org.objectweb.asm.tree.ClassNode类的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
字(10.9k)|赞(0)|评价(0)|浏览(122)

本文整理了Java中org.objectweb.asm.tree.ClassNode类的一些代码示例，展示了ClassNode类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ClassNode类的具体详情如下：
包路径：org.objectweb.asm.tree.ClassNode
类名称：ClassNode

ClassNode介绍

[英]A node that represents a class.
[中]表示类的节点。

代码示例

代码示例来源：origin: Meituan-Dianping/Robust

public byte[] transformCode(byte[] b1, String className) throws IOException {
  ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
  ClassReader cr = new ClassReader(b1);
  ClassNode classNode = new ClassNode();
  Map<String, Boolean> methodInstructionTypeMap = new HashMap<>();
  cr.accept(classNode, 0);
  final List<MethodNode> methods = classNode.methods;
  for (MethodNode m : methods) {
    InsnList inList = m.instructions;
    boolean isMethodInvoke = false;
    for (int i = 0; i < inList.size(); i++) {
      if (inList.get(i).getType() == AbstractInsnNode.METHOD_INSN) {
        isMethodInvoke = true;
      }
    }
    methodInstructionTypeMap.put(m.name + m.desc, isMethodInvoke);
  }
  InsertMethodBodyAdapter insertMethodBodyAdapter = new InsertMethodBodyAdapter(cw, className, methodInstructionTypeMap);
  cr.accept(insertMethodBodyAdapter, ClassReader.EXPAND_FRAMES);
  return cw.toByteArray();
}

代码示例来源：origin: pxb1988/dex2jar

private byte[] toByteArray(ClassNode cn) {
  ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
  cn.accept(cw);
  return cw.toByteArray();
}

代码示例来源：origin: robolectric/robolectric

@Override
public FieldVisitor visitField(
  int access, String name, String desc, String signature, Object value) {
 desc = config.remapParamType(desc);
 return super.visitField(access & ~Opcodes.ACC_FINAL, name, desc, signature, value);
}

代码示例来源：origin: pxb1988/dex2jar

private void test0(InvocationWeaver iw, String prefix) throws IOException, RecognitionException {
  ClassNode before = Jasmins
      .parse(prefix + "-before.j", getClass().getResourceAsStream("/weave/" + prefix + "-before.j"));
  ClassNode expectedAfter = Jasmins
      .parse(prefix + "-after.j", getClass().getResourceAsStream("/weave/" + prefix + "-after.j"));
  ClassNode expectedGen = Jasmins
      .parse(prefix + "-gen.j", getClass().getResourceAsStream("/weave/" + prefix + "-gen.j"));
  ClassNode after = new ClassNode();
  before.accept(iw.wrapper(after));
  assertEqual(expectedAfter, after);
  ClassNode gen = new ClassNode();
  iw.buildInvocationClz(LdcOptimizeAdapter.wrap(gen));
  assertEqual(expectedGen, gen);
}

代码示例来源：origin: pxb1988/dex2jar

private ClassNode readClassNode(byte[] data) {
  ClassReader cr = new ClassReader(data);
  ClassNode cn = new ClassNode();
  cr.accept(cn, ClassReader.EXPAND_FRAMES | ClassReader.SKIP_FRAMES);
  return cn;
}

代码示例来源：origin: RS485/LogisticsPipes

private byte[] handleTileEntityClass(byte[] bytes) {
  final ClassReader reader = new ClassReader(bytes);
  final ClassNode node = new ClassNode();
  reader.accept(node, 0);
  node.interfaces.add("logisticspipes/asm/te/ILPTEInformation");
  node.visitField(Opcodes.ACC_PRIVATE, "informationObjectLogisticsPipes", "Llogisticspipes/asm/te/LPTileEntityObject;", null, null);
  for (MethodNode m : node.methods) {
    if (m.name.equals("validate") || m.name.equals("func_145829_t") || (m.name.equals("t") && m.desc.equals("()V"))) {
    mv = node.visitMethod(Opcodes.ACC_PUBLIC, "getObject", "()Llogisticspipes/asm/te/LPTileEntityObject;", null, null);
    mv.visitCode();
    Label l0 = new Label();
    mv = node.visitMethod(Opcodes.ACC_PUBLIC, "setObject", "(Llogisticspipes/asm/te/LPTileEntityObject;)V", null, null);
    mv.visitCode();
    Label l0 = new Label();
    mv.visitEnd();
  ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS);
  node.accept(writer);
  return writer.toByteArray();

