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891 Commits

Author SHA1 Message Date
reez12g
a1999b76aa Mark ignore(illustrative) on docs in compiler/rustc_ast_lowering/src/expr.rs 2022-09-29 16:49:13 +09:00
reez12g
9a4c5abe45 Remove from compiler/ crates 2022-09-29 16:49:04 +09:00
Camille GILLOT
337a73da6e Do not overwrite binders for another HirId. 2022-09-27 18:58:37 +02:00
Pietro Albini
3975d55d98
remove cfg(bootstrap) 2022-09-26 10:14:45 +02:00
Michael Goulet
e99f6fee44 Only lower async fn body if it actually has a body 2022-09-25 23:03:15 +00:00
Takayuki Maeda
8fe936099a separate definitions and HIR owners 
fix a ui test

use `into`

fix clippy ui test

fix a run-make-fulldeps test

implement `IntoQueryParam<DefId>` for `OwnerId`

use `OwnerId` for more queries

change the type of `ParentOwnerIterator::Item` to `(OwnerId, OwnerNode)`
 2022-09-24 23:21:19 +09:00
bors
4d44e09cb1 Auto merge of #102165 - matthiaskrgr:rollup-n5oquhe, r=matthiaskrgr 
Rollup of 8 pull requests

Successful merges:

 - #100734 (Split out async_fn_in_trait into a separate feature)
 - #101664 (Note if mismatched types have a similar name)
 - #101815 (Migrated the rustc_passes annotation without effect diagnostic infrastructure)
 - #102042 (Distribute rust-docs-json via rustup.)
 - #102066 (rustdoc: remove unnecessary `max-width` on headers)
 - #102095 (Deduplicate two functions that would soon have been three)
 - #102104 (Set 'exec-env:RUST_BACKTRACE=0' in const-eval-select tests)
 - #102112 (Allow full relro on powerpc64-unknown-linux-gnu)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-09-23 09:33:23 +00:00
khyperia
9a206a78eb Improve the help message for an invalid calling convention 2022-09-22 22:18:30 +02:00
Dan Johnson
d0a07495be Split out async_fn_in_trait into a separate feature 
PR #101224 added support for async fn in trait desuraging behind the
return_position_impl_trait_in_trait feature.

Split this out so that it's behind its own feature gate, since async fn
in trait doesn't need to follow the same stabilization schedule.
 2022-09-21 19:26:23 -07:00
Jhonny Bill Mena
e52e2344dc FIX - adopt new Diagnostic naming in newly migrated modules 
FIX - ambiguous Diagnostic link in docs

UPDATE - rename diagnostic_items to IntoDiagnostic and AddToDiagnostic

[Gardening] FIX - formatting via `x fmt`

FIX - rebase conflicts. NOTE: Confirm wheather or not we want to handle TargetDataLayoutErrorsWrapper this way

DELETE - unneeded allow attributes in Handler method

FIX - broken test

FIX - Rebase conflict

UPDATE - rename residual _SessionDiagnostic and fix LintDiag link
 2022-09-21 11:43:22 -04:00
Jhonny Bill Mena
5f91719f75 UPDATE - rename SessionSubdiagnostic macro to Subdiagnostic 
Also renames:
- sym::AddSubdiagnostic to sym:: Subdiagnostic
- rustc_diagnostic_item = "AddSubdiagnostic" to rustc_diagnostic_item = "Subdiagnostic"
 2022-09-21 11:39:53 -04:00
Jhonny Bill Mena
a3396b2070 UPDATE - rename DiagnosticHandler macro to Diagnostic 2022-09-21 11:39:53 -04:00
Jhonny Bill Mena
191fac6826 UPDATE - rename AddSubdiagnostic trait to AddToDiagnostic 2022-09-21 11:39:53 -04:00
Jhonny Bill Mena
19b348fed4 UPDATE - rename DiagnosticHandler trait to IntoDiagnostic 2022-09-21 11:39:52 -04:00
Santiago Pastorino
550bd0945f
Simplify rpitit handling on lower_fn_decl 2022-09-19 09:30:39 -03:00
Dylan DPC
3ad81e0dd8
Rollup merge of #93628 - est31:stabilize_let_else, r=joshtriplett 
Stabilize `let else`

🎉  **Stabilizes the `let else` feature, added by [RFC 3137](https://github.com/rust-lang/rfcs/pull/3137).** 🎉

Reference PR: https://github.com/rust-lang/reference/pull/1156

closes #87335 (`let else` tracking issue)

FCP: https://github.com/rust-lang/rust/pull/93628#issuecomment-1029383585

----------

## Stabilization report

### Summary

The feature allows refutable patterns in `let` statements if the expression is
followed by a diverging `else`:

```Rust
fn get_count_item(s: &str) -> (u64, &str) {
    let mut it = s.split(' ');
    let (Some(count_str), Some(item)) = (it.next(), it.next()) else {
        panic!("Can't segment count item pair: '{s}'");
    };
    let Ok(count) = u64::from_str(count_str) else {
        panic!("Can't parse integer: '{count_str}'");
    };
    (count, item)
}
assert_eq!(get_count_item("3 chairs"), (3, "chairs"));
```

### Differences from the RFC / Desugaring

Outside of desugaring I'm not aware of any differences between the implementation and the RFC. The chosen desugaring has been changed from the RFC's [original](https://rust-lang.github.io/rfcs/3137-let-else.html#reference-level-explanations). You can read a detailed discussion of the implementation history of it in `@cormacrelf` 's [summary](https://github.com/rust-lang/rust/pull/93628#issuecomment-1041143670) in this thread, as well as the [followup](https://github.com/rust-lang/rust/pull/93628#issuecomment-1046598419). Since that followup, further changes have happened to the desugaring, in #98574, #99518, #99954. The later changes were mostly about the drop order: On match, temporaries drop in the same order as they would for a `let` declaration. On mismatch, temporaries drop before the `else` block.

### Test cases

In chronological order as they were merged.

Added by df9a2e0687 (#87688):

* [`ui/pattern/usefulness/top-level-alternation.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/pattern/usefulness/top-level-alternation.rs) to ensure the unreachable pattern lint visits patterns inside `let else`.

Added by 5b95df4bdc (#87688):

* [`ui/let-else/let-else-bool-binop-init.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-bool-binop-init.rs) to ensure that no lazy boolean expressions (using `&&` or `||`) are allowed in the expression, as the RFC mandates.
* [`ui/let-else/let-else-brace-before-else.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-brace-before-else.rs) to ensure that no `}` directly preceding the `else` is allowed in the expression, as the RFC mandates.
* [`ui/let-else/let-else-check.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-check.rs) to ensure that `#[allow(...)]` attributes added to the entire `let` statement apply for the `else` block.
* [`ui/let-else/let-else-irrefutable.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-irrefutable.rs) to ensure that the `irrefutable_let_patterns` lint fires.
* [`ui/let-else/let-else-missing-semicolon.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-missing-semicolon.rs) to ensure the presence of semicolons at the end of the `let` statement.
* [`ui/let-else/let-else-non-diverging.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-non-diverging.rs) to ensure the `else` block diverges.
* [`ui/let-else/let-else-run-pass.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-run-pass.rs) to ensure the feature works in some simple test case settings.
* [`ui/let-else/let-else-scope.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-scope.rs) to ensure the bindings created by the outer `let` expression are not available in the `else` block of it.

Added by bf7c32a447 (#89965):

* [`ui/let-else/issue-89960.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/issue-89960.rs) as a regression test for the ICE-on-error bug #89960 . Later in 102b9125e1 this got removed in favour of more comprehensive tests.

Added by 856541963c (#89974):

* [`ui/let-else/let-else-if.rs`](https://github.com/rust-lang/rust/blob/1.58.1/src/test/ui/let-else/let-else-if.rs) to test for the improved error message that points out that `let else if` is not possible.

Added by 9b45713b6c:

* [`ui/let-else/let-else-allow-unused.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-allow-unused.rs) as a regression test for #89807, to ensure that `#[allow(...)]` attributes added to the entire `let` statement apply for bindings created by the `let else` pattern.

Added by 61bcd8d307 (#89841):

* [`ui/let-else/let-else-non-copy.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-non-copy.rs) to ensure that a copy is performed out of non-copy wrapper types. This mirrors `if let` behaviour. The test case bases on rustc internal changes originally meant for #89933 but then removed from the PR due to the error prior to the improvements of #89841.
* [`ui/let-else/let-else-source-expr-nomove-pass.rs `](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-source-expr-nomove-pass.rs) to ensure that while there is a move of the binding in the successful case, the `else` case can still access the non-matching value. This mirrors `if let` behaviour.

