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

x33g5p2x  于2022-01-21 转载在 其他  
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本文整理了Java中org.objectweb.asm.tree.JumpInsnNode类的一些代码示例，展示了JumpInsnNode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。JumpInsnNode类的具体详情如下：
包路径：org.objectweb.asm.tree.JumpInsnNode
类名称：JumpInsnNode

JumpInsnNode介绍

[英]A node that represents a jump instruction. A jump instruction is an instruction that may jump to another instruction.
[中]表示跳转指令的节点。跳转指令是可以跳转到另一条指令的指令。

代码示例

代码示例来源：origin: jphp-group/jphp

public void writeConditional(ExprStmtToken condition, LabelNode successLabel) {
  writeExpression(condition, true, false);
  writePopBoolean();
  code.add(new JumpInsnNode(IFEQ, successLabel));
  stackPop();
}

代码示例来源：origin: Sable/soot

worklist.add(new Edge(instructions.getFirst(), new ArrayList<Operand>()));
conversionWorklist = worklist;
edges = HashBasedTable.create(1, 1);
   JumpInsnNode jmp = (JumpInsnNode) insn;
   convertJumpInsn(jmp);
   int op = jmp.getOpcode();
   if (op == JSR) {
    throw new UnsupportedOperationException("JSR!");

代码示例来源：origin: EvoSuite/evosuite

private static InsnList createNewIfThenElse(MethodInsnNode n) {
  LabelNode labelIsNotEmpty = new LabelNode();
  LabelNode labelEndif = new LabelNode();
  InsnList il = new InsnList();
  il.add(n);
  il.add(new JumpInsnNode(Opcodes.IFLE, labelIsNotEmpty));
  il.add(new InsnNode(Opcodes.ICONST_1));
  il.add(new JumpInsnNode(Opcodes.GOTO, labelEndif));
  il.add(labelIsNotEmpty);
  il.add(new InsnNode(Opcodes.ICONST_0));
  il.add(labelEndif);
  return il;
}

代码示例来源：origin: jphp-group/jphp

writePopBoolean();
LabelNode end = new LabelNode();
LabelNode next = new LabelNode();
  code.add(new JumpInsnNode(IFEQ, next));
  stackPop();
  if (returnValue) {
  code.add(new JumpInsnNode(IFNE, next));
  stackPop();
  if (returnValue) {
code.add(new JumpInsnNode(GOTO, end));
code.add(next);

代码示例来源：origin: TeamWizardry/Wizardry

newInstructions.add(new VarInsnNode(ALOAD, 1));
  newInstructions.add(new MethodInsnNode(INVOKESTATIC, ASM_HOOKS, "entityRenderShadowAndFire",
      "(L" + CLASS_ENTITY + ";)Z", false));
  newInstructions.add(new JumpInsnNode(IFNE, node1));
  newInstructions.add(new InsnNode(RETURN));
methodNode -> {
  InsnList newInstructions = new InsnList();
  LabelNode node1 = new LabelNode();
  newInstructions.add(new VarInsnNode(ALOAD, 0));
  newInstructions.add(new InsnNode(DUP));
  newInstructions.add(new MethodInsnNode(INVOKEVIRTUAL, CLASS_EVENT, "isCanceled", "()Z", false));
  newInstructions.add(new JumpInsnNode(IFEQ, node1));
  newInstructions.add(new InsnNode(POP));
  newInstructions.add(new InsnNode(RETURN));
  newInstructions.add(new InsnNode(DUP));
  newInstructions.add(new MethodInsnNode(INVOKEVIRTUAL, CLASS_EVENT, "isCanceled", "()Z", false));
  newInstructions.add(new JumpInsnNode(IFEQ, node1));
  newInstructions.add(new InsnNode(POP));
  newInstructions.add(new InsnNode(RETURN));

代码示例来源：origin: squeek502/VeganOption

InsnList toInject = new InsnList();
LabelNode ifNotCanceled = new LabelNode();
toInject.add(new VarInsnNode(Opcodes.ALOAD, 1));
toInject.add(new VarInsnNode(Opcodes.ALOAD, 2));
toInject.add(new VarInsnNode(Opcodes.ALOAD, 3));
toInject.add(new VarInsnNode(Opcodes.ILOAD, 4));
toInject.add(new MethodInsnNode(Opcodes.INVOKESTATIC, Type.getInternalName(Hooks.class), "onFlowIntoBlock", "(Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/block/state/IBlockState;I)Z", false));
toInject.add(new JumpInsnNode(Opcodes.IFEQ, ifNotCanceled));
toInject.add(new InsnNode(Opcodes.RETURN));
toInject.add(ifNotCanceled);
LabelNode varStartLabel = new LabelNode();
LocalVariableNode localVar = new LocalVariableNode("isBlockFullCube", "I", method.signature, varStartLabel, end, method.maxLocals);
method.maxLocals++;
toInject.add(new VarInsnNode(ISTORE, localVar.index));		// isBlockFullCube = Hooks.isBlockFullCube(...)
toInject.add(varStartLabel);								// variable scope start
LabelNode label = new LabelNode();							// label if condition is true
toInject.add(new VarInsnNode(ILOAD, localVar.index));		// isBlockFullCube
toInject.add(new InsnNode(ICONST_M1));						// -1
toInject.add(new JumpInsnNode(IF_ICMPEQ, label));			// isBlockFullCube != -1
LabelNode labelReturnIf = new LabelNode();					// label if second condition is true
toInject.add(new VarInsnNode(ILOAD, localVar.index));		// isBlockFullCube
toInject.add(new JumpInsnNode(IFEQ, labelReturnIf));		// isBlockFullCube != 0
toInject.add(new InsnNode(ICONST_1));						// 1 (true)
toInject.add(new InsnNode(IRETURN));						// return true;

