Darttype.element as ClassElement, but element2 was prompted after the upgrade

[xiaocode337317439]

Darttype. element as ClassElement Not sure how to convert to ClassElement after using element2 ?

        final ele = type.element as ClassElement; // type => DartType
        // final ele = type as InterfaceType;
        final toJson = ele.lookUpMethod('toJson', ele.library);
        // final toJson = ele.getMethod("toJson");
        if (toJson == null) {
          value = refer("jsonEncode($displayName)");
        } else {
          value = refer("$displayName?.toJson()");
        }

[srawlins]

CC @scheglov

[scheglov]

InterfaceType.element2 is InterfaceElement, and will be in future version not only ClassElement, but also EnumElement, or MixinElement. Right now both are also ClassElement, but we will separate them in the next breaking changes version. I think you might use InterfaceElement methods, without casting to ClassElement.

[xiaocode337317439]

InterfaceType.element2 is InterfaceElement, and will be in future version not only ClassElement, but also EnumElement, or MixinElement. Right now both are also ClassElement, but we will separate them in the next breaking changes version. I think you might use InterfaceElement methods, without casting to ClassElement.

How should DartType be converted to InterfaceType?

[xiaocode337317439]

InterfaceType.element2 is InterfaceElement, and will be in future version not only ClassElement, but also EnumElement, or MixinElement. Right now both are also ClassElement, but we will separate them in the next breaking changes version. I think you might use InterfaceElement methods, without casting to ClassElement.

How should DartType be converted to InterfaceType?

TypeChecker(List).isExactly((ParameterElement.type as InterfaceElement))

error => type 'ParameterElementImpl' is not a subtype of type 'InterfaceElement' in type cast

[scheglov]

You don't convert, you check if it is InterfaceType, using if (myType is InterfaceType) {...}. It might be something different, e.g. FunctionType.

[xiaocode337317439]

You don't convert, you check if it is InterfaceType, using if (myType is InterfaceType) {...}. It might be something different, e.g. FunctionType.

Thank you for answering