How to use ComputeClassWriter class of org.evomaster.client.java.instrumentation package

Best EvoMaster code snippet using org.evomaster.client.java.instrumentation.ComputeClassWriter

Source:Instrumentator.java Github

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...40 if (!ClassesToExclude.checkIfCanInstrument(className)) {41 throw new IllegalArgumentException("Cannot instrument " + className);42 }43 int asmFlags = ClassWriter.COMPUTE_FRAMES;44 ClassWriter writer = new ComputeClassWriter(asmFlags);45 ClassVisitor cv = writer;46 //avoid reading frames, as we re-compute them47 int readFlags = ClassReader.SKIP_FRAMES;48 ClassNode cn = new ClassNode();49 reader.accept(cn, readFlags);50 if(canInstrumentForCoverage(className)){51 cv = new CoverageClassVisitor(cv, className);52 } else {53 cv = new ThirdPartyClassVisitor(cv, className);54 }55 cn.accept(cv);56 return writer.toByteArray();57 }58 private boolean canInstrumentForCoverage(ClassName className){...

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ComputeClassWriter

Using AI Code Generation

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1package org.evomaster.client.java.instrumentation.example;2import org.evomaster.client.java.instrumentation.AdditionalInfo;3import org.evomaster.client.java.instrumentation.ComputeClassWriter;4import java.io.FileOutputStream;5import java.io.IOException;6import java.io.OutputStream;7import java.lang.instrument.ClassFileTransformer;8import java.lang.instrument.IllegalClassFormatException;9import java.security.ProtectionDomain;10import java.util.ArrayList;11import java.util.List;12public class ExampleTransformer implements ClassFileTransformer {13 private final List<String> classesToInstrument = new ArrayList<>();14 public ExampleTransformer() {15 classesToInstrument.add("org/evomaster/client/java/instrumentation/example/Example");16 classesToInstrument.add("org/evomaster/client/java/instrumentation/example/Example2");17 }18 public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined,19 ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {20 if (className == null) {21 return null;22 }23 if (!classesToInstrument.contains(className)) {24 return null;25 }26 ComputeClassWriter cw = new ComputeClassWriter(0, null, null, true, true);27 try {28 AdditionalInfo info = new AdditionalInfo(className, loader);29 ExampleClassVisitor cv = new ExampleClassVisitor(cw, info);30 ClassReader cr = new ClassReader(classfileBuffer);31 cr.accept(cv, 0);32 } catch (Throwable t) {33 t.printStackTrace();34 throw t;35 }36 byte[] byteCode = cw.toByteArray();37 try (OutputStream os = new FileOutputStream(className + ".class")) {38 os.write(byteCode);39 } catch (IOException e) {40 e.printStackTrace();41 }42 return byteCode;43 }44}45public ClassWriter(int flags) {46 this(flags, null, null);47}48public ComputeClassWriter(int flags, ClassVisitor classVisitor, AdditionalInfo additionalInfo, boolean computeFrames, boolean computeMaxs) {49 super(flags);50 this.classVisitor = classVisitor;

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ComputeClassWriter

Using AI Code Generation

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1public class ComputeClassWriterTest {2 public static void main(String[] args) {3 String className = "com.foo.bar.TestMe";4 String methodName = "foo";5 String methodDesc = "(Ljava/lang/String;)I";6 String methodBody = "return 0;";7 String targetDir = "/tmp";8 String targetClass = "TestMe";9 ComputeClassWriter.computeClass(className, methodName, methodDesc, methodBody, targetDir, targetClass);10 }11}12package com.foo.bar;13import org.junit.jupiter.api.Test;14class TestMe {15 void test_0() {

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ComputeClassWriter

Using AI Code Generation

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1import org.evomaster.client.java.instrumentation.ComputeClassWriter;2class ComputeClassWriterExample {3 public static void main(String[] args) {4 String targetClass = "org.example.TargetClass";5 String targetMethod = "targetMethod";6 String targetMethodDescriptor = "(Ljava/lang/String;)I";7 String targetMethodReturnType = "I";8 String targetMethodParameters = "Ljava/lang/String;";9 String className = ComputeClassWriter.computeClassName(targetClass, targetMethod, targetMethodDescriptor);10 byte[] classBytes = ComputeClassWriter.computeClassBytes(targetClass, targetMethod, targetMethodDescriptor, targetMethodReturnType, targetMethodParameters);11 System.out.println("Class name: " + className);12 System.out.println("Class bytes: " + classBytes);13 }14}

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