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apache / logging-log4j-site / d0d0de55986756593c08e5d2b8059541eacaf428 / . / log4j-2.6 / log4j-api / xref / org / apache / logging / log4j / util / ReflectionUtil.html
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<a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em>
<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache license, Version 2.0</em>
<a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2." target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em>
<a class="jxr_linenumber" name="L10" href="#L10">10</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * See the license for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * limitations under the license.</em>
<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="L17" href="#L17">17</a> <strong class="jxr_keyword">package</strong> org.apache.logging.log4j.util;
<a class="jxr_linenumber" name="L18" href="#L18">18</a>
<a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong class="jxr_keyword">import</strong> java.lang.reflect.Method;
<a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">import</strong> java.util.Stack;
<a class="jxr_linenumber" name="L21" href="#L21">21</a>
<a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.Logger;
<a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.status.StatusLogger;
<a class="jxr_linenumber" name="L24" href="#L24">24</a>
<a class="jxr_linenumber" name="L25" href="#L25">25</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L26" href="#L26">26</a> <em class="jxr_javadoccomment"> * &lt;em&gt;Consider this class private.&lt;/em&gt; Provides various methods to determine the caller class. &lt;h3&gt;Background&lt;/h3&gt;</em>
<a class="jxr_linenumber" name="L27" href="#L27">27</a> <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="L28" href="#L28">28</a> <em class="jxr_javadoccomment"> * This method, available only in the Oracle/Sun/OpenJDK implementations of the Java Virtual Machine, is a much more</em>
<a class="jxr_linenumber" name="L29" href="#L29">29</a> <em class="jxr_javadoccomment"> * efficient mechanism for determining the {@link Class} of the caller of a particular method. When it is not available,</em>
<a class="jxr_linenumber" name="L30" href="#L30">30</a> <em class="jxr_javadoccomment"> * a {@link SecurityManager} is the second-best option. When this is also not possible, the {@code StackTraceElement[]}</em>
<a class="jxr_linenumber" name="L31" href="#L31">31</a> <em class="jxr_javadoccomment"> * returned by {@link Throwable#getStackTrace()} must be used, and its {@code String} class name converted to a</em>
<a class="jxr_linenumber" name="L32" href="#L32">32</a> <em class="jxr_javadoccomment"> * {@code Class} using the slow {@link Class#forName} (which can add an extra microsecond or more for each invocation</em>
<a class="jxr_linenumber" name="L33" href="#L33">33</a> <em class="jxr_javadoccomment"> * depending on the runtime ClassLoader hierarchy).</em>
<a class="jxr_linenumber" name="L34" href="#L34">34</a> <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
<a class="jxr_linenumber" name="L35" href="#L35">35</a> <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="L36" href="#L36">36</a> <em class="jxr_javadoccomment"> * During Java 8 development, the {@code sun.reflect.Reflection.getCallerClass(int)} was removed from OpenJDK, and this</em>
<a class="jxr_linenumber" name="L37" href="#L37">37</a> <em class="jxr_javadoccomment"> * change was back-ported to Java 7 in version 1.7.0_25 which changed the behavior of the call and caused it to be off</em>
<a class="jxr_linenumber" name="L38" href="#L38">38</a> <em class="jxr_javadoccomment"> * by one stack frame. This turned out to be beneficial for the survival of this API as the change broke hundreds of</em>
<a class="jxr_linenumber" name="L39" href="#L39">39</a> <em class="jxr_javadoccomment"> * libraries and frameworks relying on the API which brought much more attention to the intended API removal.</em>
<a class="jxr_linenumber" name="L40" href="#L40">40</a> <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
<a class="jxr_linenumber" name="L41" href="#L41">41</a> <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="L42" href="#L42">42</a> <em class="jxr_javadoccomment"> * After much community backlash, the JDK team agreed to restore {@code getCallerClass(int)} and keep its existing</em>
<a class="jxr_linenumber" name="L43" href="#L43">43</a> <em class="jxr_javadoccomment"> * behavior for the rest of Java 7. However, the method is deprecated in Java 8, and current Java 9 development has not</em>
<a class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_javadoccomment"> * addressed this API. Therefore, the functionality of this class cannot be relied upon for all future versions of Java.</em>