代码示例来源：origin: jphp-group/jphp

private void writeBody(IfStmtToken token) {
  LabelNode end = new LabelNode();
  LabelNode elseL = new LabelNode();
  expr.writePopBoolean();
  add(new JumpInsnNode(IFEQ, token.getElseBody() != null ? elseL : end));
  expr.stackPop();
  if (token.getBody() != null) {
    expr.write(token.getBody());
  }
  if (token.getElseBody() != null){
    add(new JumpInsnNode(GOTO, end));
    add(elseL);
    expr.write(token.getElseBody());
  }
  add(end);
  add(new LineNumberNode(token.getMeta().getEndLine(), end));
}

代码示例来源：origin: fge/grappa

Objects.requireNonNull(method, "method");
AbstractInsnNode current = method.instructions.getLast();
final LabelNode lastReturnLabel = new LabelNode();
method.instructions.insertBefore(current, lastReturnLabel);
    continue;
  final JumpInsnNode insn = new JumpInsnNode(GOTO, lastReturnLabel);
  method.instructions.set(current, insn);
  current = insn;

代码示例来源：origin: copper-engine/copper-engine

HashSet<Label> labels = new HashSet<Label>();
for (TryCatchBlockNode catchNode : (List<TryCatchBlockNode>) m.tryCatchBlocks) {
  if (labels.contains(catchNode.handler.getLabel())) {
  labels.add(catchNode.handler.getLabel());
  AbstractInsnNode lineNumberNode = labelNode.getNext() instanceof LineNumberNode ? labelNode.getNext() : labelNode;
  FrameNode frameNode = (FrameNode) lineNumberNode.getNext();
  VarInsnNode varInsnNode = (VarInsnNode) frameNode.getNext();
  LabelNode labelNode4ifeg = new LabelNode();
  InsnList newCode = new InsnList();
  newCode.add(new VarInsnNode(Opcodes.ALOAD, varInsnNode.var));
  newCode.add(new TypeInsnNode(Opcodes.INSTANCEOF, INTERRUPT_EXCEPTION_NAME));
  newCode.add(new JumpInsnNode(Opcodes.IFEQ, labelNode4ifeg));
  newCode.add(new VarInsnNode(Opcodes.ALOAD, varInsnNode.var));
  newCode.add(new TypeInsnNode(Opcodes.CHECKCAST, INTERRUPT_EXCEPTION_NAME));

代码示例来源：origin: EvoSuite/evosuite

@Override
protected AbstractInsnNode transformJumpInsnNode(MethodNode mn,
    JumpInsnNode jumpNode) {
  if (jumpNode.getOpcode() == Opcodes.IFNE) {
    if (this.booleanTestabilityTransformation.isBooleanOnStack(mn, jumpNode, 0)) {
      TransformationStatistics.transformedBooleanComparison();
      BooleanTestabilityTransformation.logger.info("Changing IFNE");
      jumpNode.setOpcode(Opcodes.IFGT);
    } else {
      BooleanTestabilityTransformation.logger.info("Not changing IFNE");
      int insnPosition = mn.instructions.indexOf(jumpNode);
      Frame frame = this.booleanTestabilityTransformation.currentFrames[insnPosition];
      AbstractInsnNode insn = mn.instructions.get(insnPosition - 1);
      BooleanTestabilityTransformation.logger.info("Current node: " + mn.instructions.get(insnPosition));
      BooleanTestabilityTransformation.logger.info("Previous node: " + insn);
      if (insn instanceof MethodInsnNode) {
                                           mi.desc)) == Type.BOOLEAN_TYPE) {
          BooleanTestabilityTransformation.logger.info("Changing IFNE");
          jumpNode.setOpcode(Opcodes.IFGT);
  } else if (jumpNode.getOpcode() == Opcodes.IFEQ) {
    if (this.booleanTestabilityTransformation.isBooleanOnStack(mn, jumpNode, 0)) {
      TransformationStatistics.transformedBooleanComparison();
      BooleanTestabilityTransformation.logger.info("Changing IFEQ");
      jumpNode.setOpcode(Opcodes.IFLE);
    } else {
      BooleanTestabilityTransformation.logger.info("Not changing IFEQ");
        if (Type.getReturnType(BooleanTestabilityTransformation.getOriginalDesc(mi.owner, mi.name, mi.desc)) == Type.BOOLEAN_TYPE) {

