C++ Value::isInt32方法代码示例

NS_IMETHODIMP
AutoMounterSetting::Observe(nsISupports* aSubject,
                            const char* aTopic,
                            const PRUnichar* aData)
{
  if (strcmp(aTopic, MOZSETTINGS_CHANGED) != 0) {
    return NS_OK;
  }

  // Note that this function gets called for any and all settings changes,
  // so we need to carefully check if we have the one we're interested in.
  //
  // The string that we're interested in will be a JSON string that looks like:
  //  {"key":"ums.autoMount","value":true}

  nsCOMPtr<nsIThreadJSContextStack> stack =
    do_GetService("@mozilla.org/js/xpc/ContextStack;1");
  if (!stack) {
    ERR("Failed to get JSContextStack");
    return NS_OK;
  }
  JSContext* cx = stack->GetSafeJSContext();
  if (!cx) {
    ERR("Failed to GetSafeJSContext");
    return NS_OK;
  }
  nsDependentString dataStr(aData);
  JS::Value val;
  if (!JS_ParseJSON(cx, dataStr.get(), dataStr.Length(), &val) ||
      !val.isObject()) {
    return NS_OK;
  }
  JSObject& obj(val.toObject());
  JS::Value key;
  if (!JS_GetProperty(cx, &obj, "key", &key) ||
      !key.isString()) {
    return NS_OK;
  }
  JSBool match;
  if (!JS_StringEqualsAscii(cx, key.toString(), UMS_MODE, &match) ||
      (match != JS_TRUE)) {
    return NS_OK;
  }
  JS::Value value;
  if (!JS_GetProperty(cx, &obj, "value", &value) ||
      !value.isInt32()) {
    return NS_OK;
  }
  int32_t mode = value.toInt32();
  SetAutoMounterMode(mode);

  return NS_OK;
}

bool CoerceDouble(const JS::Value& v, double* d) {
  if (v.isDouble()) {
    *d = v.toDouble();
  } else if (v.isInt32()) {
    *d = double(v.toInt32());
  } else if (v.isUndefined()) {
    *d = 0.0;
  } else {
    return false;
  }
  return true;
}

void
GeolocationSetting::HandleApproxDistanceChange(const JS::Value& aVal)
{
  if (!aVal.isInt32()) {
    return;
  }

  GPSLOG("changing approx distance for %s to %d",
       (mOrigin.IsEmpty() ? "global" : NS_ConvertUTF16toUTF8(mOrigin).get()),
       aVal.toInt32());

  // set the approximate distance
  mDistance = aVal.toInt32();
}

std::string
gjs_debug_value(JS::Value v)
{
    std::ostringstream out;
    if (v.isNull())
        return "null";
    if (v.isUndefined())
        return "undefined";
    if (v.isInt32()) {
        out << v.toInt32();
        return out.str();
    }
    if (v.isDouble()) {
        out << v.toDouble();
        return out.str();
    }
    if (v.isString()) {
        out << gjs_debug_string(v.toString());
        return out.str();
    }
    if (v.isSymbol()) {
        out << gjs_debug_symbol(v.toSymbol());
        return out.str();
    }
    if (v.isObject() && js::IsFunctionObject(&v.toObject())) {
        JSFunction* fun = JS_GetObjectFunction(&v.toObject());
        JSString *display_name = JS_GetFunctionDisplayId(fun);
        if (display_name)
            out << "<function " << gjs_debug_string(display_name);
        else
            out << "<unnamed function";
        out << " at " << fun << '>';
        return out.str();
    }
    if (v.isObject()) {
        out << gjs_debug_object(&v.toObject());
        return out.str();
    }
    if (v.isBoolean())
        return (v.toBoolean() ? "true" : "false");
    if (v.isMagic())
        return "<magic>";
    return "unexpected value";
}

NS_IMETHODIMP
MobileMessageManager::Delete(const JS::Value& aParam, nsIDOMDOMRequest** aRequest)
{
  // We expect Int32, SmsMessage, MmsMessage, Int32[], SmsMessage[], MmsMessage[]
  if (!aParam.isObject() && !aParam.isInt32()) {
    return NS_ERROR_INVALID_ARG;
  }

  nsresult rv;
  nsIScriptContext* sc = GetContextForEventHandlers(&rv);
  AutoPushJSContext cx(sc->GetNativeContext());
  NS_ENSURE_STATE(sc);

  int32_t id, *idArray;
  uint32_t size;

  if (aParam.isInt32()) {
    // Single Integer Message ID
    id = aParam.toInt32();

    size = 1;
    idArray = &id;
  } else if (!JS_IsArrayObject(cx, &aParam.toObject())) {
    // Single SmsMessage/MmsMessage object
    rv = GetMessageId(cx, aParam, id);
    NS_ENSURE_SUCCESS(rv, rv);

    size = 1;
    idArray = &id;
  } else {
    // Int32[], SmsMessage[], or MmsMessage[]
    JS::Rooted<JSObject*> ids(cx, &aParam.toObject());

