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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">// The portion of this file denoted by 'Copied from com.google.protobuf.CodedInputStream'</span> |
| <span class="source-line-no">019</span><span id="line-19">// is from Protocol Buffers v2.5.0 under the following license</span> |
| <span class="source-line-no">020</span><span id="line-20">//</span> |
| <span class="source-line-no">021</span><span id="line-21">// Protocol Buffers - Google's data interchange format</span> |
| <span class="source-line-no">022</span><span id="line-22">// Copyright 2008 Google Inc. All rights reserved.</span> |
| <span class="source-line-no">023</span><span id="line-23">// https://developers.google.com/protocol-buffers/</span> |
| <span class="source-line-no">024</span><span id="line-24">//</span> |
| <span class="source-line-no">025</span><span id="line-25">// Redistribution and use in source and binary forms, with or without</span> |
| <span class="source-line-no">026</span><span id="line-26">// modification, are permitted provided that the following conditions are</span> |
| <span class="source-line-no">027</span><span id="line-27">// met:</span> |
| <span class="source-line-no">028</span><span id="line-28">//</span> |
| <span class="source-line-no">029</span><span id="line-29">// * Redistributions of source code must retain the above copyright</span> |
| <span class="source-line-no">030</span><span id="line-30">// notice, this list of conditions and the following disclaimer.</span> |
| <span class="source-line-no">031</span><span id="line-31">// * Redistributions in binary form must reproduce the above</span> |
| <span class="source-line-no">032</span><span id="line-32">// copyright notice, this list of conditions and the following disclaimer</span> |
| <span class="source-line-no">033</span><span id="line-33">// in the documentation and/or other materials provided with the</span> |
| <span class="source-line-no">034</span><span id="line-34">// distribution.</span> |
| <span class="source-line-no">035</span><span id="line-35">// * Neither the name of Google Inc. nor the names of its</span> |
| <span class="source-line-no">036</span><span id="line-36">// contributors may be used to endorse or promote products derived from</span> |
| <span class="source-line-no">037</span><span id="line-37">// this software without specific prior written permission.</span> |
| <span class="source-line-no">038</span><span id="line-38">//</span> |
| <span class="source-line-no">039</span><span id="line-39">// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span> |
| <span class="source-line-no">040</span><span id="line-40">// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span> |
| <span class="source-line-no">041</span><span id="line-41">// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span> |
| <span class="source-line-no">042</span><span id="line-42">// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span> |
| <span class="source-line-no">043</span><span id="line-43">// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span> |
| <span class="source-line-no">044</span><span id="line-44">// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span> |
| <span class="source-line-no">045</span><span id="line-45">// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span> |
| <span class="source-line-no">046</span><span id="line-46">// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span> |
| <span class="source-line-no">047</span><span id="line-47">// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span> |
| <span class="source-line-no">048</span><span id="line-48">// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span> |
| <span class="source-line-no">049</span><span id="line-49">// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span> |
| <span class="source-line-no">050</span><span id="line-50">package org.apache.hadoop.hbase.util;</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">053</span><span id="line-53">import org.apache.yetus.audience.InterfaceStability;</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55">/**</span> |
| <span class="source-line-no">056</span><span id="line-56"> * An abstract implementation of the ByteRange API</span> |
| <span class="source-line-no">057</span><span id="line-57"> */</span> |
| <span class="source-line-no">058</span><span id="line-58">@InterfaceAudience.Private</span> |
| <span class="source-line-no">059</span><span id="line-59">@InterfaceStability.Evolving</span> |