Added by 102b9125e1 (#89841):

* [`ui/let-else/let-else-ref-bindings.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-ref-bindings.rs) and [`ui/let-else/let-else-ref-bindings-pass.rs `](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-ref-bindings-pass.rs) to check `ref` and `ref mut` keywords in the pattern work correctly and error when needed.

Added by 2715c5f984 (#89841):

* Match ergonomic tests adapted from the `rfc2005` test suite.

Added by fec8a507a2 (#89841):

* [`ui/let-else/let-else-deref-coercion-annotated.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-deref-coercion-annotated.rs) and [`ui/let-else/let-else-deref-coercion.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-deref-coercion.rs) to check deref coercions.

#### Added since this stabilization report was originally written (2022-02-09)

Added by 76ea566677 (#94211):

* [`ui/let-else/let-else-destructuring.rs`](https://github.com/rust-lang/rust/blob/1.63.0/src/test/ui/let-else/let-else-destructuring.rs) to give a nice error message if an user tries to do an assignment with a (possibly refutable) pattern and an `else` block, like asked for in #93995.

Added by e7730dcb7e (#94208):

* [`ui/let-else/let-else-allow-in-expr.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-allow-in-expr.rs) to test whether `#[allow(unused_variables)]` works in the expr, as well as its non presence, as well as putting it on the entire `let else` *affects* the expr, too. This was adding a missing test as pointed out by the stabilization report.
* Expansion of `ui/let-else/let-else-allow-unused.rs` and `ui/let-else/let-else-check.rs` to ensure that non-presence of `#[allow(unused)]` does issue the unused lint. This was adding a missing test case as pointed out by the stabilization report.

Added by 5bd71063b3 (#94208):

* [`ui/let-else/let-else-slicing-error.rs`](https://github.com/rust-lang/rust/blob/1.61.0/src/test/ui/let-else/let-else-slicing-error.rs), a regression test for #92069, which got fixed without addition of a regression test. This resolves a missing test as pointed out by the stabilization report.

Added by 5374688e1d (#98574):

* [`src/test/ui/async-await/async-await-let-else.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/async-await/async-await-let-else.rs) to test the interaction of async/await with `let else`

Added by 6c529ded86 (#98574):

* [`src/test/ui/let-else/let-else-temporary-lifetime.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-temporary-lifetime.rs) as a (partial) regression test for #98672

Added by 9b56640106 (#99518):

* [`src/test/ui/let-else/let-else-temp-borrowck.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-temporary-lifetime.rs) as a regression test for #93951
* Extension of `src/test/ui/let-else/let-else-temporary-lifetime.rs` to include a partial regression test for #98672 (especially regarding `else` drop order)

Added by baf9a7cb57 (#99518):

* Extension of `src/test/ui/let-else/let-else-temporary-lifetime.rs` to include a partial regression test for #93951, similar to `let-else-temp-borrowck.rs`

Added by 60be2de8b7 (#99518):

* Extension of `src/test/ui/let-else/let-else-temporary-lifetime.rs` to include a program that can now be compiled thanks to borrow checker implications of #99518

Added by 47a7a91c96 (#100132):

* [`src/test/ui/let-else/issue-100103.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/issue-100103.rs), as a regression test for #100103, to ensure that there is no ICE when doing `Err(...)?` inside else blocks.

Added by e3c5bd617d (#100443):

* [`src/test/ui/let-else/let-else-then-diverge.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-then-diverge.rs), to verify that there is no unreachable code error with the current desugaring.

Added by 981852677c (#100443):

* [`src/test/ui/let-else/issue-94176.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/issue-94176.rs), to make sure that a correct span is emitted for a missing trailing expression error. Regression test for #94176.

Added by e182d12a84 (#100434):

* [src/test/ui/unpretty/pretty-let-else.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/unpretty/pretty-let-else.rs), as a regression test to ensure pretty printing works for `let else` (this bug surfaced in many different ways)

Added by e26285603c (#99954):

* [`src/test/ui/let-else/let-else-temporary-lifetime.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-temporary-lifetime.rs) extended to contain & borrows as well, as this was identified as an earlier issue with the desugaring: https://github.com/rust-lang/rust/issues/98672#issuecomment-1200196921

Added by 2d8460ef43 (#99291):

* [`src/test/ui/let-else/let-else-drop-order.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/let-else-drop-order.rs) a matrix based test for various drop order behaviour of `let else`. Especially, it verifies equality of `let` and `let else` drop orders, [resolving](https://github.com/rust-lang/rust/pull/93628#issuecomment-1238498468) a [stabilization blocker](https://github.com/rust-lang/rust/pull/93628#issuecomment-1055738523).

Added by 1b87ce0d40 (#101410):

* Edit to `src/test/ui/let-else/let-else-temporary-lifetime.rs` to add the `-Zvalidate-mir` flag, as a regression test for #99228

Added by af591ebe4d (#101410):

* [`src/test/ui/let-else/issue-99975.rs`](https://github.com/rust-lang/rust/blob/master/src/test/ui/let-else/issue-99975.rs) as a regression test for the ICE #99975.

Added by this PR:

* `ui/let-else/let-else.rs`, a simple run-pass check, similar to `ui/let-else/let-else-run-pass.rs`.

### Things not currently tested

* ~~The `#[allow(...)]` tests check whether allow works, but they don't check whether the non-presence of allow causes a lint to fire.~~ → *test added by e7730dcb7eb29a10ee73f269f4dc6e9d606db0da*
* ~~There is no `#[allow(...)]` test for the expression, as there are tests for the pattern and the else block.~~ → *test added by e7730dcb7eb29a10ee73f269f4dc6e9d606db0da*
* ~~`let-else-brace-before-else.rs` forbids the `let ... = {} else {}` pattern and there is a rustfix to obtain `let ... = ({}) else {}`. I'm not sure whether the `.fixed` files are checked by the tooling that they compile. But if there is no such check, it would be neat to make sure that `let ... = ({}) else {}` compiles.~~ → *test added by e7730dcb7eb29a10ee73f269f4dc6e9d606db0da*
* ~~#92069 got closed as fixed, but no regression test was added. Not sure it's worth to add one.~~ → *test added by 5bd71063b3810d977aa376d1e6dd7cec359330cc*
* ~~consistency between `let else` and `if let` regarding lifetimes and drop order: https://github.com/rust-lang/rust/pull/93628#issuecomment-1055738523~~ → *test added by 2d8460ef43d902f34ba2133fe38f66ee8d2fdafc*

Edit: they are all tested now.

### Possible future work / Refutable destructuring assignments

[RFC 2909](https://rust-lang.github.io/rfcs/2909-destructuring-assignment.html) specifies destructuring assignment, allowing statements like `FooBar { a, b, c } = foo();`.
As it was stabilized, destructuring assignment only allows *irrefutable* patterns, which before the advent of `let else` were the only patterns that `let` supported.
So the combination of `let else` and destructuring assignments gives reason to think about extensions of the destructuring assignments feature that allow refutable patterns, discussed in #93995.

A naive mapping of `let else` to destructuring assignments in the form of `Some(v) = foo() else { ... };` might not be the ideal way. `let else` needs a diverging `else` clause as it introduces new bindings, while assignments have a default behaviour to fall back to if the pattern does not match, in the form of not performing the assignment. Thus, there is no good case to require divergence, or even an `else` clause at all, beyond the need for having *some* introducer syntax so that it is clear to readers that the assignment is not a given (enums and structs look similar). There are better candidates for introducer syntax however than an empty `else {}` clause, like `maybe` which could be added as a keyword on an edition boundary:

```Rust
let mut v = 0;
maybe Some(v) = foo(&v);
maybe Some(v) = foo(&v) else { bar() };
```

Further design discussion is left to an RFC, or the linked issue.
 2022-09-17 15:31:06 +05:30
Guillaume Gomez
8ba133fa7b
Rollup merge of #101825 - spastorino:fix-rpit-changes, r=oli-obk 
Fix back RPIT changes

r? `@oli-obk`

cc `@compiler-errors`
 2022-09-16 13:07:17 +02:00
est31
173eb6f407 Only enable the let_else feature on bootstrap 
On later stages, the feature is already stable.

Result of running:

rg -l "feature.let_else" compiler/ src/librustdoc/ library/ | xargs sed -s -i "s#\\[feature.let_else#\\[cfg_attr\\(bootstrap, feature\\(let_else\\)#"
 2022-09-15 21:06:45 +02:00
est31
bca3cf7e86 Stabilize the let_else feature 2022-09-15 21:06:45 +02:00
bors
750bd1a7ff Auto merge of #101313 - SparrowLii:mk_attr_id, r=cjgillot 
make `mk_attr_id` part of `ParseSess`

Updates #48685

The current `mk_attr_id` uses the `AtomicU32` type, which is not very efficient and adds a lot of lock contention in a parallel environment.

