本文整理了Java中javassist.bytecode.Bytecode.addOpcode()方法的一些代码示例，展示了Bytecode.addOpcode()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。Bytecode.addOpcode()方法的具体详情如下：
包路径：javassist.bytecode.Bytecode
类名称：Bytecode
方法名：addOpcode

Bytecode.addOpcode介绍

[英]Appends an 8bit opcode to the end of the bytecode sequence. The current stack depth is updated. max_stack is updated if the current stack depth is the deepest so far.

Note: some instructions such as INVOKEVIRTUAL does not update the current stack depth since the increment depends on the method signature. growStack() must be explicitly called.
[中]将8位操作码追加到字节码序列的末尾。将更新当前堆栈深度。如果当前堆栈深度是迄今为止最深的，则更新max_stack。
注意：某些指令（如INVOKEVIRTUAL）不会更新当前堆栈深度，因为增量取决于方法签名。必须显式调用growStack()。

代码示例

代码示例来源：origin: redisson/redisson

public void addNullIfVoid() {
  if (exprType == VOID) {
    bytecode.addOpcode(ACONST_NULL);
    exprType = CLASS;
    arrayDim = 0;
    className = jvmJavaLangObject;
  }
}

代码示例来源：origin: redisson/redisson

/**
 * Appends DCONST or DCONST_<n>
 *
 * @param d         the pushed double constant.
 */
public void addDconst(double d) {
  if (d == 0.0 || d == 1.0)
    addOpcode(14 + (int)d);             // dconst_<n>
  else
    addLdc2w(d);
}

代码示例来源：origin: redisson/redisson

private void atArrayLength(ASTree expr) throws CompileError {
  if (arrayDim == 0)
    throw new CompileError(".length applied to a non array");
  bytecode.addOpcode(ARRAYLENGTH);
  exprType = INT;
  arrayDim = 0;
}

代码示例来源：origin: redisson/redisson

/**
 * Appends LCONST or LCONST_<n>
 *
 * @param n         the pushed long integer constant.
 */
public void addLconst(long n) {
  if (n == 0 || n == 1)
    addOpcode(9 + (int)n);              // lconst_<n>
  else
    addLdc2w(n);
}

代码示例来源：origin: redisson/redisson

public void doit(JvstCodeGen gen, Bytecode bytecode, ASTList args)
  throws CompileError
{
  bytecode.addOpcode(NEW);
  bytecode.addIndex(newIndex);
  bytecode.addOpcode(DUP);
  gen.atMethodCallCore(newType, MethodInfo.nameInit, args,
             false, true, -1, null);
  gen.setType(newType);
}

代码示例来源：origin: redisson/redisson

private void jsrJmp(Bytecode b) {
  b.addOpcode(Opcode.GOTO);
  jsrList.add(new int[] {b.currentPc(), var});
  b.addIndex(0);
}

代码示例来源：origin: redisson/redisson

/**
 * Appends CHECKCAST.
 *
 * @param classname         a fully-qualified class name.
 */
public void addCheckcast(String classname) {
  addOpcode(CHECKCAST);
  addIndex(constPool.addClassInfo(classname));
}

代码示例来源：origin: redisson/redisson

/**
 * Appends ANEWARRAY.
 *
 * @param classname         the qualified class name of the element type.
 */
public void addAnewarray(String classname) {
  addOpcode(ANEWARRAY);
  addIndex(constPool.addClassInfo(classname));
}

代码示例来源：origin: redisson/redisson

protected void atReturnStmnt(Stmnt st) throws CompileError {
  ASTree result = st.getLeft();
  if (result != null && returnType == CtClass.voidType) {
    compileExpr(result);
    if (is2word(exprType, arrayDim))
      bytecode.addOpcode(POP2);
    else if (exprType != VOID)
      bytecode.addOpcode(POP);
    result = null;
  }
  atReturnStmnt2(result);
}

代码示例来源：origin: redisson/redisson

public void atArrayRead(ASTree array, ASTree index)
  throws CompileError
{
  arrayAccess(array, index);
  bytecode.addOpcode(getArrayReadOp(exprType, arrayDim));
}

代码示例来源：origin: redisson/redisson

/**
 * Appends CHECKCAST.
 *
 * @param c         the type.
 */
public void addCheckcast(CtClass c) {
  addOpcode(CHECKCAST);
  addIndex(constPool.addClassInfo(c));
}

代码示例来源：origin: redisson/redisson

/**
 * Appends INSTANCEOF.
 *
 * @param classname         the class name.
 */
public void addInstanceof(String classname) {
  addOpcode(INSTANCEOF);
  addIndex(constPool.addClassInfo(classname));
}

代码示例来源：origin: redisson/redisson

/**
 * Appends NEW.
 *
 * @param clazz     the class of the created instance.
 */
public void addNew(CtClass clazz) {
  addOpcode(NEW);
  addIndex(constPool.addClassInfo(clazz));
}

代码示例来源：origin: redisson/redisson

static final void storeStack(CtClass[] params, boolean isStaticCall,
    int regno, Bytecode bytecode) {
  storeStack0(0, params.length, params, regno + 1, bytecode);
  if (isStaticCall)
    bytecode.addOpcode(ACONST_NULL);
  bytecode.addAstore(regno);
}

代码示例来源：origin: redisson/redisson

/**
 * Appends FCONST or FCONST_<n>
 *
 * @param f         the pushed float constant.
 */
public void addFconst(float f) {
  if (f == 0.0f || f == 1.0f || f == 2.0f)
    addOpcode(11 + (int)f);             // fconst_<n>
  else
    addLdc(constPool.addFloatInfo(f));
}

代码示例来源：origin: redisson/redisson

/**
 * Appends LDC2_W.  The pushed item is a double value.
 */
public void addLdc2w(double d) {
  addOpcode(LDC2_W);
  addIndex(constPool.addDoubleInfo(d));
}

代码示例来源：origin: redisson/redisson

private void atThrowStmnt(Stmnt st) throws CompileError {
  ASTree e = st.getLeft();
  compileExpr(e);
  if (exprType != CLASS || arrayDim > 0)
    throw new CompileError("bad throw statement");
  bytecode.addOpcode(ATHROW);
  hasReturned = true;
}

代码示例来源：origin: redisson/redisson

/**
 * Appends ICONST and ANEWARRAY.
 *
 * @param clazz     the elememnt type.
 * @param length    the array length.
 */
public void addAnewarray(CtClass clazz, int length) {
  addIconst(length);
  addOpcode(ANEWARRAY);
  addIndex(constPool.addClassInfo(clazz));
}

代码示例来源：origin: redisson/redisson

private static int makeWrapper(Bytecode code, Class type, int regno) {
  int index = FactoryHelper.typeIndex(type);
  String wrapper = FactoryHelper.wrapperTypes[index]; 
  code.addNew(wrapper);
  code.addOpcode(Opcode.DUP);
  addLoad(code, regno, type);
  code.addInvokespecial(wrapper, "<init>",
             FactoryHelper.wrapperDesc[index]);
  return regno + FactoryHelper.dataSize[index];
}

代码示例来源：origin: redisson/redisson

public void doit(JvstCodeGen gen, Bytecode bytecode, ASTList args)
  throws CompileError
{
  if (gen.getMethodArgsLength(args) != 1)
    throw new CompileError(Javac.proceedName
        + "() cannot take more than one parameter "
        + "for cast");
  gen.atMethodArgs(args, new int[1], new int[1], new String[1]);
  bytecode.addOpcode(Opcode.CHECKCAST);
  bytecode.addIndex(index);
  gen.setType(retType);
}