int64_t convertDynamicIfIntegral(const folly::dynamic& val) {
  if (val.isInt()) {
    return val.getInt();
  }
  double dbl = val.getDouble();
  int64_t result = static_cast<int64_t>(dbl);
  if (dbl != result) {
    throwNewJavaException(
      exceptions::gUnexpectedNativeTypeExceptionClass,
      "Tried to read an int, but got a non-integral double: %f", dbl);
  }
  return result;
}
示例#2
0
JSValueRef Value::fromDynamicInner(JSContextRef ctx, const folly::dynamic& obj) {
  switch (obj.type()) {
    // For primitive types (and strings), just create and return an equivalent JSValue
    case folly::dynamic::Type::NULLT:
      return JSC_JSValueMakeNull(ctx);

    case folly::dynamic::Type::BOOL:
      return JSC_JSValueMakeBoolean(ctx, obj.getBool());

    case folly::dynamic::Type::DOUBLE:
      return JSC_JSValueMakeNumber(ctx, obj.getDouble());

    case folly::dynamic::Type::INT64:
      return JSC_JSValueMakeNumber(ctx, obj.asDouble());

    case folly::dynamic::Type::STRING:
      return JSC_JSValueMakeString(ctx, String(ctx, obj.getString().c_str()));

    case folly::dynamic::Type::ARRAY: {
      // Collect JSValue for every element in the array
      JSValueRef vals[obj.size()];
      for (size_t i = 0; i < obj.size(); ++i) {
        vals[i] = fromDynamicInner(ctx, obj[i]);
      }
      // Create a JSArray with the values
      JSValueRef arr = JSC_JSObjectMakeArray(ctx, obj.size(), vals, nullptr);
      return arr;
    }

    case folly::dynamic::Type::OBJECT: {
      // Create an empty object
      JSObjectRef jsObj = JSC_JSObjectMake(ctx, nullptr, nullptr);
      // Create a JSValue for each of the object's children and set them in the object
      for (auto it = obj.items().begin(); it != obj.items().end(); ++it) {
        JSC_JSObjectSetProperty(
          ctx,
          jsObj,
          String(ctx, it->first.asString().c_str()),
          fromDynamicInner(ctx, it->second),
          kJSPropertyAttributeNone,
          nullptr);
      }
      return jsObj;
    }
    default:
      // Assert not reached
      LOG(FATAL) << "Trying to convert a folly object of unsupported type.";
      return JSC_JSValueMakeNull(ctx);
  }
}