| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| EndianUtils |
|
| 1.0;1 |
| 1 | /* | |
| 2 | * #%L | |
| 3 | * EndianUtils.java - mongodb-async-driver - Allanbank Consulting, Inc. | |
| 4 | * %% | |
| 5 | * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc. | |
| 6 | * %% | |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 8 | * you may not use this file except in compliance with the License. | |
| 9 | * You may obtain a copy of the License at | |
| 10 | * | |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 12 | * | |
| 13 | * Unless required by applicable law or agreed to in writing, software | |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 16 | * See the License for the specific language governing permissions and | |
| 17 | * limitations under the License. | |
| 18 | * #L% | |
| 19 | */ | |
| 20 | package com.allanbank.mongodb.bson.io; | |
| 21 | ||
| 22 | /** | |
| 23 | * Utilities to deal with integer endian differences. | |
| 24 | * | |
| 25 | * @api.no This class is <b>NOT</b> part of the drivers API. This class may be | |
| 26 | * mutated in incompatible ways between any two releases of the driver. | |
| 27 | * @copyright 2011-2013, Allanbank Consulting, Inc., All Rights Reserved | |
| 28 | */ | |
| 29 | 0 | public final class EndianUtils { |
| 30 | /** | |
| 31 | * Performs a byte-order swap for a 32-bit signed integer. | |
| 32 | * | |
| 33 | * @param value | |
| 34 | * The value to swap. | |
| 35 | * @return The swapped value. | |
| 36 | */ | |
| 37 | public static int swap(final int value) { | |
| 38 | 577 | return (((value << 24) & 0xFF000000) | ((value << 8) & 0x00FF0000) |
| 39 | | ((value >> 8) & 0x0000FF00) | ((value >> 24) & 0x000000FF)); | |
| 40 | } | |
| 41 | ||
| 42 | /** | |
| 43 | * Performs a byte-order swap for a 64-bit signed integer. | |
| 44 | * | |
| 45 | * @param value | |
| 46 | * The value to swap. | |
| 47 | * @return The swapped value. | |
| 48 | */ | |
| 49 | public static long swap(final long value) { | |
| 50 | 340 | return (((value << 56) & 0xFF00000000000000L) |
| 51 | | ((value << 40) & 0x00FF000000000000L) | |
| 52 | | ((value << 24) & 0x0000FF0000000000L) | |
| 53 | | ((value << 8) & 0x000000FF00000000L) | |
| 54 | | ((value >> 8) & 0x00000000FF000000L) | |
| 55 | | ((value >> 24) & 0x0000000000FF0000L) | |
| 56 | | ((value >> 40) & 0x000000000000FF00L) | ((value >> 56) & 0x00000000000000FFL)); | |
| 57 | } | |
| 58 | ||
| 59 | } |