--- /dev/null
+{
+ "git": {
+ "sha1": "d1c11dc50f88330cfb05ac55aaa06c28877eb1d6"
+ },
+ "path_in_vcs": ""
+}
\ No newline at end of file
--- /dev/null
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+This project adheres to [Semantic Versioning](https://semver.org).
+
+<!--
+Note: In this file, do not use the hard wrap in the middle of a sentence for compatibility with GitHub comment style markdown rendering.
+-->
+
+## [Unreleased]
+
+## [1.0.12] - 2022-08-15
+
+- Suppress `unused_tuple_struct_fields` lint in generated code.
+
+## [1.0.11] - 2022-07-02
+
+- [Suppress `dead_code` lint in generated code.](https://github.com/taiki-e/pin-project/pull/346)
+
+## [1.0.10] - 2021-12-31
+
+- Revert the increase of the minimal version of `syn` that was done in 1.0.9.
+
+## [1.0.9] - 2021-12-26
+
+- [Prevent abuse of private module.](https://github.com/taiki-e/pin-project/pull/336)
+
+- Update minimal version of `syn` to 1.0.84.
+
+## [1.0.8] - 2021-07-21
+
+- [Suppress `clippy::use_self` and `clippy::type_repetition_in_bounds` lints in generated code.](https://github.com/taiki-e/pin-project/pull/331)
+
+## [1.0.7] - 2021-04-16
+
+- [Fix compile error when using `self::` as prefix of path inside `#[pinned_drop]` impl.](https://github.com/taiki-e/pin-project/pull/326)
+
+## [1.0.6] - 2021-03-25
+
+- [Suppress `clippy::semicolon_if_nothing_returned` lint in generated code.](https://github.com/taiki-e/pin-project/pull/318)
+
+## [1.0.5] - 2021-02-03
+
+- [Suppress `deprecated` lint in generated code.](https://github.com/taiki-e/pin-project/pull/313)
+
+## [1.0.4] - 2021-01-09
+
+- [Suppress `clippy::ref_option_ref` lint in generated code.](https://github.com/taiki-e/pin-project/pull/308)
+
+## [1.0.3] - 2021-01-05
+
+- Exclude unneeded files from crates.io.
+
+## [1.0.2] - 2020-11-18
+
+- [Suppress `clippy::unknown_clippy_lints` lint in generated code.](https://github.com/taiki-e/pin-project/pull/303)
+
+## [1.0.1] - 2020-10-15
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/commit/ddcd88079ba2d82857c365f2a3543ad146ade54c).
+
+- [Fix warnings when `#[pin_project]` attribute used within `macro_rules!` macros.](https://github.com/taiki-e/pin-project/pull/298)
+
+## [1.0.0] - 2020-10-13
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/commit/ddcd88079ba2d82857c365f2a3543ad146ade54c).
+
+- [Remove deprecated `#[project]`, `#[project_ref]`, and `#[project_replace]` attributes.](https://github.com/taiki-e/pin-project/pull/265)
+
+ Name the projected type by passing an argument with the same name as the method to the `#[pin_project]` attribute instead:
+
+ ```diff
+ - #[pin_project]
+ + #[pin_project(project = EnumProj)]
+ enum Enum<T> {
+ Variant(#[pin] T),
+ }
+
+ - #[project]
+ fn func<T>(x: Pin<&mut Enum<T>>) {
+ - #[project]
+ match x.project() {
+ - Enum::Variant(_) => { /* ... */ }
+ + EnumProj::Variant(_) => { /* ... */ }
+ }
+ }
+ ```
+
+- [Remove deprecated `Replace` argument from `#[pin_project]` attribute.](https://github.com/taiki-e/pin-project/pull/266) Use `project_replace` argument instead.
+
+- [Optimize code generation when used on enums.](https://github.com/taiki-e/pin-project/pull/270)
+
+- [Raise the minimum supported Rust version of this crate from Rust 1.34 to Rust 1.37.](https://github.com/taiki-e/pin-project/pull/292)
+
+- Suppress `explicit_outlives_requirements`, `box_pointers`, `clippy::large_enum_variant`, `clippy::pattern_type_mismatch`, `clippy::implicit_return`, and `clippy::redundant_pub_crate` lints in generated code. ([#276](https://github.com/taiki-e/pin-project/pull/276), [#277](https://github.com/taiki-e/pin-project/pull/277), [#284](https://github.com/taiki-e/pin-project/pull/284))
+
+- Diagnostic improvements.
+
+Changes since the 1.0.0-alpha.1 release:
+
+- [Fix drop order of pinned fields in `project_replace`.](https://github.com/taiki-e/pin-project/pull/287)
+
+- Update minimal version of `syn` to 1.0.44.
+
+## [1.0.0-alpha.1] - 2020-09-22
+
+- [Remove deprecated `#[project]`, `#[project_ref]`, and `#[project_replace]` attributes.](https://github.com/taiki-e/pin-project/pull/265)
+
+ Name the projected type by passing an argument with the same name as the method to the `#[pin_project]` attribute instead:
+
+ ```diff
+ - #[pin_project]
+ + #[pin_project(project = EnumProj)]
+ enum Enum<T> {
+ Variant(#[pin] T),
+ }
+
+ - #[project]
+ fn func<T>(x: Pin<&mut Enum<T>>) {
+ - #[project]
+ match x.project() {
+ - Enum::Variant(_) => { /* ... */ }
+ + EnumProj::Variant(_) => { /* ... */ }
+ }
+ }
+ ```
+
+- [Remove deprecated `Replace` argument from `#[pin_project]` attribute.](https://github.com/taiki-e/pin-project/pull/266) Use `project_replace` argument instead.
+
+- [Optimize code generation when used on enums.](https://github.com/taiki-e/pin-project/pull/270)
+
+- Suppress `explicit_outlives_requirements`, `box_pointers`, `clippy::large_enum_variant`, `clippy::pattern_type_mismatch`, and `clippy::implicit_return` lints in generated code. ([#276](https://github.com/taiki-e/pin-project/pull/276), [#277](https://github.com/taiki-e/pin-project/pull/277))
+
+- Diagnostic improvements.
+
+See also [tracking issue for 1.0 release](https://github.com/taiki-e/pin-project/issues/264).
+
+## [0.4.30] - 2022-07-02
+
+- [Suppress `dead_code` lint in generated code.](https://github.com/taiki-e/pin-project/pull/347)
+
+## [0.4.29] - 2021-12-26
+
+- [Fix compile error with `syn` 1.0.84 and later.](https://github.com/taiki-e/pin-project/pull/335)
+
+## [0.4.28] - 2021-03-28
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- Update minimal version of `syn` to 1.0.44.
+
+## [0.4.26] - 2020-10-04
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Fix drop order of pinned fields in `project_replace`.](https://github.com/taiki-e/pin-project/pull/287)
+
+## [0.4.25] - 2020-10-01
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Fix compile error with `?Sized` type parameters.](https://github.com/taiki-e/pin-project/pull/263)
+
+## [0.4.22] - 2020-06-14
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- Documentation improvements.
+
+## [0.4.21] - 2020-06-13
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Suppress `unused_results` lint in generated code.](https://github.com/taiki-e/pin-project/pull/239)
+
+## [0.4.18] - 2020-06-04
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [`#[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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- 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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Fix lifetime inference error when associated types are used in fields.](https://github.com/taiki-e/pin-project/pull/188)
+
+- [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.](https://github.com/taiki-e/pin-project/pull/181)
+
+## [0.4.8] - 2020-01-27
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Ensure that users cannot implement `PinnedDrop` without proper attribute argument.](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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Fix support for lifetime bounds.](https://github.com/taiki-e/pin-project/pull/176)
+
+## [0.4.6] - 2019-11-20
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [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
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Fix compile error with `dyn` types.](https://github.com/taiki-e/pin-project/pull/158)
+
+## [0.4.4] - 2019-10-17
+
+**Note:** This release has been yanked because it [failed to compile with syn 1.0.84 and later](https://github.com/taiki-e/pin-project/pull/335).
+
+- [Fix an issue where `PinnedDrop` implementations can call unsafe code without an unsafe block.](https://github.com/taiki-e/pin-project/pull/149)
+
+## [0.4.3] - 2019-10-15
+
+**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()]`.](https://github.com/taiki-e/pin-project/pull/135)
+
+- [`#[pin_project]` can now interoperate with `#[cfg()]` on tuple structs and tuple variants.](https://github.com/taiki-e/pin-project/pull/135)
+
+- [Fix support for DSTs(Dynamically Sized Types) on `#[pin_project(UnsafeUnpin)]`](https://github.com/taiki-e/pin-project/pull/120)
+
+- Diagnostic improvements.
+
+## [0.4.2] - 2019-09-29
+
+**Note:** This release has been yanked. See [#148](https://github.com/taiki-e/pin-project/pull/148) for details.
+
+- [Fix support for DSTs(Dynamically Sized Types).](https://github.com/taiki-e/pin-project/pull/113)
+
+## [0.4.1] - 2019-09-26
+
+**Note:** This release has been yanked. See [#148](https://github.com/taiki-e/pin-project/pull/148) for details.
+
+- [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
+
+**Note:** This release has been yanked. See [#148](https://github.com/taiki-e/pin-project/pull/148) for details.
+
+- [**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.
+
+- `#[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))
+
+- [The `Unpin` argument has been removed - an `Unpin` impl is now generated by default.](https://github.com/taiki-e/pin-project/pull/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))
+
+- [`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]` 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 be used for public type with private field types.](https://github.com/taiki-e/pin-project/pull/53)
+
+- [`#[pin_project]` can now interoperate with `#[cfg()]`.](https://github.com/taiki-e/pin-project/pull/77)
+
+- [Add `project_ref` method to `#[pin_project]` types.](https://github.com/taiki-e/pin-project/pull/93)
+
+- [Add `#[project_ref]` attribute.](https://github.com/taiki-e/pin-project/pull/93)
+
+- [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 `impl` blocks.](https://github.com/taiki-e/pin-project/pull/46)
+
+- [`#[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:
+
+- [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
+
+- [Change the argument type of project method back to `self: Pin<&mut Self>`.](https://github.com/taiki-e/pin-project/pull/90)
+
+- [Remove "project_attr" feature and always enable `#[project]` attribute.](https://github.com/taiki-e/pin-project/pull/94)
+
+- [Remove "renamed" feature.](https://github.com/taiki-e/pin-project/pull/100)
+
+- [`#[project]` attribute can now be used for `use` statements.](https://github.com/taiki-e/pin-project/pull/85)
+
+- [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.](https://github.com/taiki-e/pin-project/pull/96)
+
+## [0.4.0-alpha.11] - 2019-09-11
+
+- [Change #[pinned_drop] to trait implementation.](https://github.com/taiki-e/pin-project/pull/86)
+
+ ```rust
+ #[pinned_drop]
+ impl<T> PinnedDrop for Foo<'_, T> {
+ fn drop(mut self: Pin<&mut Self>) {
+ **self.project().was_dropped = true;
+ }
+ }
+ ```
+
+- Add some examples and generated code.
+
+- Diagnostic improvements.
+
+## [0.4.0-alpha.10] - 2019-09-07
+
+- [`#[pin_project]` can now interoperate with `#[cfg()]`.](https://github.com/taiki-e/pin-project/pull/77)
+
+- Documentation improvements.
+
+## [0.4.0-alpha.9] - 2019-09-05
+
+- [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
+ }
+ ```
+
+- [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
+
+- [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.
+
+- [Diagnostic improvements.](https://github.com/taiki-e/pin-project/pull/61)
+
+## [0.4.0-alpha.7] - 2019-09-02
+
+- [Suppress `dead_code` lint in generated types.](https://github.com/taiki-e/pin-project/pull/57)
+
+## [0.4.0-alpha.6] - 2019-09-01
+
+- [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.](https://github.com/taiki-e/pin-project/pull/51)
+
+## [0.4.0-alpha.4] - 2019-08-23
+
+- Suppress `clippy::drop_bounds` lint in generated code.
+
+## [0.4.0-alpha.3] - 2019-08-23
+
+- [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.](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.](https://github.com/taiki-e/pin-project/pull/48) This removed some restrictions.
+
+## [0.4.0-alpha.2] - 2019-08-13
+
+- Update `proc-macro2`, `syn`, and `quote` to 1.0.
+
+## [0.4.0-alpha.1] - 2019-08-11
+
+- **Pin projection has become a safe operation.**
+
+- `#[unsafe_project]` has been replaced with `#[pin_project]`.
+
+- 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.
+
+- `Unpin` impls must be specified with an impl of `UnsafeUnpin`, instead of implementing the normal `Unpin` trait.
+
+- Make `#[project]` attribute disabled by default.
+
+See also [tracking issue for 0.4 release](https://github.com/taiki-e/pin-project/issues/21).
+
+## [0.3.5] - 2019-08-14
+
+- Update `proc-macro2`, `syn`, and `quote` to 1.0.
+
+## [0.3.4] - 2019-07-21
+
+- Diagnostic improvements.
+
+## [0.3.3] - 2019-07-15
+
+**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
+
+- Avoid suffixes on tuple index.
+
+## [0.3.1] - 2019-03-02
+
+- Documentation improvements.
+
+- Update minimum `syn` version to 0.15.22.
+
+## [0.3.0] - 2019-02-20
+
+- Remove `unsafe_fields` attribute.
+
+- Remove `unsafe_variants` attribute.
+
+## [0.2.2] - 2019-02-20
+
+- Fix a bug that generates incorrect code for the some structures with trait bounds on type generics.
+
+## [0.2.1] - 2019-02-20
+
+- Fix a bug that generates incorrect code for the structures with where clause and associated type fields.
+
+## [0.2.0] - 2019-02-11
+
+- Make `unsafe_fields` optional.
+
+- Documentation improvements.
+
+## [0.1.8] - 2019-02-02
+
+- Add the feature to create projected enums to `unsafe_project`.
+
+- Add `project` attribute to support pattern matching.
+
+## [0.1.7] - 2019-01-19
+
+- Fix documentation.
+
+## [0.1.6] - 2019-01-19
+
+- `unsafe_fields` can now opt-out.
+
+- Add `unsafe_variants` attribute. This attribute is available if pin-project is built with the "unsafe_variants" feature.
+
+## [0.1.5] - 2019-01-17
+
+- Add support for tuple struct to `unsafe_project`.
+
+## [0.1.4] - 2019-01-12
+
+- Add options for automatically implementing `Unpin` to both `unsafe_project` and `unsafe_fields`.
+
+## [0.1.3] - 2019-01-11
+
+- Fix dependencies.
+
+- Add `unsafe_fields` attribute.
+
+## [0.1.2] - 2019-01-09
+
+- Documentation improvements.
+
+## [0.1.1] - 2019-01-08
+
+- Rename from `unsafe_pin_project` to `unsafe_project`.
+
+## [0.1.0] - 2019-01-08
+
+**Note:** This release has been yanked.
+
+Initial release
+
+[Unreleased]: https://github.com/taiki-e/pin-project/compare/v1.0.12...HEAD
+[1.0.12]: https://github.com/taiki-e/pin-project/compare/v1.0.11...v1.0.12
+[1.0.11]: https://github.com/taiki-e/pin-project/compare/v1.0.10...v1.0.11
+[1.0.10]: https://github.com/taiki-e/pin-project/compare/v1.0.9...v1.0.10
+[1.0.9]: https://github.com/taiki-e/pin-project/compare/v1.0.8...v1.0.9
+[1.0.8]: https://github.com/taiki-e/pin-project/compare/v1.0.7...v1.0.8
+[1.0.7]: https://github.com/taiki-e/pin-project/compare/v1.0.6...v1.0.7
+[1.0.6]: https://github.com/taiki-e/pin-project/compare/v1.0.5...v1.0.6
+[1.0.5]: https://github.com/taiki-e/pin-project/compare/v1.0.4...v1.0.5
+[1.0.4]: https://github.com/taiki-e/pin-project/compare/v1.0.3...v1.0.4
+[1.0.3]: https://github.com/taiki-e/pin-project/compare/v1.0.2...v1.0.3
+[1.0.2]: https://github.com/taiki-e/pin-project/compare/v1.0.1...v1.0.2
+[1.0.1]: https://github.com/taiki-e/pin-project/compare/v1.0.0...v1.0.1
+[1.0.0]: https://github.com/taiki-e/pin-project/compare/v1.0.0-alpha.1...v1.0.0
+[1.0.0-alpha.1]: https://github.com/taiki-e/pin-project/compare/v0.4.23...v1.0.0-alpha.1
+[0.4.30]: https://github.com/taiki-e/pin-project/compare/v0.4.29...v0.4.30
+[0.4.29]: https://github.com/taiki-e/pin-project/compare/v0.4.28...v0.4.29
+[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
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+[0.4.0-alpha.2]: https://github.com/taiki-e/pin-project/compare/v0.4.0-alpha.1...v0.4.0-alpha.2
+[0.4.0-alpha.1]: https://github.com/taiki-e/pin-project/compare/v0.3.5...v0.4.0-alpha.1
+[0.3.5]: https://github.com/taiki-e/pin-project/compare/v0.3.4...v0.3.5
+[0.3.4]: https://github.com/taiki-e/pin-project/compare/v0.3.3...v0.3.4
+[0.3.3]: https://github.com/taiki-e/pin-project/compare/v0.3.2...v0.3.3
+[0.3.2]: https://github.com/taiki-e/pin-project/compare/v0.3.1...v0.3.2
+[0.3.1]: https://github.com/taiki-e/pin-project/compare/v0.3.0...v0.3.1
+[0.3.0]: https://github.com/taiki-e/pin-project/compare/v0.2.2...v0.3.0
+[0.2.2]: https://github.com/taiki-e/pin-project/compare/v0.2.1...v0.2.2
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+checksum = "e7f408301c7480f9e6294eb779cfc907f54bd901a9660ef24d7f233ed5376485"
+dependencies = [
+ "glob",
+ "once_cell",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "termcolor",
+ "toml",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
--- /dev/null
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+rust-version = "1.37"
+name = "pin-project"
+version = "1.0.12"
+exclude = [
+ "/.*",
+ "/ci",
+ "/tools",
+]
+description = """
+A crate for safe and ergonomic pin-projection.
+"""
+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 = "=1.0.12"
+
+[dev-dependencies.macrotest]
+version = "1.0.9"
+
+[dev-dependencies.rustversion]
+version = "1"
+
+[dev-dependencies.static_assertions]
+version = "1"
+
+[dev-dependencies.trybuild]
+version = "1.0.49"
--- /dev/null
+[package]
+name = "pin-project"
+version = "1.0.12"
+edition = "2018"
+rust-version = "1.37"
+license = "Apache-2.0 OR MIT"
+repository = "https://github.com/taiki-e/pin-project"
+keywords = ["pin", "macros", "attribute"]
+categories = ["no-std", "rust-patterns"]
+exclude = ["/.*", "/ci", "/tools"]
+description = """
+A crate for safe and ergonomic pin-projection.
+"""
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[workspace]
+members = [
+ "pin-project-internal",
+ "tests/auxiliary/macro",
+ "tests/doc",
+ "tests/no-core",
+ "tests/no-std",
+ "tests/rust-2015",
+]
+
+[dependencies]
+pin-project-internal = { version = "=1.0.12", path = "pin-project-internal" }
+
+[dev-dependencies]
+pin-project-auxiliary-macro = { path = "tests/auxiliary/macro" }
+macrotest = "1.0.9"
+rustversion = "1"
+static_assertions = "1"
+trybuild = "1.0.49"
+
+[patch.crates-io]
+prettyplease = { git = "https://github.com/taiki-e/prettyplease.git", branch = "dev" } # lower MSRV
--- /dev/null
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
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+ "Legal Entity" shall mean the union of the acting entity and all
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+ direction or management of such entity, whether by contract or
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+ this License, each Contributor hereby grants to You a perpetual,
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+ Work or Derivative Works thereof in any medium, with or without
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+ meet the following conditions:
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+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
--- /dev/null
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
--- /dev/null
+# pin-project
+
+[](https://crates.io/crates/pin-project)
+[](https://docs.rs/pin-project)
+[](#license)
+[](https://www.rust-lang.org)
+[](https://github.com/taiki-e/pin-project/actions)
+
+A crate for safe and ergonomic [pin-projection].
+
+## Usage
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+pin-project = "1"
+```
+
+*Compiler support: requires rustc 1.37+*
+
+## Examples
+
+[`#[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;
+
+#[pin_project]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+impl<T, U> Struct<T, U> {
+ 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
+ }
+}
+```
+
+[*code like this will be generated*][struct-default-expanded]
+
+To use `#[pin_project]` on enums, you need to name the projection type
+returned from the method.
+
+```rust
+use pin_project::pin_project;
+use std::pin::Pin;
+
+#[pin_project(project = EnumProj)]
+enum Enum<T, U> {
+ Pinned(#[pin] T),
+ Unpinned(U),
+}
+
+impl<T, U> Enum<T, U> {
+ fn method(self: Pin<&mut Self>) {
+ match self.project() {
+ EnumProj::Pinned(x) => {
+ let _: Pin<&mut T> = x;
+ }
+ EnumProj::Unpinned(y) => {
+ let _: &mut U = y;
+ }
+ }
+ }
+}
+```
+
+[*code like this will be generated*][enum-default-expanded]
+
+See [documentation](https://docs.rs/pin-project) for more details, and
+see [examples] directory for more examples and generated code.
+
+## Related Projects
+
+- [pin-project-lite]: A lightweight version of pin-project written with declarative macros.
+
+[`pin_project`]: https://docs.rs/pin-project/1/pin_project/attr.pin_project.html
+[enum-default-expanded]: examples/enum-default-expanded.rs
+[examples]: examples/README.md
+[pin-project-lite]: https://github.com/taiki-e/pin-project-lite
+[pin-projection]: https://doc.rust-lang.org/std/pin/index.html#projections-and-structural-pinning
+[struct-default-expanded]: examples/struct-default-expanded.rs
+
+## License
+
+Licensed under either of [Apache License, Version 2.0](LICENSE-APACHE) or
+[MIT license](LICENSE-MIT) at your option.
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall
+be dual licensed as above, without any additional terms or conditions.
--- /dev/null
+# Examples and generated code of each feature of pin-project
+
+### Basic usage of `#[pin_project]` on structs
+
+- [example](struct-default.rs)
+- [generated code](struct-default-expanded.rs)
+
+### Basic usage of `#[pin_project]` on enums
+
+- [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/1/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/1/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/1/pin_project/attr.pin_project.html#project_replace-method)
+
+### Ensure `!Unpin` by `#[pin_project(!Unpin)]`
+
+- [example](not_unpin.rs)
+- [generated code](not_unpin-expanded.rs)
+- [`!Unpin` documentation](https://docs.rs/pin-project/1/pin_project/attr.pin_project.html#unpin)
+
+Note: These generated code examples are the little simplified version of the
+actual generated code. See [expansion tests](../tests#expansion-tests-expand-expandtestrs) if you
+want to see the exact version of the actual generated code.
--- /dev/null
+// Original code (./enum-default.rs):
+//
+// ```rust
+// #![allow(dead_code)]
+//
+// use pin_project::pin_project;
+//
+// #[pin_project(project = EnumProj)]
+// enum Enum<T, U> {
+// Pinned(#[pin] T),
+// Unpinned(U),
+// }
+//
+// fn main() {}
+// ```
+
+#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
+#![allow(
+ clippy::needless_lifetimes,
+ clippy::just_underscores_and_digits,
+ clippy::used_underscore_binding
+)]
+
+use pin_project::pin_project;
+
+// #[pin_project(project = EnumProj)]
+enum Enum<T, U> {
+ Pinned(/* #[pin] */ T),
+ Unpinned(U),
+}
+
+enum EnumProj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Pinned(::pin_project::__private::Pin<&'pin mut (T)>),
+ Unpinned(&'pin mut (U)),
+}
+
+const _: () = {
+ // When `#[pin_project]` is used on enums, only named projection types and
+ // methods are generated because there is no way to access variants of
+ // projected types without naming it.
+ // (When `#[pin_project]` is used on structs, both methods are always generated.)
+
+ 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() {
+ Self::Pinned(_0) => {
+ EnumProj::Pinned(::pin_project::__private::Pin::new_unchecked(_0))
+ }
+ Self::Unpinned(_0) => EnumProj::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.
+ struct __Enum<'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 Enum<T, U> where
+ __Enum<'pin, T, U>: ::pin_project::__private::Unpin
+ {
+ }
+ // A dummy impl of `UnsafeUnpin`, to ensure that the user cannot implement it.
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> ::pin_project::UnsafeUnpin for Enum<T, U> where
+ __Enum<'pin, T, U>: ::pin_project::__private::Unpin
+ {
+ }
+
+ // 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> {}
+ // A dummy impl of `PinnedDrop`, to ensure that users don't accidentally
+ // write a non-functional `PinnedDrop` impls.
+ #[doc(hidden)]
+ 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.
+};
+
+fn main() {}
--- /dev/null
+// See ./enum-default-expanded.rs for generated code.
+
+#![allow(dead_code)]
+
+use pin_project::pin_project;
+
+#[pin_project(project = EnumProj)]
+enum Enum<T, U> {
+ Pinned(#[pin] T),
+ Unpinned(U),
+}
+
+fn main() {}
--- /dev/null
+// 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::needless_lifetimes)]
+
+use pin_project::pin_project;
+
+// #[pin_project(!Unpin)]
+pub struct Struct<T, U> {
+ // #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+const _: () = {
+ pub(crate) struct __StructProjection<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ }
+ 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> 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,
+ }
+ }
+ }
+ }
+
+ // 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;
+ }
+
+ // 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.
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> ::pin_project::UnsafeUnpin for Struct<T, U> where
+ ::pin_project::__private::Wrapper<'pin, ::pin_project::__private::PhantomPinned>:
+ ::pin_project::__private::Unpin
+ {
+ }
+
+ // 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> {}
+ // A dummy impl of `PinnedDrop`, to ensure that users don't accidentally
+ // write a non-functional `PinnedDrop` impls.
+ #[doc(hidden)]
+ impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+
+fn main() {
+ fn _is_unpin<T: Unpin>() {}
+ // _is_unpin::<Struct<(), ()>>(); //~ ERROR `std::marker::PhantomPinned` cannot be unpinned
+}
--- /dev/null
+// 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
+}
--- /dev/null
+// Original code (./pinned_drop.rs):
+//
+// ```rust
+// #![allow(dead_code)]
+//
+// use std::pin::Pin;
+//
+// use pin_project::{pin_project, pinned_drop};
+//
+// #[pin_project(PinnedDrop)]
+// pub struct Struct<'a, T> {
+// was_dropped: &'a mut bool,
+// #[pin]
+// field: T,
+// }
+//
+// #[pinned_drop]
+// fn drop_Struct<T>(mut this: Pin<&mut Struct<'_, T>>) {
+// **this.project().was_dropped = true;
+// }
+//
+// fn main() {}
+// ```
+
+#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
+#![allow(clippy::needless_lifetimes, clippy::mut_mut)]
+
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+// #[pin_project(PinnedDrop)]
+pub struct Struct<'a, T> {
+ was_dropped: &'a mut bool,
+ // #[pin]
+ field: T,
+}
+
+const _: () = {
+ 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)>,
+ }
+ 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)>,
+ }
+
+ 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),
+ }
+ }
+ }
+ }
+
+ // 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;
+ }
+
+ 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
+ {
+ }
+ // A dummy impl of `UnsafeUnpin`, to ensure that the user cannot implement it.
+ #[doc(hidden)]
+ unsafe impl<'pin, 'a, T> ::pin_project::UnsafeUnpin for Struct<'a, T> where
+ __Struct<'pin, 'a, T>: ::pin_project::__private::Unpin
+ {
+ }
+};
+
+// 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 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]` and can drop a
+// type that implements `PinnedDrop` using the [`drop`] function safely.
+// **Do not call or implement this trait directly.**
+#[doc(hidden)]
+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>) {
+ #[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);
+ }
+}
+
+fn main() {}
--- /dev/null
+// See ./pinned_drop-expanded.rs for generated code.
+
+#![allow(dead_code)]
+
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project(PinnedDrop)]
+pub struct Struct<'a, T> {
+ was_dropped: &'a mut bool,
+ #[pin]
+ field: T,
+}
+
+#[pinned_drop]
+impl<T> PinnedDrop for Struct<'_, T> {
+ fn drop(self: Pin<&mut Self>) {
+ **self.project().was_dropped = true;
+ }
+}
+
+fn main() {}
--- /dev/null
+// 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::needless_lifetimes)]
+
+use pin_project::pin_project;
+
+// #[pin_project(project_replace)]
+struct Struct<T, U> {
+ // #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+const _: () = {
+ struct __StructProjection<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ }
+ struct __StructProjectionRef<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned: ::pin_project::__private::Pin<&'pin (T)>,
+ unpinned: &'pin (U),
+ }
+ struct __StructProjectionOwned<T, U> {
+ pinned: ::pin_project::__private::PhantomData<T>,
+ unpinned: U,
+ }
+
+ 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();
+
+ // 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::new(__self_ptr, __replacement);
+
+ 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),
+ };
+
+ // 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::new(pinned);
+ }
+
+ // Finally, return the result
+ __result
+ }
+ }
+ }
+
+ // 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;
+ }
+
+ // 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
+ {
+ }
+ // A dummy impl of `UnsafeUnpin`, to ensure that the user cannot implement it.
