Examples of org.apache.bcel.classfile.ConstantClass

org.apache.bcel.classfile.ConstantClass
This class is derived from the abstract Constant class and represents a reference to a (external) class. @version $Id: ConstantClass.java 386056 2006-03-15 11:31:56Z tcurdt $ @author M. Dahm @see Constant

      if (!validClassMethodName(name)){
        throw new ClassConstraintException("Invalid (non-interface) method name '"+name+"' referenced by '"+tostring(obj)+"'.");
      }


      int class_index = obj.getClassIndex();
      ConstantClass cc = (ConstantClass) (cp.getConstant(class_index));
      String className = ((ConstantUtf8) (cp.getConstant(cc.getNameIndex()))).getBytes(); // Class Name in internal form
      if (! validClassName(className)){
        throw new ClassConstraintException("Illegal class name '"+className+"' used by '"+tostring(obj)+"'.");
      }


      String sig  = ((ConstantUtf8) (cp.getConstant(cnat.getSignatureIndex()))).getBytes(); // Field or Method signature(=descriptor)

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      if (!validInterfaceMethodName(name)){
        throw new ClassConstraintException("Invalid (interface) method name '"+name+"' referenced by '"+tostring(obj)+"'.");
      }


      int class_index = obj.getClassIndex();
      ConstantClass cc = (ConstantClass) (cp.getConstant(class_index));
      String className = ((ConstantUtf8) (cp.getConstant(cc.getNameIndex()))).getBytes(); // Class Name in internal form
      if (! validClassName(className)){
        throw new ClassConstraintException("Illegal class name '"+className+"' used by '"+tostring(obj)+"'.");
      }


      String sig  = ((ConstantUtf8) (cp.getConstant(cnat.getSignatureIndex()))).getBytes(); // Field or Method signature(=descriptor)

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      CodeException[] exc_table = obj.getExceptionTable();
      for (int i=0; i<exc_table.length; i++){
        int exc_index = exc_table[i].getCatchType();
        if (exc_index != 0){ // if 0, it catches all Throwables
          checkIndex(obj, exc_index, CONST_Class);
          ConstantClass cc = (ConstantClass) (cp.getConstant(exc_index));
          checkIndex(cc, cc.getNameIndex(), CONST_Utf8); // cannot be sure this ConstantClass has already been visited (checked)!
          String cname = ((ConstantUtf8) cp.getConstant(cc.getNameIndex())).getBytes().replace('/','.');


          Verifier v = VerifierFactory.getVerifier(cname);
          VerificationResult vr = v.doPass1();


          if (vr != VerificationResult.VR_OK){

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      int[] exc_indices = obj.getExceptionIndexTable();


      for (int i=0; i<exc_indices.length; i++){
        checkIndex(obj, exc_indices[i], CONST_Class);


        ConstantClass cc = (ConstantClass) (cp.getConstant(exc_indices[i]));
        checkIndex(cc, cc.getNameIndex(), CONST_Utf8); // cannot be sure this ConstantClass has already been visited (checked)!
        String cname = ((ConstantUtf8) cp.getConstant(cc.getNameIndex())).getBytes().replace('/','.'); //convert internal notation on-the-fly to external notation


        Verifier v = VerifierFactory.getVerifier(cname);
        VerificationResult vr = v.doPass1();


        if (vr != VerificationResult.VR_OK){

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                        LDC ldc = (LDC) prevIns;
                        Type t = ldc.getType(methodGen.getConstantPool());
                        if (t.getSignature().equals("Ljava/lang/Class;")) {
                            Object value = ldc.getValue(methodGen.getConstantPool());
                            if (value instanceof ConstantClass) {
                                ConstantClass v = (ConstantClass) value;
                                initializationOf = ClassName.toSignature(v.getBytes(javaClass.getConstantPool()));
                                foundDeadClassInitialization = true;
                            } else if (value instanceof ObjectType) {
                                ObjectType v = (ObjectType) value;
                                initializationOf = ClassName.toSignature(v.getClassName());
                                foundDeadClassInitialization = true;
                            } else {
                                AnalysisContext.logError("LDC loaded " + value + "at " + location.getHandle().getPosition() + " in " + classContext.getFullyQualifiedMethodName(method));
                            }