<a class="jxr_linenumber" name="L45" href="#L45">45</a> <em class="jxr_javadoccomment"> * It does, however, work just fine in Sun JDK 1.6, OpenJDK 1.6, Oracle/OpenJDK 1.7, and Oracle/OpenJDK 1.8. Other Java</em>
<a class="jxr_linenumber" name="L46" href="#L46">46</a> <em class="jxr_javadoccomment"> * environments may fall back to using {@link Throwable#getStackTrace()} which is significantly slower due to</em>
<a class="jxr_linenumber" name="L47" href="#L47">47</a> <em class="jxr_javadoccomment"> * examination of every virtual frame of execution.</em>
<a class="jxr_linenumber" name="L48" href="#L48">48</a> <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
<a class="jxr_linenumber" name="L49" href="#L49">49</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L50" href="#L50">50</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/logging/log4j/util/ReflectionUtil.html">ReflectionUtil</a> {
<a class="jxr_linenumber" name="L51" href="#L51">51</a> <em class="jxr_comment">// Checkstyle Suppress: the lower-case 'u' ticks off CheckStyle...</em>
<a class="jxr_linenumber" name="L52" href="#L52">52</a> <em class="jxr_comment">// CHECKSTYLE:OFF</em>
<a class="jxr_linenumber" name="L53" href="#L53">53</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> JDK_7u25_OFFSET;
<a class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_comment">// CHECKSTYLE:OFF</em>
<a class="jxr_linenumber" name="L55" href="#L55">55</a>
<a class="jxr_linenumber" name="L56" href="#L56">56</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/logging/log4j/Logger.html">Logger</a> LOGGER = StatusLogger.getLogger();
<a class="jxr_linenumber" name="L57" href="#L57">57</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> SUN_REFLECTION_SUPPORTED;
<a class="jxr_linenumber" name="L58" href="#L58">58</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Method GET_CALLER_CLASS;
<a class="jxr_linenumber" name="L59" href="#L59">59</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/logging/log4j/util/ReflectionUtil.html">PrivateSecurityManager</a> SECURITY_MANAGER;
<a class="jxr_linenumber" name="L60" href="#L60">60</a>
<a class="jxr_linenumber" name="L61" href="#L61">61</a> <strong class="jxr_keyword">static</strong> {
<a class="jxr_linenumber" name="L62" href="#L62">62</a> Method getCallerClass;
<a class="jxr_linenumber" name="L63" href="#L63">63</a> <strong class="jxr_keyword">int</strong> java7u25CompensationOffset = 0;
<a class="jxr_linenumber" name="L64" href="#L64">64</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L65" href="#L65">65</a> <strong class="jxr_keyword">final</strong> Class&lt;?&gt; sunReflectionClass = LoaderUtil.loadClass(<span class="jxr_string">"sun.reflect.Reflection"</span>);
<a class="jxr_linenumber" name="L66" href="#L66">66</a> getCallerClass = sunReflectionClass.getDeclaredMethod(<span class="jxr_string">"getCallerClass"</span>, <strong class="jxr_keyword">int</strong>.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="L67" href="#L67">67</a> Object o = getCallerClass.invoke(<strong class="jxr_keyword">null</strong>, 0);
<a class="jxr_linenumber" name="L68" href="#L68">68</a> <strong class="jxr_keyword">final</strong> Object test1 = getCallerClass.invoke(<strong class="jxr_keyword">null</strong>, 0);
<a class="jxr_linenumber" name="L69" href="#L69">69</a> <strong class="jxr_keyword">if</strong> (o == <strong class="jxr_keyword">null</strong> || o != sunReflectionClass) {
<a class="jxr_linenumber" name="L70" href="#L70">70</a> LOGGER.warn(<span class="jxr_string">"Unexpected return value from Reflection.getCallerClass(): {}"</span>, test1);
<a class="jxr_linenumber" name="L71" href="#L71">71</a> getCallerClass = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L72" href="#L72">72</a> java7u25CompensationOffset = -1;
<a class="jxr_linenumber" name="L73" href="#L73">73</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="L74" href="#L74">74</a> o = getCallerClass.invoke(<strong class="jxr_keyword">null</strong>, 1);
<a class="jxr_linenumber" name="L75" href="#L75">75</a> <strong class="jxr_keyword">if</strong> (o == sunReflectionClass) {
<a class="jxr_linenumber" name="L76" href="#L76">76</a> LOGGER.warn(<span class="jxr_string">"You are using Java 1.7.0_25 which has a broken implementation of "</span>
<a class="jxr_linenumber" name="L77" href="#L77">77</a> + <span class="jxr_string">"Reflection.getCallerClass."</span>);
<a class="jxr_linenumber" name="L78" href="#L78">78</a> LOGGER.warn(<span class="jxr_string">"You should upgrade to at least Java 1.7.0_40 or later."</span>);
<a class="jxr_linenumber" name="L79" href="#L79">79</a> LOGGER.debug(<span class="jxr_string">"Using stack depth compensation offset of 1 due to Java 7u25."</span>);
<a class="jxr_linenumber" name="L80" href="#L80">80</a> java7u25CompensationOffset = 1;
<a class="jxr_linenumber" name="L81" href="#L81">81</a> }
<a class="jxr_linenumber" name="L82" href="#L82">82</a> }
<a class="jxr_linenumber" name="L83" href="#L83">83</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> Exception | LinkageError e) {