| <span class="source-line-no">060</span><span id="line-60">public abstract class AbstractByteRange implements ByteRange {</span> |
| <span class="source-line-no">061</span><span id="line-61"> public static final int UNSET_HASH_VALUE = -1;</span> |
| <span class="source-line-no">062</span><span id="line-62"></span> |
| <span class="source-line-no">063</span><span id="line-63"> // Note to maintainers: Do not make these final, as the intention is to</span> |
| <span class="source-line-no">064</span><span id="line-64"> // reuse objects of this class</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> /**</span> |
| <span class="source-line-no">067</span><span id="line-67"> * The array containing the bytes in this range. It will be &gt;= length.</span> |
| <span class="source-line-no">068</span><span id="line-68"> */</span> |
| <span class="source-line-no">069</span><span id="line-69"> protected byte[] bytes;</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> /**</span> |
| <span class="source-line-no">072</span><span id="line-72"> * The index of the first byte in this range. {@code ByteRange.get(0)} will return bytes[offset].</span> |
| <span class="source-line-no">073</span><span id="line-73"> */</span> |
| <span class="source-line-no">074</span><span id="line-74"> protected int offset;</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> /**</span> |
| <span class="source-line-no">077</span><span id="line-77"> * The number of bytes in the range. Offset + length must be &lt;= bytes.length</span> |
| <span class="source-line-no">078</span><span id="line-78"> */</span> |
| <span class="source-line-no">079</span><span id="line-79"> protected int length;</span> |
| <span class="source-line-no">080</span><span id="line-80"></span> |
| <span class="source-line-no">081</span><span id="line-81"> /**</span> |
| <span class="source-line-no">082</span><span id="line-82"> * Variable for lazy-caching the hashCode of this range. Useful for frequently used ranges,</span> |
| <span class="source-line-no">083</span><span id="line-83"> * long-lived ranges, or long ranges.</span> |
| <span class="source-line-no">084</span><span id="line-84"> */</span> |
| <span class="source-line-no">085</span><span id="line-85"> protected int hash = UNSET_HASH_VALUE;</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> //</span> |
| <span class="source-line-no">088</span><span id="line-88"> // methods for managing the backing array and range viewport</span> |
| <span class="source-line-no">089</span><span id="line-89"> //</span> |
| <span class="source-line-no">090</span><span id="line-90"> @Override</span> |
| <span class="source-line-no">091</span><span id="line-91"> public byte[] getBytes() {</span> |
| <span class="source-line-no">092</span><span id="line-92"> return bytes;</span> |
| <span class="source-line-no">093</span><span id="line-93"> }</span> |
| <span class="source-line-no">094</span><span id="line-94"></span> |
| <span class="source-line-no">095</span><span id="line-95"> @Override</span> |
| <span class="source-line-no">096</span><span id="line-96"> public ByteRange set(int capacity) {</span> |
| <span class="source-line-no">097</span><span id="line-97"> return set(new byte[capacity]);</span> |
| <span class="source-line-no">098</span><span id="line-98"> }</span> |
| <span class="source-line-no">099</span><span id="line-99"></span> |
| <span class="source-line-no">100</span><span id="line-100"> @Override</span> |
| <span class="source-line-no">101</span><span id="line-101"> public ByteRange set(byte[] bytes) {</span> |
| <span class="source-line-no">102</span><span id="line-102"> if (null == bytes) {</span> |
| <span class="source-line-no">103</span><span id="line-103"> return unset();</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"></span> |
| <span class="source-line-no">106</span><span id="line-106"> clearHashCache();</span> |
| <span class="source-line-no">107</span><span id="line-107"> this.bytes = bytes;</span> |
| <span class="source-line-no">108</span><span id="line-108"> this.offset = 0;</span> |
| <span class="source-line-no">109</span><span id="line-109"> this.length = bytes.length;</span> |
| <span class="source-line-no">110</span><span id="line-110"> return this;</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"></span> |
| <span class="source-line-no">113</span><span id="line-113"> @Override</span> |
| <span class="source-line-no">114</span><span id="line-114"> public ByteRange set(byte[] bytes, int offset, int length) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> if (null == bytes) {</span> |
| <span class="source-line-no">116</span><span id="line-116"> return unset();</span> |
