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Implementation of rust-lang/rfcs#2799
The Cargo book can be generated the same way as the other books.
This feature adds `X..`, `..X`, and `..=X` patterns.
Add method Result::into_ok Implementation of rust-lang/rfcs#2799 Tracking issue rust-lang#61695
Introduce `X..`, `..X`, and `..=X` range patterns Tracking issue: rust-lang#67264 Feature gate: `#![feature(half_open_range_patterns)]` --------------------------- In this PR, we introduce range-from (`X..`), range-to (`..X`), and range-to-inclusive (`..=X`) patterns. These correspond to the `RangeFrom`, `RangeTo`, and `RangeToInclusive` expression forms introduced with the same syntaxes. The correspondence is both syntactic and semantic (in the sense that e.g. a `X..` pattern matching on a scrutinee `s` holds exactly when `(X..).contains(&s)` holds). --------------------------- Noteworthy: - The compiler complexity added with this PR is around 10 lines (discounting new tests, which account for the large PR size). - `...X` is accepted syntactically with the same meaning as `..=X`. This is done primarily to simplify and unify the implementation & spec. If-and-when we decide to make `X...Y` a hard error on a new edition, we can do the same for `...X` patterns as well. - `X...` and `X..=` is rejected syntactically just like it is for the expression equivalents. We should perhaps make these into semantic restrictions (cc @petrochenkov). - In HAIR, these half-open ranges are represented by inserting the max/min values for the approprate types. That is, `X..` where `X: u8` would become `X..=u8::MAX` in HAIR (note the `..=` since `RangeFrom` includes the end). - Exhaustive integer / char matching does not (yet) allow for e.g. exhaustive matching on `0usize..` or `..5usize | 5..` (same idea for `isize`). This would be a substantially more invasive change, and could be added in some other PR. - The issues with slice pattern syntax has been resolved as we decided to use `..` to mean a "rest-pattern" and `[xs @ ..]` to bind the rest to a name in a slice pattern. - Like with rust-lang#35712, which provided `X..Y` range patterns, this is not yet backed up by an RFC. I'm providing this experimental implementation now to have something concrete to discuss. I would be happy to provide an RFC for this PR as well as for rust-lang#35712 to finalize and confirm the ideas with the larger community. Closes rust-lang/rfcs#947. --------------------------- r? @varkor cc @matthewjasper @oli-obk I would recommend reviewing this (in particular HAIR-lowering and pattern parsing changes) with whitespace changes ignored.
Unify output of "variant not found" errors Fix rust-lang#49566.
…-Simulacrum Build compiletest with in-tree libtest This updates compiletest to build in `Mode::ToolStd`, using the locally-built crates for `std` and especially `test`. This way we're immune to unstable differences in the bootstrap compiler crates, whether that's a prior-release stage0 or a current release local rebuild. Fixes rust-lang#59264. As a minor cleanup, this also removes the unused `llvm_tools` flag.
remove explicit strip-hidden pass from compiler doc generation `strip-hidden` is now implied by `--document-private-items` with rust-lang#67875, so there's no need to specify it anymore.
Canonicalize rustc_error imports r? @Mark-Simulacrum
…xcrichton Allow specifying LLVM args in target specifications
…ulacrum rustbuild: Cleanup book generation The Cargo book can be generated the same way as the other books.
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@bors r+ p=8 rollup=never |
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📌 Commit bcfb380 has been approved by |
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Rollup of 8 pull requests Successful merges: - #66045 (Add method Result::into_ok) - #67258 (Introduce `X..`, `..X`, and `..=X` range patterns) - #68014 (Unify output of "variant not found" errors) - #68019 (Build compiletest with in-tree libtest) - #68039 (remove explicit strip-hidden pass from compiler doc generation) - #68050 (Canonicalize rustc_error imports) - #68059 (Allow specifying LLVM args in target specifications) - #68075 (rustbuild: Cleanup book generation) Failed merges: - #68089 (Unstabilize `Vec::remove_item`) r? @ghost
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☀️ Test successful - checks-azure |
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📣 Toolstate changed by #68101! Tested on commit 1756313. 💔 clippy-driver on windows: test-pass → build-fail (cc @mcarton @oli-obk @Manishearth @flip1995 @yaahc @phansch @llogiq, @rust-lang/infra). |
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Tested on commit rust-lang/rust@1756313. Direct link to PR: <rust-lang/rust#68101> 💔 clippy-driver on windows: test-pass → build-fail (cc @mcarton @oli-obk @Manishearth @flip1995 @yaahc @phansch @llogiq, @rust-lang/infra). 💔 clippy-driver on linux: test-pass → build-fail (cc @mcarton @oli-obk @Manishearth @flip1995 @yaahc @phansch @llogiq, @rust-lang/infra).
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Successful merges:
X..,..X, and..=Xrange patterns #67258 (IntroduceX..,..X, and..=Xrange patterns)Failed merges:
Vec::remove_item#68089 (UnstabilizeVec::remove_item)r? @ghost