<a class="jxr_linenumber" name="L84" href="#L84">84</a> LOGGER.info(<span class="jxr_string">"sun.reflect.Reflection.getCallerClass is not supported. "</span>
<a class="jxr_linenumber" name="L85" href="#L85">85</a> + <span class="jxr_string">"ReflectionUtil.getCallerClass will be much slower due to this."</span>, e);
<a class="jxr_linenumber" name="L86" href="#L86">86</a> getCallerClass = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L87" href="#L87">87</a> java7u25CompensationOffset = -1;
<a class="jxr_linenumber" name="L88" href="#L88">88</a> }
<a class="jxr_linenumber" name="L89" href="#L89">89</a>
<a class="jxr_linenumber" name="L90" href="#L90">90</a> SUN_REFLECTION_SUPPORTED = getCallerClass != <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L91" href="#L91">91</a> GET_CALLER_CLASS = getCallerClass;
<a class="jxr_linenumber" name="L92" href="#L92">92</a> JDK_7u25_OFFSET = java7u25CompensationOffset;
<a class="jxr_linenumber" name="L93" href="#L93">93</a>
<a class="jxr_linenumber" name="L94" href="#L94">94</a> <a href="../../../../../org/apache/logging/log4j/util/ReflectionUtil.html">PrivateSecurityManager</a> psm;
<a class="jxr_linenumber" name="L95" href="#L95">95</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L96" href="#L96">96</a> <strong class="jxr_keyword">final</strong> SecurityManager sm = System.getSecurityManager();
<a class="jxr_linenumber" name="L97" href="#L97">97</a> <strong class="jxr_keyword">if</strong> (sm != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L98" href="#L98">98</a> sm.checkPermission(<strong class="jxr_keyword">new</strong> RuntimePermission(<span class="jxr_string">"createSecurityManager"</span>));
<a class="jxr_linenumber" name="L99" href="#L99">99</a> }
<a class="jxr_linenumber" name="L100" href="#L100">100</a> psm = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/logging/log4j/util/ReflectionUtil.html">PrivateSecurityManager</a>();
<a class="jxr_linenumber" name="L101" href="#L101">101</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> SecurityException ignored) {
<a class="jxr_linenumber" name="L102" href="#L102">102</a> LOGGER.debug(<span class="jxr_string">"Not allowed to create SecurityManager. "</span>
<a class="jxr_linenumber" name="L103" href="#L103">103</a> + <span class="jxr_string">"Falling back to slowest ReflectionUtil implementation."</span>);
<a class="jxr_linenumber" name="L104" href="#L104">104</a> psm = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L105" href="#L105">105</a> }
<a class="jxr_linenumber" name="L106" href="#L106">106</a> SECURITY_MANAGER = psm;
<a class="jxr_linenumber" name="L107" href="#L107">107</a> }
<a class="jxr_linenumber" name="L108" href="#L108">108</a>
<a class="jxr_linenumber" name="L109" href="#L109">109</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/logging/log4j/util/ReflectionUtil.html">ReflectionUtil</a>() {
<a class="jxr_linenumber" name="L110" href="#L110">110</a> }
<a class="jxr_linenumber" name="L111" href="#L111">111</a>
<a class="jxr_linenumber" name="L112" href="#L112">112</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> supportsFastReflection() {
<a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong class="jxr_keyword">return</strong> SUN_REFLECTION_SUPPORTED;
<a class="jxr_linenumber" name="L114" href="#L114">114</a> }
<a class="jxr_linenumber" name="L115" href="#L115">115</a>
<a class="jxr_linenumber" name="L116" href="#L116">116</a> <em class="jxr_comment">// TODO: return Object.class instead of null (though it will have a null ClassLoader)</em>
<a class="jxr_linenumber" name="L117" href="#L117">117</a> <em class="jxr_comment">// (MS) I believe this would work without any modifications elsewhere, but I could be wrong</em>
<a class="jxr_linenumber" name="L118" href="#L118">118</a>
<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em class="jxr_comment">// migrated from ReflectiveCallerClassUtility</em>
<a class="jxr_linenumber" name="L120" href="#L120">120</a> @PerformanceSensitive
<a class="jxr_linenumber" name="L121" href="#L121">121</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Class&lt;?&gt; getCallerClass(<strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> depth) {
<a class="jxr_linenumber" name="L122" href="#L122">122</a> <strong class="jxr_keyword">if</strong> (depth &lt; 0) {
<a class="jxr_linenumber" name="L123" href="#L123">123</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IndexOutOfBoundsException(Integer.toString(depth));
<a class="jxr_linenumber" name="L124" href="#L124">124</a> }
<a class="jxr_linenumber" name="L125" href="#L125">125</a> <em class="jxr_comment">// note that we need to add 1 to the depth value to compensate for this method, but not for the Method.invoke</em>
<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em class="jxr_comment">// since Reflection.getCallerClass ignores the call to Method.invoke()</em>