This PR refers to the task list in #48685, uses `mk_attr_id` as a method of the `AttrIdGenerator` struct, and adds a new field `attr_id_generator` to `ParseSess`.

`AttrIdGenerator` uses the `WorkerLocal`, which has two advantages: 1. `Cell` is more efficient than `AtomicU32`, and does not increase any lock contention. 2. We put the index of the work thread in the first few bits of the generated `AttrId`, so that the `AttrId` generated in different threads can be easily guaranteed to be unique.

cc `@cjgillot`
 2022-09-14 20:52:18 +00:00
Santiago Pastorino
45d8049387
Get rid of 'b lifetime in lower_param_bounds_mut 2022-09-14 17:40:51 -03:00
Santiago Pastorino
861055094c
Pass ImplTraitContext as &, there's no need for that to be &mut 2022-09-14 17:39:52 -03:00
Santiago Pastorino
669f2d4550
Revert "Rollup merge of #101496 - spastorino:lower_lifetime_binder_api_changes, r=oli-obk" 
This reverts commit 953a6b3da7, reversing
changes made to b5ffbd32d4.
 2022-09-14 17:26:37 -03:00
bors
a0d1df4a5d Auto merge of #101709 - nnethercote:simplify-visitors-more, r=cjgillot 
Simplify visitors more

A successor to #100392.

r? `@cjgillot`
 2022-09-14 05:21:14 +00:00
SparrowLii
1a3ecbdb6a make mk_attr_id part of ParseSess 2022-09-14 08:49:10 +08:00
Lukas Markeffsky
2b7fb8d941 Impove diagnostic for .await-ing non-futures 2022-09-12 16:54:25 +02:00
Nicholas Nethercote
925363f13d Remove unused span argument from walk_fn. 2022-09-12 13:24:27 +10:00
Nicholas Nethercote
6568ef338e Remove path_span argument to the visit_path_segment methods. 
The `visit_path_segment` method of both the AST and HIR visitors has a
`path_span` argument that isn't necessary. This commit removes it.

There are two very small and inconsequential functional changes.

- One call to `NodeCollector::insert` now is passed a path segment
  identifier span instead of a full path span. This span is only used in
a panic message printed in the case of an internal compiler bug.

- Likewise, one call to `LifetimeCollectVisitor::record_elided_anchor`
  now uses a path segment identifier span instead of a full path span.
  This span is used to make some `'_` lifetimes.
 2022-09-12 13:24:25 +10:00
bors
fa521a4691 Auto merge of #101688 - cjgillot:verify-hir-parent, r=petrochenkov 
Assert that HIR nodes are not their own parent.

Fixes https://github.com/rust-lang/rust/issues/101505.
Replaces #101513

r? `@petrochenkov` `@nnethercote`
 2022-09-12 00:41:56 +00:00
Camille GILLOT
51f486931f Assert that HIR nodes are not their own parent. 2022-09-11 20:12:51 +02:00
Michael Goulet
ec170bef0d Rebase fallout 2022-09-09 01:31:46 +00:00
Michael Goulet
526511e86b Appease clippy again 2022-09-09 01:31:46 +00:00
Michael Goulet
55df9201fe Tweak feature error, add test 2022-09-09 01:31:46 +00:00
Camille GILLOT
05812df603 Handle generic parameters. 2022-09-09 01:31:46 +00:00
Michael Goulet
cdf78073c5 Deeply check that method signatures match, and allow for nested RPITITs 2022-09-09 01:31:46 +00:00
Michael Goulet
1f03edeabe Bless tests, fix ICE with ImplTraitPlaceholder 2022-09-09 01:31:45 +00:00
Michael Goulet
70775304cd Address nits 2022-09-09 01:31:45 +00:00
Michael Goulet
249ede4195 Address rebase issues, make async fn in trait work 2022-09-09 01:31:45 +00:00
Michael Goulet
5be30f9d79 Make async fn in traits work 2022-09-09 01:31:45 +00:00
Michael Goulet
d34cb98fb0 Lower RPITIT to ImplTraitPlaceholder item 2022-09-09 01:31:44 +00:00
Michael Goulet
1499c089df
Rollup merge of #101499 - spastorino:add-lowering-arena, r=oli-obk 
Introduce lowering_arena to avoid creating AST nodes on the fly

`@oli-obk` requested this and other changes as a way of simplifying https://github.com/rust-lang/rust/pull/101345. This is just going to make the diff of https://github.com/rust-lang/rust/pull/101345 smaller.

r? `@oli-obk` `@cjgillot`
 2022-09-08 14:41:08 -07:00
Santiago Pastorino
d9a1faaa9c
Introduce lowering_arena to avoid creating AST nodes on the fly 2022-09-08 13:34:55 -03:00
bors
87788097b7 Auto merge of #101577 - Dylan-DPC:rollup-l9xw7i7, r=Dylan-DPC 
Rollup of 7 pull requests

Successful merges:

 - #98933 (Opaque types' generic params do not imply anything about their hidden type's lifetimes)
 - #101041 (translations(rustc_session): migrates rustc_session to use SessionDiagnostic - Pt. 2)
 - #101424 (Adjust and slightly generalize operator error suggestion)
 - #101496 (Allow lower_lifetime_binder receive a closure)
 - #101501 (Allow lint passes to be bound by `TyCtxt`)
 - #101515 (Recover from typo where == is used in place of =)
 - #101545 (Remove unnecessary `PartialOrd` and `Ord`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-09-08 15:53:14 +00:00
Dylan DPC
953a6b3da7
Rollup merge of #101496 - spastorino:lower_lifetime_binder_api_changes, r=oli-obk 
Allow lower_lifetime_binder receive a closure

``@oli-obk`` requested this and other changes as a way of simplifying https://github.com/rust-lang/rust/pull/101345. This is just going to make the diff of https://github.com/rust-lang/rust/pull/101345 smaller.

r? ``@oli-obk`` ``@cjgillot``
 2022-09-08 20:48:36 +05:30
Nicholas Nethercote
e67f39f8bc Introduce DotDotPos. 
This shrinks `hir::Pat` from 88 to 72 bytes.
 2022-09-08 15:25:50 +10:00
Nicholas Nethercote
4314615ff8 Arena-allocate hir::Lifetime. 
This shrinks `hir::Ty` from 72 to 48 bytes.

`visit_lifetime` is added to the HIR stats collector because these types
are now stored in memory on their own, instead of being within other
types.
 2022-09-08 15:07:19 +10:00
Santiago Pastorino
36fa12f1a4
Allow lower_lifetime_binder receive a closure 2022-09-07 18:01:01 -03:00
Matthias Krüger
0a1c816dcd
Rollup merge of #101503 - spastorino:add-debug-calls, r=compiler-errors 
Add debug calls

`@oli-obk` requested this and other changes as a way of simplifying https://github.com/rust-lang/rust/pull/101345. This is just going to make the diff of https://github.com/rust-lang/rust/pull/101345 smaller.

r? `@oli-obk` `@cjgillot`
 2022-09-07 21:48:16 +02:00
Matthias Krüger
9361297dfc
Rollup merge of #101493 - spastorino:borrow-mut-impl-trait-context, r=oli-obk 
Pass ImplTraitContext as &mut to avoid the need of ImplTraitContext::reborrow

`@oli-obk` requested this and other changes as a way of simplifying #101345. This is just going to make the diff of #101345 smaller.

r? `@oli-obk` `@cjgillot`
 2022-09-07 21:48:14 +02:00
Santiago Pastorino
e3a738a942
Add instrument and debug calls 2022-09-07 10:46:14 -03:00
Yuki Okushi
a12e29af92
Rollup merge of #101468 - spastorino:fix-ice-rpit-hrtb-without-dyn, r=cjgillot 
fix RPIT ICE for implicit HRTB when missing dyn

Closes #101297

r? `@cjgillot`

cc `@nikomatsakis`
 2022-09-07 07:43:52 +09:00
Santiago Pastorino
2166a36245
Pass ImplTraitContext as &mut to avoid the need of ImplTraitContext::reborrow later on 2022-09-06 15:22:16 -03:00
Santiago Pastorino
3f45dc1472
fix RPIT ICE for implicit HRTB when missing dyn 2022-09-06 11:00:29 -03:00
bors
6c358c67d4 Auto merge of #101241 - camsteffen:refactor-binding-annotations, r=cjgillot 
`BindingAnnotation` refactor

* `ast::BindingMode` is deleted and replaced with `hir::BindingAnnotation` (which is moved to `ast`)
* `BindingAnnotation` is changed from an enum to a tuple struct e.g. `BindingAnnotation(ByRef::No, Mutability::Mut)`
* Associated constants added for convenience `BindingAnnotation::{NONE, REF, MUT, REF_MUT}`

One goal is to make it more clear that `BindingAnnotation` merely represents syntax `ref mut` and not the actual binding mode. This was especially confusing since we had `ast::BindingMode`->`hir::BindingAnnotation`->`thir::BindingMode`.

