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chore: checkpoint before Python removal

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Sienna Meridian Satterwhite
2026-03-26 22:33:59 +00:00
parent 683cec9307
commit e568ddf82a
29972 changed files with 11269302 additions and 2 deletions
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1
vendor/async-trait/.cargo-checksum.json vendored Normal file
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vendor/async-trait/.cargo_vcs_info.json vendored Normal file
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vendor/async-trait/.github/FUNDING.yml vendored Normal file
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github: dtolnay

109
vendor/async-trait/.github/workflows/ci.yml vendored Normal file
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name: CI
on:
push:
pull_request:
workflow_dispatch:
schedule: [cron: "40 1 * * *"]
permissions:
contents: read
env:
RUSTFLAGS: -Dwarnings
jobs:
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uses: dtolnay/.github/.github/workflows/pre_ci.yml@master
test:
name: Rust ${{matrix.rust}}
needs: pre_ci
if: needs.pre_ci.outputs.continue
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
rust: [nightly, beta, stable, 1.75.0, 1.70.0, 1.56.0]
timeout-minutes: 45
steps:
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with:
toolchain: ${{matrix.rust}}
- name: Enable type layout randomization
run: echo RUSTFLAGS=${RUSTFLAGS}\ -Zrandomize-layout >> $GITHUB_ENV
if: matrix.rust == 'nightly'
- name: Enable nightly-only tests
run: echo RUSTFLAGS=${RUSTFLAGS}\ --cfg=async_trait_nightly_testing >> $GITHUB_ENV
if: matrix.rust == 'nightly'
- run: cargo check
- run: cargo test
if: matrix.rust != '1.56.0'
- uses: actions/upload-artifact@v4
if: matrix.rust == 'nightly' && always()
with:
name: Cargo.lock
path: Cargo.lock
continue-on-error: true
minimal:
name: Minimal versions
needs: pre_ci
if: needs.pre_ci.outputs.continue
runs-on: ubuntu-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@nightly
- run: cargo generate-lockfile -Z minimal-versions
- run: cargo check --locked
doc:
name: Documentation
needs: pre_ci
if: needs.pre_ci.outputs.continue
runs-on: ubuntu-latest
timeout-minutes: 45
env:
RUSTDOCFLAGS: -Dwarnings
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@nightly
- uses: dtolnay/install@cargo-docs-rs
- run: cargo docs-rs
clippy:
name: Clippy
runs-on: ubuntu-latest
if: github.event_name != 'pull_request'
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@clippy
- run: cargo clippy --tests -- -Dclippy::all -Dclippy::pedantic
miri:
name: Miri
needs: pre_ci
if: needs.pre_ci.outputs.continue
runs-on: ubuntu-latest
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@miri
- run: cargo miri setup
- run: cargo miri test
env:
MIRIFLAGS: -Zmiri-strict-provenance
outdated:
name: Outdated
runs-on: ubuntu-latest
if: github.event_name != 'pull_request'
timeout-minutes: 45
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
- uses: dtolnay/install@cargo-outdated
- run: cargo outdated --workspace --exit-code 1

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91
vendor/async-trait/Cargo.toml vendored Normal file
View File

@@ -0,0 +1,91 @@
# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
edition = "2021"
rust-version = "1.56"
name = "async-trait"
version = "0.1.89"
authors = ["David Tolnay <dtolnay@gmail.com>"]
build = false
exclude = ["build.rs"]
autolib = false
autobins = false
autoexamples = false
autotests = false
autobenches = false
description = "Type erasure for async trait methods"
documentation = "https://docs.rs/async-trait"
readme = "README.md"
keywords = ["async"]
categories = [
"asynchronous",
"no-std",
]
license = "MIT OR Apache-2.0"
repository = "https://github.com/dtolnay/async-trait"
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
rustdoc-args = [
"--generate-link-to-definition",
"--extern-html-root-url=core=https://doc.rust-lang.org",
"--extern-html-root-url=alloc=https://doc.rust-lang.org",
"--extern-html-root-url=std=https://doc.rust-lang.org",
"--extern-html-root-url=proc_macro=https://doc.rust-lang.org",
]
[lib]
name = "async_trait"
path = "src/lib.rs"
proc-macro = true
[[test]]
name = "compiletest"
path = "tests/compiletest.rs"
[[test]]
name = "test"
path = "tests/test.rs"
[dependencies.proc-macro2]
version = "1.0.74"
[dependencies.quote]
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[dependencies.syn]
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features = [
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"full",
"parsing",
"printing",
"proc-macro",
"visit-mut",
]
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[dev-dependencies.futures]
version = "0.3.30"
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version = "0.1.27"
[dev-dependencies.trybuild]
version = "1.0.81"
features = ["diff"]

176
vendor/async-trait/LICENSE-APACHE vendored Normal file
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@@ -0,0 +1,176 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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"License" shall mean the terms and conditions for use, reproduction,
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"You" (or "Your") shall mean an individual or Legal Entity
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23
vendor/async-trait/LICENSE-MIT vendored Normal file
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Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without
limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice
shall be included in all copies or substantial portions
of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

205
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Async trait methods
===================
[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/async--trait-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/async-trait)
[<img alt="crates.io" src="https://img.shields.io/crates/v/async-trait.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/async-trait)
[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-async--trait-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/async-trait)
[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/async-trait/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/async-trait/actions?query=branch%3Amaster)
The stabilization of async functions in traits in Rust 1.75 did not include
support for using traits containing async functions as `dyn Trait`. Trying to
use dyn with an async trait produces the following error:
```rust
pub trait Trait {
async fn f(&self);
}
pub fn make() -> Box<dyn Trait> {
unimplemented!()
}
```
```console
error[E0038]: the trait `Trait` is not dyn compatible
--> src/main.rs:5:22
|
5 | pub fn make() -> Box<dyn Trait> {
| ^^^^^^^^^ `Trait` is not dyn compatible
|
note: for a trait to be dyn compatible it needs to allow building a vtable
for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
--> src/main.rs:2:14
|
1 | pub trait Trait {
| ----- this trait is not dyn compatible...
2 | async fn f(&self);
| ^ ...because method `f` is `async`
= help: consider moving `f` to another trait
```
This crate provides an attribute macro to make async fn in traits work with dyn
traits.
Please refer to [*why async fn in traits are hard*][hard] for a deeper analysis
of how this implementation differs from what the compiler and language deliver
natively.
[hard]: https://smallcultfollowing.com/babysteps/blog/2019/10/26/async-fn-in-traits-are-hard/
<br>
## Example
This example implements the core of a highly effective advertising platform
using async fn in a trait.
The only thing to notice here is that we write an `#[async_trait]` macro on top
of traits and trait impls that contain async fn, and then they work. We get to
have `Vec<Box<dyn Advertisement + Sync>>` or `&[&dyn Advertisement]`, for
example.
```rust
use async_trait::async_trait;
#[async_trait]
trait Advertisement {
async fn run(&self);
}
struct Modal;
#[async_trait]
impl Advertisement for Modal {
async fn run(&self) {
self.render_fullscreen().await;
for _ in 0..4u16 {
remind_user_to_join_mailing_list().await;
}
self.hide_for_now().await;
}
}
struct AutoplayingVideo {
media_url: String,
}
#[async_trait]
impl Advertisement for AutoplayingVideo {
async fn run(&self) {
let stream = connect(&self.media_url).await;
stream.play().await;
// Video probably persuaded user to join our mailing list!
Modal.run().await;
}
}
```
<br>
## Supported features
It is the intention that all features of Rust traits should work nicely with
\#\[async_trait\], but the edge cases are numerous. *Please file an issue if you
see unexpected borrow checker errors, type errors, or warnings.* There is no use
of `unsafe` in the expanded code, so rest assured that if your code compiles it
can't be that badly broken.
- &#128077;&ensp;Self by value, by reference, by mut reference, or no self;
- &#128077;&ensp;Any number of arguments, any return value;
- &#128077;&ensp;Generic type parameters and lifetime parameters;
- &#128077;&ensp;Associated types;
- &#128077;&ensp;Having async and non-async functions in the same trait;
- &#128077;&ensp;Default implementations provided by the trait;
- &#128077;&ensp;Elided lifetimes.
<br>
## Explanation
Async fns get transformed into methods that return `Pin<Box<dyn Future + Send +
'async_trait>>` and delegate to an async block.
For example the `impl Advertisement for AutoplayingVideo` above would be
expanded as:
```rust
impl Advertisement for AutoplayingVideo {
fn run<'async_trait>(
&'async_trait self,
) -> Pin<Box<dyn std::future::Future<Output = ()> + Send + 'async_trait>>
where
Self: Sync + 'async_trait,
{
Box::pin(async move {
/* the original method body */
})
}
}
```
<br>
## Non-threadsafe futures
Not all async traits need futures that are `dyn Future + Send`. To avoid having
Send and Sync bounds placed on the async trait methods, invoke the async trait
macro as `#[async_trait(?Send)]` on both the trait and the impl blocks.
<br>
## Elided lifetimes
Be aware that async fn syntax does not allow lifetime elision outside of `&` and
`&mut` references. (This is true even when not using #\[async_trait\].)
Lifetimes must be named or marked by the placeholder `'_`.
Fortunately the compiler is able to diagnose missing lifetimes with a good error
message.
```rust
type Elided<'a> = &'a usize;
#[async_trait]
trait Test {
async fn test(not_okay: Elided, okay: &usize) {}
}
```
```console
error[E0726]: implicit elided lifetime not allowed here
--> src/main.rs:9:29
|
9 | async fn test(not_okay: Elided, okay: &usize) {}
| ^^^^^^- help: indicate the anonymous lifetime: `<'_>`
```
The fix is to name the lifetime or use `'_`.
```rust
#[async_trait]
trait Test {
// either
async fn test<'e>(elided: Elided<'e>) {}
// or
async fn test(elided: Elided<'_>) {}
}
```
<br>
#### License
<sup>
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
</sup>
<br>
<sub>
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.
</sub>