<a class="jxr_linenumber" name="L127" href="#L127">127</a> <strong class="jxr_keyword">if</strong> (supportsFastReflection()) {
<a class="jxr_linenumber" name="L128" href="#L128">128</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L129" href="#L129">129</a> <strong class="jxr_keyword">return</strong> (Class&lt;?&gt;) GET_CALLER_CLASS.invoke(<strong class="jxr_keyword">null</strong>, depth + 1 + JDK_7u25_OFFSET);
<a class="jxr_linenumber" name="L130" href="#L130">130</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> Exception e) {
<a class="jxr_linenumber" name="L131" href="#L131">131</a> <em class="jxr_comment">// theoretically this could happen if the caller class were native code</em>
<a class="jxr_linenumber" name="L132" href="#L132">132</a> LOGGER.error(<span class="jxr_string">"Error in ReflectionUtil.getCallerClass({})."</span>, depth, e);
<a class="jxr_linenumber" name="L133" href="#L133">133</a> <em class="jxr_comment">// TODO: return Object.class</em>
<a class="jxr_linenumber" name="L134" href="#L134">134</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L135" href="#L135">135</a> }
<a class="jxr_linenumber" name="L136" href="#L136">136</a> }
<a class="jxr_linenumber" name="L137" href="#L137">137</a> <em class="jxr_comment">// TODO: SecurityManager-based version?</em>
<a class="jxr_linenumber" name="L138" href="#L138">138</a> <em class="jxr_comment">// slower fallback method using stack trace</em>
<a class="jxr_linenumber" name="L139" href="#L139">139</a> <strong class="jxr_keyword">final</strong> StackTraceElement element = getEquivalentStackTraceElement(depth + 1);
<a class="jxr_linenumber" name="L140" href="#L140">140</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L141" href="#L141">141</a> <strong class="jxr_keyword">return</strong> LoaderUtil.loadClass(element.getClassName());
<a class="jxr_linenumber" name="L142" href="#L142">142</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> ClassNotFoundException e) {
<a class="jxr_linenumber" name="L143" href="#L143">143</a> LOGGER.error(<span class="jxr_string">"Could not find class in ReflectionUtil.getCallerClass({})."</span>, depth, e);
<a class="jxr_linenumber" name="L144" href="#L144">144</a> }
<a class="jxr_linenumber" name="L145" href="#L145">145</a> <em class="jxr_comment">// TODO: return Object.class</em>
<a class="jxr_linenumber" name="L146" href="#L146">146</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L147" href="#L147">147</a> }
<a class="jxr_linenumber" name="L148" href="#L148">148</a>
<a class="jxr_linenumber" name="L149" href="#L149">149</a> <strong class="jxr_keyword">static</strong> StackTraceElement getEquivalentStackTraceElement(<strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> depth) {
<a class="jxr_linenumber" name="L150" href="#L150">150</a> <em class="jxr_comment">// (MS) I tested the difference between using Throwable.getStackTrace() and Thread.getStackTrace(), and</em>
<a class="jxr_linenumber" name="L151" href="#L151">151</a> <em class="jxr_comment">// the version using Throwable was surprisingly faster! at least on Java 1.8. See ReflectionBenchmark.</em>
<a class="jxr_linenumber" name="L152" href="#L152">152</a> <strong class="jxr_keyword">final</strong> StackTraceElement[] elements = <strong class="jxr_keyword">new</strong> Throwable().getStackTrace();
<a class="jxr_linenumber" name="L153" href="#L153">153</a> <strong class="jxr_keyword">int</strong> i = 0;
<a class="jxr_linenumber" name="L154" href="#L154">154</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> StackTraceElement element : elements) {
<a class="jxr_linenumber" name="L155" href="#L155">155</a> <strong class="jxr_keyword">if</strong> (isValid(element)) {
<a class="jxr_linenumber" name="L156" href="#L156">156</a> <strong class="jxr_keyword">if</strong> (i == depth) {
<a class="jxr_linenumber" name="L157" href="#L157">157</a> <strong class="jxr_keyword">return</strong> element;
<a class="jxr_linenumber" name="L158" href="#L158">158</a> }
<a class="jxr_linenumber" name="L159" href="#L159">159</a> ++i;
<a class="jxr_linenumber" name="L160" href="#L160">160</a> }
<a class="jxr_linenumber" name="L161" href="#L161">161</a> }
<a class="jxr_linenumber" name="L162" href="#L162">162</a> LOGGER.error(<span class="jxr_string">"Could not find an appropriate StackTraceElement at index {}"</span>, depth);
<a class="jxr_linenumber" name="L163" href="#L163">163</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IndexOutOfBoundsException(Integer.toString(depth));
<a class="jxr_linenumber" name="L164" href="#L164">164</a> }
<a class="jxr_linenumber" name="L165" href="#L165">165</a>
<a class="jxr_linenumber" name="L166" href="#L166">166</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isValid(<strong class="jxr_keyword">final</strong> StackTraceElement element) {