I wish there were more symmetry between `ByRef` and `Mutability` (variant) naming (maybe `Mutable::Yes`?), and I also don't love how long the name `BindingAnnotation` is, but this seems like the best compromise. Ideas welcome.
 2022-09-06 03:16:29 +00:00
Yuki Okushi
0d8a1f4cbf
Rollup merge of #101447 - cjgillot:no-remap-resolver, r=spastorino 
Remove generics_def_id_map from the resolver.

This is internal state for lowering.  This does not belong in the resolver.

r? ``@spastorino``
 2022-09-06 08:36:10 +09:00
bors
b44197abb0 Auto merge of #101261 - TaKO8Ki:separate-receiver-from-arguments-in-hir, r=cjgillot 
Separate the receiver from arguments in HIR

Related to #100232

cc `@cjgillot`
 2022-09-05 16:21:40 +00:00
bors
2dc703fd6e Auto merge of #101228 - nnethercote:simplify-hir-PathSegment, r=petrochenkov 
Simplify `hir::PathSegment`

r? `@petrochenkov`
 2022-09-05 13:36:54 +00:00
Takayuki Maeda
87c6da363f separate the receiver from arguments in HIR 2022-09-05 22:25:49 +09:00
Camille GILLOT
037ab1d183 Remove generics_def_id_map from the resolver. 2022-09-05 13:32:13 +02:00
Dylan DPC
5d55009b79
Rollup merge of #101142 - nnethercote:improve-hir-stats, r=davidtwco 
Improve HIR stats

#100398 improve the AST stats collection done by `-Zhir-stats`. This PR does the same for HIR stats collection.

r? `@davidtwco`
 2022-09-05 14:15:51 +05:30
Nicholas Nethercote
08a00eb0da Address review comments. 2022-09-05 14:20:29 +10:00
Nicholas Nethercote
bb0ae3c446 Make hir::PathSegment::hir_id non-optional. 2022-09-05 14:20:25 +10:00
Nicholas Nethercote
6d850d936b Make hir::PathSegment::res non-optional. 2022-09-05 14:20:25 +10:00
Cameron Steffen
02ba216e3c Refactor and re-use BindingAnnotation 2022-09-02 12:55:05 -05:00
Oli Scherer
ee3c835018 Always import all tracing macros for the entire crate instead of piecemeal by module 2022-09-01 14:54:27 +00:00
Oli Scherer
d3b22c7267 Directly use the instrument macro instead of its full path 2022-09-01 14:53:46 +00:00
bors
eac6c33bc6 Auto merge of #100869 - nnethercote:replace-ThinVec, r=spastorino 
Replace `rustc_data_structures::thin_vec::ThinVec` with `thin_vec::ThinVec`

`rustc_data_structures::thin_vec::ThinVec` looks like this:
```
pub struct ThinVec<T>(Option<Box<Vec<T>>>);
```
It's just a zero word if the vector is empty, but requires two
allocations if it is non-empty. So it's only usable in cases where the
vector is empty most of the time.

This commit removes it in favour of `thin_vec::ThinVec`, which is also
word-sized, but stores the length and capacity in the same allocation as
the elements. It's good in a wider variety of situation, e.g. in enum
variants where the vector is usually/always non-empty.

The commit also:
- Sorts some `Cargo.toml` dependency lists, to make additions easier.
- Sorts some `use` item lists, to make additions easier.
- Changes `clean_trait_ref_with_bindings` to take a
  `ThinVec<TypeBinding>` rather than a `&[TypeBinding]`, because this
  avoid some unnecessary allocations.

r? `@spastorino`
 2022-09-01 08:01:06 +00:00
bors
b32223fec1 Auto merge of #100707 - dzvon:fix-typo, r=davidtwco 
Fix a bunch of typo

This PR will fix some typos detected by [typos].

I only picked the ones I was sure were spelling errors to fix, mostly in
the comments.

[typos]: https://github.com/crate-ci/typos
 2022-09-01 05:39:58 +00:00
Dezhi Wu
b1430fb7ca Fix a bunch of typo 
This PR will fix some typos detected by [typos].

I only picked the ones I was sure were spelling errors to fix, mostly in
the comments.

[typos]: https://github.com/crate-ci/typos
 2022-08-31 18:24:55 +08:00
Matthias Krüger
78e5d05ea0
Rollup merge of #101049 - JeanCASPAR:remove-span_fatal-from-ast_lowering, r=davidtwco 
Remove span fatal from ast lowering

Now the crate `rustc_ast_lowering` is fully migrated to `SessionDiagnostic`.

r? ``@davidtwco``
 2022-08-31 07:57:59 +02:00
JeanCASPAR
79d4f09942
Change fatal diagnostic to an error. 
Co-authored-by: Esteban Kuber <estebank@users.noreply.github.com>
 2022-08-30 14:26:09 +02:00
Nilstrieb
d1ef8180f9 Revert let_chains stabilization 
This reverts commit 3266460749.

This is the revert against master, the beta revert was already done in #100538.
 2022-08-29 19:34:11 +02:00
Nicholas Nethercote
b38106b6d8 Replace rustc_data_structures::thin_vec::ThinVec with thin_vec::ThinVec. 
`rustc_data_structures::thin_vec::ThinVec` looks like this:
```
pub struct ThinVec<T>(Option<Box<Vec<T>>>);
```
It's just a zero word if the vector is empty, but requires two
allocations if it is non-empty. So it's only usable in cases where the
vector is empty most of the time.

This commit removes it in favour of `thin_vec::ThinVec`, which is also
word-sized, but stores the length and capacity in the same allocation as
the elements. It's good in a wider variety of situation, e.g. in enum
variants where the vector is usually/always non-empty.

The commit also:
- Sorts some `Cargo.toml` dependency lists, to make additions easier.
- Sorts some `use` item lists, to make additions easier.
- Changes `clean_trait_ref_with_bindings` to take a
  `ThinVec<TypeBinding>` rather than a `&[TypeBinding]`, because this
  avoid some unnecessary allocations.
 2022-08-29 15:42:13 +10:00
Nicholas Nethercote
22379bd9db Use &'hir Mod everywhere. 
For consistency, and because it makes HIR measurement simpler and more
accurate.
 2022-08-29 06:35:14 +10:00
Nicholas Nethercote
a847d5e4ce Use &'hir Ty everywhere. 
For consistency, and because it makes HIR measurement simpler and more
accurate.
 2022-08-29 06:35:14 +10:00
Nicholas Nethercote
db35b685a7 Use &'hir Expr everywhere. 
For consistency, and because it makes HIR measurement simpler and more
accurate.
 2022-08-29 06:35:14 +10:00
Jean CASPAR
e89d4fcc7d remove span_fatal from ast_lowering 2022-08-27 09:15:55 +02:00
Michael Goulet
bc1d205e4c
Rollup merge of #100724 - JeanCASPAR:migrate-ast_lowering-to-session-diagnostic, r=davidtwco 
Migrate ast lowering to session diagnostic

I migrated the whole rustc_ast_lowering crate to session diagnostic *except* the for the use of `span_fatal` at /compiler/rustc_ast_lowering/src/expr.rs#L1268 because `#[fatal(...)]` is not yet supported (see https://github.com/rust-lang/rust/pull/100694).
 2022-08-26 15:56:21 -07:00
Nicholas Nethercote
6087dc2054 Remove the symbol from ast::LitKind::Err. 
Because it's never used meaningfully.
 2022-08-23 16:56:24 +10:00
Jean CASPAR
5fef1b865f Resolve conflicts 2022-08-22 19:34:19 +02:00
Jean CASPAR
9472df10d0 Changes made in response to feedback 2022-08-22 19:24:14 +02:00
Jean CASPAR
e701c72a63 Migrate all span_err(...) in ast_lowering to SessionDiagnostic 2022-08-22 19:21:41 +02:00
Jean CASPAR
5164966591 Migrate ast_lowering::pat to SessionDiagnostic 2022-08-22 19:21:41 +02:00
Jean CASPAR
d75fd91d50 Migrate ast_lowering::ast to SessionDiagnostic 2022-08-22 19:21:39 +02:00
Jean CASPAR
1382d307d3 Migrate ast_lowering::expr to SessionDiagnostic 2022-08-22 19:21:39 +02:00
Jean CASPAR
0043d10c71 Migrate ast_lowering::lib and ast_lowering::item to SessionDiagnostic 2022-08-22 19:19:59 +02:00
Jean CASPAR
73ae38bac1 Migrate ast_lowering::path to SessionDiagnostic 2022-08-22 19:19:58 +02:00
Nicholas Nethercote
619b8abaa6 Use AttrVec in more places. 
In some places we use `Vec<Attribute>` and some places we use
`ThinVec<Attribute>` (a.k.a. `AttrVec`). This results in various points
where we have to convert between `Vec` and `ThinVec`.