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> ::pin_project::UnsafeUnpin for Struct<T, U> where
+ __Struct<'pin, T, U>: ::pin_project::__private::Unpin
+ {
+ }
+
+ // 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> {}
+ // A dummy impl of `PinnedDrop`, to ensure that users don't accidentally
+ // write a non-functional `PinnedDrop` impls.
+ #[doc(hidden)]
+ impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+
+fn main() {}
--- /dev/null
+// 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() {}
--- /dev/null
+// Original code (./struct-default.rs):
+//
+// ```rust
+// #![allow(dead_code)]
+//
+// use pin_project::pin_project;
+//
+// #[pin_project]
+// 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::needless_lifetimes)]
+
+use pin_project::pin_project;
+
+// #[pin_project]
+struct Struct<T, U> {
+ // #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+const _: () = {
+ struct __StructProjection<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ }
+ 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: ::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,
+ }
+ }
+ }
+ }
+
+ // 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;
+ }
+
+ // 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,
+ (::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
+ {
+ }
+ // 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.
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> ::pin_project::UnsafeUnpin for Struct<T, U> where
+ __Struct<'pin, T, U>: ::pin_project::__private::Unpin
+ {
+ }
+
+ // 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.
+ #[doc(hidden)]
+ impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+
+fn main() {}
--- /dev/null
+// See ./struct-default-expanded.rs for generated code.
+
+#![allow(dead_code)]
+
+use pin_project::pin_project;
+
+#[pin_project]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+// Original code (./unsafe_unpin.rs):
+//
+// ```rust
+// #![allow(dead_code)]
+//
+// use pin_project::{pin_project, UnsafeUnpin};
+//
+// #[pin_project(UnsafeUnpin)]
+// pub struct Struct<T, U> {
+// #[pin]
+// pinned: T,
+// unpinned: U,
+// }
+//
+// unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
+//
+// fn main() {}
+// ```
+
+#![allow(dead_code, unused_imports, unused_parens, unknown_lints, renamed_and_removed_lints)]
+#![allow(clippy::needless_lifetimes)]
+
+use pin_project::{pin_project, UnsafeUnpin};
+
+// #[pin_project(UnsafeUnpin)]
+pub struct Struct<T, U> {
+ // #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+const _: () = {
+ pub(crate) struct __StructProjection<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ }
+ 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> 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,
+ }
+ }
+ }
+ }
+
+ // 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;
+ }
+
+ // Implement `Unpin` via `UnsafeUnpin`.
+ impl<'pin, T, U> ::pin_project::__private::Unpin for Struct<T, U> where
+ ::pin_project::__private::Wrapper<'pin, Self>: ::pin_project::UnsafeUnpin
+ {
+ }
+
+ // 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> {}
+ // A dummy impl of `PinnedDrop`, to ensure that users don't accidentally
+ // write a non-functional `PinnedDrop` impls.
+ #[doc(hidden)]
+ impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: ::pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
+
+fn main() {}
--- /dev/null
+// See ./unsafe_unpin-expanded.rs for generated code.
+
+#![allow(dead_code)]
+
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project(UnsafeUnpin)]
+pub struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
+
+fn main() {}
--- /dev/null
+//! A crate for safe and ergonomic [pin-projection].
+//!
+//! # Examples
+//!
+//! [`#[pin_project]`][`pin_project`] attribute creates projection types
+//! covering all the fields of struct or enum.
+//!
+//! ```rust
+//! use std::pin::Pin;
+//!
+//! use pin_project::pin_project;
+//!
+//! #[pin_project]
+//! struct Struct<T, U> {
+//! #[pin]
+//! pinned: T,
+//! unpinned: U,
+//! }
+//!
+//! impl<T, U> Struct<T, U> {
+//! 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
+//! }
+//! }
+//! ```
+//!
+//! [*code like this will be generated*][struct-default-expanded]
+//!
+//! To use `#[pin_project]` on enums, you need to name the projection type
+//! returned from the method.
+//!
+//! ```rust
+//! use std::pin::Pin;
+//!
+//! use pin_project::pin_project;
+//!
+//! #[pin_project(project = EnumProj)]
+//! enum Enum<T, U> {
+//! Pinned(#[pin] T),
+//! Unpinned(U),
+//! }
+//!
+//! impl<T, U> Enum<T, U> {
+//! fn method(self: Pin<&mut Self>) {
+//! match self.project() {
+//! EnumProj::Pinned(x) => {
+//! let _: Pin<&mut T> = x;
+//! }
+//! EnumProj::Unpinned(y) => {
+//! let _: &mut U = y;
+//! }
+//! }
+//! }
+//! }
+//! ```
+//!
+//! [*code like this will be generated*][enum-default-expanded]
+//!
+//! See [`#[pin_project]`][`pin_project`] attribute for more details, and
+//! see [examples] directory for more examples and generated code.
+//!
+//! [examples]: https://github.com/taiki-e/pin-project/blob/HEAD/examples/README.md
+//! [enum-default-expanded]: https://github.com/taiki-e/pin-project/blob/HEAD/examples/enum-default-expanded.rs
+//! [pin-projection]: core::pin#projections-and-structural-pinning
+//! [struct-default-expanded]: https://github.com/taiki-e/pin-project/blob/HEAD/examples/struct-default-expanded.rs
+
+#![no_std]
+#![doc(test(
+ no_crate_inject,
+ attr(
+ deny(warnings, rust_2018_idioms, single_use_lifetimes),
+ allow(dead_code, unused_variables)
+ )
+))]
+#![warn(missing_docs, rust_2018_idioms, single_use_lifetimes, unreachable_pub)]
+#![warn(
+ clippy::pedantic,
+ // lints for public library
+ clippy::alloc_instead_of_core,
+ clippy::exhaustive_enums,
+ clippy::exhaustive_structs,
+ clippy::std_instead_of_alloc,
+ clippy::std_instead_of_core,
+ // lints that help writing unsafe code
+ clippy::default_union_representation,
+ clippy::trailing_empty_array,
+ clippy::transmute_undefined_repr,
+ clippy::undocumented_unsafe_blocks,
+)]
+#![allow(clippy::needless_doctest_main)]
+
+#[doc(inline)]
+pub use pin_project_internal::pin_project;
+#[doc(inline)]
+pub use pin_project_internal::pinned_drop;
+
+/// A trait used for custom implementations of [`Unpin`].
+///
+/// This trait is used in conjunction with the `UnsafeUnpin` argument to
+/// the [`#[pin_project]`][macro@pin_project] attribute.
+///
+/// # Safety
+///
+/// The Rust [`Unpin`] trait is safe to implement - by itself,
+/// implementing it cannot lead to [undefined behavior][undefined-behavior].
+/// Undefined behavior can only occur when other unsafe code is used.
+///
+/// It turns out that using pin projections, which requires unsafe code,
+/// imposes additional requirements on an [`Unpin`] impl. Normally, all of this
+/// unsafety is contained within this crate, ensuring that it's impossible for
+/// you to violate any of the guarantees required by pin projection.
+///
+/// However, things change if you want to provide a custom [`Unpin`] impl
+/// for your `#[pin_project]` type. As stated in [the Rust
+/// 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`] -
+/// this crate will generate an [`Unpin`] impl for your type that 'forwards' to
+/// your `UnsafeUnpin` impl. However, this trait is `unsafe` - since your type
+/// uses structural pinning (otherwise, you wouldn't be using this crate!),
+/// you must be sure that your `UnsafeUnpin` impls follows all of
+/// the requirements for an [`Unpin`] impl of a structurally-pinned type.
+///
+/// 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.
+///
+/// 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
+///
+/// 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};
+///
+/// #[pin_project(UnsafeUnpin)]
+/// struct Struct<K, V> {
+/// #[pin]
+/// field_1: K,
+/// field_2: V,
+/// }
+///
+/// unsafe impl<K, V> UnsafeUnpin for Struct<K, V> where K: Unpin + Clone {}
+/// ```
+///
+/// [`PhantomPinned`]: core::marker::PhantomPinned
+/// [cargo-geiger]: https://github.com/rust-secure-code/cargo-geiger
+/// [pin-projection]: core::pin#projections-and-structural-pinning
+/// [undefined-behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
+pub unsafe trait UnsafeUnpin {}
+
+// Not public API.
+#[doc(hidden)]
+pub mod __private {
+ use core::mem::ManuallyDrop;
+ #[doc(hidden)]
+ pub use core::{
+ marker::{PhantomData, PhantomPinned, Unpin},
+ ops::Drop,
+ pin::Pin,
+ ptr,
+ };
+
+ #[doc(hidden)]
+ pub use pin_project_internal::__PinProjectInternalDerive;
+
+ use super::UnsafeUnpin;
+
+ // An internal trait used for custom implementations of [`Drop`].
+ //
+ // **Do not call or implement this trait directly.**
+ //
+ // # Why this trait is private and `#[pinned_drop]` attribute is needed?
+ //
+ // 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][rust-lang/rust#62360].
+ //
+ // 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,
+ // this crate prevent users from calling `PinnedDrop::drop` in safe code.
+ //
+ // This allows implementing [`Drop`] safely using `#[pinned_drop]`.
+ // Also by using the [`drop`] function just like dropping a type that directly
+ // implements [`Drop`], can drop safely a type that implements `PinnedDrop`.
+ //
+ // [rust-lang/rust#62360]: https://github.com/rust-lang/rust/pull/62360
+ #[doc(hidden)]
+ pub trait PinnedDrop {
+ #[doc(hidden)]
+ unsafe fn drop(self: Pin<&mut Self>);
+ }
+
+ // This is an internal helper struct used by `pin-project-internal`.
+ // This allows us to force an error if the user tries to provide
+ // a regular `Unpin` impl when they specify the `UnsafeUnpin` argument.
+ // This is why we need Wrapper:
+ //
+ // Supposed we have the following code:
+ //
+ // ```rust
+ // #[pin_project(UnsafeUnpin)]
+ // struct MyStruct<T> {
+ // #[pin] field: T
+ // }
+ //
+ // 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!
+ //
+ // 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 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.
+ //
+ // 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 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);
+
+ // SAFETY: `T` implements UnsafeUnpin.
+ unsafe impl<T: ?Sized + UnsafeUnpin> UnsafeUnpin for Wrapper<'_, T> {}
+
+ // 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>(PhantomData<&'a ()>, PhantomData<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>(*mut T);
+
+ impl<T: ?Sized> UnsafeDropInPlaceGuard<T> {
+ #[doc(hidden)]
+ pub unsafe fn new(ptr: *mut T) -> Self {
+ Self(ptr)
+ }
+ }
+
+ impl<T: ?Sized> Drop for UnsafeDropInPlaceGuard<T> {
+ fn drop(&mut self) {
+ // SAFETY: the caller of `UnsafeDropInPlaceGuard::new` must guarantee
+ // that `ptr` is valid for drop when this guard is destructed.
+ 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> {
+ target: *mut T,
+ value: ManuallyDrop<T>,
+ }
+
+ impl<T> UnsafeOverwriteGuard<T> {
+ #[doc(hidden)]
+ pub unsafe fn new(target: *mut T, value: T) -> Self {
+ Self { target, value: ManuallyDrop::new(value) }
+ }
+ }
+
+ impl<T> Drop for UnsafeOverwriteGuard<T> {
+ fn drop(&mut self) {
+ // SAFETY: the caller of `UnsafeOverwriteGuard::new` must guarantee
+ // that `target` is valid for writes when this guard is destructed.
+ unsafe {
+ ptr::write(self.target, ptr::read(&*self.value));
+ }
+ }
+ }
+}
--- /dev/null
+# Tests
+
+To run all tests, run the following command:
+
+```sh
+cargo +nightly test --all
+```
+
+## UI tests (`ui`, `compiletest.rs`)
+
+This checks errors detected by the macro or the Rust compiler in the resulting
+expanded code.
+
+To run this test, run the following command:
+
+```sh
+cargo +nightly test --test compiletest
+```
+
+Locally, this test updates the files in the `ui` directory if there are
+changes to the generated code. If there are any changes to the files in the
+`ui` directory after running the test, please commit them.
+
+See also [`trybuild` documentation](https://docs.rs/trybuild).
+
+## Expansion tests (`expand`, `expandtest.rs`)
+
+Similar to ui tests, but instead of checking the compiler output, this checks
+the code generated by macros.
+
+See [examples](../examples/README.md) for descriptions of what the generated
+code does, and why it needs to be generated.
+
+To run this test, run the following command:
+
+```sh
+cargo +nightly test --test expandtest
+```
+
+Locally, this test updates the files in the `expand` directory if there are
+changes to the generated code. If there are any changes to the files in the
+`expand` directory after running the test, please commit them.
+
+See also [`macrotest` documentation](https://docs.rs/macrotest).
--- /dev/null
+#![allow(dead_code, unused_macros)]
+
+macro_rules! assert_unpin {
+ ($ty:ty) => {
+ static_assertions::assert_impl_all!($ty: Unpin);
+ };
+}
+macro_rules! assert_not_unpin {
+ ($ty:ty) => {
+ static_assertions::assert_not_impl_all!($ty: Unpin);
+ };
+}
--- /dev/null
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+#![allow(dead_code)]
+
+// Refs: https://doc.rust-lang.org/reference/attributes.html
+
+#[macro_use]
+mod auxiliary;
+
+use std::{marker::PhantomPinned, pin::Pin};
+
+use pin_project::pin_project;
+
+struct Always;
+
+// Use this type to check that `cfg(any())` is working properly.
+struct Never(PhantomPinned);
+
+#[test]
+fn cfg() {
+ // structs
+
+ #[pin_project(project_replace)]
+ struct SameName {
+ #[cfg(not(any()))]
+ #[pin]
+ inner: Always,
+ #[cfg(any())]
+ #[pin]
+ inner: Never,
+ }
+
+ assert_unpin!(SameName);
+
+ let _ = SameName { inner: Always };
+
+ #[pin_project(project_replace)]
+ struct DifferentName {
+ #[cfg(not(any()))]
+ #[pin]
+ a: Always,
+ #[cfg(any())]
+ #[pin]
+ n: Never,
+ }
+
+ assert_unpin!(DifferentName);
+
+ let _ = DifferentName { a: Always };
+
+ #[pin_project(project_replace)]
+ struct TupleStruct(
+ #[cfg(not(any()))]
+ #[pin]
+ Always,
+ #[cfg(any())]
+ #[pin]
+ Never,
+ );
+
+ assert_unpin!(TupleStruct);
+
+ let _ = TupleStruct(Always);
+
+ // enums
+
+ #[pin_project(
+ project = VariantProj,
+ project_ref = VariantProjRef,
+ project_replace = VariantProjOwn,
+ )]
+ enum Variant {
+ #[cfg(not(any()))]
+ Inner(#[pin] Always),
+ #[cfg(any())]
+ Inner(#[pin] Never),
+
+ #[cfg(not(any()))]
+ A(#[pin] Always),
+ #[cfg(any())]
+ N(#[pin] Never),
+ }
+
+ assert_unpin!(Variant);
+
+ let _ = Variant::Inner(Always);
+ let _ = Variant::A(Always);
+
+ #[pin_project(
+ project = FieldProj,
+ project_ref = FieldProjRef,
+ project_replace = FieldProjOwn,
+ )]
+ enum Field {
+ SameName {
+ #[cfg(not(any()))]
+ #[pin]
+ inner: Always,
+ #[cfg(any())]
+ #[pin]
+ inner: Never,
+ },
+ DifferentName {
+ #[cfg(not(any()))]
+ #[pin]
+ a: Always,
+ #[cfg(any())]
+ #[pin]
+ n: Never,
+ },
+ TupleVariant(
+ #[cfg(not(any()))]
+ #[pin]
+ Always,
+ #[cfg(any())]
+ #[pin]
+ Never,
+ ),
+ }
+
+ assert_unpin!(Field);
+
+ let _ = Field::SameName { inner: Always };
+ let _ = Field::DifferentName { a: Always };
+ let _ = Field::TupleVariant(Always);
+}
+
+#[test]
+fn cfg_attr() {
+ #[pin_project(project_replace)]
+ struct SameCfg {
+ #[cfg(not(any()))]
+ #[cfg_attr(not(any()), pin)]
+ inner: Always,
+ #[cfg(any())]
+ #[cfg_attr(any(), pin)]
+ inner: Never,
+ }
+
+ assert_unpin!(SameCfg);
+
+ let mut x = SameCfg { inner: Always };
+ let x = Pin::new(&mut x).project();
+ let _: Pin<&mut Always> = x.inner;
+
+ #[pin_project(project_replace)]
+ struct DifferentCfg {
+ #[cfg(not(any()))]
+ #[cfg_attr(any(), pin)]
+ inner: Always,
+ #[cfg(any())]
+ #[cfg_attr(not(any()), pin)]
+ inner: Never,
+ }
+
+ assert_unpin!(DifferentCfg);
+
+ let mut x = DifferentCfg { inner: Always };
+ let x = Pin::new(&mut x).project();
+ let _: &mut Always = x.inner;
+
+ #[cfg_attr(not(any()), pin_project)]
+ struct Foo<T> {
+ #[cfg_attr(not(any()), pin)]
+ inner: T,
+ }
+
+ assert_unpin!(Foo<()>);
+ assert_not_unpin!(Foo<PhantomPinned>);
+
+ let mut x = Foo { inner: 0_u8 };
+ let x = Pin::new(&mut x).project();
+ let _: Pin<&mut u8> = x.inner;
+}
+
+#[test]
+fn cfg_attr_any_packed() {
+ // Since `cfg(any())` can never be true, it is okay for this to pass.
+ #[pin_project(project_replace)]
+ #[cfg_attr(any(), repr(packed))]
+ struct Struct {
+ #[pin]
+ f: u32,
+ }
+}
--- /dev/null
+#![cfg(not(miri))]
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+
+use std::env;
+
+#[rustversion::attr(not(nightly), ignore)]
+#[test]
+fn ui() {
+ if env::var_os("CI").is_none() {
+ env::set_var("TRYBUILD", "overwrite");
+ }
+
+ let t = trybuild::TestCases::new();
+ t.compile_fail("tests/ui/**/*.rs");
+ t.pass("tests/run-pass/**/*.rs");
+}
--- /dev/null
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+
+// Refs: https://doc.rust-lang.org/reference/destructors.html
+
+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> {
+ #[allow(dead_code)] // false positive that fixed in Rust 1.38
+ StructPinned {
+ #[pin]
+ f1: D<'a>,
+ #[pin]
+ f2: D<'a>,
+ },
+ #[allow(dead_code)] // false positive that fixed in Rust 1.38
+ 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)));
+ }
+}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = EnumProj, project_ref = EnumProjRef))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+enum EnumProj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ },
+ Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+enum EnumProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U) },
+ Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> EnumProj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProj::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProj::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProj::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> EnumProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProjRef::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProjRef::Unit,
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = EnumProj, project_ref = EnumProjRef)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private())]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ 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)]
+ #[allow(clippy::ref_option_ref)]
+ 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> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private())]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(
+ __private(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn
+ )
+)]
+enum Enum<T, U> {
+ Struct { #[pin] pinned1: T, #[pin] pinned2: T, unpinned1: U, unpinned2: U },
+ Tuple(#[pin] T, #[pin] T, U, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+enum EnumProj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned1: ::pin_project::__private::Pin<&'pin mut (T)>,
+ pinned2: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned1: &'pin mut (U),
+ unpinned2: &'pin mut (U),
+ },
+ Tuple(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ &'pin mut (U),
+ ),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+enum EnumProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned1: ::pin_project::__private::Pin<&'pin (T)>,
+ pinned2: ::pin_project::__private::Pin<&'pin (T)>,
+ unpinned1: &'pin (U),
+ unpinned2: &'pin (U),
+ },
+ Tuple(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ &'pin (U),
+ ),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(variant_size_differences)]
+#[allow(clippy::large_enum_variant)]
+enum EnumProjOwn<T, U> {
+ Struct {
+ pinned1: ::pin_project::__private::PhantomData<T>,
+ pinned2: ::pin_project::__private::PhantomData<T>,
+ unpinned1: U,
+ unpinned2: U,
+ },
+ Tuple(
+ ::pin_project::__private::PhantomData<T>,
+ ::pin_project::__private::PhantomData<T>,
+ U,
+ U,
+ ),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> EnumProj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned1, pinned2, unpinned1, unpinned2 } => {
+ EnumProj::Struct {
+ pinned1: _pin_project::__private::Pin::new_unchecked(
+ pinned1,
+ ),
+ pinned2: _pin_project::__private::Pin::new_unchecked(
+ pinned2,
+ ),
+ unpinned1,
+ unpinned2,
+ }
+ }
+ Self::Tuple(_0, _1, _2, _3) => {
+ EnumProj::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _pin_project::__private::Pin::new_unchecked(_1),
+ _2,
+ _3,
+ )
+ }
+ Self::Unit => EnumProj::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> EnumProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned1, pinned2, unpinned1, unpinned2 } => {
+ EnumProjRef::Struct {
+ pinned1: _pin_project::__private::Pin::new_unchecked(
+ pinned1,
+ ),
+ pinned2: _pin_project::__private::Pin::new_unchecked(
+ pinned2,
+ ),
+ unpinned1,
+ unpinned2,
+ }
+ }
+ Self::Tuple(_0, _1, _2, _3) => {
+ EnumProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _pin_project::__private::Pin::new_unchecked(_1),
+ _2,
+ _3,
+ )
+ }
+ Self::Unit => EnumProjRef::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> EnumProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ match &mut *__self_ptr {
+ Self::Struct { pinned1, pinned2, unpinned1, unpinned2 } => {
+ let __result = EnumProjOwn::Struct {
+ pinned1: _pin_project::__private::PhantomData,
+ pinned2: _pin_project::__private::PhantomData,
+ unpinned1: _pin_project::__private::ptr::read(unpinned1),
+ unpinned2: _pin_project::__private::ptr::read(unpinned2),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned2,
+ );
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned1,
+ );
+ }
+ __result
+ }
+ Self::Tuple(_0, _1, _2, _3) => {
+ let __result = EnumProjOwn::Tuple(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_2),
+ _pin_project::__private::ptr::read(_3),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _1,
+ );
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ Self::Unit => {
+ let __result = EnumProjOwn::Unit;
+ {}
+ __result
+ }
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ __field2: T,
+ __field3: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned1: T,
+ #[pin]
+ pinned2: T,
+ unpinned1: U,
+ unpinned2: U,
+ },
+ Tuple(#[pin] T, #[pin] T, U, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace))]
+struct Struct<T, U> {
+ #[pin]
+ pinned1: T,
+ #[pin]
+ pinned2: T,
+ unpinned1: U,
+ unpinned2: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __StructProjection<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned1: ::pin_project::__private::Pin<&'pin mut (T)>,
+ pinned2: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned1: &'pin mut (U),
+ unpinned2: &'pin mut (U),
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __StructProjectionRef<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned1: ::pin_project::__private::Pin<&'pin (T)>,
+ pinned2: ::pin_project::__private::Pin<&'pin (T)>,
+ unpinned1: &'pin (U),
+ unpinned2: &'pin (U),
+ }
+ #[allow(dead_code)]
+ struct __StructProjectionOwned<T, U> {
+ pinned1: ::pin_project::__private::PhantomData<T>,
+ pinned2: ::pin_project::__private::PhantomData<T>,
+ unpinned1: U,
+ unpinned2: U,
+ }
+ impl<T, U> Struct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __StructProjection<'pin, T, U> {
+ unsafe {
+ let Self { pinned1, pinned2, unpinned1, unpinned2 } = self
+ .get_unchecked_mut();
+ __StructProjection {
+ pinned1: _pin_project::__private::Pin::new_unchecked(pinned1),
+ pinned2: _pin_project::__private::Pin::new_unchecked(pinned2),
+ unpinned1,
+ unpinned2,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __StructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self { pinned1, pinned2, unpinned1, unpinned2 } = self.get_ref();
+ __StructProjectionRef {
+ pinned1: _pin_project::__private::Pin::new_unchecked(pinned1),
+ pinned2: _pin_project::__private::Pin::new_unchecked(pinned2),
+ unpinned1,
+ unpinned2,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ 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 __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self { pinned1, pinned2, unpinned1, unpinned2 } = &mut *__self_ptr;
+ let __result = __StructProjectionOwned {
+ pinned1: _pin_project::__private::PhantomData,
+ pinned2: _pin_project::__private::PhantomData,
+ unpinned1: _pin_project::__private::ptr::read(unpinned1),
+ unpinned2: _pin_project::__private::ptr::read(unpinned2),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned2,
+ );
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned1,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned1;
+ let _ = &this.pinned2;
+ let _ = &this.unpinned1;
+ let _ = &this.unpinned2;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace)]
+struct Struct<T, U> {
+ #[pin]
+ pinned1: T,
+ #[pin]
+ pinned2: T,
+ unpinned1: U,
+ unpinned2: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace))]
+struct TupleStruct<T, U>(#[pin] T, #[pin] T, U, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ struct __TupleStructProjectionOwned<T, U>(
+ ::pin_project::__private::PhantomData<T>,
+ ::pin_project::__private::PhantomData<T>,
+ U,
+ U,
+ );
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1, _2, _3) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _pin_project::__private::Pin::new_unchecked(_1),
+ _2,
+ _3,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1, _2, _3) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _pin_project::__private::Pin::new_unchecked(_1),
+ _2,
+ _3,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> __TupleStructProjectionOwned<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self(_0, _1, _2, _3) = &mut *__self_ptr;
+ let __result = __TupleStructProjectionOwned(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_2),
+ _pin_project::__private::ptr::read(_3),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _1,
+ );
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ let _ = &this.2;
+ let _ = &this.3;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace)]
+struct TupleStruct<T, U>(#[pin] T, #[pin] T, U, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = Proj, project_ref = ProjRef, project_replace = ProjOwn))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+enum Proj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ },
+ Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+enum ProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U) },
+ Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(variant_size_differences)]
+#[allow(clippy::large_enum_variant)]
+enum ProjOwn<T, U> {
+ Struct { pinned: ::pin_project::__private::PhantomData<T>, unpinned: U },
+ Tuple(::pin_project::__private::PhantomData<T>, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> Proj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned, unpinned } => {
+ Proj::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ Proj::Tuple(_pin_project::__private::Pin::new_unchecked(_0), _1)
+ }
+ Self::Unit => Proj::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> ProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned, unpinned } => {
+ ProjRef::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ ProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => ProjRef::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> ProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ match &mut *__self_ptr {
+ Self::Struct { pinned, unpinned } => {
+ let __result = ProjOwn::Struct {
+ pinned: _pin_project::__private::PhantomData,
+ unpinned: _pin_project::__private::ptr::read(unpinned),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned,
+ );
+ }
+ __result
+ }
+ Self::Tuple(_0, _1) => {
+ let __result = ProjOwn::Tuple(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_1),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ Self::Unit => {
+ let __result = ProjOwn::Unit;
+ {}
+ __result
+ }
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = Proj, project_ref = ProjRef, project_replace = ProjOwn)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = Proj))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+enum Proj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ },
+ Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> Proj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned, unpinned } => {
+ Proj::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ Proj::Tuple(_pin_project::__private::Pin::new_unchecked(_0), _1)
+ }
+ Self::Unit => Proj::Unit,
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = Proj)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private())]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {}
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace = ProjOwn))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(variant_size_differences)]
+#[allow(clippy::large_enum_variant)]
+enum ProjOwn<T, U> {
+ Struct { pinned: ::pin_project::__private::PhantomData<T>, unpinned: U },
+ Tuple(::pin_project::__private::PhantomData<T>, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> ProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ match &mut *__self_ptr {
+ Self::Struct { pinned, unpinned } => {
+ let __result = ProjOwn::Struct {
+ pinned: _pin_project::__private::PhantomData,
+ unpinned: _pin_project::__private::ptr::read(unpinned),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned,
+ );
+ }
+ __result
+ }
+ Self::Tuple(_0, _1) => {
+ let __result = ProjOwn::Tuple(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_1),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ Self::Unit => {
+ let __result = ProjOwn::Unit;
+ {}
+ __result
+ }
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace = ProjOwn)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_ref = ProjRef))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+enum ProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U) },
+ Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> ProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned, unpinned } => {
+ ProjRef::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ ProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => ProjRef::Unit,
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_ref = ProjRef)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = Proj, project_ref = ProjRef, project_replace = ProjOwn))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+struct Proj<'pin, T, U>
+where
+ Struct<T, U>: 'pin,
+{
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+struct ProjRef<'pin, T, U>
+where
+ Struct<T, U>: 'pin,
+{
+ pinned: ::pin_project::__private::Pin<&'pin (T)>,
+ unpinned: &'pin (U),
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+struct ProjOwn<T, U> {
+ pinned: ::pin_project::__private::PhantomData<T>,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Struct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> Proj<'pin, T, U> {
+ unsafe {
+ let Self { pinned, unpinned } = self.get_unchecked_mut();
+ Proj {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> ProjRef<'pin, T, U> {
+ unsafe {
+ let Self { pinned, unpinned } = self.get_ref();
+ ProjRef {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> ProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self { pinned, unpinned } = &mut *__self_ptr;
+ let __result = ProjOwn {
+ pinned: _pin_project::__private::PhantomData,
+ unpinned: _pin_project::__private::ptr::read(unpinned),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = Proj, project_ref = ProjRef, project_replace = ProjOwn)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = Proj))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+struct Proj<'pin, T, U>
+where
+ Struct<T, U>: 'pin,
+{
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ 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> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> Proj<'pin, T, U> {
+ unsafe {
+ let Self { pinned, unpinned } = self.get_unchecked_mut();
+ Proj {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = Proj)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private())]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ 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)]
+ #[allow(clippy::ref_option_ref)]
+ 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> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace = ProjOwn))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+struct ProjOwn<T, U> {
+ pinned: ::pin_project::__private::PhantomData<T>,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ 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)]
+ #[allow(clippy::ref_option_ref)]
+ 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> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> ProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self { pinned, unpinned } = &mut *__self_ptr;
+ let __result = ProjOwn {
+ pinned: _pin_project::__private::PhantomData,
+ unpinned: _pin_project::__private::ptr::read(unpinned),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace = ProjOwn)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_ref = ProjRef))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+struct ProjRef<'pin, T, U>
+where
+ Struct<T, U>: 'pin,
+{
+ pinned: ::pin_project::__private::Pin<&'pin (T)>,
+ unpinned: &'pin (U),
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __StructProjection<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ }
+ impl<T, U> Struct<T, U> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> ProjRef<'pin, T, U> {
+ unsafe {
+ let Self { pinned, unpinned } = self.get_ref();
+ ProjRef {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_ref = ProjRef)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = Proj, project_ref = ProjRef, project_replace = ProjOwn))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+struct Proj<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+)
+where
+ TupleStruct<T, U>: 'pin;
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+struct ProjRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+)
+where
+ TupleStruct<T, U>: 'pin;
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+struct ProjOwn<T, U>(::pin_project::__private::PhantomData<T>, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> Proj<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ Proj(_pin_project::__private::Pin::new_unchecked(_0), _1)
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> ProjRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ ProjRef(_pin_project::__private::Pin::new_unchecked(_0), _1)
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> ProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self(_0, _1) = &mut *__self_ptr;
+ let __result = ProjOwn(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_1),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = Proj, project_ref = ProjRef, project_replace = ProjOwn)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = Proj))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+struct Proj<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+)
+where
+ TupleStruct<T, U>: 'pin;
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> Proj<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ Proj(_pin_project::__private::Pin::new_unchecked(_0), _1)
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = Proj)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private())]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace = ProjOwn))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+struct ProjOwn<T, U>(::pin_project::__private::PhantomData<T>, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> ProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self(_0, _1) = &mut *__self_ptr;
+ let __result = ProjOwn(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_1),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace = ProjOwn)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_ref = ProjRef))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+struct ProjRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+)
+where
+ TupleStruct<T, U>: 'pin;
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> ProjRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ ProjRef(_pin_project::__private::Pin::new_unchecked(_0), _1)
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_ref = ProjRef)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(!Unpin, project = EnumProj, project_ref = EnumProjRef))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+enum EnumProj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ },
+ Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+enum EnumProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U) },
+ Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> EnumProj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProj::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProj::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProj::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> EnumProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProjRef::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProjRef::Unit,
+ }
+ }
+ }
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ _pin_project::__private::Wrapper<
+ 'pin,
+ _pin_project::__private::PhantomPinned,
+ >: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ _pin_project::__private::Wrapper<
+ 'pin,
+ _pin_project::__private::PhantomPinned,
+ >: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(!Unpin, project = EnumProj, project_ref = EnumProjRef)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(!Unpin))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ 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)]
+ #[allow(clippy::ref_option_ref)]
+ 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> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ _pin_project::__private::Wrapper<
+ 'pin,
+ _pin_project::__private::PhantomPinned,
+ >: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(!Unpin)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(!Unpin))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for TupleStruct<T, U>
+ where
+ _pin_project::__private::Wrapper<
+ 'pin,
+ _pin_project::__private::PhantomPinned,
+ >: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ _pin_project::__private::Wrapper<
+ 'pin,
+ _pin_project::__private::PhantomPinned,
+ >: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(!Unpin)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use std::pin::Pin;
+use pin_project::{pin_project, pinned_drop};
+#[pin(__private(PinnedDrop, project = EnumProj, project_ref = EnumProjRef))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+enum EnumProj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ },
+ Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+enum EnumProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U) },
+ Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> EnumProj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProj::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProj::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProj::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> EnumProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProjRef::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProjRef::Unit,
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ impl<T, U> _pin_project::__private::Drop for Enum<T, U> {
+ fn drop(&mut self) {
+ unsafe {
+ let __pinned_self = _pin_project::__private::Pin::new_unchecked(self);
+ _pin_project::__private::PinnedDrop::drop(__pinned_self);
+ }
+ }
+ }
+};
+#[doc(hidden)]
+impl<T, U> ::pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: Pin<&mut Self>) {
+ #[allow(clippy::needless_pass_by_value)]
+ fn __drop_inner<T, U>(__self: Pin<&mut Enum<T, U>>) {
+ fn __drop_inner() {}
+ let _ = __self;
+ }
+ __drop_inner(self);
+ }
+}
+fn main() {}
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project(PinnedDrop, project = EnumProj, project_ref = EnumProjRef)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+#[pinned_drop]
+impl<T, U> PinnedDrop for Enum<T, U> {
+ fn drop(self: Pin<&mut Self>) {
+ let _ = self;
+ }
+}
+
+fn main() {}
--- /dev/null
+use std::pin::Pin;
+use pin_project::{pin_project, pinned_drop};
+#[pin(__private(PinnedDrop))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ 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)]
+ #[allow(clippy::ref_option_ref)]
+ 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> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ impl<T, U> _pin_project::__private::Drop for Struct<T, U> {
+ fn drop(&mut self) {
+ unsafe {
+ let __pinned_self = _pin_project::__private::Pin::new_unchecked(self);
+ _pin_project::__private::PinnedDrop::drop(__pinned_self);
+ }
+ }
+ }
+};
+#[doc(hidden)]
+impl<T, U> ::pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: Pin<&mut Self>) {
+ #[allow(clippy::needless_pass_by_value)]
+ fn __drop_inner<T, U>(__self: Pin<&mut Struct<T, U>>) {
+ fn __drop_inner() {}
+ let _ = __self;
+ }
+ __drop_inner(self);
+ }
+}
+fn main() {}
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project(PinnedDrop)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+#[pinned_drop]
+impl<T, U> PinnedDrop for Struct<T, U> {
+ fn drop(self: Pin<&mut Self>) {
+ let _ = self;
+ }
+}
+
+fn main() {}
--- /dev/null
+use std::pin::Pin;
+use pin_project::{pin_project, pinned_drop};
+#[pin(__private(PinnedDrop))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ impl<T, U> _pin_project::__private::Drop for TupleStruct<T, U> {
+ fn drop(&mut self) {
+ unsafe {
+ let __pinned_self = _pin_project::__private::Pin::new_unchecked(self);
+ _pin_project::__private::PinnedDrop::drop(__pinned_self);
+ }
+ }
+ }
+};
+#[doc(hidden)]
+impl<T, U> ::pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: Pin<&mut Self>) {
+ #[allow(clippy::needless_pass_by_value)]
+ fn __drop_inner<T, U>(__self: Pin<&mut TupleStruct<T, U>>) {
+ fn __drop_inner() {}
+ let _ = __self;
+ }
+ __drop_inner(self);
+ }
+}
+fn main() {}
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project(PinnedDrop)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+#[pinned_drop]
+impl<T, U> PinnedDrop for TupleStruct<T, U> {
+ fn drop(self: Pin<&mut Self>) {
+ let _ = self;
+ }
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace = EnumProjOwn))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(variant_size_differences)]
+#[allow(clippy::large_enum_variant)]
+enum EnumProjOwn<T, U> {
+ Struct { pinned: ::pin_project::__private::PhantomData<T>, unpinned: U },
+ Tuple(::pin_project::__private::PhantomData<T>, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> EnumProjOwn<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ match &mut *__self_ptr {
+ Self::Struct { pinned, unpinned } => {
+ let __result = EnumProjOwn::Struct {
+ pinned: _pin_project::__private::PhantomData,
+ unpinned: _pin_project::__private::ptr::read(unpinned),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned,
+ );
+ }
+ __result
+ }
+ Self::Tuple(_0, _1) => {
+ let __result = EnumProjOwn::Tuple(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_1),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ Self::Unit => {
+ let __result = EnumProjOwn::Unit;
+ {}
+ __result
+ }
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace = EnumProjOwn)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ 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)]
+ #[allow(clippy::ref_option_ref)]
+ struct __StructProjectionRef<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pinned: ::pin_project::__private::Pin<&'pin (T)>,
+ unpinned: &'pin (U),
+ }
+ #[allow(dead_code)]
+ struct __StructProjectionOwned<T, U> {
+ pinned: ::pin_project::__private::PhantomData<T>,
+ unpinned: U,
+ }
+ impl<T, U> Struct<T, U> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ 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 __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self { pinned, unpinned } = &mut *__self_ptr;
+ let __result = __StructProjectionOwned {
+ pinned: _pin_project::__private::PhantomData,
+ unpinned: _pin_project::__private::ptr::read(unpinned),
+ };
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ pinned,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project_replace))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ struct __TupleStructProjectionOwned<T, U>(
+ ::pin_project::__private::PhantomData<T>,
+ U,
+ );
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ fn project_replace(
+ self: _pin_project::__private::Pin<&mut Self>,
+ __replacement: Self,
+ ) -> __TupleStructProjectionOwned<T, U> {
+ unsafe {
+ let __self_ptr: *mut Self = self.get_unchecked_mut();
+ let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(
+ __self_ptr,
+ __replacement,
+ );
+ let Self(_0, _1) = &mut *__self_ptr;
+ let __result = __TupleStructProjectionOwned(
+ _pin_project::__private::PhantomData,
+ _pin_project::__private::ptr::read(_1),
+ );
+ {
+ let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(
+ _0,
+ );
+ }
+ __result
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private(project = EnumProj, project_ref = EnumProjRef))]
+pub enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+pub(crate) enum EnumProj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ },
+ Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+pub(crate) enum EnumProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U) },
+ Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ pub(crate) fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> EnumProj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProj::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProj::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProj::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ pub(crate) fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> EnumProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProjRef::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProjRef::Unit,
+ }
+ }
+ }
+ }
+ #[allow(missing_debug_implementations)]
+ pub struct __Enum<'pin, T, U> {
+ __pin_project_use_generics: _pin_project::__private::AlwaysUnpin<
+ 'pin,
+ (
+ _pin_project::__private::PhantomData<T>,
+ _pin_project::__private::PhantomData<U>,
+ ),
+ >,
+ __field0: T,
+ __field1: T,
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum<T, U>
+ where
+ __Enum<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project = EnumProj, project_ref = EnumProjRef)]
+pub enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private())]
+pub struct Struct<T, U> {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ pub(crate) struct __StructProjection<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pub pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ pub unpinned: &'pin mut (U),
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ pub(crate) struct __StructProjectionRef<'pin, T, U>
+ where
+ Struct<T, U>: 'pin,
+ {
+ pub pinned: ::pin_project::__private::Pin<&'pin (T)>,
+ pub unpinned: &'pin (U),
+ }
+ impl<T, U> Struct<T, U> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ #[allow(missing_debug_implementations)]
+ pub 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,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Struct<T, U>
+ where
+ __Struct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+pub struct Struct<T, U> {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+}
+
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+#[pin(__private())]
+pub struct TupleStruct<T, U>(#[pin] pub T, pub U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ pub(crate) struct __TupleStructProjection<'pin, T, U>(
+ pub ::pin_project::__private::Pin<&'pin mut (T)>,
+ pub &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ pub(crate) struct __TupleStructProjectionRef<'pin, T, U>(
+ pub ::pin_project::__private::Pin<&'pin (T)>,
+ pub &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ pub(crate) fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ pub(crate) fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ #[allow(missing_debug_implementations)]
+ pub struct __TupleStruct<'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 TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ #[doc(hidden)]
+ unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for TupleStruct<T, U>
+ where
+ __TupleStruct<'pin, T, U>: _pin_project::__private::Unpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+fn main() {}
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+pub struct TupleStruct<T, U>(#[pin] pub T, pub U);
+
+fn main() {}
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+#[pin(__private(UnsafeUnpin, project = EnumProj, project_ref = EnumProjRef))]
+enum Enum<T, U> {
+ Struct { #[pin] pinned: T, unpinned: U },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::mut_mut)]
+enum EnumProj<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct {
+ pinned: ::pin_project::__private::Pin<&'pin mut (T)>,
+ unpinned: &'pin mut (U),
+ },
+ Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(dead_code)]
+#[allow(clippy::ref_option_ref)]
+enum EnumProjRef<'pin, T, U>
+where
+ Enum<T, U>: 'pin,
+{
+ Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U) },
+ Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)),
+ Unit,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ impl<T, U> Enum<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> EnumProj<'pin, T, U> {
+ unsafe {
+ match self.get_unchecked_mut() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProj::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProj::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProj::Unit,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> EnumProjRef<'pin, T, U> {
+ unsafe {
+ match self.get_ref() {
+ Self::Struct { pinned, unpinned } => {
+ EnumProjRef::Struct {
+ pinned: _pin_project::__private::Pin::new_unchecked(pinned),
+ unpinned,
+ }
+ }
+ Self::Tuple(_0, _1) => {
+ EnumProjRef::Tuple(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ Self::Unit => EnumProjRef::Unit,
+ }
+ }
+ }
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Enum<T, U>
+ where
+ _pin_project::__private::Wrapper<'pin, Self>: _pin_project::UnsafeUnpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Enum<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+unsafe impl<T: Unpin, U> UnsafeUnpin for Enum<T, U> {}
+fn main() {}
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project(UnsafeUnpin, project = EnumProj, project_ref = EnumProjRef)]
+enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for Enum<T, U> {}
+
+fn main() {}
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+#[pin(__private(UnsafeUnpin))]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ 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)]
+ #[allow(clippy::ref_option_ref)]
+ 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> {
+ #[allow(dead_code)]
+ 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,
+ }
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ 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,
+ }
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &Struct<T, U>) {
+ let _ = &this.pinned;
+ let _ = &this.unpinned;
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for Struct<T, U>
+ where
+ _pin_project::__private::Wrapper<'pin, Self>: _pin_project::UnsafeUnpin,
+ {}
+ 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> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for Struct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
+fn main() {}
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project(UnsafeUnpin)]
+struct Struct<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+}
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
+
+fn main() {}
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+#[pin(__private(UnsafeUnpin))]
+struct TupleStruct<T, U>(#[pin] T, U);
+#[allow(box_pointers)]
+#[allow(deprecated)]
+#[allow(explicit_outlives_requirements)]
+#[allow(single_use_lifetimes)]
+#[allow(unreachable_pub)]
+#[allow(unused_tuple_struct_fields)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::pattern_type_mismatch)]
+#[allow(clippy::redundant_pub_crate)]
+#[allow(clippy::type_repetition_in_bounds)]
+#[allow(unused_qualifications)]
+#[allow(clippy::semicolon_if_nothing_returned)]
+#[allow(clippy::use_self)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+ #[allow(unused_extern_crates)]
+ extern crate pin_project as _pin_project;
+ #[allow(dead_code)]
+ #[allow(clippy::mut_mut)]
+ struct __TupleStructProjection<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin mut (T)>,
+ &'pin mut (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ #[allow(dead_code)]
+ #[allow(clippy::ref_option_ref)]
+ struct __TupleStructProjectionRef<'pin, T, U>(
+ ::pin_project::__private::Pin<&'pin (T)>,
+ &'pin (U),
+ )
+ where
+ TupleStruct<T, U>: 'pin;
+ impl<T, U> TupleStruct<T, U> {
+ #[allow(dead_code)]
+ fn project<'pin>(
+ self: _pin_project::__private::Pin<&'pin mut Self>,
+ ) -> __TupleStructProjection<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_unchecked_mut();
+ __TupleStructProjection(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ #[allow(dead_code)]
+ #[allow(clippy::missing_const_for_fn)]
+ fn project_ref<'pin>(
+ self: _pin_project::__private::Pin<&'pin Self>,
+ ) -> __TupleStructProjectionRef<'pin, T, U> {
+ unsafe {
+ let Self(_0, _1) = self.get_ref();
+ __TupleStructProjectionRef(
+ _pin_project::__private::Pin::new_unchecked(_0),
+ _1,
+ )
+ }
+ }
+ }
+ #[forbid(unaligned_references, safe_packed_borrows)]
+ fn __assert_not_repr_packed<T, U>(this: &TupleStruct<T, U>) {
+ let _ = &this.0;
+ let _ = &this.1;
+ }
+ impl<'pin, T, U> _pin_project::__private::Unpin for TupleStruct<T, U>
+ where
+ _pin_project::__private::Wrapper<'pin, Self>: _pin_project::UnsafeUnpin,
+ {}
+ trait TupleStructMustNotImplDrop {}
+ #[allow(clippy::drop_bounds, drop_bounds)]
+ impl<T: _pin_project::__private::Drop> TupleStructMustNotImplDrop for T {}
+ impl<T, U> TupleStructMustNotImplDrop for TupleStruct<T, U> {}
+ #[doc(hidden)]
+ impl<T, U> _pin_project::__private::PinnedDrop for TupleStruct<T, U> {
+ unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {}
+ }
+};
+unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
+fn main() {}
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project(UnsafeUnpin)]
+struct TupleStruct<T, U>(#[pin] T, U);
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for Struct<T, U> {}
+
+fn main() {}
--- /dev/null
+#![cfg(not(miri))]
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+
+use std::{
+ env,
+ process::{Command, ExitStatus, Stdio},
+};
+
+const PATH: &str = "tests/expand/**/*.rs";
+
+#[rustversion::attr(not(nightly), ignore)]
+#[test]
+fn expandtest() {
+ let is_ci = env::var_os("CI").is_some();
+ let cargo = &*env::var("CARGO").unwrap_or_else(|_| "cargo".into());
+ if !has_command(&[cargo, "expand"]) {
+ if is_ci {
+ panic!("expandtest requires cargo-expand");
+ }
+ return;
+ }
+
+ let args = &["--all-features"];
+ if is_ci {
+ macrotest::expand_without_refresh_args(PATH, args);
+ } else {
+ env::set_var("MACROTEST", "overwrite");
+ macrotest::expand_args(PATH, args);
+ }
+}
+
+fn has_command(command: &[&str]) -> bool {
+ Command::new(command[0])
+ .args(&command[1..])
+ .arg("--version")
+ .stdin(Stdio::null())
+ .stdout(Stdio::null())
+ .stderr(Stdio::null())
+ .status()
+ .as_ref()
+ .map(ExitStatus::success)
+ .unwrap_or(false)
+}
--- /dev/null
+// 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(
+ project = DefaultStructNamedProj,
+ project_ref = DefaultStructNamedProjRef,
+)]
+#[derive(Debug)]
+pub struct DefaultStructNamed<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(
+ project = DefaultTupleStructNamedProj,
+ project_ref = DefaultTupleStructNamedProjRef,
+)]
+#[derive(Debug)]
+pub struct DefaultTupleStructNamed<T, U>(#[pin] pub T, pub U);
+
+#[::pin_project::pin_project(
+ project = DefaultEnumProj,
+ project_ref = DefaultEnumProjRef,
+)]
+#[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,
+ project = PinnedDropEnumProj,
+ project_ref = PinnedDropEnumProjRef,
+)]
+#[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 = ReplaceStructNamedProj,
+ project_ref = ReplaceStructNamedProjRef,
+ project_replace = ReplaceStructNamedProjOwn,
+)]
+#[derive(Debug)]
+pub struct ReplaceStructNamed<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 = ReplaceTupleStructNamedProj,
+ project_ref = ReplaceTupleStructNamedProjRef,
+ project_replace = ReplaceTupleStructNamedProjOwn,
+)]
+#[derive(Debug)]
+pub struct ReplaceTupleStructNamed<T, U>(#[pin] pub T, pub U);
+
+#[::pin_project::pin_project(
+ project = ReplaceEnumProj,
+ project_ref = ReplaceEnumProjRef,
+ project_replace = ReplaceEnumProjOwn,
+)]
+#[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,
+ project = UnsafeUnpinEnumProj,
+ project_ref = UnsafeUnpinEnumProjRef,
+)]
+#[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,
+ project = NotUnpinEnumProj,
+ project_ref = NotUnpinEnumProjRef,
+)]
+#[derive(Debug)]
+pub enum NotUnpinEnum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+}
--- /dev/null
+include!("basic-safe-part.rs");
+
+#[allow(clippy::undocumented_unsafe_blocks)]
+unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
+ ::pin_project::UnsafeUnpin for UnsafeUnpinStruct<T, U>
+{
+}
+#[allow(clippy::undocumented_unsafe_blocks)]
+unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
+ ::pin_project::UnsafeUnpin for UnsafeUnpinTupleStruct<T, U>
+{
+}
+#[allow(clippy::undocumented_unsafe_blocks)]
+unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
+ ::pin_project::UnsafeUnpin for UnsafeUnpinEnum<T, U>
+{
+}
--- /dev/null
+// Check interoperability with rustc and clippy lints.
+
+// for old compilers
+#![allow(unknown_lints)]
+#![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, rust_2021_compatibility)]
+// lints forbidden as a part of future_incompatible, rust_2018_compatibility, and rust_2021_compatibility are not included in the list below.
+// elided_lifetimes_in_paths, explicit_outlives_requirements, unused_extern_crates: as a part of rust_2018_idioms
+// unsafe_op_in_unsafe_fn: requires Rust 1.52. and, we don't generate unsafe fn.
+// non_exhaustive_omitted_patterns: unstable
+// unstable_features: no way to generate #![feature(..)] by macros, expect for unstable inner attribute. and this lint is deprecated: https://doc.rust-lang.org/rustc/lints/listing/allowed-by-default.html#unstable-features
+// unused_crate_dependencies, must_not_suspend: unrelated
+// unsafe_code: checked in forbid_unsafe module
+#![warn(
+ box_pointers,
+ deprecated_in_future,
+ fuzzy_provenance_casts,
+ lossy_provenance_casts,
+ macro_use_extern_crate,
+ meta_variable_misuse,
+ missing_abi,
+ missing_copy_implementations,
+ missing_debug_implementations,
+ missing_docs,
+ non_ascii_idents,
+ noop_method_call,
+ single_use_lifetimes,
+ trivial_casts,
+ trivial_numeric_casts,
+ unreachable_pub,
+ unused_import_braces,
+ unused_lifetimes,
+ unused_qualifications,
+ unused_results,
+ unused_tuple_struct_fields,
+ variant_size_differences
+)]
+#![warn(clippy::all, clippy::pedantic, clippy::nursery, clippy::restriction)]
+#![allow(clippy::blanket_clippy_restriction_lints)] // this is a test, so enable all restriction lints intentionally.
