Rollup of 16 pull requests #81545
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Rollup of 16 pull requests #81545
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This patch adds the `core::stream` submodule and implements `core::stream::Stream` in accordance with RFC2996. Add feedback from @camelid
…res when feature capture_disjoint_fields is enabled
This is a temporary change only, as we wait to resolve dynamic dispatch issues. The `Stream::next` method and corresponding documentation are expected to be fully restored once we have a path to proceed. Ref: rust-lang/rfcs#2996 (comment) update docs
Co-authored-by: Oli Scherer <[email protected]>
Previously, the HTML output format was represented by both `Some(OutputFormat::Html)` and `None` so there's no need to have an optional. Instead, `OutputFormat::Html` is explicitly the default and we no longer have a "tri-state enum".
Replacing with equal number of values does not increase the length of the vec. Reference: https://stackoverflow.com/a/62559271/3990767
This commit makes cfg(version) treat the nightlies for version 1.n.0 as 1.n.0, even though that nightly version might not have all stabilizations and features of the released 1.n.0. This is done for greater convenience for people who want to test a newly stabilized feature on nightly. For users who wish to pin nightlies, this commit adds a -Z assume-incomplete-release option that they can enable if there are any issues due to this change.
parentesized -> parenthesized
Before, it could print this error if no toolchain was configured:
```
error: no default toolchain configured
error: backtrace:
error: stack backtrace:
0: error_chain::backtrace::imp::InternalBacktrace::new
1: rustup::config::Cfg::toolchain_for_dir
2: rustup_init::run_rustup_inner
3: rustup_init::main
4: std::rt::lang_start::{{closure}}
5: main
6: __libc_start_main
7: _start
```
Previously, `downloading_llvm` would check `self.build` while it was still an empty string, and think it was always false. This fixes the check.
This seems right, given that conceptually bools are unsigned, but the implications of this change may have more action at distance that I'm not sure how to exhaustively consider. For instance there are a number of cases where code attaches range metadata if `scalar.is_bool()` holds. Supposedly it would no longer be attached to the `repr(i8)` enums? Though I'm not sure why booleans are being special-cased here in the first place... Fixes rust-lang#80556
Add `core::stream::Stream` [[Tracking issue: rust-lang#79024](rust-lang#79024)] This patch adds the `core::stream` submodule and implements `core::stream::Stream` in accordance with [RFC2996](rust-lang/rfcs#2996). The RFC hasn't been merged yet, but as requested by the libs team in rust-lang/rfcs#2996 (comment) I'm filing this PR to get the ball rolling. ## Documentatation The docs in this PR have been adapted from [`std::iter`](https://doc.rust-lang.org/std/iter/index.html), [`async_std::stream`](https://docs.rs/async-std/1.7.0/async_std/stream/index.html), and [`futures::stream::Stream`](https://docs.rs/futures/0.3.8/futures/stream/trait.Stream.html). Once this PR lands my plan is to follow this up with PRs to add helper methods such as `stream::repeat` which can be used to document more of the concepts that are currently missing. That will allow us to cover concepts such as "infinite streams" and "laziness" in more depth. ## Feature gate The feature gate for `Stream` is `stream_trait`. This matches the `#[lang = "future_trait"]` attribute name. The intention is that only the APIs defined in RFC2996 will use this feature gate, with future additions such as `stream::repeat` using their own feature gates. This is so we can ensure a smooth path towards stabilizing the `Stream` trait without needing to stabilize all the APIs in `core::stream` at once. But also don't start expanding the API until _after_ stabilization, as was the case with `std::future`. __edit:__ the feature gate has been changed to `async_stream` to match the feature gate proposed in the RFC. ## Conclusion This PR introduces `core::stream::{Stream, Next}` and re-exports it from `std` as `std::stream::{Stream, Next}`. Landing `Stream` in the stdlib has been a mult-year process; and it's incredibly exciting for this to finally happen! --- r? `````@KodrAus````` cc/ `````@rust-lang/wg-async-foundations````` `````@rust-lang/libs`````
…=eddyb Consider Scalar to be a bool only if its unsigned This seems right, given that conceptually bools are unsigned, but the implications of this change may have more action at distance that I'm not sure how to exhaustively consider. For instance there are a number of cases where code attaches range metadata if `scalar.is_bool()` holds. Supposedly it would no longer be attached to the `repr(i8)` enums? Though I'm not sure why booleans are being special-cased here in the first place... Fixes rust-lang#80556 cc `@eddyb`
…-ou-se Stabilize raw ref macros This stabilizes `raw_ref_macros` (rust-lang#73394), which is possible now that rust-lang#74355 is fixed. However, as I already said in rust-lang#73394 (comment), I am not particularly happy with the current names of the macros. So I propose we also change them, which means I am proposing to stabilize the following in `core::ptr`: ```rust pub macro const_addr_of($e:expr) { &raw const $e } pub macro mut_addr_of($e:expr) { &raw mut $e } ``` The macro name change means we need another round of FCP. Cc `````@rust-lang/libs````` Fixes rust-lang#73394
… r=m-ou-se Stabilize `unsigned_abs` Resolves rust-lang#74913. This PR stabilizes the `i*::unsigned_abs()` method, which returns the absolute value of an integer _as its unsigned equivalent_. This has the advantage that it does not overflow on `i*::MIN`. I have gone ahead and used this in a couple locations throughout the repository.