<a class="jxr_linenumber" name="L167" href="#L167">167</a> <em class="jxr_comment">// ignore native methods (oftentimes are repeated frames)</em>
<a class="jxr_linenumber" name="L168" href="#L168">168</a> <strong class="jxr_keyword">if</strong> (element.isNativeMethod()) {
<a class="jxr_linenumber" name="L169" href="#L169">169</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="L170" href="#L170">170</a> }
<a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong class="jxr_keyword">final</strong> String cn = element.getClassName();
<a class="jxr_linenumber" name="L172" href="#L172">172</a> <em class="jxr_comment">// ignore OpenJDK internal classes involved with reflective invocation</em>
<a class="jxr_linenumber" name="L173" href="#L173">173</a> <strong class="jxr_keyword">if</strong> (cn.startsWith(<span class="jxr_string">"sun.reflect."</span>)) {
<a class="jxr_linenumber" name="L174" href="#L174">174</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="L175" href="#L175">175</a> }
<a class="jxr_linenumber" name="L176" href="#L176">176</a> <strong class="jxr_keyword">final</strong> String mn = element.getMethodName();
<a class="jxr_linenumber" name="L177" href="#L177">177</a> <em class="jxr_comment">// ignore use of reflection including:</em>
<a class="jxr_linenumber" name="L178" href="#L178">178</a> <em class="jxr_comment">// Method.invoke</em>
<a class="jxr_linenumber" name="L179" href="#L179">179</a> <em class="jxr_comment">// InvocationHandler.invoke</em>
<a class="jxr_linenumber" name="L180" href="#L180">180</a> <em class="jxr_comment">// Constructor.newInstance</em>
<a class="jxr_linenumber" name="L181" href="#L181">181</a> <strong class="jxr_keyword">if</strong> (cn.startsWith(<span class="jxr_string">"java.lang.reflect."</span>) &amp;&amp; (mn.equals(<span class="jxr_string">"invoke"</span>) || mn.equals(<span class="jxr_string">"newInstance"</span>))) {
<a class="jxr_linenumber" name="L182" href="#L182">182</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="L183" href="#L183">183</a> }
<a class="jxr_linenumber" name="L184" href="#L184">184</a> <em class="jxr_comment">// ignore use of Java 1.9+ reflection classes</em>
<a class="jxr_linenumber" name="L185" href="#L185">185</a> <strong class="jxr_keyword">if</strong> (cn.startsWith(<span class="jxr_string">"jdk.internal.reflect."</span>)) {
<a class="jxr_linenumber" name="L186" href="#L186">186</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="L187" href="#L187">187</a> }
<a class="jxr_linenumber" name="L188" href="#L188">188</a> <em class="jxr_comment">// ignore Class.newInstance</em>
<a class="jxr_linenumber" name="L189" href="#L189">189</a> <strong class="jxr_keyword">if</strong> (cn.equals(<span class="jxr_string">"java.lang.Class"</span>) &amp;&amp; mn.equals(<span class="jxr_string">"newInstance"</span>)) {
<a class="jxr_linenumber" name="L190" href="#L190">190</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="L191" href="#L191">191</a> }
<a class="jxr_linenumber" name="L192" href="#L192">192</a> <em class="jxr_comment">// ignore use of Java 1.7+ MethodHandle.invokeFoo() methods</em>
<a class="jxr_linenumber" name="L193" href="#L193">193</a> <strong class="jxr_keyword">if</strong> (cn.equals(<span class="jxr_string">"java.lang.invoke.MethodHandle"</span>) &amp;&amp; mn.startsWith(<span class="jxr_string">"invoke"</span>)) {
<a class="jxr_linenumber" name="L194" href="#L194">194</a> <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="L195" href="#L195">195</a> }
<a class="jxr_linenumber" name="L196" href="#L196">196</a> <em class="jxr_comment">// any others?</em>
<a class="jxr_linenumber" name="L197" href="#L197">197</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="L198" href="#L198">198</a> }
<a class="jxr_linenumber" name="L199" href="#L199">199</a>
<a class="jxr_linenumber" name="L200" href="#L200">200</a> <em class="jxr_comment">// migrated from ClassLoaderContextSelector</em>
<a class="jxr_linenumber" name="L201" href="#L201">201</a> @PerformanceSensitive
<a class="jxr_linenumber" name="L202" href="#L202">202</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Class&lt;?&gt; getCallerClass(<strong class="jxr_keyword">final</strong> String fqcn) {
<a class="jxr_linenumber" name="L203" href="#L203">203</a> <strong class="jxr_keyword">return</strong> getCallerClass(fqcn, Strings.EMPTY);
<a class="jxr_linenumber" name="L204" href="#L204">204</a> }
<a class="jxr_linenumber" name="L205" href="#L205">205</a>
<a class="jxr_linenumber" name="L206" href="#L206">206</a> <em class="jxr_comment">// migrated from Log4jLoggerFactory</em>
<a class="jxr_linenumber" name="L207" href="#L207">207</a> @PerformanceSensitive
<a class="jxr_linenumber" name="L208" href="#L208">208</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Class&lt;?&gt; getCallerClass(<strong class="jxr_keyword">final</strong> String fqcn, <strong class="jxr_keyword">final</strong> String pkg) {