+#![allow(clippy::exhaustive_structs, clippy::exhaustive_enums, clippy::single_char_lifetime_names)] // TODO
+
+pub mod basic {
+ include!("include/basic.rs");
+
+ pub mod inside_macro {
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[::pin_project::pin_project]
+ #[derive(Debug)]
+ pub struct DefaultStruct<T, U> {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+ }
+
+ #[::pin_project::pin_project(
+ project = DefaultStructNamedProj,
+ project_ref = DefaultStructNamedProjRef,
+ )]
+ #[derive(Debug)]
+ pub struct DefaultStructNamed<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(
+ project = DefaultTupleStructNamedProj,
+ project_ref = DefaultTupleStructNamedProjRef,
+ )]
+ #[derive(Debug)]
+ pub struct DefaultTupleStructNamed<T, U>(#[pin] pub T, pub U);
+
+ #[::pin_project::pin_project(
+ project = DefaultEnumProj,
+ project_ref = DefaultEnumProjRef,
+ )]
+ #[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,
+ project = PinnedDropEnumProj,
+ project_ref = PinnedDropEnumProjRef,
+ )]
+ #[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 = ReplaceStructNamedProj,
+ project_ref = ReplaceStructNamedProjRef,
+ project_replace = ReplaceStructNamedProjOwn,
+ )]
+ #[derive(Debug)]
+ pub struct ReplaceStructNamed<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 = ReplaceTupleStructNamedProj,
+ project_ref = ReplaceTupleStructNamedProjRef,
+ project_replace = ReplaceTupleStructNamedProjOwn,
+ )]
+ #[derive(Debug)]
+ pub struct ReplaceTupleStructNamed<T, U>(#[pin] pub T, pub U);
+
+ #[::pin_project::pin_project(
+ project = ReplaceEnumProj,
+ project_ref = ReplaceEnumProjRef,
+ project_replace = ReplaceEnumProjOwn,
+ )]
+ #[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,
+ project = UnsafeUnpinEnumProj,
+ project_ref = UnsafeUnpinEnumProjRef,
+ )]
+ #[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,
+ project = NotUnpinEnumProj,
+ project_ref = NotUnpinEnumProjRef,
+ )]
+ #[derive(Debug)]
+ pub enum NotUnpinEnum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+ }
+
+ #[allow(clippy::undocumented_unsafe_blocks)]
+ unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
+ ::pin_project::UnsafeUnpin for UnsafeUnpinStruct<T, U>
+ {
+ }
+ #[allow(clippy::undocumented_unsafe_blocks)]
+ unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
+ ::pin_project::UnsafeUnpin for UnsafeUnpinTupleStruct<T, U>
+ {
+ }
+ #[allow(clippy::undocumented_unsafe_blocks)]
+ unsafe impl<T: ::pin_project::__private::Unpin, U: ::pin_project::__private::Unpin>
+ ::pin_project::UnsafeUnpin for UnsafeUnpinEnum<T, U>
+ {
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+pub mod forbid_unsafe {
+ #![forbid(unsafe_code)]
+
+ include!("include/basic-safe-part.rs");
+
+ pub mod inside_macro {
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[::pin_project::pin_project]
+ #[derive(Debug)]
+ pub struct DefaultStruct<T, U> {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+ }
+
+ #[::pin_project::pin_project(
+ project = DefaultStructNamedProj,
+ project_ref = DefaultStructNamedProjRef,
+ )]
+ #[derive(Debug)]
+ pub struct DefaultStructNamed<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(
+ project = DefaultTupleStructNamedProj,
+ project_ref = DefaultTupleStructNamedProjRef,
+ )]
+ #[derive(Debug)]
+ pub struct DefaultTupleStructNamed<T, U>(#[pin] pub T, pub U);
+
+ #[::pin_project::pin_project(
+ project = DefaultEnumProj,
+ project_ref = DefaultEnumProjRef,
+ )]
+ #[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,
+ project = PinnedDropEnumProj,
+ project_ref = PinnedDropEnumProjRef,
+ )]
+ #[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 = ReplaceStructNamedProj,
+ project_ref = ReplaceStructNamedProjRef,
+ project_replace = ReplaceStructNamedProjOwn,
+ )]
+ #[derive(Debug)]
+ pub struct ReplaceStructNamed<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 = ReplaceTupleStructNamedProj,
+ project_ref = ReplaceTupleStructNamedProjRef,
+ project_replace = ReplaceTupleStructNamedProjOwn,
+ )]
+ #[derive(Debug)]
+ pub struct ReplaceTupleStructNamed<T, U>(#[pin] pub T, pub U);
+
+ #[::pin_project::pin_project(
+ project = ReplaceEnumProj,
+ project_ref = ReplaceEnumProjRef,
+ project_replace = ReplaceEnumProjOwn,
+ )]
+ #[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,
+ project = UnsafeUnpinEnumProj,
+ project_ref = UnsafeUnpinEnumProjRef,
+ )]
+ #[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,
+ project = NotUnpinEnumProj,
+ project_ref = NotUnpinEnumProjRef,
+ )]
+ #[derive(Debug)]
+ pub enum NotUnpinEnum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+pub mod box_pointers {
+ use pin_project::pin_project;
+
+ #[allow(box_pointers)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct Struct {
+ #[pin]
+ pub p: Box<isize>,
+ pub u: Box<isize>,
+ }
+
+ #[allow(box_pointers)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct TupleStruct(#[pin] pub Box<isize>, pub Box<isize>);
+
+ #[allow(box_pointers)] // for the type itself
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug)]
+ pub enum Enum {
+ Struct {
+ #[pin]
+ p: Box<isize>,
+ u: Box<isize>,
+ },
+ Tuple(#[pin] Box<isize>, Box<isize>),
+ Unit,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[allow(box_pointers)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct Struct {
+ #[pin]
+ pub p: Box<isize>,
+ pub u: Box<isize>,
+ }
+
+ #[allow(box_pointers)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct TupleStruct(#[pin] pub Box<isize>, pub Box<isize>);
+
+ #[allow(box_pointers)] // for the type itself
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug)]
+ pub enum Enum {
+ Struct {
+ #[pin]
+ p: Box<isize>,
+ u: Box<isize>,
+ },
+ Tuple(#[pin] Box<isize>, Box<isize>),
+ Unit,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+pub mod deprecated {
+ use pin_project::pin_project;
+
+ #[allow(deprecated)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug, Clone, Copy)]
+ #[deprecated]
+ pub struct Struct {
+ #[deprecated]
+ #[pin]
+ pub p: (),
+ #[deprecated]
+ pub u: (),
+ }
+
+ #[allow(deprecated)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug, Clone, Copy)]
+ #[deprecated]
+ pub struct TupleStruct(
+ #[deprecated]
+ #[pin]
+ pub (),
+ #[deprecated] pub (),
+ );
+
+ #[allow(deprecated)] // for the type itself
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug, Clone, Copy)]
+ #[deprecated]
+ pub enum Enum {
+ #[deprecated]
+ Struct {
+ #[deprecated]
+ #[pin]
+ p: (),
+ #[deprecated]
+ u: (),
+ },
+ #[deprecated]
+ Tuple(
+ #[deprecated]
+ #[pin]
+ (),
+ #[deprecated] (),
+ ),
+ #[deprecated]
+ Unit,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[allow(deprecated)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug, Clone, Copy)]
+ #[deprecated]
+ pub struct Struct {
+ #[deprecated]
+ #[pin]
+ pub p: (),
+ #[deprecated]
+ pub u: (),
+ }
+
+ #[allow(deprecated)] // for the type itself
+ #[pin_project(project_replace)]
+ #[derive(Debug, Clone, Copy)]
+ #[deprecated]
+ pub struct TupleStruct(
+ #[deprecated]
+ #[pin]
+ pub (),
+ #[deprecated] pub (),
+ );
+
+ #[allow(deprecated)] // for the type itself
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug, Clone, Copy)]
+ #[deprecated]
+ pub enum Enum {
+ #[deprecated]
+ Struct {
+ #[deprecated]
+ #[pin]
+ p: (),
+ #[deprecated]
+ u: (),
+ },
+ #[deprecated]
+ Tuple(
+ #[deprecated]
+ #[pin]
+ (),
+ #[deprecated] (),
+ ),
+ #[deprecated]
+ Unit,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+pub mod explicit_outlives_requirements {
+ use pin_project::pin_project;
+
+ #[allow(explicit_outlives_requirements)] // for the type itself: https://github.com/rust-lang/rust/issues/60993
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct Struct<'a, T, U>
+ where
+ T: ?Sized,
+ U: ?Sized,
+ {
+ #[pin]
+ pub pinned: &'a mut T,
+ pub unpinned: &'a mut U,
+ }
+
+ #[allow(explicit_outlives_requirements)] // for the type itself: https://github.com/rust-lang/rust/issues/60993
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct TupleStruct<'a, T, U>(#[pin] pub &'a mut T, pub &'a mut U)
+ where
+ T: ?Sized,
+ U: ?Sized;
+
+ #[allow(explicit_outlives_requirements)] // for the type itself: https://github.com/rust-lang/rust/issues/60993
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug)]
+ pub enum Enum<'a, T, U>
+ where
+ T: ?Sized,
+ U: ?Sized,
+ {
+ Struct {
+ #[pin]
+ pinned: &'a mut T,
+ unpinned: &'a mut U,
+ },
+ Tuple(#[pin] &'a mut T, &'a mut U),
+ Unit,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[allow(explicit_outlives_requirements)] // for the type itself: https://github.com/rust-lang/rust/issues/60993
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct Struct<'a, T, U>
+ where
+ T: ?Sized,
+ U: ?Sized,
+ {
+ #[pin]
+ pub pinned: &'a mut T,
+ pub unpinned: &'a mut U,
+ }
+
+ #[allow(explicit_outlives_requirements)] // for the type itself: https://github.com/rust-lang/rust/issues/60993
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct TupleStruct<'a, T, U>(#[pin] pub &'a mut T, pub &'a mut U)
+ where
+ T: ?Sized,
+ U: ?Sized;
+
+ #[allow(explicit_outlives_requirements)] // for the type itself: https://github.com/rust-lang/rust/issues/60993
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug)]
+ pub enum Enum<'a, T, U>
+ where
+ T: ?Sized,
+ U: ?Sized,
+ {
+ Struct {
+ #[pin]
+ pinned: &'a mut T,
+ unpinned: &'a mut U,
+ },
+ Tuple(#[pin] &'a mut T, &'a mut U),
+ Unit,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+#[allow(missing_debug_implementations)]
+pub mod single_use_lifetimes {
+ use pin_project::pin_project;
+
+ #[allow(unused_lifetimes)]
+ pub trait Trait<'a> {}
+
+ #[allow(unused_lifetimes)] // for the type itself
+ #[allow(single_use_lifetimes)] // for the type itself: 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> Trait<'pin>,
+ for<'pin, 'pin_, 'pin__> &'pin &'pin_ &'pin__ T: Unpin,
+ {
+ #[pin]
+ _f: &'pin___ mut T,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[allow(unused_lifetimes)]
+ pub trait Trait<'a> {}
+
+ #[allow(unused_lifetimes)] // for the type itself
+ #[allow(single_use_lifetimes)] // for the type itself: 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> Trait<'pin>,
+ for<'pin, 'pin_, 'pin__> &'pin &'pin_ &'pin__ T: Unpin,
+ {
+ #[pin]
+ _f: &'pin___ mut T,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+pub mod variant_size_differences {
+ use pin_project::pin_project;
+
+ #[allow(missing_debug_implementations, missing_copy_implementations)] // https://github.com/rust-lang/rust/pull/74060
+ #[allow(variant_size_differences)] // for the type itself
+ #[allow(clippy::large_enum_variant)] // for the type itself
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum {
+ V1(u8),
+ V2([u8; 1024]),
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[allow(missing_debug_implementations, missing_copy_implementations)] // https://github.com/rust-lang/rust/pull/74060
+ #[allow(variant_size_differences)] // for the type itself
+ #[allow(clippy::large_enum_variant)] // for the type itself
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum {
+ V1(u8),
+ V2([u8; 1024]),
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+pub mod clippy_mut_mut {
+ use pin_project::pin_project;
+
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct Struct<'a, T, U> {
+ #[pin]
+ pub pinned: &'a mut T,
+ pub unpinned: &'a mut U,
+ }
+
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct TupleStruct<'a, T, U>(#[pin] &'a mut T, &'a mut U);
+
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug)]
+ pub enum Enum<'a, T, U> {
+ Struct {
+ #[pin]
+ pinned: &'a mut T,
+ unpinned: &'a mut U,
+ },
+ Tuple(#[pin] &'a mut T, &'a mut U),
+ Unit,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct Struct<'a, T, U> {
+ #[pin]
+ pub pinned: &'a mut T,
+ pub unpinned: &'a mut U,
+ }
+
+ #[pin_project(project_replace)]
+ #[derive(Debug)]
+ pub struct TupleStruct<'a, T, U>(#[pin] &'a mut T, &'a mut U);
+
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ #[derive(Debug)]
+ pub enum Enum<'a, T, U> {
+ Struct {
+ #[pin]
+ pinned: &'a mut T,
+ unpinned: &'a mut U,
+ },
+ Tuple(#[pin] &'a mut T, &'a mut U),
+ Unit,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+#[allow(missing_debug_implementations)]
+#[allow(unreachable_pub)]
+mod clippy_redundant_pub_crate {
+ use pin_project::pin_project;
+
+ #[pin_project(project_replace)]
+ pub struct Struct<T, U> {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct TupleStruct<T, U>(#[pin] pub T, pub U);
+
+ #[allow(dead_code)]
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[allow(clippy::redundant_pub_crate)]
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[pin_project(project_replace)]
+ pub struct Struct<T, U> {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct TupleStruct<T, U>(#[pin] pub T, pub U);
+
+ #[allow(dead_code)]
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum<T, U> {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+#[allow(missing_debug_implementations)]
+pub mod clippy_type_repetition_in_bounds {
+ use pin_project::pin_project;
+
+ #[pin_project(project_replace)]
+ pub struct Struct<T, U>
+ where
+ Self: Sized,
+ {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct TupleStruct<T, U>(#[pin] T, U)
+ where
+ Self: Sized;
+
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum<T, U>
+ where
+ Self: Sized,
+ {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[pin_project(project_replace)]
+ pub struct Struct<T, U>
+ where
+ Self: Sized,
+ {
+ #[pin]
+ pub pinned: T,
+ pub unpinned: U,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct TupleStruct<T, U>(#[pin] T, U)
+ where
+ Self: Sized;
+
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum<T, U>
+ where
+ Self: Sized,
+ {
+ Struct {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ Tuple(#[pin] T, U),
+ Unit,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+#[allow(missing_debug_implementations)]
+pub mod clippy_use_self {
+ use pin_project::pin_project;
+
+ pub trait Trait {
+ type Assoc;
+ }
+
+ #[pin_project(project_replace)]
+ pub struct Generics<T: Trait<Assoc = Self>>
+ where
+ Self: Trait<Assoc = Self>,
+ {
+ _f: T,
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ use super::Trait;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[pin_project(project_replace)]
+ pub struct Generics<T: Trait<Assoc = Self>>
+ where
+ Self: Trait<Assoc = Self>,
+ {
+ _f: T,
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+#[allow(missing_debug_implementations)]
+pub mod clippy_used_underscore_binding {
+ use pin_project::pin_project;
+
+ #[pin_project(project_replace)]
+ pub struct Struct<T, U> {
+ #[pin]
+ pub _pinned: T,
+ pub _unpinned: U,
+ }
+
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum<T, U> {
+ Struct {
+ #[pin]
+ _pinned: T,
+ _unpinned: U,
+ },
+ }
+
+ pub mod inside_macro {
+ use pin_project::pin_project;
+
+ #[rustfmt::skip]
+ macro_rules! mac {
+ () => {
+ #[pin_project(project_replace)]
+ pub struct Struct<T, U> {
+ #[pin]
+ pub _pinned: T,
+ pub _unpinned: U,
+ }
+
+ #[pin_project(
+ project = EnumProj,
+ project_ref = EnumProjRef,
+ project_replace = EnumProjOwn,
+ )]
+ pub enum Enum<T, U> {
+ Struct {
+ #[pin]
+ _pinned: T,
+ _unpinned: U,
+ },
+ }
+ };
+ }
+
+ mac!();
+ }
+}
+
+#[allow(missing_debug_implementations)]
+pub mod clippy_ref_option_ref {
+ use pin_project::pin_project;
+
+ #[pin_project]
+ pub struct Struct<'a> {
+ #[pin]
+ pub _pinned: Option<&'a ()>,
+ pub _unpinned: Option<&'a ()>,
+ }
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef)]
+ pub enum Enum<'a> {
+ Struct {
+ #[pin]
+ _pinned: Option<&'a ()>,
+ _unpinned: Option<&'a ()>,
+ },
+ }
+}
--- /dev/null
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+#![allow(dead_code)]
+
+#[macro_use]
+mod auxiliary;
+
+use std::{
+ marker::{PhantomData, PhantomPinned},
+ panic,
+ pin::Pin,
+};
+
+use pin_project::{pin_project, pinned_drop, UnsafeUnpin};
+
+#[test]
+fn projection() {
+ #[pin_project(
+ project = StructProj,
+ project_ref = StructProjRef,
+ project_replace = StructProjOwn,
+ )]
+ struct Struct<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+ }
+
+ let mut s = Struct { f1: 1, f2: 2 };
+ let mut s_orig = Pin::new(&mut s);
+ let s = s_orig.as_mut().project();
+
+ let _: Pin<&mut i32> = s.f1;
+ assert_eq!(*s.f1, 1);
+ let _: &mut i32 = s.f2;
+ assert_eq!(*s.f2, 2);
+
+ assert_eq!(s_orig.as_ref().f1, 1);
+ assert_eq!(s_orig.as_ref().f2, 2);
+
+ let mut s = Struct { f1: 1, f2: 2 };
+ let mut s = Pin::new(&mut s);
+ {
+ let StructProj { f1, f2 } = s.as_mut().project();
+ let _: Pin<&mut i32> = f1;
+ let _: &mut i32 = f2;
+ }
+ {
+ let StructProjRef { f1, f2 } = s.as_ref().project_ref();
+ let _: Pin<&i32> = f1;
+ let _: &i32 = f2;
+ }
+ {
+ let StructProjOwn { f1, f2 } = s.as_mut().project_replace(Struct { f1: 3, f2: 4 });
+ let _: PhantomData<i32> = f1;
+ let _: i32 = f2;
+ assert_eq!(f2, 2);
+ assert_eq!(s.f1, 3);
+ assert_eq!(s.f2, 4);
+ }
+
+ #[pin_project(project_replace)]
+ struct TupleStruct<T, U>(#[pin] T, U);
+
+ let mut s = TupleStruct(1, 2);
+ let s = Pin::new(&mut s).project();
+
+ let _: Pin<&mut i32> = s.0;
+ assert_eq!(*s.0, 1);
+ let _: &mut i32 = s.1;
+ assert_eq!(*s.1, 2);
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ #[derive(Eq, PartialEq, Debug)]
+ enum Enum<A, B, C, D> {
+ Tuple(#[pin] A, B),
+ Struct {
+ #[pin]
+ f1: C,
+ f2: D,
+ },
+ Unit,
+ }
+
+ let mut e = Enum::Tuple(1, 2);
+ let mut e = Pin::new(&mut e);
+
+ match e.as_mut().project() {
+ EnumProj::Tuple(x, y) => {
+ let x: Pin<&mut i32> = x;
+ assert_eq!(*x, 1);
+ let y: &mut i32 = y;
+ assert_eq!(*y, 2);
+ }
+ EnumProj::Struct { f1, f2 } => {
+ let _: Pin<&mut i32> = f1;
+ let _: &mut i32 = f2;
+ unreachable!();
+ }
+ EnumProj::Unit => unreachable!(),
+ }
+
+ assert_eq!(&*e, &Enum::Tuple(1, 2));
+
+ let mut e = Enum::Struct { f1: 3, f2: 4 };
+ let mut e = Pin::new(&mut e);
+
+ match e.as_mut().project() {
+ EnumProj::Tuple(x, y) => {
+ let _: Pin<&mut i32> = x;
+ let _: &mut i32 = y;
+ unreachable!();
+ }
+ EnumProj::Struct { f1, f2 } => {
+ let _: Pin<&mut i32> = f1;
+ assert_eq!(*f1, 3);
+ let _: &mut i32 = f2;
+ assert_eq!(*f2, 4);
+ }
+ EnumProj::Unit => unreachable!(),
+ }
+
+ if let EnumProj::Struct { f1, f2 } = e.as_mut().project() {
+ let _: Pin<&mut i32> = f1;
+ assert_eq!(*f1, 3);
+ let _: &mut i32 = f2;
+ assert_eq!(*f2, 4);
+ }
+}
+
+#[test]
+fn enum_project_set() {
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ #[derive(Eq, PartialEq, Debug)]
+ enum Enum {
+ V1(#[pin] u8),
+ V2(bool),
+ }
+
+ let mut e = Enum::V1(25);
+ let mut e_orig = Pin::new(&mut e);
+ let e_proj = e_orig.as_mut().project();
+
+ match e_proj {
+ EnumProj::V1(val) => {
+ let new_e = Enum::V2(val.as_ref().get_ref() == &25);
+ e_orig.set(new_e);
+ }
+ EnumProj::V2(_) => unreachable!(),
+ }
+
+ assert_eq!(e, Enum::V2(true));
+}
+
+#[test]
+fn where_clause() {
+ #[pin_project]
+ struct Struct<T>
+ where
+ T: Copy,
+ {
+ f: T,
+ }
+
+ #[pin_project]
+ struct TupleStruct<T>(T)
+ where
+ T: Copy;
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ enum Enum<T>
+ where
+ T: Copy,
+ {
+ V(T),
+ }
+}
+
+#[test]
+fn where_clause_and_associated_type_field() {
+ #[pin_project(project_replace)]
+ struct Struct1<I>
+ where
+ I: Iterator,
+ {
+ #[pin]
+ f1: I,
+ f2: I::Item,
+ }
+
+ #[pin_project(project_replace)]
+ struct Struct2<I, J>
+ where
+ I: Iterator<Item = J>,
+ {
+ #[pin]
+ f1: I,
+ f2: J,
+ }
+
+ #[pin_project(project_replace)]
+ struct Struct3<T>
+ where
+ T: 'static,
+ {
+ f: T,
+ }
+
+ trait Static: 'static {}
+
+ impl<T> Static for Struct3<T> {}
+
+ #[pin_project(project_replace)]
+ struct TupleStruct<I>(#[pin] I, I::Item)
+ where
+ I: Iterator;
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ enum Enum<I>
+ where
+ I: Iterator,
+ {
+ V1(#[pin] I),
+ V2(I::Item),
+ }
+}
+
+#[test]
+fn derive_copy() {
+ #[pin_project(project_replace)]
+ #[derive(Clone, Copy)]
+ struct Struct<T> {
+ f: T,
+ }
+
+ fn is_copy<T: Copy>() {}
+
+ is_copy::<Struct<u8>>();
+}
+
+#[test]
+fn move_out() {
+ struct NotCopy;
+
+ #[pin_project(project_replace)]
+ struct Struct {
+ f: NotCopy,
+ }
+
+ let x = Struct { f: NotCopy };
+ let _val: NotCopy = x.f;
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ enum Enum {
+ V(NotCopy),
+ }
+
+ let x = Enum::V(NotCopy);
+ #[allow(clippy::infallible_destructuring_match)]
+ let _val: NotCopy = match x {
+ Enum::V(val) => val,
+ };
+}
+
+#[test]
+fn trait_bounds_on_type_generics() {
+ #[pin_project(project_replace)]
+ pub struct Struct1<'a, T: ?Sized> {
+ f: &'a mut T,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct Struct2<'a, T: ::core::fmt::Debug> {
+ f: &'a mut T,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct Struct3<'a, T: core::fmt::Debug> {
+ f: &'a mut T,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct Struct4<'a, T: core::fmt::Debug + core::fmt::Display> {
+ f: &'a mut T,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct Struct5<'a, T: core::fmt::Debug + ?Sized> {
+ f: &'a mut T,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct Struct6<'a, T: core::fmt::Debug = [u8; 16]> {
+ f: &'a mut T,
+ }
+
+ let _: Struct6<'_> = Struct6 { f: &mut [0_u8; 16] };
+
+ #[pin_project(project_replace)]
+ pub struct Struct7<T: 'static> {
+ f: T,
+ }
+
+ trait Static: 'static {}
+
+ impl<T> Static for Struct7<T> {}
+
+ #[pin_project(project_replace)]
+ pub struct Struct8<'a, 'b: 'a> {
+ f1: &'a u8,
+ f2: &'b u8,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct TupleStruct<'a, T: ?Sized>(&'a mut T);
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ enum Enum<'a, T: ?Sized> {
+ V(&'a mut T),
+ }
+}
+
+#[test]
+fn overlapping_lifetime_names() {
+ #[pin_project(project_replace)]
+ pub struct Struct1<'pin, T> {
+ #[pin]
+ f: &'pin mut T,
+ }
+
+ #[pin_project(project_replace)]
+ pub struct Struct2<'pin, 'pin_, 'pin__> {
+ #[pin]
+ f: &'pin &'pin_ &'pin__ (),
+ }
+
+ pub trait Trait<'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> Trait<'pin>,
+ for<'pin, 'pin_, 'pin__> &'pin &'pin_ &'pin__ T: Unpin,
+ {
+ #[pin]
+ f: &'pin___ mut T,
+ }
+
+ #[pin_project(PinnedDrop)]
+ pub struct PinnedDropStruct<'pin> {
+ #[pin]
+ f: &'pin (),
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for PinnedDropStruct<'_> {
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pin_project(UnsafeUnpin)]
+ pub struct UnsafeUnpinStruct<'pin> {
+ #[pin]
+ f: &'pin (),
+ }
+
+ unsafe impl UnsafeUnpin for UnsafeUnpinStruct<'_> {}
+
+ #[pin_project(!Unpin)]
+ pub struct NotUnpinStruct<'pin> {
+ #[pin]
+ f: &'pin (),
+ }
+}
+
+#[test]
+fn combine() {
+ #[pin_project(PinnedDrop, UnsafeUnpin)]
+ pub struct PinnedDropWithUnsafeUnpin<T> {
+ #[pin]
+ f: T,
+ }
+
+ #[pinned_drop]
+ impl<T> PinnedDrop for PinnedDropWithUnsafeUnpin<T> {
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ unsafe impl<T: Unpin> UnsafeUnpin for PinnedDropWithUnsafeUnpin<T> {}
+
+ #[pin_project(PinnedDrop, !Unpin)]
+ pub struct PinnedDropWithNotUnpin<T> {
+ #[pin]
+ f: 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]
+ f: T,
+ }
+
+ unsafe impl<T: Unpin> UnsafeUnpin for UnsafeUnpinWithReplace<T> {}
+
+ #[pin_project(!Unpin, project_replace)]
+ pub struct NotUnpinWithReplace<T> {
+ #[pin]
+ f: T,
+ }
+}
+
+#[test]
+fn private_type_in_public_type() {
+ #[pin_project(project_replace)]
+ pub struct PublicStruct<T> {
+ #[pin]
+ inner: PrivateStruct<T>,
+ }
+
+ struct PrivateStruct<T>(T);
+}
+
+#[allow(clippy::needless_lifetimes)]
+#[test]
+fn lifetime_project() {
+ #[pin_project(project_replace)]
+ struct Struct1<T, U> {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ }
+
+ #[pin_project(project_replace)]
+ struct Struct2<'a, T, U> {
+ #[pin]
+ pinned: &'a T,
+ unpinned: U,
+ }
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ enum Enum<T, U> {
+ V {
+ #[pin]
+ pinned: T,
+ unpinned: U,
+ },
+ }
+
+ impl<T, U> Struct1<T, U> {
+ fn get_pin_ref<'a>(self: Pin<&'a Self>) -> Pin<&'a T> {
+ self.project_ref().pinned
+ }
+ fn get_pin_mut<'a>(self: Pin<&'a mut Self>) -> Pin<&'a mut T> {
+ self.project().pinned
+ }
+ fn get_pin_ref_elided(self: Pin<&Self>) -> Pin<&T> {
+ self.project_ref().pinned
+ }
+ fn get_pin_mut_elided(self: Pin<&mut Self>) -> Pin<&mut T> {
+ self.project().pinned
+ }
+ }
+
+ impl<'b, T, U> Struct2<'b, T, U> {
+ fn get_pin_ref<'a>(self: Pin<&'a Self>) -> Pin<&'a &'b T> {
+ self.project_ref().pinned
+ }
+ fn get_pin_mut<'a>(self: Pin<&'a mut Self>) -> Pin<&'a mut &'b T> {
+ self.project().pinned
+ }
+ fn get_pin_ref_elided(self: Pin<&Self>) -> Pin<&&'b T> {
+ self.project_ref().pinned
+ }
+ fn get_pin_mut_elided(self: Pin<&mut Self>) -> Pin<&mut &'b T> {
+ self.project().pinned
+ }
+ }
+
+ impl<T, U> Enum<T, U> {
+ fn get_pin_ref<'a>(self: Pin<&'a Self>) -> Pin<&'a T> {
+ match self.project_ref() {
+ EnumProjRef::V { pinned, .. } => pinned,
+ }
+ }
+ fn get_pin_mut<'a>(self: Pin<&'a mut Self>) -> Pin<&'a mut T> {
+ match self.project() {
+ EnumProj::V { pinned, .. } => pinned,
+ }
+ }
+ fn get_pin_ref_elided(self: Pin<&Self>) -> Pin<&T> {
+ match self.project_ref() {
+ EnumProjRef::V { pinned, .. } => pinned,
+ }
+ }
+ fn get_pin_mut_elided(self: Pin<&mut Self>) -> Pin<&mut T> {
+ match self.project() {
+ EnumProj::V { pinned, .. } => pinned,
+ }
+ }
+ }
+}
+
+mod visibility {
+ use pin_project::pin_project;
+
+ #[pin_project(project_replace)]
+ pub(crate) struct S {
+ pub f: u8,
+ }
+}
+
+#[test]
+fn visibility() {
+ let mut x = visibility::S { f: 0 };
+ let x = Pin::new(&mut x);
+ let y = x.as_ref().project_ref();
+ let _: &u8 = y.f;
+ let y = x.project();
+ let _: &mut u8 = y.f;
+}
+
+#[test]
+fn trivial_bounds() {
+ #[pin_project(project_replace)]
+ pub struct NoGenerics {
+ #[pin]
+ f: PhantomPinned,
+ }
+
+ assert_not_unpin!(NoGenerics);
+}
+
+#[test]
+fn dst() {
+ #[pin_project]
+ struct Struct1<T: ?Sized> {
+ f: T,
+ }
+
+ let mut x = Struct1 { f: 0_u8 };
+ let x: Pin<&mut Struct1<dyn core::fmt::Debug>> = Pin::new(&mut x as _);
+ let _: &mut (dyn core::fmt::Debug) = x.project().f;
+
+ #[pin_project]
+ struct Struct2<T: ?Sized> {
+ #[pin]
+ f: T,
+ }
+
+ let mut x = Struct2 { f: 0_u8 };
+ let x: Pin<&mut Struct2<dyn core::fmt::Debug + Unpin>> = Pin::new(&mut x as _);
+ let _: Pin<&mut (dyn core::fmt::Debug + Unpin)> = x.project().f;
+
+ #[allow(explicit_outlives_requirements)] // https://github.com/rust-lang/rust/issues/60993
+ #[pin_project]
+ struct Struct3<T>
+ where
+ T: ?Sized,
+ {
+ f: T,
+ }
+
+ #[allow(explicit_outlives_requirements)] // https://github.com/rust-lang/rust/issues/60993
+ #[pin_project]
+ struct Struct4<T>
+ where
+ T: ?Sized,
+ {
+ #[pin]
+ f: T,
+ }
+
+ #[pin_project(UnsafeUnpin)]
+ struct Struct5<T: ?Sized> {
+ f: T,
+ }
+
+ #[pin_project(UnsafeUnpin)]
+ struct Struct6<T: ?Sized> {
+ #[pin]
+ f: T,
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct Struct7<T: ?Sized> {
+ f: T,
+ }
+
+ #[pinned_drop]
+ impl<T: ?Sized> PinnedDrop for Struct7<T> {
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct Struct8<T: ?Sized> {
+ #[pin]
+ f: T,
+ }
+
+ #[pinned_drop]
+ impl<T: ?Sized> PinnedDrop for Struct8<T> {
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pin_project(!Unpin)]
+ struct Struct9<T: ?Sized> {
+ f: T,
+ }
+
+ #[pin_project(!Unpin)]
+ struct Struct10<T: ?Sized> {
+ #[pin]
+ f: T,
+ }
+
+ #[pin_project]
+ struct Struct11<'a, T: ?Sized, U: ?Sized> {
+ f1: &'a mut T,
+ f2: U,
+ }
+
+ #[pin_project]
+ struct TupleStruct1<T: ?Sized>(T);
+
+ #[pin_project]
+ struct TupleStruct2<T: ?Sized>(#[pin] T);
+
+ #[allow(explicit_outlives_requirements)] // https://github.com/rust-lang/rust/issues/60993
+ #[pin_project]
+ struct TupleStruct3<T>(T)
+ where
+ T: ?Sized;
+
+ #[allow(explicit_outlives_requirements)] // https://github.com/rust-lang/rust/issues/60993
+ #[pin_project]
+ struct TupleStruct4<T>(#[pin] T)
+ where
+ T: ?Sized;
+
+ #[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);
+
+ #[pin_project]
+ struct TupleStruct11<'a, T: ?Sized, U: ?Sized>(&'a mut T, U);
+}
+
+#[test]
+fn dyn_type() {
+ #[pin_project]
+ struct Struct1 {
+ f: dyn core::fmt::Debug,
+ }
+
+ #[pin_project]
+ struct Struct2 {
+ #[pin]
+ f: dyn core::fmt::Debug,
+ }
+
+ #[pin_project]
+ struct Struct3 {
+ f: dyn core::fmt::Debug + Send,
+ }
+
+ #[pin_project]
+ struct Struct4 {
+ #[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;
+ }
+
+ #[allow(clippy::type_repetition_in_bounds)]
+ #[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 = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn)]
+ 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 no_infer_outlives() {
+ trait Trait<X> {
+ type Y;
+ }
+
+ struct Struct1<A>(A);
+
+ impl<X, T> Trait<X> for Struct1<T> {
+ type Y = Option<T>;
+ }
+
+ #[pin_project(project_replace)]
+ struct Struct2<A, B> {
+ _f: <Struct1<A> as Trait<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() {
+ #[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);
+}
--- /dev/null
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[test]
+fn safe_project() {
+ #[pin_project(PinnedDrop)]
+ pub struct Struct<'a> {
+ was_dropped: &'a mut bool,
+ #[pin]
+ field: u8,
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for Struct<'_> {
+ fn drop(self: Pin<&mut Self>) {
+ **self.project().was_dropped = true;
+ }
+ }
+
+ let mut was_dropped = false;
+ drop(Struct { was_dropped: &mut was_dropped, field: 42 });
+ assert!(was_dropped);
+}
+
+#[test]
+fn self_call() {
+ #[pin_project(PinnedDrop)]
+ pub struct S<T>(T);
+
+ trait Trait {
+ fn self_ref(&self) {}
+ fn self_pin_ref(self: Pin<&Self>) {}
+ fn self_mut(&mut self) {}
+ fn self_pin_mut(self: Pin<&mut Self>) {}
+ fn assoc_fn(_this: Pin<&mut Self>) {}
+ }
+
+ impl<T> Trait for S<T> {}
+
+ #[pinned_drop]
+ impl<T> PinnedDrop for S<T> {
+ fn drop(mut self: Pin<&mut Self>) {
+ self.self_ref();
+ self.as_ref().self_pin_ref();
+ self.self_mut();
+ self.as_mut().self_pin_mut();
+ Self::assoc_fn(self.as_mut());
+ <Self>::assoc_fn(self.as_mut());
+ }
+ }
+}
+
+#[test]
+fn self_ty() {
+ #[pin_project(PinnedDrop)]
+ pub struct Struct {
+ pub f: (),
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for Struct {
+ #[allow(irrefutable_let_patterns)]
+ #[allow(clippy::match_single_binding)]
+ fn drop(mut self: Pin<&mut Self>) {
+ // expr
+ let _: Self = Self { f: () };
+
+ // pat
+ match *self {
+ Self { f: () } => {}
+ }
+ if let Self { f: () } = *self {}
+ let Self { f: () } = *self;
+ }
+ }
+
+ #[pin_project(PinnedDrop)]
+ 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(_) => {}
+ }
+ if let Self(_) = *self {}
+ let Self(_) = *self;
+ }
+ }
+
+ #[pin_project(PinnedDrop, project = EnumProj, project_ref = EnumProjRef)]
+ pub enum Enum {
+ Struct { f: () },
+ Tuple(()),
+ Unit,
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for Enum {
+ fn drop(mut self: Pin<&mut Self>) {
+ // expr
+ let _: Self = Self::Struct { f: () };
+ let _: Self = Self::Tuple(());
+ let _: Self = Self::Unit;
+
+ // pat
+ match *self {
+ Self::Struct { f: () } => {}
+ Self::Tuple(_) => {}
+ Self::Unit => {}
+ }
+ if let Self::Struct { f: () } = *self {}
+ if let Self::Tuple(_) = *self {}
+ if let Self::Unit = *self {}
+ }
+ }
+}
+
+#[test]
+fn self_inside_macro_containing_fn() {
+ macro_rules! mac {
+ ($($tt:tt)*) => {
+ $($tt)*
+ };
+ }
+
+ #[pin_project(PinnedDrop)]
+ pub struct S(());
+
+ #[pinned_drop]
+ impl PinnedDrop for S {
+ fn drop(self: Pin<&mut Self>) {
+ mac!({
+ impl S {
+ pub fn _f(self) -> Self {
+ self
+ }
+ }
+ });
+ }
+ }
+}
+
+// See also `ui/pinned_drop/self.rs`.
