org.objectweb.asm.Opcodes# NULL 源码实例Demo

下面列出了org.objectweb.asm.Opcodes# NULL 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： Concurnas 文件： CheckMethodAdapter.java


/**
 * Checks a stack frame value.
 *
 * @param value the value to be checked.
 */
private void checkFrameValue(final Object value) {
  if (value == Opcodes.TOP
      || value == Opcodes.INTEGER
      || value == Opcodes.FLOAT
      || value == Opcodes.LONG
      || value == Opcodes.DOUBLE
      || value == Opcodes.NULL
      || value == Opcodes.UNINITIALIZED_THIS) {
    return;
  } else if (value instanceof String) {
    checkInternalName(version, (String) value, "Invalid stack frame value");
  } else if (value instanceof Label) {
    referencedLabels.add((Label) value);
  } else {
    throw new IllegalArgumentException("Invalid stack frame value: " + value);
  }
}

源代码2 项目： JByteMod-Beta 文件： CheckMethodAdapter.java


/**
 * Checks a stack frame value.
 * 
 * @param value
 *          the value to be checked.
 */
void checkFrameValue(final Object value) {
  if (value == Opcodes.TOP || value == Opcodes.INTEGER || value == Opcodes.FLOAT || value == Opcodes.LONG || value == Opcodes.DOUBLE
      || value == Opcodes.NULL || value == Opcodes.UNINITIALIZED_THIS) {
    return;
  }
  if (value instanceof String) {
    checkInternalName((String) value, "Invalid stack frame value");
    return;
  }
  if (!(value instanceof Label)) {
    throw new IllegalArgumentException("Invalid stack frame value: " + value);
  } else {
    usedLabels.add((Label) value);
  }
}

源代码3 项目： JReFrameworker 文件： CheckMethodAdapter.java


/**
 * Checks a stack frame value.
 *
 * @param value the value to be checked.
 */
private void checkFrameValue(final Object value) {
  if (value == Opcodes.TOP
      || value == Opcodes.INTEGER
      || value == Opcodes.FLOAT
      || value == Opcodes.LONG
      || value == Opcodes.DOUBLE
      || value == Opcodes.NULL
      || value == Opcodes.UNINITIALIZED_THIS) {
    return;
  } else if (value instanceof String) {
    checkInternalName(version, (String) value, "Invalid stack frame value");
  } else if (value instanceof Label) {
    referencedLabels.add((Label) value);
  } else {
    throw new IllegalArgumentException("Invalid stack frame value: " + value);
  }
}

源代码4 项目： JReFrameworker 文件： CheckMethodAdapter.java


/**
 * Checks a stack frame value.
 *
 * @param value the value to be checked.
 */
private void checkFrameValue(final Object value) {
  if (value == Opcodes.TOP
      || value == Opcodes.INTEGER
      || value == Opcodes.FLOAT
      || value == Opcodes.LONG
      || value == Opcodes.DOUBLE
      || value == Opcodes.NULL
      || value == Opcodes.UNINITIALIZED_THIS) {
    return;
  } else if (value instanceof String) {
    checkInternalName(version, (String) value, "Invalid stack frame value");
  } else if (value instanceof Label) {
    referencedLabels.add((Label) value);
  } else {
    throw new IllegalArgumentException("Invalid stack frame value: " + value);
  }
}

源代码5 项目： buck 文件： RegisterSpecAnalyzer.java


@Override
public void visitJumpInsn(int opcode, Label label) {
  // There are only two opcodes for comparing object references.
  if (opcode != Opcodes.IF_ACMPEQ && opcode != Opcodes.IF_ACMPNE) {
    return;
  }
  // There should be two arguments on the stack.
  Preconditions.checkState(adapter.stack.size() >= 2);
  Object val1 = adapter.stack.get(adapter.stack.size() - 2);
  Object val2 = adapter.stack.get(adapter.stack.size() - 1);
  // If either is known null, then the comparison is benign.
  if (val1 == Opcodes.NULL || val2 == Opcodes.NULL) {
    return;
  }
  // If not, they both should be strings (class names).
  Preconditions.checkState(val1 instanceof String);
  Preconditions.checkState(val2 instanceof String);
  // If both are risky, report.
  if (RISKY_TYPES.contains(val1) && RISKY_TYPES.contains(val2)) {
    log.add(
        String.format((Locale) null, "RegisterSpec comparison: %s.%s", className, methodName));
  }
}