    JS_ALWAYS_TRUE(JS_GetArrayLength(cx, ids, &size));
    nsAutoArrayPtr<int32_t> idAutoArray(new int32_t[size]);

    JS::Rooted<JS::Value> idJsValue(cx);
    for (uint32_t i = 0; i < size; i++) {
      if (!JS_GetElement(cx, ids, i, &idJsValue)) {
        return NS_ERROR_INVALID_ARG;
      }

      if (idJsValue.isInt32()) {
        idAutoArray[i] = idJsValue.toInt32();
      } else if (idJsValue.isObject()) {
        rv = GetMessageId(cx, idJsValue, id);
        NS_ENSURE_SUCCESS(rv, rv);

        idAutoArray[i] = id;
      }
    }

    idArray = idAutoArray.forget();
  }

  nsCOMPtr<nsIMobileMessageDatabaseService> dbService =
    do_GetService(MOBILE_MESSAGE_DATABASE_SERVICE_CONTRACTID);
  NS_ENSURE_TRUE(dbService, NS_ERROR_FAILURE);

  nsRefPtr<DOMRequest> request = new DOMRequest(GetOwner());
  nsCOMPtr<nsIMobileMessageCallback> msgCallback =
    new MobileMessageCallback(request);

  rv = dbService->DeleteMessage(idArray, size, msgCallback);
  NS_ENSURE_SUCCESS(rv, rv);

  request.forget(aRequest);
  return NS_OK;
}

/*! @brief Fill a bottle with the contents of an object.
 @param[in] jct The %JavaScript engine context.
 @param[in,out] aBottle The bottle to be filled.
 @param[in] theData The value to be sent.
 @param[in] topLevel @c true if this is the outermost list of an object. */
static void
fillBottleFromValue(JSContext *        jct,
                    yarp::os::Bottle & aBottle,
                    JS::Value          theData,
                    const bool         topLevel)
{
    ODL_ENTER(); //####
    ODL_P2("jct = ", jct, "aBottle = ", &aBottle); //####
    ODL_B1("topLevel = ", topLevel); //####
    JS::RootedValue asRootedValue(jct);

    asRootedValue = theData;
    if (theData.isBoolean())
    {
        aBottle.addInt(JS::ToBoolean(asRootedValue) ? 1 : 0);
    }
    else if (theData.isDouble())
    {
        double aValue;

        if (JS::ToNumber(jct, asRootedValue, &aValue))
        {
            aBottle.addDouble(aValue);
        }
    }
    else if (theData.isInt32())
    {
        int32_t aValue;

        if (JS::ToInt32(jct, asRootedValue, &aValue))
        {
            aBottle.addInt(aValue);
        }
    }
    else if (theData.isString())
    {
        JSString * asString = theData.toString();
        char *     asChars = JS_EncodeString(jct, asString);

        aBottle.addString(asChars);
        JS_free(jct, asChars);
    }
    else if (theData.isObject())
    {
        JS::RootedObject asObject(jct);

        if (JS_ValueToObject(jct, asRootedValue, &asObject))
        {
            bool processed = false;
#if (47 <= MOZJS_MAJOR_VERSION)
            bool isArray;
#endif // 47 <= MOZJS_MAJOR_VERSION

#if (47 <= MOZJS_MAJOR_VERSION)
            if (JS_IsArrayObject(jct, asObject, &isArray))
#else // 47 > MOZJS_MAJOR_VERSION
            if (JS_IsArrayObject(jct, asObject))
#endif // 47 > MOZJS_MAJOR_VERSION
            {
                uint32_t arrayLength;

                if (JS_GetArrayLength(jct, asObject, &arrayLength))
                {
                    // Treat as a list
                    if (topLevel)
                    {
                        for (uint32_t ii = 0; arrayLength > ii; ++ii)
                        {
                            JS::RootedValue anElement(jct);

                            if (JS_GetElement(jct, asObject, ii, &anElement))
                            {
                                fillBottleFromValue(jct, aBottle, anElement, false);
                            }
                        }
                    }
                    else
                    {
                        yarp::os::Bottle & innerList(aBottle.addList());

                        for (uint32_t ii = 0; arrayLength > ii; ++ii)
                        {
                            JS::RootedValue anElement(jct);

                            if (JS_GetElement(jct, asObject, ii, &anElement))
                            {
                                fillBottleFromValue(jct, innerList, anElement, false);
                            }
                        }

                    }
                    processed = true;
                }
            }
            if (! processed)
//.........这里部分代码省略.........