| <span class="source-line-no">117</span><span id="line-117"> }</span> |
| <span class="source-line-no">118</span><span id="line-118"></span> |
| <span class="source-line-no">119</span><span id="line-119"> clearHashCache();</span> |
| <span class="source-line-no">120</span><span id="line-120"> this.bytes = bytes;</span> |
| <span class="source-line-no">121</span><span id="line-121"> this.offset = offset;</span> |
| <span class="source-line-no">122</span><span id="line-122"> this.length = length;</span> |
| <span class="source-line-no">123</span><span id="line-123"> return this;</span> |
| <span class="source-line-no">124</span><span id="line-124"> }</span> |
| <span class="source-line-no">125</span><span id="line-125"></span> |
| <span class="source-line-no">126</span><span id="line-126"> @Override</span> |
| <span class="source-line-no">127</span><span id="line-127"> public int getOffset() {</span> |
| <span class="source-line-no">128</span><span id="line-128"> return offset;</span> |
| <span class="source-line-no">129</span><span id="line-129"> }</span> |
| <span class="source-line-no">130</span><span id="line-130"></span> |
| <span class="source-line-no">131</span><span id="line-131"> @Override</span> |
| <span class="source-line-no">132</span><span id="line-132"> public ByteRange setOffset(int offset) {</span> |
| <span class="source-line-no">133</span><span id="line-133"> clearHashCache();</span> |
| <span class="source-line-no">134</span><span id="line-134"> this.offset = offset;</span> |
| <span class="source-line-no">135</span><span id="line-135"> return this;</span> |
| <span class="source-line-no">136</span><span id="line-136"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"></span> |
| <span class="source-line-no">138</span><span id="line-138"> @Override</span> |
| <span class="source-line-no">139</span><span id="line-139"> public int getLength() {</span> |
| <span class="source-line-no">140</span><span id="line-140"> return length;</span> |
| <span class="source-line-no">141</span><span id="line-141"> }</span> |
| <span class="source-line-no">142</span><span id="line-142"></span> |
| <span class="source-line-no">143</span><span id="line-143"> @Override</span> |
| <span class="source-line-no">144</span><span id="line-144"> public ByteRange setLength(int length) {</span> |
| <span class="source-line-no">145</span><span id="line-145"> clearHashCache();</span> |
| <span class="source-line-no">146</span><span id="line-146"> this.length = length;</span> |
| <span class="source-line-no">147</span><span id="line-147"> return this;</span> |
| <span class="source-line-no">148</span><span id="line-148"> }</span> |
| <span class="source-line-no">149</span><span id="line-149"></span> |
| <span class="source-line-no">150</span><span id="line-150"> @Override</span> |
| <span class="source-line-no">151</span><span id="line-151"> public boolean isEmpty() {</span> |
| <span class="source-line-no">152</span><span id="line-152"> return isEmpty(this);</span> |
| <span class="source-line-no">153</span><span id="line-153"> }</span> |
| <span class="source-line-no">154</span><span id="line-154"></span> |
| <span class="source-line-no">155</span><span id="line-155"> /** Returns true when {@code range} is of zero length, false otherwise. */</span> |
| <span class="source-line-no">156</span><span id="line-156"> public static boolean isEmpty(ByteRange range) {</span> |
| <span class="source-line-no">157</span><span id="line-157"> return range == null || range.getLength() == 0;</span> |
| <span class="source-line-no">158</span><span id="line-158"> }</span> |
| <span class="source-line-no">159</span><span id="line-159"></span> |
| <span class="source-line-no">160</span><span id="line-160"> //</span> |
| <span class="source-line-no">161</span><span id="line-161"> // methods for retrieving data</span> |
| <span class="source-line-no">162</span><span id="line-162"> //</span> |
| <span class="source-line-no">163</span><span id="line-163"></span> |
| <span class="source-line-no">164</span><span id="line-164"> @Override</span> |
| <span class="source-line-no">165</span><span id="line-165"> public byte get(int index) {</span> |
| <span class="source-line-no">166</span><span id="line-166"> return bytes[offset + index];</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168"></span> |
| <span class="source-line-no">169</span><span id="line-169"> @Override</span> |
| <span class="source-line-no">170</span><span id="line-170"> public ByteRange get(int index, byte[] dst) {</span> |
