (value >>> 48);
memory[index + 2] = (byte) (value >>> 40);
memory[index + 3] = (byte) (value >>> 32);
memory[index + 4] = (byte) (value >>> 24);
memory[index + 5] = (byte) (value >>> 16);
memory[index + 6] = (byte) (value >>> 8);
memory[index + 7] = (byte) value;
}
private HeapByteBufUtil() { }
}