javassist.bytecode.Bytecode.addInvokevirtual()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中javassist.bytecode.Bytecode.addInvokevirtual()方法的一些代码示例，展示了Bytecode.addInvokevirtual()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.addInvokevirtual()方法的具体详情如下：
包路径：javassist.bytecode.Bytecode
类名称：Bytecode
方法名：addInvokevirtual

Bytecode.addInvokevirtual介绍

[英]Appends INVOKEVIRTUAL.

The specified method must not be an inherited method. It must be directly declared in the class specified by clazz.
[中]

代码示例

代码示例来源：origin: redisson/redisson

/**
 * Appends INVOKEVIRTUAL.
 *
 * <p>The specified method must not be an inherited method.
 * It must be directly declared in the class specified
 * in <code>clazz</code>.
 *
 * @param clazz     the target class.
 * @param name      the method name
 * @param returnType        the return type.
 * @param paramTypes        the parameter types.
 */
public void addInvokevirtual(CtClass clazz, String name,
               CtClass returnType, CtClass[] paramTypes) {
  String desc = Descriptor.ofMethod(returnType, paramTypes);
  addInvokevirtual(clazz, name, desc);
}

代码示例来源：origin: redisson/redisson

/**
 * Appends INVOKEVIRTUAL.
 *
 * <p>The specified method must not be an inherited method.
 * It must be directly declared in the class specified
 * in <code>clazz</code>.
 *
 * @param clazz     the target class.
 * @param name      the method name
 * @param desc      the descriptor of the method signature.
 *
 * @see Descriptor#ofMethod(CtClass,CtClass[])
 */
public void addInvokevirtual(CtClass clazz, String name, String desc) {
  addInvokevirtual(constPool.addClassInfo(clazz), name, desc);
}

代码示例来源：origin: redisson/redisson

/**
 * Appends INVOKEVIRTUAL.
 *
 * <p>The specified method must not be an inherited method.
 * It must be directly declared in the class specified
 * in <code>classname</code>.
 *
 * @param classname the fully-qualified class name.
 * @param name      the method name
 * @param desc      the descriptor of the method signature.
 *
 * @see Descriptor#ofMethod(CtClass,CtClass[])
 */
public void addInvokevirtual(String classname, String name, String desc) {
  addInvokevirtual(constPool.addClassInfo(classname), name, desc);
}

代码示例来源：origin: org.javassist/javassist

/**
 * Appends INVOKEVIRTUAL.
 *
 * <p>The specified method must not be an inherited method.
 * It must be directly declared in the class specified
 * in <code>clazz</code>.
 *
 * @param clazz     the target class.
 * @param name      the method name
 * @param desc      the descriptor of the method signature.
 *
 * @see Descriptor#ofMethod(CtClass,CtClass[])
 */
public void addInvokevirtual(CtClass clazz, String name, String desc) {
  addInvokevirtual(constPool.addClassInfo(clazz), name, desc);
}

代码示例来源：origin: org.javassist/javassist

/**
 * Appends INVOKEVIRTUAL.
 *
 * <p>The specified method must not be an inherited method.
 * It must be directly declared in the class specified
 * in <code>classname</code>.
 *
 * @param classname the fully-qualified class name.
 * @param name      the method name
 * @param desc      the descriptor of the method signature.
 *
 * @see Descriptor#ofMethod(CtClass,CtClass[])
 */
public void addInvokevirtual(String classname, String name, String desc) {
  addInvokevirtual(constPool.addClassInfo(classname), name, desc);
}

代码示例来源：origin: org.javassist/javassist

/**
 * Appends INVOKEVIRTUAL.
 *
 * <p>The specified method must not be an inherited method.
 * It must be directly declared in the class specified
 * in <code>clazz</code>.
 *
 * @param clazz     the target class.
 * @param name      the method name
 * @param returnType        the return type.
 * @param paramTypes        the parameter types.
 */
public void addInvokevirtual(CtClass clazz, String name,
               CtClass returnType, CtClass[] paramTypes) {
  String desc = Descriptor.ofMethod(returnType, paramTypes);
  addInvokevirtual(clazz, name, desc);
}

代码示例来源：origin: redisson/redisson

/**
   * Appends instructions for executing
   * <code>java.lang.System.println(<i>message</i>)</code>.
   *
   * @param message           printed message.
   */
  public void addPrintln(String message) {
    addGetstatic("java.lang.System", "err", "Ljava/io/PrintStream;");
    addLdc(message);
    addInvokevirtual("java.io.PrintStream",
             "println", "(Ljava/lang/String;)V");
  }
}

