mirrors/arti.git/crates/tor-rtmock, branch derive-traits

Merge branch 'clippy-allow-arc-clone' into 'main'

2022-03-01T20:38:05Z

Disable clippy::clone_on_ref_ptr See merge request tpo/core/arti!352

Bump all crates to 0.1.0

2022-03-01T13:59:34Z

Disable clippy::clone_on_ref_ptr

2022-02-24T18:15:44Z

This lint is IMO inherently ill-conceived. I have looked for the reasons why this might be thought to be a good idea and there were basically two (and they are sort of contradictory): I. "Calling ‘.clone()` on an Rc, Arc, or Weak can obscure the fact that only the pointer is being cloned, not the underlying data." This is the wording from https://rust-lang.github.io/rust-clippy/v0.0.212/#clone_on_ref_ptr It is a bit terse; we are left to infer why it is a bad idea to obscure this fact. It seems to me that if it is bad to obscure some fact, that must be because the fact is a hazard. But why would it be a hazard to not copy the underlying data ? In other languages, faliing to copy the underlying data is a serious correctness hazard. There is a whose class of bugs where things were not copied, and then mutated and/or reused in multiple places in ways that were not what the programmer intended. In my experience, this is a very common bug when writing Python and Javascript. I'm told it's common in golang too. But in Rust this bug is much much harder to write. The data inside an Arc is immutable. To have this bug you'd have use interior mutability - ie mess around with Mutex or RefCell. That provides a good barrier to these kind of accidents. II. "The reason for writing Rc::clone and Arc::clone [is] to make it clear that only the pointer is being cloned, as opposed to the underlying data. The former is always fast, while the latter can be very expensive depending on what is being cloned." This is the reasoning found here https://github.com/rust-lang/rust-clippy/issues/2048 This is saying that *not* using Arc::clone is hazardous. Specifically, that a deep clone is a performance hazard. But for this argument, the lint is precisely backwards. It's linting the "good" case and asking for it to be written in a more explicit way; while the supposedly bad case can be written conveniently. Also, many objects (in our codebase, and in all the libraries we use) that are Clone are in fact simply handles. They contain Arc(s) (or similar) and are cheap to clone. Indeed, that is the usual case. It does not make sense to distinguish in the syntax we use to clone such a handle, whether the handle is a transparent Arc, or an opaque struct containing one or more other handles. Forcing Arc::clone to be written as such makes for code churn when a type is changed from Arc to Something: Clone, or vice versa.

Change deny(clippy::all) to warn(clippy::all).

2022-02-14T14:24:06Z

Closes #338.

Upgrade required version of futures crate to 0.3.14

2022-02-01T14:54:47Z

Earlier versions have a bug in UnboundedReceiver that make our new dirclient tests fail.

Bump the patch version of every crate that changed since 0.0.3

2022-01-31T15:30:52Z

Rename `SpawnBlocking` trait to `BlockOn`.

2022-01-26T19:06:58Z

This avoids a future confusion with the new `SpawnBlocking` trait in async_executors v0.5, and better describes what the trait provides.

Make test_with_all_runtimes cover _all_ the runtimes.

2022-01-26T19:06:58Z

This took some refactoring, so that I wouldn't need to define 9 different versions of the function. It also required that we change the behavior of test_with_all_runtimes slightly, so that it asserts on _any_ failure rather than asserting on most but returning Err() for others. That in turn required changes to a few of its callers. There's probably a better way to do all of this macro business, but this is the best I could find.

Make the native-tls crate optional.

2022-01-26T19:06:58Z

This commit puts the native-tls crate behind a feature. The feature is off-by-default in the tor-rtcompat crate, but can be enabled either from arti or arti-client. There is an included script that I used to test that tor-rtcompat could build and run its tests with all subsets of its features. Closes #300

Bump all crate versions to 0.0.3.

2022-01-11T14:40:32Z