+#[rustversion::since(1.40)] // https://github.com/rust-lang/rust/pull/64690
+#[test]
+fn self_inside_macro_def() {
+ #[pin_project(PinnedDrop)]
+ pub struct S(());
+
+ #[pinned_drop]
+ impl PinnedDrop for S {
+ fn drop(self: Pin<&mut Self>) {
+ macro_rules! mac {
+ () => {{
+ let _ = self;
+ let _ = Self(());
+ }};
+ }
+ mac!();
+ }
+ }
+}
+
+#[test]
+fn self_arg_inside_macro_call() {
+ #[pin_project(PinnedDrop)]
+ struct Struct {
+ f: (),
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for Struct {
+ fn drop(self: Pin<&mut Self>) {
+ let _: Vec<_> = vec![self.f];
+ }
+ }
+}
+
+#[test]
+fn self_ty_inside_macro_call() {
+ macro_rules! mac {
+ ($($tt:tt)*) => {
+ $($tt)*
+ };
+ }
+
+ #[pin_project(PinnedDrop)]
+ pub struct Struct<T: Send>
+ where
+ mac!(Self): Send,
+ {
+ _f: T,
+ }
+
+ impl<T: Send> Struct<T> {
+ const ASSOC1: usize = 1;
+ fn assoc1() {}
+ }
+
+ trait Trait {
+ type Assoc2;
+ const ASSOC2: usize;
+ fn assoc2();
+ }
+
+ impl<T: Send> Trait for Struct<T> {
+ type Assoc2 = u8;
+ const ASSOC2: usize = 2;
+ fn assoc2() {}
+ }
+
+ #[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::ASSOC1;);
+ mac!(<Self>::ASSOC1;);
+ mac!(Self::assoc1(););
+ mac!(<Self>::assoc1(););
+
+ // trait items
+ mac!(let _: <Self as Trait>::Assoc2;);
+ mac!(Self::ASSOC2;);
+ mac!(<Self>::ASSOC2;);
+ mac!(<Self as Trait>::ASSOC2;);
+ mac!(Self::assoc2(););
+ mac!(<Self>::assoc2(););
+ mac!(<Self as Trait>::assoc2(););
+ }
+ }
+}
+
+#[test]
+fn inside_macro() {
+ #[pin_project(PinnedDrop)]
+ struct S(());
+
+ macro_rules! mac {
+ ($expr:expr) => {
+ #[pinned_drop]
+ impl PinnedDrop for S {
+ fn drop(self: Pin<&mut Self>) {
+ let _ = $expr;
+ }
+ }
+ };
+ }
+
+ mac!(1);
+}
+
+pub mod self_path {
+ use super::*;
+
+ #[pin_project(PinnedDrop)]
+ pub struct S<T: Unpin>(T);
+
+ fn f() {}
+
+ #[pinned_drop]
+ impl<T: Unpin> PinnedDrop for self::S<T> {
+ fn drop(mut self: Pin<&mut Self>) {
+ self::f();
+ let _: self::S<()> = self::S(());
+ let _: self::S<Pin<&mut Self>> = self::S(self.as_mut());
+ let self::S(()) = self::S(());
+ let self::S(&mut Self(_)) = self::S(&mut *self);
+ }
+ }
+}
--- /dev/null
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+#![allow(dead_code)]
+
+#[macro_use]
+mod auxiliary;
+
+pub mod default {
+ use std::marker::PhantomPinned;
+
+ use pin_project::pin_project;
+
+ struct Inner<T> {
+ f: T,
+ }
+
+ assert_unpin!(Inner<()>);
+ assert_not_unpin!(Inner<PhantomPinned>);
+
+ #[pin_project]
+ struct Struct<T, U> {
+ #[pin]
+ f1: Inner<T>,
+ f2: U,
+ }
+
+ assert_unpin!(Struct<(), ()>);
+ assert_unpin!(Struct<(), PhantomPinned>);
+ assert_not_unpin!(Struct<PhantomPinned, ()>);
+ assert_not_unpin!(Struct<PhantomPinned, PhantomPinned>);
+
+ #[pin_project(project = EnumProj, project_ref = EnumProjRef)]
+ enum Enum<T, U> {
+ V1 {
+ #[pin]
+ f1: Inner<T>,
+ f2: U,
+ },
+ }
+
+ assert_unpin!(Enum<(), ()>);
+ assert_unpin!(Enum<(), PhantomPinned>);
+ assert_not_unpin!(Enum<PhantomPinned, ()>);
+ assert_not_unpin!(Enum<PhantomPinned, PhantomPinned>);
+
+ #[pin_project]
+ struct TrivialBounds {
+ #[pin]
+ f: PhantomPinned,
+ }
+
+ assert_not_unpin!(TrivialBounds);
+
+ #[pin_project]
+ struct PinRef<'a, T, U> {
+ #[pin]
+ f1: &'a mut Inner<T>,
+ f2: U,
+ }
+
+ assert_unpin!(PinRef<'_, PhantomPinned, PhantomPinned>);
+}
+
+pub mod cfg {
+ use std::marker::PhantomPinned;
+
+ use pin_project::pin_project;
+
+ #[pin_project]
+ struct Foo<T> {
+ #[cfg(any())]
+ #[pin]
+ f: T,
+ #[cfg(not(any()))]
+ f: T,
+ }
+
+ assert_unpin!(Foo<PhantomPinned>);
+
+ #[pin_project]
+ struct Bar<T> {
+ #[cfg(any())]
+ f: T,
+ #[cfg(not(any()))]
+ #[pin]
+ f: T,
+ }
+
+ assert_unpin!(Bar<()>);
+ assert_not_unpin!(Bar<PhantomPinned>);
+}
+
+pub mod cfg_attr {
+ use std::marker::PhantomPinned;
+
+ use pin_project::pin_project;
+
+ #[cfg_attr(any(), pin_project)]
+ struct Foo<T> {
+ f: T,
+ }
+
+ assert_unpin!(Foo<()>);
+ assert_not_unpin!(Foo<PhantomPinned>);
+
+ #[cfg_attr(not(any()), pin_project)]
+ struct Bar<T> {
+ #[cfg_attr(not(any()), pin)]
+ f: T,
+ }
+
+ assert_unpin!(Bar<()>);
+ assert_not_unpin!(Bar<PhantomPinned>);
+}
+
+// pin_project(!Unpin)
+pub mod not_unpin {
+ use std::marker::PhantomPinned;
+
+ use pin_project::pin_project;
+
+ struct Inner<T> {
+ f: T,
+ }
+
+ #[pin_project(!Unpin)]
+ struct Struct<T, U> {
+ #[pin]
+ inner: Inner<T>,
+ other: U,
+ }
+
+ assert_not_unpin!(Struct<(), ()>);
+ assert_not_unpin!(Struct<(), PhantomPinned>);
+ assert_not_unpin!(Struct<PhantomPinned, ()>);
+ assert_not_unpin!(Struct<PhantomPinned, PhantomPinned>);
+
+ #[pin_project(!Unpin)]
+ struct TrivialBounds {
+ #[pin]
+ f: PhantomPinned,
+ }
+
+ assert_not_unpin!(TrivialBounds);
+
+ #[pin_project(!Unpin)]
+ struct PinRef<'a, T, U> {
+ #[pin]
+ inner: &'a mut Inner<T>,
+ other: U,
+ }
+
+ assert_not_unpin!(PinRef<'_, (), ()>);
+}
--- /dev/null
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+// 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;
+
+// Ensure that the compiler doesn't copy the fields
+// of #[repr(packed)] types during drop, if the field has alignment 1
+// (that is, any reference to the field is guaranteed to have proper alignment)
+// We are currently unable to statically prevent the usage of #[pin_project]
+// on #[repr(packed)] types composed entirely of fields of alignment 1.
+// This shouldn't lead to undefined behavior, as long as the compiler doesn't
+// try to move the field anyway during drop.
+//
+// This tests validates that the compiler is doing what we expect.
+#[test]
+fn weird_repr_packed() {
+ // We keep track of the field address during
+ // drop using a thread local, to avoid changing
+ // the layout of our #[repr(packed)] type.
+ thread_local! {
+ static FIELD_ADDR: Cell<usize> = Cell::new(0);
+ }
+
+ #[repr(packed)]
+ struct Struct {
+ field: u8,
+ }
+
+ impl Drop for Struct {
+ fn drop(&mut self) {
+ FIELD_ADDR.with(|f| {
+ f.set(&self.field as *const u8 as usize);
+ });
+ }
+ }
+
+ #[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 x = Struct { field: 27 };
+ let field_addr = &x.field as *const u8 as usize;
+ field_addr
+ };
+ assert_eq!(field_addr, FIELD_ADDR.with(Cell::get));
+}
--- /dev/null
+use std::pin::Pin;
+
+#[cfg_attr(any(), pin_project::pin_project)]
+struct Foo<T> {
+ f: T,
+}
+
+fn main() {
+ let mut x = Foo { f: 0_u8 };
+ let _ = Pin::new(&mut x).project(); //~ ERROR E0599
+}
--- /dev/null
+error[E0599]: no method named `project` found for struct `Pin<&mut Foo<u8>>` in the current scope
+ --> tests/ui/cfg/cfg_attr-resolve.rs:10:30
+ |
+10 | let _ = Pin::new(&mut x).project(); //~ ERROR E0599
+ | ^^^^^^^ method not found in `Pin<&mut Foo<u8>>`
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::pin_project;
+
+#[cfg_attr(not(any()), pin_project)]
+struct Foo<T> {
+ #[cfg_attr(any(), pin)]
+ f: T,
+}
+
+#[cfg_attr(not(any()), pin_project)]
+struct Bar<T> {
+ #[cfg_attr(not(any()), pin)]
+ f: T,
+}
+
+fn main() {
+ let mut x = Foo { f: 0_u8 };
+ let x = Pin::new(&mut x).project();
+ let _: Pin<&mut u8> = x.f; //~ ERROR E0308
+
+ let mut x = Bar { f: 0_u8 };
+ let x = Pin::new(&mut x).project();
+ let _: &mut u8 = x.f; //~ ERROR E0308
+}
--- /dev/null
+error[E0308]: mismatched types
+ --> tests/ui/cfg/cfg_attr-type-mismatch.rs:20:27
+ |
+20 | let _: Pin<&mut u8> = x.f; //~ ERROR E0308
+ | ------------ ^^^ expected struct `Pin`, found `&mut u8`
+ | |
+ | expected due to this
+ |
+ = note: expected struct `Pin<&mut u8>`
+ found mutable reference `&mut u8`
+
+error[E0308]: mismatched types
+ --> tests/ui/cfg/cfg_attr-type-mismatch.rs:24:22
+ |
+24 | let _: &mut u8 = x.f; //~ ERROR E0308
+ | ------- ^^^
+ | | |
+ | | expected `&mut u8`, found struct `Pin`
+ | | help: consider mutably borrowing here: `&mut x.f`
+ | expected due to this
+ |
+ = note: expected mutable reference `&mut u8`
+ found struct `Pin<&mut u8>`
--- /dev/null
+use auxiliary_macro::hidden_repr;
+use pin_project::pin_project;
+
+#[pin_project]
+#[hidden_repr(packed)] //~ ERROR may not be used on #[repr(packed)] types
+struct S {
+ #[cfg(not(any()))]
+ #[pin]
+ f: u32,
+ #[cfg(any())]
+ #[pin]
+ f: u8,
+}
+
+fn main() {}
--- /dev/null
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/cfg/packed_sneaky-span-issue-1.rs:5:15
+ |
+5 | #[hidden_repr(packed)] //~ ERROR may not be used on #[repr(packed)] types
+ | ^^^^^^
--- /dev/null
+use auxiliary_macro::hidden_repr;
+use pin_project::pin_project;
+
+#[pin_project]
+#[hidden_repr(packed)] //~ ERROR may not be used on #[repr(packed)] types
+struct S {
+ #[cfg(any())]
+ #[pin]
+ f: u32,
+ #[cfg(not(any()))]
+ #[pin]
+ f: u8,
+}
+
+fn main() {}
--- /dev/null
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/cfg/packed_sneaky-span-issue-2.rs:5:15
+ |
+5 | #[hidden_repr(packed)] //~ ERROR may not be used on #[repr(packed)] types
+ | ^^^^^^
--- /dev/null
+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))]`.
+#[pin_project]
+#[hidden_repr_cfg_not_any(packed)] //~ ERROR may not be used on #[repr(packed)] types
+struct S {
+ #[pin]
+ f: u32,
+}
+
+fn main() {}
--- /dev/null
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/cfg/packed_sneaky.rs:6:27
+ |
+6 | #[hidden_repr_cfg_not_any(packed)] //~ ERROR may not be used on #[repr(packed)] types
+ | ^^^^^^
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+struct S {
+ //~^ ERROR may not be used on structs with zero fields
+ #[cfg(any())]
+ #[pin]
+ f: u8,
+}
+
+fn main() {}
--- /dev/null
+error: #[pin_project] attribute may not be used on structs with zero fields
+ --> tests/ui/cfg/unsupported.rs:4:10
+ |
+4 | struct S {
+ | __________^
+5 | | //~^ ERROR may not be used on structs with zero fields
+6 | | #[cfg(any())]
+7 | | #[pin]
+8 | | f: u8,
+9 | | }
+ | |_^
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(!Unpin)] //~ ERROR E0119
+struct Foo<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+impl<T, U> Unpin for Foo<T, U> where T: Unpin {}
+
+#[pin_project(!Unpin)] //~ ERROR E0119
+struct Bar<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+impl<T, U> Unpin for Bar<T, U> {}
+
+#[pin_project(!Unpin)] //~ ERROR E0119
+struct Baz<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {}
+
+fn main() {}
--- /dev/null
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Foo<_, _>`
+ --> tests/ui/not_unpin/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<_, _>`
+ --> tests/ui/not_unpin/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<_, _>`
+ --> tests/ui/not_unpin/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
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project(!Unpin)] //~ ERROR E0119
+struct Foo<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
+
+#[pin_project(!Unpin)] //~ ERROR E0119
+struct Bar<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
+
+#[pin_project(!Unpin)] //~ ERROR E0119
+struct Baz<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
+
+fn main() {}
--- /dev/null
+error[E0119]: conflicting implementations of trait `_::_pin_project::UnsafeUnpin` for type `Foo<_, _>`
+ --> tests/ui/not_unpin/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 the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `_::_pin_project::UnsafeUnpin` for type `Bar<_, _>`
+ --> tests/ui/not_unpin/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 the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `_::_pin_project::UnsafeUnpin` for type `Baz<_, _>`
+ --> tests/ui/not_unpin/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 the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+use std::marker::PhantomPinned;
+
+use auxiliary_macro::add_pin_attr;
+use pin_project::pin_project;
+
+#[pin_project]
+#[add_pin_attr(struct)] //~ ERROR duplicate #[pin] attribute
+struct Foo {
+ #[pin]
+ f: PhantomPinned,
+}
+
+#[add_pin_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
+#[pin_project]
+struct Bar {
+ #[pin]
+ f: PhantomPinned,
+}
+
+fn main() {}
--- /dev/null
+error: duplicate #[pin] attribute
+ --> tests/ui/pin_project/add-attr-to-struct.rs:7:1
+ |
+7 | #[add_pin_attr(struct)] //~ ERROR duplicate #[pin] attribute
+ | ^^^^^^^^^^^^^^^^^^^^^^^
+ |
+ = note: this error originates in the attribute macro `add_pin_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: #[pin] attribute may only be used on fields of structs or variants
+ --> tests/ui/pin_project/add-attr-to-struct.rs:13:1
+ |
+13 | #[add_pin_attr(struct)] //~ ERROR #[pin] attribute may only be used on fields of structs or variants
+ | ^^^^^^^^^^^^^^^^^^^^^^^
+ |
+ = note: this error originates in the attribute macro `add_pin_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+use auxiliary_macro::add_pinned_field;
+use pin_project::pin_project;
+
+fn is_unpin<T: Unpin>() {}
+
+#[pin_project]
+#[add_pinned_field]
+struct Foo {
+ #[pin]
+ f: u32,
+}
+
+#[add_pinned_field]
+#[pin_project]
+struct Bar {
+ #[pin]
+ f: u32,
+}
+
+fn main() {
+ is_unpin::<Foo>(); //~ ERROR E0277
+ is_unpin::<Bar>(); //~ ERROR E0277
+}
--- /dev/null
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/pin_project/add-pinned-field.rs:21:5
+ |
+21 | is_unpin::<Foo>(); //~ ERROR E0277
+ | ^^^^^^^^^^^^^^^ within `__Foo<'_>`, the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `__Foo<'_>`
+ --> tests/ui/pin_project/add-pinned-field.rs:8:8
+ |
+8 | struct Foo {
+ | ^^^
+note: required because of the requirements on the impl of `Unpin` for `Foo`
+ --> tests/ui/pin_project/add-pinned-field.rs:6:1
+ |
+6 | #[pin_project]
+ | ^^^^^^^^^^^^^^
+7 | #[add_pinned_field]
+8 | struct Foo {
+ | ^^^
+note: required by a bound in `is_unpin`
+ --> tests/ui/pin_project/add-pinned-field.rs:4:16
+ |
+4 | fn is_unpin<T: Unpin>() {}
+ | ^^^^^ required by this bound in `is_unpin`
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/pin_project/add-pinned-field.rs:22:5
+ |
+22 | is_unpin::<Bar>(); //~ ERROR E0277
+ | ^^^^^^^^^^^^^^^ within `__Bar<'_>`, the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `__Bar<'_>`
+ --> tests/ui/pin_project/add-pinned-field.rs:15:8
+ |
+15 | struct Bar {
+ | ^^^
+note: required because of the requirements on the impl of `Unpin` for `Bar`
+ --> tests/ui/pin_project/add-pinned-field.rs:14:1
+ |
+14 | #[pin_project]
+ | ^^^^^^^^^^^^^^
+15 | struct Bar {
+ | ^^^
+note: required by a bound in `is_unpin`
+ --> tests/ui/pin_project/add-pinned-field.rs:4:16
+ |
+4 | fn is_unpin<T: Unpin>() {}
+ | ^^^^^ required by this bound in `is_unpin`
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project] //~ ERROR E0119
+struct Foo<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+impl<T, U> Drop for Foo<T, U> {
+ fn drop(&mut self) {}
+}
+
+#[pin_project(PinnedDrop)] //~ ERROR E0119
+struct Bar<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+#[pinned_drop]
+impl<T, U> PinnedDrop for Bar<T, U> {
+ fn drop(self: Pin<&mut Self>) {}
+}
+
+impl<T, U> Drop for Bar<T, U> {
+ fn drop(&mut self) {}
+}
+
+fn main() {}
--- /dev/null
+error[E0119]: conflicting implementations of trait `_::FooMustNotImplDrop` for type `Foo<_, _>`
+ --> tests/ui/pin_project/conflict-drop.rs:5:1
+ |
+5 | #[pin_project] //~ ERROR E0119
+ | ^^^^^^^^^^^^^^
+ | |
+ | first implementation here
+ | conflicting implementation for `Foo<_, _>`
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `std::ops::Drop` for type `Bar<_, _>`
+ --> tests/ui/pin_project/conflict-drop.rs:16:15
+ |
+16 | #[pin_project(PinnedDrop)] //~ ERROR E0119
+ | ^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
+...
+28 | impl<T, U> Drop for Bar<T, U> {
+ | ----------------------------- first implementation here
--- /dev/null
+use pin_project::pin_project;
+
+// The same implementation.
+
+#[pin_project] //~ ERROR E0119
+struct Foo<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+// conflicting implementations
+impl<T, U> Unpin for Foo<T, U> where T: Unpin {} // Conditional Unpin impl
+
+// The implementation that under different conditions.
+
+#[pin_project] //~ ERROR E0119
+struct Bar<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+// conflicting implementations
+impl<T, U> Unpin for Bar<T, U> {} // Non-conditional Unpin impl
+
+#[pin_project] //~ ERROR E0119
+struct Baz<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+// conflicting implementations
+impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {} // Conditional Unpin impl
+
+fn main() {}
--- /dev/null
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Foo<_, _>`
+ --> tests/ui/pin_project/conflict-unpin.rs:5:1
+ |
+5 | #[pin_project] //~ ERROR E0119
+ | ^^^^^^^^^^^^^^ conflicting implementation for `Foo<_, _>`
+...
+13 | impl<T, U> Unpin for Foo<T, U> where T: Unpin {} // Conditional Unpin impl
+ | ------------------------------ first implementation here
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Bar<_, _>`
+ --> tests/ui/pin_project/conflict-unpin.rs:17:1
+ |
+17 | #[pin_project] //~ ERROR E0119
+ | ^^^^^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
+...
+25 | impl<T, U> Unpin for Bar<T, U> {} // Non-conditional Unpin impl
+ | ------------------------------ first implementation here
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Baz<_, _>`
+ --> tests/ui/pin_project/conflict-unpin.rs:27:1
+ |
+27 | #[pin_project] //~ ERROR E0119
+ | ^^^^^^^^^^^^^^ conflicting implementation for `Baz<_, _>`
+...
+35 | impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {} // Conditional Unpin impl
+ | -------------------------------------------- first implementation here
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project] //~ ERROR E0119
+struct Foo<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+unsafe impl<T, U> UnsafeUnpin for Foo<T, U> where T: Unpin {}
+
+#[pin_project] //~ ERROR E0119
+struct Bar<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+unsafe impl<T, U> UnsafeUnpin for Bar<T, U> {}
+
+#[pin_project] //~ ERROR E0119
+struct Baz<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for Baz<T, U> {}
+
+fn main() {}
--- /dev/null
+error[E0119]: conflicting implementations of trait `_::_pin_project::UnsafeUnpin` for type `Foo<_, _>`
+ --> tests/ui/pin_project/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 the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `_::_pin_project::UnsafeUnpin` for type `Bar<_, _>`
+ --> tests/ui/pin_project/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 the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0119]: conflicting implementations of trait `_::_pin_project::UnsafeUnpin` for type `Baz<_, _>`
+ --> tests/ui/pin_project/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 the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+/// Only named projected types can be imported.
+/// See visibility.rs for named projected types.
+
+mod pub_ {
+ use pin_project::pin_project;
+
+ #[pin_project]
+ pub struct Default(());
+
+ #[pin_project(project_replace)]
+ pub struct Replace(());
+}
+#[allow(unused_imports)]
+pub mod use_ {
+ #[rustfmt::skip]
+ use crate::pub_::__DefaultProjection; //~ ERROR E0432
+ #[rustfmt::skip]
+ use crate::pub_::__DefaultProjectionRef; //~ ERROR E0432
+ #[rustfmt::skip]
+ use crate::pub_::__ReplaceProjection; //~ ERROR E0432
+ #[rustfmt::skip]
+ use crate::pub_::__ReplaceProjectionOwned; //~ ERROR E0432
+ #[rustfmt::skip]
+ use crate::pub_::__ReplaceProjectionRef; //~ ERROR E0432
+
+ // Confirm that the visibility of the original type is not changed.
