Package javassist.bytecode

Examples of javassist.bytecode.SignatureAttribute$Type

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   public static Object getGenericType(Field f)
   {
      CtField fld = JavassistUtil.getCtField(f);
      FieldInfo info = fld.getFieldInfo2();
      SignatureAttribute sig = (SignatureAttribute)info.getAttribute(SignatureAttribute.tag);
      if (sig != null)
      {
         try
         {
            SignatureAttribute.ObjectType type = SignatureAttribute.toFieldSignature(sig.getSignature());
            return createType(f.getType(), type);
         }
         catch (BadBytecode e)
         {
            throw new RuntimeException(e);
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   private static SignatureAttribute.ClassSignature getClassSignature(Class clazz)
   {
      CtClass ctclazz = JavassistUtil.getCtClass(clazz);
      ClassFile cf = ctclazz.getClassFile2();
      SignatureAttribute sig = (SignatureAttribute)cf.getAttribute(SignatureAttribute.tag);
      if (sig != null)
      {
         try
         {
            SignatureAttribute.ClassSignature type = SignatureAttribute.toClassSignature(sig.getSignature());
            return type;
         }
         catch (BadBytecode e)
         {
            throw new RuntimeException(e);
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      return getMethodSignature(info);
   }
  
   private static SignatureAttribute.MethodSignature getMethodSignature(MethodInfo info)
   {
      SignatureAttribute sig = (SignatureAttribute)info.getAttribute(SignatureAttribute.tag);
      if (sig != null)
      {
         try
         {
            SignatureAttribute.MethodSignature type = SignatureAttribute.toMethodSignature(sig.getSignature());
            return type;
         }
         catch (BadBytecode e)
         {
            throw new RuntimeException(e);
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      }
   }

   private void copySignature(MethodInfo src, MethodInfo dest)
   {
      SignatureAttribute attribute = (SignatureAttribute) src.getAttribute(SignatureAttribute.tag);
      if (attribute != null)
      {
         dest.addAttribute(attribute.copy(dest.getConstPool(), new HashMap()));
      }
   }
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   private void copySignature(CtMethod src, CtMethod dest)
   {
      javassist.bytecode.MethodInfo srcInfo = src.getMethodInfo2();
      javassist.bytecode.MethodInfo destInfo = dest.getMethodInfo2();
     
      SignatureAttribute sig = (SignatureAttribute)srcInfo.getAttribute(SignatureAttribute.tag);
      if (sig != null)
      {
         destInfo.addAttribute(sig.copy(destInfo.getConstPool(), new HashMap()));
      }
   }
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   private void copySignature(CtClass src, CtClass dest)
   {
      ClassFile srcFile = src.getClassFile2();
      ClassFile destFile = dest.getClassFile2();
     
      SignatureAttribute sig = (SignatureAttribute)srcFile.getAttribute(SignatureAttribute.tag);
      if (sig != null)
      {
         destFile.addAttribute(sig.copy(destFile.getConstPool(), new HashMap()));
      }
   }
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      setTemporaryWrapperCode(type, wmethod);
      clazz.addMethod(wmethod);
     
      // copy attribute signature
      MethodInfo constructorInfo = constructor.getMethodInfo2();
      SignatureAttribute attribute = (SignatureAttribute) constructorInfo.getAttribute(SignatureAttribute.tag);
      if (attribute != null)
      {
         MethodInfo wrapperInfo = wmethod.getMethodInfo2();
         wrapperInfo.addAttribute(attribute.copy(wrapperInfo.getConstPool(), new HashMap()));
      }
     
      // prepare ForWrapping
      getWrapper().prepareForWrapping(constructor, CONSTRUCTOR_STATUS);
   }
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      CtMethod wmethod = CtNewMethod.make(CtClass.voidType, wrapperName, writeParam, null, "{}", clazz);
      wmethod.setModifiers(mod);
      clazz.addMethod(wmethod);
     
      SignatureAttribute ai = (SignatureAttribute) field.getFieldInfo2().getAttribute(SignatureAttribute.tag);
      if (ai != null)
      {
         MethodInfo wrapperInfo = wmethod.getMethodInfo2();
         SignatureAttribute methodAtt = new SignatureAttribute(wrapperInfo.getConstPool(), "(" + ai.getSignature() + ")V");
         wrapperInfo.addAttribute(methodAtt);
      }
     
      return wmethod;
   }
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    public static void copyMethodAttributes(MethodInfo oldMethod, MethodInfo newMethod) {
        AnnotationsAttribute annotations = (AnnotationsAttribute) oldMethod.getAttribute(AnnotationsAttribute.visibleTag);
        ParameterAnnotationsAttribute pannotations = (ParameterAnnotationsAttribute) oldMethod.getAttribute(ParameterAnnotationsAttribute.visibleTag);
        ExceptionsAttribute exAt = (ExceptionsAttribute) oldMethod.getAttribute(ExceptionsAttribute.tag);
        SignatureAttribute sigAt = (SignatureAttribute) oldMethod.getAttribute(SignatureAttribute.tag);
        if (annotations != null) {
            AttributeInfo newAnnotations = annotations.copy(newMethod.getConstPool(), Collections.EMPTY_MAP);
            newMethod.addAttribute(newAnnotations);
        }
        if (pannotations != null) {
            AttributeInfo newAnnotations = pannotations.copy(newMethod.getConstPool(), Collections.EMPTY_MAP);
            newMethod.addAttribute(newAnnotations);
        }
        if (sigAt != null) {
            AttributeInfo newAnnotations = sigAt.copy(newMethod.getConstPool(), Collections.EMPTY_MAP);
            newMethod.addAttribute(newAnnotations);
        }
        if (exAt != null) {
            AttributeInfo newAnnotations = exAt.copy(newMethod.getConstPool(), Collections.EMPTY_MAP);
            newMethod.addAttribute(newAnnotations);
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        // this will generate the class holding the satic field if is does not
        // already exist. This allows
        // the static field to hold its value accross multiple replacements

        String sig = null;
        SignatureAttribute sat = (SignatureAttribute) m.getAttribute(SignatureAttribute.tag);
        if (sat != null) {
            sig = sat.getSignature();
        }

        String proxyName = StaticFieldClassFactory.getStaticFieldClass(oldClass, m.getName(), m.getDescriptor(), sig);
        try {
            Field fieldFromProxy = loader.loadClass(proxyName).getDeclaredField(m.getName());
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