This commit changes the places that use `Vec<Attribute>` to use
`AttrVec`. A lot of this is mechanical and boring, but there are
some interesting parts:
- It adds a few new methods to `ThinVec`.
- It implements `MapInPlace` for `ThinVec`, and introduces a macro to
  avoid the repetition of this trait for `Vec`, `SmallVec`, and
  `ThinVec`.

Overall, it makes the code a little nicer, and has little effect on
performance. But it is a precursor to removing
`rustc_data_structures::thin_vec::ThinVec` and replacing it with
`thin_vec::ThinVec`, which is implemented more efficiently.
 2022-08-22 07:35:33 +10:00
Matthias Krüger
d5dca26a94
Rollup merge of #100018 - nnethercote:clean-up-LitKind, r=petrochenkov 
Clean up `LitKind`

r? ``@petrochenkov``
 2022-08-17 12:32:49 +02:00
Dylan DPC
2e78db3858
Rollup merge of #100610 - nnethercote:ast-and-parser-tweaks, r=spastorino 
Ast and parser tweaks

r? `@spastorino`
 2022-08-16 18:16:13 +05:30
bors
14a459bf37 Auto merge of #100441 - nnethercote:shrink-ast-Attribute, r=petrochenkov 
Shrink `ast::Attribute`.

r? `@ghost`
 2022-08-16 07:54:22 +00:00
bors
8556e6620e Auto merge of #100611 - matthiaskrgr:rollup-rxj10ur, r=matthiaskrgr 
Rollup of 6 pull requests

Successful merges:

 - #100338 (when there are 3 or more return statements in the loop)
 - #100384 (Add support for generating unique profraw files by default when using `-C instrument-coverage`)
 - #100460 (Update the minimum external LLVM to 13)
 - #100567 (Add missing closing quote)
 - #100590 (Suggest adding an array length if possible)
 - #100600 (Rename Machine memory hooks to suggest when they run)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-08-16 05:13:38 +00:00
Matthias Krüger
76dd1663d9
Rollup merge of #100590 - TaKO8Ki:suggest-adding-array-length, r=compiler-errors 
Suggest adding an array length if possible

fixes #100448
 2022-08-16 06:05:59 +02:00
Nicholas Nethercote
5d3cc1713a Rename some things related to literals. 
- Rename `ast::Lit::token` as `ast::Lit::token_lit`, because its type is
  `token::Lit`, which is not a token. (This has been confusing me for a
  long time.)
  reasonable because we have an `ast::token::Lit` inside an `ast::Lit`.
- Rename `LitKind::{from,to}_lit_token` as
  `LitKind::{from,to}_token_lit`, to match the above change and
  `token::Lit`.
 2022-08-16 13:41:34 +10:00
bors
ef9810a3e2 Auto merge of #100237 - cjgillot:no-special-hash-hir, r=nagisa 
Remove manual implementations of HashStable for hir::Expr and hir::Ty.

We do not need to force hashing HIR bodies inside those nodes. The contents of bodies are not accessible from the `hir_owner` query which used `hash_without_bodies`. When the content of a body is required, the access is still done using `hir_owner_nodes`, which continues hashing HIR bodies.
 2022-08-16 02:32:47 +00:00
Nicholas Nethercote
3e04fed6fa Remove {ast,hir}::WhereEqPredicate::id. 
These fields are unused.
 2022-08-16 12:13:23 +10:00
Nicholas Nethercote
85a6cd6a47 Shrink ast::Attribute. 2022-08-16 11:10:13 +10:00
Takayuki Maeda
4d1b5f0d99 suggest adding an array length if possible 2022-08-16 00:16:14 +09:00
bors
6ce76091c7 Auto merge of #96745 - ehuss:even-more-attribute-validation, r=cjgillot 
Visit attributes in more places.

This adds 3 loosely related changes (I can split PRs if desired):

- Attribute checking on pattern struct fields.
- Attribute checking on struct expression fields.
- Lint level visiting on pattern struct fields, struct expression fields, and generic parameters.

There are still some lints which ignore lint levels in various positions. This is a consequence of how the lints themselves are implemented. For example, lint levels on associated consts don't work with `unused_braces`.
 2022-08-15 05:50:54 +00:00
Mark Rousskov
154a09dd91 Adjust cfgs 2022-08-12 16:28:15 -04:00
Eric Huss
7b36047239 Make Node::ExprField a child of Node::Expr. 
This was incorrectly inserting the ExprField as a sibling of the struct
expression.

This required adjusting various parts which were looking at parent node
of a field expression to find the struct.
 2022-08-11 21:48:39 -07:00
Eric Huss
dcd5177fd4 Add visitors for PatField and ExprField. 
This helps simplify the code. It also fixes it to use the correct parent
when lowering. One consequence is the `non_snake_case` lint needed
to change the way it looked for parent nodes in a struct pattern.

This also includes a small fix to use the correct `Target` for
expression field attribute validation.
 2022-08-11 21:48:39 -07:00
Eric Huss
b651c1cebe Check attributes on struct expression fields. 
Attributes on struct expression fields were not being checked for
validity. This adds the fields as HIR nodes so that `CheckAttrVisitor`
can visit those nodes to check their attributes.
 2022-08-11 21:48:39 -07:00
Eric Huss
1b464c73b7 Check attributes on pattern fields. 
Attributes on pattern struct fields were not being checked for validity.
This adds the fields as HIR nodes so that the `CheckAttrVisitor` can
visit those nodes to check their attributes.
 2022-08-11 21:48:39 -07:00
Matthias Krüger
8237efc52d
Rollup merge of #100392 - nnethercote:simplify-visitors, r=cjgillot 
Simplify visitors

By removing some unused arguments.

r? `@cjgillot`
 2022-08-11 22:53:08 +02:00
Matthias Krüger
e221aafae6
Rollup merge of #100307 - nnethercote:fix-96847, r=cjgillot 
Fix #96847