代码示例来源：origin: hibernate/hibernate-orm

private void addUnwrapper(Bytecode code, Class type) {
  final int index = FactoryHelper.typeIndex( type );
  final String wrapperType = FactoryHelper.wrapperTypes[index];
  // checkcast
  code.addCheckcast( wrapperType );
  // invokevirtual
  code.addInvokevirtual( wrapperType, FactoryHelper.unwarpMethods[index], FactoryHelper.unwrapDesc[index] );
}

代码示例来源：origin: redisson/redisson

private static void addUnwrapper(Bytecode code, Class type) {
  if (type.isPrimitive()) {
    if (type == Void.TYPE)
      code.addOpcode(Opcode.POP);
    else {
      int index = FactoryHelper.typeIndex(type);
      String wrapper = FactoryHelper.wrapperTypes[index];
      code.addCheckcast(wrapper);
      code.addInvokevirtual(wrapper,
                 FactoryHelper.unwarpMethods[index],
                 FactoryHelper.unwrapDesc[index]);
    }
  }
  else       
    code.addCheckcast(type.getName());
}

代码示例来源：origin: org.javassist/javassist

/**
   * Appends instructions for executing
   * <code>java.lang.System.println(<i>message</i>)</code>.
   *
   * @param message           printed message.
   */
  public void addPrintln(String message) {
    addGetstatic("java.lang.System", "err", "Ljava/io/PrintStream;");
    addLdc(message);
    addInvokevirtual("java.io.PrintStream",
             "println", "(Ljava/lang/String;)V");
  }
}

代码示例来源：origin: redisson/redisson

private void atStringPlusEq(Expr expr, int type, int dim, String cname,
              ASTree right)
  throws CompileError
{
  if (!jvmJavaLangString.equals(cname))
    badAssign(expr);
  convToString(type, dim);    // the value might be null.
  right.accept(this);
  convToString(exprType, arrayDim);
  bytecode.addInvokevirtual(javaLangString, "concat",
              "(Ljava/lang/String;)Ljava/lang/String;");
  exprType = CLASS;
  arrayDim = 0;
  className = jvmJavaLangString;
}

代码示例来源：origin: org.javassist/javassist

private static void addUnwrapper(Bytecode code, Class<?> type) {
  if (type.isPrimitive()) {
    if (type == Void.TYPE)
      code.addOpcode(Opcode.POP);
    else {
      int index = FactoryHelper.typeIndex(type);
      String wrapper = FactoryHelper.wrapperTypes[index];
      code.addCheckcast(wrapper);
      code.addInvokevirtual(wrapper,
                 FactoryHelper.unwarpMethods[index],
                 FactoryHelper.unwrapDesc[index]);
    }
  }
  else       
    code.addCheckcast(type.getName());
}

代码示例来源：origin: org.javassist/javassist

private void atStringPlusEq(Expr expr, int type, int dim, String cname,
              ASTree right)
  throws CompileError
{
  if (!jvmJavaLangString.equals(cname))
    badAssign(expr);
  convToString(type, dim);    // the value might be null.
  right.accept(this);
  convToString(exprType, arrayDim);
  bytecode.addInvokevirtual(javaLangString, "concat",
              "(Ljava/lang/String;)Ljava/lang/String;");
  exprType = CLASS;
  arrayDim = 0;
  className = jvmJavaLangString;
}

代码示例来源：origin: redisson/redisson

protected void atCflow(ASTList cname) throws CompileError {
  StringBuffer sbuf = new StringBuffer();
  if (cname == null || cname.tail() != null)
    throw new CompileError("bad " + cflowName);
  makeCflowName(sbuf, cname.head());
  String name = sbuf.toString();
  Object[] names = resolver.getClassPool().lookupCflow(name);
  if (names == null)
    throw new CompileError("no such " + cflowName + ": " + name);
  bytecode.addGetstatic((String)names[0], (String)names[1],
             "Ljavassist/runtime/Cflow;");
  bytecode.addInvokevirtual("javassist.runtime.Cflow",
               "value", "()I");
  exprType = INT;
  arrayDim = 0;
  className = null;
}