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use proc_macro2::Span;
use syn::parse::{Error, Parse, ParseStream, Result};
use syn::Token;
#[derive(Copy, Clone)]
pub struct Args {
pub local: bool,
}
mod kw {
syn::custom_keyword!(Send);
}
impl Parse for Args {
fn parse(input: ParseStream) -> Result<Self> {
match try_parse(input) {
Ok(args) if input.is_empty() => Ok(args),
_ => Err(error()),
}
}
}
fn try_parse(input: ParseStream) -> Result<Args> {
if input.peek(Token![?]) {
input.parse::<Token![?]>()?;
input.parse::<kw::Send>()?;
Ok(Args { local: true })
} else {
Ok(Args { local: false })
}
}
fn error() -> Error {
let msg = "expected #[async_trait] or #[async_trait(?Send)]";
Error::new(Span::call_site(), msg)
}

50
vendor/async-trait/src/bound.rs vendored Normal file
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use proc_macro2::{Ident, Span, TokenStream};
use quote::{quote, ToTokens};
use syn::punctuated::Punctuated;
use syn::{Token, TypeParamBound};
pub type Supertraits = Punctuated<TypeParamBound, Token![+]>;
pub enum InferredBound {
Send,
Sync,
}
pub fn has_bound(supertraits: &Supertraits, bound: &InferredBound) -> bool {
for supertrait in supertraits {
if let TypeParamBound::Trait(supertrait) = supertrait {
if supertrait.path.is_ident(bound)
|| supertrait.path.segments.len() == 3
&& (supertrait.path.segments[0].ident == "std"
|| supertrait.path.segments[0].ident == "core")
&& supertrait.path.segments[1].ident == "marker"
&& supertrait.path.segments[2].ident == *bound
{
return true;
}
}
}
false
}
impl InferredBound {
fn as_str(&self) -> &str {
match self {
InferredBound::Send => "Send",
InferredBound::Sync => "Sync",
}
}
}
impl ToTokens for InferredBound {
fn to_tokens(&self, tokens: &mut TokenStream) {
let ident = Ident::new(self.as_str(), Span::call_site());
quote!(::core::marker::#ident).to_tokens(tokens);
}
}
impl PartialEq<InferredBound> for Ident {
fn eq(&self, bound: &InferredBound) -> bool {
self == bound.as_str()
}
}