+ pub use crate::pub_::{Default, Replace};
+}
+
+fn main() {}
--- /dev/null
+error[E0432]: unresolved import `crate::pub_::__DefaultProjection`
+ --> tests/ui/pin_project/import_unnamed.rs:16:9
+ |
+16 | use crate::pub_::__DefaultProjection; //~ ERROR E0432
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__DefaultProjection` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__DefaultProjectionRef`
+ --> tests/ui/pin_project/import_unnamed.rs:18:9
+ |
+18 | use crate::pub_::__DefaultProjectionRef; //~ ERROR E0432
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__DefaultProjectionRef` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__ReplaceProjection`
+ --> tests/ui/pin_project/import_unnamed.rs:20:9
+ |
+20 | use crate::pub_::__ReplaceProjection; //~ ERROR E0432
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__ReplaceProjection` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__ReplaceProjectionOwned`
+ --> tests/ui/pin_project/import_unnamed.rs:22:9
+ |
+22 | use crate::pub_::__ReplaceProjectionOwned; //~ ERROR E0432
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__ReplaceProjectionOwned` in `pub_`
+
+error[E0432]: unresolved import `crate::pub_::__ReplaceProjectionRef`
+ --> tests/ui/pin_project/import_unnamed.rs:24:9
+ |
+24 | use crate::pub_::__ReplaceProjectionRef; //~ ERROR E0432
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `__ReplaceProjectionRef` in `pub_`
--- /dev/null
+mod pin_argument {
+ use pin_project::pin_project;
+
+ #[pin_project]
+ struct Struct {
+ #[pin()] //~ ERROR unexpected token
+ f: (),
+ }
+
+ #[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
+ f: (),
+ },
+ }
+}
+
+mod pin_attribute {
+ use pin_project::pin_project;
+
+ #[pin_project]
+ struct DuplicateStruct {
+ #[pin]
+ #[pin] //~ ERROR duplicate #[pin] attribute
+ f: (),
+ }
+
+ #[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
+ f: (),
+ },
+ }
+}
+
+mod pin_item {
+ use pin_project::pin_project;
+
+ #[pin_project]
+ #[pin] //~ ERROR may only be used on fields of structs or variants
+ struct Struct {
+ #[pin]
+ f: (),
+ }
+
+ #[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(()),
+ }
+}
+
+mod pin_project_argument {
+ use pin_project::pin_project;
+
+ #[pin_project(Replace)] //~ ERROR `Replace` argument was removed, use `project_replace` argument instead
+ struct RemovedReplace(#[pin] ());
+
+ #[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(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, 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(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(project_replace)] //~ ERROR `project_replace` argument requires a value when used on enums
+ enum ProjectReplaceEnum {
+ V(#[pin] ()),
+ }
+}
+
+mod pin_project_conflict_naming {
+ use pin_project::pin_project;
+
+ #[pin_project(project = OrigAndProj)] //~ ERROR name `OrigAndProj` is the same as the original type name
+ struct OrigAndProj(#[pin] ());
+
+ #[pin_project(project_ref = OrigAndProjRef)] //~ ERROR name `OrigAndProjRef` is the same as the original type name
+ struct OrigAndProjRef(#[pin] ());
+
+ #[pin_project(project_replace = OrigAndProjOwn)] //~ ERROR name `OrigAndProjOwn` is the same as the original type name
+ struct OrigAndProjOwn(#[pin] ());
+
+ #[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: (),
+ }
+
+ #[pin_project]
+ impl Impl {} //~ ERROR may only be used on structs or enums
+}
+
+// #[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() {}
--- /dev/null
+error: unexpected token: `()`
+ --> tests/ui/pin_project/invalid.rs:6:14
+ |
+6 | #[pin()] //~ ERROR unexpected token
+ | ^^
+
+error: unexpected token: `(foo)`
+ --> tests/ui/pin_project/invalid.rs:11:29
+ |
+11 | struct TupleStruct(#[pin(foo)] ()); //~ ERROR unexpected token
+ | ^^^^^
+
+error: unexpected token: `(foo)`
+ --> tests/ui/pin_project/invalid.rs:15:16
+ |
+15 | V(#[pin(foo)] ()), //~ ERROR unexpected token
+ | ^^^^^
+
+error: unexpected token: `(foo)`
+ --> tests/ui/pin_project/invalid.rs:21:18
+ |
+21 | #[pin(foo)] //~ ERROR unexpected token
+ | ^^^^^
+
+error: duplicate #[pin] attribute
+ --> tests/ui/pin_project/invalid.rs:33:9
+ |
+33 | #[pin] //~ ERROR duplicate #[pin] attribute
+ | ^^^^^^
+
+error: duplicate #[pin] attribute
+ --> tests/ui/pin_project/invalid.rs:40:9
+ |
+40 | #[pin]
+ | ^^^^^^
+
+error: duplicate #[pin] attribute
+ --> tests/ui/pin_project/invalid.rs:49:13
+ |
+49 | #[pin]
+ | ^^^^^^
+
+error: duplicate #[pin] attribute
+ --> tests/ui/pin_project/invalid.rs:59:13
+ |
+59 | #[pin] //~ ERROR duplicate #[pin] attribute
+ | ^^^^^^
+
+error: #[pin] attribute may only be used on fields of structs or variants
+ --> tests/ui/pin_project/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
+ --> tests/ui/pin_project/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
+ --> tests/ui/pin_project/invalid.rs:82:5
+ |
+82 | #[pin] //~ ERROR may only be used on fields of structs or variants
+ | ^^^^^^
+
+error: `Replace` argument was removed, use `project_replace` argument instead
+ --> tests/ui/pin_project/invalid.rs:91:19
+ |
+91 | #[pin_project(Replace)] //~ ERROR `Replace` argument was removed, use `project_replace` argument instead
+ | ^^^^^^^
+
+error: expected identifier
+ --> tests/ui/pin_project/invalid.rs:94:31
+ |
+94 | #[pin_project(UnsafeUnpin,,)] //~ ERROR expected identifier
+ | ^
+
+error: unexpected argument: Foo
+ --> tests/ui/pin_project/invalid.rs:97:19
+ |
+97 | #[pin_project(Foo)] //~ ERROR unexpected argument
+ | ^^^
+
+error: expected identifier
+ --> tests/ui/pin_project/invalid.rs:100:19
+ |
+100 | #[pin_project(,UnsafeUnpin)] //~ ERROR expected identifier
+ | ^
+
+error: expected `,`
+ --> tests/ui/pin_project/invalid.rs:106:30
+ |
+106 | #[pin_project(PinnedDrop PinnedDrop)] //~ ERROR expected `,`
+ | ^^^^^^^^^^
+
+error: duplicate `PinnedDrop` argument
+ --> tests/ui/pin_project/invalid.rs:109:31
+ |
+109 | #[pin_project(PinnedDrop, PinnedDrop)] //~ ERROR duplicate `PinnedDrop` argument
+ | ^^^^^^^^^^
+
+error: duplicate `UnsafeUnpin` argument
+ --> tests/ui/pin_project/invalid.rs:112:32
+ |
+112 | #[pin_project(UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
+ | ^^^^^^^^^^^
+
+error: duplicate `!Unpin` argument
+ --> tests/ui/pin_project/invalid.rs:115:27
+ |
+115 | #[pin_project(!Unpin, !Unpin)] //~ ERROR duplicate `!Unpin` argument
+ | ^^^^^^
+
+error: duplicate `UnsafeUnpin` argument
+ --> tests/ui/pin_project/invalid.rs:118:44
+ |
+118 | #[pin_project(PinnedDrop, UnsafeUnpin, UnsafeUnpin)] //~ ERROR duplicate `UnsafeUnpin` argument
+ | ^^^^^^^^^^^
+
+error: duplicate `PinnedDrop` argument
+ --> tests/ui/pin_project/invalid.rs:121:44
+ |
+121 | #[pin_project(PinnedDrop, UnsafeUnpin, PinnedDrop, UnsafeUnpin)] //~ ERROR duplicate `PinnedDrop` argument
+ | ^^^^^^^^^^
+
+error: duplicate `project` argument
+ --> tests/ui/pin_project/invalid.rs:124:32
+ |
+124 | #[pin_project(project = A, project = B)] //~ ERROR duplicate `project` argument
+ | ^^^^^^^^^^^
+
+error: duplicate `project` argument
+ --> tests/ui/pin_project/invalid.rs:127:49
+ |
+127 | #[pin_project(project = A, project_ref = A, project = B)] //~ ERROR duplicate `project` argument
+ | ^^^^^^^^^^^
+
+error: duplicate `project_ref` argument
+ --> tests/ui/pin_project/invalid.rs:130:36
+ |
+130 | #[pin_project(project_ref = A, project_ref = B)] //~ ERROR duplicate `project_ref` argument
+ | ^^^^^^^^^^^^^^^
+
+error: duplicate `project_replace` argument
+ --> tests/ui/pin_project/invalid.rs:133:40
+ |
+133 | #[pin_project(project_replace = A, project_replace = B)] //~ ERROR duplicate `project_replace` argument
+ | ^^^^^^^^^^^^^^^^^^^
+
+error: duplicate `project_replace` argument
+ --> tests/ui/pin_project/invalid.rs:136:36
+ |
+136 | #[pin_project(project_replace, project_replace = B)] //~ ERROR duplicate `project_replace` argument
+ | ^^^^^^^^^^^^^^^^^^^
+
+error: duplicate `project_replace` argument
+ --> tests/ui/pin_project/invalid.rs:139:40
+ |
+139 | #[pin_project(project_replace = A, project_replace)] //~ ERROR duplicate `project_replace` argument
+ | ^^^^^^^^^^^^^^^
+
+error: arguments `PinnedDrop` and `project_replace` are mutually exclusive
+ --> tests/ui/pin_project/invalid.rs:145:19
+ |
+145 | #[pin_project(PinnedDrop, project_replace)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
+ | ^^^^^^^^^^
+
+error: arguments `PinnedDrop` and `project_replace` are mutually exclusive
+ --> tests/ui/pin_project/invalid.rs:148:49
+ |
+148 | #[pin_project(project_replace, UnsafeUnpin, PinnedDrop)] //~ ERROR arguments `PinnedDrop` and `project_replace` are mutually exclusive
+ | ^^^^^^^^^^
+
+error: arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+ --> tests/ui/pin_project/invalid.rs:151:19
+ |
+151 | #[pin_project(UnsafeUnpin, !Unpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+ | ^^^^^^^^^^^
+
+error: arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+ --> tests/ui/pin_project/invalid.rs:154:39
+ |
+154 | #[pin_project(!Unpin, PinnedDrop, UnsafeUnpin)] //~ ERROR arguments `UnsafeUnpin` and `!Unpin` are mutually exclusive
+ | ^^^^^^^^^^^
+
+error: expected `!Unpin`, found `!`
+ --> tests/ui/pin_project/invalid.rs:157:19
+ |
+157 | #[pin_project(!)] //~ ERROR expected `!Unpin`, found `!`
+ | ^
+
+error: unexpected argument: Unpin
+ --> tests/ui/pin_project/invalid.rs:160:19
+ |
+160 | #[pin_project(Unpin)] //~ ERROR unexpected argument
+ | ^^^^^
+
+error: expected `project = <identifier>`, found `project`
+ --> tests/ui/pin_project/invalid.rs:163:19
+ |
+163 | #[pin_project(project)] //~ ERROR expected `project = <identifier>`, found `project`
+ | ^^^^^^^
+
+error: expected `project = <identifier>`, found `project =`
+ --> tests/ui/pin_project/invalid.rs:166:19
+ |
+166 | #[pin_project(project = )] //~ ERROR expected `project = <identifier>`, found `project =`
+ | ^^^^^^^^^
+
+error: expected identifier
+ --> tests/ui/pin_project/invalid.rs:169:29
+ |
+169 | #[pin_project(project = !)] //~ ERROR expected identifier
+ | ^
+
+error: expected `project_ref = <identifier>`, found `project_ref`
+ --> tests/ui/pin_project/invalid.rs:172:19
+ |
+172 | #[pin_project(project_ref)] //~ ERROR expected `project_ref = <identifier>`, found `project_ref`
+ | ^^^^^^^^^^^
+
+error: expected `project_ref = <identifier>`, found `project_ref =`
+ --> tests/ui/pin_project/invalid.rs:175:19
+ |
+175 | #[pin_project(project_ref = )] //~ ERROR expected `project_ref = <identifier>`, found `project_ref =`
+ | ^^^^^^^^^^^^^
+
+error: expected identifier
+ --> tests/ui/pin_project/invalid.rs:178:33
+ |
+178 | #[pin_project(project_ref = !)] //~ ERROR expected identifier
+ | ^
+
+error: expected `project_replace = <identifier>`, found `project_replace =`
+ --> tests/ui/pin_project/invalid.rs:184:19
+ |
+184 | #[pin_project(project_replace = )] //~ ERROR expected `project_replace = <identifier>`, found `project_replace =`
+ | ^^^^^^^^^^^^^^^^^
+
+error: expected identifier
+ --> tests/ui/pin_project/invalid.rs:187:37
+ |
+187 | #[pin_project(project_replace = !)] //~ ERROR expected identifier
+ | ^
+
+error: `project_replace` argument requires a value when used on enums
+ --> tests/ui/pin_project/invalid.rs:190:19
+ |
+190 | #[pin_project(project_replace)] //~ ERROR `project_replace` argument requires a value when used on enums
+ | ^^^^^^^^^^^^^^^
+
+error: name `OrigAndProj` is the same as the original type name
+ --> tests/ui/pin_project/invalid.rs:199:29
+ |
+199 | #[pin_project(project = OrigAndProj)] //~ ERROR name `OrigAndProj` is the same as the original type name
+ | ^^^^^^^^^^^
+
+error: name `OrigAndProjRef` is the same as the original type name
+ --> tests/ui/pin_project/invalid.rs:202:33
+ |
+202 | #[pin_project(project_ref = OrigAndProjRef)] //~ ERROR name `OrigAndProjRef` is the same as the original type name
+ | ^^^^^^^^^^^^^^
+
+error: name `OrigAndProjOwn` is the same as the original type name
+ --> tests/ui/pin_project/invalid.rs:205:37
+ |
+205 | #[pin_project(project_replace = OrigAndProjOwn)] //~ ERROR name `OrigAndProjOwn` is the same as the original type name
+ | ^^^^^^^^^^^^^^
+
+error: name `A` is already specified by `project` argument
+ --> tests/ui/pin_project/invalid.rs:208:46
+ |
+208 | #[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
+ --> tests/ui/pin_project/invalid.rs:211:50
+ |
+211 | #[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
+ --> tests/ui/pin_project/invalid.rs:214:54
+ |
+214 | #[pin_project(project_ref = A, project_replace = A)] //~ ERROR name `A` is already specified by `project_ref` argument
+ | ^
+
+error: duplicate #[pin_project] attribute
+ --> tests/ui/pin_project/invalid.rs:222:5
+ |
+222 | #[pin_project] //~ ERROR duplicate #[pin_project] attribute
+ | ^^^^^^^^^^^^^^
+
+error: #[pin_project] attribute may not be used on structs with zero fields
+ --> tests/ui/pin_project/invalid.rs:230:19
+ |
+230 | 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
+ --> tests/ui/pin_project/invalid.rs:233:23
+ |
+233 | 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
+ --> tests/ui/pin_project/invalid.rs:236:12
+ |
+236 | struct UnitStruct; //~ ERROR may not be used on structs with zero fields
+ | ^^^^^^^^^^
+
+error: #[pin_project] attribute may not be used on enums without variants
+ --> tests/ui/pin_project/invalid.rs:239:20
+ |
+239 | enum EnumEmpty {} //~ ERROR may not be used on enums without variants
+ | ^^
+
+error: #[pin_project] attribute may not be used on enums with discriminants
+ --> tests/ui/pin_project/invalid.rs:243:13
+ |
+243 | V = 2, //~ ERROR may not be used on enums with discriminants
+ | ^
+
+error: #[pin_project] attribute may not be used on enums with zero fields
+ --> tests/ui/pin_project/invalid.rs:248:9
+ |
+248 | / Unit, //~ ERROR may not be used on enums with zero fields
+249 | | Tuple(),
+250 | | Struct {},
+ | |__________________^
+
+error: #[pin_project] attribute may only be used on structs or enums
+ --> tests/ui/pin_project/invalid.rs:254:5
+ |
+254 | / union Union {
+255 | | //~^ ERROR may only be used on structs or enums
+256 | | f: (),
+257 | | }
+ | |_____^
+
+error: #[pin_project] attribute may only be used on structs or enums
+ --> tests/ui/pin_project/invalid.rs:260:5
+ |
+260 | impl Impl {} //~ ERROR may only be used on structs or enums
+ | ^^^^^^^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/invalid.rs:268:12
+ |
+268 | #[repr(packed)]
+ | ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/invalid.rs:272:12
+ |
+272 | #[repr(packed)]
+ | ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/invalid.rs:276:12
+ |
+276 | #[repr(packed)]
+ | ^^^^^^
--- /dev/null
+use std::marker::PhantomPinned;
+
+use pin_project::pin_project;
+
+#[pin_project]
+struct S<T> {
+ #[pin]
+ f: T,
+}
+
+struct __S {}
+
+impl Unpin for __S {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+ is_unpin::<S<PhantomPinned>>(); //~ ERROR E0277
+}
--- /dev/null
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/pin_project/overlapping_unpin_struct.rs:18:5
+ |
+18 | is_unpin::<S<PhantomPinned>>(); //~ ERROR E0277
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `_::__S<'_, PhantomPinned>`, the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `_::__S<'_, PhantomPinned>`
+ --> tests/ui/pin_project/overlapping_unpin_struct.rs:6:8
+ |
+6 | struct S<T> {
+ | ^
+note: required because of the requirements on the impl of `Unpin` for `S<PhantomPinned>`
+ --> tests/ui/pin_project/overlapping_unpin_struct.rs:5:1
+ |
+5 | #[pin_project]
+ | ^^^^^^^^^^^^^^
+6 | struct S<T> {
+ | ^^^^
+note: required by a bound in `is_unpin`
+ --> tests/ui/pin_project/overlapping_unpin_struct.rs:15:16
+ |
+15 | fn is_unpin<T: Unpin>() {}
+ | ^^^^^ required by this bound in `is_unpin`
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+// https://discord.com/channels/273534239310479360/512792629516173323/870075511009857617
+
+extern crate pin_project as pin_project_orig;
+extern crate self as pin_project;
+
+pub use ::pin_project_orig::*;
+mod __private {
+ pub use ::pin_project_orig::__private::*;
+ pub trait Drop {}
+}
+
+use std::{marker::PhantomPinned, mem};
+
+#[pin_project] //~ ERROR conflicting implementations of trait `_::FooMustNotImplDrop`
+struct S {
+ #[pin]
+ f: (u8, PhantomPinned),
+}
+
+impl Drop for S {
+ fn drop(&mut self) {
+ let prev = &self.f.0 as *const _ as usize;
+ let moved = mem::take(&mut self.f); // move pinned field
+ let moved = &moved.0 as *const _ as usize;
+ assert_eq!(prev, moved); // panic
+ }
+}
+
+fn main() {
+ let mut x = Box::pin(S { f: (1, PhantomPinned) });
+ let _f = x.as_mut().project().f; // first mutable access
+}
--- /dev/null
+error[E0119]: conflicting implementations of trait `_::SMustNotImplDrop` for type `S`
+ --> tests/ui/pin_project/override-priv-mod.rs:14:1
+ |
+14 | #[pin_project] //~ ERROR conflicting implementations of trait `_::FooMustNotImplDrop`
+ | ^^^^^^^^^^^^^^
+ | |
+ | first implementation here
+ | conflicting implementation for `S`
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+use pin_project::pin_project;
+
+// #[repr(packed)] cannot be apply on enums and will be rejected by rustc.
+// However, we should not rely on the behavior of rustc that rejects this.
+// https://github.com/taiki-e/pin-project/pull/324#discussion_r612388001
+
+#[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() {}
--- /dev/null
+error: #[repr(packed)] attribute should be applied to a struct or union
+ --> tests/ui/pin_project/packed-enum.rs:13:8
+ |
+13 | #[repr(packed)] //~ ERROR E0517
+ | ^^^^^^
+
+error: #[repr(packed)] attribute should be applied to a struct or union
+ --> tests/ui/pin_project/packed-enum.rs:18:8
+ |
+18 | #[repr(packed)] //~ ERROR E0517
+ | ^^^^^^
+
+error[E0517]: attribute should be applied to a struct or union
+ --> tests/ui/pin_project/packed-enum.rs:7:8
+ |
+7 | #[repr(packed)] //~ ERROR E0517
+ | ^^^^^^
+8 | / enum E1 {
+9 | | V(()),
+10 | | }
+ | |_- not a struct or union
+
+error[E0517]: attribute should be applied to a struct or union
+ --> tests/ui/pin_project/packed-enum.rs:13:8
+ |
+13 | #[repr(packed)] //~ ERROR E0517
+ | ^^^^^^
+14 | / enum E2 {
+15 | | V(()),
+16 | | }
+ | |_- not a struct or union
+
+error[E0517]: attribute should be applied to a struct or union
+ --> tests/ui/pin_project/packed-enum.rs:18:8
+ |
+18 | #[repr(packed)] //~ ERROR E0517
+ | ^^^^^^
+19 | #[pin_project]
+20 | / enum E3 {
+21 | | V(()),
+22 | | }
+ | |_- not a struct or union
--- /dev/null
+use pin_project::pin_project;
+
+// #[repr(packed = "")] is not valid format of #[repr(packed)] and will be
+// rejected by rustc.
+// However, we should not rely on the behavior of rustc that rejects this.
+// https://github.com/taiki-e/pin-project/pull/324#discussion_r612388001
+
+// https://github.com/taiki-e/pin-project/pull/324#discussion_r612388001
+// https://github.com/rust-lang/rust/issues/83921
+// #[repr(packed = "")] //~ ERROR E0552
+// struct S1 {
+// f: (),
+// }
+
+#[pin_project]
+#[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+struct S2 {
+ f: (),
+}
+
+#[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+#[pin_project]
+struct S3 {
+ f: (),
+}
+
+fn main() {}
--- /dev/null
+error: #[repr(packed)] attribute should not be name-value pair
+ --> tests/ui/pin_project/packed-name-value.rs:16:8
+ |
+16 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+ | ^^^^^^^^^^^
+
+error: #[repr(packed)] attribute should not be name-value pair
+ --> tests/ui/pin_project/packed-name-value.rs:21:8
+ |
+21 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+ | ^^^^^^^^^^^
+
+error[E0693]: incorrect `repr(packed)` attribute format
+ --> tests/ui/pin_project/packed-name-value.rs:16:8
+ |
+16 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+ | ^^^^^^^^^^^ help: use parentheses instead: `packed()`
+
+error[E0693]: incorrect `repr(packed)` attribute format
+ --> tests/ui/pin_project/packed-name-value.rs:21:8
+ |
+21 | #[repr(packed = "")] //~ ERROR attribute should not be name-value pair
+ | ^^^^^^^^^^^ help: use parentheses instead: `packed()`
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+#[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
+struct Packed1 {
+ #[pin]
+ 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 Packed2 {
+ #[pin]
+ f: u8,
+}
+
+#[pin_project]
+#[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
+struct PackedN1 {
+ #[pin]
+ 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() {}
--- /dev/null
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed.rs:4:8
+ |
+4 | #[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
+ | ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed.rs:11:8
+ |
+11 | #[repr(packed, C)] //~ ERROR may not be used on #[repr(packed)] types
+ | ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed.rs:19:8
+ |
+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
+ --> tests/ui/pin_project/packed.rs:26:8
+ |
+26 | #[repr(packed(2))] //~ ERROR may not be used on #[repr(packed)] types
+ | ^^^^^^^^^
--- /dev/null
+use std::pin::Pin;
+
+use auxiliary_macro::{hidden_repr, hidden_repr2};
+use pin_project::{pin_project, pinned_drop, UnsafeUnpin};
+
+#[pin_project] //~ ERROR may not be used on #[repr(packed)] types
+#[hidden_repr(packed)]
+struct A {
+ #[pin]
+ f: u32,
+}
+
+#[hidden_repr2]
+#[pin_project] //~ ERROR may not be used on #[repr(packed)] types
+struct B {
+ #[pin]
+ f: u32,
+}
+
+#[pin_project(UnsafeUnpin)] //~ ERROR may not be used on #[repr(packed)] types
+#[hidden_repr(packed)]
+struct C {
+ #[pin]
+ f: u32,
+}
+
+unsafe impl UnsafeUnpin for C {}
+
+#[pin_project(PinnedDrop)] //~ ERROR may not be used on #[repr(packed)] types
+#[hidden_repr(packed)]
+struct D {
+ #[pin]
+ f: u32,
+}
+
+#[pinned_drop]
+impl PinnedDrop for D {
+ fn drop(self: Pin<&mut Self>) {}
+}
+
+fn main() {}
--- /dev/null
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed_sneaky-1.rs:7:15
+ |
+7 | #[hidden_repr(packed)]
+ | ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed_sneaky-1.rs:13:1
+ |
+13 | #[hidden_repr2]
+ | ^^^^^^^^^^^^^^^
+ |
+ = note: this error originates in the attribute macro `hidden_repr2` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed_sneaky-1.rs:21:15
+ |
+21 | #[hidden_repr(packed)]
+ | ^^^^^^
+
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed_sneaky-1.rs:30:15
+ |
+30 | #[hidden_repr(packed)]
+ | ^^^^^^
--- /dev/null
+use auxiliary_macro::hidden_repr_macro;
+use pin_project::pin_project;
+
+hidden_repr_macro! { //~ ERROR may not be used on #[repr(packed)] types
+ #[pin_project]
+ struct B {
+ #[pin]
+ f: u32,
+ }
+}
+
+fn main() {}
--- /dev/null
+error: #[pin_project] attribute may not be used on #[repr(packed)] types
+ --> tests/ui/pin_project/packed_sneaky-2.rs:4:1
+ |
+4 | / hidden_repr_macro! { //~ ERROR may not be used on #[repr(packed)] types
+5 | | #[pin_project]
+6 | | struct B {
+7 | | #[pin]
+8 | | f: u32,
+9 | | }
+10 | | }
+ | |_^
+ |
+ = note: this error originates in the macro `hidden_repr_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+use auxiliary_macro::{hidden_repr_macro, HiddenRepr};
+use pin_project::pin_project;
+
+hidden_repr_macro! {} //~ ERROR expected item after attributes
+#[pin_project]
+struct S1 {
+ #[pin]
+ f: u32,
+}
+
+macro_rules! hidden_repr_macro2 {
+ () => {
+ #[repr(packed)] //~ ERROR expected item after attributes
+ };
+}
+
+hidden_repr_macro2! {}
+#[pin_project]
+struct S2 {
+ #[pin]
+ f: u32,
+}
+
+#[derive(HiddenRepr)] //~ ERROR expected item after attributes
+struct S3 {}
+#[pin_project]
+struct S4 {
+ #[pin]
+ f: u32,
+}
+
+fn main() {}
--- /dev/null
+error: expected item after attributes
+ --> tests/ui/pin_project/packed_sneaky-3.rs:4:1
+ |
+4 | hidden_repr_macro! {} //~ ERROR expected item after attributes
+ | ^^^^^^^^^^^^^^^^^^^^^
+ |
+ = note: this error originates in the macro `hidden_repr_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: expected item after attributes
+ --> tests/ui/pin_project/packed_sneaky-3.rs:13:9
+ |
+13 | #[repr(packed)] //~ ERROR expected item after attributes
+ | ^^^^^^^^^^^^^^^
+...
+17 | hidden_repr_macro2! {}
+ | ---------------------- in this macro invocation
+ |
+ = note: this error originates in the macro `hidden_repr_macro2` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: expected item after attributes
+ --> tests/ui/pin_project/packed_sneaky-3.rs:24:10
+ |
+24 | #[derive(HiddenRepr)] //~ ERROR expected item after attributes
+ | ^^^^^^^^^^
+ |
+ = note: this error originates in the derive macro `HiddenRepr` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: proc-macro derive produced unparseable tokens
+ --> tests/ui/pin_project/packed_sneaky-3.rs:24:10
+ |
+24 | #[derive(HiddenRepr)] //~ ERROR expected item after attributes
+ | ^^^^^^^^^^
--- /dev/null
+// https://github.com/taiki-e/pin-project/issues/342
+
+#![allow(unaligned_references)]
+
+use auxiliary_macro::hidden_repr2;
+use pin_project::pin_project;
+
+#[pin_project] //~ ERROR reference to packed field is unaligned
+#[hidden_repr2]
+struct A {
+ #[pin]
+ f: u32,
+}
+
+fn main() {}
--- /dev/null
+error: reference to packed field is unaligned
+ --> tests/ui/pin_project/packed_sneaky-4.rs:8:1
+ |
+8 | #[pin_project] //~ ERROR reference to packed field is unaligned
+ | ^^^^^^^^^^^^^^
+ |
+note: the lint level is defined here
+ --> tests/ui/pin_project/packed_sneaky-4.rs:8:1
+ |
+8 | #[pin_project] //~ ERROR reference to packed field is unaligned
+ | ^^^^^^^^^^^^^^
+ = 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 #82523 <https://github.com/rust-lang/rust/issues/82523>
+ = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+ = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+// Even if allows private_in_public, these are errors.
+
+#![allow(private_in_public)]
+
+pub enum PublicEnum {
+ V(PrivateEnum), //~ ERROR E0446
+}
+
+enum PrivateEnum {
+ V(u8),
+}
+
+mod foo {
+ pub(crate) enum CrateEnum {
+ V(PrivateEnum), //~ ERROR E0446
+ }
+
+ enum PrivateEnum {
+ V(u8),
+ }
+}
+
+fn main() {}
--- /dev/null
+error[E0446]: private type `PrivateEnum` in public interface
+ --> tests/ui/pin_project/private_in_public-enum.rs:6:7
+ |
+6 | V(PrivateEnum), //~ ERROR E0446
+ | ^^^^^^^^^^^ can't leak private type
+...
+9 | enum PrivateEnum {
+ | ---------------- `PrivateEnum` declared as private
+
+error[E0446]: private type `foo::PrivateEnum` in public interface
+ --> tests/ui/pin_project/private_in_public-enum.rs:15:11
+ |
+15 | V(PrivateEnum), //~ ERROR E0446
+ | ^^^^^^^^^^^ can't leak private type
+...
