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| <div class="subTitle">org.apache.drill.exec.compile</div> |
| <h2 title="Class AsmUtil" class="title">Class AsmUtil</h2> |
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| <li>org.apache.drill.exec.compile.AsmUtil</li> |
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| <pre>public class <span class="typeNameLabel">AsmUtil</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Utilities commonly used with ASM. |
| |
| <p>There are several class verification utilities which use |
| CheckClassAdapter (DrillCheckClassAdapter) to ensure classes are well-formed; |
| these are packaged as boolean functions so that they can be used in assertions.</div> |
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| <h3>Method Summary</h3> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static org.objectweb.asm.tree.ClassNode</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/AsmUtil.html#classFromBytes-byte:A-int-">classFromBytes</a></span>(byte[] classBytes, |
| int asmReaderFlags)</code> |
| <div class="block">Create a ClassNode from bytecode.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/AsmUtil.html#isClassBytesOk-org.slf4j.Logger-java.lang.String-byte:A-">isClassBytesOk</a></span>(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| byte[] classBytes)</code> |
| <div class="block">Check to see if a class is well-formed.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/AsmUtil.html#isClassOk-org.slf4j.Logger-java.lang.String-org.objectweb.asm.tree.ClassNode-">isClassOk</a></span>(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| org.objectweb.asm.tree.ClassNode classNode)</code> |
| <div class="block">Check to see if a class is well-formed.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/AsmUtil.html#isXadd-int-">isXadd</a></span>(int opcode)</code> |
| <div class="block">Determine if the given opcode is an ADD of some kind (xADD).</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/AsmUtil.html#isXconst-int-">isXconst</a></span>(int opcode)</code> |
| <div class="block">Determine if the given opcode is a load of a constant (xCONST_y).</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/AsmUtil.html#logClass-org.slf4j.Logger-java.lang.String-org.objectweb.asm.tree.ClassNode-">logClass</a></span>(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| org.objectweb.asm.tree.ClassNode classNode)</code> |
| <div class="block">Write a class to the log.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/AsmUtil.html#logClassFromBytes-org.slf4j.Logger-java.lang.String-byte:A-">logClassFromBytes</a></span>(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| byte[] classBytes)</code> |
| <div class="block">Write a class to the log.</div> |
| </td> |
| </tr> |
| </table> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <h4>isClassOk</h4> |
| <pre>public static boolean isClassOk(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| org.objectweb.asm.tree.ClassNode classNode)</pre> |
| <div class="block">Check to see if a class is well-formed.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>logger</code> - the logger to write to if a problem is found</dd> |
| <dd><code>logTag</code> - a tag to print to the log if a problem is found</dd> |
| <dd><code>classNode</code> - the class to check</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the class is ok, false otherwise</dd> |
| </dl> |
| </li> |
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| <h4>isClassBytesOk</h4> |
| <pre>public static boolean isClassBytesOk(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| byte[] classBytes)</pre> |
| <div class="block">Check to see if a class is well-formed.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>logger</code> - the logger to write to if a problem is found</dd> |
| <dd><code>logTag</code> - a tag to print to the log if a problem is found</dd> |
| <dd><code>classBytes</code> - the bytecode of the class to check</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the class is ok, false otherwise</dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
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| <h4>classFromBytes</h4> |
| <pre>public static org.objectweb.asm.tree.ClassNode classFromBytes(byte[] classBytes, |
| int asmReaderFlags)</pre> |
| <div class="block">Create a ClassNode from bytecode.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>classBytes</code> - the bytecode</dd> |
| <dd><code>asmReaderFlags</code> - flags for ASM; see <code>ClassReader.accept(org.objectweb.asm.ClassVisitor, int)</code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the ClassNode</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="logClass-org.slf4j.Logger-java.lang.String-org.objectweb.asm.tree.ClassNode-"> |
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| <h4>logClass</h4> |
| <pre>public static void logClass(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| org.objectweb.asm.tree.ClassNode classNode)</pre> |
| <div class="block">Write a class to the log. |
| |
| <p> |
| Writes at level TRACE.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>logger</code> - the logger to write to</dd> |
| <dd><code>logTag</code> - a tag to print to the log</dd> |
| <dd><code>classNode</code> - the class</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>logClassFromBytes</h4> |
| <pre>public static void logClassFromBytes(org.slf4j.Logger logger, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> logTag, |
| byte[] classBytes)</pre> |
| <div class="block">Write a class to the log. |
| |
| <p>Writes at level DEBUG.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>logTag</code> - a tag to print to the log</dd> |
| <dd><code>classBytes</code> - the class' bytecode</dd> |
| <dd><code>logger</code> - the logger to write to</dd> |
| </dl> |
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| <h4>isXconst</h4> |
| <pre>public static boolean isXconst(int opcode)</pre> |
| <div class="block">Determine if the given opcode is a load of a constant (xCONST_y).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>opcode</code> - the opcode</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the opcode is one of the constant loading ones, false otherwise</dd> |
| </dl> |
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| <h4>isXadd</h4> |
| <pre>public static boolean isXadd(int opcode)</pre> |
| <div class="block">Determine if the given opcode is an ADD of some kind (xADD).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>opcode</code> - the opcode</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the opcode is one of the ADDs, false otherwise</dd> |
| </dl> |
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