504
vendor/async-trait/src/expand.rs vendored Normal file
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use crate::bound::{has_bound, InferredBound, Supertraits};
use crate::lifetime::{AddLifetimeToImplTrait, CollectLifetimes};
use crate::parse::Item;
use crate::receiver::{has_self_in_block, has_self_in_sig, mut_pat, ReplaceSelf};
use crate::verbatim::VerbatimFn;
use proc_macro2::{Span, TokenStream};
use quote::{format_ident, quote, quote_spanned, ToTokens};
use std::collections::BTreeSet as Set;
use std::mem;
use syn::punctuated::Punctuated;
use syn::visit_mut::{self, VisitMut};
use syn::{
parse_quote, parse_quote_spanned, Attribute, Block, FnArg, GenericArgument, GenericParam,
Generics, Ident, ImplItem, Lifetime, LifetimeParam, Pat, PatIdent, PathArguments, Receiver,
ReturnType, Signature, Token, TraitItem, Type, TypeInfer, TypePath, WhereClause,
};
impl ToTokens for Item {
fn to_tokens(&self, tokens: &mut TokenStream) {
match self {
Item::Trait(item) => item.to_tokens(tokens),
Item::Impl(item) => item.to_tokens(tokens),
}
}
}
#[derive(Clone, Copy)]
enum Context<'a> {
Trait {
generics: &'a Generics,
supertraits: &'a Supertraits,
},
Impl {
impl_generics: &'a Generics,
associated_type_impl_traits: &'a Set<Ident>,
},
}
impl Context<'_> {
fn lifetimes<'a>(&'a self, used: &'a [Lifetime]) -> impl Iterator<Item = &'a LifetimeParam> {
let generics = match self {
Context::Trait { generics, .. } => generics,
Context::Impl { impl_generics, .. } => impl_generics,
};
generics.params.iter().filter_map(move |param| {
if let GenericParam::Lifetime(param) = param {
if used.contains(&param.lifetime) {
return Some(param);
}
}
None
})
}
}
pub fn expand(input: &mut Item, is_local: bool) {
match input {
Item::Trait(input) => {
let context = Context::Trait {
generics: &input.generics,
supertraits: &input.supertraits,
};
for inner in &mut input.items {
if let TraitItem::Fn(method) = inner {
let sig = &mut method.sig;
if sig.asyncness.is_some() {
let block = &mut method.default;
let mut has_self = has_self_in_sig(sig);
method.attrs.push(parse_quote!(#[must_use]));
if let Some(block) = block {
has_self |= has_self_in_block(block);
transform_block(context, sig, block);
method.attrs.push(lint_suppress_with_body());
} else {
method.attrs.push(lint_suppress_without_body());
}
let has_default = method.default.is_some();
transform_sig(context, sig, has_self, has_default, is_local);
}
}
}
}
Item::Impl(input) => {
let mut associated_type_impl_traits = Set::new();
for inner in &input.items {
if let ImplItem::Type(assoc) = inner {
if let Type::ImplTrait(_) = assoc.ty {
associated_type_impl_traits.insert(assoc.ident.clone());
}
}
}
let context = Context::Impl {
impl_generics: &input.generics,
associated_type_impl_traits: &associated_type_impl_traits,
};
for inner in &mut input.items {
match inner {
ImplItem::Fn(method) if method.sig.asyncness.is_some() => {
let sig = &mut method.sig;
let block = &mut method.block;
let has_self = has_self_in_sig(sig);
transform_block(context, sig, block);
transform_sig(context, sig, has_self, false, is_local);
method.attrs.push(lint_suppress_with_body());
}
ImplItem::Verbatim(tokens) => {
let mut method = match syn::parse2::<VerbatimFn>(tokens.clone()) {
Ok(method) if method.sig.asyncness.is_some() => method,
_ => continue,
};
let sig = &mut method.sig;
let has_self = has_self_in_sig(sig);
transform_sig(context, sig, has_self, false, is_local);
method.attrs.push(lint_suppress_with_body());
*tokens = quote!(#method);
}
_ => {}
}
}
}
}
}
fn lint_suppress_with_body() -> Attribute {
parse_quote! {
#[allow(
elided_named_lifetimes,
clippy::async_yields_async,
clippy::diverging_sub_expression,
clippy::let_unit_value,
clippy::needless_arbitrary_self_type,
clippy::no_effect_underscore_binding,
clippy::shadow_same,
clippy::type_complexity,
clippy::type_repetition_in_bounds,
clippy::used_underscore_binding
)]
}
}
fn lint_suppress_without_body() -> Attribute {
parse_quote! {
#[allow(
elided_named_lifetimes,
clippy::type_complexity,
clippy::type_repetition_in_bounds
)]
}
}
// Input:
// async fn f<T>(&self, x: &T) -> Ret;
//
// Output:
// fn f<'life0, 'life1, 'async_trait, T>(
// &'life0 self,
// x: &'life1 T,
// ) -> Pin<Box<dyn Future<Output = Ret> + Send + 'async_trait>>
// where
// 'life0: 'async_trait,
// 'life1: 'async_trait,
// T: 'async_trait,
// Self: Sync + 'async_trait;
fn transform_sig(
context: Context,
sig: &mut Signature,
has_self: bool,
has_default: bool,
is_local: bool,
) {
sig.fn_token.span = sig.asyncness.take().unwrap().span;
let (ret_arrow, ret) = match &sig.output {
ReturnType::Default => (quote!(->), quote!(())),
ReturnType::Type(arrow, ret) => (quote!(#arrow), quote!(#ret)),
};
let mut lifetimes = CollectLifetimes::new();
for arg in &mut sig.inputs {
match arg {
FnArg::Receiver(arg) => lifetimes.visit_receiver_mut(arg),
FnArg::Typed(arg) => lifetimes.visit_type_mut(&mut arg.ty),
}
}
for param in &mut sig.generics.params {
match param {
GenericParam::Type(param) => {
let param_name = &param.ident;
let span = match param.colon_token.take() {
Some(colon_token) => colon_token.span,
None => param_name.span(),
};
if param.attrs.is_empty() {
let bounds = mem::take(&mut param.bounds);
where_clause_or_default(&mut sig.generics.where_clause)
.predicates
.push(parse_quote_spanned!(span=> #param_name: 'async_trait + #bounds));
} else {
param.bounds.push(parse_quote!('async_trait));
}
}
GenericParam::Lifetime(param) => {
let param_name = &param.lifetime;
let span = match param.colon_token.take() {
Some(colon_token) => colon_token.span,
None => param_name.span(),
};
if param.attrs.is_empty() {
let bounds = mem::take(&mut param.bounds);
where_clause_or_default(&mut sig.generics.where_clause)
.predicates
.push(parse_quote_spanned!(span=> #param: 'async_trait + #bounds));
} else {
param.bounds.push(parse_quote!('async_trait));
}
}
GenericParam::Const(_) => {}
}
}
for param in context.lifetimes(&lifetimes.explicit) {
let param = &param.lifetime;
let span = param.span();
where_clause_or_default(&mut sig.generics.where_clause)
.predicates
.push(parse_quote_spanned!(span=> #param: 'async_trait));
}
if sig.generics.lt_token.is_none() {
sig.generics.lt_token = Some(Token![<](sig.ident.span()));
}
if sig.generics.gt_token.is_none() {
sig.generics.gt_token = Some(Token![>](sig.paren_token.span.join()));
}
for elided in lifetimes.elided {
sig.generics.params.push(parse_quote!(#elided));
where_clause_or_default(&mut sig.generics.where_clause)
.predicates
.push(parse_quote_spanned!(elided.span()=> #elided: 'async_trait));
}
sig.generics.params.push(parse_quote!('async_trait));
if has_self {
let bounds: &[InferredBound] = if is_local {
&[]
} else if let Some(receiver) = sig.receiver() {
match receiver.ty.as_ref() {
// self: &Self
Type::Reference(ty) if ty.mutability.is_none() => &[InferredBound::Sync],
// self: Arc<Self>
Type::Path(ty)
if {
let segment = ty.path.segments.last().unwrap();
segment.ident == "Arc"
&& match &segment.arguments {
PathArguments::AngleBracketed(arguments) => {
arguments.args.len() == 1
&& match &arguments.args[0] {
GenericArgument::Type(Type::Path(arg)) => {
arg.path.is_ident("Self")
}
_ => false,
}
}
_ => false,
}
} =>
{
&[InferredBound::Sync, InferredBound::Send]
}
_ => &[InferredBound::Send],
}
} else {
&[InferredBound::Send]
};
let bounds = bounds.iter().filter(|bound| match context {
Context::Trait { supertraits, .. } => has_default && !has_bound(supertraits, bound),
Context::Impl { .. } => false,
});
where_clause_or_default(&mut sig.generics.where_clause)
.predicates
.push(parse_quote! {
Self: #(#bounds +)* 'async_trait
});
}
for (i, arg) in sig.inputs.iter_mut().enumerate() {
match arg {
FnArg::Receiver(receiver) => {
if receiver.reference.is_none() {
receiver.mutability = None;
}
}
FnArg::Typed(arg) => {
if match *arg.ty {
Type::Reference(_) => false,
_ => true,
} {
if let Pat::Ident(pat) = &mut *arg.pat {
pat.by_ref = None;
pat.mutability = None;
} else {
let positional = positional_arg(i, &arg.pat);
let m = mut_pat(&mut arg.pat);
arg.pat = parse_quote!(#m #positional);
}
}
AddLifetimeToImplTrait.visit_type_mut(&mut arg.ty);
}
}
}
let bounds = if is_local {
quote!('async_trait)
} else {
quote!(::core::marker::Send + 'async_trait)
};
sig.output = parse_quote! {
#ret_arrow ::core::pin::Pin<Box<
dyn ::core::future::Future<Output = #ret> + #bounds
>>
};
}
// Input:
// async fn f<T>(&self, x: &T, (a, b): (A, B)) -> Ret {
// self + x + a + b
// }
//
// Output:
// Box::pin(async move {
// let ___ret: Ret = {
// let __self = self;
// let x = x;
// let (a, b) = __arg1;
//
// __self + x + a + b
// };
//
// ___ret
// })
fn transform_block(context: Context, sig: &mut Signature, block: &mut Block) {
let mut replace_self = false;
let decls = sig
.inputs
.iter()
.enumerate()
.map(|(i, arg)| match arg {
FnArg::Receiver(Receiver {
self_token,
mutability,
..
}) => {
replace_self = true;
let ident = Ident::new("__self", self_token.span);
quote!(let #mutability #ident = #self_token;)
}
FnArg::Typed(arg) => {
// If there is a #[cfg(...)] attribute that selectively enables
// the parameter, forward it to the variable.
//
// This is currently not applied to the `self` parameter.
let attrs = arg.attrs.iter().filter(|attr| attr.path().is_ident("cfg"));
if let Type::Reference(_) = *arg.ty {
quote!()
} else if let Pat::Ident(PatIdent {
ident, mutability, ..
}) = &*arg.pat
{
quote! {
#(#attrs)*
let #mutability #ident = #ident;
}
} else {
let pat = &arg.pat;
let ident = positional_arg(i, pat);
if let Pat::Wild(_) = **pat {
quote! {
#(#attrs)*
let #ident = #ident;
}
} else {
quote! {
#(#attrs)*
let #pat = {
let #ident = #ident;
#ident
};
}
}
}
}
})
.collect::<Vec<_>>();
if replace_self {
ReplaceSelf.visit_block_mut(block);
}
let let_ret = match &mut sig.output {
ReturnType::Default => quote! {
#(#decls)*
let _: () = #block;
},
ReturnType::Type(_, ret) => {
if contains_associated_type_impl_trait(context, ret) {
if decls.is_empty() {
let stmts = &block.stmts;
quote!(#(#stmts)*)
} else {
quote!(#(#decls)* #block)
}
} else {
let mut ret = ret.clone();
replace_impl_trait_with_infer(&mut ret);
quote! {
if let ::core::option::Option::Some(__ret) = ::core::option::Option::None::<#ret> {
#[allow(unreachable_code)]
return __ret;
}
#(#decls)*
let __ret: #ret = #block;
#[allow(unreachable_code)]
__ret
}
}
}
};
let box_pin = quote_spanned!(sig.asyncness.unwrap().span=>
Box::pin(async move { #let_ret })
);
block.stmts = parse_quote!(#box_pin);
}
fn positional_arg(i: usize, pat: &Pat) -> Ident {
let span = syn::spanned::Spanned::span(pat).resolved_at(Span::mixed_site());
format_ident!("__arg{}", i, span = span)
}
fn contains_associated_type_impl_trait(context: Context, ret: &mut Type) -> bool {
struct AssociatedTypeImplTraits<'a> {
set: &'a Set<Ident>,
contains: bool,
}
impl<'a> VisitMut for AssociatedTypeImplTraits<'a> {
fn visit_type_path_mut(&mut self, ty: &mut TypePath) {
if ty.qself.is_none()
&& ty.path.segments.len() == 2
&& ty.path.segments[0].ident == "Self"
&& self.set.contains(&ty.path.segments[1].ident)
{
self.contains = true;
}
visit_mut::visit_type_path_mut(self, ty);
}
}
match context {
Context::Trait { .. } => false,
Context::Impl {
associated_type_impl_traits,
..
} => {
let mut visit = AssociatedTypeImplTraits {
set: associated_type_impl_traits,
contains: false,
};
visit.visit_type_mut(ret);
visit.contains
}
}
}
fn where_clause_or_default(clause: &mut Option<WhereClause>) -> &mut WhereClause {
clause.get_or_insert_with(|| WhereClause {
where_token: Default::default(),
predicates: Punctuated::new(),
})
}
fn replace_impl_trait_with_infer(ty: &mut Type) {
struct ReplaceImplTraitWithInfer;
impl VisitMut for ReplaceImplTraitWithInfer {
fn visit_type_mut(&mut self, ty: &mut Type) {
if let Type::ImplTrait(impl_trait) = ty {
*ty = Type::Infer(TypeInfer {
underscore_token: Token![_](impl_trait.impl_token.span),
});
}
visit_mut::visit_type_mut(self, ty);
}
}
ReplaceImplTraitWithInfer.visit_type_mut(ty);
}

