Async CTP Support in ReSharper 6.1
This post is about ReSharper 6.1. For other features in ReSharper 6 (both 6.0 and 6.1), please see previous posts introducing ReSharper 6:
- ReSharper 6 EAP is Open; Details on JavaScript Support
- CSS Support in ReSharper 6
- ReSharper 6 Bundles Decompiler, Free Standalone Tool to Follow
- ReSharper 6 Enhances Suggestions with Explanations
- ReSharper 6 Introduces support for JavaScript Unit Testing with QUnit
- ReSharper 6 Enhances Razor Support
- File Header Macros in ReSharper 6
- ReSharper 6.1 EAP Opens: Much more than a bugfix
- ReSharper Settings in 6.1
If there was one feature that has received ample attention in the run-up to ReSharper 6.1, it would have to be the request for async/await support. Despite the fact that this technology has not yet been finalized, community demand as well as the timely release of a preview version of Visual Studio vNext have convinced the ReSharper team to put in the effort to provide quality support for Async CTP.
And we’re not talking just about support for the keywords, either! The following is a list of some of the features that make working with the new features easy and enjoyable.
- Keyword completion — somewhat unsurprisingly,
asyncandawaitare now keywords that ReSharper knows about:
- Smart completion supports
asyncmethods too. In the example below, ReSharper knows that anintreturn type is expected, and offers appropriate suggestions.
- ReSharper enforces naming conventions for
asyncmethods. The “Async” suffix is configurable in the Options dialog.
- When changing your methods to become
async, you can correct the return type of anasyncmethod:
- ReSharper verifies
asyncpropagation, so if you forget to decorate anawait‘ing method withasync, you will be reminded to do this:
This also works in cases where the method is anonymous (i.e., a delegate or lambda expression):
- ReSharper will also complain about the synchronous execution of
asyncmethods that do not contain anyawaitinstructions in them:
- Finally, ReSharper comes with a set of analyses helping you ensure correct usage of
asyncandawaitconstructs. For example, in the screenshot below, ReSharper would complain about the fact thatrefandoutparameters are not permitted in anasyncmethod, as well as the fact thatnullis not awaitable:
Finally, async support permeates various areas of ReSharper infrastructure such as, e.g., its support in SSR (Structured Search & Replace). Overall, the async and await-related features have established themselves in the product, where they will stay and be improved upon until the technology’s eventual release.