| <span class="source-line-no">171</span><span id="line-171"> if (0 == dst.length) {</span> |
| <span class="source-line-no">172</span><span id="line-172"> return this;</span> |
| <span class="source-line-no">173</span><span id="line-173"> }</span> |
| <span class="source-line-no">174</span><span id="line-174"></span> |
| <span class="source-line-no">175</span><span id="line-175"> return get(index, dst, 0, dst.length);</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"></span> |
| <span class="source-line-no">178</span><span id="line-178"> @Override</span> |
| <span class="source-line-no">179</span><span id="line-179"> public ByteRange get(int index, byte[] dst, int offset, int length) {</span> |
| <span class="source-line-no">180</span><span id="line-180"> if (0 == length) {</span> |
| <span class="source-line-no">181</span><span id="line-181"> return this;</span> |
| <span class="source-line-no">182</span><span id="line-182"> }</span> |
| <span class="source-line-no">183</span><span id="line-183"></span> |
| <span class="source-line-no">184</span><span id="line-184"> System.arraycopy(this.bytes, this.offset + index, dst, offset, length);</span> |
| <span class="source-line-no">185</span><span id="line-185"> return this;</span> |
| <span class="source-line-no">186</span><span id="line-186"> }</span> |
| <span class="source-line-no">187</span><span id="line-187"></span> |
| <span class="source-line-no">188</span><span id="line-188"> @Override</span> |
| <span class="source-line-no">189</span><span id="line-189"> public short getShort(int index) {</span> |
| <span class="source-line-no">190</span><span id="line-190"> int offset = this.offset + index;</span> |
| <span class="source-line-no">191</span><span id="line-191"> short n = 0;</span> |
| <span class="source-line-no">192</span><span id="line-192"> n = (short) ((n ^ bytes[offset]) & 0xFF);</span> |
| <span class="source-line-no">193</span><span id="line-193"> n = (short) (n << 8);</span> |
| <span class="source-line-no">194</span><span id="line-194"> n = (short) ((n ^ bytes[offset + 1]) & 0xFF);</span> |
| <span class="source-line-no">195</span><span id="line-195"> return n;</span> |
| <span class="source-line-no">196</span><span id="line-196"> }</span> |
| <span class="source-line-no">197</span><span id="line-197"></span> |
| <span class="source-line-no">198</span><span id="line-198"> @Override</span> |
| <span class="source-line-no">199</span><span id="line-199"> public int getInt(int index) {</span> |
| <span class="source-line-no">200</span><span id="line-200"> int offset = this.offset + index;</span> |
| <span class="source-line-no">201</span><span id="line-201"> int n = 0;</span> |
| <span class="source-line-no">202</span><span id="line-202"> for (int i = offset; i < (offset + Bytes.SIZEOF_INT); i++) {</span> |
| <span class="source-line-no">203</span><span id="line-203"> n <<= 8;</span> |
| <span class="source-line-no">204</span><span id="line-204"> n ^= bytes[i] & 0xFF;</span> |
| <span class="source-line-no">205</span><span id="line-205"> }</span> |
| <span class="source-line-no">206</span><span id="line-206"> return n;</span> |
| <span class="source-line-no">207</span><span id="line-207"> }</span> |
| <span class="source-line-no">208</span><span id="line-208"></span> |
| <span class="source-line-no">209</span><span id="line-209"> @Override</span> |
| <span class="source-line-no">210</span><span id="line-210"> public long getLong(int index) {</span> |
| <span class="source-line-no">211</span><span id="line-211"> int offset = this.offset + index;</span> |
| <span class="source-line-no">212</span><span id="line-212"> long l = 0;</span> |
| <span class="source-line-no">213</span><span id="line-213"> for (int i = offset; i < offset + Bytes.SIZEOF_LONG; i++) {</span> |
| <span class="source-line-no">214</span><span id="line-214"> l <<= 8;</span> |
| <span class="source-line-no">215</span><span id="line-215"> l ^= bytes[i] & 0xFF;</span> |
| <span class="source-line-no">216</span><span id="line-216"> }</span> |
| <span class="source-line-no">217</span><span id="line-217"> return l;</span> |
| <span class="source-line-no">218</span><span id="line-218"> }</span> |
| <span class="source-line-no">219</span><span id="line-219"></span> |
| <span class="source-line-no">220</span><span id="line-220"> // Copied from com.google.protobuf.CodedInputStream v2.5.0 readRawVarint64</span> |
| <span class="source-line-no">221</span><span id="line-221"> @Override</span> |
| <span class="source-line-no">222</span><span id="line-222"> public long getVLong(int index) {</span> |