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//! [![github]](https://github.com/dtolnay/async-trait)&ensp;[![crates-io]](https://crates.io/crates/async-trait)&ensp;[![docs-rs]](https://docs.rs/async-trait)
//!
//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
//!
//! <br>
//!
//! <h4>Type erasure for async trait methods</h4>
//!
//! The stabilization of async functions in traits in Rust 1.75 did not include
//! support for using traits containing async functions as `dyn Trait`. Trying
//! to use dyn with an async trait produces the following error:
//!
//! ```compile_fail
//! pub trait Trait {
//! async fn f(&self);
//! }
//!
//! pub fn make() -> Box<dyn Trait> {
//! unimplemented!()
//! }
//! ```
//!
//! ```text
//! error[E0038]: the trait `Trait` is not dyn compatible
//! --> src/main.rs:5:22
//! |
//! 5 | pub fn make() -> Box<dyn Trait> {
//! | ^^^^^^^^^ `Trait` is not dyn compatible
//! |
//! note: for a trait to be dyn compatible it needs to allow building a vtable
//! for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
//! --> src/main.rs:2:14
//! |
//! 1 | pub trait Trait {
//! | ----- this trait is not dyn compatible...
//! 2 | async fn f(&self);
//! | ^ ...because method `f` is `async`
//! = help: consider moving `f` to another trait
//! ```
//!
//! This crate provides an attribute macro to make async fn in traits work with
//! dyn traits.
//!
//! Please refer to [*why async fn in traits are hard*][hard] for a deeper
//! analysis of how this implementation differs from what the compiler and
//! language deliver natively.
//!
//! [hard]: https://smallcultfollowing.com/babysteps/blog/2019/10/26/async-fn-in-traits-are-hard/
//!
//! <br>
//!
//! # Example
//!
//! This example implements the core of a highly effective advertising platform
//! using async fn in a trait.
//!
//! The only thing to notice here is that we write an `#[async_trait]` macro on
//! top of traits and trait impls that contain async fn, and then they work. We
//! get to have `Vec<Box<dyn Advertisement + Sync>>` or `&[&dyn Advertisement]`,
//! for example.
//!
//! ```
//! use async_trait::async_trait;
//!
//! #[async_trait]
//! trait Advertisement {
//! async fn run(&self);
//! }
//!
//! struct Modal;
//!
//! #[async_trait]
//! impl Advertisement for Modal {
//! async fn run(&self) {
//! self.render_fullscreen().await;
//! for _ in 0..4u16 {
//! remind_user_to_join_mailing_list().await;
//! }
//! self.hide_for_now().await;
//! }
//! }
//!
//! struct AutoplayingVideo {
//! media_url: String,
//! }
//!
//! #[async_trait]
//! impl Advertisement for AutoplayingVideo {
//! async fn run(&self) {
//! let stream = connect(&self.media_url).await;
//! stream.play().await;
//!
//! // Video probably persuaded user to join our mailing list!
//! Modal.run().await;
//! }
//! }
//! #
//! # impl Modal {
//! # async fn render_fullscreen(&self) {}
//! # async fn hide_for_now(&self) {}
//! # }
//! #
//! # async fn remind_user_to_join_mailing_list() {}
//! #
//! # struct Stream;
//! # async fn connect(_media_url: &str) -> Stream { Stream }
//! # impl Stream {
//! # async fn play(&self) {}
//! # }
//! ```
//!
//! <br><br>
//!
//! # Supported features
//!
//! It is the intention that all features of Rust traits should work nicely with
//! #\[async_trait\], but the edge cases are numerous. Please file an issue if
//! you see unexpected borrow checker errors, type errors, or warnings. There is
//! no use of `unsafe` in the expanded code, so rest assured that if your code
//! compiles it can't be that badly broken.
//!
//! > &#9745;&emsp;Self by value, by reference, by mut reference, or no self;<br>
//! > &#9745;&emsp;Any number of arguments, any return value;<br>
//! > &#9745;&emsp;Generic type parameters and lifetime parameters;<br>
//! > &#9745;&emsp;Associated types;<br>
//! > &#9745;&emsp;Having async and non-async functions in the same trait;<br>
//! > &#9745;&emsp;Default implementations provided by the trait;<br>
//! > &#9745;&emsp;Elided lifetimes.<br>
//!
//! <br>
//!
//! # Explanation
//!
//! Async fns get transformed into methods that return `Pin<Box<dyn Future +
//! Send + 'async_trait>>` and delegate to an async block.
//!
//! For example the `impl Advertisement for AutoplayingVideo` above would be
//! expanded as:
//!
//! ```
//! # const IGNORE: &str = stringify! {
//! impl Advertisement for AutoplayingVideo {
//! fn run<'async_trait>(
//! &'async_trait self,
//! ) -> Pin<Box<dyn core::future::Future<Output = ()> + Send + 'async_trait>>
//! where
//! Self: Sync + 'async_trait,
//! {
//! Box::pin(async move {
//! /* the original method body */
//! })
//! }
//! }
//! # };
//! ```
//!
//! <br><br>
//!
//! # Non-threadsafe futures
//!
//! Not all async traits need futures that are `dyn Future + Send`. To avoid
//! having Send and Sync bounds placed on the async trait methods, invoke the
//! async trait macro as `#[async_trait(?Send)]` on both the trait and the impl
//! blocks.
//!
//! <br>
//!
//! # Elided lifetimes
//!
//! Be aware that async fn syntax does not allow lifetime elision outside of `&`
//! and `&mut` references. (This is true even when not using #\[async_trait\].)
//! Lifetimes must be named or marked by the placeholder `'_`.
//!
//! Fortunately the compiler is able to diagnose missing lifetimes with a good
//! error message.
//!
//! ```compile_fail
//! # use async_trait::async_trait;
//! #
//! type Elided<'a> = &'a usize;
//!
//! #[async_trait]
//! trait Test {
//! async fn test(not_okay: Elided, okay: &usize) {}
//! }
//! ```
//!
//! ```text
//! error[E0726]: implicit elided lifetime not allowed here
//! --> src/main.rs:9:29
//! |
//! 9 | async fn test(not_okay: Elided, okay: &usize) {}
//! | ^^^^^^- help: indicate the anonymous lifetime: `<'_>`
//! ```
//!
//! The fix is to name the lifetime or use `'_`.
//!
//! ```
//! # use async_trait::async_trait;
//! #
//! # type Elided<'a> = &'a usize;
//! #
//! #[async_trait]
//! trait Test {
//! // either
//! async fn test<'e>(elided: Elided<'e>) {}
//! # }
//! # #[async_trait]
//! # trait Test2 {
//! // or
//! async fn test(elided: Elided<'_>) {}
//! }
//! ```
#![doc(html_root_url = "https://docs.rs/async-trait/0.1.89")]
#![allow(
clippy::default_trait_access,
clippy::doc_markdown,
clippy::elidable_lifetime_names,
clippy::explicit_auto_deref,
clippy::if_not_else,
clippy::items_after_statements,
clippy::match_like_matches_macro,
clippy::module_name_repetitions,
clippy::needless_lifetimes,
clippy::shadow_unrelated,
clippy::similar_names,
clippy::too_many_lines,
clippy::trivially_copy_pass_by_ref
)]
extern crate proc_macro;
mod args;
mod bound;
mod expand;
mod lifetime;
mod parse;
mod receiver;
mod verbatim;
use crate::args::Args;
use crate::expand::expand;
use crate::parse::Item;
use proc_macro::TokenStream;
use quote::quote;
use syn::parse_macro_input;
#[proc_macro_attribute]
pub fn async_trait(args: TokenStream, input: TokenStream) -> TokenStream {
let args = parse_macro_input!(args as Args);
let mut item = parse_macro_input!(input as Item);
expand(&mut item, args.local);
TokenStream::from(quote!(#item))
}

