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Bug 1716518 - Upgrade pin-project and pin-project-internal to v0.4.28. r=emilio

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Differential Revision: https://phabricator.services.mozilla.com/D117830
This commit is contained in:
Mike Hommey 2021-06-15 22:17:25 +00:00
parent 509f00541c
commit d63b139fc1
151 changed files with 7504 additions and 3072 deletions
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8
Cargo.lock generated
View File

@ -3810,18 +3810,18 @@ dependencies = [
[[package]]
name = "pin-project"
version = "0.4.9"
version = "0.4.28"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6f6a7f5eee6292c559c793430c55c00aea9d3b3d1905e855806ca4d7253426a2"
checksum = "918192b5c59119d51e0cd221f4d49dde9112824ba717369e903c97d076083d0f"
dependencies = [
"pin-project-internal",
]
[[package]]
name = "pin-project-internal"
version = "0.4.9"
version = "0.4.28"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8988430ce790d8682672117bc06dda364c0be32d3abd738234f19f3240bad99a"
checksum = "3be26700300be6d9d23264c73211d8190e755b6b5ca7a1b28230025511b52a5e"
dependencies = [
"proc-macro2",
"quote",

2
third_party/rust/pin-project-internal/.cargo-checksum.json vendored
View File

@ -1 +1 @@
{"files":{"Cargo.toml":"3fe6c53bc8cb8dfee1091ff799a743024b78bbf7ded986396ccb8a139bc7f02b","LICENSE-APACHE":"cfc7749b96f63bd31c3c42b5c471bf756814053e847c10f3eb003417bc523d30","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","src/lib.rs":"fe9fdaa1dcf2e9ade6ae1c34e20195223c8f63d19c0ba2d0189e07207d4f1a30","src/pin_project/attribute.rs":"5b441bab16d19215d660790b46eab18b402d36edb951ba7f8284772bf2a470bd","src/pin_project/derive.rs":"f244d4bed929350fdfcc96513fce17a4ab2146e1f7974ae1255d72a9b72ffd33","src/pin_project/mod.rs":"4c5f5215d1737a6e4797d7f5eb1f7f6008505b06cfc304a66758bd96e6252c0c","src/pinned_drop.rs":"4519a66e9804143578faf60ed8239811d92cc6b2af817736439a9bc772d48780","src/project.rs":"e6ce9acaaad85d9945c24ec4507e6373aa61dfab50717453666733fa8161c099","src/utils.rs":"340a79dd4b02b5ea97c747ef5c56d5a8cedfaeff4a259fe5140c83803b2ed115"},"package":"8988430ce790d8682672117bc06dda364c0be32d3abd738234f19f3240bad99a"}
{"files":{"Cargo.toml":"6691c704de55962c48e8e34a109ae4948427fdb453836f7bdd62ac9c9fb50992","LICENSE-APACHE":"cfc7749b96f63bd31c3c42b5c471bf756814053e847c10f3eb003417bc523d30","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","build.rs":"ff90cd6a515a5eab716f63f3af90db47c411ac3a1629800731fb73de832495aa","src/lib.rs":"57267f77a182d4baf651b3495eb89cb326bebb17c2f2f69a5e351bf1529d775b","src/pin_project/attribute.rs":"6601b126a642b25a4c0a5fbb2bbeb2bdc59ecb28eb678ef40595fc28001e5433","src/pin_project/derive.rs":"f97503dcdd13c15f27bfc24a557701fc9790218041ada1491cfc96b8dce67762","src/pin_project/mod.rs":"149bda261825c80b1043ce1a26f944f69d939d86e5fc37fd1f71969469202b2f","src/pinned_drop.rs":"1feb86175c035c2cbe5e5a0a43d18d2502d764d930644c5456d0ae249b4bbc2c","src/project.rs":"c1fe5164374317ada25ce0a26945c2fd2484d611de60b8ce05adc15013d768b2","src/utils.rs":"120e4c49164a1cbaf5e9f6632f29d88ab9821acb34355758c6b1566233a2fccc"},"package":"3be26700300be6d9d23264c73211d8190e755b6b5ca7a1b28230025511b52a5e"}

15
third_party/rust/pin-project-internal/Cargo.toml vendored
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@ -13,24 +13,27 @@
[package]
edition = "2018"
name = "pin-project-internal"
version = "0.4.9"
version = "0.4.28"
authors = ["Taiki Endo <te316e89@gmail.com>"]
description = "An internal crate to support pin_project - do not use directly\n"
homepage = "https://github.com/taiki-e/pin-project"
description = "Implementation detail of the `pin-project` crate.\n"
documentation = "https://docs.rs/pin-project-internal"
keywords = ["pin", "macros", "attribute"]
categories = ["no-std", "rust-patterns"]
license = "Apache-2.0 OR MIT"
repository = "https://github.com/taiki-e/pin-project"
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
[lib]
proc-macro = true
[dependencies.proc-macro2]
version = "1.0"
version = "1"
[dependencies.quote]
version = "1.0"
version = "1"
[dependencies.syn]
version = "1.0"
version = "1.0.44"
features = ["full", "visit-mut"]
[dev-dependencies.rustversion]
version = "1"

34
third_party/rust/pin-project-internal/build.rs vendored Normal file
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@ -0,0 +1,34 @@
use std::{env, process::Command, str};
// The rustc-cfg strings below are *not* public API. Please let us know by
// opening a GitHub issue if your build environment requires some way to enable
// these cfgs other than by executing our build script.
fn main() {
let minor = match rustc_minor_version() {
Some(minor) => minor,
None => return,
};
// Underscore const names requires Rust 1.37:
// https://github.com/rust-lang/rust/pull/61347
if minor >= 37 {
println!("cargo:rustc-cfg=underscore_consts");
}
// #[deprecated] on proc-macro requires Rust 1.40:
// https://github.com/rust-lang/rust/pull/65666
if minor >= 40 {
println!("cargo:rustc-cfg=deprecated_proc_macro");
}
}
fn rustc_minor_version() -> Option<u32> {
let rustc = env::var_os("RUSTC")?;
let output = Command::new(rustc).arg("--version").output().ok()?;
let version = str::from_utf8(&output.stdout).ok()?;
let mut pieces = version.split('.');
if pieces.next() != Some("rustc 1") {
return None;
}
pieces.next()?.parse().ok()
}

847
third_party/rust/pin-project-internal/src/lib.rs vendored
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File diff suppressed because it is too large Load Diff

45
third_party/rust/pin-project-internal/src/pin_project/attribute.rs vendored
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@ -1,42 +1,37 @@
use proc_macro2::{Span, TokenStream};
use proc_macro2::TokenStream;
use quote::quote;
use syn::{
parse::{Parse, ParseStream},
*,
};
use crate::utils::{SliceExt, CURRENT_PRIVATE_MODULE};
use super::PIN;
use crate::utils::SliceExt;
// To generate the correct `Unpin` implementation and the projection methods,
// we need to collect the types of the pinned fields.
// However, since proc-macro-attribute is applied before `#[cfg]` and `#[cfg_attr]` on fields,
// we cannot be collecting field types properly at this timing.
// So instead of generating the `Unpin` implementation and the projection methods here,
// delegate their processing to proc-macro-derive.
// However, since proc-macro-attribute is applied before `cfg` and `cfg_attr`
// on fields, we cannot be collecting field types properly at this timing.
// So instead of generating the `Unpin` implementation and the projection
// methods here, delegate their processing to proc-macro-derive.
//
// At this stage, only attributes are parsed and the following attributes are
// added to the attributes of the item.
// * `#[derive(InternalDerive)]` - An internal helper macro that does the above processing.
// * `#[pin(#private(#args))]` - Pass the argument of `#[pin_project]` to proc-macro-derive (`InternalDerive`).
// * `#[derive(InternalDerive)]` - An internal helper macro that does the above
// processing.
// * `#[pin(__private(#args))]` - Pass the argument of `#[pin_project]` to
// proc-macro-derive (`InternalDerive`).
pub(super) fn parse_attribute(args: &TokenStream, input: TokenStream) -> Result<TokenStream> {
let Input { mut attrs, body } = syn::parse2(input)?;
let private = Ident::new(CURRENT_PRIVATE_MODULE, Span::call_site());
attrs.push(syn::parse_quote! {
#[derive(::pin_project::#private::__PinProjectInternalDerive)]
});
// Use `#private` to prevent users from trying to control `InternalDerive` manually.
// `#private` does not guarantee compatibility between patch versions,
// so it should be sufficient for this purpose in most cases.
attrs.push(syn::parse_quote! {
#[pin(#private(#args))]
});
let Input { attrs, body } = syn::parse2(input)?;
Ok(quote! {
#(#attrs)*
#[derive(::pin_project::__private::__PinProjectInternalDerive)]
// Use `__private` to prevent users from trying to control `InternalDerive`
// manually. `__private` does not guarantee compatibility between patch
// versions, so it should be sufficient for this purpose in most cases.
#[pin(__private(#args))]
#body
})
}
@ -52,10 +47,10 @@ impl Parse for Input {
let attrs = input.call(Attribute::parse_outer)?;
let ahead = input.fork();
let _vis: Visibility = ahead.parse()?;
let _: Visibility = ahead.parse()?;
if !ahead.peek(Token![struct]) && !ahead.peek(Token![enum]) {
// If we check this only on proc-macro-derive, it may generate unhelpful error messages.
// So it is preferable to be able to detect it here.
// If we check this only on proc-macro-derive, it may generate unhelpful error
// messages. So it is preferable to be able to detect it here.
Err(error!(
input.parse::<TokenStream>()?,
"#[pin_project] attribute may only be used on structs or enums"
@ -63,7 +58,7 @@ impl Parse for Input {
} else if let Some(attr) = attrs.find(PIN) {
Err(error!(attr, "#[pin] attribute may only be used on fields of structs or variants"))
} else if let Some(attr) = attrs.find("pin_project") {
Err(error!(attr, "only one #[pin_project] attribute is allowed"))
Err(error!(attr, "duplicate #[pin_project] attribute"))
} else {
Ok(Self { attrs, body: input.parse()? })
}

1385
third_party/rust/pin-project-internal/src/pin_project/derive.rs vendored
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File diff suppressed because it is too large Load Diff

4
third_party/rust/pin-project-internal/src/pin_project/mod.rs vendored
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@ -1,8 +1,8 @@
use proc_macro2::TokenStream;
mod attribute;
mod derive;
use proc_macro2::TokenStream;
/// The annotation for pinned type.
const PIN: &str = "pin";

200
third_party/rust/pin-project-internal/src/pinned_drop.rs vendored
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@ -1,31 +1,34 @@
use proc_macro2::{Span, TokenStream};
use quote::{quote, quote_spanned, ToTokens};
use proc_macro2::TokenStream;
use quote::{quote, ToTokens};
use syn::{spanned::Spanned, visit_mut::VisitMut, *};
use crate::utils::{
parse_as_empty, prepend_underscore_to_self, ReplaceReceiver, CURRENT_PRIVATE_MODULE,
};
use crate::utils::{parse_as_empty, prepend_underscore_to_self, ReplaceReceiver, SliceExt};
pub(crate) fn attribute(args: &TokenStream, mut input: ItemImpl) -> TokenStream {
if let Err(e) = parse_as_empty(args).and_then(|()| parse(&mut input)) {
let self_ty = &input.self_ty;
let (impl_generics, _, where_clause) = input.generics.split_for_impl();
let mut tokens = e.to_compile_error();
let private = Ident::new(CURRENT_PRIVATE_MODULE, Span::call_site());
// Generate a dummy `PinnedDrop` implementation.
// In many cases, `#[pinned_drop] impl` is declared after `#[pin_project]`.
// Therefore, if `pinned_drop` compile fails, you will also get an error
// about `PinnedDrop` not being implemented.
// This can be prevented to some extent by generating a dummy
// `PinnedDrop` implementation.
// We already know that we will get a compile error, so this won't
// accidentally compile successfully.
tokens.extend(quote! {
impl #impl_generics ::pin_project::#private::PinnedDrop for #self_ty #where_clause {
unsafe fn drop(self: ::core::pin::Pin<&mut Self>) {}
}
});
if let Type::Path(self_ty) = &*input.self_ty {
let (impl_generics, _, where_clause) = input.generics.split_for_impl();
// A dummy impl of `PinnedDrop`.
// In many cases, `#[pinned_drop] impl` is declared after `#[pin_project]`.
// Therefore, if `pinned_drop` compile fails, you will also get an error
// about `PinnedDrop` not being implemented.
// This can be prevented to some extent by generating a dummy
// `PinnedDrop` implementation.
// We already know that we will get a compile error, so this won't
// accidentally compile successfully.
//
// However, if `input.self_ty` is not Type::Path, there is a high possibility that
// the type does not exist, so do not generate a dummy impl.
tokens.extend(quote! {
impl #impl_generics ::pin_project::__private::PinnedDrop for #self_ty
#where_clause
{
unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
});
}
tokens
} else {
input.into_token_stream()
@ -48,44 +51,41 @@ fn parse_method(method: &ImplItemMethod) -> Result<()> {
if let ReturnType::Type(_, ty) = &method.sig.output {
match &**ty {
Type::Tuple(TypeTuple { elems, .. }) if elems.is_empty() => {}
Type::Tuple(ty) if ty.elems.is_empty() => {}
_ => return Err(error!(ty, "method `drop` must return the unit type")),
}
}
if method.sig.inputs.len() != 1 {
if method.sig.inputs.is_empty() {
return Err(syn::Error::new(method.sig.paren_token.span, INVALID_ARGUMENT));
} else {
return Err(error!(&method.sig.inputs, INVALID_ARGUMENT));
}
match method.sig.inputs.len() {
1 => {}
0 => return Err(Error::new(method.sig.paren_token.span, INVALID_ARGUMENT)),
_ => return Err(error!(method.sig.inputs, INVALID_ARGUMENT)),
}
if let FnArg::Typed(PatType { pat, ty, .. }) = &method.sig.inputs[0] {
// !by_ref (mutability) ident !subpat: path
if let (Pat::Ident(PatIdent { by_ref: None, ident, subpat: None, .. }), Some(path)) =
(&**pat, get_ty_path(ty))
{
let ty = &path.segments.last().unwrap();
if let Some(FnArg::Typed(pat)) = method.sig.receiver() {
// (mut) self: <path>
if let Some(path) = get_ty_path(&pat.ty) {
let ty = path.segments.last().unwrap();
if let PathArguments::AngleBracketed(args) = &ty.arguments {
// (mut) self: (path::)Pin<args>
if ident == "self" && args.args.len() == 1 && ty.ident == "Pin" {
// &mut <elem>
if let GenericArgument::Type(Type::Reference(TypeReference {
mutability: Some(_),
elem,
..
})) = &args.args[0]
// (mut) self: (<path>::)<ty><&mut <elem>..>
if let Some(GenericArgument::Type(Type::Reference(TypeReference {
mutability: Some(_),
elem,
..
}))) = args.args.first()
{
// (mut) self: (<path>::)Pin<&mut Self>
if args.args.len() == 1
&& ty.ident == "Pin"
&& get_ty_path(elem).map_or(false, |path| path.is_ident("Self"))
{
if get_ty_path(elem).map_or(false, |path| path.is_ident("Self")) {
if method.sig.unsafety.is_some() {
return Err(error!(
method.sig.unsafety,
"implementing the method `drop` is not unsafe"
));
}
return Ok(());
if method.sig.unsafety.is_some() {
return Err(error!(
method.sig.unsafety,
"implementing the method `drop` is not unsafe"
));
}
return Ok(());
}
}
}
@ -96,24 +96,23 @@ fn parse_method(method: &ImplItemMethod) -> Result<()> {
}
fn parse(item: &mut ItemImpl) -> Result<()> {
const INVALID_ITEM: &str =
"#[pinned_drop] may only be used on implementation for the `PinnedDrop` trait";
if let Some(attr) = item.attrs.find("pinned_drop") {
return Err(error!(attr, "duplicate #[pinned_drop] attribute"));
}
if let Some((_, path, _)) = &mut item.trait_ {
if path.is_ident("PinnedDrop") {
let private = Ident::new(CURRENT_PRIVATE_MODULE, Span::call_site());
*path = syn::parse2(quote_spanned! { path.span() =>
::pin_project::#private::PinnedDrop
})
.unwrap();
*path = parse_quote_spanned! { path.span() =>
::pin_project::__private::PinnedDrop
};
} else {
return Err(error!(
path,
"#[pinned_drop] may only be used on implementation for the `PinnedDrop` trait"
));
return Err(error!(path, INVALID_ITEM));
}
} else {
return Err(error!(
item.self_ty,
"#[pinned_drop] may only be used on implementation for the `PinnedDrop` trait"
));
return Err(error!(item.self_ty, INVALID_ITEM));
}
if item.unsafety.is_some() {
@ -123,33 +122,37 @@ fn parse(item: &mut ItemImpl) -> Result<()> {
return Err(error!(item, "not all trait items implemented, missing: `drop`"));
}
for (i, item) in item.items.iter().enumerate() {
match item {
ImplItem::Const(item) => {
return Err(error!(
item,
"const `{}` is not a member of trait `PinnedDrop`", item.ident
));
}
ImplItem::Type(item) => {
return Err(error!(
item,
"type `{}` is not a member of trait `PinnedDrop`", item.ident
));
}
ImplItem::Method(method) => {
parse_method(method)?;
if i != 0 {
return Err(error!(method, "duplicate definitions with name `drop`"));
}
}
_ => parse_as_empty(&item.to_token_stream())?,
match &*item.self_ty {
Type::Path(_) => {}
ty => {
return Err(error!(
ty,
"implementing the trait `PinnedDrop` on this type is unsupported"
));
}
}
expand_item(item);
Ok(())
item.items
.iter()
.enumerate()
.try_for_each(|(i, item)| match item {
ImplItem::Const(item) => {
Err(error!(item, "const `{}` is not a member of trait `PinnedDrop`", item.ident))
}
ImplItem::Type(item) => {
Err(error!(item, "type `{}` is not a member of trait `PinnedDrop`", item.ident))
}
ImplItem::Method(method) => {
parse_method(method)?;
if i == 0 {
Ok(())
} else {
Err(error!(method, "duplicate definitions with name `drop`"))
}
}
_ => unreachable!("unexpected ImplItem"),
})
.map(|()| expand_item(item))
}
// from:
@ -162,6 +165,7 @@ fn parse(item: &mut ItemImpl) -> Result<()> {
//
// unsafe fn drop(self: Pin<&mut Self>) {
// fn __drop_inner<T>(__self: Pin<&mut Foo<'_, T>>) {
// fn __drop_inner() {}
// // something
// }
// __drop_inner(self);
@ -173,27 +177,35 @@ fn expand_item(item: &mut ItemImpl) {
let mut drop_inner = method.clone();
// `fn drop(mut self: Pin<&mut Self>)` -> `fn __drop_inner<T>(mut __self: Pin<&mut Receiver>)`
drop_inner.sig.ident = Ident::new("__drop_inner", drop_inner.sig.ident.span());
let ident = Ident::new("__drop_inner", drop_inner.sig.ident.span());
// Add a dummy `__drop_inner` function to prevent users call outer `__drop_inner`.
drop_inner.block.stmts.insert(0, parse_quote!(fn #ident() {}));
drop_inner.sig.ident = ident;
drop_inner.sig.generics = item.generics.clone();
if let FnArg::Typed(arg) = &mut drop_inner.sig.inputs[0] {
if let Pat::Ident(ident) = &mut *arg.pat {
prepend_underscore_to_self(&mut ident.ident);
}
}
let mut visitor = ReplaceReceiver::new(&item.self_ty);
let self_ty = if let Type::Path(ty) = &*item.self_ty { ty } else { unreachable!() };
let mut visitor = ReplaceReceiver(self_ty);
visitor.visit_signature_mut(&mut drop_inner.sig);
visitor.visit_block_mut(&mut drop_inner.block);
// `fn drop(mut self: Pin<&mut Self>)` -> `unsafe fn drop(self: Pin<&mut Self>)`
method.sig.unsafety = Some(token::Unsafe::default());
method.sig.unsafety = Some(<Token![unsafe]>::default());
let mut self_token = None;
if let FnArg::Typed(arg) = &mut method.sig.inputs[0] {
if let Pat::Ident(ident) = &mut *arg.pat {
ident.mutability = None;
self_token = Some(&ident.ident);
}
}
assert!(self_token.is_some());
method.block = syn::parse_quote! {{
method.block.stmts = parse_quote! {
#[allow(clippy::needless_pass_by_value)] // This lint does not warn the receiver.
#drop_inner
__drop_inner(self);
}};
__drop_inner(#self_token);
};
}

322
third_party/rust/pin-project-internal/src/project.rs vendored
View File

@ -5,23 +5,23 @@ use syn::{
*,
};
use crate::utils::*;
use crate::utils::{
determine_lifetime_name, insert_lifetime, parse_as_empty, ProjKind, SliceExt, VecExt,
};
pub(crate) fn attribute(args: &TokenStream, input: Stmt, mutability: Mutability) -> TokenStream {
parse_as_empty(args)
.and_then(|()| parse(input, mutability))
.unwrap_or_else(|e| e.to_compile_error())
pub(crate) fn attribute(args: &TokenStream, input: Stmt, kind: ProjKind) -> TokenStream {
parse_as_empty(args).and_then(|()| parse(input, kind)).unwrap_or_else(|e| e.to_compile_error())
}
fn replace_stmt(stmt: &mut Stmt, mutability: Mutability) -> Result<()> {
match stmt {
Stmt::Expr(Expr::Match(expr)) | Stmt::Semi(Expr::Match(expr), _) => {
Context::new(mutability).replace_expr_match(expr);
fn replace_expr(expr: &mut Expr, kind: ProjKind) {
match expr {
Expr::Match(expr) => {
Context::new(kind).replace_expr_match(expr);
}
Stmt::Expr(Expr::If(expr_if)) => {
Expr::If(expr_if) => {
let mut expr_if = expr_if;
while let Expr::Let(ref mut expr) = &mut *expr_if.cond {
Context::new(mutability).replace_expr_let(expr);
Context::new(kind).replace_expr_let(expr);
if let Some((_, ref mut expr)) = expr_if.else_branch {
if let Expr::If(new_expr_if) = &mut **expr {
expr_if = new_expr_if;
@ -31,18 +31,17 @@ fn replace_stmt(stmt: &mut Stmt, mutability: Mutability) -> Result<()> {
break;
}
}
Stmt::Local(local) => Context::new(mutability).replace_local(local)?,
_ => {}
}
Ok(())
}
fn parse(mut stmt: Stmt, mutability: Mutability) -> Result<TokenStream> {
replace_stmt(&mut stmt, mutability)?;
fn parse(mut stmt: Stmt, kind: ProjKind) -> Result<TokenStream> {
match &mut stmt {
Stmt::Item(Item::Fn(item)) => replace_item_fn(item, mutability)?,
Stmt::Item(Item::Impl(item)) => replace_item_impl(item, mutability),
Stmt::Item(Item::Use(item)) => replace_item_use(item, mutability)?,
Stmt::Expr(expr) | Stmt::Semi(expr, _) => replace_expr(expr, kind),
Stmt::Local(local) => Context::new(kind).replace_local(local)?,
Stmt::Item(Item::Fn(item)) => replace_item_fn(item, kind)?,
Stmt::Item(Item::Impl(item)) => replace_item_impl(item, kind)?,
Stmt::Item(Item::Use(item)) => replace_item_use(item, kind)?,
_ => {}
}
@ -52,28 +51,30 @@ fn parse(mut stmt: Stmt, mutability: Mutability) -> Result<TokenStream> {
struct Context {
register: Option<(Ident, usize)>,
replaced: bool,
mutability: Mutability,
kind: ProjKind,
}
impl Context {
fn new(mutability: Mutability) -> Self {
Self { register: None, replaced: false, mutability }
fn new(kind: ProjKind) -> Self {
Self { register: None, replaced: false, kind }
}
fn update(&mut self, ident: &Ident, len: usize) {
if self.register.is_none() {
self.register = Some((ident.clone(), len));
}
self.register.get_or_insert_with(|| (ident.clone(), len));
}
fn compare_paths(&self, ident: &Ident, len: usize) -> bool {
match &self.register {
Some((i, l)) => *l == len && ident == i,
Some((i, l)) => *l == len && i == ident,
None => false,
}
}
fn replace_local(&mut self, local: &mut Local) -> Result<()> {
if let Some(attr) = local.attrs.find(self.kind.method_name()) {
return Err(error!(attr, "duplicate #[{}] attribute", self.kind.method_name()));
}
if let Some(Expr::Match(expr)) = local.init.as_mut().map(|(_, expr)| &mut **expr) {
self.replace_expr_match(expr);
}
@ -99,7 +100,7 @@ impl Context {
}
fn replace_expr_match(&mut self, expr: &mut ExprMatch) {
expr.arms.iter_mut().for_each(|Arm { pat, .. }| self.replace_pat(pat, true))
expr.arms.iter_mut().for_each(|arm| self.replace_pat(&mut arm.pat, true))
}
fn replace_pat(&mut self, pat: &mut Pat, allow_pat_path: bool) {
@ -135,7 +136,7 @@ impl Context {
if self.register.is_none() || self.compare_paths(&path.segments[0].ident, len) {
self.update(&path.segments[0].ident, len);
self.replaced = true;
replace_ident(&mut path.segments[0].ident, self.mutability);
replace_ident(&mut path.segments[0].ident, self.kind);
}
}
}
@ -155,132 +156,195 @@ fn is_replaceable(pat: &Pat, allow_pat_path: bool) -> bool {
}
}
fn replace_item_impl(item: &mut ItemImpl, mutability: Mutability) {
fn replace_ident(ident: &mut Ident, kind: ProjKind) {
*ident = kind.proj_ident(ident);
}
fn replace_item_impl(item: &mut ItemImpl, kind: ProjKind) -> Result<()> {
if let Some(attr) = item.attrs.find(kind.method_name()) {
return Err(error!(attr, "duplicate #[{}] attribute", kind.method_name()));
}
let PathSegment { ident, arguments } = match &mut *item.self_ty {
Type::Path(TypePath { qself: None, path }) => path.segments.last_mut().unwrap(),
_ => return,
_ => return Ok(()),
};
replace_ident(ident, mutability);
replace_ident(ident, kind);
let mut lifetime_name = String::from(DEFAULT_LIFETIME_NAME);
determine_lifetime_name(&mut lifetime_name, &item.generics.params);
let mut lifetime_name = String::from("'pin");
determine_lifetime_name(&mut lifetime_name, &mut item.generics);
item.items
.iter_mut()
.filter_map(|i| if let ImplItem::Method(i) = i { Some(i) } else { None })
.for_each(|item| determine_lifetime_name(&mut lifetime_name, &item.sig.generics.params));
.for_each(|item| determine_lifetime_name(&mut lifetime_name, &mut item.sig.generics));
let lifetime = Lifetime::new(&lifetime_name, Span::call_site());
insert_lifetime(&mut item.generics, lifetime.clone());
match arguments {
PathArguments::None => {
*arguments = PathArguments::AngleBracketed(syn::parse_quote!(<#lifetime>));
*arguments = PathArguments::AngleBracketed(parse_quote!(<#lifetime>));
}
PathArguments::AngleBracketed(args) => {
args.args.insert(0, syn::parse_quote!(#lifetime));
args.args.insert(0, parse_quote!(#lifetime));
}
PathArguments::Parenthesized(_) => unreachable!(),
}
Ok(())
}
fn replace_item_fn(item: &mut ItemFn, mutability: Mutability) -> Result<()> {
let mut visitor = FnVisitor { res: Ok(()), mutability };
fn replace_item_fn(item: &mut ItemFn, kind: ProjKind) -> Result<()> {
struct FnVisitor(Result<()>);
impl FnVisitor {
fn visit_stmt(&mut self, node: &mut Stmt) -> Result<()> {
match node {
Stmt::Expr(expr) | Stmt::Semi(expr, _) => self.visit_expr(expr),
Stmt::Local(local) => {
visit_mut::visit_local_mut(self, local);
let mut prev = None;
for &kind in &ProjKind::ALL {
if let Some(attr) = local.attrs.find_remove(kind.method_name())? {
if let Some(prev) = prev.replace(kind) {
return Err(error!(
attr,
"attributes `{}` and `{}` are mutually exclusive",
prev.method_name(),
kind.method_name(),
));
}
Context::new(kind).replace_local(local)?;
}
}
Ok(())
}
// Do not recurse into nested items.
Stmt::Item(_) => Ok(()),
}
}
fn visit_expr(&mut self, node: &mut Expr) -> Result<()> {
visit_mut::visit_expr_mut(self, node);
match node {
Expr::Match(expr) => {
let mut prev = None;
for &kind in &ProjKind::ALL {
if let Some(attr) = expr.attrs.find_remove(kind.method_name())? {
if let Some(prev) = prev.replace(kind) {
return Err(error!(
attr,
"attributes `{}` and `{}` are mutually exclusive",
prev.method_name(),
kind.method_name(),
));
}
}
}
if let Some(kind) = prev {
replace_expr(node, kind);
}
}
Expr::If(expr_if) => {
if let Expr::Let(_) = &*expr_if.cond {
let mut prev = None;
for &kind in &ProjKind::ALL {
if let Some(attr) = expr_if.attrs.find_remove(kind.method_name())? {
if let Some(prev) = prev.replace(kind) {
return Err(error!(
attr,
"attributes `{}` and `{}` are mutually exclusive",
prev.method_name(),
kind.method_name(),
));
}
}
}
if let Some(kind) = prev {
replace_expr(node, kind);
}
}
}
_ => {}
}
Ok(())
}
}
impl VisitMut for FnVisitor {
fn visit_stmt_mut(&mut self, node: &mut Stmt) {
if self.0.is_err() {
return;
}
if let Err(e) = self.visit_stmt(node) {
self.0 = Err(e)
}
}
fn visit_expr_mut(&mut self, node: &mut Expr) {
if self.0.is_err() {
return;
}
if let Err(e) = self.visit_expr(node) {
self.0 = Err(e)
}
}
fn visit_item_mut(&mut self, _: &mut Item) {
// Do not recurse into nested items.
}
}
if let Some(attr) = item.attrs.find(kind.method_name()) {
return Err(error!(attr, "duplicate #[{}] attribute", kind.method_name()));
}
let mut visitor = FnVisitor(Ok(()));
visitor.visit_block_mut(&mut item.block);
visitor.res
visitor.0
}
fn replace_item_use(item: &mut ItemUse, mutability: Mutability) -> Result<()> {
let mut visitor = UseTreeVisitor { res: Ok(()), mutability };
fn replace_item_use(item: &mut ItemUse, kind: ProjKind) -> Result<()> {
struct UseTreeVisitor {
res: Result<()>,
kind: ProjKind,
}
impl VisitMut for UseTreeVisitor {
fn visit_use_tree_mut(&mut self, node: &mut UseTree) {
if self.res.is_err() {
return;
}
match node {
// Desugar `use tree::<name>` into `tree::__<name>Projection`.
UseTree::Name(name) => replace_ident(&mut name.ident, self.kind),
UseTree::Glob(glob) => {
self.res = Err(error!(
glob,
"#[{}] attribute may not be used on glob imports",
self.kind.method_name()
));
}
UseTree::Rename(rename) => {
self.res = Err(error!(
rename,
"#[{}] attribute may not be used on renamed imports",
self.kind.method_name()
));
}
UseTree::Path(_) | UseTree::Group(_) => visit_mut::visit_use_tree_mut(self, node),
}
}
}
if let Some(attr) = item.attrs.find(kind.method_name()) {
return Err(error!(attr, "duplicate #[{}] attribute", kind.method_name()));
}
let mut visitor = UseTreeVisitor { res: Ok(()), kind };
visitor.visit_item_use_mut(item);
visitor.res
}
fn replace_ident(ident: &mut Ident, mutability: Mutability) {
*ident = proj_ident(ident, mutability);
}
// =================================================================================================
// visitors
struct FnVisitor {
res: Result<()>,
mutability: Mutability,
}
impl FnVisitor {
/// Returns the attribute name.
fn name(&self) -> &str {
if self.mutability == Mutable { "project" } else { "project_ref" }
}
fn visit_stmt(&mut self, node: &mut Stmt) -> Result<()> {
let attr = match node {
Stmt::Expr(Expr::Match(expr)) | Stmt::Semi(Expr::Match(expr), _) => {
expr.attrs.find_remove(self.name())?
}
Stmt::Local(local) => local.attrs.find_remove(self.name())?,
Stmt::Expr(Expr::If(expr_if)) => {
if let Expr::Let(_) = &*expr_if.cond {
expr_if.attrs.find_remove(self.name())?
} else {
None
}
}
_ => return Ok(()),
};
if let Some(attr) = attr {
parse_as_empty(&attr.tokens)?;
replace_stmt(node, self.mutability)?;
}
Ok(())
}
}
impl VisitMut for FnVisitor {
fn visit_stmt_mut(&mut self, node: &mut Stmt) {
if self.res.is_err() {
return;
}
visit_mut::visit_stmt_mut(self, node);
if let Err(e) = self.visit_stmt(node) {
self.res = Err(e)
}
}
fn visit_item_mut(&mut self, _: &mut Item) {
// Do not recurse into nested items.
}
}
struct UseTreeVisitor {
res: Result<()>,
mutability: Mutability,
}
impl VisitMut for UseTreeVisitor {
fn visit_use_tree_mut(&mut self, node: &mut UseTree) {
if self.res.is_err() {
return;
}
match node {
// Desugar `use tree::<name>` into `tree::__<name>Projection`.
UseTree::Name(name) => replace_ident(&mut name.ident, self.mutability),
UseTree::Glob(glob) => {
self.res =
Err(error!(glob, "#[project] attribute may not be used on glob imports"));
}
UseTree::Rename(rename) => {
// TODO: Consider allowing the projected type to be renamed by `#[project] use Foo as Bar`.
self.res =
Err(error!(rename, "#[project] attribute may not be used on renamed imports"));
}
node @ UseTree::Path(_) | node @ UseTree::Group(_) => {
visit_mut::visit_use_tree_mut(self, node)
}
}
}
}