| <span class="source-line-no">223</span><span id="line-223"> int shift = 0;</span> |
| <span class="source-line-no">224</span><span id="line-224"> long result = 0;</span> |
| <span class="source-line-no">225</span><span id="line-225"> while (shift < 64) {</span> |
| <span class="source-line-no">226</span><span id="line-226"> final byte b = get(index++);</span> |
| <span class="source-line-no">227</span><span id="line-227"> result |= (long) (b & 0x7F) << shift;</span> |
| <span class="source-line-no">228</span><span id="line-228"> if ((b & 0x80) == 0) {</span> |
| <span class="source-line-no">229</span><span id="line-229"> break;</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"> shift += 7;</span> |
| <span class="source-line-no">232</span><span id="line-232"> }</span> |
| <span class="source-line-no">233</span><span id="line-233"> return result;</span> |
| <span class="source-line-no">234</span><span id="line-234"> }</span> |
| <span class="source-line-no">235</span><span id="line-235"> // end of copied from protobuf</span> |
| <span class="source-line-no">236</span><span id="line-236"></span> |
| <span class="source-line-no">237</span><span id="line-237"> public static int getVLongSize(long val) {</span> |
| <span class="source-line-no">238</span><span id="line-238"> int rPos = 0;</span> |
| <span class="source-line-no">239</span><span id="line-239"> while ((val & ~0x7F) != 0) {</span> |
| <span class="source-line-no">240</span><span id="line-240"> val >>>= 7;</span> |
| <span class="source-line-no">241</span><span id="line-241"> rPos++;</span> |
| <span class="source-line-no">242</span><span id="line-242"> }</span> |
| <span class="source-line-no">243</span><span id="line-243"> return rPos + 1;</span> |
| <span class="source-line-no">244</span><span id="line-244"> }</span> |
| <span class="source-line-no">245</span><span id="line-245"></span> |
| <span class="source-line-no">246</span><span id="line-246"> //</span> |
| <span class="source-line-no">247</span><span id="line-247"> // methods for duplicating the current instance</span> |
| <span class="source-line-no">248</span><span id="line-248"> //</span> |
| <span class="source-line-no">249</span><span id="line-249"></span> |
| <span class="source-line-no">250</span><span id="line-250"> @Override</span> |
| <span class="source-line-no">251</span><span id="line-251"> public byte[] deepCopyToNewArray() {</span> |
| <span class="source-line-no">252</span><span id="line-252"> byte[] result = new byte[length];</span> |
| <span class="source-line-no">253</span><span id="line-253"> System.arraycopy(bytes, offset, result, 0, length);</span> |
| <span class="source-line-no">254</span><span id="line-254"> return result;</span> |
| <span class="source-line-no">255</span><span id="line-255"> }</span> |
| <span class="source-line-no">256</span><span id="line-256"></span> |
| <span class="source-line-no">257</span><span id="line-257"> @Override</span> |
| <span class="source-line-no">258</span><span id="line-258"> public void deepCopyTo(byte[] destination, int destinationOffset) {</span> |
| <span class="source-line-no">259</span><span id="line-259"> System.arraycopy(bytes, offset, destination, destinationOffset, length);</span> |
| <span class="source-line-no">260</span><span id="line-260"> }</span> |
| <span class="source-line-no">261</span><span id="line-261"></span> |
| <span class="source-line-no">262</span><span id="line-262"> @Override</span> |
| <span class="source-line-no">263</span><span id="line-263"> public void deepCopySubRangeTo(int innerOffset, int copyLength, byte[] destination,</span> |
| <span class="source-line-no">264</span><span id="line-264"> int destinationOffset) {</span> |
| <span class="source-line-no">265</span><span id="line-265"> System.arraycopy(bytes, offset + innerOffset, destination, destinationOffset, copyLength);</span> |
| <span class="source-line-no">266</span><span id="line-266"> }</span> |
| <span class="source-line-no">267</span><span id="line-267"></span> |
| <span class="source-line-no">268</span><span id="line-268"> //</span> |
| <span class="source-line-no">269</span><span id="line-269"> // methods used for comparison</span> |
| <span class="source-line-no">270</span><span id="line-270"> //</span> |
| <span class="source-line-no">271</span><span id="line-271"></span> |
| <span class="source-line-no">272</span><span id="line-272"> @Override</span> |
| <span class="source-line-no">273</span><span id="line-273"> public int hashCode() {</span> |
| <span class="source-line-no">274</span><span id="line-274"> if (isHashCached()) {// hash is already calculated and cached</span> |