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use proc_macro2::{Span, TokenStream};
use std::mem;
use syn::visit_mut::{self, VisitMut};
use syn::{
parse_quote_spanned, token, Expr, GenericArgument, Lifetime, Receiver, ReturnType, Token, Type,
TypeBareFn, TypeImplTrait, TypeParen, TypePtr, TypeReference,
};
pub struct CollectLifetimes {
pub elided: Vec<Lifetime>,
pub explicit: Vec<Lifetime>,
}
impl CollectLifetimes {
pub fn new() -> Self {
CollectLifetimes {
elided: Vec::new(),
explicit: Vec::new(),
}
}
fn visit_opt_lifetime(&mut self, reference: &Token![&], lifetime: &mut Option<Lifetime>) {
match lifetime {
None => *lifetime = Some(self.next_lifetime(reference.span)),
Some(lifetime) => self.visit_lifetime(lifetime),
}
}
fn visit_lifetime(&mut self, lifetime: &mut Lifetime) {
if lifetime.ident == "_" {
*lifetime = self.next_lifetime(lifetime.span());
} else {
self.explicit.push(lifetime.clone());
}
}
fn next_lifetime(&mut self, span: Span) -> Lifetime {
let name = format!("'life{}", self.elided.len());
let life = Lifetime::new(&name, span);
self.elided.push(life.clone());
life
}
}
impl VisitMut for CollectLifetimes {
fn visit_receiver_mut(&mut self, arg: &mut Receiver) {
if let Some((reference, lifetime)) = &mut arg.reference {
self.visit_opt_lifetime(reference, lifetime);
} else {
visit_mut::visit_type_mut(self, &mut arg.ty);
}
}
fn visit_type_reference_mut(&mut self, ty: &mut TypeReference) {
self.visit_opt_lifetime(&ty.and_token, &mut ty.lifetime);
visit_mut::visit_type_reference_mut(self, ty);
}
fn visit_generic_argument_mut(&mut self, gen: &mut GenericArgument) {
if let GenericArgument::Lifetime(lifetime) = gen {
self.visit_lifetime(lifetime);
}
visit_mut::visit_generic_argument_mut(self, gen);
}
}
pub struct AddLifetimeToImplTrait;
impl VisitMut for AddLifetimeToImplTrait {
fn visit_type_impl_trait_mut(&mut self, ty: &mut TypeImplTrait) {
let span = ty.impl_token.span;
let lifetime = parse_quote_spanned!(span=> 'async_trait);
ty.bounds.insert(0, lifetime);
if let Some(punct) = ty.bounds.pairs_mut().next().unwrap().punct_mut() {
punct.span = span;
}
visit_mut::visit_type_impl_trait_mut(self, ty);
}
fn visit_type_reference_mut(&mut self, ty: &mut TypeReference) {
parenthesize_impl_trait(&mut ty.elem, ty.and_token.span);
visit_mut::visit_type_reference_mut(self, ty);
}
fn visit_type_ptr_mut(&mut self, ty: &mut TypePtr) {
parenthesize_impl_trait(&mut ty.elem, ty.star_token.span);
visit_mut::visit_type_ptr_mut(self, ty);
}
fn visit_type_bare_fn_mut(&mut self, ty: &mut TypeBareFn) {
if let ReturnType::Type(arrow, return_type) = &mut ty.output {
parenthesize_impl_trait(return_type, arrow.spans[0]);
}
visit_mut::visit_type_bare_fn_mut(self, ty);
}
fn visit_expr_mut(&mut self, _e: &mut Expr) {
// Do not recurse into impl Traits inside of an array length expression.
//
// fn outer(arg: [u8; { fn inner(_: impl Trait) {}; 0 }]);
}
}
fn parenthesize_impl_trait(elem: &mut Type, paren_span: Span) {
if let Type::ImplTrait(_) = *elem {
let placeholder = Type::Verbatim(TokenStream::new());
*elem = Type::Paren(TypeParen {
paren_token: token::Paren(paren_span),
elem: Box::new(mem::replace(elem, placeholder)),
});
}
}

34
vendor/async-trait/src/parse.rs vendored Normal file
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@@ -0,0 +1,34 @@
use proc_macro2::Span;
use syn::parse::{Error, Parse, ParseStream, Result};
use syn::{Attribute, ItemImpl, ItemTrait, Token};
pub enum Item {
Trait(ItemTrait),
Impl(ItemImpl),
}
impl Parse for Item {
fn parse(input: ParseStream) -> Result<Self> {
let attrs = input.call(Attribute::parse_outer)?;
let mut lookahead = input.lookahead1();
if lookahead.peek(Token![unsafe]) {
let ahead = input.fork();
ahead.parse::<Token![unsafe]>()?;
lookahead = ahead.lookahead1();
}
if lookahead.peek(Token![pub]) || lookahead.peek(Token![trait]) {
let mut item: ItemTrait = input.parse()?;
item.attrs = attrs;
Ok(Item::Trait(item))
} else if lookahead.peek(Token![impl]) {
let mut item: ItemImpl = input.parse()?;
if item.trait_.is_none() {
return Err(Error::new(Span::call_site(), "expected a trait impl"));
}
item.attrs = attrs;
Ok(Item::Impl(item))
} else {
Err(lookahead.error())
}
}
}

169
vendor/async-trait/src/receiver.rs vendored Normal file
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@@ -0,0 +1,169 @@
use proc_macro2::{Group, TokenStream, TokenTree};
use syn::visit_mut::{self, VisitMut};
use syn::{
Block, ExprPath, Ident, Item, Macro, Pat, PatIdent, Path, Receiver, Signature, Token, TypePath,
};
pub fn has_self_in_sig(sig: &mut Signature) -> bool {
let mut visitor = HasSelf(false);
visitor.visit_signature_mut(sig);
visitor.0
}
pub fn has_self_in_block(block: &mut Block) -> bool {
let mut visitor = HasSelf(false);
visitor.visit_block_mut(block);
visitor.0
}
fn has_self_in_token_stream(tokens: TokenStream) -> bool {
tokens.into_iter().any(|tt| match tt {
TokenTree::Ident(ident) => ident == "Self",
TokenTree::Group(group) => has_self_in_token_stream(group.stream()),
_ => false,
})
}
pub fn mut_pat(pat: &mut Pat) -> Option<Token![mut]> {
let mut visitor = HasMutPat(None);
visitor.visit_pat_mut(pat);
visitor.0
}
fn contains_fn(tokens: TokenStream) -> bool {
tokens.into_iter().any(|tt| match tt {
TokenTree::Ident(ident) => ident == "fn",
TokenTree::Group(group) => contains_fn(group.stream()),
_ => false,
})
}
struct HasMutPat(Option<Token![mut]>);
impl VisitMut for HasMutPat {
fn visit_pat_ident_mut(&mut self, i: &mut PatIdent) {
if let Some(m) = &i.mutability {
self.0 = Some(Token![mut](m.span));
} else {
visit_mut::visit_pat_ident_mut(self, i);
}
}
}
struct HasSelf(bool);
impl VisitMut for HasSelf {
fn visit_expr_path_mut(&mut self, expr: &mut ExprPath) {
self.0 |= expr.path.segments[0].ident == "Self";
visit_mut::visit_expr_path_mut(self, expr);
}
fn visit_type_path_mut(&mut self, ty: &mut TypePath) {
self.0 |= ty.path.segments[0].ident == "Self";
visit_mut::visit_type_path_mut(self, ty);
}
fn visit_receiver_mut(&mut self, _arg: &mut Receiver) {
self.0 = true;
}
fn visit_item_mut(&mut self, _: &mut Item) {
// Do not recurse into nested items.
}
fn visit_macro_mut(&mut self, mac: &mut Macro) {
if !contains_fn(mac.tokens.clone()) {
self.0 |= has_self_in_token_stream(mac.tokens.clone());
}
}
}
pub struct ReplaceSelf;
fn prepend_underscore_to_self(ident: &mut Ident) -> bool {
let modified = ident == "self";
if modified {
*ident = Ident::new("__self", ident.span());
}
modified
}
impl ReplaceSelf {
fn visit_token_stream(&mut self, tokens: &mut TokenStream) -> bool {
let mut out = Vec::new();
let mut modified = false;
visit_token_stream_impl(self, tokens.clone(), &mut modified, &mut out);
if modified {
*tokens = TokenStream::from_iter(out);
}
return modified;
fn visit_token_stream_impl(
visitor: &mut ReplaceSelf,
tokens: TokenStream,
modified: &mut bool,
out: &mut Vec<TokenTree>,
) {
for tt in tokens {
match tt {
TokenTree::Ident(mut ident) => {
*modified |= prepend_underscore_to_self(&mut ident);
out.push(TokenTree::Ident(ident));
}
TokenTree::Group(group) => {
let mut content = group.stream();
*modified |= visitor.visit_token_stream(&mut content);
let mut new = Group::new(group.delimiter(), content);
new.set_span(group.span());
out.push(TokenTree::Group(new));
}
other => out.push(other),
}
}
}
}
}
impl VisitMut for ReplaceSelf {
fn visit_ident_mut(&mut self, i: &mut Ident) {
prepend_underscore_to_self(i);
}
fn visit_path_mut(&mut self, p: &mut Path) {
if p.segments.len() == 1 {
// Replace `self`, but not `self::function`.
self.visit_ident_mut(&mut p.segments[0].ident);
}
for segment in &mut p.segments {
self.visit_path_arguments_mut(&mut segment.arguments);
}
}
fn visit_item_mut(&mut self, i: &mut Item) {
// Visit `macro_rules!` because locally defined macros can refer to
// `self`.
//
// Visit `futures::select` and similar select macros, which commonly
// appear syntactically like an item despite expanding to an expression.
//
// Otherwise, do not recurse into nested items.
if let Item::Macro(i) = i {
if i.mac.path.is_ident("macro_rules")
|| i.mac.path.segments.last().unwrap().ident == "select"
{
self.visit_macro_mut(&mut i.mac);
}
}
}
fn visit_macro_mut(&mut self, mac: &mut Macro) {
// We can't tell in general whether `self` inside a macro invocation
// refers to the self in the argument list or a different self
// introduced within the macro. Heuristic: if the macro input contains
// `fn`, then `self` is more likely to refer to something other than the
// outer function's self argument.
if !contains_fn(mac.tokens.clone()) {
self.visit_token_stream(&mut mac.tokens);
}
}
}