代码示例来源：origin: pxb1988/dex2jar

private void disassemble1(Path file, Path output) throws IOException {
    ClassReader r = new ClassReader(Files.readAllBytes(file));
    Path jFile = output.resolve(r.getClassName().replace('.', '/') + ".j");
    createParentDirectories(jFile);
    try (BufferedWriter out = Files.newBufferedWriter(jFile, Charset.forName(encoding))) {
      PrintWriter pw = new PrintWriter(out);
      ClassNode node = new ClassNode();
      r.accept(node, (debugInfo ? 0 : ClassReader.SKIP_DEBUG) | ClassReader.EXPAND_FRAMES | ClassReader.SKIP_FRAMES);
      new JasminDumper(pw).dump(node);
      pw.flush();
    }
  }
}

代码示例来源：origin: spotbugs/spotbugs

@Override
public ClassNode analyze(IAnalysisCache analysisCache, ClassDescriptor descriptor) throws CheckedAnalysisException {
  ClassReader classReader = analysisCache.getClassAnalysis(ClassReader.class, descriptor);
  ICodeBaseEntry entry = analysisCache.getClassPath().lookupResource(descriptor.toResourceName());
  // One of the less-than-ideal features of ASM is that
  // invalid classfile format is indicated by a
  // random runtime exception rather than something
  // indicative of the real problem.
  try {
    ClassNode cn = new ClassNode();
    classReader.accept(cn, 0);
    return cn;
  } catch (RuntimeException e) {
    throw new InvalidClassFileFormatException(descriptor, entry, e);
  }
}

代码示例来源：origin: pxb1988/dex2jar

@SuppressWarnings("rawtypes")
public static void verify(final ClassReader cr, PrintWriter out) throws AnalyzerException,
    IllegalArgumentException, IllegalAccessException {
  ClassNode cn = new ClassNode();
  cr.accept(new CheckClassAdapter(cn, false), ClassReader.SKIP_DEBUG);
  List methods = cn.methods;
  for (int i = 0; i < methods.size(); ++i) {
    MethodNode method = (MethodNode) methods.get(i);
    List tryCatchBlocks = method.tryCatchBlocks;
    for (int j = 0; j < tryCatchBlocks.size(); j++) {
      TryCatchBlockNode tcn = (TryCatchBlockNode) tryCatchBlocks.get(j);
      if (tcn.start.equals(tcn.end)) {
        throw new DexException("try/catch block %d in %s has same start(%s) and end(%s)", j, method.name,
            tcn.start.getLabel(), tcn.end.getLabel());
      }
    }
    BasicVerifier verifier = new BasicVerifier();
    Analyzer a = new Analyzer(verifier);
    try {
      a.analyze(cn.name, method);
    } catch (Exception e) {
      out.println(cr.getClassName() + "." + method.name + method.desc);
      printAnalyzerResult(method, a, out);
      e.printStackTrace(out);
      out.flush();
      throw new DexException("method " + method.name + " " + method.desc, e);
    }
  }
}

代码示例来源：origin: ItzSomebody/Radon

@Override
public void transform() {
  ArrayList<String> classNames = new ArrayList<>(getClassPath().keySet());
  for (int i = 0; i < classNames.size() % 20; i++) {
    DESCRIPTORS.add("L" + classNames.get(RandomUtils.getRandomIntNoOrigin(classNames.size())) + ";");
  }
  for (int i = 0; i < this.radon.sessionInfo.getTrashClasses(); i++) {
    ClassNode classNode = generateClass();
    ClassWriter cw = new ClassWriter(0);
    cw.newUTF8("RADON" + Main.VERSION);
    classNode.accept(cw);
    this.getResources().put(classNode.name + ".class", cw.toByteArray());
  }
  LoggerUtils.stdOut(String.format("Generated %d trash classes.", this.radon.sessionInfo.getTrashClasses()));
}

代码示例来源：origin: robolectric/robolectric

byte[] instrumentToBytes(MutableClass mutableClass) {
 instrument(mutableClass);
 ClassNode classNode = mutableClass.classNode;
 ClassWriter writer = new InstrumentingClassWriter(mutableClass.classNodeProvider, classNode);
 Remapper remapper =
   new Remapper() {
    @Override
    public String map(final String internalName) {
     return mutableClass.config.mappedTypeName(internalName);
    }
   };
 ClassRemapper visitor = new ClassRemapper(writer, remapper);
 classNode.accept(visitor);
 return writer.toByteArray();
}

代码示例来源：origin: ItzSomebody/Radon

private ClassNode createClass(String className) {
  ClassNode classNode = new ClassNode();
  classNode.visit(49, ACC_SUPER + ACC_PUBLIC, className, null, "java/lang/Object", null);
  MethodVisitor mv = classNode.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
  mv.visitCode();
  mv.visitVarInsn(ALOAD, 0);
  mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
  mv.visitInsn(RETURN);
  mv.visitMaxs(1, 1);
  mv.visitEnd();
  classNode.visitEnd();
  return classNode;
}