322
third_party/rust/pin-project-internal/src/utils.rs vendored
View File

@ -1,21 +1,15 @@
use std::mem;
use std::{iter::FromIterator, mem};
use proc_macro2::{Group, TokenStream, TokenTree};
use quote::{format_ident, quote_spanned};
use proc_macro2::{Group, Spacing, Span, TokenStream, TokenTree};
use quote::{format_ident, quote, quote_spanned, ToTokens};
use syn::{
parse::{ParseBuffer, ParseStream},
parse::{Parse, ParseBuffer, ParseStream},
punctuated::Punctuated,
token::{self, Comma},
visit_mut::{self, VisitMut},
*,
};
pub(crate) const DEFAULT_LIFETIME_NAME: &str = "'pin";
pub(crate) const CURRENT_PRIVATE_MODULE: &str = "__private";
pub(crate) type Variants = Punctuated<Variant, token::Comma>;
pub(crate) use Mutability::{Immutable, Mutable};
pub(crate) type Variants = Punctuated<Variant, Token![,]>;
macro_rules! error {
($span:expr, $msg:expr) => {
@ -26,37 +20,59 @@ macro_rules! error {
};
}
#[derive(Clone, Copy, Eq, PartialEq)]
pub(crate) enum Mutability {
Mutable,
Immutable,
macro_rules! parse_quote_spanned {
($span:expr => $($tt:tt)*) => {
syn::parse2(quote::quote_spanned!($span => $($tt)*)).unwrap_or_else(|e| panic!("{}", e))
};
}
/// Creates the ident of projected type from the ident of the original type.
pub(crate) fn proj_ident(ident: &Ident, mutability: Mutability) -> Ident {
if mutability == Mutable {
format_ident!("__{}Projection", ident)
} else {
format_ident!("__{}ProjectionRef", ident)
#[derive(Clone, Copy, Eq, PartialEq)]
pub(crate) enum ProjKind {
Mutable,
Immutable,
Owned,
}
impl ProjKind {
pub(crate) const ALL: [Self; 3] = [ProjKind::Mutable, ProjKind::Immutable, ProjKind::Owned];
/// Returns the name of the projection method.
pub(crate) fn method_name(self) -> &'static str {
match self {
ProjKind::Mutable => "project",
ProjKind::Immutable => "project_ref",
ProjKind::Owned => "project_replace",
}
}
/// Creates the ident of the projected type from the ident of the original
/// type.
pub(crate) fn proj_ident(self, ident: &Ident) -> Ident {
match self {
ProjKind::Mutable => format_ident!("__{}Projection", ident),
ProjKind::Immutable => format_ident!("__{}ProjectionRef", ident),
ProjKind::Owned => format_ident!("__{}ProjectionOwned", ident),
}
}
}
/// Determines the lifetime names. Ensure it doesn't overlap with any existing lifetime names.
pub(crate) fn determine_lifetime_name(
lifetime_name: &mut String,
generics: &Punctuated<GenericParam, Comma>,
) {
let existing_lifetimes: Vec<String> = generics
.iter()
.filter_map(|param| {
if let GenericParam::Lifetime(LifetimeDef { lifetime, .. }) = param {
Some(lifetime.to_string())
} else {
None
}
})
.collect();
while existing_lifetimes.iter().any(|name| name.starts_with(&**lifetime_name)) {
/// Determines the lifetime names. Ensure it doesn't overlap with any existing
/// lifetime names.
pub(crate) fn determine_lifetime_name(lifetime_name: &mut String, generics: &mut Generics) {
struct CollectLifetimes(Vec<String>);
impl VisitMut for CollectLifetimes {
fn visit_lifetime_def_mut(&mut self, def: &mut LifetimeDef) {
self.0.push(def.lifetime.to_string());
}
}
debug_assert!(lifetime_name.starts_with('\''));
let mut lifetimes = CollectLifetimes(Vec::new());
lifetimes.visit_generics_mut(generics);
while lifetimes.0.iter().any(|name| name.starts_with(&**lifetime_name)) {
lifetime_name.push('_');
}
}
@ -68,68 +84,70 @@ pub(crate) fn insert_lifetime_and_bound(
generics: &mut Generics,
lifetime: Lifetime,
orig_generics: &Generics,
orig_ident: Ident,
orig_ident: &Ident,
) -> WherePredicate {
insert_lifetime(generics, lifetime.clone());
let orig_type: syn::Type = syn::parse_quote!(#orig_ident #orig_generics);
let orig_type: Type = parse_quote!(#orig_ident #orig_generics);
let mut punct = Punctuated::new();
punct.push(TypeParamBound::Lifetime(lifetime));
WherePredicate::Type(PredicateType {
lifetimes: None,
bounded_ty: orig_type,
colon_token: syn::token::Colon::default(),
colon_token: <Token![:]>::default(),
bounds: punct,
})
}
/// Inserts a `lifetime` at position `0` of `generics.params`.
pub(crate) fn insert_lifetime(generics: &mut Generics, lifetime: Lifetime) {
if generics.lt_token.is_none() {
generics.lt_token = Some(token::Lt::default())
}
if generics.gt_token.is_none() {
generics.gt_token = Some(token::Gt::default())
}
generics.params.insert(
0,
GenericParam::Lifetime(LifetimeDef {
attrs: Vec::new(),
lifetime,
colon_token: None,
bounds: Punctuated::new(),
}),
);
generics.lt_token.get_or_insert_with(<Token![<]>::default);
generics.gt_token.get_or_insert_with(<Token![>]>::default);
generics.params.insert(0, LifetimeDef::new(lifetime).into());
}
/// Determines the visibility of the projected type and projection method.
pub(crate) fn determine_visibility(vis: &Visibility) -> Visibility {
if let Visibility::Public(token) = vis {
syn::parse2(quote_spanned! { token.pub_token.span =>
pub(crate)
})
.unwrap()
parse_quote_spanned!(token.pub_token.span => pub(crate))
} else {
vis.clone()
}
}
/// Check if `tokens` is an empty `TokenStream`.
/// This is almost equivalent to `syn::parse2::<Nothing>()`,
/// but produces a better error message and does not require ownership of `tokens`.
/// This is almost equivalent to `syn::parse2::<Nothing>()`, but produces
/// a better error message and does not require ownership of `tokens`.
pub(crate) fn parse_as_empty(tokens: &TokenStream) -> Result<()> {
if tokens.is_empty() { Ok(()) } else { Err(error!(tokens, "unexpected token: {}", tokens)) }
}
pub(crate) fn respan<T>(node: &T, span: Span) -> T
where
T: ToTokens + Parse,
{
let tokens = node.to_token_stream();
let respanned = respan_tokens(tokens, span);
syn::parse2(respanned).unwrap()
}
fn respan_tokens(tokens: TokenStream, span: Span) -> TokenStream {
tokens
.into_iter()
.map(|mut token| {
token.set_span(span);
token
})
.collect()
}
// =================================================================================================
// extension traits
pub(crate) trait SliceExt {
fn position_exact(&self, ident: &str) -> Result<Option<usize>>;
fn find(&self, ident: &str) -> Option<&Attribute>;
fn find_exact(&self, ident: &str) -> Result<Option<&Attribute>>;
}
pub(crate) trait VecExt {
@ -141,11 +159,10 @@ impl SliceExt for [Attribute] {
self.iter()
.try_fold((0, None), |(i, mut prev), attr| {
if attr.path.is_ident(ident) {
if prev.is_some() {
if prev.replace(i).is_some() {
return Err(error!(attr, "duplicate #[{}] attribute", ident));
}
parse_as_empty(&attr.tokens)?;
prev = Some(i);
}
Ok((i + 1, prev))
})
@ -155,10 +172,6 @@ impl SliceExt for [Attribute] {
fn find(&self, ident: &str) -> Option<&Attribute> {
self.iter().position(|attr| attr.path.is_ident(ident)).and_then(|i| self.get(i))
}
fn find_exact(&self, ident: &str) -> Result<Option<&Attribute>> {
self.position_exact(ident).map(|pos| pos.and_then(|i| self.get(i)))
}
}
impl VecExt for Vec<Attribute> {
@ -191,18 +204,16 @@ impl<'a> ParseBufferExt<'a> for ParseBuffer<'a> {
// visitors
// Replace `self`/`Self` with `__self`/`self_ty`.
// Based on https://github.com/dtolnay/async-trait/blob/0.1.22/src/receiver.rs
// Based on https://github.com/dtolnay/async-trait/blob/0.1.35/src/receiver.rs
pub(crate) struct ReplaceReceiver<'a> {
self_ty: &'a Type,
}
pub(crate) struct ReplaceReceiver<'a>(pub(crate) &'a TypePath);
impl<'a> ReplaceReceiver<'a> {
pub(crate) fn new(self_ty: &'a Type) -> Self {
Self { self_ty }
impl ReplaceReceiver<'_> {
fn self_ty(&self, span: Span) -> TypePath {
respan(self.0, span)
}
fn self_to_qself(&mut self, qself: &mut Option<QSelf>, path: &mut Path) {
fn self_to_qself(&self, qself: &mut Option<QSelf>, path: &mut Path) {
if path.leading_colon.is_some() {
return;
}
@ -217,39 +228,91 @@ impl<'a> ReplaceReceiver<'a> {
return;
}
let span = first.ident.span();
*qself = Some(QSelf {
lt_token: token::Lt::default(),
ty: Box::new(self.self_ty.clone()),
lt_token: Token![<](span),
ty: Box::new(self.self_ty(span).into()),
position: 0,
as_token: None,
gt_token: token::Gt::default(),
gt_token: Token![>](span),
});
match path.segments.pairs().next().unwrap().punct() {
Some(&&colon) => path.leading_colon = Some(colon),
None => return,
}
path.leading_colon = Some(**path.segments.pairs().next().unwrap().punct().unwrap());
let segments = mem::replace(&mut path.segments, Punctuated::new());
path.segments = segments.into_pairs().skip(1).collect();
}
fn self_to_expr_path(&self, path: &mut Path) {
if let Type::Path(self_ty) = &self.self_ty {
*path = self_ty.path.clone();
for segment in &mut path.segments {
if let PathArguments::AngleBracketed(bracketed) = &mut segment.arguments {
if bracketed.colon2_token.is_none() && !bracketed.args.is_empty() {
bracketed.colon2_token = Some(token::Colon2::default());
}
if path.leading_colon.is_some() {
return;
}
let first = &path.segments[0];
if first.ident != "Self" || !first.arguments.is_empty() {
return;
}
let self_ty = self.self_ty(first.ident.span());
let variant = mem::replace(path, self_ty.path);
for segment in &mut path.segments {
if let PathArguments::AngleBracketed(bracketed) = &mut segment.arguments {
if bracketed.colon2_token.is_none() && !bracketed.args.is_empty() {
bracketed.colon2_token = Some(<Token![::]>::default());
}
}
} else {
let span = path.segments[0].ident.span();
let msg = "Self type of this impl is unsupported in expression position";
let error = Error::new(span, msg).to_compile_error();
*path = parse_quote!(::core::marker::PhantomData::<#error>);
}
if variant.segments.len() > 1 {
path.segments.push_punct(<Token![::]>::default());
path.segments.extend(variant.segments.into_pairs().skip(1));
}
}
fn visit_token_stream(&self, tokens: &mut TokenStream) -> bool {
let mut out = Vec::new();
let mut modified = false;
let mut iter = tokens.clone().into_iter().peekable();
while let Some(tt) = iter.next() {
match tt {
TokenTree::Ident(mut ident) => {
modified |= prepend_underscore_to_self(&mut ident);
if ident == "Self" {
modified = true;
let self_ty = self.self_ty(ident.span());
match iter.peek() {
Some(TokenTree::Punct(p))
if p.as_char() == ':' && p.spacing() == Spacing::Joint =>
{
let next = iter.next().unwrap();
match iter.peek() {
Some(TokenTree::Punct(p)) if p.as_char() == ':' => {
let span = ident.span();
out.extend(quote_spanned!(span=> <#self_ty>))
}
_ => out.extend(quote!(#self_ty)),
}
out.push(next);
}
_ => out.extend(quote!(#self_ty)),
}
} else {
out.push(TokenTree::Ident(ident));
}
}
TokenTree::Group(group) => {
let mut content = group.stream();
modified |= self.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),
}
}
if modified {
*tokens = TokenStream::from_iter(out);
}
modified
}
}
@ -258,7 +321,7 @@ impl VisitMut for ReplaceReceiver<'_> {
fn visit_type_mut(&mut self, ty: &mut Type) {
if let Type::Path(node) = ty {
if node.qself.is_none() && node.path.is_ident("Self") {
*ty = self.self_ty.clone();
*ty = self.self_ty(node.path.segments[0].ident.span()).into();
} else {
self.visit_type_path_mut(node);
}
@ -285,26 +348,48 @@ impl VisitMut for ReplaceReceiver<'_> {
}
fn visit_expr_struct_mut(&mut self, expr: &mut ExprStruct) {
if expr.path.is_ident("Self") {
self.self_to_expr_path(&mut expr.path);
}
self.self_to_expr_path(&mut expr.path);
visit_mut::visit_expr_struct_mut(self, expr);
}
fn visit_macro_mut(&mut self, node: &mut Macro) {
fn visit_pat_path_mut(&mut self, pat: &mut PatPath) {
if pat.qself.is_none() {
self.self_to_qself(&mut pat.qself, &mut pat.path);
}
visit_mut::visit_pat_path_mut(self, pat);
}
fn visit_pat_struct_mut(&mut self, pat: &mut PatStruct) {
self.self_to_expr_path(&mut pat.path);
visit_mut::visit_pat_struct_mut(self, pat);
}
fn visit_pat_tuple_struct_mut(&mut self, pat: &mut PatTupleStruct) {
self.self_to_expr_path(&mut pat.path);
visit_mut::visit_pat_tuple_struct_mut(self, pat);
}
fn visit_item_mut(&mut self, item: &mut Item) {
match item {
// Visit `macro_rules!` because locally defined macros can refer to `self`.
Item::Macro(item) if item.mac.path.is_ident("macro_rules") => {
self.visit_macro_mut(&mut item.mac)
}
// Otherwise, do not recurse into nested items.
_ => {}
}
}
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(node.tokens.clone()) {
node.tokens = fold_token_stream(node.tokens.clone());
if !contains_fn(mac.tokens.clone()) {
self.visit_token_stream(&mut mac.tokens);
}
}
fn visit_item_mut(&mut self, _: &mut Item) {
// Do not recurse into nested items.
}
}
fn contains_fn(tokens: TokenStream) -> bool {
@ -315,25 +400,10 @@ fn contains_fn(tokens: TokenStream) -> bool {
})
}
fn fold_token_stream(tokens: TokenStream) -> TokenStream {
tokens
.into_iter()
.map(|tt| match tt {
TokenTree::Ident(mut ident) => {
prepend_underscore_to_self(&mut ident);
TokenTree::Ident(ident)
}
TokenTree::Group(group) => {
let content = fold_token_stream(group.stream());
TokenTree::Group(Group::new(group.delimiter(), content))
}
other => other,
})
.collect()
}
pub(crate) fn prepend_underscore_to_self(ident: &mut Ident) {
if ident == "self" {
pub(crate) fn prepend_underscore_to_self(ident: &mut Ident) -> bool {
let modified = ident == "self";
if modified {
*ident = Ident::new("__self", ident.span());
}
modified
}

2
third_party/rust/pin-project/.cargo-checksum.json vendored
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467
third_party/rust/pin-project/CHANGELOG.md vendored
View File

@ -6,133 +6,324 @@ This project adheres to [Semantic Versioning](https://semver.org).
## [Unreleased]
## [0.4.28] - 2021-03-28
- [Fix `unused_must_use` warning on unused borrows, which will be added to rustc in the future.](https://github.com/taiki-e/pin-project/pull/322) See [#322](https://github.com/taiki-e/pin-project/pull/322) for more details.
(Note: 1.0 does not have this problem.)
## [0.4.27] - 2020-10-11
- Update minimal version of `syn` to 1.0.44
## [0.4.26] - 2020-10-04
- [Fix drop order of pinned fields in `project_replace`.](https://github.com/taiki-e/pin-project/pull/287)
## [0.4.25] - 2020-10-01
- [Suppress `drop_bounds` lint, which will be added to rustc in the future.](https://github.com/taiki-e/pin-project/pull/273) See [#272](https://github.com/taiki-e/pin-project/issues/272) for more details.
(Note: 1.0.0-alpha.1 already contains this change.)
## [0.4.24] - 2020-09-26
- [Fix compatibility of generated code with `forbid(future_incompatible)`.](https://github.com/taiki-e/pin-project/pull/282)
Note: This does not guarantee compatibility with `forbid(future_incompatible)` in the future.
If rustc adds a new lint, we may not be able to keep this.
## [0.4.23] - 2020-07-27
- [Fix compile error with `?Sized` type parameters.](https://github.com/taiki-e/pin-project/pull/263)
## [0.4.22] - 2020-06-14
- Documentation improvements.
## [0.4.21] - 2020-06-13
- [Deprecated `#[project]`, `#[project_ref]`, and `#[project_replace]` attributes due to some unfixable limitations.](https://github.com/taiki-e/pin-project/pull/244)
Consider naming the projected type by passing an argument with the same name as the method to the `#[pin_project]` attribute instead.
```rust
#[pin_project(project = EnumProj)]
enum Enum<T> {
Variant(#[pin] T),
}
fn func<T>(x: Pin<&mut Enum<T>>) {
match x.project() {
EnumProj::Variant(y) => {
let _: Pin<&mut T> = y;
}
}
}
```
See [#225](https://github.com/taiki-e/pin-project/pull/225) for more details.
- [Support `Self` in fields and generics in type definitions.](https://github.com/taiki-e/pin-project/pull/245)
- [Fix errors involving *"`self` value is a keyword only available in methods with `self` parameter"* in apparently correct code.](https://github.com/taiki-e/pin-project/pull/250)
- Diagnostic improvements.
## [0.4.20] - 2020-06-07
- [You can now use `project_replace` argument without Replace argument.](https://github.com/taiki-e/pin-project/pull/243)
This used to require you to specify both.
```diff
- #[pin_project(Replace, project_replace = EnumProjOwn)]
+ #[pin_project(project_replace = EnumProjOwn)]
enum Enum<T> {
Variant(#[pin] T)
}
```
- [Make `project_replace` argument an alias for `Replace` argument so that it can be used without a value.](https://github.com/taiki-e/pin-project/pull/243)
```rust
#[pin_project(project_replace)]
enum Enum<T> {
Variant(#[pin] T)
}
```
*The `Replace` argument will be deprecated in the future.*
- [Suppress `unreachable_pub` lint in generated code.](https://github.com/taiki-e/pin-project/pull/240)
## [0.4.19] - 2020-06-04
- [Suppress `unused_results` lint in generated code.](https://github.com/taiki-e/pin-project/pull/239)
## [0.4.18] - 2020-06-04
- [Support `Self` in more syntax positions inside `#[pinned_drop]` impl.](https://github.com/taiki-e/pin-project/pull/230)
- [Suppress `clippy::type_repetition_in_bounds` and `clippy::used_underscore_binding` lints in generated code.](https://github.com/taiki-e/pin-project/pull/233)
- Documentation improvements.
- Diagnostic improvements.
## [0.4.17] - 2020-05-18
- [Support naming the projection types.](https://github.com/taiki-e/pin-project/pull/202)
By passing an argument with the same name as the method to the attribute, you can name the projection type returned from the method:
```rust
#[pin_project(project = EnumProj)]
enum Enum<T> {
Variant(#[pin] T),
}
fn func<T>(x: Pin<&mut Enum<T>>) {
match x.project() {
EnumProj::Variant(y) => {
let _: Pin<&mut T> = y;
}
}
}
```
## [0.4.16] - 2020-05-11
- [Fix an issue that users can call internal function generated by `#[pinned_drop]`.](https://github.com/taiki-e/pin-project/pull/223)
## [0.4.15] - 2020-05-10
- [`#[project]` attribute can now handle all `project*` attributes in that scope with one wrapper attribute.](https://github.com/taiki-e/pin-project/pull/220)
## [0.4.14] - 2020-05-09
- [Add `!Unpin` option to `#[pin_project]` attribute for guarantee the type is `!Unpin`.](https://github.com/taiki-e/pin-project/pull/219)
```rust
#[pin_project(!Unpin)]
struct Struct<T, U> {
field: T,
}
```
This is equivalent to use `#[pin]` attribute for `PhantomPinned` field.
```rust
#[pin_project]
struct Struct<T, U> {
field: T,
#[pin] // Note that using `PhantomPinned` without `#[pin]` attribute has no effect.
_pin: PhantomPinned,
}
```
*[Note: This raises the minimum supported Rust version of this crate from Rust 1.33 to Rust 1.34.](https://github.com/taiki-e/pin-project/pull/219#pullrequestreview-408644187)*
- [Fix an issue where duplicate `#[project]` attributes were ignored.](https://github.com/taiki-e/pin-project/pull/218)
- [Suppress `single_use_lifetimes` lint in generated code.](https://github.com/taiki-e/pin-project/pull/217)
- [Support overlapping lifetime names in HRTB.](https://github.com/taiki-e/pin-project/pull/217)
- [Hide generated items from --document-private-items.](https://github.com/taiki-e/pin-project/pull/211) See [#211](https://github.com/taiki-e/pin-project/pull/211) for details.
- Documentation improvements.
## [0.4.13] - 2020-05-07
- [Fix a regression in 0.4.11.](https://github.com/taiki-e/pin-project/pull/207)
Changes from [0.4.10](https://github.com/taiki-e/pin-project/releases/tag/v0.4.10) and [0.4.12](https://github.com/taiki-e/pin-project/releases/tag/v0.4.12):
- [Fix an issue that `#[project]` on non-statement expression does not work without unstable features.](https://github.com/taiki-e/pin-project/pull/197)
- [Support overwriting the name of core crate.](https://github.com/taiki-e/pin-project/pull/199)
- [Suppress `clippy::needless_pass_by_value` lint in generated code of `#[pinned_drop]`.](https://github.com/taiki-e/pin-project/pull/200)
- Documentation improvements.
- Diagnostic improvements.
## [0.4.12] - 2020-05-07
- A release to avoid [a regression in 0.4.11](https://github.com/taiki-e/pin-project/issues/206). No code changes from [0.4.10](https://github.com/taiki-e/pin-project/releases/tag/v0.4.10).
## [0.4.11] - 2020-05-07
**Note: This release has been yanked.** See [#206](https://github.com/taiki-e/pin-project/issues/206) for details.
- [Fix an issue that `#[project]` on non-statement expression does not work without unstable features.](https://github.com/taiki-e/pin-project/pull/197)
- [Support overwriting the name of core crate.](https://github.com/taiki-e/pin-project/pull/199)
- [Suppress `clippy::needless_pass_by_value` lint in generated code of `#[pinned_drop]`.](https://github.com/taiki-e/pin-project/pull/200)
- Documentation improvements.
- Diagnostic improvements.
## [0.4.10] - 2020-05-04
- [Add `project_replace` method and `#[project_replace]` attribute.](https://github.com/taiki-e/pin-project/pull/194)
`project_replace` method is optional and can be enabled by passing the `Replace` argument to `#[pin_project]` attribute.
See [the documentation](https://docs.rs/pin-project/0.4/pin_project/attr.pin_project.html#project_replace) for more details.
- [Support `Self` and `self` in more syntax positions inside `#[pinned_drop]` impl.](https://github.com/taiki-e/pin-project/pull/190)
- [Hide all generated items except for projected types from calling code.](https://github.com/taiki-e/pin-project/pull/192) See [#192](https://github.com/taiki-e/pin-project/pull/192) for details.
## [0.4.9] - 2020-04-14
* [Fixed lifetime inference error when associated types are used in fields.][188]
- [Fix lifetime inference error when associated types are used in fields.](https://github.com/taiki-e/pin-project/pull/188)
* [Fixed compile error with tuple structs with `where` clauses.][186]
- [Fix compile error with tuple structs with `where` clauses.](https://github.com/taiki-e/pin-project/pull/186)
* [`#[project]` attribute can now be used for `if let` expressions.][181]
[188]: https://github.com/taiki-e/pin-project/pull/188
[186]: https://github.com/taiki-e/pin-project/pull/186
[181]: https://github.com/taiki-e/pin-project/pull/181
- [`#[project]` attribute can now be used for `if let` expressions.](https://github.com/taiki-e/pin-project/pull/181)
## [0.4.8] - 2020-01-27
* [Ensured that users cannot implement `PinnedDrop` without proper attribute argument.][180]
- [Ensure that users cannot implement `PinnedDrop` without proper attribute argument.](https://github.com/taiki-e/pin-project/pull/180)
[180]: https://github.com/taiki-e/pin-project/pull/180
- [Fix use of `Self` in expression position inside `#[pinned_drop]` impl.](https://github.com/taiki-e/pin-project/pull/177)
## [0.4.7] - 2020-01-20
* [Fixed support for lifetime bounds.][176]
[176]: https://github.com/taiki-e/pin-project/pull/176
- [Fix support for lifetime bounds.](https://github.com/taiki-e/pin-project/pull/176)
## [0.4.6] - 2019-11-20
* [Fixed compile error when there is `Self` in the where clause.][169]
[169]: https://github.com/taiki-e/pin-project/pull/169
- [Fix compile error when there is `Self` in the where clause.](https://github.com/taiki-e/pin-project/pull/169)
## [0.4.5] - 2019-10-21
* [Fixed compile error with `dyn` types.][158]
[158]: https://github.com/taiki-e/pin-project/pull/158
- [Fix compile error with `dyn` types.](https://github.com/taiki-e/pin-project/pull/158)
## [0.4.4] - 2019-10-17
* [Fixed an issue where `PinnedDrop` implementations can call unsafe code without an unsafe block.][149]
- [Fix an issue where `PinnedDrop` implementations can call unsafe code without an unsafe block.](https://github.com/taiki-e/pin-project/pull/149)
[149]: https://github.com/taiki-e/pin-project/pull/149
## [0.4.3] - 2019-10-15
## [0.4.3] - 2019-10-15 - YANKED
**Note: This release has been yanked.** See [#148](https://github.com/taiki-e/pin-project/pull/148) for details.
* [`#[pin_project]` can now interoperate with `#[cfg_attr()]`.][135]
- [`#[pin_project]` can now interoperate with `#[cfg_attr()]`.](https://github.com/taiki-e/pin-project/pull/135)
* [`#[pin_project]` can now interoperate with `#[cfg()]` on tuple structs and tuple variants.][135]
- [`#[pin_project]` can now interoperate with `#[cfg()]` on tuple structs and tuple variants.](https://github.com/taiki-e/pin-project/pull/135)
* [Fixed support for DSTs(Dynamically Sized Types) on `#[pin_project(UnsafeUnpin)]`][120]
- [Fix support for DSTs(Dynamically Sized Types) on `#[pin_project(UnsafeUnpin)]`](https://github.com/taiki-e/pin-project/pull/120)
[120]: https://github.com/taiki-e/pin-project/pull/120
[135]: https://github.com/taiki-e/pin-project/pull/135
- Diagnostic improvements.
## [0.4.2] - 2019-09-29 - YANKED
## [0.4.2] - 2019-09-29
* [Fixed support for DSTs(Dynamically Sized Types).][113]
**Note: This release has been yanked.** See [#148](https://github.com/taiki-e/pin-project/pull/148) for details.
[113]: https://github.com/taiki-e/pin-project/pull/113
- [Fix support for DSTs(Dynamically Sized Types).](https://github.com/taiki-e/pin-project/pull/113)
## [0.4.1] - 2019-09-26 - YANKED
## [0.4.1] - 2019-09-26
* [Fixed an issue that caused an error when using `#[pin_project]` on a type that has `#[pin]` + `!Unpin` field with no generics or lifetime.][111]
**Note: This release has been yanked.** See [#148](https://github.com/taiki-e/pin-project/pull/148) for details.
[111]: https://github.com/taiki-e/pin-project/pull/111
- [Fix an issue that caused an error when using `#[pin_project]` on a type that has `#[pin]` + `!Unpin` field with no generics or lifetime.](https://github.com/taiki-e/pin-project/pull/111)
## [0.4.0] - 2019-09-25 - YANKED
## [0.4.0] - 2019-09-25
* [**Pin projection has become a safe operation.**][18] In the absence of other unsafe code that you write, it is impossible to cause undefined behavior.
**Note: This release has been yanked.** See [#148](https://github.com/taiki-e/pin-project/pull/148) for details.
* `#[unsafe_project]` attribute has been replaced with `#[pin_project]` attribute. ([#18][18], [#33][33])
- [**Pin projection has become a safe operation.**](https://github.com/taiki-e/pin-project/pull/18) In the absence of other unsafe code that you write, it is impossible to cause undefined behavior.
* [The `Unpin` argument has been removed - an `Unpin` impl is now generated by default.][18]
- `#[unsafe_project]` attribute has been replaced with `#[pin_project]` attribute. ([#18](https://github.com/taiki-e/pin-project/pull/18), [#33](https://github.com/taiki-e/pin-project/pull/33))
* Drop impls must be specified with `#[pinned_drop]` instead of via a normal `Drop` impl. ([#18][18], [#33][33], [#86][86])
- [The `Unpin` argument has been removed - an `Unpin` impl is now generated by default.](https://github.com/taiki-e/pin-project/pull/18)
* [`Unpin` impls must be specified with an impl of `UnsafeUnpin`, instead of implementing the normal `Unpin` trait.][18]
- Drop impls must be specified with `#[pinned_drop]` instead of via a normal `Drop` impl. ([#18](https://github.com/taiki-e/pin-project/pull/18), [#33](https://github.com/taiki-e/pin-project/pull/33), [#86](https://github.com/taiki-e/pin-project/pull/86))
* [`#[pin_project]` attribute now determines the visibility of the projection type/method is based on the original type.][96]
- [`Unpin` impls must be specified with an impl of `UnsafeUnpin`, instead of implementing the normal `Unpin` trait.](https://github.com/taiki-e/pin-project/pull/18)
* [`#[pin_project]` can now be used for public type with private field types.][53]
- [`#[pin_project]` attribute now determines the visibility of the projection type/method is based on the original type.](https://github.com/taiki-e/pin-project/pull/96)
* [`#[pin_project]` can now interoperate with `#[cfg()]`.][77]
- [`#[pin_project]` can now be used for public type with private field types.](https://github.com/taiki-e/pin-project/pull/53)
* [Added `project_ref` method to `#[pin_project]` types.][93]
- [`#[pin_project]` can now interoperate with `#[cfg()]`.](https://github.com/taiki-e/pin-project/pull/77)
* [Added `#[project_ref]` attribute.][93]
- [Add `project_ref` method to `#[pin_project]` types.](https://github.com/taiki-e/pin-project/pull/93)
* [Removed "project_attr" feature and always enable `#[project]` attribute.][94]
- [Add `#[project_ref]` attribute.](https://github.com/taiki-e/pin-project/pull/93)
* [`#[project]` attribute can now be used for `impl` blocks.][46]
- [Remove "project_attr" feature and always enable `#[project]` attribute.](https://github.com/taiki-e/pin-project/pull/94)
* [`#[project]` attribute can now be used for `use` statements.][85]
- [`#[project]` attribute can now be used for `impl` blocks.](https://github.com/taiki-e/pin-project/pull/46)
* [`#[project]` attribute now supports `match` expressions at the position of the initializer expression of `let` expressions.][51]
- [`#[project]` attribute can now be used for `use` statements.](https://github.com/taiki-e/pin-project/pull/85)
- [`#[project]` attribute now supports `match` expressions at the position of the initializer expression of `let` expressions.](https://github.com/taiki-e/pin-project/pull/51)
Changes since the 0.4.0-beta.1 release:
* [Fixed an issue that caused an error when using `#[pin_project(UnsafeUnpin)]` and not providing a manual `UnsafeUnpin` implementation on a type with no generics or lifetime.][107]
[18]: https://github.com/taiki-e/pin-project/pull/18
[33]: https://github.com/taiki-e/pin-project/pull/107
[107]: https://github.com/taiki-e/pin-project/pull/107
- [Fix an issue that caused an error when using `#[pin_project(UnsafeUnpin)]` and not providing a manual `UnsafeUnpin` implementation on a type with no generics or lifetime.](https://github.com/taiki-e/pin-project/pull/107)
## [0.4.0-beta.1] - 2019-09-21
* [Changed the argument type of project method back to `self: Pin<&mut Self>`.][90]
- [Change the argument type of project method back to `self: Pin<&mut Self>`.](https://github.com/taiki-e/pin-project/pull/90)
* [Removed "project_attr" feature and always enable `#[project]` attribute.][94]
- [Remove "project_attr" feature and always enable `#[project]` attribute.](https://github.com/taiki-e/pin-project/pull/94)
* [Removed "renamed" feature.][100]
- [Remove "renamed" feature.](https://github.com/taiki-e/pin-project/pull/100)
* [`#[project]` attribute can now be used for `use` statements.][85]
- [`#[project]` attribute can now be used for `use` statements.](https://github.com/taiki-e/pin-project/pull/85)
* [Added `project_ref` method and `#[project_ref]` attribute.][93]
- [Add `project_ref` method and `#[project_ref]` attribute.](https://github.com/taiki-e/pin-project/pull/93)
* [`#[pin_project]` attribute now determines the visibility of the projection type/method is based on the original type.][96]
[85]: https://github.com/taiki-e/pin-project/pull/85
[90]: https://github.com/taiki-e/pin-project/pull/90
[93]: https://github.com/taiki-e/pin-project/pull/93
[94]: https://github.com/taiki-e/pin-project/pull/94
[96]: https://github.com/taiki-e/pin-project/pull/96
[100]: https://github.com/taiki-e/pin-project/pull/100
- [`#[pin_project]` attribute now determines the visibility of the projection type/method is based on the original type.](https://github.com/taiki-e/pin-project/pull/96)
## [0.4.0-alpha.11] - 2019-09-11
* [Changed #[pinned_drop] to trait implementation.][86]
- [Change #[pinned_drop] to trait implementation.](https://github.com/taiki-e/pin-project/pull/86)
```rust
#[pinned_drop]
@ -143,184 +334,186 @@ Changes since the 0.4.0-beta.1 release:
}
```
* Added some examples and generated code.
- Add some examples and generated code.
* Improve error messages.
[86]: https://github.com/taiki-e/pin-project/pull/86
- Diagnostic improvements.
## [0.4.0-alpha.10] - 2019-09-07
* [`#[pin_project]` can now interoperate with `#[cfg()]`.][77]
- [`#[pin_project]` can now interoperate with `#[cfg()]`.](https://github.com/taiki-e/pin-project/pull/77)
* Improved documentation.
[77]: https://github.com/taiki-e/pin-project/pull/77
- Documentation improvements.
## [0.4.0-alpha.9] - 2019-09-05
* [Added 'project_into' method to #[pin_project] types][69]. This can be useful when returning a pin projection from a method.
- [Add `project_into` method to `#[pin_project]` types](https://github.com/taiki-e/pin-project/pull/69). This can be useful when returning a pin projection from a method.
```rust
fn get_pin_mut(self: Pin<&mut Self>) -> Pin<&mut T> {
self.project_into().pinned
}
```
* [Prevented UnpinStruct from appearing in the document by default.][71] See [taiki-e/pin-project#71][71] for more details.
[69]: https://github.com/taiki-e/pin-project/pull/69
[71]: https://github.com/taiki-e/pin-project/pull/69
- [Prevent `UnpinStruct` from appearing in the document by default.](https://github.com/taiki-e/pin-project/pull/71) See [#71](https://github.com/taiki-e/pin-project/pull/71) for more details.
## [0.4.0-alpha.8] - 2019-09-03
* [Improved document of generated code.][62]. Also added an option to control the document of generated code. See [taiki-e/pin-project#62][62] for more details.
- [Improve document of generated code.](https://github.com/taiki-e/pin-project/pull/62). Also added an option to control the document of generated code. See [#62](https://github.com/taiki-e/pin-project/pull/62) for more details.
* [Improved error messages][61]
[61]: https://github.com/taiki-e/pin-project/pull/61
[62]: https://github.com/taiki-e/pin-project/pull/62
- [Diagnostic improvements.](https://github.com/taiki-e/pin-project/pull/61)
## [0.4.0-alpha.7] - 2019-09-02
* [Applied `#[allow(dead_code)]` to generated types.][57]
[57]: https://github.com/taiki-e/pin-project/pull/57
- [Suppress `dead_code` lint in generated types.](https://github.com/taiki-e/pin-project/pull/57)
## [0.4.0-alpha.6] - 2019-09-01
* [Allowed using `#[pin_project]` type with private field types][53]
[53]: https://github.com/taiki-e/pin-project/pull/53
- [Allow using `#[pin_project]` type with private field types](https://github.com/taiki-e/pin-project/pull/53)
## [0.4.0-alpha.5] - 2019-08-24
* [`#[project]` attribute now supports `match` expressions at the position of the initializer expression of `let` expressions.][51]
[51]: https://github.com/taiki-e/pin-project/pull/51
- [`#[project]` attribute now supports `match` expressions at the position of the initializer expression of `let` expressions.](https://github.com/taiki-e/pin-project/pull/51)
## [0.4.0-alpha.4] - 2019-08-23
* Avoided clippy::drop_bounds lint in generated code.
- Suppress `clippy::drop_bounds` lint in generated code.
## [0.4.0-alpha.3] - 2019-08-23
* [Changed `project` method generated by `#[pin_project]` attribute to take an `&mut Pin<&mut Self>` argument.][47]
- [Change `project` method generated by `#[pin_project]` attribute to take an `&mut Pin<&mut Self>` argument.](https://github.com/taiki-e/pin-project/pull/47)
* [`#[project]` attribute can now be used for impl blocks.][46]
- [`#[project]` attribute can now be used for impl blocks.](https://github.com/taiki-e/pin-project/pull/46)
* [`#[pin_project]` attribute can now detect that the type used does not have its own drop implementation without actually implementing drop.][48] This removed some restrictions.
[46]: https://github.com/taiki-e/pin-project/pull/46
[47]: https://github.com/taiki-e/pin-project/pull/47
[48]: https://github.com/taiki-e/pin-project/pull/48
- [`#[pin_project]` attribute can now detect that the type used does not have its own drop implementation without actually implementing drop.](https://github.com/taiki-e/pin-project/pull/48) This removed some restrictions.
## [0.4.0-alpha.2] - 2019-08-13
* Updated `proc-macro2`, `syn`, and `quote` to 1.0.
- Update `proc-macro2`, `syn`, and `quote` to 1.0.
## [0.4.0-alpha.1] - 2019-08-11
* **Pin projection has become a safe operation.**
- **Pin projection has become a safe operation.**
* `#[unsafe_project]` has been replaced with `#[pin_project]`.
- `#[unsafe_project]` has been replaced with `#[pin_project]`.
* The `Unpin` argument has been removed - an `Unpin` impl is now generated by default.
- The `Unpin` argument has been removed - an `Unpin` impl is now generated by default.
* Drop impls must be specified with `#[pinned_drop]` instead of via a normal `Drop` impl.
- Drop impls must be specified with `#[pinned_drop]` instead of via a normal `Drop` impl.
* `Unpin` impls must be specified with an impl of `UnsafeUnpin`, instead of implementing the normal `Unpin` trait.
- `Unpin` impls must be specified with an impl of `UnsafeUnpin`, instead of implementing the normal `Unpin` trait.
* Made `#[project]` attribute disabled by default.
- Made `#[project]` attribute disabled by default.
See also [tracking issue for 0.4 release][21].
[21]: https://github.com/taiki-e/pin-project/issues/21
See also [tracking issue for 0.4 release](https://github.com/taiki-e/pin-project/issues/21).
## [0.3.5] - 2019-08-14
* Updated `proc-macro2`, `syn`, and `quote` to 1.0.
- Update `proc-macro2`, `syn`, and `quote` to 1.0.
## [0.3.4] - 2019-07-21
* Improved error messages.
- Diagnostic improvements.
## [0.3.3] - 2019-07-15 - YANKED
## [0.3.3] - 2019-07-15
* Improved error messages.
**Note: This release has been yanked.** See [#16](https://github.com/taiki-e/pin-project/issues/16) for details.
- Diagnostic improvements.
## [0.3.2] - 2019-03-30
* Avoided suffixes on tuple index.
- Avoid suffixes on tuple index.
## [0.3.1] - 2019-03-02
* Improved documentation.
- Documentation improvements.
* Updated minimum `syn` version to 0.15.22.
- Update minimum `syn` version to 0.15.22.
## [0.3.0] - 2019-02-20
* Removed `unsafe_fields` attribute.
- Remove `unsafe_fields` attribute.
* Removed `unsafe_variants` attribute.
- Remove `unsafe_variants` attribute.
## [0.2.2] - 2019-02-20
* Fixed a bug that generates incorrect code for the some structures with trait bounds on type generics.
- Fix a bug that generates incorrect code for the some structures with trait bounds on type generics.
## [0.2.1] - 2019-02-20
* Fixed a bug that generates incorrect code for the structures with where clause and associated type fields.
- Fix a bug that generates incorrect code for the structures with where clause and associated type fields.
## [0.2.0] - 2019-02-11
* Made `unsafe_fields` optional.
- Make `unsafe_fields` optional.
* Improved documentation.
- Documentation improvements.
## [0.1.8] - 2019-02-02
* Added the feature to create projected enums to `unsafe_project`.
- Add the feature to create projected enums to `unsafe_project`.
* Added `project` attribute to support pattern matching.
- Add `project` attribute to support pattern matching.
## [0.1.7] - 2019-01-19
* Fixed documentation.
- Fix documentation.
## [0.1.6] - 2019-01-19
* `unsafe_fields` can now opt-out.
- `unsafe_fields` can now opt-out.
* Added `unsafe_variants` attribute. This attribute is available if pin-project is built with the "unsafe_variants" feature.
- Add `unsafe_variants` attribute. This attribute is available if pin-project is built with the "unsafe_variants" feature.
## [0.1.5] - 2019-01-17
* Added support for tuple struct to `unsafe_project`.
- Add support for tuple struct to `unsafe_project`.
## [0.1.4] - 2019-01-12
* Added options for automatically implementing `Unpin` to both `unsafe_project` and `unsafe_fields`.
- Add options for automatically implementing `Unpin` to both `unsafe_project` and `unsafe_fields`.
## [0.1.3] - 2019-01-11
* Fixed dependencies.
- Fix dependencies.
* Added `unsafe_fields` attribute.
- Add `unsafe_fields` attribute.
## [0.1.2] - 2019-01-09
* Improved documentation.
- Documentation improvements.
## [0.1.1] - 2019-01-08
* Renamed from `unsafe_pin_project` to `unsafe_project`.
- Rename from `unsafe_pin_project` to `unsafe_project`.
## [0.1.0] - 2019-01-08 - YANKED
## [0.1.0] - 2019-01-08
**Note: This release has been yanked.**
Initial release
[Unreleased]: https://github.com/taiki-e/pin-project/compare/v0.4.9...HEAD
[Unreleased]: https://github.com/taiki-e/pin-project/compare/v0.4.28...HEAD
[0.4.28]: https://github.com/taiki-e/pin-project/compare/v0.4.27...v0.4.28
[0.4.27]: https://github.com/taiki-e/pin-project/compare/v0.4.26...v0.4.27
[0.4.26]: https://github.com/taiki-e/pin-project/compare/v0.4.25...v0.4.26
[0.4.25]: https://github.com/taiki-e/pin-project/compare/v0.4.24...v0.4.25
[0.4.24]: https://github.com/taiki-e/pin-project/compare/v0.4.23...v0.4.24
[0.4.23]: https://github.com/taiki-e/pin-project/compare/v0.4.22...v0.4.23
[0.4.22]: https://github.com/taiki-e/pin-project/compare/v0.4.21...v0.4.22
[0.4.21]: https://github.com/taiki-e/pin-project/compare/v0.4.20...v0.4.21
[0.4.20]: https://github.com/taiki-e/pin-project/compare/v0.4.19...v0.4.20
[0.4.19]: https://github.com/taiki-e/pin-project/compare/v0.4.18...v0.4.19
[0.4.18]: https://github.com/taiki-e/pin-project/compare/v0.4.17...v0.4.18
[0.4.17]: https://github.com/taiki-e/pin-project/compare/v0.4.16...v0.4.17
[0.4.16]: https://github.com/taiki-e/pin-project/compare/v0.4.15...v0.4.16
[0.4.15]: https://github.com/taiki-e/pin-project/compare/v0.4.14...v0.4.15
[0.4.14]: https://github.com/taiki-e/pin-project/compare/v0.4.13...v0.4.14
[0.4.13]: https://github.com/taiki-e/pin-project/compare/v0.4.11...v0.4.13
[0.4.12]: https://github.com/taiki-e/pin-project/compare/v0.4.10...v0.4.12
[0.4.11]: https://github.com/taiki-e/pin-project/compare/v0.4.10...v0.4.11
[0.4.10]: https://github.com/taiki-e/pin-project/compare/v0.4.9...v0.4.10
[0.4.9]: https://github.com/taiki-e/pin-project/compare/v0.4.8...v0.4.9
[0.4.8]: https://github.com/taiki-e/pin-project/compare/v0.4.7...v0.4.8
[0.4.7]: https://github.com/taiki-e/pin-project/compare/v0.4.6...v0.4.7