34
vendor/async-trait/src/verbatim.rs vendored Normal file
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@@ -0,0 +1,34 @@
use proc_macro2::TokenStream;
use quote::{ToTokens, TokenStreamExt};
use syn::parse::{Parse, ParseStream, Result};
use syn::{Attribute, Signature, Token, Visibility};
pub struct VerbatimFn {
pub attrs: Vec<Attribute>,
pub vis: Visibility,
pub defaultness: Option<Token![default]>,
pub sig: Signature,
pub semi_token: Token![;],
}
impl Parse for VerbatimFn {
fn parse(input: ParseStream) -> Result<Self> {
Ok(VerbatimFn {
attrs: input.call(Attribute::parse_outer)?,
vis: input.parse()?,
defaultness: input.parse()?,
sig: input.parse()?,
semi_token: input.parse()?,
})
}
}
impl ToTokens for VerbatimFn {
fn to_tokens(&self, tokens: &mut TokenStream) {
tokens.append_all(&self.attrs);
self.vis.to_tokens(tokens);
self.defaultness.to_tokens(tokens);
self.sig.to_tokens(tokens);
self.semi_token.to_tokens(tokens);
}
}

7
vendor/async-trait/tests/compiletest.rs vendored Normal file
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@@ -0,0 +1,7 @@
#[rustversion::attr(not(nightly), ignore = "requires nightly")]
#[cfg_attr(miri, ignore = "incompatible with miri")]
#[test]
fn ui() {
let t = trybuild::TestCases::new();
t.compile_fail("tests/ui/*.rs");
}

36
vendor/async-trait/tests/executor/mod.rs vendored Normal file
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@@ -0,0 +1,36 @@
use std::future::Future;
use std::pin::Pin;
use std::ptr;
use std::task::{Context, Poll, RawWaker, RawWakerVTable, Waker};
// Executor for a future that resolves immediately (test only).
#[allow(clippy::missing_panics_doc)]
pub fn block_on_simple<F: Future>(mut fut: F) -> F::Output {
unsafe fn clone(_null: *const ()) -> RawWaker {
unimplemented!()
}
unsafe fn wake(_null: *const ()) {
unimplemented!()
}
unsafe fn wake_by_ref(_null: *const ()) {
unimplemented!()
}
unsafe fn drop(_null: *const ()) {}
let data = ptr::null();
let vtable = &RawWakerVTable::new(clone, wake, wake_by_ref, drop);
let raw_waker = RawWaker::new(data, vtable);
let waker = unsafe { Waker::from_raw(raw_waker) };
let mut cx = Context::from_waker(&waker);
// fut does not move until it gets dropped.
let fut = unsafe { Pin::new_unchecked(&mut fut) };
match fut.poll(&mut cx) {
Poll::Ready(output) => output,
Poll::Pending => panic!("future did not resolve immediately"),
}
}

1728
vendor/async-trait/tests/test.rs vendored Normal file
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File diff suppressed because it is too large Load Diff

22
vendor/async-trait/tests/ui/arg-implementation-detail.rs vendored Normal file
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@@ -0,0 +1,22 @@
use async_trait::async_trait;
pub struct Struct;
#[async_trait]
pub trait Trait {
async fn f((_a, _b): (Struct, Struct)) {
// Expands to something like:
//
// fn f(__arg0: (Struct, Struct)) -> … {
// Box::pin(async move {
// let (_a, _b) = __arg0;
// …
// })
// }
//
// but user's code must not be allowed to name that temporary argument:
let _ = __arg0;
}
}
fn main() {}

5
vendor/async-trait/tests/ui/arg-implementation-detail.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error[E0425]: cannot find value `__arg0` in this scope
--> tests/ui/arg-implementation-detail.rs:18:17
|
18 | let _ = __arg0;
| ^^^^^^ not found in this scope

15
vendor/async-trait/tests/ui/bare-trait-object.rs vendored Normal file
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@@ -0,0 +1,15 @@
#![deny(bare_trait_objects)]
use async_trait::async_trait;
#[async_trait]
trait Trait {
async fn f(&self);
}
#[async_trait]
impl Trait for Send + Sync {
async fn f(&self) {}
}
fn main() {}

15
vendor/async-trait/tests/ui/bare-trait-object.stderr vendored Normal file
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@@ -0,0 +1,15 @@
error[E0782]: expected a type, found a trait
--> tests/ui/bare-trait-object.rs:11:16
|
11 | impl Trait for Send + Sync {
| ^^^^^^^^^^^
|
help: you can add the `dyn` keyword if you want a trait object
|
11 | impl Trait for dyn Send + Sync {
| +++
help: alternatively use a blanket implementation to implement `Trait` for all types that also implement `Send + Sync`
|
11 - impl Trait for Send + Sync {
11 + impl<T: Send + Sync> Trait for T {
|

26
vendor/async-trait/tests/ui/consider-restricting.rs vendored Normal file
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@@ -0,0 +1,26 @@
// https://github.com/rust-lang/rust/issues/93828
use async_trait::async_trait;
pub trait IntoUrl {}
#[async_trait]
pub trait ClientExt {
async fn publish<T: IntoUrl>(&self, url: T);
}
struct Client;
#[async_trait]
impl ClientExt for Client {
async fn publish<T: IntoUrl>(&self, _url: T) {}
}
struct Client2;
#[async_trait]
impl ClientExt for Client2 {
async fn publish<T>(&self, _url: T) {}
}
fn main() {}