r? `@petrochenkov`
 2022-08-11 22:53:05 +02:00
Nicholas Nethercote
ce78042a42 Avoid lowering a MacArgs::Eq twice. 
Fixes #96847.
 2022-08-11 21:06:40 +10:00
Nicholas Nethercote
232bd80130 Simplify rustc_ast::visit::Visitor::visit_poly_trait_ref. 
It is passed an argument that is never used.
 2022-08-11 11:10:01 +10:00
Nicholas Nethercote
8c5303898e Simplify rustc_hir::intravisit::Visitor::visit_variant_data. 
It has four arguments that are never used. This avoids lots of argument
passing in functions that feed into `visit_variant_data`.
 2022-08-11 10:54:01 +10:00
Camille GILLOT
9701845287 Do not consider method call receiver as an argument in AST. 2022-08-10 18:34:54 +02:00
Santiago Pastorino
750a04ea7f
Add docs for get_remapped_def_id 2022-08-09 16:39:02 -03:00
Santiago Pastorino
457ff7c56c
Iterate def_ids map backwards to try first the latest mappings (it's a stack) 2022-08-09 16:33:19 -03:00
Camille GILLOT
5d75ca5ef4 Remove unused hashing infra. 2022-08-07 17:51:55 +02:00
Camille GILLOT
f6af4efec5 Use start_point instead of next_point to point to elided lifetime ampersand. 2022-08-07 14:35:11 +02:00
Santiago Pastorino
4170d7390b
Fix typo 2022-08-04 15:13:47 -03:00
Santiago Pastorino
065e497630
Improve opt_local_def_id docs 2022-08-04 15:13:44 -03:00
Santiago Pastorino
bf1c7da147
Improve record_def_id_remap docs 2022-08-04 12:47:19 -03:00
Santiago Pastorino
ece52451f6
Do not collect lifetimes with Infer resolution 2022-08-04 12:40:00 -03:00
Santiago Pastorino
45991f9175
Use span_bug instead of panic 2022-08-04 12:07:03 -03:00
Santiago Pastorino
5e71659983
Add docs to record_elided_anchor 2022-08-04 11:27:02 -03:00
Santiago Pastorino
f8b1b2bdfb
Extract record_elided_anchor 2022-08-04 11:27:02 -03:00
Santiago Pastorino
9f10f589a7
Move new_remapping inside with_hir_id_owner 2022-08-04 11:27:02 -03:00
Santiago Pastorino
1ece866cf1
Add documentation for create_lifetime_defs 2022-08-04 11:27:02 -03:00
Santiago Pastorino
2f353d1f72
Add more debug calls 2022-08-04 11:27:01 -03:00
Santiago Pastorino
cab67404a4
Add documentation about lifetime args 2022-08-04 11:27:01 -03:00
Santiago Pastorino
a3bfdc77a7
Add documentation about lifetime_defs 2022-08-04 11:27:01 -03:00
Santiago Pastorino
9c7de6fb3c
Move hir_bounds after lifetime_defs 2022-08-04 11:27:01 -03:00
Santiago Pastorino
3f7db370ef
captures -> collected_lifetimes 2022-08-04 11:27:00 -03:00
Santiago Pastorino
12fa3393a5
Move lifetimes_in_bounds call to outside with_hir_id_owner block in lower_async_fn_ret_ty 2022-08-04 11:27:00 -03:00
Santiago Pastorino
4b9b5838ac
Move lifetimes_in_bounds call to outside with_hir_id_owner block in lower_opaque_impl_trait 2022-08-04 11:27:00 -03:00
Santiago Pastorino
76b518fc83
Document what collected_lifetimes vec containts 2022-08-04 11:27:00 -03:00
Santiago Pastorino
d85720a083
Document lower_opaque_impl_trait 2022-08-04 11:26:59 -03:00
Santiago Pastorino
6289d0eb53
with_lifetime_binder is now lower_lifetime_binder and doesn't need a closure 2022-08-04 11:26:59 -03:00
Santiago Pastorino
11e00f502a
Add comments on with_remapping 2022-08-04 11:26:59 -03:00
Santiago Pastorino
c946cdceb4
Document opt_local_def_id 2022-08-04 11:26:59 -03:00
Santiago Pastorino
966269a464
Document generics_def_id_map field and record/get methods on it 2022-08-04 11:26:58 -03:00
Santiago Pastorino
78585098b5
Add comments about lifetime collect and create lifetime defs for RPITs 2022-08-04 11:26:58 -03:00
Santiago Pastorino
40bcbed3c7
Avoid explicitly handling res when is not needed 2022-08-04 11:26:58 -03:00
Santiago Pastorino
cd3c388418
create_and_capture_lifetime_defs -> create_lifetime_defs 2022-08-04 11:26:57 -03:00
Santiago Pastorino
13800624de
Remove captured_lifetimes and LifetimeCaptureContext and make create_lifetime_defs return the captures 2022-08-04 11:26:57 -03:00
Santiago Pastorino
1d6cebfd6b
Implement def_id based remapping 2022-08-04 11:26:57 -03:00
Santiago Pastorino
f0db1d68e6
Remove local_def_id from captured_lifetimes 2022-08-04 11:26:57 -03:00
Santiago Pastorino
2d826e27c4
Capture things as Lifetime object to simplify things 2022-08-04 11:26:57 -03:00
Santiago Pastorino
f6b4dd1541
Create new_mapping local structure and avoid checking def_ids on captures 2022-08-04 11:26:56 -03:00
Santiago Pastorino
6c6a81e48e
Remove binders_to_ignore from LifetimeCaptureContext 2022-08-04 11:26:56 -03:00
Santiago Pastorino
95158fdf3a
No need to store parent_def_id in LifetimeCaptureContext 2022-08-04 11:26:56 -03:00
Santiago Pastorino
552f6b0f81
No need to check binders to ignore on new_named_lifetime_with_res's LifetimeRes::Fresh 2022-08-04 11:26:56 -03:00
Santiago Pastorino
6041ed0775
No need to check binders to ignore on new_named_lifetime_with_res's LifetimeRes::Param 2022-08-04 11:26:55 -03:00
Santiago Pastorino
d9e6364755
new_named_lifetime_with_res's LifetimeRes::Fresh should have created def_id already 2022-08-04 11:26:55 -03:00
Santiago Pastorino
3030ab3074
new_named_lifetime_with_res's LifetimeRes::Param should have created def_id already 2022-08-04 11:26:55 -03:00
Santiago Pastorino
14ea17858d
Fail if LifetimeRes is Infer when creating def ids for lifetimes copies 2022-08-04 11:26:55 -03:00
Santiago Pastorino
c390bda356
Record RPITs elided lifetimes in Rptr Tys 2022-08-04 11:26:55 -03:00
Santiago Pastorino
1802d45b12
Record RPITs elided lifetimes in path segments 2022-08-04 11:26:54 -03:00
Santiago Pastorino
81c4d2371a
Restructure visit_ty in a more clear way 2022-08-04 11:26:54 -03:00
Santiago Pastorino
05b989e16e
Skip lifetimes in binders when visiting 2022-08-04 11:26:54 -03:00
Santiago Pastorino
4f334f2b97
Move LifetimeCollectVisitor to rustc_ast_lowering 2022-08-04 11:26:54 -03:00
Santiago Pastorino
9f77688d17
Completely remove captures flag 2022-08-04 11:26:53 -03:00
Santiago Pastorino
20c88a2a30
Do not execute captures code when lowering lifetimes as GenericArg 2022-08-04 11:26:53 -03:00
Santiago Pastorino
9c0d9babd1
Do not execute captures code for async fns 2022-08-04 11:26:53 -03:00
Santiago Pastorino
5a184acfc6
There's no need to check binders_to_ignore using the old code anymore 2022-08-04 11:26:53 -03:00
Santiago Pastorino
19dcbd151b
Explicitly gather lifetimes and definitions for bare async fns 2022-08-04 11:26:52 -03:00
Santiago Pastorino
25825cd4fa
Extract create_and_capture_lifetime_defs function 2022-08-04 11:26:52 -03:00
Santiago Pastorino
fac763168f
Remove NEW_COLLECT_LIFETIMES env var 2022-08-04 11:26:52 -03:00
Santiago Pastorino
399609e841
Add debug! calls 2022-08-04 11:26:52 -03:00
Santiago Pastorino
cda2c04592
Explicitly gather lifetimes and definitions in RPIT 2022-08-04 11:26:51 -03:00
Santiago Pastorino
84a24a1b3c
Unroll while_capturing_lifetimes into lower_opaque_impl_trait 2022-08-04 11:26:51 -03:00
Santiago Pastorino
0f11a0cd24
Add captures flag to capture or not while lowering 2022-08-04 11:26:51 -03:00
Santiago Pastorino
b14c9571fa
Make lower_generic_bound_predicate receive AST bounds instead of HIR bounds 2022-08-04 11:26:51 -03:00
Santiago Pastorino
5c23a2e5a6
Remove old docs on lower_async_fn_ret_ty 2022-08-04 11:26:50 -03:00
Camille GILLOT
110f0656cb Store associated item defaultness in impl_defaultness. 2022-08-01 21:38:16 +02:00
Camille GILLOT
10be0dd8df Replace LifetimeRes::Anonymous by LifetimeRes::Infer. 2022-07-26 19:00:31 +02:00
Camille GILLOT
ab63591f00 Remove the distinction between LifetimeName::Implicit and LifetimeName::Underscore. 2022-07-26 19:00:31 +02:00
bors
6dbae3ad19 Auto merge of #97313 - cjgillot:ast-lifetimes-anon, r=petrochenkov 
Resolve function lifetime elision on the AST

~Based on https://github.com/rust-lang/rust/pull/97720~

Lifetime elision for functions is purely syntactic in nature, so can be resolved on the AST.
This PR replicates the elision logic and diagnostics on the AST, and replaces HIR-based resolution by a `delay_span_bug`.

This refactor allows for more consistent diagnostics, which don't have to guess the original code from HIR.

r? `@petrochenkov`
 2022-07-25 20:02:55 +00:00
Camille GILLOT
3c5048d2ec Report elision failures on the AST. 2022-07-25 19:19:23 +02:00
Michael Woerister
88f6c6d8a0 Remove unused StableMap and StableSet types from rustc_data_structures 2022-07-20 13:11:39 +02:00
Matthias Krüger
4815f94c51
Rollup merge of #99401 - TaKO8Ki:avoid-symbol-to-&str-conversions, r=nnethercote 
Avoid `Symbol` to `&str` conversions

`Symbol::as_str` is a slowish operation, so this patch removes some usages of it.
 2022-07-19 13:30:46 +02:00
Takayuki Maeda
a22934bea1 avoid Symbol to &str conversions 2022-07-18 14:25:34 +09:00
Caio
3266460749 Stabilize let_chains 2022-07-16 20:17:58 -03:00
Aaron Hill
c7b31d0ac9
Correctly handle path stability for 'use tree' items 
PR #5956 started checking the stability of path segments.
However, this was not applied to 'use tree' items
(e.g. 'use some::path::{ItemOne, ItemTwo}') due to the way
that we desugar these items in HIR lowering.