166
third_party/rust/pin-project/Cargo.lock generated vendored
View File

@ -1,56 +1,180 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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[[package]]
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version = "0.4.28"
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"pin-project-internal 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
"pin-project-internal",
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version = "0.4.9"
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"unicode-xid",
]
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dependencies = [
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name = "toml"
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14
third_party/rust/pin-project/Cargo.toml vendored
View File

@ -13,16 +13,22 @@
[package]
edition = "2018"
name = "pin-project"
version = "0.4.9"
version = "0.4.28"
authors = ["Taiki Endo <te316e89@gmail.com>"]
exclude = ["/.*", "/ci", "/tools"]
description = "A crate for safe and ergonomic pin-projection.\n"
homepage = "https://github.com/taiki-e/pin-project"
documentation = "https://docs.rs/pin-project"
readme = "README.md"
keywords = ["pin", "macros", "attribute"]
categories = ["no-std", "rust-patterns"]
license = "Apache-2.0 OR MIT"
repository = "https://github.com/taiki-e/pin-project"
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
[dependencies.pin-project-internal]
version = "=0.4.9"
version = "=0.4.28"
default-features = false
[dev-dependencies.rustversion]
version = "1.0"
[dev-dependencies.trybuild]
version = "1.0"

35
third_party/rust/pin-project/README.md vendored
View File

@ -9,16 +9,12 @@
[crates-url]: https://crates.io/crates/pin-project
[docs-badge]: https://docs.rs/pin-project/badge.svg
[docs-url]: https://docs.rs/pin-project
[license-badge]: https://img.shields.io/crates/l/pin-project.svg
[license-badge]: https://img.shields.io/badge/license-Apache--2.0%20OR%20MIT-blue.svg
[license]: #license
[rustc-badge]: https://img.shields.io/badge/rustc-1.33+-lightgray.svg
[rustc-url]: https://blog.rust-lang.org/2019/02/28/Rust-1.33.0.html
[rustc-badge]: https://img.shields.io/badge/rustc-1.34+-lightgray.svg
[rustc-url]: https://blog.rust-lang.org/2019/04/11/Rust-1.34.0.html
A crate for safe and ergonomic pin-projection.
[Documentation][docs-url]
[Examples](examples/README.md)
A crate for safe and ergonomic [pin-projection].
## Usage
@ -29,11 +25,12 @@ Add this to your `Cargo.toml`:
pin-project = "0.4"
```
The current pin-project requires Rust 1.33 or later.
The current pin-project requires Rust 1.34 or later.
## Examples
[`pin_project`] attribute creates a projection struct covering all the fields.
[`#[pin_project]`][`pin_project`] attribute creates projection types
covering all the fields of struct or enum.
```rust
use pin_project::pin_project;
@ -47,7 +44,7 @@ struct Struct<T, U> {
}
impl<T, U> Struct<T, U> {
fn foo(self: Pin<&mut Self>) {
fn method(self: Pin<&mut Self>) {
let this = self.project();
let _: Pin<&mut T> = this.pinned; // Pinned reference to the field
let _: &mut U = this.unpinned; // Normal reference to the field
@ -55,13 +52,21 @@ impl<T, U> Struct<T, U> {
}
```
[Code like this will be generated](examples/struct-default-expanded.rs)
[*code like this will be generated*][struct-default-expanded]
See [API documentation][docs-url] for more details.
Also, there are examples and generated code of each feature in [examples](examples/README.md) directory.
See [documentation][docs-url] for more details, and
see [examples] directory for more examples and generated code.
[`pin_project`]: https://docs.rs/pin-project/0.4/pin_project/attr.pin_project.html
[examples]: examples/README.md
[pin-projection]: https://doc.rust-lang.org/nightly/std/pin/index.html#projections-and-structural-pinning
[struct-default-expanded]: examples/struct-default-expanded.rs
## Related Projects
* [pin-project-lite]: A lightweight version of pin-project written with declarative macros.
[pin-project-lite]: https://github.com/taiki-e/pin-project-lite
## License

24
third_party/rust/pin-project/ci.sh vendored
View File

@ -1,24 +0,0 @@
#!/bin/bash
# A script to run a simplified version of the checks done by CI.
#
# Usage
#
# ```sh
# . ./ci.sh
# ```
echo "Running 'cargo fmt -- --check'"
cargo +nightly fmt --all -- --check
echo "Running 'cargo clippy'"
cargo +nightly clippy --all --all-features
echo "Running 'cargo test'"
cargo +nightly test --all --all-features
echo "Running 'cargo doc'"
cargo +nightly doc --no-deps --all --all-features
echo "Running 'compiletest'"
. ./compiletest.sh

29
third_party/rust/pin-project/ci/install-component.sh vendored
View File

@ -1,29 +0,0 @@
#!/bin/bash
set -euo pipefail
component="${1}"
if ! rustup component add "${component}" 2>/dev/null; then
# If the component is unavailable on the latest nightly,
# use the latest toolchain with the component available.
# Refs: https://github.com/rust-lang/rustup-components-history#the-web-part
target=$(curl -sSf "https://rust-lang.github.io/rustup-components-history/x86_64-unknown-linux-gnu/${component}")
echo "'${component}' is unavailable on the default toolchain, use the toolchain 'nightly-${target}' instead"
rustup update "nightly-${target}" --no-self-update
rustup default "nightly-${target}"
echo "Query rust and cargo versions:"
rustup -V
rustc -V
cargo -V
rustup component add "${component}"
fi
echo "Query component versions:"
case "${component}" in
clippy | miri) cargo "${component}" -V ;;
rustfmt) "${component}" -V ;;
esac

20
third_party/rust/pin-project/ci/install-rust.sh vendored
View File

@ -1,20 +0,0 @@
#!/bin/bash
set -euo pipefail
toolchain="${1:-nightly}"
if rustup -V 2>/dev/null; then
rustup set profile minimal
rustup update "${toolchain}" --no-self-update
rustup default "${toolchain}"
else
curl -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain "${toolchain}"
export PATH=${PATH}:${HOME}/.cargo/bin
echo "##[add-path]${HOME}/.cargo/bin"
fi
echo "Query rust and cargo versions:"
rustup -V
rustc -V
cargo -V

12
third_party/rust/pin-project/compiletest.sh vendored
View File

@ -1,12 +0,0 @@
#!/bin/bash
# A script to run compile tests with the same condition of the checks done by CI.
#
# Usage
#
# ```sh
# . ./compiletest.sh
# ```
TRYBUILD=overwrite RUSTFLAGS='--cfg pin_project_show_unpin_struct' cargo +nightly test -p pin-project --all-features --test compiletest -- --ignored
# RUSTFLAGS='--cfg pin_project_show_unpin_struct' cargo +nightly test -p pin-project --all-features --test compiletest -- --ignored

36
third_party/rust/pin-project/examples/README.md vendored
View File

@ -1,9 +1,35 @@
## Examples and generated code of each feature of pin-project
# Examples and generated code of each feature of pin-project
* [Basic usage of `#[pin_project]` on structs.](struct-default.rs) -- [generated code](struct-default-expanded.rs)
### Basic usage of `#[pin_project]` on structs
* [Basic usage of `#[pin_project]` on enums.](enum-default.rs) -- [generated code](enum-default-expanded.rs)
* [example](struct-default.rs)
* [generated code](struct-default-expanded.rs)
* [Manual implementation of `Unpin` by `UnsafeUnpin`.](unsafe_unpin.rs) -- [generated code](unsafe_unpin-expanded.rs)
### Basic usage of `#[pin_project]` on enums
* [Manual implementation of `Drop` by `#[pinned_drop]`.](pinned_drop.rs) -- [generated code](pinned_drop-expanded.rs)
* [example](enum-default.rs)
* [generated code](enum-default-expanded.rs)
### Manual implementation of `Unpin` by `UnsafeUnpin`
* [example](unsafe_unpin.rs)
* [generated code](unsafe_unpin-expanded.rs)
* [`UnsafeUnpin` documentation](https://docs.rs/pin-project/0.4/pin_project/trait.UnsafeUnpin.html)
### Manual implementation of `Drop` by `#[pinned_drop]`
* [example](pinned_drop.rs)
* [generated code](pinned_drop-expanded.rs)
* [`#[pinned_drop]` documentation](https://docs.rs/pin-project/0.4/pin_project/attr.pinned_drop.html)
### `project_replace()` method
* [example](project_replace.rs)
* [generated code](project_replace-expanded.rs)
* [`project_replace()` documentation](https://docs.rs/pin-project/0.4/pin_project/attr.pin_project.html#project_replace)
### Ensure `!Unpin` by `#[pin_project(!Unpin)]`
* [example](not_unpin.rs)
* [generated code](not_unpin-expanded.rs)
* [`!Unpin` documentation](https://docs.rs/pin-project/0.4/pin_project/attr.pin_project.html#unpin)

120
third_party/rust/pin-project/examples/enum-default-expanded.rs vendored
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@ -5,7 +5,7 @@
//
// use pin_project::pin_project;
//
// #[pin_project]
// #[pin_project(project = EnumProj)]
// enum Enum<T, U> {
// Pinned(#[pin] T),
// Unpinned(U),
@ -14,7 +14,8 @@
// fn main() {}
// ```
#![allow(dead_code, unused_imports, unused_parens)]
#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
#![allow(clippy::needless_lifetimes, clippy::just_underscores_and_digits)]
use pin_project::pin_project;
@ -23,64 +24,91 @@ enum Enum<T, U> {
Unpinned(U),
}
#[allow(clippy::mut_mut)] // This lint warns `&mut &mut <ty>`.
#[allow(dead_code)] // This lint warns unused fields/variants.
enum __EnumProjection<'pin, T, U> {
Pinned(::core::pin::Pin<&'pin mut (T)>),
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::mut_mut)]
#[allow(clippy::type_repetition_in_bounds)]
enum EnumProj<'pin, T, U>
where
Enum<T, U>: 'pin,
{
Pinned(::pin_project::__private::Pin<&'pin mut (T)>),
Unpinned(&'pin mut (U)),
}
#[allow(dead_code)] // This lint warns unused fields/variants.
enum __EnumProjectionRef<'pin, T, U> {
Pinned(::core::pin::Pin<&'pin (T)>),
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::type_repetition_in_bounds)]
enum __EnumProjectionRef<'pin, T, U>
where
Enum<T, U>: 'pin,
{
Pinned(::pin_project::__private::Pin<&'pin (T)>),
Unpinned(&'pin (U)),
}
impl<T, U> Enum<T, U> {
fn project<'pin>(self: ::core::pin::Pin<&'pin mut Self>) -> __EnumProjection<'pin, T, U> {
unsafe {
match self.get_unchecked_mut() {
Enum::Pinned(_0) => __EnumProjection::Pinned(::core::pin::Pin::new_unchecked(_0)),
Enum::Unpinned(_0) => __EnumProjection::Unpinned(_0),
}
}
}
fn project_ref<'pin>(self: ::core::pin::Pin<&'pin Self>) -> __EnumProjectionRef<'pin, T, U> {
unsafe {
match self.get_ref() {
Enum::Pinned(_0) => {
__EnumProjectionRef::Pinned(::core::pin::Pin::new_unchecked(_0))
#[doc(hidden)]
#[allow(non_upper_case_globals)]
#[allow(single_use_lifetimes)]
#[allow(clippy::used_underscore_binding)]
const _: () = {
impl<T, U> Enum<T, U> {
fn project<'pin>(
self: ::pin_project::__private::Pin<&'pin mut Self>,
) -> EnumProj<'pin, T, U> {
unsafe {
match self.get_unchecked_mut() {
Enum::Pinned(_0) => {
EnumProj::Pinned(::pin_project::__private::Pin::new_unchecked(_0))
}
Enum::Unpinned(_0) => EnumProj::Unpinned(_0),
}
}
}
fn project_ref<'pin>(
self: ::pin_project::__private::Pin<&'pin Self>,
) -> __EnumProjectionRef<'pin, T, U> {
unsafe {
match self.get_ref() {
Enum::Pinned(_0) => __EnumProjectionRef::Pinned(
::pin_project::__private::Pin::new_unchecked(_0),
),
Enum::Unpinned(_0) => __EnumProjectionRef::Unpinned(_0),
}
Enum::Unpinned(_0) => __EnumProjectionRef::Unpinned(_0),
}
}
}
}
// Automatically create the appropriate conditional `Unpin` implementation.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/53.
// for details.
#[allow(non_snake_case)]
fn __unpin_scope_Enum() {
// Automatically create the appropriate conditional `Unpin` implementation.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/53.
// for details.
struct __Enum<'pin, T, U> {
__pin_project_use_generics: ::pin_project::__private::AlwaysUnpin<'pin, (T, U)>,
__pin_project_use_generics: ::pin_project::__private::AlwaysUnpin<
'pin,
(::pin_project::__private::PhantomData<T>, ::pin_project::__private::PhantomData<U>),
>,
__field0: T,
}
impl<'pin, T, U> ::core::marker::Unpin for Enum<T, U> where __Enum<'pin, T, U>: ::core::marker::Unpin
{}
}
impl<'pin, T, U> ::pin_project::__private::Unpin for Enum<T, U> where
__Enum<'pin, T, U>: ::pin_project::__private::Unpin
{
}
unsafe impl<T, U> ::pin_project::UnsafeUnpin for Enum<T, U> {}
// Ensure that enum does not implement `Drop`.
//
// See ./struct-default-expanded.rs for details.
trait EnumMustNotImplDrop {}
#[allow(clippy::drop_bounds)]
impl<T: ::core::ops::Drop> EnumMustNotImplDrop for T {}
#[allow(single_use_lifetimes)]
impl<T, U> EnumMustNotImplDrop for Enum<T, U> {}
// Ensure that enum does not implement `Drop`.
//
// See ./struct-default-expanded.rs for details.
trait EnumMustNotImplDrop {}
#[allow(clippy::drop_bounds, drop_bounds)]
impl<T: ::pin_project::__private::Drop> EnumMustNotImplDrop for T {}
impl<T, U> EnumMustNotImplDrop for Enum<T, U> {}
impl<T, U> ::pin_project::__private::PinnedDrop for Enum<T, U> {
unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
// We don't need to check for '#[repr(packed)]',
// since it does not apply to enums.
// We don't need to check for `#[repr(packed)]`,
// since it does not apply to enums.
};
fn main() {}

2
third_party/rust/pin-project/examples/enum-default.rs vendored
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@ -4,7 +4,7 @@
use pin_project::pin_project;
#[pin_project]
#[pin_project(project = EnumProj)]
enum Enum<T, U> {
Pinned(#[pin] T),
Unpinned(U),

129
third_party/rust/pin-project/examples/not_unpin-expanded.rs vendored Normal file
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@ -0,0 +1,129 @@
// Original code (./not_unpin.rs):
//
// ```rust
// #![allow(dead_code)]
//
// use pin_project::pin_project;
//
// #[pin_project(!Unpin)]
// pub struct Struct<T, U> {
// #[pin]
// pinned: T,
// unpinned: U,
// }
//
// fn main() {
// fn _is_unpin<T: Unpin>() {}
// // _is_unpin::<Struct<(), ()>>(); //~ ERROR `std::marker::PhantomPinned` cannot be unpinned
// }
// ```
#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
#![allow(clippy::no_effect, clippy::needless_lifetimes)]
use pin_project::pin_project;
pub struct Struct<T, U> {
// #[pin]
pinned: T,
unpinned: U,
}
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::mut_mut)]
#[allow(clippy::type_repetition_in_bounds)]
pub(crate) struct __StructProjection<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
unpinned: &'pin mut (U),
}
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::type_repetition_in_bounds)]
pub(crate) struct __StructProjectionRef<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin (T)>,
unpinned: &'pin (U),
}
#[doc(hidden)]
#[allow(non_upper_case_globals)]
#[allow(single_use_lifetimes)]
#[allow(clippy::used_underscore_binding)]
const _: () = {
impl<T, U> Struct<T, U> {
pub(crate) fn project<'pin>(
self: ::pin_project::__private::Pin<&'pin mut Self>,
) -> __StructProjection<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_unchecked_mut();
__StructProjection {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
pub(crate) fn project_ref<'pin>(
self: ::pin_project::__private::Pin<&'pin Self>,
) -> __StructProjectionRef<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_ref();
__StructProjectionRef {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
}
// Create `Unpin` impl that has trivial `Unpin` bounds.
//
// See https://github.com/taiki-e/pin-project/issues/102#issuecomment-540472282
// for details.
impl<'pin, T, U> ::pin_project::__private::Unpin for Struct<T, U> where
::pin_project::__private::Wrapper<'pin, ::pin_project::__private::PhantomPinned>:
::pin_project::__private::Unpin
{
}
// A dummy impl of `UnsafeUnpin`, to ensure that the user cannot implement it.
//
// To ensure that users don't accidentally write a non-functional `UnsafeUnpin`
// impls, we emit one ourselves. If the user ends up writing an `UnsafeUnpin`
// impl, they'll get a "conflicting implementations of trait" error when
// coherence checks are run.
unsafe impl<T, U> ::pin_project::UnsafeUnpin for Struct<T, U> {}
// Ensure that struct does not implement `Drop`.
//
// See ./struct-default-expanded.rs for details.
trait StructMustNotImplDrop {}
#[allow(clippy::drop_bounds, drop_bounds)]
impl<T: ::pin_project::__private::Drop> StructMustNotImplDrop for T {}
impl<T, U> StructMustNotImplDrop for Struct<T, U> {}
impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
// Ensure that it's impossible to use pin projections on a #[repr(packed)]
// struct.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/34
// for details.
#[forbid(unaligned_references, safe_packed_borrows)]
fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
let _ = &this.pinned;
let _ = &this.unpinned;
}
};
fn main() {
fn _is_unpin<T: Unpin>() {}
// _is_unpin::<Struct<(), ()>>(); //~ ERROR `std::marker::PhantomPinned` cannot be unpinned
}

17
third_party/rust/pin-project/examples/not_unpin.rs vendored Normal file
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@ -0,0 +1,17 @@
// See ./not_unpin-expanded.rs for generated code.
#![allow(dead_code)]
use pin_project::pin_project;
#[pin_project(!Unpin)]
pub struct Struct<T, U> {
#[pin]
pinned: T,
unpinned: U,
}
fn main() {
fn _is_unpin<T: Unpin>() {}
// _is_unpin::<Struct<(), ()>>(); //~ ERROR `std::marker::PhantomPinned` cannot be unpinned
}

205
third_party/rust/pin-project/examples/pinned_drop-expanded.rs vendored
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@ -3,131 +3,158 @@
// ```rust
// #![allow(dead_code)]
//
// use pin_project::{pin_project, pinned_drop};
// use std::pin::Pin;
//
// use pin_project::{pin_project, pinned_drop};
//
// #[pin_project(PinnedDrop)]
// pub struct Foo<'a, T> {
// pub struct Struct<'a, T> {
// was_dropped: &'a mut bool,
// #[pin]
// field: T,
// }
//
// #[pinned_drop]
// fn drop_foo<T>(mut this: Pin<&mut Foo<'_, T>>) {
// fn drop_Struct<T>(mut this: Pin<&mut Struct<'_, T>>) {
// **this.project().was_dropped = true;
// }
//
// fn main() {}
// ```
#![allow(dead_code, unused_imports, unused_parens)]
#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
#![allow(clippy::no_effect, clippy::needless_lifetimes)]
use pin_project::{pin_project, pinned_drop};
use std::pin::Pin;
pub struct Foo<'a, T> {
use pin_project::{pin_project, pinned_drop};
pub struct Struct<'a, T> {
was_dropped: &'a mut bool,
// #[pin]
field: T,
}
#[allow(clippy::mut_mut)] // This lint warns `&mut &mut <ty>`.
#[allow(dead_code)] // This lint warns unused fields/variants.
pub(crate) struct __FooProjection<'pin, 'a, T> {
was_dropped: &'pin mut (&'a mut bool),
field: ::core::pin::Pin<&'pin mut (T)>,
}
#[allow(dead_code)] // This lint warns unused fields/variants.
pub(crate) struct __FooProjectionRef<'pin, 'a, T> {
was_dropped: &'pin (&'a mut bool),
field: ::core::pin::Pin<&'pin (T)>,
}
impl<'a, T> Foo<'a, T> {
pub(crate) fn project<'pin>(
self: ::core::pin::Pin<&'pin mut Self>,
) -> __FooProjection<'pin, 'a, T> {
unsafe {
let Foo { was_dropped, field } = self.get_unchecked_mut();
__FooProjection { was_dropped, field: ::core::pin::Pin::new_unchecked(field) }
}
}
pub(crate) fn project_ref<'pin>(
self: ::core::pin::Pin<&'pin Self>,
) -> __FooProjectionRef<'pin, 'a, T> {
unsafe {
let Foo { was_dropped, field } = self.get_ref();
__FooProjectionRef { was_dropped, field: ::core::pin::Pin::new_unchecked(field) }
}
}
}
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
impl<'a, T> ::core::ops::Drop for Foo<'a, T> {
fn drop(&mut self) {
// Safety - we're in 'drop', so we know that 'self' will
// never move again.
let pinned_self = unsafe { ::core::pin::Pin::new_unchecked(self) };
// We call `pinned_drop` only once. Since `PinnedDrop::drop`
// is an unsafe function and a private API, it is never called again in safe
// code *unless the user uses a maliciously crafted macro*.
unsafe {
::pin_project::__private::PinnedDrop::drop(pinned_self);
}
}
#[allow(clippy::mut_mut)]
#[allow(clippy::type_repetition_in_bounds)]
pub(crate) struct __StructProjection<'pin, 'a, T>
where
Struct<'a, T>: 'pin,
{
was_dropped: &'pin mut (&'a mut bool),
field: ::pin_project::__private::Pin<&'pin mut (T)>,
}
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::type_repetition_in_bounds)]
pub(crate) struct __StructProjectionRef<'pin, 'a, T>
where
Struct<'a, T>: 'pin,
{
was_dropped: &'pin (&'a mut bool),
field: ::pin_project::__private::Pin<&'pin (T)>,
}
// It is safe to implement PinnedDrop::drop, but it is not safe to call it.
// This is because destructors can be called multiple times (double dropping
// is unsound: rust-lang/rust#62360).
#[doc(hidden)]
#[allow(non_upper_case_globals)]
#[allow(single_use_lifetimes)]
#[allow(clippy::used_underscore_binding)]
const _: () = {
impl<'a, T> Struct<'a, T> {
pub(crate) fn project<'pin>(
self: ::pin_project::__private::Pin<&'pin mut Self>,
) -> __StructProjection<'pin, 'a, T> {
unsafe {
let Self { was_dropped, field } = self.get_unchecked_mut();
__StructProjection {
was_dropped,
field: ::pin_project::__private::Pin::new_unchecked(field),
}
}
}
pub(crate) fn project_ref<'pin>(
self: ::pin_project::__private::Pin<&'pin Self>,
) -> __StructProjectionRef<'pin, 'a, T> {
unsafe {
let Self { was_dropped, field } = self.get_ref();
__StructProjectionRef {
was_dropped,
field: ::pin_project::__private::Pin::new_unchecked(field),
}
}
}
}
impl<'a, T> ::pin_project::__private::Drop for Struct<'a, T> {
fn drop(&mut self) {
// Safety - we're in 'drop', so we know that 'self' will
// never move again.
let pinned_self = unsafe { ::pin_project::__private::Pin::new_unchecked(self) };
// We call `pinned_drop` only once. Since `PinnedDrop::drop`
// is an unsafe method and a private API, it is never called again in safe
// code *unless the user uses a maliciously crafted macro*.
unsafe {
::pin_project::__private::PinnedDrop::drop(pinned_self);
}
}
}
// Automatically create the appropriate conditional `Unpin` implementation.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/53.
// for details.
pub struct __Struct<'pin, 'a, T> {
__pin_project_use_generics: ::pin_project::__private::AlwaysUnpin<'pin, (T)>,
__field0: T,
__lifetime0: &'a (),
}
impl<'pin, 'a, T> ::pin_project::__private::Unpin for Struct<'a, T> where
__Struct<'pin, 'a, T>: ::pin_project::__private::Unpin
{
}
unsafe impl<'a, T> ::pin_project::UnsafeUnpin for Struct<'a, T> {}
// Ensure that it's impossible to use pin projections on a #[repr(packed)]
// struct.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/34
// for details.
#[forbid(unaligned_references, safe_packed_borrows)]
fn __assert_not_repr_packed<'a, T>(this: &Struct<'a, T>) {
let _ = &this.was_dropped;
let _ = &this.field;
}
};
// Implementing `PinnedDrop::drop` is safe, but calling it is not safe.
// This is because destructors can be called multiple times in safe code and
// [double dropping is unsound](https://github.com/rust-lang/rust/pull/62360).
//
// Ideally, it would be desirable to be able to prohibit manual calls in the
// same way as Drop::drop, but the library cannot. So, by using macros and
// replacing them with private traits, we prevent users from calling
// PinnedDrop::drop.
// Ideally, it would be desirable to be able to forbid manual calls in
// the same way as `Drop::drop`, but the library cannot do it. So, by using
// macros and replacing them with private traits, we prevent users from
// calling `PinnedDrop::drop`.
//
// Users can implement `Drop` safely using `#[pinned_drop]`.
// Users can implement [`Drop`] safely using `#[pinned_drop]` and can drop a
// type that implements `PinnedDrop` using the [`drop`] function safely.
// **Do not call or implement this trait directly.**
impl<T> ::pin_project::__private::PinnedDrop for Foo<'_, T> {
impl<T> ::pin_project::__private::PinnedDrop for Struct<'_, T> {
// Since calling it twice on the same object would be UB,
// this method is unsafe.
unsafe fn drop(self: Pin<&mut Self>) {
fn __drop_inner<T>(__self: Pin<&mut Foo<'_, T>>) {
#[allow(clippy::needless_pass_by_value)]
fn __drop_inner<T>(__self: Pin<&mut Struct<'_, T>>) {
// A dummy `__drop_inner` function to prevent users call outer `__drop_inner`.
fn __drop_inner() {}
**__self.project().was_dropped = true;
}
__drop_inner(self);
}
}
// Automatically create the appropriate conditional `Unpin` implementation.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/53.
// for details.
#[allow(non_snake_case)]
fn __unpin_scope_Foo() {
pub struct __Foo<'pin, 'a, T> {
__pin_project_use_generics: ::pin_project::__private::AlwaysUnpin<'pin, (T)>,
__field0: T,
__lifetime0: &'a (),
}
impl<'pin, 'a, T> ::core::marker::Unpin for Foo<'a, T> where
__Foo<'pin, 'a, T>: ::core::marker::Unpin
{
}
}
// Ensure that it's impossible to use pin projections on a #[repr(packed)] struct.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/34
// for details.
#[allow(single_use_lifetimes)]
#[allow(non_snake_case)]
#[deny(safe_packed_borrows)]
fn __pin_project_assert_not_repr_packed_Foo<'a, T>(val: &Foo<'a, T>) {
&val.was_dropped;
&val.field;
}
fn main() {}

7
third_party/rust/pin-project/examples/pinned_drop.rs vendored
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@ -2,18 +2,19 @@
#![allow(dead_code)]
use pin_project::{pin_project, pinned_drop};
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
#[pin_project(PinnedDrop)]
pub struct Foo<'a, T> {
pub struct Struct<'a, T> {
was_dropped: &'a mut bool,
#[pin]
field: T,
}
#[pinned_drop]
impl<T> PinnedDrop for Foo<'_, T> {
impl<T> PinnedDrop for Struct<'_, T> {
fn drop(self: Pin<&mut Self>) {
**self.project().was_dropped = true;
}

165
third_party/rust/pin-project/examples/project_replace-expanded.rs vendored Normal file
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@ -0,0 +1,165 @@
// Original code (./struct-default.rs):
//
// ```rust
// #![allow(dead_code)]
//
// use pin_project::pin_project;
//
// #[pin_project(project_replace)]
// struct Struct<T, U> {
// #[pin]
// pinned: T,
// unpinned: U,
// }
//
// fn main() {}
// ```
#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
#![allow(clippy::no_effect, clippy::needless_lifetimes)]
use pin_project::pin_project;
struct Struct<T, U> {
// #[pin]
pinned: T,
unpinned: U,
}
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::mut_mut)]
#[allow(clippy::type_repetition_in_bounds)]
struct __StructProjection<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
unpinned: &'pin mut (U),
}
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::type_repetition_in_bounds)]
struct __StructProjectionRef<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin (T)>,
unpinned: &'pin (U),
}
#[doc(hidden)]
#[allow(dead_code)]
#[allow(unreachable_pub)]
#[allow(single_use_lifetimes)]
struct __StructProjectionOwned<T, U> {
pinned: ::pin_project::__private::PhantomData<T>,
unpinned: U,
}
#[doc(hidden)]
#[allow(non_upper_case_globals)]
#[allow(single_use_lifetimes)]
#[allow(clippy::used_underscore_binding)]
const _: () = {
impl<T, U> Struct<T, U> {
fn project<'pin>(
self: ::pin_project::__private::Pin<&'pin mut Self>,
) -> __StructProjection<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_unchecked_mut();
__StructProjection {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
fn project_ref<'pin>(
self: ::pin_project::__private::Pin<&'pin Self>,
) -> __StructProjectionRef<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_ref();
__StructProjectionRef {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
fn project_replace(
self: ::pin_project::__private::Pin<&mut Self>,
__replacement: Self,
) -> __StructProjectionOwned<T, U> {
unsafe {
let __self_ptr: *mut Self = self.get_unchecked_mut();
let Self { pinned, unpinned } = &mut *__self_ptr;
// First, extract all the unpinned fields
let __result = __StructProjectionOwned {
pinned: ::pin_project::__private::PhantomData,
unpinned: ::pin_project::__private::ptr::read(unpinned),
};
// Destructors will run in reverse order, so next create a guard to overwrite
// `self` with the replacement value without calling destructors.
let __guard = ::pin_project::__private::UnsafeOverwriteGuard {
target: __self_ptr,
value: ::pin_project::__private::ManuallyDrop::new(__replacement),
};
// Now create guards to drop all the pinned fields
//
// Due to a compiler bug (https://github.com/rust-lang/rust/issues/47949)
// this must be in its own scope, or else `__result` will not be dropped
// if any of the destructors panic.
{
let __guard = ::pin_project::__private::UnsafeDropInPlaceGuard(pinned);
}
// Finally, return the result
__result
}
}
}