33
vendor/async-trait/tests/ui/consider-restricting.stderr vendored Normal file
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@@ -0,0 +1,33 @@
error: future cannot be sent between threads safely
--> tests/ui/consider-restricting.rs:16:5
|
16 | async fn publish<T: IntoUrl>(&self, _url: T) {}
| ^^^^^ future created by async block is not `Send`
|
note: captured value is not `Send`
--> tests/ui/consider-restricting.rs:16:41
|
16 | async fn publish<T: IntoUrl>(&self, _url: T) {}
| ^^^^ has type `T` which is not `Send`
= note: required for the cast from `Pin<Box<{async block@$DIR/tests/ui/consider-restricting.rs:16:5: 16:10}>>` to `Pin<Box<dyn Future<Output = ()> + Send>>`
help: consider further restricting type parameter `T` with trait `Send`
|
16 | async fn publish<T: IntoUrl + std::marker::Send>(&self, _url: T) {}
| +++++++++++++++++++
error: future cannot be sent between threads safely
--> tests/ui/consider-restricting.rs:23:5
|
23 | async fn publish<T>(&self, _url: T) {}
| ^^^^^ future created by async block is not `Send`
|
note: captured value is not `Send`
--> tests/ui/consider-restricting.rs:23:32
|
23 | async fn publish<T>(&self, _url: T) {}
| ^^^^ has type `T` which is not `Send`
= note: required for the cast from `Pin<Box<{async block@$DIR/tests/ui/consider-restricting.rs:23:5: 23:10}>>` to `Pin<Box<dyn Future<Output = ()> + Send>>`
help: consider further restricting type parameter `T` with trait `Send`
|
23 | async fn publish<T + std::marker::Send>(&self, _url: T) {}
| +++++++++++++++++++

24
vendor/async-trait/tests/ui/delimiter-span.rs vendored Normal file
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@@ -0,0 +1,24 @@
#![allow(unused_macro_rules)]
use async_trait::async_trait;
macro_rules! picky {
($(t:tt)*) => {};
}
#[async_trait]
trait Trait {
async fn method();
}
struct Struct;
#[async_trait]
impl Trait for Struct {
async fn method() {
picky!({ 123, self });
picky!({ 123 });
}
}
fn main() {}

21
vendor/async-trait/tests/ui/delimiter-span.stderr vendored Normal file
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@@ -0,0 +1,21 @@
error: no rules expected `{`
--> tests/ui/delimiter-span.rs:19:16
|
5 | macro_rules! picky {
| ------------------ when calling this macro
...
19 | picky!({ 123, self });
| ^ no rules expected this token in macro call
|
= note: while trying to match sequence start
error: no rules expected `{`
--> tests/ui/delimiter-span.rs:20:16
|
5 | macro_rules! picky {
| ------------------ when calling this macro
...
20 | picky!({ 123 });
| ^ no rules expected this token in macro call
|
= note: while trying to match sequence start

23
vendor/async-trait/tests/ui/lifetime-defined-here.rs vendored Normal file
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@@ -0,0 +1,23 @@
use async_trait::async_trait;
#[async_trait]
trait Foo {
async fn bar(&self, x: &str, y: &'_ str) -> &'static str;
}
struct S(String);
#[async_trait]
impl Foo for S {
async fn bar(&self, x: &str, y: &'_ str) -> &'static str {
if false {
&self.0
} else if false {
x
} else {
y
}
}
}
fn main() {}

29
vendor/async-trait/tests/ui/lifetime-defined-here.stderr vendored Normal file
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@@ -0,0 +1,29 @@
error: lifetime may not live long enough
--> tests/ui/lifetime-defined-here.rs:12:49
|
12 | async fn bar(&self, x: &str, y: &'_ str) -> &'static str {
| - ^^^^^^^^^^^^ type annotation requires that `'life0` must outlive `'static`
| |
| lifetime `'life0` defined here
error: lifetime may not live long enough
--> tests/ui/lifetime-defined-here.rs:12:49
|
12 | async fn bar(&self, x: &str, y: &'_ str) -> &'static str {
| - ^^^^^^^^^^^^ type annotation requires that `'life1` must outlive `'static`
| |
| lifetime `'life1` defined here
error: lifetime may not live long enough
--> tests/ui/lifetime-defined-here.rs:12:49
|
12 | async fn bar(&self, x: &str, y: &'_ str) -> &'static str {
| -- ^^^^^^^^^^^^ type annotation requires that `'life2` must outlive `'static`
| |
| lifetime `'life2` defined here
help: the following changes may resolve your lifetime errors
|
= help: replace `'life0` with `'static`
= help: replace `'life1` with `'static`
= help: replace `'life2` with `'static`

36
vendor/async-trait/tests/ui/lifetime-span.rs vendored Normal file
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@@ -0,0 +1,36 @@
use async_trait::async_trait;
struct A;
struct B;
#[async_trait]
pub trait Trait<'r> {
async fn method(&'r self);
}
#[async_trait]
impl Trait for A {
async fn method(&self) {}
}
#[async_trait]
impl<'r> Trait<'r> for B {
async fn method(&self) {}
}
#[async_trait]
pub trait Trait2 {
async fn method<'r>(&'r self);
}
#[async_trait]
impl Trait2 for A {
async fn method(&self) {}
}
#[async_trait]
impl<'r> Trait2<'r> for B {
async fn method(&'r self) {}
}
fn main() {}

33
vendor/async-trait/tests/ui/lifetime-span.stderr vendored Normal file
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@@ -0,0 +1,33 @@
error[E0726]: implicit elided lifetime not allowed here
--> tests/ui/lifetime-span.rs:12:6
|
12 | impl Trait for A {
| ^^^^^ expected lifetime parameter
|
help: indicate the anonymous lifetime
|
12 | impl Trait<'_> for A {
| ++++
error[E0107]: trait takes 0 lifetime arguments but 1 lifetime argument was supplied
--> tests/ui/lifetime-span.rs:32:10
|
32 | impl<'r> Trait2<'r> for B {
| ^^^^^^---- help: remove the unnecessary generics
| |
| expected 0 lifetime arguments
|
note: trait defined here, with 0 lifetime parameters
--> tests/ui/lifetime-span.rs:22:11
|
22 | pub trait Trait2 {
| ^^^^^^
error[E0195]: lifetime parameters or bounds on method `method` do not match the trait declaration
--> tests/ui/lifetime-span.rs:33:14
|
23 | async fn method<'r>(&'r self);
| ---- lifetimes in impl do not match this method in trait
...
33 | async fn method(&'r self) {}
| ^^^^^^^^^^^^^^^^ lifetimes do not match method in trait

15
vendor/async-trait/tests/ui/missing-async-in-impl.rs vendored Normal file
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@@ -0,0 +1,15 @@
use async_trait::async_trait;
#[async_trait]
pub trait Trait {
async fn method();
}
pub struct Struct;
#[async_trait]
impl Trait for Struct {
fn method() {}
}
fn main() {}

8
vendor/async-trait/tests/ui/missing-async-in-impl.stderr vendored Normal file
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@@ -0,0 +1,8 @@
error[E0195]: lifetime parameters or bounds on associated function `method` do not match the trait declaration
--> tests/ui/missing-async-in-impl.rs:12:14
|
5 | async fn method();
| -------- lifetimes in impl do not match this associated function in trait
...
12 | fn method() {}
| ^ lifetimes do not match associated function in trait

15
vendor/async-trait/tests/ui/missing-async-in-trait.rs vendored Normal file
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@@ -0,0 +1,15 @@
use async_trait::async_trait;
#[async_trait]
pub trait Trait {
fn method();
}
pub struct Struct;
#[async_trait]
impl Trait for Struct {
async fn method() {}
}
fn main() {}

8
vendor/async-trait/tests/ui/missing-async-in-trait.stderr vendored Normal file
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@@ -0,0 +1,8 @@
error[E0195]: lifetime parameters or bounds on associated function `method` do not match the trait declaration
--> tests/ui/missing-async-in-trait.rs:12:14
|
5 | fn method();
| - lifetimes in impl do not match this associated function in trait
...
12 | async fn method() {}
| ^^^^^^^^ lifetimes do not match associated function in trait

15
vendor/async-trait/tests/ui/missing-body.rs vendored Normal file
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@@ -0,0 +1,15 @@
use async_trait::async_trait;
#[async_trait]
trait Trait {
async fn f(&self);
}
struct Thing;
#[async_trait]
impl Trait for Thing {
async fn f(&self);
}
fn main() {}

7
vendor/async-trait/tests/ui/missing-body.stderr vendored Normal file
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@@ -0,0 +1,7 @@
error: associated function in `impl` without body
--> tests/ui/missing-body.rs:12:5
|
12 | async fn f(&self);
| ^^^^^^^^^^^^^^^^^-
| |
| help: provide a definition for the function: `{ <body> }`

21
vendor/async-trait/tests/ui/must-use.rs vendored Normal file
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@@ -0,0 +1,21 @@
#![deny(unused_must_use)]
use async_trait::async_trait;
#[async_trait]
trait Interface {
async fn f(&self);
}
struct Thing;
#[async_trait]
impl Interface for Thing {
async fn f(&self) {}
}
pub async fn f() {
Thing.f();
}
fn main() {}