| <span class="source-line-no">275</span><span id="line-275"> return hash;</span> |
| <span class="source-line-no">276</span><span id="line-276"> }</span> |
| <span class="source-line-no">277</span><span id="line-277"> if (this.isEmpty()) {// return 0 for empty ByteRange</span> |
| <span class="source-line-no">278</span><span id="line-278"> hash = 0;</span> |
| <span class="source-line-no">279</span><span id="line-279"> return hash;</span> |
| <span class="source-line-no">280</span><span id="line-280"> }</span> |
| <span class="source-line-no">281</span><span id="line-281"> int off = offset;</span> |
| <span class="source-line-no">282</span><span id="line-282"> hash = 0;</span> |
| <span class="source-line-no">283</span><span id="line-283"> for (int i = 0; i < length; i++) {</span> |
| <span class="source-line-no">284</span><span id="line-284"> hash = 31 * hash + bytes[off++];</span> |
| <span class="source-line-no">285</span><span id="line-285"> }</span> |
| <span class="source-line-no">286</span><span id="line-286"> return hash;</span> |
| <span class="source-line-no">287</span><span id="line-287"> }</span> |
| <span class="source-line-no">288</span><span id="line-288"></span> |
| <span class="source-line-no">289</span><span id="line-289"> protected boolean isHashCached() {</span> |
| <span class="source-line-no">290</span><span id="line-290"> return hash != UNSET_HASH_VALUE;</span> |
| <span class="source-line-no">291</span><span id="line-291"> }</span> |
| <span class="source-line-no">292</span><span id="line-292"></span> |
| <span class="source-line-no">293</span><span id="line-293"> protected void clearHashCache() {</span> |
| <span class="source-line-no">294</span><span id="line-294"> hash = UNSET_HASH_VALUE;</span> |
| <span class="source-line-no">295</span><span id="line-295"> }</span> |
| <span class="source-line-no">296</span><span id="line-296"></span> |
| <span class="source-line-no">297</span><span id="line-297"> @Override</span> |
| <span class="source-line-no">298</span><span id="line-298"> public boolean equals(Object obj) {</span> |
| <span class="source-line-no">299</span><span id="line-299"> if (this == obj) {</span> |
| <span class="source-line-no">300</span><span id="line-300"> return true;</span> |
| <span class="source-line-no">301</span><span id="line-301"> }</span> |
| <span class="source-line-no">302</span><span id="line-302"> if (obj == null) {</span> |
| <span class="source-line-no">303</span><span id="line-303"> return false;</span> |
| <span class="source-line-no">304</span><span id="line-304"> }</span> |
| <span class="source-line-no">305</span><span id="line-305"> if (!(obj instanceof ByteRange)) {</span> |
| <span class="source-line-no">306</span><span id="line-306"> return false;</span> |
| <span class="source-line-no">307</span><span id="line-307"> }</span> |
| <span class="source-line-no">308</span><span id="line-308"> return compareTo((ByteRange) obj) == 0;</span> |
| <span class="source-line-no">309</span><span id="line-309"> }</span> |
| <span class="source-line-no">310</span><span id="line-310"></span> |
| <span class="source-line-no">311</span><span id="line-311"> /**</span> |
| <span class="source-line-no">312</span><span id="line-312"> * Bitwise comparison of each byte in the array. Unsigned comparison, not paying attention to</span> |
| <span class="source-line-no">313</span><span id="line-313"> * java's signed bytes.</span> |
| <span class="source-line-no">314</span><span id="line-314"> */</span> |
| <span class="source-line-no">315</span><span id="line-315"> @Override</span> |
| <span class="source-line-no">316</span><span id="line-316"> public int compareTo(ByteRange other) {</span> |
| <span class="source-line-no">317</span><span id="line-317"> return Bytes.compareTo(bytes, offset, length, other.getBytes(), other.getOffset(),</span> |
| <span class="source-line-no">318</span><span id="line-318"> other.getLength());</span> |
| <span class="source-line-no">319</span><span id="line-319"> }</span> |
| <span class="source-line-no">320</span><span id="line-320"></span> |
| <span class="source-line-no">321</span><span id="line-321"> @Override</span> |
| <span class="source-line-no">322</span><span id="line-322"> public String toString() {</span> |
| <span class="source-line-no">323</span><span id="line-323"> return Bytes.toStringBinary(bytes, offset, length);</span> |
| <span class="source-line-no">324</span><span id="line-324"> }</span> |
| <span class="source-line-no">325</span><span id="line-325">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