// Automatically create the appropriate conditional `Unpin` implementation.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/53.
// for details.
struct __Struct<'pin, T, U> {
__pin_project_use_generics: ::pin_project::__private::AlwaysUnpin<
'pin,
(::pin_project::__private::PhantomData<T>, ::pin_project::__private::PhantomData<U>),
>,
__field0: T,
}
impl<'pin, T, U> ::pin_project::__private::Unpin for Struct<T, U> where
__Struct<'pin, T, U>: ::pin_project::__private::Unpin
{
}
unsafe impl<T, U> ::pin_project::UnsafeUnpin for Struct<T, U> {}
// Ensure that struct does not implement `Drop`.
//
// See ./struct-default-expanded.rs for details.
trait StructMustNotImplDrop {}
#[allow(clippy::drop_bounds, drop_bounds)]
impl<T: ::pin_project::__private::Drop> StructMustNotImplDrop for T {}
impl<T, U> StructMustNotImplDrop for Struct<T, U> {}
impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
// Ensure that it's impossible to use pin projections on a #[repr(packed)]
// struct.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/34
// for details.
#[forbid(unaligned_references, safe_packed_borrows)]
fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
let _ = &this.pinned;
let _ = &this.unpinned;
}
};
fn main() {}

14
third_party/rust/pin-project/examples/project_replace.rs vendored Normal file
View File

@ -0,0 +1,14 @@
// See ./struct-default-expanded.rs for generated code.
#![allow(dead_code)]
use pin_project::pin_project;
#[pin_project(project_replace)]
struct Struct<T, U> {
#[pin]
pinned: T,
unpinned: U,
}
fn main() {}

204
third_party/rust/pin-project/examples/struct-default-expanded.rs vendored
View File

@ -15,7 +15,8 @@
// fn main() {}
// ```
#![allow(dead_code, unused_imports, unused_parens)]
#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
#![allow(clippy::no_effect, clippy::needless_lifetimes)]
use pin_project::pin_project;
@ -25,104 +26,137 @@ struct Struct<T, U> {
unpinned: U,
}
#[allow(clippy::mut_mut)] // This lint warns `&mut &mut <ty>`.
#[allow(dead_code)] // This lint warns unused fields/variants.
struct __StructProjection<'pin, T, U> {
pinned: ::core::pin::Pin<&'pin mut (T)>,
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::mut_mut)]
#[allow(clippy::type_repetition_in_bounds)]
struct __StructProjection<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
unpinned: &'pin mut (U),
}
#[allow(dead_code)] // This lint warns unused fields/variants.
struct __StructProjectionRef<'pin, T, U> {
pinned: ::core::pin::Pin<&'pin (T)>,
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::type_repetition_in_bounds)]
struct __StructProjectionRef<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin (T)>,
unpinned: &'pin (U),
}
impl<T, U> Struct<T, U> {
fn project<'pin>(self: ::core::pin::Pin<&'pin mut Self>) -> __StructProjection<'pin, T, U> {
unsafe {
let Struct { pinned, unpinned } = self.get_unchecked_mut();
__StructProjection { pinned: ::core::pin::Pin::new_unchecked(pinned), unpinned }
#[doc(hidden)]
#[allow(non_upper_case_globals)]
#[allow(single_use_lifetimes)]
#[allow(clippy::used_underscore_binding)]
const _: () = {
impl<T, U> Struct<T, U> {
fn project<'pin>(
self: ::pin_project::__private::Pin<&'pin mut Self>,
) -> __StructProjection<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_unchecked_mut();
__StructProjection {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
fn project_ref<'pin>(
self: ::pin_project::__private::Pin<&'pin Self>,
) -> __StructProjectionRef<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_ref();
__StructProjectionRef {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
}
fn project_ref<'pin>(self: ::core::pin::Pin<&'pin Self>) -> __StructProjectionRef<'pin, T, U> {
unsafe {
let Struct { pinned, unpinned } = self.get_ref();
__StructProjectionRef { pinned: ::core::pin::Pin::new_unchecked(pinned), unpinned }
}
}
}
// Automatically create the appropriate conditional `Unpin` implementation.
//
// Basically this is equivalent to the following code:
// ```rust
// impl<T, U> Unpin for Struct<T, U> where T: Unpin {}
// ```
//
// However, if struct is public and there is a private type field,
// this would cause an E0446 (private type in public interface).
//
// When RFC 2145 is implemented (rust-lang/rust#48054),
// this will become a lint, rather then a hard error.
//
// As a workaround for this, we generate a new struct, containing all of the pinned
// fields from our #[pin_project] type. This struct is declared within
// a function, which makes it impossible to be named by user code.
// This guarantees that it will use the default auto-trait impl for Unpin -
// that is, it will implement Unpin iff all of its fields implement Unpin.
// This type can be safely declared as 'public', satisfying the privacy
// checker without actually allowing user code to access it.
//
// This allows users to apply the #[pin_project] attribute to types
// regardless of the privacy of the types of their fields.
//
// See also https://github.com/taiki-e/pin-project/pull/53.
#[allow(non_snake_case)]
fn __unpin_scope_Struct() {
// Automatically create the appropriate conditional `Unpin` implementation.
//
// Basically this is equivalent to the following code:
//
// ```rust
// impl<T, U> Unpin for Struct<T, U> where T: Unpin {}
// ```
//
// However, if struct is public and there is a private type field,
// this would cause an E0446 (private type in public interface).
//
// When RFC 2145 is implemented (rust-lang/rust#48054),
// this will become a lint, rather then a hard error.
//
// As a workaround for this, we generate a new struct, containing all of
// the pinned fields from our #[pin_project] type. This struct is declared
// within a function, which makes it impossible to be named by user code.
// This guarantees that it will use the default auto-trait impl for Unpin -
// that is, it will implement Unpin iff all of its fields implement Unpin.
// This type can be safely declared as 'public', satisfying the privacy
// checker without actually allowing user code to access it.
//
// This allows users to apply the #[pin_project] attribute to types
// regardless of the privacy of the types of their fields.
//
// See also https://github.com/taiki-e/pin-project/pull/53.
struct __Struct<'pin, T, U> {
__pin_project_use_generics: ::pin_project::__private::AlwaysUnpin<'pin, (T, U)>,
__pin_project_use_generics: ::pin_project::__private::AlwaysUnpin<
'pin,
(::pin_project::__private::PhantomData<T>, ::pin_project::__private::PhantomData<U>),
>,
__field0: T,
}
impl<'pin, T, U> ::core::marker::Unpin for Struct<T, U> where
__Struct<'pin, T, U>: ::core::marker::Unpin
impl<'pin, T, U> ::pin_project::__private::Unpin for Struct<T, U> where
__Struct<'pin, T, U>: ::pin_project::__private::Unpin
{
}
}
// A dummy impl of `UnsafeUnpin`, to ensure that the user cannot implement it.
//
// To ensure that users don't accidentally write a non-functional `UnsafeUnpin`
// impls, we emit one ourselves. If the user ends up writing an `UnsafeUnpin`
// impl, they'll get a "conflicting implementations of trait" error when
// coherence checks are run.
unsafe impl<T, U> ::pin_project::UnsafeUnpin for Struct<T, U> {}
// Ensure that struct does not implement `Drop`.
//
// There are two possible cases:
// 1. The user type does not implement Drop. In this case,
// the first blanked impl will not apply to it. This code
// will compile, as there is only one impl of MustNotImplDrop for the user type
// 2. The user type does impl Drop. This will make the blanket impl applicable,
// which will then conflict with the explicit MustNotImplDrop impl below.
// This will result in a compilation error, which is exactly what we want.
trait StructMustNotImplDrop {}
#[allow(clippy::drop_bounds)]
impl<T: ::core::ops::Drop> StructMustNotImplDrop for T {}
#[allow(single_use_lifetimes)]
impl<T, U> StructMustNotImplDrop for Struct<T, U> {}
// Ensure that struct does not implement `Drop`.
//
// If you attempt to provide an Drop impl, the blanket impl will
// then apply to your type, causing a compile-time error due to
// the conflict with the second impl.
trait StructMustNotImplDrop {}
#[allow(clippy::drop_bounds, drop_bounds)]
impl<T: ::pin_project::__private::Drop> StructMustNotImplDrop for T {}
impl<T, U> StructMustNotImplDrop for Struct<T, U> {}
// A dummy impl of `PinnedDrop`, to ensure that users don't accidentally
// write a non-functional `PinnedDrop` impls.
impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
// Ensure that it's impossible to use pin projections on a #[repr(packed)] struct.
//
// Taking a reference to a packed field is unsafe, and applying
// #[deny(safe_packed_borrows)] makes sure that doing this without
// an 'unsafe' block (which we deliberately do not generate)
// is a hard error.
//
// If the struct ends up having #[repr(packed)] applied somehow,
// this will generate an (unfriendly) error message. Under all reasonable
// circumstances, we'll detect the #[repr(packed)] attribute, and generate
// a much nicer error above.
//
// See https://github.com/taiki-e/pin-project/pull/34 for more details.
#[allow(single_use_lifetimes)]
#[allow(non_snake_case)]
#[deny(safe_packed_borrows)]
fn __pin_project_assert_not_repr_packed_Struct<T, U>(val: &Struct<T, U>) {
&val.pinned;
&val.unpinned;
}
// Ensure that it's impossible to use pin projections on a #[repr(packed)]
// struct.
//
// Taking a reference to a packed field is UB, and applying
// `#[forbid(unaligned_references)]` makes sure that doing this is a hard error.
//
// If the struct ends up having #[repr(packed)] applied somehow,
// this will generate an (unfriendly) error message. Under all reasonable
// circumstances, we'll detect the #[repr(packed)] attribute, and generate
// a much nicer error above.
//
// See https://github.com/taiki-e/pin-project/pull/34 for more details.
#[forbid(unaligned_references, safe_packed_borrows)]
fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
let _ = &this.pinned;
let _ = &this.unpinned;
}
};
fn main() {}

129
third_party/rust/pin-project/examples/unsafe_unpin-expanded.rs vendored
View File

@ -6,85 +6,110 @@
// use pin_project::{pin_project, UnsafeUnpin};
//
// #[pin_project(UnsafeUnpin)]
// pub struct Foo<T, U> {
// pub struct Struct<T, U> {
// #[pin]
// pinned: T,
// unpinned: U,
// }
//
// unsafe impl<T: Unpin, U> UnsafeUnpin for Foo<T, U> {}
// unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
//
// fn main() {}
// ```
#![allow(dead_code, unused_imports, unused_parens)]
#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
#![allow(clippy::no_effect, clippy::needless_lifetimes)]
use pin_project::{pin_project, UnsafeUnpin};
pub struct Foo<T, U> {
pub struct Struct<T, U> {
// #[pin]
pinned: T,
unpinned: U,
}
#[allow(clippy::mut_mut)] // This lint warns `&mut &mut <ty>`.
#[allow(dead_code)] // This lint warns unused fields/variants.
pub(crate) struct __FooProjection<'pin, T, U> {
pinned: ::core::pin::Pin<&'pin mut (T)>,
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::mut_mut)]
#[allow(clippy::type_repetition_in_bounds)]
pub(crate) struct __StructProjection<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
unpinned: &'pin mut (U),
}
#[allow(dead_code)] // This lint warns unused fields/variants.
pub(crate) struct __FooProjectionRef<'pin, T, U> {
pinned: ::core::pin::Pin<&'pin (T)>,
#[doc(hidden)]
#[allow(dead_code)]
#[allow(single_use_lifetimes)]
#[allow(clippy::type_repetition_in_bounds)]
pub(crate) struct __StructProjectionRef<'pin, T, U>
where
Struct<T, U>: 'pin,
{
pinned: ::pin_project::__private::Pin<&'pin (T)>,
unpinned: &'pin (U),
}
impl<T, U> Foo<T, U> {
pub(crate) fn project<'pin>(
self: ::core::pin::Pin<&'pin mut Self>,
) -> __FooProjection<'pin, T, U> {
unsafe {
let Foo { pinned, unpinned } = self.get_unchecked_mut();
__FooProjection { pinned: ::core::pin::Pin::new_unchecked(pinned), unpinned }
#[doc(hidden)]
#[allow(non_upper_case_globals)]
#[allow(single_use_lifetimes)]
#[allow(clippy::used_underscore_binding)]
const _: () = {
impl<T, U> Struct<T, U> {
pub(crate) fn project<'pin>(
self: ::pin_project::__private::Pin<&'pin mut Self>,
) -> __StructProjection<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_unchecked_mut();
__StructProjection {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
pub(crate) fn project_ref<'pin>(
self: ::pin_project::__private::Pin<&'pin Self>,
) -> __StructProjectionRef<'pin, T, U> {
unsafe {
let Self { pinned, unpinned } = self.get_ref();
__StructProjectionRef {
pinned: ::pin_project::__private::Pin::new_unchecked(pinned),
unpinned,
}
}
}
}
pub(crate) fn project_ref<'pin>(
self: ::core::pin::Pin<&'pin Self>,
) -> __FooProjectionRef<'pin, T, U> {
unsafe {
let Foo { pinned, unpinned } = self.get_ref();
__FooProjectionRef { pinned: ::core::pin::Pin::new_unchecked(pinned), unpinned }
}
impl<'pin, T, U> ::pin_project::__private::Unpin for Struct<T, U> where
::pin_project::__private::Wrapper<'pin, Self>: ::pin_project::UnsafeUnpin
{
}
}
unsafe impl<T: Unpin, U> UnsafeUnpin for Foo<T, U> {}
// Ensure that struct does not implement `Drop`.
//
// See ./struct-default-expanded.rs for details.
trait StructMustNotImplDrop {}
#[allow(clippy::drop_bounds, drop_bounds)]
impl<T: ::pin_project::__private::Drop> StructMustNotImplDrop for T {}
impl<T, U> StructMustNotImplDrop for Struct<T, U> {}
impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
#[allow(single_use_lifetimes)]
impl<'pin, T, U> ::core::marker::Unpin for Foo<T, U> where
::pin_project::__private::Wrapper<'pin, Self>: ::pin_project::UnsafeUnpin
{
}
// Ensure that it's impossible to use pin projections on a #[repr(packed)]
// struct.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/34
// for details.
#[forbid(unaligned_references, safe_packed_borrows)]
fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
let _ = &this.pinned;
let _ = &this.unpinned;
}
};
// Ensure that struct does not implement `Drop`.
//
// See ./struct-default-expanded.rs for details.
trait FooMustNotImplDrop {}
#[allow(clippy::drop_bounds)]
impl<T: ::core::ops::Drop> FooMustNotImplDrop for T {}
#[allow(single_use_lifetimes)]
impl<T, U> FooMustNotImplDrop for Foo<T, U> {}
// Ensure that it's impossible to use pin projections on a #[repr(packed)] struct.
//
// See ./struct-default-expanded.rs and https://github.com/taiki-e/pin-project/pull/34
// for details.
#[allow(single_use_lifetimes)]
#[allow(non_snake_case)]
#[deny(safe_packed_borrows)]
fn __pin_project_assert_not_repr_packed_Foo<T, U>(val: &Foo<T, U>) {
&val.pinned;
&val.unpinned;
}
unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
fn main() {}

6
third_party/rust/pin-project/examples/unsafe_unpin.rs vendored
View File

@ -1,16 +1,16 @@
// See ./pinned_drop-expanded.rs for generated code.
// See ./unsafe_unpin-expanded.rs for generated code.
#![allow(dead_code)]
use pin_project::{pin_project, UnsafeUnpin};
#[pin_project(UnsafeUnpin)]
pub struct Foo<T, U> {
pub struct Struct<T, U> {
#[pin]
pinned: T,
unpinned: U,
}
unsafe impl<T: Unpin, U> UnsafeUnpin for Foo<T, U> {}
unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
fn main() {}

169
third_party/rust/pin-project/src/lib.rs vendored
View File

@ -1,13 +1,15 @@
//! A crate for safe and ergonomic pin-projection.
//! A crate for safe and ergonomic [pin-projection].
//!
//! ## Examples
//! # Examples
//!
//! [`pin_project`] attribute creates a projection struct covering all the fields.
//! [`#[pin_project]`][`pin_project`] attribute creates projection types
//! covering all the fields of struct or enum.
//!
//! ```rust
//! use pin_project::pin_project;
//! use std::pin::Pin;
//!
//! use pin_project::pin_project;
//!
//! #[pin_project]
//! struct Struct<T, U> {
//! #[pin]
@ -16,7 +18,7 @@
//! }
//!
//! impl<T, U> Struct<T, U> {
//! fn foo(self: Pin<&mut Self>) {
//! fn method(self: Pin<&mut Self>) {
//! let this = self.project();
//! let _: Pin<&mut T> = this.pinned; // Pinned reference to the field
//! let _: &mut U = this.unpinned; // Normal reference to the field
@ -24,43 +26,44 @@
//! }
//! ```
//!
//! [Code like this will be generated](https://github.com/taiki-e/pin-project/blob/master/examples/struct-default-expanded.rs)
//! [*code like this will be generated*][struct-default-expanded]
//!
//! See [`pin_project`] attribute for more details.
//!
//! Also, there are examples and generated code of each feature in [examples](https://github.com/taiki-e/pin-project/blob/master/examples/README.md) directory.
//! See [`#[pin_project]`][`pin_project`] attribute for more details, and
//! see [examples] directory for more examples and generated code.
//!
//! [`pin_project`]: attr.pin_project.html
//! [examples]: https://github.com/taiki-e/pin-project/blob/master/examples/README.md
//! [pin-projection]: https://doc.rust-lang.org/nightly/std/pin/index.html#projections-and-structural-pinning
//! [struct-default-expanded]: https://github.com/taiki-e/pin-project/blob/master/examples/struct-default-expanded.rs
#![no_std]
#![recursion_limit = "256"]
#![doc(html_root_url = "https://docs.rs/pin-project/0.4.9")]
#![doc(test(
no_crate_inject,
attr(deny(warnings, rust_2018_idioms, single_use_lifetimes), allow(dead_code))
))]
#![warn(unsafe_code)]
#![warn(missing_docs, rust_2018_idioms, single_use_lifetimes, unreachable_pub)]
#![warn(clippy::all)]
// mem::take requires Rust 1.40
#![allow(clippy::mem_replace_with_default)]
#![warn(clippy::all, clippy::default_trait_access)]
// mem::take and #[non_exhaustive] requires Rust 1.40
#![allow(clippy::mem_replace_with_default, clippy::manual_non_exhaustive)]
#![allow(clippy::needless_doctest_main)]
#[doc(inline)]
pub use pin_project_internal::pin_project;
#[doc(inline)]
pub use pin_project_internal::pinned_drop;
#[allow(deprecated)]
#[doc(inline)]
pub use pin_project_internal::project;
#[allow(deprecated)]
#[doc(inline)]
pub use pin_project_internal::project_ref;
#[allow(deprecated)]
#[doc(inline)]
pub use pin_project_internal::project_replace;
/// A trait used for custom implementations of [`Unpin`].
/// This trait is used in conjunction with the `UnsafeUnpin`
/// argument to [`pin_project`]
/// argument to [`#[pin_project]`][`pin_project`]
///
/// The Rust [`Unpin`] trait is safe to implement - by itself,
/// implementing it cannot lead to undefined behavior. Undefined
@ -73,9 +76,9 @@ pub use pin_project_internal::project_ref;
///
/// However, things change if you want to provide a custom [`Unpin`] impl
/// for your `#[pin_project]` type. As stated in [the Rust
/// documentation](https://doc.rust-lang.org/nightly/std/pin/index.html#projections-and-structural-pinning),
/// you must be sure to only implement [`Unpin`] when all of your `#[pin]` fields (i.e. structurally
/// pinned fields) are also [`Unpin`].
/// documentation][pin-projection], you must be sure to only implement [`Unpin`]
/// when all of your `#[pin]` fields (i.e. structurally pinned fields) are also
/// [`Unpin`].
///
/// To help highlight this unsafety, the `UnsafeUnpin` trait is provided.
/// Implementing this trait is logically equivalent to implementing [`Unpin`] -
@ -87,15 +90,16 @@ pub use pin_project_internal::project_ref;
///
/// Note that if you specify `#[pin_project(UnsafeUnpin)]`, but do *not*
/// provide an impl of `UnsafeUnpin`, your type will never implement [`Unpin`].
/// This is effectively the same thing as adding a [`PhantomPinned`] to your type
/// This is effectively the same thing as adding a [`PhantomPinned`] to your
/// type.
///
/// Since this trait is `unsafe`, impls of it will be detected by the `unsafe_code` lint,
/// and by tools like `cargo geiger`.
/// Since this trait is `unsafe`, impls of it will be detected by the
/// `unsafe_code` lint, and by tools like [`cargo geiger`][cargo-geiger].
///
/// ## Examples
/// # Examples
///
/// An `UnsafeUnpin` impl which, in addition to requiring that structurally pinned
/// fields be [`Unpin`], imposes an additional requirement:
/// An `UnsafeUnpin` impl which, in addition to requiring that structurally
/// pinned fields be [`Unpin`], imposes an additional requirement:
///
/// ```rust
/// use pin_project::{pin_project, UnsafeUnpin};
@ -112,34 +116,41 @@ pub use pin_project_internal::project_ref;
///
/// [`PhantomPinned`]: core::marker::PhantomPinned
/// [`pin_project`]: attr.pin_project.html
#[allow(unsafe_code)]
/// [pin-projection]: https://doc.rust-lang.org/nightly/std/pin/index.html#projections-and-structural-pinning
/// [cargo-geiger]: https://github.com/rust-secure-code/cargo-geiger
pub unsafe trait UnsafeUnpin {}
// Not public API.
#[doc(hidden)]
pub mod __private {
use super::UnsafeUnpin;
use core::{marker::PhantomData, pin::Pin};
#[doc(hidden)]
pub use core::{
marker::{PhantomData, PhantomPinned, Unpin},
mem::ManuallyDrop,
ops::Drop,
pin::Pin,
ptr,
};
#[doc(hidden)]
pub use pin_project_internal::__PinProjectInternalDerive;
// It is safe to implement PinnedDrop::drop, but it is not safe to call it.
// This is because destructors can be called multiple times (double dropping
// is unsound: rust-lang/rust#62360).
use super::UnsafeUnpin;
// Implementing `PinnedDrop::drop` is safe, but calling it is not safe.
// This is because destructors can be called multiple times in safe code and
// [double dropping is unsound](https://github.com/rust-lang/rust/pull/62360).
//
// Ideally, it would be desirable to be able to prohibit manual calls in the
// same way as Drop::drop, but the library cannot. So, by using macros and
// replacing them with private traits, we prevent users from calling
// PinnedDrop::drop.
// Ideally, it would be desirable to be able to forbid manual calls in
// the same way as [`Drop::drop`], but the library cannot do it. So, by using
// macros and replacing them with private traits, we prevent users from
// calling `PinnedDrop::drop`.
//
// Users can implement `Drop` safely using `#[pinned_drop]`.
// Users can implement [`Drop`] safely using `#[pinned_drop]` and can drop a
// type that implements `PinnedDrop` using the [`drop`] function safely.
// **Do not call or implement this trait directly.**
#[doc(hidden)]
pub trait PinnedDrop {
// Since calling it twice on the same object would be UB,
// this method is unsafe.
#[allow(unsafe_code)]
#[doc(hidden)]
unsafe fn drop(self: Pin<&mut Self>);
}
@ -151,6 +162,7 @@ pub mod __private {
//
// Supposed we have the following code:
//
// ```rust
// #[pin_project(UnsafeUnpin)]
// struct MyStruct<T> {
// #[pin] field: T
@ -158,48 +170,81 @@ pub mod __private {
//
// impl<T> Unpin for MyStruct<T> where MyStruct<T>: UnsafeUnpin {} // generated by pin-project-internal
// impl<T> Unpin for MyStruct<T> where T: Copy // written by the user
// ```
//
// We want this code to be rejected - the user is completely bypassing `UnsafeUnpin`,
// and providing an unsound Unpin impl in safe code!
// We want this code to be rejected - the user is completely bypassing
// `UnsafeUnpin`, and providing an unsound Unpin impl in safe code!
//
// Unfortunately, the Rust compiler will accept the above code.
// Because MyStruct is declared in the same crate as the user-provided impl,
// the compiler will notice that 'MyStruct<T>: UnsafeUnpin' never holds.
// the compiler will notice that `MyStruct<T>: UnsafeUnpin` never holds.
//
// The solution is to introduce the 'Wrapper' struct, which is defined
// in the 'pin-project' crate.
// The solution is to introduce the `Wrapper` struct, which is defined
// in the `pin-project` crate.
//
// We now have code that looks like this:
//
// ```rust
// impl<T> Unpin for MyStruct<T> where Wrapper<MyStruct<T>>: UnsafeUnpin {} // generated by pin-project-internal
// impl<T> Unpin for MyStruct<T> where T: Copy // written by the user
// ```
//
// We also have 'unsafe impl<T> UnsafeUnpin for Wrapper<T> where T: UnsafeUnpin {}' in the
// 'pin-project' crate.
// We also have `unsafe impl<T> UnsafeUnpin for Wrapper<T> where T: UnsafeUnpin {}`
// in the `pin-project` crate.
//
// Now, our generated impl has a bound involving a type defined in another crate - Wrapper.
// This will cause rust to conservatively assume that 'Wrapper<MyStruct<T>>: UnsafeUnpin'
// holds, in the interest of preserving forwards compatibility (in case such an impl is added
// for Wrapper<T> in a new version of the crate).
// Now, our generated impl has a bound involving a type defined in another
// crate - Wrapper. This will cause rust to conservatively assume that
// `Wrapper<MyStruct<T>>: UnsafeUnpin` holds, in the interest of preserving
// forwards compatibility (in case such an impl is added for Wrapper<T> in
// a new version of the crate).
//
// This will cause rust to reject any other Unpin impls for MyStruct<T>, since it will
// assume that our generated impl could potentially apply in any situation.
// This will cause rust to reject any other `Unpin` impls for MyStruct<T>,
// since it will assume that our generated impl could potentially apply in
// any situation.
//
// This achieves the desired effect - when the user writes `#[pin_project(UnsafeUnpin)]`,
// the user must either provide no impl of `UnsafeUnpin` (which is equivalent
// to making the type never implement Unpin), or provide an impl of `UnsafeUnpin`.
// It is impossible for them to provide an impl of `Unpin`
// This achieves the desired effect - when the user writes
// `#[pin_project(UnsafeUnpin)]`, the user must either provide no impl of
// `UnsafeUnpin` (which is equivalent to making the type never implement
// Unpin), or provide an impl of `UnsafeUnpin`. It is impossible for them to
// provide an impl of `Unpin`
#[doc(hidden)]
pub struct Wrapper<'a, T: ?Sized>(PhantomData<&'a ()>, T);
#[allow(unsafe_code)]
unsafe impl<T: ?Sized> UnsafeUnpin for Wrapper<'_, T> where T: UnsafeUnpin {}
// This is an internal helper struct used by `pin-project-internal`.
//
// See https://github.com/taiki-e/pin-project/pull/53 for more details.
#[doc(hidden)]
pub struct AlwaysUnpin<'a, T: ?Sized>(PhantomData<&'a ()>, PhantomData<T>);
pub struct AlwaysUnpin<'a, T>(PhantomData<&'a ()>, PhantomData<T>);
impl<T: ?Sized> Unpin for AlwaysUnpin<'_, T> {}
impl<T> Unpin for AlwaysUnpin<'_, T> {}
// This is an internal helper used to ensure a value is dropped.
#[doc(hidden)]
pub struct UnsafeDropInPlaceGuard<T: ?Sized>(pub *mut T);
impl<T: ?Sized> Drop for UnsafeDropInPlaceGuard<T> {
fn drop(&mut self) {
unsafe {
ptr::drop_in_place(self.0);
}
}
}
// This is an internal helper used to ensure a value is overwritten without
// its destructor being called.
#[doc(hidden)]
pub struct UnsafeOverwriteGuard<T> {
pub value: ManuallyDrop<T>,
pub target: *mut T,
}
impl<T> Drop for UnsafeOverwriteGuard<T> {
fn drop(&mut self) {
unsafe {
ptr::write(self.target, ptr::read(&*self.value));
}
}
}
}

40
third_party/rust/pin-project/tests/cfg.rs vendored
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@ -1,29 +1,29 @@
#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
// Refs: https://doc.rust-lang.org/nightly/reference/attributes.html
use pin_project::pin_project;
use std::{marker::PhantomPinned, pin::Pin};
use pin_project::pin_project;
fn is_unpin<T: Unpin>() {}
#[cfg(target_os = "linux")]
pub struct Linux;
struct Linux;
#[cfg(not(target_os = "linux"))]
pub struct Other;
struct Other;
// Use this type to check that `cfg(any())` is working properly.
// If `cfg(any())` is not working properly, `is_unpin` will fail.
pub struct Any(PhantomPinned);
struct Any(PhantomPinned);
#[test]
fn cfg() {
// structs
#[pin_project]
pub struct SameName {
#[pin_project(project_replace)]
struct SameName {
#[cfg(target_os = "linux")]
#[pin]
inner: Linux,
@ -42,8 +42,8 @@ fn cfg() {
#[cfg(not(target_os = "linux"))]
let _x = SameName { inner: Other };
#[pin_project]
pub struct DifferentName {
#[pin_project(project_replace)]
struct DifferentName {
#[cfg(target_os = "linux")]
#[pin]
l: Linux,
@ -62,8 +62,8 @@ fn cfg() {
#[cfg(not(target_os = "linux"))]
let _x = DifferentName { o: Other };
#[pin_project]
pub struct TupleStruct(
#[pin_project(project_replace)]
struct TupleStruct(
#[cfg(target_os = "linux")]
#[pin]
Linux,
@ -84,8 +84,8 @@ fn cfg() {
// enums
#[pin_project]
pub enum Variant {
#[pin_project(project_replace)]
enum Variant {
#[cfg(target_os = "linux")]
Inner(#[pin] Linux),
#[cfg(not(target_os = "linux"))]
@ -111,8 +111,8 @@ fn cfg() {
#[cfg(not(target_os = "linux"))]
let _x = Variant::Other(Other);
#[pin_project]
pub enum Field {