<a class="jxr_linenumber" name="L209" href="#L209">209</a> <strong class="jxr_keyword">if</strong> (supportsFastReflection()) {
<a class="jxr_linenumber" name="L210" href="#L210">210</a> <strong class="jxr_keyword">boolean</strong> next = false;
<a class="jxr_linenumber" name="L211" href="#L211">211</a> Class&lt;?&gt; clazz;
<a class="jxr_linenumber" name="L212" href="#L212">212</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 2; <strong class="jxr_keyword">null</strong> != (clazz = getCallerClass(i)); i++) {
<a class="jxr_linenumber" name="L213" href="#L213">213</a> <strong class="jxr_keyword">if</strong> (fqcn.equals(clazz.getName())) {
<a class="jxr_linenumber" name="L214" href="#L214">214</a> next = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="L215" href="#L215">215</a> <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="L216" href="#L216">216</a> }
<a class="jxr_linenumber" name="L217" href="#L217">217</a> <strong class="jxr_keyword">if</strong> (next &amp;&amp; clazz.getName().startsWith(pkg)) {
<a class="jxr_linenumber" name="L218" href="#L218">218</a> <strong class="jxr_keyword">return</strong> clazz;
<a class="jxr_linenumber" name="L219" href="#L219">219</a> }
<a class="jxr_linenumber" name="L220" href="#L220">220</a> }
<a class="jxr_linenumber" name="L221" href="#L221">221</a> <em class="jxr_comment">// TODO: return Object.class</em>
<a class="jxr_linenumber" name="L222" href="#L222">222</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L223" href="#L223">223</a> }
<a class="jxr_linenumber" name="L224" href="#L224">224</a> <strong class="jxr_keyword">if</strong> (SECURITY_MANAGER != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L225" href="#L225">225</a> <strong class="jxr_keyword">return</strong> SECURITY_MANAGER.getCallerClass(fqcn, pkg);
<a class="jxr_linenumber" name="L226" href="#L226">226</a> }
<a class="jxr_linenumber" name="L227" href="#L227">227</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L228" href="#L228">228</a> <strong class="jxr_keyword">return</strong> LoaderUtil.loadClass(getCallerClassName(fqcn, pkg, <strong class="jxr_keyword">new</strong> Throwable().getStackTrace()));
<a class="jxr_linenumber" name="L229" href="#L229">229</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> ClassNotFoundException ignored) {
<a class="jxr_linenumber" name="L230" href="#L230">230</a> <em class="jxr_comment">// no problem really</em>
<a class="jxr_linenumber" name="L231" href="#L231">231</a> }
<a class="jxr_linenumber" name="L232" href="#L232">232</a> <em class="jxr_comment">// TODO: return Object.class</em>
<a class="jxr_linenumber" name="L233" href="#L233">233</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L234" href="#L234">234</a> }
<a class="jxr_linenumber" name="L235" href="#L235">235</a>
<a class="jxr_linenumber" name="L236" href="#L236">236</a> <em class="jxr_comment">// added for use in LoggerAdapter implementations mainly</em>
<a class="jxr_linenumber" name="L237" href="#L237">237</a> @PerformanceSensitive
<a class="jxr_linenumber" name="L238" href="#L238">238</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Class&lt;?&gt; getCallerClass(<strong class="jxr_keyword">final</strong> Class&lt;?&gt; anchor) {
<a class="jxr_linenumber" name="L239" href="#L239">239</a> <strong class="jxr_keyword">if</strong> (supportsFastReflection()) {
<a class="jxr_linenumber" name="L240" href="#L240">240</a> <strong class="jxr_keyword">boolean</strong> next = false;
<a class="jxr_linenumber" name="L241" href="#L241">241</a> Class&lt;?&gt; clazz;
<a class="jxr_linenumber" name="L242" href="#L242">242</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 2; <strong class="jxr_keyword">null</strong> != (clazz = getCallerClass(i)); i++) {
<a class="jxr_linenumber" name="L243" href="#L243">243</a> <strong class="jxr_keyword">if</strong> (anchor.equals(clazz)) {
<a class="jxr_linenumber" name="L244" href="#L244">244</a> next = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="L245" href="#L245">245</a> <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="L246" href="#L246">246</a> }
<a class="jxr_linenumber" name="L247" href="#L247">247</a> <strong class="jxr_keyword">if</strong> (next) {
<a class="jxr_linenumber" name="L248" href="#L248">248</a> <strong class="jxr_keyword">return</strong> clazz;
<a class="jxr_linenumber" name="L249" href="#L249">249</a> }
<a class="jxr_linenumber" name="L250" href="#L250">250</a> }
<a class="jxr_linenumber" name="L251" href="#L251">251</a> <strong class="jxr_keyword">return</strong> Object.<strong class="jxr_keyword">class</strong>;
<a class="jxr_linenumber" name="L252" href="#L252">252</a> }
<a class="jxr_linenumber" name="L253" href="#L253">253</a> <strong class="jxr_keyword">if</strong> (SECURITY_MANAGER != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L254" href="#L254">254</a> <strong class="jxr_keyword">return</strong> SECURITY_MANAGER.getCallerClass(anchor);
<a class="jxr_linenumber" name="L255" href="#L255">255</a> }