23
vendor/async-trait/tests/ui/must-use.stderr vendored Normal file
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@@ -0,0 +1,23 @@
error: unused pinned boxed `Future` trait object that must be used
--> tests/ui/must-use.rs:18:5
|
18 | Thing.f();
| ^^^^^^^^^
|
= note: futures do nothing unless you `.await` or poll them
note: the lint level is defined here
--> tests/ui/must-use.rs:1:9
|
1 | #![deny(unused_must_use)]
| ^^^^^^^^^^^^^^^
error: unused return value of `Interface::f` that must be used
--> tests/ui/must-use.rs:18:5
|
18 | Thing.f();
| ^^^^^^^^^
|
help: use `let _ = ...` to ignore the resulting value
|
18 | let _ = Thing.f();
| +++++++

13
vendor/async-trait/tests/ui/no-attribute-macro.rs vendored Normal file
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@@ -0,0 +1,13 @@
pub trait Trait {
async fn method(&self);
}
pub struct Struct;
impl Trait for Struct {
async fn method(&self) {}
}
fn main() {
let _: &dyn Trait;
}

17
vendor/async-trait/tests/ui/no-attribute-macro.stderr vendored Normal file
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@@ -0,0 +1,17 @@
error[E0038]: the trait `Trait` is not dyn compatible
--> tests/ui/no-attribute-macro.rs:12:17
|
12 | let _: &dyn Trait;
| ^^^^^ `Trait` is not dyn compatible
|
note: for a trait to be dyn compatible it needs to allow building a vtable
for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
--> tests/ui/no-attribute-macro.rs:2:14
|
1 | pub trait Trait {
| ----- this trait is not dyn compatible...
2 | async fn method(&self);
| ^^^^^^ ...because method `method` is `async`
= help: consider moving `method` to another trait
= help: only type `Struct` implements `Trait` within this crate; consider using it directly instead.
= note: `Trait` may be implemented in other crates; if you want to support your users passing their own types here, you can't refer to a specific type

30
vendor/async-trait/tests/ui/self-span.rs vendored Normal file
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@@ -0,0 +1,30 @@
use async_trait::async_trait;
pub struct S {}
pub enum E {
V {},
}
#[async_trait]
pub trait Trait {
async fn method(self);
}
#[async_trait]
impl Trait for S {
async fn method(self) {
let _: () = self;
let _: Self = Self;
}
}
#[async_trait]
impl Trait for E {
async fn method(self) {
let _: () = self;
let _: Self = Self::V;
}
}
fn main() {}

32
vendor/async-trait/tests/ui/self-span.stderr vendored Normal file
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@@ -0,0 +1,32 @@
error[E0308]: mismatched types
--> tests/ui/self-span.rs:17:21
|
17 | let _: () = self;
| -- ^^^^ expected `()`, found `S`
| |
| expected due to this
error: the `Self` constructor can only be used with tuple or unit structs
--> tests/ui/self-span.rs:18:23
|
18 | let _: Self = Self;
| ^^^^ help: use curly brackets: `Self { /* fields */ }`
error[E0308]: mismatched types
--> tests/ui/self-span.rs:25:21
|
25 | let _: () = self;
| -- ^^^^ expected `()`, found `E`
| |
| expected due to this
error[E0533]: expected value, found struct variant `Self::V`
--> tests/ui/self-span.rs:26:23
|
26 | let _: Self = Self::V;
| ^^^^^^^ not a value
|
help: you might have meant to create a new value of the struct
|
26 | let _: Self = Self::V {};
| ++

22
vendor/async-trait/tests/ui/send-not-implemented.rs vendored Normal file
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@@ -0,0 +1,22 @@
use async_trait::async_trait;
use std::sync::Mutex;
async fn f() {}
#[async_trait]
trait Test {
async fn test(&self) {
let mutex = Mutex::new(());
let _guard = mutex.lock().unwrap();
f().await;
}
async fn test_ret(&self) -> bool {
let mutex = Mutex::new(());
let _guard = mutex.lock().unwrap();
f().await;
true
}
}
fn main() {}

31
vendor/async-trait/tests/ui/send-not-implemented.stderr vendored Normal file
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@@ -0,0 +1,31 @@
error: future cannot be sent between threads safely
--> tests/ui/send-not-implemented.rs:8:5
|
8 | async fn test(&self) {
| ^^^^^ future created by async block is not `Send`
|
= help: within `{async block@$DIR/tests/ui/send-not-implemented.rs:8:5: 8:10}`, the trait `Send` is not implemented for `std::sync::MutexGuard<'_, ()>`
note: future is not `Send` as this value is used across an await
--> tests/ui/send-not-implemented.rs:11:13
|
10 | let _guard = mutex.lock().unwrap();
| ------ has type `std::sync::MutexGuard<'_, ()>` which is not `Send`
11 | f().await;
| ^^^^^ await occurs here, with `_guard` maybe used later
= note: required for the cast from `Pin<Box<{async block@$DIR/tests/ui/send-not-implemented.rs:8:5: 8:10}>>` to `Pin<Box<dyn Future<Output = ()> + Send>>`
error: future cannot be sent between threads safely
--> tests/ui/send-not-implemented.rs:14:5
|
14 | async fn test_ret(&self) -> bool {
| ^^^^^ future created by async block is not `Send`
|
= help: within `{async block@$DIR/tests/ui/send-not-implemented.rs:14:5: 14:10}`, the trait `Send` is not implemented for `std::sync::MutexGuard<'_, ()>`
note: future is not `Send` as this value is used across an await
--> tests/ui/send-not-implemented.rs:17:13
|
16 | let _guard = mutex.lock().unwrap();
| ------ has type `std::sync::MutexGuard<'_, ()>` which is not `Send`
17 | f().await;
| ^^^^^ await occurs here, with `_guard` maybe used later
= note: required for the cast from `Pin<Box<{async block@$DIR/tests/ui/send-not-implemented.rs:14:5: 14:10}>>` to `Pin<Box<dyn Future<Output = bool> + Send>>`

21
vendor/async-trait/tests/ui/type-mismatch.rs vendored Normal file
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@@ -0,0 +1,21 @@
use async_trait::async_trait;
#[async_trait]
trait Interface {
async fn f(&self);
async fn g(&self) -> ();
}
struct Thing;
#[async_trait]
impl Interface for Thing {
async fn f(&self) {
0
}
async fn g(&self) {
0
}
}
fn main() {}

11
vendor/async-trait/tests/ui/type-mismatch.stderr vendored Normal file
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@@ -0,0 +1,11 @@
error[E0308]: mismatched types
--> tests/ui/type-mismatch.rs:14:9
|
14 | 0
| ^ expected `()`, found integer
error[E0308]: mismatched types
--> tests/ui/type-mismatch.rs:17:9
|
17 | 0
| ^ expected `()`, found integer

20
vendor/async-trait/tests/ui/unreachable.rs vendored Normal file
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@@ -0,0 +1,20 @@
#![deny(warnings)]
use async_trait::async_trait;
#[async_trait]
pub trait Trait {
async fn f() {
unimplemented!()
}
}
#[async_trait]
pub trait TraitFoo {
async fn f() {
let _y = unimplemented!();
let _z = _y;
}
}
fn main() {}

14
vendor/async-trait/tests/ui/unreachable.stderr vendored Normal file
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@@ -0,0 +1,14 @@
error: unreachable statement
--> tests/ui/unreachable.rs:16:9
|
15 | let _y = unimplemented!();
| ---------------- any code following this expression is unreachable
16 | let _z = _y;
| ^^^^^^^^^^^^ unreachable statement
|
note: the lint level is defined here
--> tests/ui/unreachable.rs:1:9
|
1 | #![deny(warnings)]
| ^^^^^^^^
= note: `#[deny(unreachable_code)]` implied by `#[deny(warnings)]`

15
vendor/async-trait/tests/ui/unsupported-self.rs vendored Normal file
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@@ -0,0 +1,15 @@
use async_trait::async_trait;
#[async_trait]
pub trait Trait {
async fn method();
}
#[async_trait]
impl Trait for &'static str {
async fn method() {
let _ = Self;
}
}
fn main() {}

5
vendor/async-trait/tests/ui/unsupported-self.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: the `Self` constructor can only be used with tuple or unit structs
--> tests/ui/unsupported-self.rs:11:17
|
11 | let _ = Self;
| ^^^^