#[pin_project(project_replace)]
enum Field {
SameName {
#[cfg(target_os = "linux")]
#[pin]
@ -168,8 +168,8 @@ fn cfg() {
#[test]
fn cfg_attr() {
#[pin_project]
pub struct SameCfg {
#[pin_project(project_replace)]
struct SameCfg {
#[cfg(target_os = "linux")]
#[cfg_attr(target_os = "linux", pin)]
inner: Linux,
@ -194,8 +194,8 @@ fn cfg_attr() {
#[cfg(not(target_os = "linux"))]
let _: Pin<&mut Other> = x.inner;
#[pin_project]
pub struct DifferentCfg {
#[pin_project(project_replace)]
struct DifferentCfg {
#[cfg(target_os = "linux")]
#[cfg_attr(target_os = "linux", pin)]
inner: Linux,
@ -234,7 +234,7 @@ fn cfg_attr() {
#[test]
fn cfg_attr_any_packed() {
// Since `cfg(any())` can never be true, it is okay for this to pass.
#[pin_project]
#[pin_project(project_replace)]
#[cfg_attr(any(), repr(packed))]
struct Struct {
#[pin]

5
third_party/rust/pin-project/tests/compiletest.rs vendored
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@ -1,12 +1,11 @@
#![cfg(pin_project_show_unpin_struct)]
#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#[ignore]
#[rustversion::attr(not(nightly), ignore)]
#[test]
fn ui() {
let t = trybuild::TestCases::new();
t.compile_fail("tests/ui/cfg/*.rs");
t.compile_fail("tests/ui/not_unpin/*.rs");
t.compile_fail("tests/ui/pin_project/*.rs");
t.compile_fail("tests/ui/pinned_drop/*.rs");
t.compile_fail("tests/ui/project/*.rs");

158
third_party/rust/pin-project/tests/drop_order.rs vendored Normal file
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@ -0,0 +1,158 @@
#![warn(rust_2018_idioms, single_use_lifetimes)]
use std::{cell::Cell, pin::Pin, thread};
use pin_project::pin_project;
struct D<'a>(&'a Cell<usize>, usize);
impl Drop for D<'_> {
fn drop(&mut self) {
if !thread::panicking() {
let old = self.0.replace(self.1);
assert_eq!(old, self.1 - 1);
}
}
}
#[pin_project(project_replace)]
struct StructPinned<'a> {
#[pin]
f1: D<'a>,
#[pin]
f2: D<'a>,
}
#[pin_project(project_replace)]
struct StructUnpinned<'a> {
f1: D<'a>,
f2: D<'a>,
}
#[pin_project(project_replace)]
struct TuplePinned<'a>(#[pin] D<'a>, #[pin] D<'a>);
#[pin_project(project_replace)]
struct TupleUnpinned<'a>(D<'a>, D<'a>);
#[pin_project(project_replace= EnumProj)]
enum Enum<'a> {
StructPinned {
#[pin]
f1: D<'a>,
#[pin]
f2: D<'a>,
},
StructUnpinned {
f1: D<'a>,
f2: D<'a>,
},
TuplePinned(#[pin] D<'a>, #[pin] D<'a>),
TupleUnpinned(D<'a>, D<'a>),
}
#[test]
fn struct_pinned() {
{
let c = Cell::new(0);
let _x = StructPinned { f1: D(&c, 1), f2: D(&c, 2) };
}
{
let c = Cell::new(0);
let mut _x = StructPinned { f1: D(&c, 1), f2: D(&c, 2) };
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(StructPinned { f1: D(&c, 3), f2: D(&c, 4) });
}
}
#[test]
fn struct_unpinned() {
{
let c = Cell::new(0);
let _x = StructUnpinned { f1: D(&c, 1), f2: D(&c, 2) };
}
{
let c = Cell::new(0);
let mut _x = StructUnpinned { f1: D(&c, 1), f2: D(&c, 2) };
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(StructUnpinned { f1: D(&c, 3), f2: D(&c, 4) });
}
}
#[test]
fn tuple_pinned() {
{
let c = Cell::new(0);
let _x = TuplePinned(D(&c, 1), D(&c, 2));
}
{
let c = Cell::new(0);
let mut _x = TuplePinned(D(&c, 1), D(&c, 2));
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(TuplePinned(D(&c, 3), D(&c, 4)));
}
}
#[test]
fn tuple_unpinned() {
{
let c = Cell::new(0);
let _x = TupleUnpinned(D(&c, 1), D(&c, 2));
}
{
let c = Cell::new(0);
let mut _x = TupleUnpinned(D(&c, 1), D(&c, 2));
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(TupleUnpinned(D(&c, 3), D(&c, 4)));
}
}
#[test]
fn enum_struct() {
{
let c = Cell::new(0);
let _x = Enum::StructPinned { f1: D(&c, 1), f2: D(&c, 2) };
}
{
let c = Cell::new(0);
let mut _x = Enum::StructPinned { f1: D(&c, 1), f2: D(&c, 2) };
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(Enum::StructPinned { f1: D(&c, 3), f2: D(&c, 4) });
}
{
let c = Cell::new(0);
let _x = Enum::StructUnpinned { f1: D(&c, 1), f2: D(&c, 2) };
}
{
let c = Cell::new(0);
let mut _x = Enum::StructUnpinned { f1: D(&c, 1), f2: D(&c, 2) };
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(Enum::StructUnpinned { f1: D(&c, 3), f2: D(&c, 4) });
}
}
#[test]
fn enum_tuple() {
{
let c = Cell::new(0);
let _x = Enum::TuplePinned(D(&c, 1), D(&c, 2));
}
{
let c = Cell::new(0);
let mut _x = Enum::TuplePinned(D(&c, 1), D(&c, 2));
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(Enum::TuplePinned(D(&c, 3), D(&c, 4)));
}
{
let c = Cell::new(0);
let _x = Enum::TupleUnpinned(D(&c, 1), D(&c, 2));
}
{
let c = Cell::new(0);
let mut _x = Enum::TupleUnpinned(D(&c, 1), D(&c, 2));
let _y = Pin::new(&mut _x);
let _z = _y.project_replace(Enum::TupleUnpinned(D(&c, 3), D(&c, 4)));
}
}

136
third_party/rust/pin-project/tests/include/basic-safe-part.rs vendored Normal file
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@ -0,0 +1,136 @@
// default #[pin_project], PinnedDrop, project_replace, !Unpin, and UnsafeUnpin without UnsafeUnpin impl are completely safe.
#[::pin_project::pin_project]
#[derive(Debug)]
pub struct DefaultStruct<T, U> {
#[pin]
pub pinned: T,
pub unpinned: U,
}
#[::pin_project::pin_project]
#[derive(Debug)]
pub struct DefaultTupleStruct<T, U>(#[pin] pub T, pub U);
#[::pin_project::pin_project]
#[derive(Debug)]
pub enum DefaultEnum<T, U> {
Struct {
#[pin]
pinned: T,
unpinned: U,
},
Tuple(#[pin] T, U),
Unit,
}
#[::pin_project::pin_project(PinnedDrop)]
#[derive(Debug)]
pub struct PinnedDropStruct<T, U> {
#[pin]
pub pinned: T,
pub unpinned: U,
}
#[::pin_project::pinned_drop]
impl<T, U> PinnedDrop for PinnedDropStruct<T, U> {
fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
#[::pin_project::pin_project(PinnedDrop)]
#[derive(Debug)]
pub struct PinnedDropTupleStruct<T, U>(#[pin] pub T, pub U);
#[::pin_project::pinned_drop]
impl<T, U> PinnedDrop for PinnedDropTupleStruct<T, U> {
fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
#[::pin_project::pin_project(PinnedDrop)]
#[derive(Debug)]
pub enum PinnedDropEnum<T, U> {
Struct {
#[pin]
pinned: T,
unpinned: U,
},
Tuple(#[pin] T, U),
Unit,
}
#[::pin_project::pinned_drop]
impl<T, U> PinnedDrop for PinnedDropEnum<T, U> {
fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
}
#[::pin_project::pin_project(project_replace)]
#[derive(Debug)]
pub struct ReplaceStruct<T, U> {
#[pin]
pub pinned: T,
pub unpinned: U,
}
#[::pin_project::pin_project(project_replace)]
#[derive(Debug)]
pub struct ReplaceTupleStruct<T, U>(#[pin] pub T, pub U);
#[::pin_project::pin_project(project_replace)]
#[derive(Debug)]
pub enum ReplaceEnum<T, U> {
Struct {
#[pin]
pinned: T,
unpinned: U,
},
Tuple(#[pin] T, U),
Unit,
}
#[::pin_project::pin_project(UnsafeUnpin)]
#[derive(Debug)]
pub struct UnsafeUnpinStruct<T, U> {
#[pin]
pub pinned: T,
pub unpinned: U,
}
#[::pin_project::pin_project(UnsafeUnpin)]
#[derive(Debug)]
pub struct UnsafeUnpinTupleStruct<T, U>(#[pin] pub T, pub U);
#[::pin_project::pin_project(UnsafeUnpin)]
#[derive(Debug)]
pub enum UnsafeUnpinEnum<T, U> {
Struct {
#[pin]
pinned: T,
unpinned: U,
},
Tuple(#[pin] T, U),
Unit,
}
#[::pin_project::pin_project(!Unpin)]
#[derive(Debug)]
pub struct NotUnpinStruct<T, U> {
#[pin]
pub pinned: T,
pub unpinned: U,
}
#[::pin_project::pin_project(!Unpin)]
#[derive(Debug)]
pub struct NotUnpinTupleStruct<T, U>(#[pin] pub T, pub U);
#[::pin_project::pin_project(!Unpin)]
#[derive(Debug)]
pub enum NotUnpinEnum<T, U> {
Struct {
#[pin]
pinned: T,
unpinned: U,
},
Tuple(#[pin] T, U),
Unit,
}

14
third_party/rust/pin-project/tests/include/basic.rs vendored Normal file
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@ -0,0 +1,14 @@
include!("basic-safe-part.rs");
unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
::pin_project::UnsafeUnpin for UnsafeUnpinStruct<T, U>
{
}
unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
::pin_project::UnsafeUnpin for UnsafeUnpinTupleStruct<T, U>
{
}
unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
::pin_project::UnsafeUnpin for UnsafeUnpinEnum<T, U>
{
}

127
third_party/rust/pin-project/tests/lint.rs vendored Normal file
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@ -0,0 +1,127 @@
#![warn(nonstandard_style, rust_2018_idioms, unused)]
// Note: This does not guarantee compatibility with forbidding these lints in the future.
// If rustc adds a new lint, we may not be able to keep this.
#![forbid(future_incompatible, rust_2018_compatibility)]
#![allow(unknown_lints)] // for old compilers
#![warn(
box_pointers,
deprecated_in_future,
elided_lifetimes_in_paths,
explicit_outlives_requirements,
macro_use_extern_crate,
meta_variable_misuse,
missing_copy_implementations,
missing_debug_implementations,
missing_docs,
non_ascii_idents,
single_use_lifetimes,
trivial_casts,
trivial_numeric_casts,
unaligned_references,
unreachable_pub,
unused_extern_crates,
unused_import_braces,
unused_lifetimes,
unused_qualifications,
unused_results,
variant_size_differences
)]
// absolute_paths_not_starting_with_crate, anonymous_parameters, keyword_idents, pointer_structural_match: forbidden as a part of future_incompatible
// unsafe_block_in_unsafe_fn: unstable: https://github.com/rust-lang/rust/issues/71668
// unsafe_code: checked in forbid_unsafe module
// unstable_features: deprecated: https://doc.rust-lang.org/beta/rustc/lints/listing/allowed-by-default.html#unstable-features
// unused_crate_dependencies: unrelated
#![warn(clippy::all, clippy::pedantic, clippy::nursery)]
// Check interoperability with rustc and clippy lints.
pub mod basic {
include!("include/basic.rs");
}
pub mod forbid_unsafe {
#![forbid(unsafe_code)]
include!("include/basic-safe-part.rs");
}
pub mod clippy {
use pin_project::pin_project;
#[rustversion::attr(before(1.37), allow(single_use_lifetimes))] // https://github.com/rust-lang/rust/issues/53738
#[pin_project(project_replace)]
#[derive(Debug)]
pub struct MutMutStruct<'a, T, U> {
#[pin]
pub pinned: &'a mut T,
pub unpinned: &'a mut U,
}
#[rustversion::attr(before(1.37), allow(single_use_lifetimes))] // https://github.com/rust-lang/rust/issues/53738
#[pin_project(project_replace)]
#[derive(Debug)]
pub struct MutMutTupleStruct<'a, T, U>(#[pin] &'a mut T, &'a mut U);
#[rustversion::attr(before(1.37), allow(single_use_lifetimes))] // https://github.com/rust-lang/rust/issues/53738
#[pin_project(project_replace)]
#[derive(Debug)]
pub enum MutMutEnum<'a, T, U> {
Struct {
#[pin]
pinned: &'a mut T,
unpinned: &'a mut U,
},
Tuple(#[pin] &'a mut T, &'a mut U),
Unit,
}
#[pin_project(project_replace)]
#[derive(Debug)]
pub struct TypeRepetitionInBoundsStruct<T, U>
where
Self: Sized,
{
#[pin]
pub pinned: T,
pub unpinned: U,
}
#[pin_project(project_replace)]
#[derive(Debug)]
pub struct TypeRepetitionInBoundsTupleStruct<T, U>(#[pin] T, U)
where
Self: Sized;
#[pin_project(project_replace)]
#[derive(Debug)]
pub enum TypeRepetitionInBoundsEnum<T, U>
where
Self: Sized,
{
Struct {
#[pin]
pinned: T,
unpinned: U,
},
Tuple(#[pin] T, U),
Unit,
}
#[pin_project(project_replace)]
#[derive(Debug)]
pub struct UsedUnderscoreBindingStruct<T, U> {
#[pin]
pub _pinned: T,
pub _unpinned: U,
}
#[pin_project(project_replace)]
#[derive(Debug)]
pub enum UsedUnderscoreBindingEnum<T, U> {
Struct {
#[pin]
_pinned: T,
_unpinned: U,
},
}
}

19
third_party/rust/pin-project/tests/no_infer_outlives.rs vendored
View File

@ -1,19 +0,0 @@
use pin_project::{pin_project, project};
trait Bar<X> {
type Y;
}
struct Example<A>(A);
impl<X, T> Bar<X> for Example<T> {
type Y = Option<T>;
}
#[pin_project]
struct Foo<A, B> {
_x: <Example<A> as Bar<B>>::Y,
}
#[project]
impl<A, B> Foo<A, B> {}

614
third_party/rust/pin-project/tests/pin_project.rs vendored
View File

@ -1,56 +1,71 @@
#![no_std]
#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
use core::{marker::PhantomPinned, pin::Pin};
use std::{
marker::{PhantomData, PhantomPinned},
pin::Pin,
};
use pin_project::{pin_project, pinned_drop, UnsafeUnpin};
#[test]
fn test_pin_project() {
#[pin_project]
fn projection() {
#[pin_project(
project = StructProj,
project_ref = StructProjRef,
project_replace = StructProjOwn,
)]
struct Struct<T, U> {
#[pin]
field1: T,
field2: U,
}
let mut foo = Struct { field1: 1, field2: 2 };
let mut s = Struct { field1: 1, field2: 2 };
let mut s_orig = Pin::new(&mut s);
let s = s_orig.as_mut().project();
let mut foo_orig = Pin::new(&mut foo);
let foo = foo_orig.as_mut().project();
let x: Pin<&mut i32> = foo.field1;
let x: Pin<&mut i32> = s.field1;
assert_eq!(*x, 1);
let y: &mut i32 = foo.field2;
let y: &mut i32 = s.field2;
assert_eq!(*y, 2);
assert_eq!(foo_orig.as_ref().field1, 1);
assert_eq!(foo_orig.as_ref().field2, 2);
assert_eq!(s_orig.as_ref().field1, 1);
assert_eq!(s_orig.as_ref().field2, 2);
let mut foo = Struct { field1: 1, field2: 2 };
let mut s = Struct { field1: 1, field2: 2 };
let foo = Pin::new(&mut foo).project();
let __StructProjection { field1, field2 } = foo;
let StructProj { field1, field2 } = Pin::new(&mut s).project();
let _: Pin<&mut i32> = field1;
let _: &mut i32 = field2;
#[pin_project]
let StructProjRef { field1, field2 } = Pin::new(&s).project_ref();
let _: Pin<&i32> = field1;
let _: &i32 = field2;
let mut s = Pin::new(&mut s);
let StructProjOwn { field1, field2 } =
s.as_mut().project_replace(Struct { field1: 3, field2: 4 });
let _: PhantomData<i32> = field1;
let _: i32 = field2;
assert_eq!(field2, 2);
assert_eq!(s.field1, 3);
assert_eq!(s.field2, 4);
#[pin_project(project_replace)]
struct TupleStruct<T, U>(#[pin] T, U);
let mut bar = TupleStruct(1, 2);
let mut s = TupleStruct(1, 2);
let s = Pin::new(&mut s).project();
let bar = Pin::new(&mut bar).project();
let x: Pin<&mut i32> = bar.0;
let x: Pin<&mut i32> = s.0;
assert_eq!(*x, 1);
let y: &mut i32 = bar.1;
let y: &mut i32 = s.1;
assert_eq!(*y, 2);
#[pin_project]
#[pin_project(project_replace, project = EnumProj)]
#[derive(Eq, PartialEq, Debug)]
enum Enum<A, B, C, D> {
Variant1(#[pin] A, B),
@ -62,48 +77,46 @@ fn test_pin_project() {
None,
}
let mut baz = Enum::Variant1(1, 2);
let mut e = Enum::Variant1(1, 2);
let mut e_orig = Pin::new(&mut e);
let e = e_orig.as_mut().project();
let mut baz_orig = Pin::new(&mut baz);
let baz = baz_orig.as_mut().project();
match baz {
__EnumProjection::Variant1(x, y) => {
match e {
EnumProj::Variant1(x, y) => {
let x: Pin<&mut i32> = x;
assert_eq!(*x, 1);
let y: &mut i32 = y;
assert_eq!(*y, 2);
}
__EnumProjection::Variant2 { field1, field2 } => {
EnumProj::Variant2 { field1, field2 } => {
let _x: Pin<&mut i32> = field1;
let _y: &mut i32 = field2;
}
__EnumProjection::None => {}
EnumProj::None => {}
}
assert_eq!(Pin::into_ref(baz_orig).get_ref(), &Enum::Variant1(1, 2));
assert_eq!(Pin::into_ref(e_orig).get_ref(), &Enum::Variant1(1, 2));
let mut baz = Enum::Variant2 { field1: 3, field2: 4 };
let mut e = Enum::Variant2 { field1: 3, field2: 4 };
let mut e = Pin::new(&mut e).project();
let mut baz = Pin::new(&mut baz).project();
match &mut baz {
__EnumProjection::Variant1(x, y) => {
match &mut e {
EnumProj::Variant1(x, y) => {
let _x: &mut Pin<&mut i32> = x;
let _y: &mut &mut i32 = y;
}
__EnumProjection::Variant2 { field1, field2 } => {
EnumProj::Variant2 { field1, field2 } => {
let x: &mut Pin<&mut i32> = field1;
assert_eq!(**x, 3);
let y: &mut &mut i32 = field2;
assert_eq!(**y, 4);
}
__EnumProjection::None => {}
EnumProj::None => {}
}
if let __EnumProjection::Variant2 { field1, field2 } = baz {
if let EnumProj::Variant2 { field1, field2 } = e {
let x: Pin<&mut i32> = field1;
assert_eq!(*x, 3);
@ -114,31 +127,55 @@ fn test_pin_project() {
#[test]
fn enum_project_set() {
#[pin_project]
#[pin_project(project_replace, project = EnumProj)]
#[derive(Eq, PartialEq, Debug)]
enum Bar {
enum Enum {
Variant1(#[pin] u8),
Variant2(bool),
}
let mut bar = Bar::Variant1(25);
let mut bar_orig = Pin::new(&mut bar);
let bar_proj = bar_orig.as_mut().project();
let mut e = Enum::Variant1(25);
let mut e_orig = Pin::new(&mut e);
let e_proj = e_orig.as_mut().project();
match bar_proj {
__BarProjection::Variant1(val) => {
let new_bar = Bar::Variant2(val.as_ref().get_ref() == &25);
bar_orig.set(new_bar);
match e_proj {
EnumProj::Variant1(val) => {
let new_e = Enum::Variant2(val.as_ref().get_ref() == &25);
e_orig.set(new_e);
}
_ => unreachable!(),
}
assert_eq!(bar, Bar::Variant2(true));
assert_eq!(e, Enum::Variant2(true));
}
#[test]
fn where_clause_and_associated_type_fields() {
fn where_clause() {
#[pin_project]
struct Struct<T>
where
T: Copy,
{
field: T,
}
#[pin_project]
struct TupleStruct<T>(T)
where
T: Copy;
#[pin_project]
enum EnumWhere<T>
where
T: Copy,
{
Variant(T),
}
}
#[test]
fn where_clause_and_associated_type_field() {
#[pin_project(project_replace)]
struct Struct1<I>
where
I: Iterator,
@ -148,7 +185,7 @@ fn where_clause_and_associated_type_fields() {
field2: I::Item,
}
#[pin_project]
#[pin_project(project_replace)]
struct Struct2<I, J>
where
I: Iterator<Item = J>,
@ -158,8 +195,8 @@ fn where_clause_and_associated_type_fields() {
field2: J,
}
#[pin_project]
pub struct Struct3<T>
#[pin_project(project_replace)]
struct Struct3<T>
where
T: 'static,
{
@ -170,7 +207,12 @@ fn where_clause_and_associated_type_fields() {
impl<T> Static for Struct3<T> {}
#[pin_project]
#[pin_project(project_replace)]
struct TupleStruct<I>(#[pin] I, I::Item)
where
I: Iterator;
#[pin_project(project_replace)]
enum Enum<I>
where
I: Iterator,
@ -180,22 +222,9 @@ fn where_clause_and_associated_type_fields() {
}
}
#[allow(explicit_outlives_requirements)] // https://github.com/rust-lang/rust/issues/60993
#[test]
fn unsized_in_where_clause() {
#[pin_project]
struct Struct<I>
where
I: ?Sized,
{
#[pin]
field: I,
}
}
#[test]
fn derive_copy() {
#[pin_project]
#[pin_project(project_replace)]
#[derive(Clone, Copy)]
struct Struct<T> {
val: T,
@ -210,60 +239,61 @@ fn derive_copy() {
fn move_out() {
struct NotCopy;
#[pin_project]
#[pin_project(project_replace)]
struct Struct {
val: NotCopy,
}
let foo = Struct { val: NotCopy };
let _val: NotCopy = foo.val;
let x = Struct { val: NotCopy };
let _val: NotCopy = x.val;
#[pin_project]
#[pin_project(project_replace)]
enum Enum {
Variant(NotCopy),
}
let bar = Enum::Variant(NotCopy);
let _val: NotCopy = match bar {
let x = Enum::Variant(NotCopy);
#[allow(clippy::infallible_destructuring_match)]
let _val: NotCopy = match x {
Enum::Variant(val) => val,
};
}
#[test]
fn trait_bounds_on_type_generics() {
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct1<'a, T: ?Sized> {
field: &'a mut T,
}
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct2<'a, T: ::core::fmt::Debug> {
field: &'a mut T,
}
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct3<'a, T: core::fmt::Debug> {
field: &'a mut T,
}
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct4<'a, T: core::fmt::Debug + core::fmt::Display> {
field: &'a mut T,
}
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct5<'a, T: core::fmt::Debug + ?Sized> {
field: &'a mut T,
}
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct6<'a, T: core::fmt::Debug = [u8; 16]> {
field: &'a mut T,
}
let _: Struct6<'_> = Struct6 { field: &mut [0u8; 16] };
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct7<T: 'static> {
field: T,
}
@ -272,16 +302,16 @@ fn trait_bounds_on_type_generics() {
impl<T> Static for Struct7<T> {}
#[pin_project]
#[pin_project(project_replace)]
pub struct Struct8<'a, 'b: 'a> {
field1: &'a u8,
field2: &'b u8,
}
#[pin_project]
#[pin_project(project_replace)]
pub struct TupleStruct<'a, T: ?Sized>(&'a mut T);
#[pin_project]
#[pin_project(project_replace)]
enum Enum<'a, T: ?Sized> {
Variant(&'a mut T),
}
@ -289,34 +319,77 @@ fn trait_bounds_on_type_generics() {
#[test]
fn overlapping_lifetime_names() {
#[pin_project]
pub struct Foo<'pin, T> {
#[pin_project(project_replace)]
pub struct Struct1<'pin, T> {
#[pin]
field: &'pin mut T,
}
#[pin_project(project_replace)]
pub struct Struct2<'pin, 'pin_, 'pin__> {
#[pin]
field: &'pin &'pin_ &'pin__ (),
}
pub trait A<'a> {}
#[allow(single_use_lifetimes)] // https://github.com/rust-lang/rust/issues/55058
#[pin_project(project_replace)]
pub struct HRTB<'pin___, T>
where
for<'pin> &'pin T: Unpin,
T: for<'pin> A<'pin>,
for<'pin, 'pin_, 'pin__> &'pin &'pin_ &'pin__ T: Unpin,
{
#[pin]
field: &'pin___ mut T,
}
}
#[test]
fn combine() {
#[pin_project(PinnedDrop, UnsafeUnpin)]
pub struct Foo<T> {
field1: u8,
pub struct PinnedDropWithUnsafeUnpin<T> {
#[pin]
field2: T,
field: T,
}
#[pinned_drop]
impl<T> PinnedDrop for Foo<T> {
impl<T> PinnedDrop for PinnedDropWithUnsafeUnpin<T> {
fn drop(self: Pin<&mut Self>) {}
}
#[allow(unsafe_code)]
unsafe impl<T: Unpin> UnsafeUnpin for Foo<T> {}
unsafe impl<T: Unpin> UnsafeUnpin for PinnedDropWithUnsafeUnpin<T> {}
#[pin_project(PinnedDrop, !Unpin)]
pub struct PinnedDropWithNotUnpin<T> {
#[pin]
field: T,
}
#[pinned_drop]
impl<T> PinnedDrop for PinnedDropWithNotUnpin<T> {
fn drop(self: Pin<&mut Self>) {}
}
#[pin_project(UnsafeUnpin, project_replace)]
pub struct UnsafeUnpinWithReplace<T> {
#[pin]
field: T,
}
unsafe impl<T: Unpin> UnsafeUnpin for UnsafeUnpinWithReplace<T> {}
#[pin_project(!Unpin, project_replace)]
pub struct NotUnpinWithReplace<T> {
#[pin]
field: T,
}
}
#[test]
fn private_type_in_public_type() {
#[pin_project]
#[pin_project(project_replace)]
pub struct PublicStruct<T> {
#[pin]
inner: PrivateStruct<T>,
@ -325,23 +398,24 @@ fn private_type_in_public_type() {
struct PrivateStruct<T>(T);
}
#[allow(clippy::needless_lifetimes)]
#[test]
fn lifetime_project() {
#[pin_project]
#[pin_project(project_replace)]
struct Struct1<T, U> {
#[pin]
pinned: T,
unpinned: U,
}
#[pin_project]
#[pin_project(project_replace)]
struct Struct2<'a, T, U> {
#[pin]
pinned: &'a mut T,
unpinned: U,
}
#[pin_project]
#[pin_project(project_replace, project = EnumProj, project_ref = EnumProjRef)]
enum Enum<T, U> {
Variant {
#[pin]
@ -371,35 +445,35 @@ fn lifetime_project() {
impl<T, U> Enum<T, U> {
fn get_pin_ref<'a>(self: Pin<&'a Self>) -> Pin<&'a T> {
match self.project_ref() {
__EnumProjectionRef::Variant { pinned, .. } => pinned,
EnumProjRef::Variant { pinned, .. } => pinned,
}
}
fn get_pin_mut<'a>(self: Pin<&'a mut Self>) -> Pin<&'a mut T> {
match self.project() {
__EnumProjection::Variant { pinned, .. } => pinned,
EnumProj::Variant { pinned, .. } => pinned,
}
}
}
}
#[rustversion::since(1.36)]
#[rustversion::since(1.36)] // https://github.com/rust-lang/rust/pull/61207
#[test]
fn lifetime_project_elided() {
#[pin_project]
#[pin_project(project_replace)]
struct Struct1<T, U> {
#[pin]
pinned: T,
unpinned: U,
}
#[pin_project]
#[pin_project(project_replace)]
struct Struct2<'a, T, U> {
#[pin]
pinned: &'a mut T,
unpinned: U,
}
#[pin_project]
#[pin_project(project_replace, project = EnumProj, project_ref = EnumProjRef)]
enum Enum<T, U> {
Variant {
#[pin]
@ -429,12 +503,12 @@ fn lifetime_project_elided() {
impl<T, U> Enum<T, U> {
fn get_pin_ref(self: Pin<&Self>) -> Pin<&T> {
match self.project_ref() {
__EnumProjectionRef::Variant { pinned, .. } => pinned,
EnumProjRef::Variant { pinned, .. } => pinned,
}
}
fn get_pin_mut(self: Pin<&mut Self>) -> Pin<&mut T> {
match self.project() {
__EnumProjection::Variant { pinned, .. } => pinned,
EnumProj::Variant { pinned, .. } => pinned,
}
}
}
@ -443,7 +517,7 @@ fn lifetime_project_elided() {
mod visibility {
use pin_project::pin_project;
#[pin_project]
#[pin_project(project_replace)]
pub(crate) struct A {
pub b: u8,
}
@ -461,7 +535,7 @@ fn visibility() {
#[test]
fn trivial_bounds() {
#[pin_project]
#[pin_project(project_replace)]
pub struct NoGenerics {
#[pin]
field: PhantomPinned,
@ -471,82 +545,342 @@ fn trivial_bounds() {
#[test]
fn dst() {
#[pin_project]
pub struct A<T: ?Sized> {
struct Struct1<T: ?Sized> {
x: T,
}
let _: &mut A<dyn core::fmt::Debug> = &mut A { x: 0u8 } as _;
let mut x = Struct1 { x: 0_u8 };
let x: Pin<&mut Struct1<dyn core::fmt::Debug>> = Pin::new(&mut x as _);
let _y: &mut (dyn core::fmt::Debug) = x.project().x;
#[pin_project]
pub struct B<T: ?Sized> {
struct Struct2<T: ?Sized> {
#[pin]
x: T,
}
let mut x = Struct2 { x: 0_u8 };
let x: Pin<&mut Struct2<dyn core::fmt::Debug + Unpin>> = Pin::new(&mut x as _);
let _y: Pin<&mut (dyn core::fmt::Debug + Unpin)> = x.project().x;
#[pin_project(UnsafeUnpin)]
struct Struct5<T: ?Sized> {
x: T,
}
#[pin_project(UnsafeUnpin)]
struct Struct6<T: ?Sized> {
#[pin]
x: T,
}
#[pin_project(PinnedDrop)]
struct Struct7<T: ?Sized> {
x: T,
}
#[pinned_drop]
impl<T: ?Sized> PinnedDrop for Struct7<T> {
fn drop(self: Pin<&mut Self>) {}
}
#[pin_project(PinnedDrop)]
struct Struct8<T: ?Sized> {
#[pin]
x: T,
}
#[pinned_drop]
impl<T: ?Sized> PinnedDrop for Struct8<T> {
fn drop(self: Pin<&mut Self>) {}
}
#[pin_project(!Unpin)]
struct Struct9<T: ?Sized> {
x: T,
}
#[pin_project(!Unpin)]
struct Struct10<T: ?Sized> {
#[pin]
x: T,
}
#[pin_project]
pub struct C<T: ?Sized>(T);
struct TupleStruct1<T: ?Sized>(T);
#[pin_project]
pub struct D<T: ?Sized>(#[pin] T);
struct TupleStruct2<T: ?Sized>(#[pin] T);
#[pin_project(UnsafeUnpin)]
struct TupleStruct5<T: ?Sized>(T);
#[pin_project(UnsafeUnpin)]
struct TupleStruct6<T: ?Sized>(#[pin] T);
#[pin_project(PinnedDrop)]
struct TupleStruct7<T: ?Sized>(T);
#[pinned_drop]
impl<T: ?Sized> PinnedDrop for TupleStruct7<T> {
fn drop(self: Pin<&mut Self>) {}
}
#[pin_project(PinnedDrop)]
struct TupleStruct8<T: ?Sized>(#[pin] T);
#[pinned_drop]
impl<T: ?Sized> PinnedDrop for TupleStruct8<T> {
fn drop(self: Pin<&mut Self>) {}
}
#[pin_project(!Unpin)]
struct TupleStruct9<T: ?Sized>(T);
#[pin_project(!Unpin)]
struct TupleStruct10<T: ?Sized>(#[pin] T);
}
#[allow(explicit_outlives_requirements)] // https://github.com/rust-lang/rust/issues/60993
#[test]
fn unsized_in_where_clause() {
#[pin_project]
struct Struct3<T>
where
T: ?Sized,
{
x: T,
}
#[pin_project]
struct Struct4<T>
where
T: ?Sized,
{
#[pin]
x: T,
}
#[pin_project]
struct TupleStruct3<T>(T)
where
T: ?Sized;
#[pin_project]
struct TupleStruct4<T>(#[pin] T)
where
T: ?Sized;
}
#[test]
fn dyn_type() {
#[pin_project]
struct Struct1 {
a: i32,
f: dyn core::fmt::Debug,
}
#[pin_project]
struct Struct2 {
a: i32,
#[pin]
f: dyn core::fmt::Debug,
}
#[pin_project]
struct Struct3 {
a: i32,
f: dyn core::fmt::Debug + Send,
}
#[pin_project]
struct Struct4 {
a: i32,
#[pin]
f: dyn core::fmt::Debug + Send,
}
#[pin_project]
struct TupleStruct1(dyn core::fmt::Debug);
#[pin_project]
struct TupleStruct2(#[pin] dyn core::fmt::Debug);
#[pin_project]
struct TupleStruct3(dyn core::fmt::Debug + Send);
#[pin_project]
struct TupleStruct4(#[pin] dyn core::fmt::Debug + Send);
}
#[test]
fn parse_self() {
macro_rules! mac {
($($tt:tt)*) => {
$($tt)*
};
}
pub trait Trait {
type Assoc;
}
#[pin_project(project_replace)]
pub struct Generics<T: Trait<Assoc = Self>>
where
Self: Trait<Assoc = Self>,
<Self as Trait>::Assoc: Sized,
mac!(Self): Trait<Assoc = mac!(Self)>,
{
_f: T,
}
impl<T: Trait<Assoc = Self>> Trait for Generics<T> {
type Assoc = Self;
}
#[pin_project(project_replace)]
pub struct Struct {
_f1: Box<Self>,
_f2: Box<<Self as Trait>::Assoc>,
_f3: Box<mac!(Self)>,
_f4: [(); Self::ASSOC],
_f5: [(); Self::assoc()],
_f6: [(); mac!(Self::assoc())],
}
impl Struct {
const ASSOC: usize = 1;
const fn assoc() -> usize {
0
}
}
impl Trait for Struct {
type Assoc = Self;
}
#[pin_project(project_replace)]
struct Tuple(
Box<Self>,
Box<<Self as Trait>::Assoc>,
Box<mac!(Self)>,
[(); Self::ASSOC],
[(); Self::assoc()],
[(); mac!(Self::assoc())],
);
impl Tuple {
const ASSOC: usize = 1;
const fn assoc() -> usize {
0
}
}
impl Trait for Tuple {
type Assoc = Self;
}
#[pin_project(project_replace)]
enum Enum {
Struct {
_f1: Box<Self>,
_f2: Box<<Self as Trait>::Assoc>,
_f3: Box<mac!(Self)>,
_f4: [(); Self::ASSOC],
_f5: [(); Self::assoc()],
_f6: [(); mac!(Self::assoc())],
},
Tuple(
Box<Self>,
Box<<Self as Trait>::Assoc>,
Box<mac!(Self)>,
[(); Self::ASSOC],
[(); Self::assoc()],
[(); mac!(Self::assoc())],
),
}
impl Enum {
const ASSOC: usize = 1;
const fn assoc() -> usize {
0
}
}
impl Trait for Enum {
type Assoc = Self;
}
}
#[test]
fn self_in_where_clause() {
pub trait Trait {}
#[pin_project]
pub struct Struct1<T>
where
Self: Trait,
{
x: T,
fn no_infer_outlives() {
trait Bar<X> {
type Y;
}
impl<T> Trait for Struct1<T> {}
struct Example<A>(A);
pub trait Trait2 {
type Foo;
impl<X, T> Bar<X> for Example<T> {
type Y = Option<T>;
}
#[pin_project]
pub struct Struct2<T>
where
Self: Trait2<Foo = Struct1<T>>,
<Self as Trait2>::Foo: Trait,
{
x: T,
}
impl<T> Trait2 for Struct2<T> {
type Foo = Struct1<T>;
#[pin_project(project_replace)]
struct Foo<A, B> {
_x: <Example<A> as Bar<B>>::Y,
}
}
// https://github.com/rust-lang/rust/issues/47949