This PR modifies 'use tree' lowering to preserve resolution
information, which is needed by stability checking.
 2022-07-15 17:47:14 -05:00
bors
f1a8854f9b Auto merge of #99231 - Dylan-DPC:rollup-0tl8c0o, r=Dylan-DPC 
Rollup of 5 pull requests

Successful merges:

 - #97720 (Always create elided lifetime parameters for functions)
 - #98315 (Stabilize `core::ffi:c_*` and rexport in `std::ffi`)
 - #98705 (Implement `for<>` lifetime binder for closures)
 - #99126 (remove allow(rustc::potential_query_instability) in rustc_span)
 - #99139 (Give a better error when `x dist` fails for an optional tool)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-07-14 11:00:30 +00:00
Dylan DPC
e5a86d7358
Rollup merge of #98705 - WaffleLapkin:closure_binder, r=cjgillot 
Implement `for<>` lifetime binder for closures

This PR implements RFC 3216 ([TI](https://github.com/rust-lang/rust/issues/97362)) and allows code like the following:

```rust
let _f = for<'a, 'b> |a: &'a A, b: &'b B| -> &'b C { b.c(a) };
//       ^^^^^^^^^^^--- new!
```

cc ``@Aaron1011`` ``@cjgillot``
 2022-07-14 14:14:21 +05:30
Joshua Nelson
3c9765cff1 Rename debugging_opts to unstable_opts 
This is no longer used only for debugging options (e.g. `-Zoutput-width`, `-Zallow-features`).
Rename it to be more clear.
 2022-07-13 17:47:06 -05:00
Maybe Waffle
df4fee9841 Add an indirection for closures in hir::ExprKind 
This helps bring `hir::Expr` size down, `Closure` was the biggest
variant, especially after `for<>` additions.
 2022-07-12 21:00:13 +04:00
Maybe Waffle
c2dbd62c7c Lower closure binders to hir & properly check them 2022-07-12 21:00:03 +04:00
Maybe Waffle
40ae7b5b8e Parse closure binders 
This is first step in implementing RFC 3216.
- Parse `for<'a>` before closures in ast
  - Error in lowering
- Add `closure_lifetime_binder` feature
 2022-07-12 16:25:16 +04:00
Ding Xiang Fei
8e4a971084
extract method to read scrutinee conditionally 2022-07-11 23:20:38 +02:00
Ding Xiang Fei
1cd30e7b32
move else block into the Local struct 2022-07-11 23:20:37 +02:00
Ding Xiang Fei
6c529ded86
lower let-else in MIR instead 2022-07-11 23:20:36 +02:00
bors
38b72154de Auto merge of #98637 - cjgillot:bare-trait-anon-lt, r=petrochenkov 
Create fresh lifetime parameters for bare fn trait too

The current code fails to account for the equivalence between `dyn FnMut(&mut u8)` and bare `FnMut(&mut u8)`, and treated them differently.

This PR introduces a special case for `Fn` traits, which are always fully resolved.

Fixes #98616
Fixes #98726
This will require a beta-backport, as beta contains that bug.

r? `@petrochenkov`
 2022-07-11 17:09:37 +00:00
bors
0f573a0c54 Auto merge of #95573 - cjgillot:lower-query, r=michaelwoerister 
Make lowering a query

Split from https://github.com/rust-lang/rust/pull/88186.

This PR refactors the relationship between lowering and the resolver outputs in order to make lowering itself a query.
In a first part, lowering is changed to avoid modifying resolver outputs, by maintaining its own data structures for creating new `NodeId`s and so.

Then, the `TyCtxt` is modified to allow creating new `LocalDefId`s from inside it. This is done by:
- enclosing `Definitions` in a lock, so as to allow modification;
- creating a query `register_def` whose purpose is to declare a `LocalDefId` to the query system.

See `TyCtxt::create_def` and `TyCtxt::iter_local_def_id` for more detailed explanations of the design.
 2022-07-07 18:14:44 +00:00
bors
e78e747f53 Auto merge of #98827 - aDotInTheVoid:suggest-extern-block, r=nagisa 
Suggest using block for `extern "abi" fn` with no body

`@rustbot` modify labels: +A-diagnostics
 2022-07-07 04:18:47 +00:00
Camille GILLOT
32a30cad03 Use DefIdTree instead of re-implementing it. 2022-07-06 23:30:00 +02:00
Camille GILLOT
8fc3deb1b4 Remove sess field from LoweringContext. 2022-07-06 23:15:57 +02:00
Camille GILLOT
74be945820 Expand comment in with_hir_id_owner. 2022-07-06 23:15:11 +02:00
Camille GILLOT
682f57656e Do not create a new NodeId when not used. 2022-07-06 23:10:36 +02:00
Camille GILLOT
fb060fb774 Remove useless branch. 2022-07-06 23:09:29 +02:00
Camille GILLOT
250c71b85d Make AST lowering a query. 2022-07-06 23:04:55 +02:00
Nixon Enraght-Moony
18ca2946e0 ast: Add span to Extern 2022-07-02 23:30:03 +01:00
Camille GILLOT
21a12e8ab7 Handle fresh lifetimes on bare trait objects. 2022-07-02 09:21:55 +02:00
Cameron Steffen
ec82bc1996 Factor out hir::Node::Binding 2022-07-01 10:04:19 -05:00
Nicholas Nethercote
7c40661ddb Update smallvec to 1.8.1. 
This pulls in https://github.com/servo/rust-smallvec/pull/282, which
gives some small wins for rustc.
 2022-06-27 08:48:55 +10:00
Camille GILLOT
7437136f0e Use CreateParameter mode for closures too. 2022-06-21 21:13:43 +02:00
Camille GILLOT
32af719b07 Always create parameters for functions-like types. 2022-06-21 21:13:41 +02:00
Camille GILLOT
bc6a2c11ee Leave the responsibility to create Fresh lifetimes to lowering. 2022-06-19 22:32:43 +02:00
bors
3a8b0144c8 Auto merge of #98106 - cjgillot:split-definitions, r=michaelwoerister 
Split up `Definitions` and `ResolverAstLowering`.

Split off https://github.com/rust-lang/rust/pull/95573

r? `@michaelwoerister`
 2022-06-17 10:00:11 +00:00
Yuki Okushi
bfc6c90115
Rollup merge of #98119 - EdwinRy:path-parenthesized-type-error, r=estebank 
Refactor path segment parameter error

This PR attempts to rewrite the error handling for an unexpected parenthesised type parameters to:
- Use provided data instead of re-parsing the whole span
- Add a multipart suggestion to reflect on the changes with an underline
- Remove the unnecessary "if" nesting
 2022-06-16 07:24:43 +09:00
Camille GILLOT
ae5959f4ba Consume resolutions for lowering separately. 2022-06-15 19:42:43 +02:00
Camille GILLOT
8ffbd814af Update next_node_id. 2022-06-15 19:41:41 +02:00
Yuki Okushi
87e373e82f
Rollup merge of #98110 - cjgillot:closure-brace, r=Aaron1011 
Make `ExprKind::Closure` a struct variant.