+18 | enum PrivateEnum {
+ | ---------------- `foo::PrivateEnum` declared as private
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct Struct<T: ?Sized> {
+ f: T,
+}
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct TupleStruct<T: ?Sized>(T);
+
+fn main() {}
--- /dev/null
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/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 `std::marker::Sized`
+ |
+note: required because it appears within the type `Struct<T>`
+ --> tests/ui/pin_project/project_replace_unsized.rs:4:8
+ |
+4 | struct Struct<T: ?Sized> {
+ | ^^^^^^
+ = help: unsized fn params are gated as an unstable feature
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+4 - struct Struct<T: ?Sized> {
+4 + struct Struct<T> {
+ |
+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
+ --> tests/ui/pin_project/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 `std::marker::Sized`
+ |
+note: required because it appears within the type `Struct<T>`
+ --> tests/ui/pin_project/project_replace_unsized.rs:4:8
+ |
+4 | struct Struct<T: ?Sized> {
+ | ^^^^^^
+note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
+ --> src/lib.rs
+ |
+ | impl<T> UnsafeOverwriteGuard<T> {
+ | ^ required by this bound in `UnsafeOverwriteGuard::<T>::new`
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+4 - struct Struct<T: ?Sized> {
+4 + struct Struct<T> {
+ |
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/project_replace_unsized.rs:5:5
+ |
+3 | #[pin_project(project_replace)] //~ ERROR E0277
+ | ------------------------------- required by a bound introduced by this call
+4 | struct Struct<T: ?Sized> {
+ | - this type parameter needs to be `std::marker::Sized`
+5 | f: T,
+ | ^ doesn't have a size known at compile-time
+ |
+note: required by a bound in `std::ptr::read`
+ --> $RUST/core/src/ptr/mod.rs
+ |
+ | pub const unsafe fn read<T>(src: *const T) -> T {
+ | ^ required by this bound in `std::ptr::read`
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+4 - struct Struct<T: ?Sized> {
+4 + struct Struct<T> {
+ |
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/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 `std::marker::Sized`
+ |
+note: required because it appears within the type `TupleStruct<T>`
+ --> tests/ui/pin_project/project_replace_unsized.rs:9:8
+ |
+9 | struct TupleStruct<T: ?Sized>(T);
+ | ^^^^^^^^^^^
+ = help: unsized fn params are gated as an unstable feature
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+9 - struct TupleStruct<T: ?Sized>(T);
+9 + struct TupleStruct<T>(T);
+ |
+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
+ --> tests/ui/pin_project/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 `std::marker::Sized`
+ |
+note: required because it appears within the type `TupleStruct<T>`
+ --> tests/ui/pin_project/project_replace_unsized.rs:9:8
+ |
+9 | struct TupleStruct<T: ?Sized>(T);
+ | ^^^^^^^^^^^
+note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
+ --> src/lib.rs
+ |
+ | impl<T> UnsafeOverwriteGuard<T> {
+ | ^ required by this bound in `UnsafeOverwriteGuard::<T>::new`
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+9 - struct TupleStruct<T: ?Sized>(T);
+9 + struct TupleStruct<T>(T);
+ |
--- /dev/null
+#![feature(unsized_fn_params)]
+
+use pin_project::pin_project;
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct Struct<T: ?Sized> {
+ f: T,
+}
+
+#[pin_project(project_replace)] //~ ERROR E0277
+struct TupleStruct<T: ?Sized>(T);
+
+fn main() {}
--- /dev/null
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:6:8
+ |
+6 | struct Struct<T: ?Sized> {
+ | ^^^^^^^-^^^^^^^^^
+ | | |
+ | | this type parameter needs to be `std::marker::Sized`
+ | doesn't have a size known at compile-time
+ |
+note: required because it appears within the type `__StructProjectionOwned<T>`
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:6:8
+ |
+6 | struct Struct<T: ?Sized> {
+ | ^^^^^^
+ = note: the return type of a function must have a statically known size
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+6 - struct Struct<T: ?Sized> {
+6 + struct Struct<T> {
+ |
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/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 `std::marker::Sized`
+ |
+note: required because it appears within the type `Struct<T>`
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:6:8
+ |
+6 | struct Struct<T: ?Sized> {
+ | ^^^^^^
+note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
+ --> src/lib.rs
+ |
+ | impl<T> UnsafeOverwriteGuard<T> {
+ | ^ required by this bound in `UnsafeOverwriteGuard::<T>::new`
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+6 - struct Struct<T: ?Sized> {
+6 + struct Struct<T> {
+ |
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:7:5
+ |
+5 | #[pin_project(project_replace)] //~ ERROR E0277
+ | ------------------------------- required by a bound introduced by this call
+6 | struct Struct<T: ?Sized> {
+ | - this type parameter needs to be `std::marker::Sized`
+7 | f: T,
+ | ^ doesn't have a size known at compile-time
+ |
+note: required by a bound in `std::ptr::read`
+ --> $RUST/core/src/ptr/mod.rs
+ |
+ | pub const unsafe fn read<T>(src: *const T) -> T {
+ | ^ required by this bound in `std::ptr::read`
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+6 - struct Struct<T: ?Sized> {
+6 + struct Struct<T> {
+ |
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:11:8
+ |
+11 | struct TupleStruct<T: ?Sized>(T);
+ | ^^^^^^^^^^^^-^^^^^^^^^
+ | | |
+ | | this type parameter needs to be `std::marker::Sized`
+ | doesn't have a size known at compile-time
+ |
+note: required because it appears within the type `__TupleStructProjectionOwned<T>`
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:11:8
+ |
+11 | struct TupleStruct<T: ?Sized>(T);
+ | ^^^^^^^^^^^
+ = note: the return type of a function must have a statically known size
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+11 - struct TupleStruct<T: ?Sized>(T);
+11 + struct TupleStruct<T>(T);
+ |
+
+error[E0277]: the size for values of type `T` cannot be known at compilation time
+ --> tests/ui/pin_project/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 `std::marker::Sized`
+ |
+note: required because it appears within the type `TupleStruct<T>`
+ --> tests/ui/pin_project/project_replace_unsized_fn_params.rs:11:8
+ |
+11 | struct TupleStruct<T: ?Sized>(T);
+ | ^^^^^^^^^^^
+note: required by a bound in `UnsafeOverwriteGuard::<T>::new`
+ --> src/lib.rs
+ |
+ | impl<T> UnsafeOverwriteGuard<T> {
+ | ^ required by this bound in `UnsafeOverwriteGuard::<T>::new`
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: consider removing the `?Sized` bound to make the type parameter `Sized`
+ |
+11 - struct TupleStruct<T: ?Sized>(T);
+11 + struct TupleStruct<T>(T);
+ |
--- /dev/null
+use std::{marker::PhantomPinned, pin::Pin};
+
+use auxiliary_macro::remove_attr;
+use pin_project::pin_project;
+
+fn is_unpin<T: Unpin>() {}
+
+#[pin_project]
+#[remove_attr(field_all)]
+struct A {
+ #[pin]
+ f: PhantomPinned,
+}
+
+#[remove_attr(field_all)]
+#[pin_project]
+struct B {
+ #[pin]
+ f: PhantomPinned,
+}
+
+fn main() {
+ is_unpin::<A>();
+ is_unpin::<B>();
+
+ let mut x = A { f: PhantomPinned };
+ let x = Pin::new(&mut x).project();
+ let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+
+ let mut x = B { f: PhantomPinned };
+ let x = Pin::new(&mut x).project();
+ let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+}
--- /dev/null
+error[E0308]: mismatched types
+ --> tests/ui/pin_project/remove-attr-from-field.rs:28:38
+ |
+28 | let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+ | ----------------------- ^^^ expected struct `Pin`, found `&mut PhantomPinned`
+ | |
+ | expected due to this
+ |
+ = note: expected struct `Pin<&mut PhantomPinned>`
+ found mutable reference `&mut PhantomPinned`
+
+error[E0308]: mismatched types
+ --> tests/ui/pin_project/remove-attr-from-field.rs:32:38
+ |
+32 | let _: Pin<&mut PhantomPinned> = x.f; //~ ERROR E0308
+ | ----------------------- ^^^ expected struct `Pin`, found `&mut PhantomPinned`
+ | |
+ | expected due to this
+ |
+ = note: expected struct `Pin<&mut PhantomPinned>`
+ found mutable reference `&mut PhantomPinned`
--- /dev/null
+use std::{marker::PhantomPinned, pin::Pin};
+
+use auxiliary_macro::remove_attr;
+use pin_project::pin_project;
+
+fn is_unpin<T: Unpin>() {}
+
+#[pin_project]
+#[remove_attr(struct_all)]
+struct A {
+ #[pin] //~ ERROR cannot find attribute `pin` in this scope
+ f: PhantomPinned,
+}
+
+#[remove_attr(struct_all)]
+#[pin_project]
+struct B {
+ #[pin] //~ ERROR cannot find attribute `pin` in this scope
+ f: PhantomPinned,
+}
+
+#[pin_project] //~ ERROR has been removed
+#[remove_attr(struct_pin)]
+struct C {
+ f: PhantomPinned,
+}
+
+#[remove_attr(struct_pin)]
+#[pin_project] // Ok
+struct D {
+ f: PhantomPinned,
+}
+
+fn main() {
+ is_unpin::<A>(); //~ ERROR E0277
+ is_unpin::<B>(); //~ ERROR E0277
+ is_unpin::<D>(); // Ok
+
+ let mut x = A { f: PhantomPinned };
+ let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+
+ let mut x = B { f: PhantomPinned };
+ let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+
+ let mut x = D { f: PhantomPinned };
+ let _ = Pin::new(&mut x).project(); //~ Ok
+}
--- /dev/null
+error: #[pin_project] attribute has been removed
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:22:1
+ |
+22 | #[pin_project] //~ ERROR has been removed
+ | ^^^^^^^^^^^^^^
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: cannot find attribute `pin` in this scope
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:18:7
+ |
+18 | #[pin] //~ ERROR cannot find attribute `pin` in this scope
+ | ^^^
+
+error: cannot find attribute `pin` in this scope
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:11:7
+ |
+11 | #[pin] //~ ERROR cannot find attribute `pin` in this scope
+ | ^^^
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:35:5
+ |
+35 | is_unpin::<A>(); //~ ERROR E0277
+ | ^^^^^^^^^^^^^ within `A`, the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `A`
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:10:8
+ |
+10 | struct A {
+ | ^
+note: required by a bound in `is_unpin`
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:6:16
+ |
+6 | fn is_unpin<T: Unpin>() {}
+ | ^^^^^ required by this bound in `is_unpin`
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:36:5
+ |
+36 | is_unpin::<B>(); //~ ERROR E0277
+ | ^^^^^^^^^^^^^ within `B`, the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `B`
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:17:8
+ |
+17 | struct B {
+ | ^
+note: required by a bound in `is_unpin`
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:6:16
+ |
+6 | fn is_unpin<T: Unpin>() {}
+ | ^^^^^ required by this bound in `is_unpin`
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:40:22
+ |
+40 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+ | -------- ^^^^^^ within `A`, the trait `Unpin` is not implemented for `PhantomPinned`
+ | |
+ | required by a bound introduced by this call
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `A`
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:10:8
+ |
+10 | struct A {
+ | ^
+note: required by a bound in `Pin::<P>::new`
+ --> $RUST/core/src/pin.rs
+ |
+ | impl<P: Deref<Target: Unpin>> Pin<P> {
+ | ^^^^^ required by this bound in `Pin::<P>::new`
+
+error[E0599]: no method named `project` found for struct `Pin<&mut A>` in the current scope
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:40:30
+ |
+40 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+ | ^^^^^^^ method not found in `Pin<&mut A>`
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:43:22
+ |
+43 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+ | -------- ^^^^^^ within `B`, the trait `Unpin` is not implemented for `PhantomPinned`
+ | |
+ | required by a bound introduced by this call
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `B`
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:17:8
+ |
+17 | struct B {
+ | ^
+note: required by a bound in `Pin::<P>::new`
+ --> $RUST/core/src/pin.rs
+ |
+ | impl<P: Deref<Target: Unpin>> Pin<P> {
+ | ^^^^^ required by this bound in `Pin::<P>::new`
+
+error[E0599]: no method named `project` found for struct `Pin<&mut B>` in the current scope
+ --> tests/ui/pin_project/remove-attr-from-struct.rs:43:30
+ |
+43 | let _ = Pin::new(&mut x).project(); //~ ERROR E0277,E0599
+ | ^^^^^^^ method not found in `Pin<&mut B>`
--- /dev/null
+#![deny(renamed_and_removed_lints)]
+#![deny(safe_packed_borrows)] //~ ERROR has been renamed to `unaligned_references`
+#![allow(unaligned_references)]
+
+// 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 Packed {
+ f: u32,
+}
+
+#[repr(packed(2))]
+struct PackedN {
+ f: u32,
+}
+
+fn main() {
+ let a = Packed { f: 1 };
+ let _ = &a.f;
+
+ let b = PackedN { f: 1 };
+ let _ = &b.f;
+}
--- /dev/null
+error: lint `safe_packed_borrows` has been renamed to `unaligned_references`
+ --> tests/ui/pin_project/safe_packed_borrows.rs:2:9
+ |
+2 | #![deny(safe_packed_borrows)] //~ ERROR has been renamed to `unaligned_references`
+ | ^^^^^^^^^^^^^^^^^^^ help: use the new name: `unaligned_references`
+ |
+note: the lint level is defined here
+ --> tests/ui/pin_project/safe_packed_borrows.rs:1:9
+ |
+1 | #![deny(renamed_and_removed_lints)]
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^
--- /dev/null
+#![forbid(unaligned_references)]
+
+// 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 };
+ let _ = &a.f; //~ ERROR reference to packed field is unaligned
+
+ let b = PackedN { f: 1 };
+ let _ = &b.f; //~ ERROR reference to packed field is unaligned
+}
--- /dev/null
+error: reference to packed field is unaligned
+ --> tests/ui/pin_project/unaligned_references.rs:17:13
+ |
+17 | let _ = &a.f; //~ ERROR reference to packed field is unaligned
+ | ^^^^
+ |
+note: the lint level is defined here
+ --> tests/ui/pin_project/unaligned_references.rs:1:11
+ |
+1 | #![forbid(unaligned_references)]
+ | ^^^^^^^^^^^^^^^^^^^^
+ = 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 #82523 <https://github.com/rust-lang/rust/issues/82523>
+ = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+ = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
+
+error: reference to packed field is unaligned
+ --> tests/ui/pin_project/unaligned_references.rs:20:13
+ |
+20 | let _ = &b.f; //~ ERROR reference to packed field is unaligned
+ | ^^^^
+ |
+ = 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 #82523 <https://github.com/rust-lang/rust/issues/82523>
+ = note: fields of packed structs are not properly aligned, and creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
+ = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project]
+struct S {
+ #[pin]
+ f: u8,
+}
+
+impl Unpin for __S {} //~ ERROR E0412,E0321
+
+fn main() {}
--- /dev/null
+error[E0412]: cannot find type `__S` in this scope
+ --> tests/ui/pin_project/unpin_sneaky.rs:9:16
+ |
+9 | impl Unpin for __S {} //~ ERROR E0412,E0321
+ | ^^^ not found in this scope
--- /dev/null
+/// Only named projected types can be imported.
+/// See import_unnamed.rs for unnamed projected types.
+
+mod pub_ {
+ use pin_project::pin_project;
+
+ #[pin_project(project = DProj, project_ref = DProjRef)]
+ pub struct Default(());
+
+ #[pin_project(project = RProj, project_ref = RProjRef, project_replace = RProjOwn)]
+ pub struct Replace(());
+}
+pub mod pub_use {
+ #[rustfmt::skip]
+ pub use crate::pub_::DProj; //~ ERROR E0365
+ #[rustfmt::skip]
+ pub use crate::pub_::DProjRef; //~ ERROR E0365
+ #[rustfmt::skip]
+ pub use crate::pub_::RProj; //~ ERROR E0365
+ #[rustfmt::skip]
+ pub use crate::pub_::RProjOwn; //~ ERROR E0365
+ #[rustfmt::skip]
+ pub use crate::pub_::RProjRef; //~ ERROR E0365
+
+ // Confirm that the visibility of the original type is not changed.
+ pub use crate::pub_::{Default, Replace};
+}
+pub mod pub_use2 {
+ // Ok
+ #[allow(unused_imports)]
+ pub(crate) use crate::pub_::{DProj, DProjRef, RProj, RProjOwn, RProjRef};
+}
+
+mod pub_crate {
+ use pin_project::pin_project;
+
+ #[pin_project(project = DProj, project_ref = DProjRef)]
+ pub(crate) struct Default(());
+
+ #[pin_project(project = RProj, project_ref = RProjRef, project_replace = RProjOwn)]
+ pub(crate) struct Replace(());
+}
+pub mod pub_crate_use {
+ // Ok
+ #[allow(unused_imports)]
+ pub(crate) use crate::pub_crate::{DProj, DProjRef, RProj, RProjOwn, RProjRef};
+}
+
+fn main() {}
--- /dev/null
+error[E0365]: `DProj` is only public within the crate, and cannot be re-exported outside
+ --> tests/ui/pin_project/visibility.rs:15:13
+ |
+15 | pub use crate::pub_::DProj; //~ ERROR E0365
+ | ^^^^^^^^^^^^^^^^^^ re-export of crate public `DProj`
+ |
+ = note: consider declaring type or module `DProj` with `pub`
+
+error[E0365]: `DProjRef` is only public within the crate, and cannot be re-exported outside
+ --> tests/ui/pin_project/visibility.rs:17:13
+ |
+17 | pub use crate::pub_::DProjRef; //~ ERROR E0365
+ | ^^^^^^^^^^^^^^^^^^^^^ re-export of crate public `DProjRef`
+ |
+ = note: consider declaring type or module `DProjRef` with `pub`
+
+error[E0365]: `RProj` is only public within the crate, and cannot be re-exported outside
+ --> tests/ui/pin_project/visibility.rs:19:13
+ |
+19 | pub use crate::pub_::RProj; //~ ERROR E0365
+ | ^^^^^^^^^^^^^^^^^^ re-export of crate public `RProj`
+ |
+ = note: consider declaring type or module `RProj` with `pub`
+
+error[E0365]: `RProjOwn` is only public within the crate, and cannot be re-exported outside
+ --> tests/ui/pin_project/visibility.rs:21:13
+ |
+21 | pub use crate::pub_::RProjOwn; //~ ERROR E0365
+ | ^^^^^^^^^^^^^^^^^^^^^ re-export of crate public `RProjOwn`
+ |
+ = note: consider declaring type or module `RProjOwn` with `pub`
+
+error[E0365]: `RProjRef` is only public within the crate, and cannot be re-exported outside
+ --> tests/ui/pin_project/visibility.rs:23:13
+ |
+23 | pub use crate::pub_::RProjRef; //~ ERROR E0365
+ | ^^^^^^^^^^^^^^^^^^^^^ re-export of crate public `RProjRef`
+ |
+ = note: consider declaring type or module `RProjRef` with `pub`
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project(PinnedDrop)]
+struct Struct {
+ f: bool,
+}
+
+#[pinned_drop]
+impl PinnedDrop for Struct {
+ fn drop(mut self: Pin<&mut Self>) {
+ __drop_inner(__self);
+ }
+}
+
+fn main() {}
--- /dev/null
+error[E0061]: this function takes 0 arguments but 1 argument was supplied
+ --> tests/ui/pinned_drop/call-drop-inner.rs:13:9
+ |
+13 | __drop_inner(__self);
+ | ^^^^^^^^^^^^ ------ argument of type `Pin<&mut Struct>` unexpected
+ |
+note: function defined here
+ --> tests/ui/pinned_drop/call-drop-inner.rs:10:1
+ |
+10 | #[pinned_drop]
+ | ^^^^^^^^^^^^^^
+ = note: this error originates in the attribute macro `pinned_drop` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: remove the extra argument
+ |
+13 | __drop_inner();
+ | ~~~~~~~~~~~~~~
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+// In `Drop` impl, the implementor must specify the same requirement as type definition.
+
+struct DropImpl<T> {
+ f: T,
+}
+
+impl<T: Unpin> Drop for DropImpl<T> {
+ //~^ ERROR E0367
+ fn drop(&mut self) {}
+}
+
+#[pin_project(PinnedDrop)] //~ ERROR E0277
+struct PinnedDropImpl<T> {
+ #[pin]
+ f: T,
+}
+
+#[pinned_drop]
+impl<T: Unpin> PinnedDrop for PinnedDropImpl<T> {
+ fn drop(self: Pin<&mut Self>) {}
+}
+
+fn main() {}
--- /dev/null
+error[E0367]: `Drop` impl requires `T: Unpin` but the struct it is implemented for does not
+ --> tests/ui/pinned_drop/conditional-drop-impl.rs:11:9
+ |
+11 | impl<T: Unpin> Drop for DropImpl<T> {
+ | ^^^^^
+ |
+note: the implementor must specify the same requirement
+ --> tests/ui/pinned_drop/conditional-drop-impl.rs:7:1
+ |
+7 | struct DropImpl<T> {
+ | ^^^^^^^^^^^^^^^^^^
+
+error[E0277]: `T` cannot be unpinned
+ --> tests/ui/pinned_drop/conditional-drop-impl.rs:16:15
+ |
+16 | #[pin_project(PinnedDrop)] //~ ERROR E0277
+ | ^^^^^^^^^^ the trait `Unpin` is not implemented for `T`
+ |
+ = note: consider using `Box::pin`
+note: required because of the requirements on the impl of `PinnedDrop` for `PinnedDropImpl<T>`
+ --> tests/ui/pinned_drop/conditional-drop-impl.rs:23:16
+ |
+23 | impl<T: Unpin> PinnedDrop for PinnedDropImpl<T> {
+ | ^^^^^^^^^^ ^^^^^^^^^^^^^^^^^
+help: consider restricting type parameter `T`
+ |
+17 | struct PinnedDropImpl<T: std::marker::Unpin> {
+ | ++++++++++++++++++++
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(PinnedDrop)] //~ ERROR E0277
+struct Struct {
+ #[pin]
+ f: u8,
+}
+
+fn main() {}
--- /dev/null
+error[E0277]: the trait bound `Struct: PinnedDrop` is not satisfied
+ --> tests/ui/pinned_drop/forget-pinned-drop-impl.rs:3:15
+ |
+3 | #[pin_project(PinnedDrop)] //~ ERROR E0277
+ | ^^^^^^^^^^ the trait `PinnedDrop` is not implemented for `Struct`
--- /dev/null
+// by-ref binding `ref (mut) self` and sub-patterns `@` are not allowed in receivers (rejected by rustc).