// https://github.com/taiki-e/pin-project/pull/194#discussion_r419098111
#[allow(clippy::many_single_char_names)]
#[test]
fn project_replace_panic() {
use std::panic;
#[pin_project(project_replace)]
struct S<T, U> {
#[pin]
pinned: T,
unpinned: U,
}
struct D<'a>(&'a mut bool, bool);
impl Drop for D<'_> {
fn drop(&mut self) {
*self.0 = true;
if self.1 {
panic!()
}
}
}
let (mut a, mut b, mut c, mut d) = (false, false, false, false);
let res = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let mut x = S { pinned: D(&mut a, true), unpinned: D(&mut b, false) };
let _y = Pin::new(&mut x)
.project_replace(S { pinned: D(&mut c, false), unpinned: D(&mut d, false) });
// Previous `x.pinned` was dropped and panicked when `project_replace` is
// called, so this is unreachable.
unreachable!();
}));
assert!(res.is_err());
assert!(a);
assert!(b);
assert!(c);
assert!(d);
let (mut a, mut b, mut c, mut d) = (false, false, false, false);
let res = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let mut x = S { pinned: D(&mut a, false), unpinned: D(&mut b, true) };
{
let _y = Pin::new(&mut x)
.project_replace(S { pinned: D(&mut c, false), unpinned: D(&mut d, false) });
// `_y` (previous `x.unpinned`) live to the end of this scope, so
// this is not unreachable.
// unreachable!();
}
unreachable!();
}));
assert!(res.is_err());
assert!(a);
assert!(b);
assert!(c);
assert!(d);
}

280
third_party/rust/pin-project/tests/pinned_drop.rs vendored
View File

@ -1,9 +1,8 @@
#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
use std::pin::Pin;
#[test]
fn safe_project() {
@ -27,66 +26,64 @@ fn safe_project() {
}
#[test]
fn mut_self_argument() {
fn self_argument_in_macro() {
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
#[pin_project(PinnedDrop)]
struct Struct {
data: usize,
}
#[pinned_drop]
impl PinnedDrop for Struct {
fn drop(mut self: Pin<&mut Self>) {
let _: &mut _ = &mut self.data;
}
}
}
#[test]
fn self_in_vec() {
#[pin_project(PinnedDrop)]
struct Struct {
data: usize,
x: (),
}
#[pinned_drop]
impl PinnedDrop for Struct {
fn drop(self: Pin<&mut Self>) {
let _: Vec<_> = vec![self.data];
let _: Vec<_> = vec![self.x];
}
}
}
#[test]
fn self_in_macro_containing_fn() {
#[pin_project(PinnedDrop)]
pub struct Struct {
data: usize,
}
use std::pin::Pin;
macro_rules! emit {
use pin_project::{pin_project, pinned_drop};
macro_rules! mac {
($($tt:tt)*) => {
$($tt)*
};
}
#[pin_project(PinnedDrop)]
pub struct Struct {
_x: (),
}
#[pinned_drop]
impl PinnedDrop for Struct {
fn drop(self: Pin<&mut Self>) {
let _ = emit!({
let _ = mac!({
impl Struct {
pub fn f(self) {}
pub fn _f(self) -> Self {
self
}
}
});
self.data;
}
}
}
#[test]
fn self_call() {
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
#[pin_project(PinnedDrop)]
pub struct Struct {
data: usize,
pub struct Struct<T> {
_x: T,
}
trait Trait {
@ -97,10 +94,10 @@ fn self_call() {
fn assoc_fn(_this: Pin<&mut Self>) {}
}
impl Trait for Struct {}
impl<T> Trait for Struct<T> {}
#[pinned_drop]
impl PinnedDrop for Struct {
impl<T> PinnedDrop for Struct<T> {
fn drop(mut self: Pin<&mut Self>) {
self.self_ref();
self.as_ref().self_pin_ref();
@ -112,74 +109,45 @@ fn self_call() {
}
}
// See also `ui/pinned_drop/self.rs`.
#[test]
fn self_expr() {
fn self_struct() {
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
#[pin_project(PinnedDrop)]
pub struct Struct {
x: usize,
pub x: (),
}
#[pinned_drop]
impl PinnedDrop for Struct {
#[allow(irrefutable_let_patterns)]
#[allow(clippy::match_single_binding)]
fn drop(mut self: Pin<&mut Self>) {
let _: Self = Self { x: 0 };
// expr
let _: Self = Self { x: () };
// pat
match *self {
Self { x: _ } => {}
}
if let Self { x: _ } = *self {}
let Self { x: _ } = *self;
}
}
#[pin_project(PinnedDrop)]
pub struct TupleStruct(usize);
#[pinned_drop]
impl PinnedDrop for TupleStruct {
fn drop(mut self: Pin<&mut Self>) {
let _: Self = Self(0);
}
}
#[rustversion::since(1.37)]
#[pin_project(PinnedDrop)]
pub enum Enum {
StructVariant { x: usize },
TupleVariant(usize),
}
#[rustversion::since(1.37)]
#[pinned_drop]
impl PinnedDrop for Enum {
fn drop(mut self: Pin<&mut Self>) {
// let _: Self = Self::StructVariant { x: 0 }; //~ ERROR can't use generic parameters from outer function [E0401]
let _: Self = Self::TupleVariant(0);
}
}
}
// See also `ui/pinned_drop/self.rs`.
#[test]
fn self_pat() {
#[pin_project(PinnedDrop)]
pub struct Struct {
x: usize,
}
#[pinned_drop]
impl PinnedDrop for Struct {
fn drop(mut self: Pin<&mut Self>) {
// match *self {
// Self { x: _ } => {} //~ ERROR can't use generic parameters from outer function [E0401]
// }
// if let Self { x: _ } = *self {} //~ ERROR can't use generic parameters from outer function [E0401]
// let Self { x: _ } = *self; //~ ERROR can't use generic parameters from outer function [E0401]
}
}
#[pin_project(PinnedDrop)]
pub struct TupleStruct(usize);
pub struct TupleStruct(());
#[pinned_drop]
impl PinnedDrop for TupleStruct {
#[allow(irrefutable_let_patterns)]
fn drop(mut self: Pin<&mut Self>) {
// expr
let _: Self = Self(());
// pat
match *self {
Self(_) => {}
}
@ -187,24 +155,148 @@ fn self_pat() {
let Self(_) = *self;
}
}
}
#[rustversion::since(1.37)] // type_alias_enum_variants requires Rust 1.37
#[test]
fn self_enum() {
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
#[rustversion::since(1.37)]
#[pin_project(PinnedDrop)]
pub enum Enum {
StructVariant { x: usize },
TupleVariant(usize),
Struct { x: () },
Tuple(()),
}
#[rustversion::since(1.37)]
#[pinned_drop]
impl PinnedDrop for Enum {
fn drop(mut self: Pin<&mut Self>) {
// match *self {
// Self::StructVariant { x: _ } => {} //~ ERROR can't use generic parameters from outer function [E0401]
// Self::TupleVariant(_) => {} //~ ERROR can't use generic parameters from outer function [E0401]
// }
// if let Self::StructVariant { x: _ } = *self {} //~ ERROR can't use generic parameters from outer function [E0401]
// if let Self::TupleVariant(_) = *self {} //~ ERROR can't use generic parameters from outer function [E0401]
// expr
let _: Self = Self::Struct { x: () };
let _: Self = Self::Tuple(());
// pat
match *self {
Self::Struct { x: _ } => {}
Self::Tuple(_) => {}
}
if let Self::Struct { x: _ } = *self {}
if let Self::Tuple(_) = *self {}
}
}
}
// See also `ui/pinned_drop/self.rs`.
#[rustversion::since(1.40)] // https://github.com/rust-lang/rust/pull/64690
#[test]
fn self_in_macro_def() {
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
#[pin_project(PinnedDrop)]
pub struct Struct {
_x: (),
}
#[pinned_drop]
impl PinnedDrop for Struct {
fn drop(self: Pin<&mut Self>) {
macro_rules! mac {
() => {{
let _ = self;
}};
}
mac!();
}
}
}
#[test]
fn self_inside_macro() {
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
macro_rules! mac {
($($tt:tt)*) => {
$($tt)*
};
}
#[pin_project(PinnedDrop)]
pub struct Struct<T: Send>
where
mac!(Self): Send,
{
_x: T,
}
impl<T: Send> Struct<T> {
const ASSOCIATED1: &'static str = "1";
fn associated1() {}
}
trait Trait {
type Associated2;
const ASSOCIATED2: &'static str;
fn associated2();
}
impl<T: Send> Trait for Struct<T> {
type Associated2 = ();
const ASSOCIATED2: &'static str = "2";
fn associated2() {}
}
#[pinned_drop]
impl<T: Send> PinnedDrop for Struct<T>
where
mac!(Self): Send,
{
#[allow(path_statements)]
#[allow(clippy::no_effect)]
fn drop(self: Pin<&mut Self>) {
// inherent items
mac!(Self::ASSOCIATED1;);
mac!(<Self>::ASSOCIATED1;);
mac!(Self::associated1(););
mac!(<Self>::associated1(););
// trait items
mac!(let _: <Self as Trait>::Associated2;);
mac!(Self::ASSOCIATED2;);
mac!(<Self>::ASSOCIATED2;);
mac!(<Self as Trait>::ASSOCIATED2;);
mac!(Self::associated2(););
mac!(<Self>::associated2(););
mac!(<Self as Trait>::associated2(););
}
}
}
#[test]
fn inside_macro() {
use std::pin::Pin;
use pin_project::{pin_project, pinned_drop};
#[pin_project(PinnedDrop)]
struct Struct(());
macro_rules! mac {
($expr:expr) => {
#[pinned_drop]
impl PinnedDrop for Struct {
#[allow(clippy::no_effect)]
fn drop(self: Pin<&mut Self>) {
$expr;
}
}
};
}
mac!(1);
}

184
third_party/rust/pin-project/tests/project.rs vendored
View File

@ -1,36 +1,33 @@
#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
#![allow(deprecated)]
// This hack is needed until https://github.com/rust-lang/rust/pull/69201
// makes it way into stable.
// Ceurrently, `#[attr] if true {}` doesn't even *parse* on stable,
// which means that it will error even behind a `#[rustversion::nightly]`
// Ceurrently, `#[attr] if true {}` doesn't even *parse* on MSRV,
// which means that it will error even behind a `#[rustversion::since(..)]`
//
// This trick makes sure that we don't even attempt to parse
// the `#[project] if let _` test on stable.
#[rustversion::nightly]
// the `#[project] if let _` test on MSRV.
#[rustversion::since(1.43)]
include!("project_if_attr.rs.in");
use pin_project::{pin_project, project};
use std::pin::Pin;
use pin_project::{pin_project, project, project_ref, project_replace};
#[project] // Nightly does not need a dummy attribute to the function.
#[test]
fn project_stmt_expr() {
// struct
#[pin_project]
struct Foo<T, U> {
struct Struct<T, U> {
#[pin]
field1: T,
field2: U,
}
let mut foo = Foo { field1: 1, field2: 2 };
let mut s = Struct { field1: 1, field2: 2 };
#[project]
let Foo { field1, field2 } = Pin::new(&mut foo).project();
let Struct { field1, field2 } = Pin::new(&mut s).project();
let x: Pin<&mut i32> = field1;
assert_eq!(*x, 1);
@ -38,15 +35,13 @@ fn project_stmt_expr() {
let y: &mut i32 = field2;
assert_eq!(*y, 2);
// tuple struct
#[pin_project]
struct Bar<T, U>(#[pin] T, U);
struct TupleStruct<T, U>(#[pin] T, U);
let mut bar = Bar(1, 2);
let mut s = TupleStruct(1, 2);
#[project]
let Bar(x, y) = Pin::new(&mut bar).project();
let TupleStruct(x, y) = Pin::new(&mut s).project();
let x: Pin<&mut i32> = x;
assert_eq!(*x, 1);
@ -54,10 +49,8 @@ fn project_stmt_expr() {
let y: &mut i32 = y;
assert_eq!(*y, 2);
// enum
#[pin_project]
enum Baz<A, B, C, D> {
enum Enum<A, B, C, D> {
Variant1(#[pin] A, B),
Variant2 {
#[pin]
@ -67,31 +60,31 @@ fn project_stmt_expr() {
None,
}
let mut baz = Baz::Variant1(1, 2);
let mut e = Enum::Variant1(1, 2);
let mut baz = Pin::new(&mut baz).project();
let mut e = Pin::new(&mut e).project();
#[project]
match &mut baz {
Baz::Variant1(x, y) => {
match &mut e {
Enum::Variant1(x, y) => {
let x: &mut Pin<&mut i32> = x;
assert_eq!(**x, 1);
let y: &mut &mut i32 = y;
assert_eq!(**y, 2);
}
Baz::Variant2 { field1, field2 } => {
Enum::Variant2 { field1, field2 } => {
let _x: &mut Pin<&mut i32> = field1;
let _y: &mut &mut i32 = field2;
}
Baz::None => {}
Enum::None => {}
}
#[project]
let val = match &mut baz {
Baz::Variant1(_, _) => true,
Baz::Variant2 { .. } => false,
Baz::None => false,
let val = match &mut e {
Enum::Variant1(_, _) => true,
Enum::Variant2 { .. } => false,
Enum::None => false,
};
assert_eq!(val, true);
}
@ -154,6 +147,7 @@ fn project_impl() {
}
#[allow(single_use_lifetimes)]
#[allow(clippy::needless_lifetimes)]
#[project]
impl<T, U> HasOverlappingLifetimes2<T, U> {
fn foo<'pin>(&'pin self) {}
@ -167,10 +161,11 @@ struct A {
}
mod project_use_1 {
use crate::A;
use core::pin::Pin;
use std::pin::Pin;
use pin_project::project;
use crate::A;
#[project]
use crate::A;
@ -185,9 +180,10 @@ mod project_use_1 {
}
mod project_use_2 {
use pin_project::project;
#[project]
use crate::A;
use pin_project::project;
#[project]
impl A {
@ -195,23 +191,111 @@ mod project_use_2 {
}
}
#[pin_project]
struct StructWhereClause<T>
where
T: Copy,
{
field: T,
#[allow(clippy::unnecessary_operation, clippy::unit_arg)]
#[test]
#[project]
fn non_stmt_expr_match() {
#[pin_project]
enum Enum<A> {
Variant(#[pin] A),
}
let mut x = Enum::Variant(1);
let x = Pin::new(&mut x).project();
Some(
#[project]
match x {
Enum::Variant(_x) => {}
},
);
}
#[pin_project]
struct TupleStructWhereClause<T>(T)
where
T: Copy;
// https://github.com/taiki-e/pin-project/issues/206
#[allow(clippy::unnecessary_operation, clippy::unit_arg)]
#[test]
#[project]
fn issue_206() {
#[pin_project]
enum Enum<A> {
Variant(#[pin] A),
}
#[pin_project]
enum EnumWhereClause<T>
where
T: Copy,
{
Variant(T),
let mut x = Enum::Variant(1);
let x = Pin::new(&mut x).project();
Some({
#[project]
match &x {
Enum::Variant(_) => {}
}
});
#[allow(clippy::never_loop)]
loop {
let _ = {
#[project]
match &x {
Enum::Variant(_) => {}
}
};
break;
}
}
#[project]
#[test]
fn combine() {
#[pin_project(project_replace)]
enum Enum<A> {
V1(#[pin] A),
V2,
}
let mut x = Enum::V1(1);
#[project]
match Pin::new(&mut x).project() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_ref]
match Pin::new(&x).project_ref() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_replace]
match Pin::new(&mut x).project_replace(Enum::V2) {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
}
// FIXME: This should be denied, but allowed for compatibility at this time.
#[project]
#[project_ref]
#[project_replace]
#[test]
fn combine_compat() {
#[pin_project(project_replace)]
enum Enum<A> {
V1(#[pin] A),
V2,
}
let mut x = Enum::V1(1);
#[project]
match Pin::new(&mut x).project() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_ref]
match Pin::new(&x).project_ref() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_replace]
match Pin::new(&mut x).project_replace(Enum::V2) {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
}

36
third_party/rust/pin-project/tests/project_if_attr.rs.in vendored
View File

@ -1,6 +1,3 @@
// FIXME: Once https://github.com/rust-lang/rust/pull/69201 makes its
// way into stable, move this back into `project.rs
#[test]
#[project]
fn project_if_let() {
@ -9,21 +6,40 @@ fn project_if_let() {
Variant1(#[pin] A),
Variant2(u8),
Variant3 {
#[pin] field: B
}
#[pin]
field: B,
},
}
let mut foo: Foo<bool, f32> = Foo::Variant1(true);
let foo = Pin::new(&mut foo).project();
let mut x: Foo<bool, f32> = Foo::Variant1(true);
let x = Pin::new(&mut x).project();
#[project]
if let Foo::Variant1(a) = foo {
if let Foo::Variant1(a) = x {
let a: Pin<&mut bool> = a;
assert_eq!(*a, true);
} else if let Foo::Variant2(_) = foo {
} else if let Foo::Variant2(_) = x {
unreachable!();
} else if let Foo::Variant3 { .. } = foo {
} else if let Foo::Variant3 { .. } = x {
unreachable!();
}
}
#[allow(clippy::unnecessary_operation, clippy::unit_arg)]
#[test]
#[project]
fn non_stmt_expr_if_let() {
#[pin_project]
enum Enum<A> {
Variant(#[pin] A),
}
let mut x = Enum::Variant(1);
let x = Pin::new(&mut x).project();
#[allow(irrefutable_let_patterns)]
Some(
#[project]
if let Enum::Variant(_x) = x {},
);
}

71
third_party/rust/pin-project/tests/project_ref.rs vendored
View File

@ -1,26 +1,25 @@
#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
#![allow(deprecated)]
use std::pin::Pin;
use pin_project::{pin_project, project_ref};
use std::pin::Pin;
#[project_ref] // Nightly does not need a dummy attribute to the function.
#[test]
fn project_stmt_expr() {
// struct
#[pin_project]
struct Foo<T, U> {
struct Struct<T, U> {
#[pin]
field1: T,
field2: U,
}
let foo = Foo { field1: 1, field2: 2 };
let s = Struct { field1: 1, field2: 2 };
#[project_ref]
let Foo { field1, field2 } = Pin::new(&foo).project_ref();
let Struct { field1, field2 } = Pin::new(&s).project_ref();
let x: Pin<&i32> = field1;
assert_eq!(*x, 1);
@ -31,12 +30,12 @@ fn project_stmt_expr() {
// tuple struct
#[pin_project]
struct Bar<T, U>(#[pin] T, U);
struct TupleStruct<T, U>(#[pin] T, U);
let bar = Bar(1, 2);
let s = TupleStruct(1, 2);
#[project_ref]
let Bar(x, y) = Pin::new(&bar).project_ref();
let TupleStruct(x, y) = Pin::new(&s).project_ref();
let x: Pin<&i32> = x;
assert_eq!(*x, 1);
@ -44,10 +43,8 @@ fn project_stmt_expr() {
let y: &i32 = y;
assert_eq!(*y, 2);
// enum
#[pin_project]
enum Baz<A, B, C, D> {
enum Enum<A, B, C, D> {
Variant1(#[pin] A, B),
Variant2 {
#[pin]
@ -57,31 +54,31 @@ fn project_stmt_expr() {
None,
}
let baz = Baz::Variant1(1, 2);
let e = Enum::Variant1(1, 2);
let baz = Pin::new(&baz).project_ref();
let e = Pin::new(&e).project_ref();
#[project_ref]
match &baz {
Baz::Variant1(x, y) => {
match &e {
Enum::Variant1(x, y) => {
let x: &Pin<&i32> = x;
assert_eq!(**x, 1);
let y: &&i32 = y;
assert_eq!(**y, 2);
}
Baz::Variant2 { field1, field2 } => {
Enum::Variant2 { field1, field2 } => {
let _x: &Pin<&i32> = field1;
let _y: &&i32 = field2;
}
Baz::None => {}
Enum::None => {}
}
#[project_ref]
let val = match &baz {
Baz::Variant1(_, _) => true,
Baz::Variant2 { .. } => false,
Baz::None => false,
let val = match &e {
Enum::Variant1(_, _) => true,
Enum::Variant2 { .. } => false,
Enum::None => false,
};
assert_eq!(val, true);
}
@ -144,8 +141,36 @@ fn project_impl() {
}
#[allow(single_use_lifetimes)]
#[allow(clippy::needless_lifetimes)]
#[project_ref]
impl<T, U> HasOverlappingLifetimes2<T, U> {
fn foo<'pin>(&'pin self) {}
}
}
#[project_ref]
#[test]
fn combine() {
#[pin_project(project_replace)]
enum Enum<A> {
V1(#[pin] A),
V2,
}
let mut x = Enum::V1(1);
#[project]
match Pin::new(&mut x).project() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_ref]
match Pin::new(&x).project_ref() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_replace]
match Pin::new(&mut x).project_replace(Enum::V2) {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
}

100
third_party/rust/pin-project/tests/project_replace.rs vendored Normal file
View File

@ -0,0 +1,100 @@
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
#![allow(deprecated)]
use std::{marker::PhantomData, pin::Pin};
use pin_project::{pin_project, project_replace};
#[project_replace] // Nightly does not need a dummy attribute to the function.
#[test]
fn project_replace_stmt_expr() {
#[pin_project(project_replace)]
struct Struct<T, U> {
#[pin]
field1: T,
field2: U,
}
let mut s = Struct { field1: 1, field2: 2 };
#[project_replace]
let Struct { field1, field2 } =
Pin::new(&mut s).project_replace(Struct { field1: 42, field2: 43 });
let _x: PhantomData<i32> = field1;
let y: i32 = field2;
assert_eq!(y, 2);
// tuple struct
#[pin_project(project_replace)]
struct TupleStruct<T, U>(#[pin] T, U);
let mut s = TupleStruct(1, 2);
#[project_replace]
let TupleStruct(x, y) = Pin::new(&mut s).project_replace(TupleStruct(42, 43));
let _x: PhantomData<i32> = x;
let y: i32 = y;
assert_eq!(y, 2);
#[pin_project(project_replace)]
enum Enum<A, B, C, D> {
Variant1(#[pin] A, B),
Variant2 {
#[pin]
field1: C,
field2: D,
},
None,
}
let mut e = Enum::Variant1(1, 2);
let e = Pin::new(&mut e).project_replace(Enum::None);
#[project_replace]
match e {
Enum::Variant1(x, y) => {
let _x: PhantomData<i32> = x;
let y: i32 = y;
assert_eq!(y, 2);
}
Enum::Variant2 { field1, field2 } => {
let _x: PhantomData<i32> = field1;
let _y: i32 = field2;
panic!()
}
Enum::None => panic!(),
}
}
#[project_replace]
#[test]
fn combine() {
#[pin_project(project_replace)]
enum Enum<A> {
V1(#[pin] A),
V2,
}
let mut x = Enum::V1(1);
#[project]
match Pin::new(&mut x).project() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_ref]
match Pin::new(&x).project_ref() {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
#[project_replace]
match Pin::new(&mut x).project_replace(Enum::V2) {
Enum::V1(_) => {}
Enum::V2 => unreachable!(),
}
}

12
third_party/rust/pin-project/tests/repr_packed.rs vendored
View File

@ -1,7 +1,8 @@
#![warn(unsafe_code)]
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
#![deny(safe_packed_borrows)]
// unaligned_references did not exist in older compilers and safe_packed_borrows was removed in the latest compilers.
// https://github.com/rust-lang/rust/pull/82525
#![allow(unknown_lints, renamed_and_removed_lints)]
#![forbid(unaligned_references, safe_packed_borrows)]
use std::cell::Cell;
@ -36,14 +37,15 @@ fn weird_repr_packed() {
}
}
#[allow(clippy::let_and_return)]
let field_addr = {
// We let this field drop by going out of scope,
// rather than explicitly calling drop(foo).
// Calling drop(foo) causes 'foo' to be moved
// into the 'drop' function, resulting in a different
// address.
let foo = Foo { field: 27 };
let field_addr = &foo.field as *const u8 as usize;
let x = Foo { field: 27 };
let field_addr = &x.field as *const u8 as usize;
field_addr
};
assert_eq!(field_addr, FIELD_ADDR.with(|f| f.get()));

13
third_party/rust/pin-project/tests/sized.rs vendored Normal file
View File

@ -0,0 +1,13 @@
#![warn(rust_2018_idioms, single_use_lifetimes)]
#![allow(dead_code)]
use pin_project::pin_project;
#[pin_project]
struct Foo<'a, I: ?Sized, Item>
where
I: Iterator,
{
iter: &'a mut I,
item: Option<Item>,
}

4
third_party/rust/pin-project/tests/ui/cfg/cfg_attr-resolve.stderr vendored
View File

@ -1,5 +1,5 @@
error[E0599]: no method named `project` found for struct `std::pin::Pin<&mut Foo<u8>>` in the current scope
error[E0599]: no method named `project` found for struct `Pin<&mut Foo<u8>>` in the current scope
--> $DIR/cfg_attr-resolve.rs:10:31
|
10 | let _x = Pin::new(&mut x).project(); //~ ERROR E0599
| ^^^^^^^ method not found in `std::pin::Pin<&mut Foo<u8>>`
| ^^^^^^^ method not found in `Pin<&mut Foo<u8>>`

8
third_party/rust/pin-project/tests/ui/cfg/cfg_attr-type-mismatch.stderr vendored
View File

@ -2,11 +2,11 @@ error[E0308]: mismatched types
--> $DIR/cfg_attr-type-mismatch.rs:19:27
|
19 | let _: Pin<&mut u8> = x.inner; //~ ERROR E0308
| ------------ ^^^^^^^ expected struct `std::pin::Pin`, found `&mut u8`
| ------------ ^^^^^^^ expected struct `Pin`, found `&mut u8`
| |
| expected due to this
|
= note: expected struct `std::pin::Pin<&mut u8>`
= note: expected struct `Pin<&mut u8>`
found mutable reference `&mut u8`
error[E0308]: mismatched types
@ -15,9 +15,9 @@ error[E0308]: mismatched types
23 | let _: &mut u8 = x.inner; //~ ERROR E0308
| ------- ^^^^^^^
| | |
| | expected `&mut u8`, found struct `std::pin::Pin`
| | expected `&mut u8`, found struct `Pin`
| | help: consider mutably borrowing here: `&mut x.inner`
| expected due to this
|
= note: expected mutable reference `&mut u8`
found struct `std::pin::Pin<&mut u8>`
found struct `Pin<&mut u8>`

14
third_party/rust/pin-project/tests/ui/cfg/cfg_attr-unpin.stderr vendored
View File

@ -1,22 +1,22 @@
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/cfg_attr-unpin.rs:18:5
|
15 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
18 | is_unpin::<Foo<PhantomPinned>>(); // ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `Foo<std::marker::PhantomPinned>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `Foo<PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Foo<std::marker::PhantomPinned>`
= note: required because it appears within the type `Foo<PhantomPinned>`
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/cfg_attr-unpin.rs:20:5
|
15 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
20 | is_unpin::<Bar<PhantomPinned>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Bar<'_, std::marker::PhantomPinned>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Bar<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `__Bar<'_, std::marker::PhantomPinned>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `Bar<std::marker::PhantomPinned>`
= note: required because it appears within the type `__Bar<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Bar<PhantomPinned>`

2
third_party/rust/pin-project/tests/ui/cfg/packed_sneaky-span-issue-1.rs vendored
View File

@ -1,4 +1,4 @@
use auxiliary_macros::hidden_repr;
use auxiliary_macro::hidden_repr;
use pin_project::pin_project;
//~ ERROR may not be used on #[repr(packed)] types

6
third_party/rust/pin-project/tests/ui/cfg/packed_sneaky-span-issue-1.stderr vendored
View File

@ -1 +1,7 @@
error: #[pin_project] attribute may not be used on #[repr(packed)] types
--> $DIR/packed_sneaky-span-issue-1.rs:8:1
|
8 | #[hidden_repr(packed)]
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

2
third_party/rust/pin-project/tests/ui/cfg/packed_sneaky-span-issue-2.rs vendored
View File

@ -1,4 +1,4 @@
use auxiliary_macros::hidden_repr;
use auxiliary_macro::hidden_repr;
use pin_project::pin_project;
//~ ERROR may not be used on #[repr(packed)] types

6
third_party/rust/pin-project/tests/ui/cfg/packed_sneaky-span-issue-2.stderr vendored
View File

@ -1 +1,7 @@
error: #[pin_project] attribute may not be used on #[repr(packed)] types
--> $DIR/packed_sneaky-span-issue-2.rs:8:1
|
8 | #[hidden_repr(packed)]
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

2
third_party/rust/pin-project/tests/ui/cfg/packed_sneaky.rs vendored
View File

@ -1,4 +1,4 @@
use auxiliary_macros::hidden_repr_cfg_not_any;
use auxiliary_macro::hidden_repr_cfg_not_any;
use pin_project::pin_project;
// `#[hidden_repr_cfg_not_any(packed)]` generates `#[cfg_attr(not(any()), repr(packed))]`.

8
third_party/rust/pin-project/tests/ui/cfg/proper_unpin.stderr vendored
View File

@ -1,11 +1,11 @@
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/proper_unpin.rs:27:5
|
22 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
27 | is_unpin::<Bar<PhantomPinned>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Bar<'_, std::marker::PhantomPinned>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Bar<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `__Bar<'_, std::marker::PhantomPinned>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `Bar<std::marker::PhantomPinned>`
= note: required because it appears within the type `__Bar<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Bar<PhantomPinned>`

8
third_party/rust/pin-project/tests/ui/cfg/unsupported.stderr vendored
View File

@ -1 +1,9 @@
error: #[pin_project] attribute may not be used on structs with zero fields
--> $DIR/unsupported.rs:7:1
|
7 | / struct Struct {
8 | | #[cfg(any())]
9 | | #[pin]
10 | | f: u8,
11 | | }
| |_^

40
third_party/rust/pin-project/tests/ui/not_unpin/assert-not-unpin.rs vendored Normal file
View File

@ -0,0 +1,40 @@
use pin_project::pin_project;
use std::marker::PhantomPinned;
struct Inner<T> {
val: T,
}
#[pin_project(!Unpin)]
struct Foo<T, U> {
#[pin]
inner: Inner<T>,
other: U,
}
#[pin_project(!Unpin)]
struct TrivialBounds {
#[pin]
field1: PhantomPinned,
}
#[pin_project(!Unpin)]
struct Bar<'a, T, U> {
#[pin]
inner: &'a mut Inner<T>,
other: U,
}
fn is_unpin<T: Unpin>() {}
fn main() {
is_unpin::<Foo<(), ()>>(); //~ ERROR E0277
is_unpin::<Foo<PhantomPinned, ()>>(); //~ ERROR E0277
is_unpin::<Foo<(), PhantomPinned>>(); //~ ERROR E0277
is_unpin::<Foo<PhantomPinned, PhantomPinned>>(); //~ ERROR E0277
is_unpin::<TrivialBounds>(); //~ ERROR E0277
is_unpin::<Bar<'_, (), ()>>(); //~ ERROR E0277
is_unpin::<Bar<'_, PhantomPinned, PhantomPinned>>(); //~ ERROR E0277
}

83
third_party/rust/pin-project/tests/ui/not_unpin/assert-not-unpin.stderr vendored Normal file
View File

@ -0,0 +1,83 @@
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/assert-not-unpin.rs:31:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
31 | is_unpin::<Foo<(), ()>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^ within `Wrapper<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Wrapper<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Foo<(), ()>`
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/assert-not-unpin.rs:32:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
32 | is_unpin::<Foo<PhantomPinned, ()>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `Wrapper<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Wrapper<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Foo<PhantomPinned, ()>`
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/assert-not-unpin.rs:33:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
33 | is_unpin::<Foo<(), PhantomPinned>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `Wrapper<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Wrapper<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Foo<(), PhantomPinned>`
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/assert-not-unpin.rs:34:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
34 | is_unpin::<Foo<PhantomPinned, PhantomPinned>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `Wrapper<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Wrapper<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Foo<PhantomPinned, PhantomPinned>`
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/assert-not-unpin.rs:36:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
36 | is_unpin::<TrivialBounds>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^ within `Wrapper<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Wrapper<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `TrivialBounds`