<a class="jxr_linenumber" name="L256" href="#L256">256</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L257" href="#L257">257</a> <strong class="jxr_keyword">return</strong> LoaderUtil.loadClass(getCallerClassName(anchor.getName(), Strings.EMPTY,
<a class="jxr_linenumber" name="L258" href="#L258">258</a> <strong class="jxr_keyword">new</strong> Throwable().getStackTrace()));
<a class="jxr_linenumber" name="L259" href="#L259">259</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> ClassNotFoundException ignored) {
<a class="jxr_linenumber" name="L260" href="#L260">260</a> <em class="jxr_comment">// no problem really</em>
<a class="jxr_linenumber" name="L261" href="#L261">261</a> }
<a class="jxr_linenumber" name="L262" href="#L262">262</a> <strong class="jxr_keyword">return</strong> Object.<strong class="jxr_keyword">class</strong>;
<a class="jxr_linenumber" name="L263" href="#L263">263</a> }
<a class="jxr_linenumber" name="L264" href="#L264">264</a>
<a class="jxr_linenumber" name="L265" href="#L265">265</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String getCallerClassName(<strong class="jxr_keyword">final</strong> String fqcn, <strong class="jxr_keyword">final</strong> String pkg, <strong class="jxr_keyword">final</strong> StackTraceElement... elements) {
<a class="jxr_linenumber" name="L266" href="#L266">266</a> <strong class="jxr_keyword">boolean</strong> next = false;
<a class="jxr_linenumber" name="L267" href="#L267">267</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> StackTraceElement element : elements) {
<a class="jxr_linenumber" name="L268" href="#L268">268</a> <strong class="jxr_keyword">final</strong> String className = element.getClassName();
<a class="jxr_linenumber" name="L269" href="#L269">269</a> <strong class="jxr_keyword">if</strong> (className.equals(fqcn)) {
<a class="jxr_linenumber" name="L270" href="#L270">270</a> next = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="L271" href="#L271">271</a> <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="L272" href="#L272">272</a> }
<a class="jxr_linenumber" name="L273" href="#L273">273</a> <strong class="jxr_keyword">if</strong> (next &amp;&amp; className.startsWith(pkg)) {
<a class="jxr_linenumber" name="L274" href="#L274">274</a> <strong class="jxr_keyword">return</strong> className;
<a class="jxr_linenumber" name="L275" href="#L275">275</a> }
<a class="jxr_linenumber" name="L276" href="#L276">276</a> }
<a class="jxr_linenumber" name="L277" href="#L277">277</a> <strong class="jxr_keyword">return</strong> Object.<strong class="jxr_keyword">class</strong>.getName();
<a class="jxr_linenumber" name="L278" href="#L278">278</a> }
<a class="jxr_linenumber" name="L279" href="#L279">279</a>
<a class="jxr_linenumber" name="L280" href="#L280">280</a> <em class="jxr_comment">// migrated from ThrowableProxy</em>
<a class="jxr_linenumber" name="L281" href="#L281">281</a> @PerformanceSensitive
<a class="jxr_linenumber" name="L282" href="#L282">282</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Stack&lt;Class&lt;?&gt;&gt; getCurrentStackTrace() {
<a class="jxr_linenumber" name="L283" href="#L283">283</a> <em class="jxr_comment">// benchmarks show that using the SecurityManager is much faster than looping through getCallerClass(int)</em>
<a class="jxr_linenumber" name="L284" href="#L284">284</a> <strong class="jxr_keyword">if</strong> (SECURITY_MANAGER != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L285" href="#L285">285</a> <strong class="jxr_keyword">final</strong> Class&lt;?&gt;[] array = SECURITY_MANAGER.getClassContext();
<a class="jxr_linenumber" name="L286" href="#L286">286</a> <strong class="jxr_keyword">final</strong> Stack&lt;Class&lt;?&gt;&gt; classes = <strong class="jxr_keyword">new</strong> Stack&lt;&gt;();
<a class="jxr_linenumber" name="L287" href="#L287">287</a> classes.ensureCapacity(array.length);
<a class="jxr_linenumber" name="L288" href="#L288">288</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> Class&lt;?&gt; clazz : array) {
<a class="jxr_linenumber" name="L289" href="#L289">289</a> classes.push(clazz);
<a class="jxr_linenumber" name="L290" href="#L290">290</a> }
<a class="jxr_linenumber" name="L291" href="#L291">291</a> <strong class="jxr_keyword">return</strong> classes;
<a class="jxr_linenumber" name="L292" href="#L292">292</a> }
<a class="jxr_linenumber" name="L293" href="#L293">293</a> <em class="jxr_comment">// slower version using getCallerClass where we cannot use a SecurityManager</em>
<a class="jxr_linenumber" name="L294" href="#L294">294</a> <strong class="jxr_keyword">if</strong> (supportsFastReflection()) {
<a class="jxr_linenumber" name="L295" href="#L295">295</a> <strong class="jxr_keyword">final</strong> Stack&lt;Class&lt;?&gt;&gt; classes = <strong class="jxr_keyword">new</strong> Stack&lt;&gt;();
<a class="jxr_linenumber" name="L296" href="#L296">296</a> Class&lt;?&gt; clazz;