+
+use std::pin::Pin;
+
+struct S {}
+
+impl S {
+ fn take_ref_self(ref self: Pin<&mut Self>) {} //~ ERROR expected identifier, found keyword `self`
+ fn take_ref_mut_self(ref mut self: Pin<&mut Self>) {} //~ ERROR expected identifier, found keyword `self`
+
+ fn self_subpat(self @ S {}: Self) {} //~ ERROR expected one of `)`, `,`, or `:`, found `@`
+}
+
+fn main() {}
--- /dev/null
+error: expected identifier, found keyword `self`
+ --> tests/ui/pinned_drop/invalid-self.rs:8:26
+ |
+8 | fn take_ref_self(ref self: Pin<&mut Self>) {} //~ ERROR expected identifier, found keyword `self`
+ | ^^^^ expected identifier, found keyword
+
+error: expected identifier, found keyword `self`
+ --> tests/ui/pinned_drop/invalid-self.rs:9:34
+ |
+9 | fn take_ref_mut_self(ref mut self: Pin<&mut Self>) {} //~ ERROR expected identifier, found keyword `self`
+ | ^^^^ expected identifier, found keyword
+
+error: expected parameter name, found `@`
+ --> tests/ui/pinned_drop/invalid-self.rs:11:25
+ |
+11 | fn self_subpat(self @ S {}: Self) {} //~ ERROR expected one of `)`, `,`, or `:`, found `@`
+ | ^ expected parameter name
+
+error: expected one of `)`, `,`, or `:`, found `@`
+ --> tests/ui/pinned_drop/invalid-self.rs:11:25
+ |
+11 | fn self_subpat(self @ S {}: Self) {} //~ ERROR expected one of `)`, `,`, or `:`, found `@`
+ | -^ expected one of `)`, `,`, or `:`
+ | |
+ | help: missing `,`
--- /dev/null
+mod argument {
+ use std::pin::Pin;
+
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ struct UnexpectedArg1(());
+
+ #[pinned_drop(foo)] //~ ERROR unexpected token
+ impl PinnedDrop for UnexpectedArg1 {
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct UnexpectedArg2(());
+
+ #[pinned_drop()] // Ok
+ impl PinnedDrop for UnexpectedArg2 {
+ fn drop(self: Pin<&mut Self>) {}
+ }
+}
+
+mod attribute {
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ struct Duplicate(());
+
+ #[pinned_drop]
+ #[pinned_drop] //~ ERROR duplicate #[pinned_drop] attribute
+ impl PinnedDrop for Duplicate {
+ fn drop(self: Pin<&mut Self>) {}
+ }
+}
+
+mod item {
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ struct TraitImpl(());
+
+ #[pinned_drop]
+ impl Drop for TraitImpl {} //~ ERROR may only be used on implementation for the `PinnedDrop` trait
+
+ #[pin_project(PinnedDrop)]
+ struct InherentImpl(());
+
+ #[pinned_drop]
+ impl InherentImpl {} //~ ERROR may only be used on implementation for the `PinnedDrop` trait
+
+ #[pinned_drop]
+ fn func(_: Pin<&mut ()>) {} //~ ERROR expected `impl`
+}
+
+mod unsafety {
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ struct Impl(());
+
+ #[pinned_drop]
+ unsafe impl PinnedDrop for Impl {
+ //~^ ERROR implementing the trait `PinnedDrop` is not unsafe
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct Method(());
+
+ #[pinned_drop]
+ impl PinnedDrop for Method {
+ unsafe fn drop(self: Pin<&mut Self>) {} //~ ERROR implementing the method `drop` is not unsafe
+ }
+}
+
+mod assoc_item {
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ struct Empty(());
+
+ #[pinned_drop]
+ impl PinnedDrop for Empty {} //~ ERROR not all trait items implemented, missing: `drop`
+
+ #[pin_project(PinnedDrop)]
+ struct Const1(());
+
+ #[pinned_drop]
+ impl PinnedDrop for Const1 {
+ const A: u8 = 0; //~ ERROR const `A` is not a member of trait `PinnedDrop`
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct Const2(());
+
+ #[pinned_drop]
+ impl PinnedDrop for Const2 {
+ fn drop(self: Pin<&mut Self>) {}
+ const A: u8 = 0; //~ ERROR const `A` is not a member of trait `PinnedDrop`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct Type1(());
+
+ #[pinned_drop]
+ impl PinnedDrop for Type1 {
+ type A = u8; //~ ERROR type `A` is not a member of trait `PinnedDrop`
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct Type2(());
+
+ #[pinned_drop]
+ impl PinnedDrop for Type2 {
+ fn drop(self: Pin<&mut Self>) {}
+ type A = u8; //~ ERROR type `A` is not a member of trait `PinnedDrop`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct Duplicate(());
+
+ #[pinned_drop]
+ impl PinnedDrop for Duplicate {
+ fn drop(self: Pin<&mut Self>) {}
+ fn drop(self: Pin<&mut Self>) {} //~ ERROR duplicate definitions with name `drop`
+ }
+}
+
+mod method {
+ use std::pin::Pin;
+
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ struct RetUnit(());
+
+ #[pinned_drop]
+ impl PinnedDrop for RetUnit {
+ fn drop(self: Pin<&mut Self>) -> () {} // Ok
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct RetTy(());
+
+ #[pinned_drop]
+ impl PinnedDrop for RetTy {
+ fn drop(self: Pin<&mut Self>) -> Self {} //~ ERROR method `drop` must return the unit type
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct NoArg(());
+
+ #[pinned_drop]
+ impl PinnedDrop for NoArg {
+ fn drop() {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct MultiArg(());
+
+ #[pinned_drop]
+ impl PinnedDrop for MultiArg {
+ fn drop(self: Pin<&mut Self>, _: ()) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct InvalidArg1(());
+
+ #[pinned_drop]
+ impl PinnedDrop for InvalidArg1 {
+ fn drop(&mut self) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct InvalidArg2(());
+
+ #[pinned_drop]
+ impl PinnedDrop for InvalidArg2 {
+ fn drop(_: Pin<&mut Self>) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct InvalidArg3(());
+
+ #[pinned_drop]
+ impl PinnedDrop for InvalidArg3 {
+ fn drop(self: Pin<&Self>) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct InvalidArg4(());
+
+ #[pinned_drop]
+ impl PinnedDrop for InvalidArg4 {
+ fn drop(self: Pin<&mut ()>) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ }
+
+ #[pin_project(PinnedDrop)]
+ struct InvalidName(());
+
+ #[pinned_drop]
+ impl PinnedDrop for InvalidName {
+ fn pinned_drop(self: Pin<&mut Self>) {} //~ ERROR method `pinned_drop` is not a member of trait `PinnedDrop
+ }
+}
+
+mod self_ty {
+ use pin_project::pinned_drop;
+
+ #[pinned_drop]
+ impl PinnedDrop for () {
+ //~^ ERROR implementing the trait `PinnedDrop` on this type is unsupported
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for &mut A {
+ //~^ ERROR implementing the trait `PinnedDrop` on this type is unsupported
+ fn drop(self: Pin<&mut Self>) {}
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for [A] {
+ //~^ ERROR implementing the trait `PinnedDrop` on this type is unsupported
+ fn drop(self: Pin<&mut Self>) {}
+ }
+}
+
+fn main() {}
--- /dev/null
+error: unexpected token: `foo`
+ --> tests/ui/pinned_drop/invalid.rs:9:19
+ |
+9 | #[pinned_drop(foo)] //~ ERROR unexpected token
+ | ^^^
+
+error: duplicate #[pinned_drop] attribute
+ --> tests/ui/pinned_drop/invalid.rs:30:5
+ |
+30 | #[pinned_drop] //~ ERROR duplicate #[pinned_drop] attribute
+ | ^^^^^^^^^^^^^^
+
+error: #[pinned_drop] may only be used on implementation for the `PinnedDrop` trait
+ --> tests/ui/pinned_drop/invalid.rs:43:10
+ |
+43 | impl Drop for TraitImpl {} //~ ERROR may only be used on implementation for the `PinnedDrop` trait
+ | ^^^^
+
+error: #[pinned_drop] may only be used on implementation for the `PinnedDrop` trait
+ --> tests/ui/pinned_drop/invalid.rs:49:10
+ |
+49 | impl InherentImpl {} //~ ERROR may only be used on implementation for the `PinnedDrop` trait
+ | ^^^^^^^^^^^^
+
+error: expected `impl`
+ --> tests/ui/pinned_drop/invalid.rs:52:5
+ |
+52 | fn func(_: Pin<&mut ()>) {} //~ ERROR expected `impl`
+ | ^^
+
+error: implementing the trait `PinnedDrop` is not unsafe
+ --> tests/ui/pinned_drop/invalid.rs:62:5
+ |
+62 | unsafe impl PinnedDrop for Impl {
+ | ^^^^^^
+
+error: implementing the method `drop` is not unsafe
+ --> tests/ui/pinned_drop/invalid.rs:72:9
+ |
+72 | unsafe fn drop(self: Pin<&mut Self>) {} //~ ERROR implementing the method `drop` is not unsafe
+ | ^^^^^^
+
+error: not all trait items implemented, missing: `drop`
+ --> tests/ui/pinned_drop/invalid.rs:83:5
+ |
+83 | impl PinnedDrop for Empty {} //~ ERROR not all trait items implemented, missing: `drop`
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: const `A` is not a member of trait `PinnedDrop`
+ --> tests/ui/pinned_drop/invalid.rs:90:9
+ |
+90 | const A: u8 = 0; //~ ERROR const `A` is not a member of trait `PinnedDrop`
+ | ^^^^^^^^^^^^^^^^
+
+error: const `A` is not a member of trait `PinnedDrop`
+ --> tests/ui/pinned_drop/invalid.rs:100:9
+ |
+100 | const A: u8 = 0; //~ ERROR const `A` is not a member of trait `PinnedDrop`
+ | ^^^^^^^^^^^^^^^^
+
+error: type `A` is not a member of trait `PinnedDrop`
+ --> tests/ui/pinned_drop/invalid.rs:108:9
+ |
+108 | type A = u8; //~ ERROR type `A` is not a member of trait `PinnedDrop`
+ | ^^^^^^^^^^^^
+
+error: type `A` is not a member of trait `PinnedDrop`
+ --> tests/ui/pinned_drop/invalid.rs:118:9
+ |
+118 | type A = u8; //~ ERROR type `A` is not a member of trait `PinnedDrop`
+ | ^^^^^^^^^^^^
+
+error: duplicate definitions with name `drop`
+ --> tests/ui/pinned_drop/invalid.rs:127:9
+ |
+127 | fn drop(self: Pin<&mut Self>) {} //~ ERROR duplicate definitions with name `drop`
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: method `drop` must return the unit type
+ --> tests/ui/pinned_drop/invalid.rs:149:42
+ |
+149 | fn drop(self: Pin<&mut Self>) -> Self {} //~ ERROR method `drop` must return the unit type
+ | ^^^^
+
+error: method `drop` must take an argument `self: Pin<&mut Self>`
+ --> tests/ui/pinned_drop/invalid.rs:157:16
+ |
+157 | fn drop() {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ | ^^
+
+error: method `drop` must take an argument `self: Pin<&mut Self>`
+ --> tests/ui/pinned_drop/invalid.rs:165:17
+ |
+165 | fn drop(self: Pin<&mut Self>, _: ()) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: method `drop` must take an argument `self: Pin<&mut Self>`
+ --> tests/ui/pinned_drop/invalid.rs:173:17
+ |
+173 | fn drop(&mut self) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ | ^^^^^^^^^
+
+error: method `drop` must take an argument `self: Pin<&mut Self>`
+ --> tests/ui/pinned_drop/invalid.rs:181:17
+ |
+181 | fn drop(_: Pin<&mut Self>) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ | ^^^^^^^^^^^^^^^^^
+
+error: method `drop` must take an argument `self: Pin<&mut Self>`
+ --> tests/ui/pinned_drop/invalid.rs:189:17
+ |
+189 | fn drop(self: Pin<&Self>) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ | ^^^^^^^^^^^^^^^^
+
+error: method `drop` must take an argument `self: Pin<&mut Self>`
+ --> tests/ui/pinned_drop/invalid.rs:197:17
+ |
+197 | fn drop(self: Pin<&mut ()>) {} //~ ERROR method `drop` must take an argument `self: Pin<&mut Self>`
+ | ^^^^^^^^^^^^^^^^^^
+
+error: method `pinned_drop` is not a member of trait `PinnedDrop
+ --> tests/ui/pinned_drop/invalid.rs:205:12
+ |
+205 | fn pinned_drop(self: Pin<&mut Self>) {} //~ ERROR method `pinned_drop` is not a member of trait `PinnedDrop
+ | ^^^^^^^^^^^
+
+error: implementing the trait `PinnedDrop` on this type is unsupported
+ --> tests/ui/pinned_drop/invalid.rs:213:25
+ |
+213 | impl PinnedDrop for () {
+ | ^^
+
+error: implementing the trait `PinnedDrop` on this type is unsupported
+ --> tests/ui/pinned_drop/invalid.rs:219:25
+ |
+219 | impl PinnedDrop for &mut A {
+ | ^^^^^^
+
+error: implementing the trait `PinnedDrop` on this type is unsupported
+ --> tests/ui/pinned_drop/invalid.rs:225:25
+ |
+225 | impl PinnedDrop for [A] {
+ | ^^^
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project]
+struct S {
+ #[pin]
+ f: u8,
+}
+
+#[pinned_drop]
+impl PinnedDrop for S {
+ //~^ ERROR E0119
+ fn drop(self: Pin<&mut Self>) {}
+}
+
+fn main() {}
--- /dev/null
+error[E0119]: conflicting implementations of trait `_::_pin_project::__private::PinnedDrop` for type `S`
+ --> tests/ui/pinned_drop/pinned-drop-no-attr-arg.rs:12:1
+ |
+5 | #[pin_project]
+ | -------------- first implementation here
+...
+12 | impl PinnedDrop for S {
+ | ^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `S`
--- /dev/null
+pub mod self_in_macro_def {
+ use std::pin::Pin;
+
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ pub struct S {
+ f: (),
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for S {
+ fn drop(self: Pin<&mut Self>) {
+ macro_rules! t {
+ () => {{
+ let _ = self; //~ ERROR E0434
+
+ fn f(self: ()) {} //~ ERROR `self` parameter is only allowed in associated functions
+ }};
+ }
+ t!();
+ }
+ }
+}
+
+pub mod self_span {
+ use std::pin::Pin;
+
+ use pin_project::{pin_project, pinned_drop};
+
+ #[pin_project(PinnedDrop)]
+ pub struct S {
+ f: (),
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for S {
+ fn drop(self: Pin<&mut Self>) {
+ let _: () = self; //~ ERROR E0308
+ let _: Self = Self; //~ ERROR E0423
+ }
+ }
+
+ #[pin_project(PinnedDrop)]
+ pub enum E {
+ V { f: () },
+ }
+
+ #[pinned_drop]
+ impl PinnedDrop for E {
+ fn drop(self: Pin<&mut Self>) {
+ let _: () = self; //~ ERROR E0308
+ let _: Self = Self::V; //~ ERROR E0533
+ }
+ }
+}
+
+fn main() {}
--- /dev/null
+error: `self` parameter is only allowed in associated functions
+ --> tests/ui/pinned_drop/self.rs:18:26
+ |
+18 | fn f(self: ()) {} //~ ERROR `self` parameter is only allowed in associated functions
+ | ^^^^ not semantically valid as function parameter
+...
+21 | t!();
+ | ---- in this macro invocation
+ |
+ = note: associated functions are those in `impl` or `trait` definitions
+ = note: this error originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0434]: can't capture dynamic environment in a fn item
+ --> tests/ui/pinned_drop/self.rs:16:29
+ |
+16 | let _ = self; //~ ERROR E0434
+ | ^^^^
+...
+21 | t!();
+ | ---- in this macro invocation
+ |
+ = help: use the `|| { ... }` closure form instead
+ = note: this error originates in the macro `t` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0423]: expected value, found struct `S`
+ --> tests/ui/pinned_drop/self.rs:40:27
+ |
+32 | / pub struct S {
+33 | | f: (),
+34 | | }
+ | |_____- `S` defined here
+...
+40 | let _: Self = Self; //~ ERROR E0423
+ | ^^^^ help: use struct literal syntax instead: `S { f: val }`
+
+error[E0308]: mismatched types
+ --> tests/ui/pinned_drop/self.rs:39:25
+ |
+39 | let _: () = self; //~ ERROR E0308
+ | -- ^^^^ expected `()`, found struct `Pin`
+ | |
+ | expected due to this
+ |
+ = note: expected unit type `()`
+ found struct `Pin<&mut self_span::S>`
+
+error[E0308]: mismatched types
+ --> tests/ui/pinned_drop/self.rs:52:25
+ |
+52 | let _: () = self; //~ ERROR E0308
+ | -- ^^^^ expected `()`, found struct `Pin`
+ | |
+ | expected due to this
+ |
+ = note: expected unit type `()`
+ found struct `Pin<&mut E>`
+
+error[E0533]: expected unit struct, unit variant or constant, found struct variant `E::V`
+ --> tests/ui/pinned_drop/self.rs:53:27
+ |
+53 | let _: Self = Self::V; //~ ERROR E0533
+ | ^^^^^^^
--- /dev/null
+use std::pin::Pin;
+
+use pin_project::{pin_project, pinned_drop};
+
+#[pin_project(PinnedDrop)]
+struct S {
+ #[pin]
+ f: u8,
+}
+
+#[pinned_drop]
+impl PinnedDrop for S {
+ fn drop(self: Pin<&mut Self>) {
+ self.project().f.get_unchecked_mut(); //~ ERROR call to unsafe function is unsafe and requires unsafe function or block [E0133]
+ }
+}
+
+fn main() {}
--- /dev/null
+error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
+ --> tests/ui/pinned_drop/unsafe-call.rs:14:9
+ |
+14 | self.project().f.get_unchecked_mut(); //~ ERROR call to unsafe function is unsafe and requires unsafe function or block [E0133]
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
+ |
+ = note: consult the function's documentation for information on how to avoid undefined behavior
--- /dev/null
+use pin_project::pin_project;
+
+#[pin_project(UnsafeUnpin)] //~ ERROR E0119
+struct Foo<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+impl<T, U> Unpin for Foo<T, U> where T: Unpin {}
+
+#[pin_project(UnsafeUnpin)] //~ ERROR E0119
+struct Bar<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+impl<T, U> Unpin for Bar<T, U> {}
+
+#[pin_project(UnsafeUnpin)] //~ ERROR E0119
+struct Baz<T, U> {
+ #[pin]
+ f1: T,
+ f2: U,
+}
+
+impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {}
+
+fn main() {}
--- /dev/null
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Foo<_, _>`
+ --> tests/ui/unsafe_unpin/conflict-unpin.rs:3:15
+ |
+3 | #[pin_project(UnsafeUnpin)] //~ ERROR E0119
+ | ^^^^^^^^^^^ conflicting implementation for `Foo<_, _>`
+...
+10 | impl<T, U> Unpin for Foo<T, U> where T: Unpin {}
+ | ------------------------------ first implementation here
+ |
+ = note: upstream crates may add a new impl of trait `_::_pin_project::UnsafeUnpin` for type `_::_pin_project::__private::Wrapper<'_, Foo<_, _>>` in future versions
+
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Bar<_, _>`
+ --> tests/ui/unsafe_unpin/conflict-unpin.rs:12:15
+ |
+12 | #[pin_project(UnsafeUnpin)] //~ ERROR E0119
+ | ^^^^^^^^^^^ conflicting implementation for `Bar<_, _>`
+...
+19 | impl<T, U> Unpin for Bar<T, U> {}
+ | ------------------------------ first implementation here
+ |
+ = note: upstream crates may add a new impl of trait `_::_pin_project::UnsafeUnpin` for type `_::_pin_project::__private::Wrapper<'_, Bar<_, _>>` in future versions
+
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Baz<_, _>`
+ --> tests/ui/unsafe_unpin/conflict-unpin.rs:21:15
+ |
+21 | #[pin_project(UnsafeUnpin)] //~ ERROR E0119
+ | ^^^^^^^^^^^ conflicting implementation for `Baz<_, _>`
+...
+28 | impl<T: Unpin, U: Unpin> Unpin for Baz<T, U> {}
+ | -------------------------------------------- first implementation here
+ |
+ = note: upstream crates may add a new impl of trait `_::_pin_project::UnsafeUnpin` for type `_::_pin_project::__private::Wrapper<'_, Baz<_, _>>` in future versions
--- /dev/null
+# UI tests for unstable features
+
+These tests check how the guarantees and features provided by pin-project
+interact with unstable language features.
+
+The names of the files contained in this directory need to begin with the name
+of the feature.
--- /dev/null
+// Note: If you change this test, change 'marker_trait_attr.rs' at the same time.
+
+use std::marker::PhantomPinned;
+
+use pin_project::pin_project;
+
+#[pin_project] //~ ERROR E0119
+struct Struct<T> {
+ #[pin]
+ f: T,
+}
+
+// unsound Unpin impl
+impl<T> Unpin for Struct<T> {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+ is_unpin::<Struct<PhantomPinned>>()
+}
--- /dev/null
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Struct<_>`
+ --> tests/ui/unstable-features/marker_trait_attr-feature-gate.rs:7:1
+ |
+7 | #[pin_project] //~ ERROR E0119
+ | ^^^^^^^^^^^^^^ conflicting implementation for `Struct<_>`
+...
+14 | impl<T> Unpin for Struct<T> {}
+ | --------------------------- first implementation here
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+// Note: If you change this test, change 'marker_trait_attr-feature-gate.rs' at the same time.
+
+// marker_trait_attr
+// Tracking issue: https://github.com/rust-lang/rust/issues/29864
+#![feature(marker_trait_attr)]
+
+// See https://github.com/taiki-e/pin-project/issues/105#issuecomment-535355974
+
+use std::marker::PhantomPinned;
+
+use pin_project::pin_project;
+
+#[pin_project] //~ ERROR E0119
+struct Struct<T> {
+ #[pin]
+ f: T,
+}
+
+// unsound Unpin impl
+impl<T> Unpin for Struct<T> {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+ is_unpin::<Struct<PhantomPinned>>()
+}
--- /dev/null
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Struct<_>`
+ --> tests/ui/unstable-features/marker_trait_attr.rs:13:1
+ |
+13 | #[pin_project] //~ ERROR E0119
+ | ^^^^^^^^^^^^^^ conflicting implementation for `Struct<_>`
+...
+20 | impl<T> Unpin for Struct<T> {}
+ | --------------------------- first implementation here
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+#![feature(negative_impls)]
+#![deny(suspicious_auto_trait_impls)]
+
+// https://rust-lang.zulipchat.com/#narrow/stream/213817-t-lang/topic/design.20meeting.3A.20backlog.20bonanza/near/269471299
+// https://github.com/taiki-e/pin-project/issues/340
+
+#[pin_project::pin_project]
+struct Foo<Pinned, Unpinned> {
+ #[pin]
+ pinned: Pinned,
+
+ unpinned: Unpinned,
+}
+
+struct MyPhantomPinned {}
+impl !Unpin for MyPhantomPinned {}
+impl Unpin for Foo<MyPhantomPinned, ()> {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+ is_unpin::<Foo<MyPhantomPinned, ()>>()
+}
--- /dev/null
+error: cross-crate traits with a default impl, like `Unpin`, should not be specialized
+ --> tests/ui/unstable-features/negative_impls.rs:17:1
+ |
+17 | impl Unpin for Foo<MyPhantomPinned, ()> {}
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ |
+note: the lint level is defined here
+ --> tests/ui/unstable-features/negative_impls.rs:2:9
+ |
+2 | #![deny(suspicious_auto_trait_impls)]
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ = warning: this will change its meaning in a future release!
+ = note: for more information, see issue #93367 <https://github.com/rust-lang/rust/issues/93367>
+ = note: `MyPhantomPinned` is not a generic parameter
+note: try using the same sequence of generic parameters as the struct definition
+ --> tests/ui/unstable-features/negative_impls.rs:8:1
+ |
+8 | struct Foo<Pinned, Unpinned> {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
--- /dev/null
+// Note: If you change this test, change 'overlapping_marker_traits.rs' at the same time.
+
+use std::marker::PhantomPinned;
+
+use pin_project::pin_project;
+
+#[pin_project] //~ ERROR E0119
+struct Struct<T> {
+ #[pin]
+ f: T,
+}
+
+// unsound Unpin impl
+impl<T> Unpin for Struct<T> {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+ is_unpin::<Struct<PhantomPinned>>()
+}
--- /dev/null
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Struct<_>`
+ --> tests/ui/unstable-features/overlapping_marker_traits-feature-gate.rs:7:1
+ |
+7 | #[pin_project] //~ ERROR E0119
+ | ^^^^^^^^^^^^^^ conflicting implementation for `Struct<_>`
+...
+14 | impl<T> Unpin for Struct<T> {}
+ | --------------------------- first implementation here
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+// Note: If you change this test, change 'overlapping_marker_traits-feature-gate.rs' at the same time.
+
+// This feature could break the guarantee for Unpin provided by pin-project,
+// but was removed in https://github.com/rust-lang/rust/pull/68544 (nightly-2020-02-06).
+// Refs:
+// - https://github.com/rust-lang/rust/issues/29864#issuecomment-515780867
+// - https://github.com/taiki-e/pin-project/issues/105
+
+// overlapping_marker_traits
+// Tracking issue: https://github.com/rust-lang/rust/issues/29864
+#![feature(overlapping_marker_traits)]
+
+use std::marker::PhantomPinned;
+
+use pin_project::pin_project;
+
+#[pin_project]
+struct Struct<T> {
+ #[pin]
+ f: T,
+}
+
+// unsound Unpin impl
+impl<T> Unpin for Struct<T> {}
+
+fn is_unpin<T: Unpin>() {}
+
+fn main() {
+ is_unpin::<Struct<PhantomPinned>>()
+}
--- /dev/null
+error[E0557]: feature has been removed
+ --> tests/ui/unstable-features/overlapping_marker_traits.rs:11:12
+ |
+11 | #![feature(overlapping_marker_traits)]
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
+ |
+ = note: removed in favor of `#![feature(marker_trait_attr)]`
+
+error[E0119]: conflicting implementations of trait `std::marker::Unpin` for type `Struct<_>`
+ --> tests/ui/unstable-features/overlapping_marker_traits.rs:17:1
+ |
+17 | #[pin_project]
+ | ^^^^^^^^^^^^^^ conflicting implementation for `Struct<_>`
+...
+24 | impl<T> Unpin for Struct<T> {}
+ | --------------------------- first implementation here
+ |
+ = note: this error originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
--- /dev/null
+// Note: If you change this test, change 'trivial_bounds.rs' at the same time.
+
+mod phantom_pinned {
+ use std::marker::{PhantomData, PhantomPinned};
+
+ struct A(PhantomPinned);
+
+ impl Unpin for A where PhantomPinned: Unpin {} //~ ERROR E0277
+
+ struct Wrapper<T>(T);
+
+ impl<T> Unpin for Wrapper<T> where T: Unpin {}
+
+ struct B(PhantomPinned);
+
+ impl Unpin for B where Wrapper<PhantomPinned>: Unpin {} //~ ERROR E0277
+
+ struct WrapperWithLifetime<'a, T>(PhantomData<&'a ()>, T);
+
+ impl<T> Unpin for WrapperWithLifetime<'_, T> where T: Unpin {}
+
+ struct C(PhantomPinned);
+
+ impl<'a> Unpin for C where WrapperWithLifetime<'a, PhantomPinned>: Unpin {} // Ok
+}
+
+mod inner {
+ use std::marker::{PhantomData, PhantomPinned};
+
+ struct Inner(PhantomPinned);
+
+ struct A(Inner);
+
+ impl Unpin for A where Inner: Unpin {} //~ ERROR E0277
+
+ struct Wrapper<T>(T);
+
+ impl<T> Unpin for Wrapper<T> where T: Unpin {}
+
+ struct B(Inner);
+
+ impl Unpin for B where Wrapper<Inner>: Unpin {} //~ ERROR E0277
+
+ struct WrapperWithLifetime<'a, T>(PhantomData<&'a ()>, T);
+
+ impl<T> Unpin for WrapperWithLifetime<'_, T> where T: Unpin {}
+
+ struct C(Inner);
+
+ impl<'a> Unpin for C where WrapperWithLifetime<'a, Inner>: Unpin {} // Ok
+}
+
+fn main() {}
--- /dev/null
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:8:28
+ |
+8 | impl Unpin for A where PhantomPinned: Unpin {} //~ ERROR E0277
+ | ^^^^^^^^^^^^^^^^^^^^ the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+ = help: see issue #48214
+ = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:16:28
+ |
+16 | impl Unpin for B where Wrapper<PhantomPinned>: Unpin {} //~ ERROR E0277
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because of the requirements on the impl of `Unpin` for `phantom_pinned::Wrapper<PhantomPinned>`
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:12:13
+ |
+12 | impl<T> Unpin for Wrapper<T> where T: Unpin {}
+ | ^^^^^ ^^^^^^^^^^
+ = help: see issue #48214
+ = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:34:28
+ |
+34 | impl Unpin for A where Inner: Unpin {} //~ ERROR E0277
+ | ^^^^^^^^^^^^ within `Inner`, the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `Inner`
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:30:12
+ |
+30 | struct Inner(PhantomPinned);
+ | ^^^^^
+ = help: see issue #48214
+ = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
+
+error[E0277]: `PhantomPinned` cannot be unpinned
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:42:28
+ |
+42 | impl Unpin for B where Wrapper<Inner>: Unpin {} //~ ERROR E0277
+ | ^^^^^^^^^^^^^^^^^^^^^ within `Inner`, the trait `Unpin` is not implemented for `PhantomPinned`
+ |
+ = note: consider using `Box::pin`
+note: required because it appears within the type `Inner`
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:30:12
+ |
+30 | struct Inner(PhantomPinned);
+ | ^^^^^
+note: required because of the requirements on the impl of `Unpin` for `inner::Wrapper<Inner>`
+ --> tests/ui/unstable-features/trivial_bounds-feature-gate.rs:38:13
+ |
+38 | impl<T> Unpin for Wrapper<T> where T: Unpin {}
+ | ^^^^^ ^^^^^^^^^^
+ = help: see issue #48214
+ = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
--- /dev/null
+// Note: If you change this test, change 'trivial_bounds-feature-gate.rs' at the same time.
+
+// trivial_bounds
+// Tracking issue: https://github.com/rust-lang/rust/issues/48214
+#![feature(trivial_bounds)]
+#![deny(trivial_bounds)]
+
+use std::marker::{PhantomData, PhantomPinned};
+
+fn inner() {
+ struct Inner(PhantomPinned);
+
+ struct A(PhantomPinned);
+
+ impl Unpin for A where PhantomPinned: Unpin {} //~ ERROR Unpin does not depend on any type or lifetime parameters
+
+ struct B(Inner);
+
+ impl Unpin for B where Inner: Unpin {} //~ ERROR Unpin does not depend on any type or lifetime parameters
+
+ struct Wrapper<T>(T);
+
+ impl<T> Unpin for Wrapper<T> where T: Unpin {}
+
+ struct C(Inner);
+
+ impl Unpin for C where Wrapper<Inner>: Unpin {} //~ ERROR Unpin does not depend on any type or lifetime parameters
+
+ struct WrapperWithLifetime<'a, T>(PhantomData<&'a ()>, T);
+
+ impl<T> Unpin for WrapperWithLifetime<'_, T> where T: Unpin {}
+
+ struct D(Inner);
+
+ impl<'a> Unpin for D where WrapperWithLifetime<'a, Inner>: Unpin {} // Ok
+}
+
+fn main() {}
--- /dev/null
+error: trait bound PhantomPinned: Unpin does not depend on any type or lifetime parameters
+ --> tests/ui/unstable-features/trivial_bounds.rs:15:43
+ |
+15 | impl Unpin for A where PhantomPinned: Unpin {} //~ ERROR Unpin does not depend on any type or lifetime parameters
+ | ^^^^^
+ |
+note: the lint level is defined here
+ --> tests/ui/unstable-features/trivial_bounds.rs:6:9
+ |
+6 | #![deny(trivial_bounds)]
+ | ^^^^^^^^^^^^^^
+
+error: trait bound Inner: Unpin does not depend on any type or lifetime parameters
+ --> tests/ui/unstable-features/trivial_bounds.rs:19:35
+ |
+19 | impl Unpin for B where Inner: Unpin {} //~ ERROR Unpin does not depend on any type or lifetime parameters
+ | ^^^^^
+
+error: trait bound Wrapper<Inner>: Unpin does not depend on any type or lifetime parameters
+ --> tests/ui/unstable-features/trivial_bounds.rs:27:44
+ |
+27 | impl Unpin for C where Wrapper<Inner>: Unpin {} //~ ERROR Unpin does not depend on any type or lifetime parameters
+ | ^^^^^
--- /dev/null
+#![warn(rust_2018_idioms, single_use_lifetimes)]
+#![allow(dead_code)]
+
+#[macro_use]
+mod auxiliary;
+
+use std::marker::PhantomPinned;
+
+use pin_project::{pin_project, UnsafeUnpin};
+
+#[pin_project(UnsafeUnpin)]
+pub struct Blah<T, U> {
+ f1: U,
+ #[pin]
+ f2: T,
+}
+
+unsafe impl<T: Unpin, U> UnsafeUnpin for Blah<T, U> {}
+
+assert_unpin!(Blah<(), ()>);
+assert_unpin!(Blah<(), PhantomPinned>);
+assert_not_unpin!(Blah<PhantomPinned, ()>);
+assert_not_unpin!(Blah<PhantomPinned, PhantomPinned>);
+
+#[pin_project(UnsafeUnpin)]
+struct OverlappingLifetimeNames<'pin, T, U> {
+ #[pin]
+ f1: U,
+ #[pin]
+ f2: Option<T>,
+ f3: &'pin (),
+}
+
+unsafe impl<T: Unpin, U: Unpin> UnsafeUnpin for OverlappingLifetimeNames<'_, T, U> {}
+
+assert_unpin!(OverlappingLifetimeNames<'_, (), ()>);
+assert_not_unpin!(OverlappingLifetimeNames<'_, PhantomPinned, ()>);
+assert_not_unpin!(OverlappingLifetimeNames<'_, (), PhantomPinned>);
+assert_not_unpin!(OverlappingLifetimeNames<'_, PhantomPinned, PhantomPinned>);
+
+#[test]
+fn trivial_bounds() {
+ #[pin_project(UnsafeUnpin)]
+ pub struct NotImplementUnsafUnpin {
+ #[pin]
+ f: PhantomPinned,
+ }
+
+ assert_not_unpin!(NotImplementUnsafUnpin);
+}
projects / platform / upstream / rust-pin-project.git / commitdiff