代码示例来源：origin: org.javassist/javassist

protected void atCflow(ASTList cname) throws CompileError {
  StringBuffer sbuf = new StringBuffer();
  if (cname == null || cname.tail() != null)
    throw new CompileError("bad " + cflowName);
  makeCflowName(sbuf, cname.head());
  String name = sbuf.toString();
  Object[] names = resolver.getClassPool().lookupCflow(name);
  if (names == null)
    throw new CompileError("no such " + cflowName + ": " + name);
  bytecode.addGetstatic((String)names[0], (String)names[1],
             "Ljavassist/runtime/Cflow;");
  bytecode.addInvokevirtual("javassist.runtime.Cflow",
               "value", "()I");
  exprType = INT;
  arrayDim = 0;
  className = null;
}

代码示例来源：origin: redisson/redisson

private void atStringConcatExpr(Expr expr, int type1, int dim1,
                String cname1) throws CompileError
{
  int type2 = exprType;
  int dim2 = arrayDim;
  boolean type2Is2 = is2word(type2, dim2);
  boolean type2IsString
    = (type2 == CLASS && jvmJavaLangString.equals(className));
  if (type2Is2)
    convToString(type2, dim2);
  if (is2word(type1, dim1)) {
    bytecode.addOpcode(DUP_X2);
    bytecode.addOpcode(POP);
  }
  else
    bytecode.addOpcode(SWAP);
  // even if type1 is String, the left operand might be null.
  convToString(type1, dim1);
  bytecode.addOpcode(SWAP);
  if (!type2Is2 && !type2IsString)
    convToString(type2, dim2);
  bytecode.addInvokevirtual(javaLangString, "concat",
              "(Ljava/lang/String;)Ljava/lang/String;");
  exprType = CLASS;
  arrayDim = 0;
  className = jvmJavaLangString;
}

代码示例来源：origin: redisson/redisson

private static void compileReturn(Bytecode code, CtClass type) {
    if (type.isPrimitive()) {
      CtPrimitiveType pt = (CtPrimitiveType)type;
      if (pt != CtClass.voidType) {
        String wrapper = pt.getWrapperName();
        code.addCheckcast(wrapper);
        code.addInvokevirtual(wrapper, pt.getGetMethodName(),
                   pt.getGetMethodDescriptor());
      }

      code.addOpcode(pt.getReturnOp());
    }
    else {
      code.addCheckcast(type);
      code.addOpcode(Bytecode.ARETURN);
    }
  }
}

代码示例来源：origin: redisson/redisson

protected void compileUnwrapValue(CtClass type, Bytecode code)
  throws CompileError
{
  if (type == CtClass.voidType) {
    addNullIfVoid();
    return;
  }
  if (exprType == VOID)
    throw new CompileError("invalid type for " + returnCastName);
  if (type instanceof CtPrimitiveType) {
    CtPrimitiveType pt = (CtPrimitiveType)type;
    // pt is not voidType.
    String wrapper = pt.getWrapperName();
    code.addCheckcast(wrapper);
    code.addInvokevirtual(wrapper, pt.getGetMethodName(),
               pt.getGetMethodDescriptor());
    setType(type);
  }
  else {
    code.addCheckcast(type);
    setType(type);
  }
}

代码示例来源：origin: org.javassist/javassist

private static void compileReturn(Bytecode code, CtClass type) {
    if (type.isPrimitive()) {
      CtPrimitiveType pt = (CtPrimitiveType)type;
      if (pt != CtClass.voidType) {
        String wrapper = pt.getWrapperName();
        code.addCheckcast(wrapper);
        code.addInvokevirtual(wrapper, pt.getGetMethodName(),
                   pt.getGetMethodDescriptor());
      }

      code.addOpcode(pt.getReturnOp());
    }
    else {
      code.addCheckcast(type);
      code.addOpcode(Bytecode.ARETURN);
    }
  }
}

代码示例来源：origin: org.javassist/javassist

protected void compileUnwrapValue(CtClass type, Bytecode code)
  throws CompileError
{
  if (type == CtClass.voidType) {
    addNullIfVoid();
    return;
  }
  if (exprType == VOID)
    throw new CompileError("invalid type for " + returnCastName);
  if (type instanceof CtPrimitiveType) {
    CtPrimitiveType pt = (CtPrimitiveType)type;
    // pt is not voidType.
    String wrapper = pt.getWrapperName();
    code.addCheckcast(wrapper);
    code.addInvokevirtual(wrapper, pt.getGetMethodName(),
               pt.getGetMethodDescriptor());
    setType(type);
  }
  else {
    code.addCheckcast(type);
    setType(type);
  }
}

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