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            return it;
        case Constants.ITEM_InitObject:
            return Item.typeOnly("Ljava/lang/Object;");
        case Constants.ITEM_Object:
            int index = t.getIndex();
            ConstantClass c = (ConstantClass) t.getConstantPool().getConstant(index);
            String name = c.getBytes(t.getConstantPool());
            if (name.charAt(0) != '[') {
                name = "L" + name + ";";
            }
            return Item.typeOnly(name);
        default:

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    }


    public void setupVisitorForClass(JavaClass obj) {
        constantPool = obj.getConstantPool();
        thisClass = obj;
        ConstantClass c = (ConstantClass) constantPool.getConstant(obj.getClassNameIndex());
        className = getStringFromIndex(c.getNameIndex());
        dottedClassName = className.replace('/', '.');
        packageName = obj.getPackageName();
        sourceFile = obj.getSourceFileName();
        dottedSuperclassName = obj.getSuperclassName();
        superclassName = dottedSuperclassName.replace('.', '/');

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            if (a instanceof InnerClasses) {
                for (InnerClass ic : ((InnerClasses) a).getInnerClasses()) {
                    if (obj.getClassNameIndex() == ic.getInnerClassIndex()) {
                        // System.out.println("Outer class is " +
                        // ic.getOuterClassIndex());
                        ConstantClass oc = (ConstantClass) obj.getConstantPool().getConstant(ic.getOuterClassIndex());
                        String ocName = oc.getBytes(obj.getConstantPool());
                        return Repository.lookupClass(ocName);
                    }
                }
            }
        }

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                            branchFallThrough = i;
                            break;
                        case M_CP:
                            constantRefOperand = getConstantPool().getConstant(v);
                            if (constantRefOperand instanceof ConstantClass) {
                                ConstantClass clazz = (ConstantClass) constantRefOperand;
                                classConstantOperand = getStringFromIndex(clazz.getNameIndex());
                                referencedClass = DescriptorFactory.createClassDescriptor(classConstantOperand);


                            } else if (constantRefOperand instanceof ConstantInteger) {
                                intConstant = ((ConstantInteger) constantRefOperand).getBytes();
                            } else if (constantRefOperand instanceof ConstantLong) {
                                longConstant = ((ConstantLong) constantRefOperand).getBytes();
                            } else if (constantRefOperand instanceof ConstantFloat) {
                                floatConstant = ((ConstantFloat) constantRefOperand).getBytes();
                            } else if (constantRefOperand instanceof ConstantDouble) {
                                doubleConstant = ((ConstantDouble) constantRefOperand).getBytes();
                            } else if (constantRefOperand instanceof ConstantString) {
                                int s = ((ConstantString) constantRefOperand).getStringIndex();


                                stringConstantOperand = getStringFromIndex(s);
                            } else if (constantRefOperand instanceof ConstantCP) {
                                ConstantCP cp = (ConstantCP) constantRefOperand;
                                ConstantClass clazz = (ConstantClass) getConstantPool().getConstant(cp.getClassIndex());
                                classConstantOperand = getStringFromIndex(clazz.getNameIndex());
                                referencedClass = DescriptorFactory.createClassDescriptor(classConstantOperand);
                                referencedXClass = null;
                                ConstantNameAndType sig = (ConstantNameAndType) getConstantPool().getConstant(
                                        cp.getNameAndTypeIndex());
                                nameConstantOperand = getStringFromIndex(sig.getNameIndex());

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                        implicitNullCheckForEquals = true;
                        Code code = method.getCode();
                        ConstantPool cp = jclass.getConstantPool();
                        byte codeBytes[] = code.getCode();
                        for (CodeException e : code.getExceptionTable()) {
                            ConstantClass cl = (ConstantClass) cp.getConstant(e.getCatchType());
                            int endPC = e.getEndPC();
                            int startPC = e.getStartPC();
                            int handlerPC = e.getHandlerPC();
                            if (startPC == 0 && endPC + 1 == handlerPC && handlerPC == codeBytes.length - 3
                                    && (codeBytes[handlerPC + 1] & 0xff) == Constants.ICONST_0
                                    && (codeBytes[handlerPC + 2] & 0xff) == Constants.IRETURN
                                    && FindNullDeref.catchTypesForNull.contains(cl.getBytes(cp))) {
                                // equals method body contained in try clause
                                return;
                            }
                        }
                        typeQualifierAnnotation = TypeQualifierAnnotation.getValue(nonnullTypeQualifierValue, When.MAYBE);

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