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/assert-not-unpin.rs:38:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
38 | is_unpin::<Bar<'_, (), ()>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `Wrapper<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Wrapper<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Bar<'_, (), ()>`
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/assert-not-unpin.rs:39:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
39 | is_unpin::<Bar<'_, PhantomPinned, PhantomPinned>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `Wrapper<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Wrapper<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Bar<'_, PhantomPinned, PhantomPinned>`

30
third_party/rust/pin-project/tests/ui/not_unpin/conflict-unpin.rs vendored Normal file
View File

@ -0,0 +1,30 @@
use pin_project::pin_project;
#[pin_project(!Unpin)] //~ ERROR E0119
struct Foo<T, U> {
#[pin]
future: T,
field: U,
}
impl<T, U> Unpin for Foo<T, U> where T: Unpin {}
#[pin_project(!Unpin)] //~ ERROR E0119
struct Bar<T, U> {
#[pin]
future: T,
field: U,
}
impl<T, U> Unpin for Bar<T, U> {}
#[pin_project(!Unpin)] //~ ERROR E0119
struct Baz<T, U> {
#[pin]
future: T,
field: U,
}
impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {}
fn main() {}

26
third_party/rust/pin-project/tests/ui/not_unpin/conflict-unpin.stderr vendored Normal file
View File

@ -0,0 +1,26 @@
error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Foo<_, _>`:
--> $DIR/conflict-unpin.rs:3:15
|
3 | #[pin_project(!Unpin)] //~ ERROR E0119
| ^^^^^^ conflicting implementation for `Foo<_, _>`
...
10 | impl<T, U> Unpin for Foo<T, U> where T: Unpin {}
| --------------------------------------------- first implementation here
error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Bar<_, _>`:
--> $DIR/conflict-unpin.rs:12:15
|
12 | #[pin_project(!Unpin)] //~ ERROR E0119
| ^^^^^^ conflicting implementation for `Bar<_, _>`
...
19 | impl<T, U> Unpin for Bar<T, U> {}
| ------------------------------ first implementation here
error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Baz<_, _>`:
--> $DIR/conflict-unpin.rs:21:15
|
21 | #[pin_project(!Unpin)] //~ ERROR E0119
| ^^^^^^ conflicting implementation for `Baz<_, _>`
...
28 | impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {}
| -------------------------------------------- first implementation here

30
third_party/rust/pin-project/tests/ui/not_unpin/impl-unsafe-unpin.rs vendored Normal file
View File

@ -0,0 +1,30 @@
use pin_project::{pin_project, UnsafeUnpin};
#[pin_project(!Unpin)] //~ ERROR E0119
struct Foo<T, U> {
#[pin]
future: T,
field: U,
}
unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
#[pin_project(!Unpin)] //~ ERROR E0119
struct Bar<T, U> {
#[pin]
future: T,
field: U,
}
unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
#[pin_project(!Unpin)] //~ ERROR E0119
struct Baz<T, U> {
#[pin]
future: T,
field: U,
}
unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
fn main() {}

32
third_party/rust/pin-project/tests/ui/not_unpin/impl-unsafe-unpin.stderr vendored Normal file
View File

@ -0,0 +1,32 @@
error[E0119]: conflicting implementations of trait `pin_project::UnsafeUnpin` for type `Foo<_, _>`:
--> $DIR/impl-unsafe-unpin.rs:3:1
|
3 | #[pin_project(!Unpin)] //~ ERROR E0119
| ^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `Foo<_, _>`
...
10 | unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
| ---------------------------------------------------------- first implementation here
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0119]: conflicting implementations of trait `pin_project::UnsafeUnpin` for type `Bar<_, _>`:
--> $DIR/impl-unsafe-unpin.rs:12:1
|
12 | #[pin_project(!Unpin)] //~ ERROR E0119
| ^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
...
19 | unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
| ------------------------------------------- first implementation here
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0119]: conflicting implementations of trait `pin_project::UnsafeUnpin` for type `Baz<_, _>`:
--> $DIR/impl-unsafe-unpin.rs:21:1
|
21 | #[pin_project(!Unpin)] //~ ERROR E0119
| ^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `Baz<_, _>`
...
28 | unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
| --------------------------------------------------------- first implementation here
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)

6
third_party/rust/pin-project/tests/ui/pin_project/add-attr-to-struct.rs vendored
View File

@ -1,15 +1,15 @@
use auxiliary_macros::add_attr;
use auxiliary_macro::add_pin_attr;
use pin_project::pin_project;
use std::marker::PhantomPinned;
#[pin_project]
#[add_attr(struct)] //~ ERROR duplicate #[pin] attribute
#[add_pin_attr(struct)] //~ ERROR duplicate #[pin] attribute
struct Foo {
#[pin]
field: PhantomPinned,
}
#[add_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
#[add_pin_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
#[pin_project]
struct Bar {
#[pin]

8
third_party/rust/pin-project/tests/ui/pin_project/add-attr-to-struct.stderr vendored
View File

@ -1,15 +1,15 @@
error: duplicate #[pin] attribute
--> $DIR/add-attr-to-struct.rs:6:1
|
6 | #[add_attr(struct)] //~ ERROR duplicate #[pin] attribute
| ^^^^^^^^^^^^^^^^^^^
6 | #[add_pin_attr(struct)] //~ ERROR duplicate #[pin] attribute
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: #[pin] attribute may only be used on fields of structs or variants
--> $DIR/add-attr-to-struct.rs:12:1
|
12 | #[add_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
| ^^^^^^^^^^^^^^^^^^^
12 | #[add_pin_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

2
third_party/rust/pin-project/tests/ui/pin_project/add-pinned-field.rs vendored
View File

@ -1,4 +1,4 @@
use auxiliary_macros::add_pinned_field;
use auxiliary_macro::add_pinned_field;
use pin_project::pin_project;
fn is_unpin<T: Unpin>() {}

12
third_party/rust/pin-project/tests/ui/pin_project/add-pinned-field.stderr vendored
View File

@ -1,23 +1,23 @@
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/add-pinned-field.rs:21:5
|
4 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
21 | is_unpin::<Foo>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^ within `__Foo<'_>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^ within `__Foo<'_>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `__Foo<'_>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `Foo`
= note: required because of the requirements on the impl of `Unpin` for `Foo`
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/add-pinned-field.rs:22:5
|
4 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
22 | is_unpin::<Bar>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^ within `__Bar<'_>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^ within `__Bar<'_>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `__Bar<'_>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `Bar`
= note: required because of the requirements on the impl of `Unpin` for `Bar`

8
third_party/rust/pin-project/tests/ui/pin_project/conflict-drop.stderr vendored
View File

@ -1,4 +1,4 @@
error[E0119]: conflicting implementations of trait `FooMustNotImplDrop` for type `Foo<_, _>`:
error[E0119]: conflicting implementations of trait `_::FooMustNotImplDrop` for type `Foo<_, _>`:
--> $DIR/conflict-drop.rs:4:1
|
4 | #[pin_project] //~ ERROR E0119
@ -10,12 +10,10 @@ error[E0119]: conflicting implementations of trait `FooMustNotImplDrop` for type
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0119]: conflicting implementations of trait `std::ops::Drop` for type `Bar<_, _>`:
--> $DIR/conflict-drop.rs:15:1
--> $DIR/conflict-drop.rs:15:15
|
15 | #[pin_project(PinnedDrop)] //~ ERROR E0119
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
| ^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
...
27 | impl<T, U> Drop for Bar<T, U> {
| ----------------------------- first implementation here
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)

27
third_party/rust/pin-project/tests/ui/pin_project/duplicate-argument.rs vendored
View File

@ -1,27 +0,0 @@
use pin_project::pin_project;
#[pin_project(UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
struct UnsafeUnpin<T> {
#[pin]
pinned: T,
}
#[pin_project(PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
struct PinnedDrop<T> {
#[pin]
pinned: T,
}
#[pin_project(PinnedDrop, UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
struct Duplicate3<T> {
#[pin]
pinned: T,
}
#[pin_project(PinnedDrop, UnsafeUnpin, PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
struct Duplicate4<T> {
#[pin]
pinned: T,
}
fn main() {}

23
third_party/rust/pin-project/tests/ui/pin_project/duplicate-argument.stderr vendored
View File

@ -1,23 +0,0 @@
error: duplicate `UnsafeUnpin` argument
--> $DIR/duplicate-argument.rs:3:28
|
3 | #[pin_project(UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
| ^^^^^^^^^^^
error: duplicate `PinnedDrop` argument
--> $DIR/duplicate-argument.rs:9:27
|
9 | #[pin_project(PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
| ^^^^^^^^^^
error: duplicate `UnsafeUnpin` argument
--> $DIR/duplicate-argument.rs:15:40
|
15 | #[pin_project(PinnedDrop, UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
| ^^^^^^^^^^^
error: duplicate `PinnedDrop` argument
--> $DIR/duplicate-argument.rs:21:40
|
21 | #[pin_project(PinnedDrop, UnsafeUnpin, PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
| ^^^^^^^^^^

30
third_party/rust/pin-project/tests/ui/pin_project/impl-unsafe-unpin.rs vendored Normal file
View File

@ -0,0 +1,30 @@
use pin_project::{pin_project, UnsafeUnpin};
#[pin_project] //~ ERROR E0119
struct Foo<T, U> {
#[pin]
future: T,
field: U,
}
unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
#[pin_project] //~ ERROR E0119
struct Bar<T, U> {
#[pin]
future: T,
field: U,
}
unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
#[pin_project] //~ ERROR E0119
struct Baz<T, U> {
#[pin]
future: T,
field: U,
}
unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
fn main() {}

32
third_party/rust/pin-project/tests/ui/pin_project/impl-unsafe-unpin.stderr vendored Normal file
View File

@ -0,0 +1,32 @@
error[E0119]: conflicting implementations of trait `pin_project::UnsafeUnpin` for type `Foo<_, _>`:
--> $DIR/impl-unsafe-unpin.rs:3:1
|
3 | #[pin_project] //~ ERROR E0119
| ^^^^^^^^^^^^^^ conflicting implementation for `Foo<_, _>`
...
10 | unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
| ---------------------------------------------------------- first implementation here
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0119]: conflicting implementations of trait `pin_project::UnsafeUnpin` for type `Bar<_, _>`:
--> $DIR/impl-unsafe-unpin.rs:12:1
|
12 | #[pin_project] //~ ERROR E0119
| ^^^^^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
...
19 | unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
| ------------------------------------------- first implementation here
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0119]: conflicting implementations of trait `pin_project::UnsafeUnpin` for type `Baz<_, _>`:
--> $DIR/impl-unsafe-unpin.rs:21:1
|
21 | #[pin_project] //~ ERROR E0119
| ^^^^^^^^^^^^^^ conflicting implementation for `Baz<_, _>`
...
28 | unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
| --------------------------------------------------------- first implementation here
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)

301
third_party/rust/pin-project/tests/ui/pin_project/invalid.rs vendored
View File

@ -1,56 +1,275 @@
use pin_project::pin_project;
mod pin_argument {
use pin_project::pin_project;
#[pin_project]
struct A<T> {
#[pin()] //~ ERROR unexpected token
pinned: T,
#[pin_project]
struct Struct {
#[pin()] //~ ERROR unexpected token
field: (),
}
#[pin_project]
struct TupleStruct(#[pin(foo)] ()); //~ ERROR unexpected token
#[pin_project]
enum EnumTuple {
V(#[pin(foo)] ()), //~ ERROR unexpected token
}
#[pin_project]
enum EnumStruct {
V {
#[pin(foo)] //~ ERROR unexpected token
field: (),
},
}
}
#[pin_project]
struct B<T>(#[pin(foo)] T); //~ ERROR unexpected token
mod pin_attribute {
use pin_project::pin_project;
#[pin_project]
enum C<T> {
A(#[pin(foo)] T), //~ ERROR unexpected token
#[pin_project]
struct DuplicateStruct {
#[pin]
#[pin] //~ ERROR duplicate #[pin] attribute
field: (),
}
#[pin_project]
struct DuplicateTupleStruct(
#[pin]
#[pin]
(),
//~^^ ERROR duplicate #[pin] attribute
);
#[pin_project]
enum DuplicateEnumTuple {
V(
#[pin]
#[pin]
(),
//~^^ ERROR duplicate #[pin] attribute
),
}
#[pin_project]
enum DuplicateEnumStruct {
V {
#[pin]
#[pin] //~ ERROR duplicate #[pin] attribute
field: (),
},
}
}
#[pin_project]
enum D<T> {
A {
#[pin(foo)] //~ ERROR unexpected token
pinned: T,
},
}
mod pin_item {
use pin_project::pin_project;
#[pin_project(UnsafeUnpin,,)] //~ ERROR expected identifier
struct E<T> {
#[pin]
pinned: T,
}
#[pin_project(Foo)] //~ ERROR unexpected argument
struct F<T> {
#[pin]
pinned: T,
}
#[pin_project]
enum G<T> {
#[pin_project]
#[pin] //~ ERROR may only be used on fields of structs or variants
A(T),
struct Struct {
#[pin]
field: (),
}
#[pin_project]
enum Variant {
#[pin] //~ ERROR may only be used on fields of structs or variants
V(()),
}
#[pin_project]
#[pin] //~ ERROR may only be used on fields of structs or variants
enum Enum {
V(()),
}
}
#[pin_project]
#[pin] //~ ERROR may only be used on fields of structs or variants
enum H<T> {
A(T),
mod pin_project_argument {
use pin_project::pin_project;
#[pin_project(UnsafeUnpin,,)] //~ ERROR expected identifier
struct Unexpected1(#[pin] ());
#[pin_project(Foo)] //~ ERROR unexpected argument
struct Unexpected2(#[pin] ());
#[pin_project(,UnsafeUnpin)] //~ ERROR expected identifier
struct Unexpected3(#[pin] ());
#[pin_project()] // Ok
struct Unexpected4(#[pin] ());
#[pin_project(PinnedDrop PinnedDrop)] //~ ERROR expected `,`
struct Unexpected5(#[pin] ());
#[pin_project(PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
struct DuplicatePinnedDrop(#[pin] ());
#[pin_project(Replace, Replace)] //~ ERROR duplicate `Replace` argument
struct DuplicateReplace(#[pin] ());
#[pin_project(UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
struct DuplicateUnsafeUnpin(#[pin] ());
#[pin_project(!Unpin, !Unpin)] //~ ERROR duplicate `!Unpin` argument
struct DuplicateNotUnpin(#[pin] ());
#[pin_project(PinnedDrop, UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
struct Duplicate3(#[pin] ());
#[pin_project(PinnedDrop, UnsafeUnpin, PinnedDrop, UnsafeUnpin)] //~ ERROR duplicate `PinnedDrop` argument
struct Duplicate4(#[pin] ());
#[pin_project(project = A, project = B)] //~ ERROR duplicate `project` argument
struct DuplicateProject(#[pin] ());
#[pin_project(project = A, project_ref = A, project = B)] //~ ERROR duplicate `project` argument
struct DuplicateProject2(#[pin] ());
#[pin_project(project_ref = A, project_ref = B)] //~ ERROR duplicate `project_ref` argument
struct DuplicateProjectRef(#[pin] ());
#[pin_project(project_replace = A, project_replace = B)] //~ ERROR duplicate `project_replace` argument
struct DuplicateProjectReplace1(#[pin] ());
#[pin_project(project_replace, project_replace = B)] //~ ERROR duplicate `project_replace` argument
struct DuplicateProjectReplace2(#[pin] ());
#[pin_project(project_replace = A, project_replace)] //~ ERROR duplicate `project_replace` argument
struct DuplicateProjectReplace3(#[pin] ());
#[pin_project(project_replace = A)] // Ok
struct ProjectReplaceWithoutReplace(#[pin] ());
#[pin_project(PinnedDrop, Replace)] //~ ERROR arguments `PinnedDrop` and `Replace` are mutually exclusive
struct PinnedDropWithReplace1(#[pin] ());
#[pin_project(Replace, UnsafeUnpin, PinnedDrop)] //~ ERROR arguments `PinnedDrop` and `Replace` are mutually exclusive
struct PinnedDropWithReplace2(#[pin] ());
#[pin_project(PinnedDrop, project_replace)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
struct PinnedDropWithProjectReplace1(#[pin] ());
#[pin_project(project_replace, UnsafeUnpin, PinnedDrop)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
struct PinnedDropWithProjectReplace2(#[pin] ());
#[pin_project(project_replace, Replace)] // Ok
struct ProjectReplaceWithReplace1(#[pin] ());
#[pin_project(project_replace = B, Replace)] // Ok
struct ProjectReplaceWithReplace2(#[pin] ());
#[pin_project(UnsafeUnpin, !Unpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
struct UnsafeUnpinWithNotUnpin1(#[pin] ());
#[pin_project(!Unpin, PinnedDrop, UnsafeUnpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
struct UnsafeUnpinWithNotUnpin2(#[pin] ());
#[pin_project(!)] //~ ERROR expected `!Unpin`, found `!`
struct NotUnpin1(#[pin] ());
#[pin_project(Unpin)] //~ ERROR unexpected argument
struct NotUnpin2(#[pin] ());
#[pin_project(project)] //~ ERROR expected `project = <identifier>`, found `project`
struct Project1(#[pin] ());
#[pin_project(project = )] //~ ERROR expected `project = <identifier>`, found `project =`
struct Project2(#[pin] ());
#[pin_project(project = !)] //~ ERROR expected identifier
struct Project3(#[pin] ());
#[pin_project(project_ref)] //~ ERROR expected `project_ref = <identifier>`, found `project_ref`
struct ProjectRef1(#[pin] ());
#[pin_project(project_ref = )] //~ ERROR expected `project_ref = <identifier>`, found `project_ref =`
struct ProjectRef2(#[pin] ());
#[pin_project(project_ref = !)] //~ ERROR expected identifier
struct ProjectRef3(#[pin] ());
#[pin_project(project_replace)] // Ok
struct ProjectReplace1(#[pin] ());
#[pin_project(project_replace = )] //~ ERROR expected `project_replace = <identifier>`, found `project_replace =`
struct ProjectReplace2(#[pin] ());
#[pin_project(project_replace = !)] //~ ERROR expected identifier
struct ProjectReplace3(#[pin] ());
}
#[pin_project]
struct I<T> {
#[pin]
#[pin] //~ ERROR duplicate #[pin] attribute
pinned: T,
mod pin_project_conflict_naming {
use pin_project::pin_project;
#[pin_project(project = A, project_ref = A)] //~ ERROR name `A` is already specified by `project` argument
struct ProjAndProjRef(#[pin] ());
#[pin_project(project = A, project_replace = A)] //~ ERROR name `A` is already specified by `project` argument
struct ProjAndProjOwn(#[pin] ());
#[pin_project(project_ref = A, project_replace = A)] //~ ERROR name `A` is already specified by `project_ref` argument
struct ProjRefAndProjOwn(#[pin] ());
}
mod pin_project_attribute {
use pin_project::pin_project;
#[pin_project]
#[pin_project] //~ ERROR duplicate #[pin_project] attribute
struct Duplicate(#[pin] ());
}
mod pin_project_item {
use pin_project::pin_project;
#[pin_project]
struct Struct {} //~ ERROR may not be used on structs with zero fields
#[pin_project]
struct TupleStruct(); //~ ERROR may not be used on structs with zero fields
#[pin_project]
struct UnitStruct; //~ ERROR may not be used on structs with zero fields
#[pin_project]
enum EnumEmpty {} //~ ERROR may not be used on enums without variants
#[pin_project]
enum EnumDiscriminant {
V = 2, //~ ERROR may not be used on enums with discriminants
}
#[pin_project]
enum EnumZeroFields {
Unit, //~ ERROR may not be used on enums with zero fields
Tuple(),
Struct {},
}
#[pin_project]
union Union {
//~^ ERROR may only be used on structs or enums
f: (),
}
}
// #[repr(packed)] is always detected first, even on unsupported structs.
mod pin_project_item_packed {
use pin_project::pin_project;
#[pin_project]
#[repr(packed)]
struct Struct {} //~ ERROR may not be used on #[repr(packed)] types
#[pin_project]
#[repr(packed)]
struct TupleStruct(); //~ ERROR may not be used on #[repr(packed)] types
#[pin_project]
#[repr(packed)]
struct UnitStruct; //~ ERROR may not be used on #[repr(packed)] types
}
fn main() {}

375
third_party/rust/pin-project/tests/ui/pin_project/invalid.stderr vendored
View File

@ -1,53 +1,346 @@
error: unexpected token: ()
--> $DIR/invalid.rs:5:10
--> $DIR/invalid.rs:6:14
|
5 | #[pin()] //~ ERROR unexpected token
| ^^
6 | #[pin()] //~ ERROR unexpected token
| ^^
error: unexpected token: (foo)
--> $DIR/invalid.rs:10:18
--> $DIR/invalid.rs:11:29
|
10 | struct B<T>(#[pin(foo)] T); //~ ERROR unexpected token
11 | struct TupleStruct(#[pin(foo)] ()); //~ ERROR unexpected token
| ^^^^^
error: unexpected token: (foo)
--> $DIR/invalid.rs:15:16
|
15 | V(#[pin(foo)] ()), //~ ERROR unexpected token
| ^^^^^
error: unexpected token: (foo)
--> $DIR/invalid.rs:21:18
|
21 | #[pin(foo)] //~ ERROR unexpected token
| ^^^^^
error: unexpected token: (foo)
--> $DIR/invalid.rs:14:12
error: duplicate #[pin] attribute
--> $DIR/invalid.rs:33:9
|
14 | A(#[pin(foo)] T), //~ ERROR unexpected token
| ^^^^^
error: unexpected token: (foo)
--> $DIR/invalid.rs:20:14
|
20 | #[pin(foo)] //~ ERROR unexpected token
| ^^^^^
error: expected identifier
--> $DIR/invalid.rs:25:27
|
25 | #[pin_project(UnsafeUnpin,,)] //~ ERROR expected identifier
| ^
error: unexpected argument: Foo
--> $DIR/invalid.rs:31:15
|
31 | #[pin_project(Foo)] //~ ERROR unexpected argument
| ^^^
error: #[pin] attribute may only be used on fields of structs or variants
--> $DIR/invalid.rs:39:5
|
39 | #[pin] //~ ERROR may only be used on fields of structs or variants
| ^^^^^^
error: #[pin] attribute may only be used on fields of structs or variants
--> $DIR/invalid.rs:44:1
|
44 | #[pin] //~ ERROR may only be used on fields of structs or variants
| ^^^^^^
33 | #[pin] //~ ERROR duplicate #[pin] attribute
| ^^^^^^
error: duplicate #[pin] attribute
--> $DIR/invalid.rs:52:5
--> $DIR/invalid.rs:40:9
|
52 | #[pin] //~ ERROR duplicate #[pin] attribute
40 | #[pin]
| ^^^^^^
error: duplicate #[pin] attribute
--> $DIR/invalid.rs:49:13
|
49 | #[pin]
| ^^^^^^
error: duplicate #[pin] attribute
--> $DIR/invalid.rs:59:13
|
59 | #[pin] //~ ERROR duplicate #[pin] attribute
| ^^^^^^
error: #[pin] attribute may only be used on fields of structs or variants
--> $DIR/invalid.rs:69:5
|
69 | #[pin] //~ ERROR may only be used on fields of structs or variants
| ^^^^^^
error: #[pin] attribute may only be used on fields of structs or variants
--> $DIR/invalid.rs:77:9
|
77 | #[pin] //~ ERROR may only be used on fields of structs or variants
| ^^^^^^
error: #[pin] attribute may only be used on fields of structs or variants
--> $DIR/invalid.rs:82:5
|
82 | #[pin] //~ ERROR may only be used on fields of structs or variants
| ^^^^^^
error: expected identifier
--> $DIR/invalid.rs:91:31
|
91 | #[pin_project(UnsafeUnpin,,)] //~ ERROR expected identifier
| ^
error: unexpected argument: Foo
--> $DIR/invalid.rs:94:19
|
94 | #[pin_project(Foo)] //~ ERROR unexpected argument
| ^^^
error: expected identifier
--> $DIR/invalid.rs:97:19
|
97 | #[pin_project(,UnsafeUnpin)] //~ ERROR expected identifier
| ^
error: expected `,`
--> $DIR/invalid.rs:103:30
|
103 | #[pin_project(PinnedDrop PinnedDrop)] //~ ERROR expected `,`
| ^^^^^^^^^^
error: duplicate `PinnedDrop` argument
--> $DIR/invalid.rs:106:31
|
106 | #[pin_project(PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
| ^^^^^^^^^^
error: duplicate `Replace` argument
--> $DIR/invalid.rs:109:28
|
109 | #[pin_project(Replace, Replace)] //~ ERROR duplicate `Replace` argument
| ^^^^^^^
error: duplicate `UnsafeUnpin` argument
--> $DIR/invalid.rs:112:32
|
112 | #[pin_project(UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
| ^^^^^^^^^^^
error: duplicate `!Unpin` argument
--> $DIR/invalid.rs:115:27
|
115 | #[pin_project(!Unpin, !Unpin)] //~ ERROR duplicate `!Unpin` argument
| ^^^^^^
error: duplicate `UnsafeUnpin` argument
--> $DIR/invalid.rs:118:44
|
118 | #[pin_project(PinnedDrop, UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
| ^^^^^^^^^^^
error: duplicate `PinnedDrop` argument
--> $DIR/invalid.rs:121:44
|
121 | #[pin_project(PinnedDrop, UnsafeUnpin, PinnedDrop, UnsafeUnpin)] //~ ERROR duplicate `PinnedDrop` argument
| ^^^^^^^^^^
error: duplicate `project` argument
--> $DIR/invalid.rs:124:32
|
124 | #[pin_project(project = A, project = B)] //~ ERROR duplicate `project` argument
| ^^^^^^^^^^^
error: duplicate `project` argument
--> $DIR/invalid.rs:127:49
|
127 | #[pin_project(project = A, project_ref = A, project = B)] //~ ERROR duplicate `project` argument
| ^^^^^^^^^^^
error: duplicate `project_ref` argument
--> $DIR/invalid.rs:130:36
|
130 | #[pin_project(project_ref = A, project_ref = B)] //~ ERROR duplicate `project_ref` argument
| ^^^^^^^^^^^^^^^
error: duplicate `project_replace` argument
--> $DIR/invalid.rs:133:40
|
133 | #[pin_project(project_replace = A, project_replace = B)] //~ ERROR duplicate `project_replace` argument
| ^^^^^^^^^^^^^^^^^^^
error: duplicate `project_replace` argument
--> $DIR/invalid.rs:136:36
|
136 | #[pin_project(project_replace, project_replace = B)] //~ ERROR duplicate `project_replace` argument
| ^^^^^^^^^^^^^^^^^^^
error: duplicate `project_replace` argument
--> $DIR/invalid.rs:139:40
|
139 | #[pin_project(project_replace = A, project_replace)] //~ ERROR duplicate `project_replace` argument
| ^^^^^^^^^^^^^^^
error: arguments `PinnedDrop` and `Replace` are mutually exclusive
--> $DIR/invalid.rs:145:19
|
145 | #[pin_project(PinnedDrop, Replace)] //~ ERROR arguments `PinnedDrop` and `Replace` are mutually exclusive
| ^^^^^^^^^^
error: arguments `PinnedDrop` and `Replace` are mutually exclusive
--> $DIR/invalid.rs:148:41
|
148 | #[pin_project(Replace, UnsafeUnpin, PinnedDrop)] //~ ERROR arguments `PinnedDrop` and `Replace` are mutually exclusive
| ^^^^^^^^^^
error: arguments `PinnedDrop` and `project_replace` are mutually exclusive
--> $DIR/invalid.rs:151:19
|
151 | #[pin_project(PinnedDrop, project_replace)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
| ^^^^^^^^^^
error: arguments `PinnedDrop` and `project_replace` are mutually exclusive
--> $DIR/invalid.rs:154:49
|
154 | #[pin_project(project_replace, UnsafeUnpin, PinnedDrop)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
| ^^^^^^^^^^
error: arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
--> $DIR/invalid.rs:163:19
|
163 | #[pin_project(UnsafeUnpin, !Unpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
| ^^^^^^^^^^^
error: arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
--> $DIR/invalid.rs:166:39
|
166 | #[pin_project(!Unpin, PinnedDrop, UnsafeUnpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
| ^^^^^^^^^^^
error: expected `!Unpin`, found `!`
--> $DIR/invalid.rs:169:19
|
169 | #[pin_project(!)] //~ ERROR expected `!Unpin`, found `!`
| ^
error: unexpected argument: Unpin
--> $DIR/invalid.rs:172:19
|
172 | #[pin_project(Unpin)] //~ ERROR unexpected argument
| ^^^^^
error: expected `project = <identifier>`, found `project`
--> $DIR/invalid.rs:175:19
|
175 | #[pin_project(project)] //~ ERROR expected `project = <identifier>`, found `project`
| ^^^^^^^
error: expected `project = <identifier>`, found `project =`
--> $DIR/invalid.rs:178:19
|
178 | #[pin_project(project = )] //~ ERROR expected `project = <identifier>`, found `project =`
| ^^^^^^^^^
error: expected identifier
--> $DIR/invalid.rs:181:29
|
181 | #[pin_project(project = !)] //~ ERROR expected identifier
| ^
error: expected `project_ref = <identifier>`, found `project_ref`
--> $DIR/invalid.rs:184:19
|
184 | #[pin_project(project_ref)] //~ ERROR expected `project_ref = <identifier>`, found `project_ref`
| ^^^^^^^^^^^
error: expected `project_ref = <identifier>`, found `project_ref =`
--> $DIR/invalid.rs:187:19
|
187 | #[pin_project(project_ref = )] //~ ERROR expected `project_ref = <identifier>`, found `project_ref =`
| ^^^^^^^^^^^^^
error: expected identifier
--> $DIR/invalid.rs:190:33
|
190 | #[pin_project(project_ref = !)] //~ ERROR expected identifier
| ^
error: expected `project_replace = <identifier>`, found `project_replace =`
--> $DIR/invalid.rs:196:19
|
196 | #[pin_project(project_replace = )] //~ ERROR expected `project_replace = <identifier>`, found `project_replace =`
| ^^^^^^^^^^^^^^^^^
error: expected identifier
--> $DIR/invalid.rs:199:37
|
199 | #[pin_project(project_replace = !)] //~ ERROR expected identifier
| ^
error: name `A` is already specified by `project` argument
--> $DIR/invalid.rs:206:46
|
206 | #[pin_project(project = A, project_ref = A)] //~ ERROR name `A` is already specified by `project` argument
| ^
error: name `A` is already specified by `project` argument