代码示例来源：origin: EvoSuite/evosuite

final LabelNode l0 = new LabelNode();
final LabelNode l1 = new LabelNode();
final LabelNode l2 = new LabelNode();
  ListIterator<AbstractInsnNode> iter = methodNode.instructions.iterator();
    wInstructions.add(ins);
  wInstructions.add(new InsnNode(Opcodes.ACONST_NULL));
  wInstructions.add(new VarInsnNode(Opcodes.ASTORE, varReturnValue));
  wInstructions.add(new JumpInsnNode(Opcodes.GOTO, l2));

代码示例来源：origin: EvoSuite/evosuite

for (Integer op : getOperators(node.getOpcode(), isBoolean)) {
  logger.debug("Adding replacement " + op);
  if (op >= 0) {
    JumpInsnNode mutation = new JumpInsnNode(op, target);
                                  + getOp(node.getOpcode())
                                  + " -> "
                                  + getOp(op),
                              instruction,
                              mutation,
                              getInfectionDistance(node.getOpcode(),
                                        op));
    mutations.add(mutationObject);
    InsnList mutation = new InsnList();
    if (opcodesInt.contains(node.getOpcode()))
      mutation.add(new InsnNode(Opcodes.POP));
    else
      mutation.add(new InsnNode(Opcodes.POP2));
    mutation.add(new JumpInsnNode(Opcodes.IFNE, target));
    Mutation mutationObject = MutationPool.addMutation(className,
                              methodName,
                              NAME + " "
                                  + getOp(node.getOpcode())
                                  + " -> " + op,
                              instruction,
                              mutation,

代码示例来源：origin: mjanicek/rembulan

private InsnList _goto(Label label) {
  InsnList il = new InsnList();
  if (!isSub() || resolver.isLocalLabel(label)) {
    il.add(new JumpInsnNode(GOTO, l(label)));
  }
  else {
    il.add(_nonLocalGoto(label));
  }
  return il;
}

代码示例来源：origin: ItzSomebody/Radon

LabelNode lb = new LabelNode();
LabelNode escapeNode = new LabelNode();
AbstractInsnNode target = methodNode.instructions.getFirst();
methodNode.instructions.insertBefore(target, new JumpInsnNode(GOTO, escapeNode));
methodNode.instructions.insertBefore(target, lb);
Type returnType = Type.getReturnType(methodNode.desc);
switch (returnType.getSort()) {

代码示例来源：origin: jpcsp/jpcsp

JumpInsnNode jumpInsn = (JumpInsnNode) nextNextInsn;
boolean doJump = false;
switch (jumpInsn.getOpcode()) {
  case Opcodes.IFEQ:
    if (isFloatValue(value)) {
    method.instructions.set(insn, new JumpInsnNode(Opcodes.GOTO, jumpInsn.label));
  } else {
    method.instructions.remove(insn);
  deleteUpToInsn = jumpInsn.getNext();

代码示例来源：origin: kilim/kilim

void changeLastInsnToGOTO(LabelNode label) {
  setInstruction(endPos, new JumpInsnNode(GOTO, label));
}

代码示例来源：origin: org.ow2.asm/asm-tree

@Override
 public AbstractInsnNode clone(final Map<LabelNode, LabelNode> clonedLabels) {
  return new JumpInsnNode(opcode, clone(label, clonedLabels)).cloneAnnotations(this);
 }
}

代码示例来源：origin: jpcsp/jpcsp

for (ListIterator<?> lit = method.instructions.iterator(); lit.hasNext(); ) {
  AbstractInsnNode insn = (AbstractInsnNode) lit.next();
  if (insn.getType() == JUMP_INSN) {
    if (jumpInsn.getOpcode() == Opcodes.GOTO) {
      AbstractInsnNode next = jumpInsn.getNext();
      while (next != null) {
        if (next == label) {
    } else {
      if (jumpInsn.getOpcode() == Opcodes.GOTO && target != null) {
        switch (target.getOpcode()) {
          case Opcodes.IRETURN:
          case Opcodes.ATHROW:
            method.instructions.set(insn, target.clone(null));

代码示例来源：origin: org.ow2.asm/asm-tree

@Override
public void accept(final MethodVisitor methodVisitor) {
 methodVisitor.visitJumpInsn(opcode, label.getLabel());
 acceptAnnotations(methodVisitor);
}

代码示例来源：origin: EvoSuite/evosuite

/** {@inheritDoc} */
@Override
public List<Mutation> apply(MethodNode mn, String className, String methodName,
    BytecodeInstruction instruction, Frame frame) {
  List<Mutation> mutations = new LinkedList<Mutation>();
  JumpInsnNode node = (JumpInsnNode) instruction.getASMNode();
  LabelNode target = node.label;
  // insert mutation into bytecode with conditional
  JumpInsnNode mutation = new JumpInsnNode(getOpposite(node.getOpcode()), target);
  // insert mutation into pool
  Mutation mutationObject = MutationPool.addMutation(className,
                            methodName,
                            NAME,
                            instruction,
                            mutation,
                            Mutation.getDefaultInfectionDistance());
  mutations.add(mutationObject);
  return mutations;
}

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