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.
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`
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.
21313d623a/src/comp/pretty/pp.rs
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:
dd3ac41495/compiler/rustc_ast_pretty/src/pprust/state.rs (L1178-L1184)
Remove &self from PrintState::to_string
The point of `PrintState::to_string` is to create a `State` and evaluate the caller's closure on it:
e9fbe79292/compiler/rustc_ast_pretty/src/pprust/state.rs (L868-L872)
Making the caller *also* construct and pass in a `State`, which is then ignored, was confusing.
Fix spacing and ordering of words in pretty printed Impl
Follow-up to #92238 fixing one of the FIXMEs.
```rust
macro_rules! repro {
($item:item) => {
stringify!($item)
};
}
fn main() {
println!("{}", repro!(impl<T> Struct<T> {}));
println!("{}", repro!(impl<T> const Trait for T {}));
}
```
Before: `impl <T> Struct<T> {}`
After: `impl<T> Struct<T> {}`
Before: `impl const <T> Trait for T {}` 😿
After: `impl<T> const Trait for T {}`
Fix whitespace in pretty printed PatKind::Range
Follow-up to #92238 fixing one of the FIXMEs.
```rust
macro_rules! repro {
($pat:pat) => {
stringify!($pat)
};
}
fn main() {
println!("{}", repro!(0..=1));
}
```
Before: `0 ..=1`
After: `0..=1`
The canonical spacing applied by rustfmt has no space after the lower expr. Rustc's parser diagnostics also do not put a space there:
df96fb166f/compiler/rustc_parse/src/parser/pat.rs (L754)
Print space after formal generic params in fn type
Follow-up to #92238 fixing one of the FIXMEs.
```rust
macro_rules! repro {
($ty:ty) => {
stringify!($ty)
};
}
fn main() {
println!("{}", repro!(for<'a> fn(&'a u8)));
}
```
Before: `for<'a>fn(&'a u8)`
After: `for<'a> fn(&'a u8)`
The pretty printer's `print_formal_generic_params` already prints formal generic params correctly with a space, we just need to call it when printing BareFn types instead of reimplementing the printing incorrectly without a space.
83b15bfe1c/compiler/rustc_ast_pretty/src/pprust/state.rs (L1394-L1400)
Pretty print empty blocks as {}
**Example:**
```rust
macro_rules! p {
($e:expr) => {
println!("{}", stringify!($e));
};
($i:item) => {
println!("{}", stringify!($i));
};
}
fn main() {
p!(if true {});
p!(struct S {});
}
```
**Before:**
```console
if true { }
struct S {
}
```
**After:**
```console
if true {}
struct S {}
```
This affects [`dbg!`](https://doc.rust-lang.org/std/macro.dbg.html), as well as ecosystem uses of stringify such as in [`anyhow::ensure!`](https://docs.rs/anyhow/1/anyhow/macro.ensure.html). Printing a `{ }` in today's heavily rustfmt'd world comes out looking jarring/sloppy.
TraitKind -> Trait
TyAliasKind -> TyAlias
ImplKind -> Impl
FnKind -> Fn
All `*Kind`s in AST are supposed to be enums.
Tuple structs are converted to braced structs for the types above, and fields are reordered in syntactic order.
Also, mutable AST visitor now correctly visit spans in defaultness, unsafety, impl polarity and constness.
This reverts commit 059b68dd67.
Note that this was manually adjusted to retain some of the refactoring
introduced by commit 059b68dd67, so that it could
likewise retain the correction introduced in commit
5b4bc05fa5