--> $DIR/invalid.rs:209:50
|
209 | #[pin_project(project = A, project_replace = A)] //~ ERROR name `A` is already specified by `project` argument
| ^
error: name `A` is already specified by `project_ref` argument
--> $DIR/invalid.rs:212:54
|
212 | #[pin_project(project_ref = A, project_replace = A)] //~ ERROR name `A` is already specified by `project_ref` argument
| ^
error: duplicate #[pin_project] attribute
--> $DIR/invalid.rs:220:5
|
220 | #[pin_project] //~ ERROR duplicate #[pin_project] attribute
| ^^^^^^^^^^^^^^
error: #[pin_project] attribute may not be used on structs with zero fields
--> $DIR/invalid.rs:228:19
|
228 | struct Struct {} //~ ERROR may not be used on structs with zero fields
| ^^
error: #[pin_project] attribute may not be used on structs with zero fields
--> $DIR/invalid.rs:231:23
|
231 | struct TupleStruct(); //~ ERROR may not be used on structs with zero fields
| ^^
error: #[pin_project] attribute may not be used on structs with zero fields
--> $DIR/invalid.rs:234:12
|
234 | struct UnitStruct; //~ ERROR may not be used on structs with zero fields
| ^^^^^^^^^^
error: #[pin_project] attribute may not be used on enums without variants
--> $DIR/invalid.rs:237:20
|
237 | enum EnumEmpty {} //~ ERROR may not be used on enums without variants
| ^^
error: #[pin_project] attribute may not be used on enums with discriminants
--> $DIR/invalid.rs:241:13
|
241 | V = 2, //~ ERROR may not be used on enums with discriminants
| ^
error: #[pin_project] attribute may not be used on enums with zero fields
--> $DIR/invalid.rs:246:9
|
246 | / Unit, //~ ERROR may not be used on enums with zero fields
247 | | Tuple(),
248 | | Struct {},
| |__________________^
error: #[pin_project] attribute may only be used on structs or enums
--> $DIR/invalid.rs:252:5
|
252 | / union Union {
253 | | //~^ ERROR may only be used on structs or enums
254 | | f: (),
255 | | }
| |_____^
error: #[pin_project] attribute may not be used on #[repr(packed)] types
--> $DIR/invalid.rs:263:12
|
263 | #[repr(packed)]
| ^^^^^^
error: #[pin_project] attribute may not be used on #[repr(packed)] types
--> $DIR/invalid.rs:267:12
|
267 | #[repr(packed)]
| ^^^^^^
error: #[pin_project] attribute may not be used on #[repr(packed)] types
--> $DIR/invalid.rs:271:12
|
271 | #[repr(packed)]
| ^^^^^^

8
third_party/rust/pin-project/tests/ui/pin_project/overlapping_unpin_struct.stderr vendored
View File

@ -1,11 +1,11 @@
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/overlapping_unpin_struct.rs:17:5
|
14 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
17 | is_unpin::<Foo<PhantomPinned>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Foo<'_, std::marker::PhantomPinned>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `_::__Foo<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `__Foo<'_, std::marker::PhantomPinned>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `Foo<std::marker::PhantomPinned>`
= note: required because it appears within the type `_::__Foo<'_, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Foo<PhantomPinned>`

20
third_party/rust/pin-project/tests/ui/pin_project/packed-enum.rs vendored Normal file
View File

@ -0,0 +1,20 @@
use pin_project::pin_project;
#[repr(packed)] //~ ERROR E0517
enum E1 {
V(()),
}
#[pin_project]
#[repr(packed)] //~ ERROR E0517
enum E2 {
V(()),
}
#[repr(packed)] //~ ERROR E0517
#[pin_project]
enum E3 {
V(()),
}
fn main() {}

30
third_party/rust/pin-project/tests/ui/pin_project/packed-enum.stderr vendored Normal file
View File

@ -0,0 +1,30 @@
error[E0517]: attribute should be applied to a struct or union
--> $DIR/packed-enum.rs:3:8
|
3 | #[repr(packed)] //~ ERROR E0517
| ^^^^^^
4 | / enum E1 {
5 | | V(()),
6 | | }
| |_- not a struct or union
error[E0517]: attribute should be applied to a struct or union
--> $DIR/packed-enum.rs:9:8
|
9 | #[repr(packed)] //~ ERROR E0517
| ^^^^^^
10 | / enum E2 {
11 | | V(()),
12 | | }
| |_- not a struct or union
error[E0517]: attribute should be applied to a struct or union
--> $DIR/packed-enum.rs:14:8
|
14 | #[repr(packed)] //~ ERROR E0517
| ^^^^^^
15 | #[pin_project]
16 | / enum E3 {
17 | | V(()),
18 | | }
| |_- not a struct or union

20
third_party/rust/pin-project/tests/ui/pin_project/packed-name-value.rs vendored Normal file
View File

@ -0,0 +1,20 @@
use pin_project::pin_project;
#[repr(packed = "")] //~ ERROR E0552
struct S1 {
f: (),
}
#[pin_project]
#[repr(packed = "")] //~ ERROR E0552
struct S2 {
f: (),
}
#[repr(packed = "")] //~ ERROR E0552
#[pin_project]
struct S3 {
f: (),
}
fn main() {}

17
third_party/rust/pin-project/tests/ui/pin_project/packed-name-value.stderr vendored Normal file
View File

@ -0,0 +1,17 @@
error[E0552]: unrecognized representation hint
--> $DIR/packed-name-value.rs:3:8
|
3 | #[repr(packed = "")] //~ ERROR E0552
| ^^^^^^^^^^^
error[E0552]: unrecognized representation hint
--> $DIR/packed-name-value.rs:9:8
|
9 | #[repr(packed = "")] //~ ERROR E0552
| ^^^^^^^^^^^
error[E0552]: unrecognized representation hint
--> $DIR/packed-name-value.rs:14:8
|
14 | #[repr(packed = "")] //~ ERROR E0552
| ^^^^^^^^^^^

20
third_party/rust/pin-project/tests/ui/pin_project/packed.rs vendored
View File

@ -2,24 +2,32 @@ use pin_project::pin_project;
#[pin_project]
#[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
struct A {
struct Packed1 {
#[pin]
field: u8,
f: u8,
}
// Test putting 'repr' before the 'pin_project' attribute
#[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
#[pin_project]
struct B {
struct Packed2 {
#[pin]
field: u8,
f: u8,
}
#[pin_project]
#[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
struct C {
struct PackedN1 {
#[pin]
field: u32,
f: u32,
}
// Test putting 'repr' before the 'pin_project' attribute
#[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
#[pin_project]
struct PackedN2 {
#[pin]
f: u32,
}
fn main() {}

6
third_party/rust/pin-project/tests/ui/pin_project/packed.stderr vendored
View File

@ -15,3 +15,9 @@ error: #[pin_project] attribute may not be used on #[repr(packed)] types
|
19 | #[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
| ^^^^^^^^^
error: #[pin_project] attribute may not be used on #[repr(packed)] types
--> $DIR/packed.rs:26:8
|
26 | #[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
| ^^^^^^^^^

2
third_party/rust/pin-project/tests/ui/pin_project/packed_sneaky-1.rs vendored
View File

@ -1,4 +1,4 @@
use auxiliary_macros::hidden_repr;
use auxiliary_macro::hidden_repr;
use pin_project::{pin_project, pinned_drop, UnsafeUnpin};
use std::pin::Pin;

2
third_party/rust/pin-project/tests/ui/pin_project/packed_sneaky-2.rs vendored
View File

@ -1,4 +1,4 @@
use auxiliary_macros::hidden_repr_macro;
use auxiliary_macro::hidden_repr_macro;
use pin_project::pin_project;
hidden_repr_macro! { //~ ERROR may not be used on #[repr(packed)] types

4
third_party/rust/pin-project/tests/ui/pin_project/private_in_public-enum.rs vendored
View File

@ -3,7 +3,7 @@
#![allow(private_in_public)]
pub enum PublicEnum {
Variant(PrivateEnum),
Variant(PrivateEnum), //~ ERROR E0446
}
enum PrivateEnum {
@ -12,7 +12,7 @@ enum PrivateEnum {
mod foo {
pub(crate) enum CrateEnum {
Variant(PrivateEnum),
Variant(PrivateEnum), //~ ERROR E0446
}
enum PrivateEnum {

8
third_party/rust/pin-project/tests/ui/pin_project/private_in_public-enum.stderr vendored
View File

@ -1,17 +1,17 @@
error[E0446]: private type `PrivateEnum` in public interface
--> $DIR/private_in_public-enum.rs:6:13
|
6 | Variant(PrivateEnum),
6 | Variant(PrivateEnum), //~ ERROR E0446
| ^^^^^^^^^^^ can't leak private type
...
9 | enum PrivateEnum {
| - `PrivateEnum` declared as private
| ---------------- `PrivateEnum` declared as private
error[E0446]: private type `foo::PrivateEnum` in public interface
--> $DIR/private_in_public-enum.rs:15:17
|
15 | Variant(PrivateEnum),
15 | Variant(PrivateEnum), //~ ERROR E0446
| ^^^^^^^^^^^ can't leak private type
...
18 | enum PrivateEnum {
| - `foo::PrivateEnum` declared as private
| ---------------- `foo::PrivateEnum` declared as private

11
third_party/rust/pin-project/tests/ui/pin_project/project_replace_unsized.rs vendored Normal file
View File

@ -0,0 +1,11 @@
use pin_project::pin_project;
#[pin_project(project_replace)] //~ ERROR E0277
struct Struct<T: ?Sized> {
x: T,
}
#[pin_project(project_replace)] //~ ERROR E0277
struct TupleStruct<T: ?Sized>(T);
fn main() {}

70
third_party/rust/pin-project/tests/ui/pin_project/project_replace_unsized.stderr vendored Normal file
View File

@ -0,0 +1,70 @@
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized.rs:3:15
|
3 | #[pin_project(project_replace)] //~ ERROR E0277
| ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
4 | struct Struct<T: ?Sized> {
| - this type parameter needs to be `Sized`
|
= note: required because it appears within the type `Struct<T>`
= help: unsized fn params are gated as an unstable feature
help: function arguments must have a statically known size, borrowed types always have a known size
|
3 | #[pin_project(&project_replace)] //~ ERROR E0277
| ^
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized.rs:5:5
|
4 | struct Struct<T: ?Sized> {
| - this type parameter needs to be `Sized`
5 | x: T,
| ^ doesn't have a size known at compile-time
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized.rs:3:1
|
3 | #[pin_project(project_replace)] //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
4 | struct Struct<T: ?Sized> {
| - this type parameter needs to be `Sized`
|
= note: required because it appears within the type `__StructProjectionOwned<T>`
= note: structs must have a statically known size to be initialized
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized.rs:8:15
|
8 | #[pin_project(project_replace)] //~ ERROR E0277
| ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
9 | struct TupleStruct<T: ?Sized>(T);
| - this type parameter needs to be `Sized`
|
= note: required because it appears within the type `TupleStruct<T>`
= help: unsized fn params are gated as an unstable feature
help: function arguments must have a statically known size, borrowed types always have a known size
|
8 | #[pin_project(&project_replace)] //~ ERROR E0277
| ^
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized.rs:8:1
|
8 | #[pin_project(project_replace)] //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
9 | struct TupleStruct<T: ?Sized>(T);
| - this type parameter needs to be `Sized`
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized.rs:9:8
|
9 | struct TupleStruct<T: ?Sized>(T);
| ^^^^^^^^^^^ - this type parameter needs to be `Sized`
| |
| doesn't have a size known at compile-time
|
= note: all function arguments must have a statically known size
= help: unsized fn params are gated as an unstable feature

13
third_party/rust/pin-project/tests/ui/pin_project/project_replace_unsized_fn_params.rs vendored Normal file
View File

@ -0,0 +1,13 @@
#![feature(unsized_fn_params)]
use pin_project::pin_project;
#[pin_project(project_replace)] //~ ERROR E0277
struct Struct<T: ?Sized> {
x: T,
}
#[pin_project(project_replace)] //~ ERROR E0277
struct TupleStruct<T: ?Sized>(T);
fn main() {}

53
third_party/rust/pin-project/tests/ui/pin_project/project_replace_unsized_fn_params.stderr vendored Normal file
View File

@ -0,0 +1,53 @@
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized_fn_params.rs:6:8
|
6 | struct Struct<T: ?Sized> {
| ^^^^^^^-^^^^^^^^^
| | |
| | this type parameter needs to be `Sized`
| doesn't have a size known at compile-time
|
= note: required because it appears within the type `__StructProjectionOwned<T>`
= note: the return type of a function must have a statically known size
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized_fn_params.rs:7:5
|
6 | struct Struct<T: ?Sized> {
| - this type parameter needs to be `Sized`
7 | x: T,
| ^ doesn't have a size known at compile-time
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized_fn_params.rs:5:1
|
5 | #[pin_project(project_replace)] //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
6 | struct Struct<T: ?Sized> {
| - this type parameter needs to be `Sized`
|
= note: required because it appears within the type `__StructProjectionOwned<T>`
= note: structs must have a statically known size to be initialized
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized_fn_params.rs:11:8
|
11 | struct TupleStruct<T: ?Sized>(T);
| ^^^^^^^^^^^^-^^^^^^^^^
| | |
| | this type parameter needs to be `Sized`
| doesn't have a size known at compile-time
|
= note: required because it appears within the type `__TupleStructProjectionOwned<T>`
= note: the return type of a function must have a statically known size
error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/project_replace_unsized_fn_params.rs:10:1
|
10 | #[pin_project(project_replace)] //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
11 | struct TupleStruct<T: ?Sized>(T);
| - this type parameter needs to be `Sized`
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)

4
third_party/rust/pin-project/tests/ui/pin_project/proper_unpin.rs vendored
View File

@ -13,7 +13,7 @@ struct Foo<T, U> {
}
#[pin_project]
pub struct TrivialBounds {
struct TrivialBounds {
#[pin]
field1: PhantomPinned,
}
@ -34,5 +34,5 @@ fn main() {
is_unpin::<TrivialBounds>(); //~ ERROR E0277
is_unpin::<Bar<'_, PhantomPinned, PhantomPinned>>(); //~ Ok
is_unpin::<Bar<'_, PhantomPinned, PhantomPinned>>(); // Ok
}

26
third_party/rust/pin-project/tests/ui/pin_project/proper_unpin.stderr vendored
View File

@ -1,37 +1,37 @@
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/proper_unpin.rs:31:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
31 | is_unpin::<Foo<PhantomPinned, ()>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Foo<'_, std::marker::PhantomPinned, ()>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Foo<'_, PhantomPinned, ()>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Inner<std::marker::PhantomPinned>`
= note: required because it appears within the type `__Foo<'_, std::marker::PhantomPinned, ()>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `Foo<std::marker::PhantomPinned, ()>`
= note: required because it appears within the type `Inner<PhantomPinned>`
= note: required because it appears within the type `__Foo<'_, PhantomPinned, ()>`
= note: required because of the requirements on the impl of `Unpin` for `Foo<PhantomPinned, ()>`
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/proper_unpin.rs:33:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
33 | is_unpin::<Foo<PhantomPinned, PhantomPinned>>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Foo<'_, std::marker::PhantomPinned, std::marker::PhantomPinned>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `__Foo<'_, PhantomPinned, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Inner<std::marker::PhantomPinned>`
= note: required because it appears within the type `__Foo<'_, std::marker::PhantomPinned, std::marker::PhantomPinned>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `Foo<std::marker::PhantomPinned, std::marker::PhantomPinned>`
= note: required because it appears within the type `Inner<PhantomPinned>`
= note: required because it appears within the type `__Foo<'_, PhantomPinned, PhantomPinned>`
= note: required because of the requirements on the impl of `Unpin` for `Foo<PhantomPinned, PhantomPinned>`
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/proper_unpin.rs:35:5
|
28 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
35 | is_unpin::<TrivialBounds>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^^^^^^^^^^^ within `__TrivialBounds<'_>`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
| ^^^^^^^^^^^^^^^^^^^^^^^^^ within `__TrivialBounds<'_>`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `__TrivialBounds<'_>`
= note: required because of the requirements on the impl of `std::marker::Unpin` for `TrivialBounds`
= note: required because of the requirements on the impl of `Unpin` for `TrivialBounds`

18
third_party/rust/pin-project/tests/ui/pin_project/remove-attr-from-field.rs vendored
View File

@ -1,32 +1,32 @@
use auxiliary_macros::remove_attr;
use auxiliary_macro::remove_attr;
use pin_project::pin_project;
use std::{marker::PhantomPinned, pin::Pin};
fn is_unpin<T: Unpin>() {}
#[pin_project]
#[remove_attr(field)]
struct Foo {
#[remove_attr(field_all)]
struct A {
#[pin]
field: PhantomPinned,
}
#[remove_attr(field)]
#[remove_attr(field_all)]
#[pin_project]
struct Bar {
struct B {
#[pin]
field: PhantomPinned,
}
fn main() {
is_unpin::<Foo>();
is_unpin::<Bar>();
is_unpin::<A>();
is_unpin::<B>();
let mut x = Foo { field: PhantomPinned };
let mut x = A { field: PhantomPinned };
let x = Pin::new(&mut x).project();
let _: Pin<&mut PhantomPinned> = x.field; //~ ERROR E0308
let mut x = Bar { field: PhantomPinned };
let mut x = B { field: PhantomPinned };
let x = Pin::new(&mut x).project();
let _: Pin<&mut PhantomPinned> = x.field; //~ ERROR E0308
}

12
third_party/rust/pin-project/tests/ui/pin_project/remove-attr-from-field.stderr vendored
View File

@ -2,20 +2,20 @@ error[E0308]: mismatched types
--> $DIR/remove-attr-from-field.rs:27:38
|
27 | let _: Pin<&mut PhantomPinned> = x.field; //~ ERROR E0308
| ----------------------- ^^^^^^^ expected struct `std::pin::Pin`, found `&mut std::marker::PhantomPinned`
| ----------------------- ^^^^^^^ expected struct `Pin`, found `&mut PhantomPinned`
| |
| expected due to this
|
= note: expected struct `std::pin::Pin<&mut std::marker::PhantomPinned>`
found mutable reference `&mut std::marker::PhantomPinned`
= note: expected struct `Pin<&mut PhantomPinned>`
found mutable reference `&mut PhantomPinned`
error[E0308]: mismatched types
--> $DIR/remove-attr-from-field.rs:31:38
|
31 | let _: Pin<&mut PhantomPinned> = x.field; //~ ERROR E0308
| ----------------------- ^^^^^^^ expected struct `std::pin::Pin`, found `&mut std::marker::PhantomPinned`
| ----------------------- ^^^^^^^ expected struct `Pin`, found `&mut PhantomPinned`
| |
| expected due to this
|
= note: expected struct `std::pin::Pin<&mut std::marker::PhantomPinned>`
found mutable reference `&mut std::marker::PhantomPinned`
= note: expected struct `Pin<&mut PhantomPinned>`
found mutable reference `&mut PhantomPinned`

38
third_party/rust/pin-project/tests/ui/pin_project/remove-attr-from-struct.rs vendored
View File

@ -1,30 +1,46 @@
use auxiliary_macros::remove_attr;
use auxiliary_macro::remove_attr;
use pin_project::pin_project;
use std::{marker::PhantomPinned, pin::Pin};
fn is_unpin<T: Unpin>() {}
#[pin_project]
#[remove_attr(struct)]
struct Foo {
#[remove_attr(struct_all)]
struct A {
#[pin] //~ ERROR cannot find attribute `pin` in this scope
field: PhantomPinned,
}
#[remove_attr(struct)]
#[remove_attr(struct_all)]
#[pin_project]
struct Bar {
struct B {
#[pin] //~ ERROR cannot find attribute `pin` in this scope
field: PhantomPinned,
}
#[pin_project] //~ ERROR has been removed
#[remove_attr(struct_pin)]
struct C {
field: PhantomPinned,
}
#[remove_attr(struct_pin)]
#[pin_project] // Ok
struct D {
field: PhantomPinned,
}
fn main() {
is_unpin::<Foo>(); //~ ERROR E0277
is_unpin::<Bar>(); //~ ERROR E0277
is_unpin::<A>(); //~ ERROR E0277
is_unpin::<B>(); //~ ERROR E0277
is_unpin::<D>(); // Ok
let mut x = Foo { field: PhantomPinned };
let _x = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
let mut x = A { field: PhantomPinned };
let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
let mut x = Bar { field: PhantomPinned };
let _x = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
let mut x = B { field: PhantomPinned };
let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
let mut x = D { field: PhantomPinned };
let _ = Pin::new(&mut x).project(); //~ Ok
}

76
third_party/rust/pin-project/tests/ui/pin_project/remove-attr-from-struct.stderr vendored
View File

@ -1,8 +1,10 @@
error: cannot find attribute `pin` in this scope
--> $DIR/remove-attr-from-struct.rs:10:7
error: #[pin_project] attribute has been removed
--> $DIR/remove-attr-from-struct.rs:21:1
|
10 | #[pin] //~ ERROR cannot find attribute `pin` in this scope
| ^^^
21 | #[pin_project] //~ ERROR has been removed
| ^^^^^^^^^^^^^^
|
= note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: cannot find attribute `pin` in this scope
--> $DIR/remove-attr-from-struct.rs:17:7
@ -10,54 +12,60 @@ error: cannot find attribute `pin` in this scope
17 | #[pin] //~ ERROR cannot find attribute `pin` in this scope
| ^^^
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:22:5
error: cannot find attribute `pin` in this scope
--> $DIR/remove-attr-from-struct.rs:10:7
|
10 | #[pin] //~ ERROR cannot find attribute `pin` in this scope
| ^^^
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:34:5
|
5 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
22 | is_unpin::<Foo>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^ within `Foo`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
34 | is_unpin::<A>(); //~ ERROR E0277
| ^^^^^^^^^^^^^ within `A`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Foo`
= note: required because it appears within the type `A`
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:23:5
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:35:5
|
5 | fn is_unpin<T: Unpin>() {}
| ----- required by this bound in `is_unpin`
...
23 | is_unpin::<Bar>(); //~ ERROR E0277
| ^^^^^^^^^^^^^^^ within `Bar`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
35 | is_unpin::<B>(); //~ ERROR E0277
| ^^^^^^^^^^^^^ within `B`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Bar`
= note: required because it appears within the type `B`
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:26:14
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:39:13
|
26 | let _x = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^^ within `Foo`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
39 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^^ within `A`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Foo`
= note: required by `std::pin::Pin::<P>::new`
= note: required because it appears within the type `A`
= note: required by `Pin::<P>::new`
error[E0599]: no method named `project` found for struct `std::pin::Pin<&mut Foo>` in the current scope
--> $DIR/remove-attr-from-struct.rs:26:31
error[E0599]: no method named `project` found for struct `Pin<&mut A>` in the current scope
--> $DIR/remove-attr-from-struct.rs:39:30
|
26 | let _x = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^ method not found in `std::pin::Pin<&mut Foo>`
39 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^ method not found in `Pin<&mut A>`
error[E0277]: `std::marker::PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:29:14
error[E0277]: `PhantomPinned` cannot be unpinned
--> $DIR/remove-attr-from-struct.rs:42:13
|
29 | let _x = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^^ within `Bar`, the trait `std::marker::Unpin` is not implemented for `std::marker::PhantomPinned`
42 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^^ within `B`, the trait `Unpin` is not implemented for `PhantomPinned`
|
= note: required because it appears within the type `Bar`
= note: required by `std::pin::Pin::<P>::new`
= note: required because it appears within the type `B`
= note: required by `Pin::<P>::new`
error[E0599]: no method named `project` found for struct `std::pin::Pin<&mut Bar>` in the current scope
--> $DIR/remove-attr-from-struct.rs:29:31
error[E0599]: no method named `project` found for struct `Pin<&mut B>` in the current scope
--> $DIR/remove-attr-from-struct.rs:42:30
|
29 | let _x = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^ method not found in `std::pin::Pin<&mut Bar>`
42 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
| ^^^^^^^ method not found in `Pin<&mut B>`

26
third_party/rust/pin-project/tests/ui/pin_project/safe_packed_borrows.rs vendored
View File

@ -1,21 +1,27 @@
#![deny(safe_packed_borrows)]
#![forbid(safe_packed_borrows)]
#![allow(unaligned_references)]
// Refs: https://github.com/rust-lang/rust/issues/46043
// This lint was removed in https://github.com/rust-lang/rust/pull/82525 (nightly-2021-03-28).
// Refs:
// - https://github.com/rust-lang/rust/pull/82525
// - https://github.com/rust-lang/rust/issues/46043
#[repr(packed)]
struct A {
field: u32,
struct Packed {
f: u32,
}
#[repr(packed(2))]
struct B {
field: u32,
struct PackedN {
f: u32,
}
fn main() {
let a = A { field: 1 };
&a.field; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
let a = Packed { f: 1 };
&a.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
let _ = &a.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
let b = B { field: 1 };
&b.field; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
let b = PackedN { f: 1 };
&b.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
let _ = &b.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
}

38
third_party/rust/pin-project/tests/ui/pin_project/safe_packed_borrows.stderr vendored
View File

@ -1,23 +1,43 @@
error: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
--> $DIR/safe_packed_borrows.rs:17:5
--> $DIR/safe_packed_borrows.rs:21:5
|
17 | &a.field; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
| ^^^^^^^^
21 | &a.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
| ^^^^
|
note: the lint level is defined here
--> $DIR/safe_packed_borrows.rs:1:9
--> $DIR/safe_packed_borrows.rs:1:11
|
1 | #![deny(safe_packed_borrows)]
| ^^^^^^^^^^^^^^^^^^^
1 | #![forbid(safe_packed_borrows)]
| ^^^^^^^^^^^^^^^^^^^
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>
= note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
--> $DIR/safe_packed_borrows.rs:20:5
--> $DIR/safe_packed_borrows.rs:22:13
|
20 | &b.field; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
| ^^^^^^^^
22 | let _ = &a.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
| ^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>
= note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
--> $DIR/safe_packed_borrows.rs:25:5
|
25 | &b.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
| ^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>
= note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior
error: borrow of packed field is unsafe and requires unsafe function or block (error E0133)
--> $DIR/safe_packed_borrows.rs:26:13
|
26 | let _ = &b.f; //~ ERROR borrow of packed field is unsafe and requires unsafe function or block
| ^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

24
third_party/rust/pin-project/tests/ui/pin_project/unaligned_references.rs vendored Normal file
View File

@ -0,0 +1,24 @@
#![forbid(unaligned_references)]
#![allow(safe_packed_borrows)]
// Refs: https://github.com/rust-lang/rust/issues/82523
#[repr(packed)]
struct Packed {
f: u32,
}
#[repr(packed(2))]
struct PackedN {
f: u32,
}
fn main() {
let a = Packed { f: 1 };
&a.f; //~ ERROR reference to packed field is unaligned
let _ = &a.f; //~ ERROR reference to packed field is unaligned
let b = PackedN { f: 1 };
&b.f; //~ ERROR reference to packed field is unaligned
let _ = &b.f; //~ ERROR reference to packed field is unaligned
}

36
third_party/rust/pin-project/tests/ui/pin_project/unaligned_references.stderr vendored Normal file
View File

@ -0,0 +1,36 @@
error: reference to packed field is unaligned
--> $DIR/unaligned_references.rs:18:5
|
18 | &a.f; //~ ERROR reference to packed field is unaligned
| ^^^^
|
note: the lint level is defined here
--> $DIR/unaligned_references.rs:1:11
|
1 | #![forbid(unaligned_references)]
| ^^^^^^^^^^^^^^^^^^^^
= note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
error: reference to packed field is unaligned
--> $DIR/unaligned_references.rs:19:13
|
19 | let _ = &a.f; //~ ERROR reference to packed field is unaligned
| ^^^^
|
= note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
error: reference to packed field is unaligned
--> $DIR/unaligned_references.rs:22:5
|
22 | &b.f; //~ ERROR reference to packed field is unaligned
| ^^^^
|
= note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
error: reference to packed field is unaligned
--> $DIR/unaligned_references.rs:23:13
|
23 | let _ = &b.f; //~ ERROR reference to packed field is unaligned
| ^^^^
|
= note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)

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