…nal, r=GuillaumeGomez rustdoc: Remove unnecessary optional Previously, the HTML output format was represented by both `Some(OutputFormat::Html)` and `None` so there's no need to have an optional. Instead, `OutputFormat::Html` is explicitly the default and we no longer have a "tri-state enum". r? `````@GuillaumeGomez`````
Updated Vec::splice documentation Replacing with equal number of values does not increase the length of the vec. Reference: https://stackoverflow.com/a/62559271/3990767
…anxiyn update rustfmt to v1.4.34 Short summary: Various formatting fixes (several const generic related) and introduction of `imports_granularity` config option Long summary copied from changelog: #### Changed - `merge_imports` configuration has been deprecated in favor of the new `imports_granularity` option. Any existing usage of `merge_imports` will be automatically mapped to the corresponding value on `imports_granularity` with a warning message printed to encourage users to update their config files. #### Added - New `imports_granularity` option has been added which succeeds `merge_imports`. This new option supports several additional variants which allow users to merge imports at different levels (crate or module), and even flatten imports to have a single use statement per item. ([PR rust-lang/rustfmt#4634](rust-lang/rustfmt#4634), [PR rust-lang/rustfmt#4639](rust-lang/rustfmt#4639)) See the section on the configuration site for more information https://rust-lang.github.io/rustfmt/?version=v1.4.33&search=#imports_granularity #### Fixed - Fix erroneous removal of `const` keyword on const trait impl ([rust-lang/rustfmt#4084](rust-lang/rustfmt#4084)) - Fix incorrect span usage wit const generics in supertraits ([rust-lang/rustfmt#4204](rust-lang/rustfmt#4204)) - Use correct span for const generic params ([rust-lang/rustfmt#4263](rust-lang/rustfmt#4263)) - Correct span on const generics to include type bounds ([rust-lang/rustfmt#4310](rust-lang/rustfmt#4310)) - Idempotence issue on blocks containing only empty statements ([rust-lang/rustfmt#4627](rust-lang/rustfmt#4627) and [rust-lang#3868](rust-lang/rustfmt#3868)) - Fix issue with semicolon placement on required functions that have a trailing comment that ends in a line-style comment before the semicolon ([rust-lang/rustfmt#4646](rust-lang/rustfmt#4646)) - Avoid shared interned cfg_if symbol since rustfmt can re-initialize the rustc_ast globals on multiple inputs ([rust-lang/rustfmt#4656](rust-lang/rustfmt#4656)) - Don't insert trailing comma on (base-less) rest in struct literals within macros ([rust-lang/rustfmt#4675](rust-lang/rustfmt#4675))
…r=sanxiyn `fn cold_path` doesn't need to be pub Fixes rust-lang#81429 Note: this PR also fixes a small typo that I found
…c, r=bugadani Add missing variants in match binding cc `````@bugadani````` `````@CraftSpider````` r? `````@camelid`````
Fix typo in pat.rs parentesized -> parenthesized
…ulacrum
Don't print error output from rustup when detecting default build triple
Before, it could print this error if no toolchain was configured:
```
error: no default toolchain configured
error: backtrace:
error: stack backtrace:
0: error_chain::backtrace::imp::InternalBacktrace::new
1: rustup::config::Cfg::toolchain_for_dir
2: rustup_init::run_rustup_inner
3: rustup_init::main
4: std::rt::lang_start::{{closure}}
5: main
6: __libc_start_main
7: _start
```
Don't clone LLVM submodule when download-ci-llvm is set Previously, `downloading_llvm` would check `self.build` while it was still an empty string, and think it was always false. This fixes the check. This addresses the worst part of rust-lang#76653. There are still some large submodules being downloaded (in particular, `rustc-by-example` is 146 MB, and all the submodules combined are 311 MB), but this is a lot better than the whopping 1.4 GB before.
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@bors r+ rollup=never p=16 |
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📌 Commit 31e7634 has been approved by |
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⌛ Testing commit 31e7634 with merge 877286109803b5aa3f979ac0219e2b515d02ba5f... |
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A job failed! Check out the build log: (web) (plain) Click to see the possible cause of the failure (guessed by this bot) |
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💔 Test failed - checks-actions |
bors
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@bors retry |
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☀️ Test successful - checks-actions |
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Jan 30, 2021
Tested on commit rust-lang/rust@7ce1b3b. Direct link to PR: <rust-lang/rust#81545> 💔 miri on windows: test-pass → test-fail (cc @oli-obk @eddyb @RalfJung). 💔 miri on linux: test-pass → test-fail (cc @oli-obk @eddyb @RalfJung).
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Successful merges:
core::stream::Stream#79023 (Addcore::stream::Stream)unsigned_abs#80959 (Stabilizeunsigned_abs)[feature(capture_disjoint_fields)]#81291 (Support FRU pattern with[feature(capture_disjoint_fields)])fn cold_pathdoesn't need to be pub #81505 (fn cold_pathdoesn't need to be pub)Failed merges:
r? @ghost
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