Java Code Examples for org.apache.bcel.classfile.ConstantUtf8#getBytes()

private static ClassSymbol makeSymbol(
    ConstantClass constantClass, ConstantPool constantPool, JavaClass sourceClass) {
  int nameIndex = constantClass.getNameIndex();
  Constant classNameConstant = constantPool.getConstant(nameIndex);
  if (!(classNameConstant instanceof ConstantUtf8)) {
    // This constant_pool entry must be a CONSTANT_Utf8_info
    // as specified https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.1
    throw new ClassFormatException(
        "Failed to lookup ConstantUtf8 constant indexed at "
            + nameIndex
            + ". However, the content is not ConstantUtf8. It is "
            + classNameConstant);
  }
  ConstantUtf8 classNameConstantUtf8 = (ConstantUtf8) classNameConstant;
  // classNameConstantUtf8 has internal form of class names that uses '.' to separate identifiers
  String targetClassNameInternalForm = classNameConstantUtf8.getBytes();
  // Adjust the internal form to comply with binary names defined in JLS 13.1
  String targetClassName = targetClassNameInternalForm.replace('/', '.');
  String superClassName = sourceClass.getSuperclassName();

  // Relationships between superclass and subclass need special validation for 'final' keyword
  boolean referenceIsForInheritance = superClassName.equals(targetClassName);
  if (referenceIsForInheritance) {
    return new SuperClassSymbol(targetClassName);
  }
  return new ClassSymbol(targetClassName);
}
 

@Override
public void visitClassContext(ClassContext classContext) {
    JavaClass jclass = classContext.getJavaClass();

    // We can ignore classes that were compiled for anything
    // less than JDK 1.5. This should avoid lots of unnecessary work
    // when analyzing code for older VM targets.
    if (BCELUtil.preTiger(jclass)) {
        return;
    }

    boolean sawUtilConcurrentLocks = false;
    for (Constant c : jclass.getConstantPool().getConstantPool()) {
        if (c instanceof ConstantMethodref) {
            ConstantMethodref m = (ConstantMethodref) c;
            ConstantClass cl = (ConstantClass) jclass.getConstantPool().getConstant(m.getClassIndex());
            ConstantUtf8 name = (ConstantUtf8) jclass.getConstantPool().getConstant(cl.getNameIndex());
            String nameAsString = name.getBytes();
            if (nameAsString.startsWith("java/util/concurrent/locks")) {
                sawUtilConcurrentLocks = true;
            }

        }
    }
    if (sawUtilConcurrentLocks) {
        super.visitClassContext(classContext);
    }
}
 

public String getClassString()
{
    final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx);
    return cu8.getBytes();
    // ConstantClass c = (ConstantClass)getConstantPool().getConstant(idx);
    // ConstantUtf8 utf8 =
    // (ConstantUtf8)getConstantPool().getConstant(c.getNameIndex());
    // return utf8.getBytes();
}
 

public String getValueString()
{
    if (super.getElementValueType() != STRING) {
        throw new IllegalStateException(
                "Dont call getValueString() on a non STRING ElementValue");
    }
    final ConstantUtf8 c = (ConstantUtf8) getConstantPool().getConstant(idx);
    return c.getBytes();
}
 

@Override
public String stringifyValue()
{
    switch (super.getElementValueType())
    {
    case PRIMITIVE_INT:
        final ConstantInteger c = (ConstantInteger) getConstantPool().getConstant(idx);
        return Integer.toString(c.getBytes());
    case PRIMITIVE_LONG:
        final ConstantLong j = (ConstantLong) getConstantPool().getConstant(idx);
        return Long.toString(j.getBytes());
    case PRIMITIVE_DOUBLE:
        final ConstantDouble d = (ConstantDouble) getConstantPool().getConstant(idx);
        return Double.toString(d.getBytes());
    case PRIMITIVE_FLOAT:
        final ConstantFloat f = (ConstantFloat) getConstantPool().getConstant(idx);
        return Float.toString(f.getBytes());
    case PRIMITIVE_SHORT:
        final ConstantInteger s = (ConstantInteger) getConstantPool().getConstant(idx);
        return Integer.toString(s.getBytes());
    case PRIMITIVE_BYTE:
        final ConstantInteger b = (ConstantInteger) getConstantPool().getConstant(idx);
        return Integer.toString(b.getBytes());
    case PRIMITIVE_CHAR:
        final ConstantInteger ch = (ConstantInteger) getConstantPool().getConstant(idx);
        return Integer.toString(ch.getBytes());
    case PRIMITIVE_BOOLEAN:
        final ConstantInteger bo = (ConstantInteger) getConstantPool().getConstant(idx);
        if (bo.getBytes() == 0) {
            return "false";
        }
        return "true";
    case STRING:
        final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx);
        return cu8.getBytes();
    default:
        throw new IllegalStateException(
            "SimpleElementValueGen class does not know how to stringify type " + super.getElementValueType());
    }
}
 

@Override
public String stringifyValue()
{
    final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(valueIdx);
    return cu8.getBytes();
    // ConstantString cu8 =
    // (ConstantString)getConstantPool().getConstant(valueIdx);
    // return
    // ((ConstantUtf8)getConstantPool().getConstant(cu8.getStringIndex())).getBytes();
}
 

protected String getStringFromIndex(int i) {
    ConstantUtf8 name = (ConstantUtf8) constantPool.getConstant(i);
    return name.getBytes();
}
 

private String getStringFromIndex(DismantleBytecode dbc, int i) {
    ConstantUtf8 name = (ConstantUtf8) dbc.getConstantPool().getConstant(i);
    return name.getBytes();
}
 

public final String getTypeSignature() {
    // ConstantClass c = (ConstantClass)cpool.getConstant(typeIndex);
    final ConstantUtf8 utf8 = (ConstantUtf8) cpool
            .getConstant(typeIndex/* c.getNameIndex() */);
    return utf8.getBytes();
}