Simple refactor since we both need it to introduce additional fields in `ExprKind::Closure`.

r? ``@Aaron1011``
 2022-06-15 19:37:14 +09:00
EdwinRy
71a98e1a4e Refactor path segment parameter error 2022-06-15 02:50:34 +01:00
EdwinRy
c8b411ebf1 rename function and remove return type 2022-06-15 01:06:40 +01:00
Camille GILLOT
34e4d72929 Separate source_span and expn_that_defined from Definitions. 2022-06-14 22:45:51 +02:00
Camille GILLOT
b676edd641 Do not modify the resolver outputs. 2022-06-14 22:44:27 +02:00
Camille GILLOT
603746a35e Make ResolverAstLowering a struct. 2022-06-14 22:44:27 +02:00
Takayuki Maeda
77d6176e69 remove unnecessary to_string and String::new 2022-06-13 15:48:40 +09:00
Michael Goulet
5f7474e6dc Address comments 2022-06-11 16:38:48 -07:00
Michael Goulet
9c47afe9fa Handle empty where-clause better 2022-06-11 16:27:01 -07:00
Camille GILLOT
3039cfeb6a Make ExprKind::Closure a struct variant. 2022-06-12 00:16:27 +02:00
Santiago Pastorino
4ae69f8617
Extract lower_generic_and_bounds function 2022-06-07 18:29:07 -03:00
Santiago Pastorino
1e6ed67d37
Extract lower_generic_param_kind 2022-06-07 18:29:07 -03:00
Santiago Pastorino
a22aad32eb
Instrument important fns in AST lowering 2022-06-07 18:29:06 -03:00
Camille GILLOT
a07290047e Compute lifetimes in scope at diagnostic time. 2022-06-04 15:28:15 +02:00
bors
c3384ea35c Auto merge of #97717 - matthiaskrgr:rollup-lalaii2, r=matthiaskrgr 
Rollup of 5 pull requests

Successful merges:

 - #97446 (Make hir().get_generics and generics_of consistent.)
 - #97656 (Add a suggestion to replace parentheses with angle brackets on associated trait constraint)
 - #97692 (Add `#T-types/nominated` zulip notification)
 - #97696 (Do not ICE when failing to normalize during inlining.)
 - #97702 (Remove useless LocalDefId in ImplTraitContext::Universal.)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-06-04 02:10:35 +00:00
bors
f15370b4e4 Auto merge of #97670 - spastorino:simplify-universal-impl-trait-lowering2, r=Dylan-DPC 
Make params be SmallVec as originally was

r? `@cjgillot`
It was originally a [`SmallVec`](https://github.com/rust-lang/rust/pull/97598/files#diff-0a61b538a3cec072c76fecae4635af6a12ec3256860029ac70549c2aa53ab394L1497), I've mistakenly changed it [here](https://github.com/rust-lang/rust/pull/97598/files#diff-0a61b538a3cec072c76fecae4635af6a12ec3256860029ac70549c2aa53ab394R1377) to a `Vec`
 2022-06-03 23:29:30 +00:00
Matthias Krüger
a88d94b072
Rollup merge of #97702 - cjgillot:no-universal-did, r=spastorino 
Remove useless LocalDefId in ImplTraitContext::Universal.
 2022-06-04 00:42:52 +02:00
Matthias Krüger
401be78f2c
Rollup merge of #97656 - EdwinRy:error_ast_low_type_contraint_parentheses, r=cjgillot 
Add a suggestion to replace parentheses with angle brackets on associated trait constraint

This implements a requested suggestion FIXME in [`compiler/rustc_ast_lowering/src/lib.rs` ](9598b4b594/compiler/rustc_ast_lowering/src/lib.rs (L921))

The suggestion asks for the parentheses to either be replaced with angle brackets or removed completely depending on whether there are arguments provided within.

![image](https://user-images.githubusercontent.com/20026256/171770414-ab60bfe2-ae27-44b0-964d-9ffcc32a7475.png)

![image](https://user-images.githubusercontent.com/20026256/171770383-ca8a2766-b3aa-43e3-8ba4-ae18874886ce.png)

r? `@oli-obk`
 2022-06-04 00:42:50 +02:00
Camille GILLOT
4120080d66 Remove useless LocalDefId in ImplTraitContext::Universal. 2022-06-03 20:17:12 +02:00
EdwinRy
cd03fe18d8 Suggest replace parentheses with angle brackets 2022-06-03 16:48:59 +01:00
Camille GILLOT
b1294e86bb Manipulate lifetimes by LocalDefId for region resolution. 2022-06-03 12:03:20 +02:00
bors
3a90bedb33 Auto merge of #96296 - cjgillot:remove-label-lt-shadow, r=petrochenkov 
Remove label/lifetime shadowing warnings

This PR removes some pre-1.0 shadowing warnings for labels and lifetimes.

The current behaviour of the compiler is to warn
* labels that shadow unrelated labels in the same function --> removed
```rust
'a: loop {}
'a: loop {} // STOP WARNING
```

* labels that shadow enclosing labels --> kept, but only if shadowing is hygienic
```rust
'a: loop {
  'a: loop {} // KEEP WARNING
}
```

* labels that shadow lifetime --> removed
```rust
fn foo<'a>() {
  'a: loop {} // STOP WARNING
}
```

* lifetimes that shadow labels --> removed
```rust
'a: loop {
  let b = Box::new(|x: &i8| *x) as Box<dyn for <'a> Fn(&'a i8) -> i8>; // STOP WARNING
}
```

* lifetimes that shadow lifetimes --> kept
```rust
fn foo<'a>() {
  let b = Box::new(|x: &i8| *x) as Box<dyn for <'a> Fn(&'a i8) -> i8>; // KEEP WARNING
}
```

Closes https://github.com/rust-lang/rust/issues/31745.

-----

From `@petrochenkov` in https://github.com/rust-lang/rust/pull/95781#issuecomment-1105199014
> I think we should remove these silly checks entirely.
> They were introduced long time ago in case some new language features appear and require this space.
> Now we have another mechanism for such language changes - editions, and if "lifetimes in expressions" or something like that needs to be introduced it could be introduced as an edition change.
> However, there was no plans to introduce anything like for years, so it's unlikely that even the edition mechanism will be necessary.

r? rust-lang/lang
 2022-06-03 07:27:09 +00:00
Camille GILLOT
c75409d5e4 Do not lower generic lifetime params when AST resolution emitted an error. 2022-06-03 08:26:10 +02:00
Santiago Pastorino
b051fcaefe
Make params be SmallVec as originally was 2022-06-02 23:42:49 -03:00
bors
42bcd41d4d Auto merge of #97598 - spastorino:simplify-universal-impl-trait-lowering, r=cjgillot 
Simplify universal impl trait lowering

Closes #96644

r? `@cjgillot`
 2022-06-02 21:37:38 +00:00
Santiago Pastorino
15a82d6917
Always assert that impl_trait_def|bounds are empty at start 2022-06-01 15:38:37 -03:00
Santiago Pastorino
67deaf9fea
instrument lower_fn_decl 2022-06-01 15:02:15 -03:00
Santiago Pastorino
2de2520e94
Split extend + inner chain into to extend calls 2022-06-01 14:48:14 -03:00
Santiago Pastorino
b3bc438f56
Add debug_assert comment 
Co-authored-by: Camille Gillot <gillot.camille@gmail.com>
 2022-06-01 14:43:16 -03:00
est31
0a24b9493b Remove #[rustc_box] attr during lowering 2022-06-01 02:44:12 +02:00
est31
cfc21deebd Add #[rustc_box] 
This commit adds an alternative content boxing syntax,
and uses it inside alloc.

The usage inside the very performance relevant code in
liballoc is the only remaining relevant usage of box syntax
in the compiler (outside of tests, which are comparatively
easy to port).

box syntax was originally designed to be used by all Rust
developers. This introduces a replacement syntax more tailored
to only being used inside the Rust compiler, and with it,
lays the groundwork for eventually removing box syntax.
 2022-06-01 02:28:34 +02:00
Santiago Pastorino
15f2b119b1
Fix lower_generics rustdocs 2022-05-31 17:40:50 -03:00
Santiago Pastorino
2ade55d908
Inline lower_generics_mut and remove GenericsCtor 2022-05-31 16:57:16 -03:00
Santiago Pastorino
d327db9319
Remove ImplTraitContext::reborrow 2022-05-31 16:49:27 -03:00
Santiago Pastorino
208ffbbe86
derive Copy, Clone, PartialEq, Eq for ImplTraitContext 2022-05-31 16:47:53 -03:00
Santiago Pastorino
bd3a097d64
Move lower_generics definition to item.rs 2022-05-31 15:33:51 -03:00
Santiago Pastorino
d5ab8b2f5b
Rename add_implicit_generics to lower_generics 2022-05-31 15:32:05 -03:00
Santiago Pastorino
e080298e35
Replace calls to lower_generics with calls to add_implicit_generics 2022-05-31 15:30:14 -03:00
Santiago Pastorino
190b4a7152
Add itctx: ImplTraitContext arg to add_implicit_generics 2022-05-31 14:55:49 -03:00
Santiago Pastorino
1a71103c93
Take and restore fields in with_hir_id_owner calls 2022-05-31 14:53:32 -03:00
Santiago Pastorino
3d6eae8cd2
Move defs and bounds from Universal to LoweringContext 2022-05-31 12:40:34 -03:00
Vadim Petrochenkov
8e8fb4f49e rustc_parse: Move AST -> TokenStream conversion logic to rustc_ast 2022-05-22 12:01:07 +03:00