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This shrinks `hir::Pat` from 88 to 72 bytes.
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`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.
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r=cjgillot
Separate the receiver from arguments in HIR
Related to #100232
cc `@cjgillot`
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- 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`.
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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`.
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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.
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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.
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rendering path
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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``
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This helps bring `hir::Expr` size down, `Closure` was the biggest
variant, especially after `for<>` additions.
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a lot of the `&`s and `ref`s were redundant
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global_asm!
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Previously it always returned `MacroKind::Bang` while some of those macros are actually attributes and derives
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Remove defaultness from ImplItem.
This information is not really used anywhere, except HIR pretty-printing. This makes ImplItem and TraitItem more similar.
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ProjectionPredicate should be able to handle both associated types and consts so this adds the
first step of that. It mainly just pipes types all the way down, not entirely sure how to handle
consts, but hopefully that'll come with time.
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Remove deprecated LLVM-style inline assembly
The `llvm_asm!` was deprecated back in #87590 1.56.0, with intention to remove
it once `asm!` was stabilized, which already happened in #91728 1.59.0. Now it
is time to remove `llvm_asm!` to avoid continued maintenance cost.
Closes #70173.
Closes #92794.
Closes #87612.
Closes #82065.
cc `@rust-lang/wg-inline-asm`
r? `@Amanieu`
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Rename Printer constructor from mk_printer() to Printer::new()
The original naming is left over from 2011 which was before impl blocks and associated functions existed.
https://github.com/rust-lang/rust/blob/21313d623a505086b2973f30c19db4f1d6ec8f61/src/comp/pretty/pp.rs
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Fix unclosed boxes in pretty printing of TraitAlias
This was causing trait aliases to not even render at all in stringified / pretty printed output.
```rust
macro_rules! repro {
($item:item) => {
stringify!($item)
};
}
fn main() {
println!("{:?}", repro!(pub trait Trait<T> = Sized where T: 'a;));
}
```
Before: `""`
After: `"pub trait Trait<T> = Sized where T: 'a;"`
The fix is copied from how `head`/`end` for `ItemKind::Use`, `ItemKind::ExternCrate`, and `ItemKind::Mod` are all done in the pretty printer:
https://github.com/rust-lang/rust/blob/dd3ac41495e85a9b7b5cb3186379d02ce17e51fe/compiler/rustc_ast_pretty/src/pprust/state.rs#L1178-L1184
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Allow `_` as the length of array types and repeat expressions
r? `@BoxyUwU` cc `@varkor`
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Fix spacing in pretty printed PatKind::Struct with no fields
Follow-up to #92238 fixing one of the FIXMEs.
```rust
macro_rules! repro {
($pat:pat) => {
stringify!($pat)
};
}
fn main() {
println!("{}", repro!(Struct {}));
}
```
Before: <code>Struct { }</code>
After: <code>Struct {}</code>
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