源代码6 项目： copper-engine 文件： StackInfo.java


static Type deferLocalDesc(Object object) {
    if (object instanceof String)
        return Type.getObjectType((String) object);
    // TODO: analyze opcode at pos label
    if (object instanceof Label)
        return Type.getType(Object.class);
    int intObject = (Integer) object;
    if (intObject == Opcodes.TOP)
        return null;
    if (intObject == Opcodes.INTEGER)
        return Type.INT_TYPE;
    if (intObject == Opcodes.FLOAT)
        return Type.FLOAT_TYPE;
    if (intObject == Opcodes.LONG)
        return Type.LONG_TYPE;
    if (intObject == Opcodes.DOUBLE)
        return Type.getType(double.class);
    if (intObject == Opcodes.LONG)
        return Type.getType(long.class);
    if (intObject == Opcodes.NULL)
        return Type.getType(Object.class);
    // TODO: defer from containing class
    if (intObject == Opcodes.UNINITIALIZED_THIS)
        return Type.getType(Object.class);
    throw new BuildStackFrameException("Couldnt defer desc for " + object);
}

源代码7 项目： TickDynamic 文件： ASMClassParser.java


protected Object parseFrameType(Map<String, Label> labels, String typeStr) throws Exception {
	if(typeStr.length() == 1) //Base type
	{
		if(typeStr.equals("T"))
			return Opcodes.TOP;
		else if(typeStr.equals("I"))
			return Opcodes.INTEGER;
		else if(typeStr.equals("F"))
			return Opcodes.FLOAT;
		else if(typeStr.equals("D"))
			return Opcodes.DOUBLE;
		else if(typeStr.equals("J"))
			return Opcodes.LONG;
		else if(typeStr.equals("N"))
			return Opcodes.NULL;
		else if(typeStr.equals("U"))
			return Opcodes.UNINITIALIZED_THIS;
		else
			throw new Exception(getCurrentTokenLine() + ": Error while parsing frame type, found no type for " + typeStr);
	}
	
	//Label
	if(typeStr.startsWith("L") && StringUtils.isNumeric(typeStr.substring(1)))
		return getLabel(labels, typeStr);
	
	//Class name
	return typeStr;
}

源代码8 项目： bazel 文件： BytecodeTypeInference.java


/** Convert the type in stack map frame to inference type. */
private InferredType convertTypeInStackMapFrame(Object typeInStackMapFrame) {
  if (typeInStackMapFrame == Opcodes.TOP) {
    return InferredType.TOP;
  } else if (typeInStackMapFrame == Opcodes.INTEGER) {
    return InferredType.INT;
  } else if (typeInStackMapFrame == Opcodes.FLOAT) {
    return InferredType.FLOAT;
  } else if (typeInStackMapFrame == Opcodes.DOUBLE) {
    return InferredType.DOUBLE;
  } else if (typeInStackMapFrame == Opcodes.LONG) {
    return InferredType.LONG;
  } else if (typeInStackMapFrame == Opcodes.NULL) {
    return InferredType.NULL;
  } else if (typeInStackMapFrame == Opcodes.UNINITIALIZED_THIS) {
    return InferredType.UNINITIALIZED_THIS;
  } else if (typeInStackMapFrame instanceof String) {
    String referenceTypeName = (String) typeInStackMapFrame;
    if (referenceTypeName.charAt(0) == '[') {
      return InferredType.create(referenceTypeName);
    } else {
      return InferredType.create('L' + referenceTypeName + ';');
    }
  } else if (typeInStackMapFrame instanceof Label) {
    return InferredType.UNINITIALIZED;
  } else {
    throw new RuntimeException(
        "Cannot reach here. Unhandled element: value="
            + typeInStackMapFrame
            + ", class="
            + typeInStackMapFrame.getClass()
            + ". The current method being desugared is "
            + methodSignature);
  }
}

方法所在类

org.objectweb.asm.Opcodes