代码示例来源：origin: pxb1988/dex2jar

private void reset0() {
  cn = new ClassNode(ASM4);
  fn = null;
  mn = null;
}

代码示例来源：origin: pxb1988/dex2jar

public void accept(ClassVisitor cv) throws RecognitionException{
  sFile();
  cn.accept(cv);
}
public ClassNode parse() throws RecognitionException {

代码示例来源：origin: robolectric/robolectric

@Override
 public MethodVisitor visitMethod(
   int access, String name, String desc, String signature, String[] exceptions) {
  MethodVisitor methodVisitor =
    super.visitMethod(access, name, config.remapParams(desc), signature, exceptions);
  return new JSRInlinerAdapter(methodVisitor, access, name, desc, signature, exceptions);
 }
};

代码示例来源：origin: robolectric/robolectric

private ClassNode createClassNode(String internalClassName) throws ClassNotFoundException {
 byte[] byteCode = getClassBytes(internalClassName);
 ClassReader classReader = new ClassReader(byteCode);
 ClassNode classNode = new ClassNode();
 classReader.accept(classNode,
   ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
 return classNode;
}

代码示例来源：origin: RS485/LogisticsPipes

public static byte[] handleTravelingItemClass(byte[] bytes) {
  final ClassReader reader = new ClassReader(bytes);
  final ClassNode node = new ClassNode();
  reader.accept(node, 0);
    FieldVisitor fv = node.visitField(Opcodes.ACC_PUBLIC, "lpRoutingInformation", "Ljava/lang/Object;", null, null);
    fv.visitEnd();
    mv = node.visitMethod(Opcodes.ACC_PUBLIC, "getLPRoutingInfoAddition", "()Ljava/lang/Object;", null, null);
    mv.visitCode();
    Label l0 = new Label();
    mv = node.visitMethod(Opcodes.ACC_PUBLIC, "setLPRoutingInfoAddition", "(Ljava/lang/Object;)V", null, null);
    mv.visitCode();
    Label l0 = new Label();
  ClassWriter writer = new ClassWriter(0/*ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES*/);
  node.accept(writer);
  return writer.toByteArray();

代码示例来源：origin: pxb1988/dex2jar

@Override
  public void visitFile(Path file, String relative) throws IOException {
    if (file.getFileName().toString().endsWith(".class")) {
      ClassReader cr = new ClassReader(Files.readAllBytes(file));
      ClassNode cn = new ClassNode();
      cr.accept(new CheckClassAdapter(cn, false),
          ClassReader.SKIP_DEBUG | ClassReader.EXPAND_FRAMES | ClassReader.SKIP_FRAMES);
      for (MethodNode method : cn.methods) {
        BasicVerifier verifier = new BasicVerifier();
        Analyzer<BasicValue> a = new Analyzer<>(verifier);
        try {
          a.analyze(cn.name, method);
        } catch (Exception ex) {
          System.err.println("Error verify method " + cr.getClassName() + "." + method.name + " "
              + method.desc);
          if (detail) {
            ex.printStackTrace(System.err);
            printAnalyzerResult(method, a, new PrintWriter(new OutputStreamWriter(System.err, StandardCharsets.UTF_8)));
          }
        }
      }
    }
  }
});

代码示例来源：origin: EvoSuite/evosuite

public boolean isAlreadyInstrumented(ClassReader reader) {
  ClassNode classNode = new ClassNode();
  int readFlags = ClassReader.SKIP_FRAMES | ClassReader.SKIP_CODE;
  reader.accept(classNode, readFlags);
  for(String interfaceName : ((List<String>)classNode.interfaces)) {
    if(InstrumentedClass.class.getName().equals(interfaceName.replace('/', '.')))
      return true;
  }
  return false;
}

代码示例来源：origin: stackoverflow.com

/**
 * Given a map of ClassNodes and mappings, returns a map of class names to
 * class bytes.
 */
public static Map<String, byte[]> process(Map<String, ClassNode> nodes, Map<String, MappedClass> mappings) {
  Map<String, byte[]> out = new HashMap<String, byte[]>();
  RemapperImpl mapper = new RemapperImpl(mappings);
  for (ClassNode cn : nodes.values()) {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    ClassVisitor remapper = new ClassRemapper(cw, mapper);
    cn.accept(remapper);
    out.put(mappings.get(cn.name).getNewName(), cw.toByteArray());
  }
  return out;
}

内容来源于网络，如有侵权，请联系作者删除！

ClassNode

相关文章

    查看更多
    微信公众号

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com