<a class="jxr_linenumber" name="L297" href="#L297">297</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 1; <strong class="jxr_keyword">null</strong> != (clazz = getCallerClass(i)); i++) {
<a class="jxr_linenumber" name="L298" href="#L298">298</a> classes.push(clazz);
<a class="jxr_linenumber" name="L299" href="#L299">299</a> }
<a class="jxr_linenumber" name="L300" href="#L300">300</a> <strong class="jxr_keyword">return</strong> classes;
<a class="jxr_linenumber" name="L301" href="#L301">301</a> }
<a class="jxr_linenumber" name="L302" href="#L302">302</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> Stack&lt;&gt;();
<a class="jxr_linenumber" name="L303" href="#L303">303</a> }
<a class="jxr_linenumber" name="L304" href="#L304">304</a>
<a class="jxr_linenumber" name="L305" href="#L305">305</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L306" href="#L306">306</a> <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="L307" href="#L307">307</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L308" href="#L308">308</a> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/logging/log4j/util/ReflectionUtil.html">PrivateSecurityManager</a> <strong class="jxr_keyword">extends</strong> SecurityManager {
<a class="jxr_linenumber" name="L309" href="#L309">309</a>
<a class="jxr_linenumber" name="L310" href="#L310">310</a> @Override
<a class="jxr_linenumber" name="L311" href="#L311">311</a> <strong class="jxr_keyword">protected</strong> Class&lt;?&gt;[] getClassContext() {
<a class="jxr_linenumber" name="L312" href="#L312">312</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">super</strong>.getClassContext();
<a class="jxr_linenumber" name="L313" href="#L313">313</a> }
<a class="jxr_linenumber" name="L314" href="#L314">314</a>
<a class="jxr_linenumber" name="L315" href="#L315">315</a> <strong class="jxr_keyword">protected</strong> Class&lt;?&gt; getCallerClass(<strong class="jxr_keyword">final</strong> String fqcn, <strong class="jxr_keyword">final</strong> String pkg) {
<a class="jxr_linenumber" name="L316" href="#L316">316</a> <strong class="jxr_keyword">boolean</strong> next = false;
<a class="jxr_linenumber" name="L317" href="#L317">317</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> Class&lt;?&gt; clazz : getClassContext()) {
<a class="jxr_linenumber" name="L318" href="#L318">318</a> <strong class="jxr_keyword">if</strong> (fqcn.equals(clazz.getName())) {
<a class="jxr_linenumber" name="L319" href="#L319">319</a> next = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="L320" href="#L320">320</a> <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="L321" href="#L321">321</a> }
<a class="jxr_linenumber" name="L322" href="#L322">322</a> <strong class="jxr_keyword">if</strong> (next &amp;&amp; clazz.getName().startsWith(pkg)) {
<a class="jxr_linenumber" name="L323" href="#L323">323</a> <strong class="jxr_keyword">return</strong> clazz;
<a class="jxr_linenumber" name="L324" href="#L324">324</a> }
<a class="jxr_linenumber" name="L325" href="#L325">325</a> }
<a class="jxr_linenumber" name="L326" href="#L326">326</a> <em class="jxr_comment">// TODO: return Object.class</em>
<a class="jxr_linenumber" name="L327" href="#L327">327</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L328" href="#L328">328</a> }
<a class="jxr_linenumber" name="L329" href="#L329">329</a>
<a class="jxr_linenumber" name="L330" href="#L330">330</a> <strong class="jxr_keyword">protected</strong> Class&lt;?&gt; getCallerClass(<strong class="jxr_keyword">final</strong> Class&lt;?&gt; anchor) {
<a class="jxr_linenumber" name="L331" href="#L331">331</a> <strong class="jxr_keyword">boolean</strong> next = false;
<a class="jxr_linenumber" name="L332" href="#L332">332</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> Class&lt;?&gt; clazz : getClassContext()) {
<a class="jxr_linenumber" name="L333" href="#L333">333</a> <strong class="jxr_keyword">if</strong> (anchor.equals(clazz)) {
<a class="jxr_linenumber" name="L334" href="#L334">334</a> next = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="L335" href="#L335">335</a> <strong class="jxr_keyword">continue</strong>;
<a class="jxr_linenumber" name="L336" href="#L336">336</a> }
<a class="jxr_linenumber" name="L337" href="#L337">337</a> <strong class="jxr_keyword">if</strong> (next) {
<a class="jxr_linenumber" name="L338" href="#L338">338</a> <strong class="jxr_keyword">return</strong> clazz;
<a class="jxr_linenumber" name="L339" href="#L339">339</a> }
<a class="jxr_linenumber" name="L340" href="#L340">340</a> }
<a class="jxr_linenumber" name="L341" href="#L341">341</a> <strong class="jxr_keyword">return</strong> Object.<strong class="jxr_keyword">class</strong>;
<a class="jxr_linenumber" name="L342" href="#L342">342</a> }
<a class="jxr_linenumber" name="L343" href="#L343">343</a> }
<a class="jxr_linenumber" name="L344" href="#L344">344</a> }
</pre>
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