3 files changed, 116 insertions, 0 deletions
diff --git a/third_party/rust/tokio/src/doc/mod.rs b/third_party/rust/tokio/src/doc/mod.rs
new file mode 100644
index 0000000000..3a94934490
--- /dev/null
+++ b/third_party/rust/tokio/src/doc/mod.rs
@@ -0,0 +1,24 @@
+//! Types which are documented locally in the Tokio crate, but does not actually
+//! live here.
+//!
+//! **Note** this module is only visible on docs.rs, you cannot use it directly
+//! in your own code.
+
+/// The name of a type which is not defined here.
+///
+/// This is typically used as an alias for another type, like so:
+///
+/// ```rust,ignore
+/// /// See [some::other::location](https://example.com).
+/// type DEFINED_ELSEWHERE = crate::doc::NotDefinedHere;
+/// ```
+///
+/// This type is uninhabitable like the [`never` type] to ensure that no one
+/// will ever accidentally use it.
+///
+/// [`never` type]: https://doc.rust-lang.org/std/primitive.never.html
+#[derive(Debug)]
+pub enum NotDefinedHere {}
+
+pub mod os;
+pub mod winapi;
diff --git a/third_party/rust/tokio/src/doc/os.rs b/third_party/rust/tokio/src/doc/os.rs
new file mode 100644
index 0000000000..0ddf86959b
--- /dev/null
+++ b/third_party/rust/tokio/src/doc/os.rs
@@ -0,0 +1,26 @@
+//! See [std::os](https://doc.rust-lang.org/std/os/index.html).
+
+/// Platform-specific extensions to `std` for Windows.
+///
+/// See [std::os::windows](https://doc.rust-lang.org/std/os/windows/index.html).
+pub mod windows {
+    /// Windows-specific extensions to general I/O primitives.
+    ///
+    /// See [std::os::windows::io](https://doc.rust-lang.org/std/os/windows/io/index.html).
+    pub mod io {
+        /// See [std::os::windows::io::RawHandle](https://doc.rust-lang.org/std/os/windows/io/type.RawHandle.html)
+        pub type RawHandle = crate::doc::NotDefinedHere;
+
+        /// See [std::os::windows::io::AsRawHandle](https://doc.rust-lang.org/std/os/windows/io/trait.AsRawHandle.html)
+        pub trait AsRawHandle {
+            /// See [std::os::windows::io::FromRawHandle::from_raw_handle](https://doc.rust-lang.org/std/os/windows/io/trait.AsRawHandle.html#tymethod.as_raw_handle)
+            fn as_raw_handle(&self) -> RawHandle;
+        }
+
+        /// See [std::os::windows::io::FromRawHandle](https://doc.rust-lang.org/std/os/windows/io/trait.FromRawHandle.html)
+        pub trait FromRawHandle {
+            /// See [std::os::windows::io::FromRawHandle::from_raw_handle](https://doc.rust-lang.org/std/os/windows/io/trait.FromRawHandle.html#tymethod.from_raw_handle)
+            unsafe fn from_raw_handle(handle: RawHandle) -> Self;
+        }
+    }
+}
diff --git a/third_party/rust/tokio/src/doc/winapi.rs b/third_party/rust/tokio/src/doc/winapi.rs
new file mode 100644
index 0000000000..be68749e00
--- /dev/null
+++ b/third_party/rust/tokio/src/doc/winapi.rs
@@ -0,0 +1,66 @@
+//! See [winapi].
+//!
+//! [winapi]: https://docs.rs/winapi
+
+/// See [winapi::shared](https://docs.rs/winapi/*/winapi/shared/index.html).
+pub mod shared {
+    /// See [winapi::shared::winerror](https://docs.rs/winapi/*/winapi/shared/winerror/index.html).
+    #[allow(non_camel_case_types)]
+    pub mod winerror {
+        /// See [winapi::shared::winerror::ERROR_ACCESS_DENIED][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/shared/winerror/constant.ERROR_ACCESS_DENIED.html
+        pub type ERROR_ACCESS_DENIED = crate::doc::NotDefinedHere;
+
+        /// See [winapi::shared::winerror::ERROR_PIPE_BUSY][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/shared/winerror/constant.ERROR_PIPE_BUSY.html
+        pub type ERROR_PIPE_BUSY = crate::doc::NotDefinedHere;
+
+        /// See [winapi::shared::winerror::ERROR_MORE_DATA][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/shared/winerror/constant.ERROR_MORE_DATA.html
+        pub type ERROR_MORE_DATA = crate::doc::NotDefinedHere;
+    }
+}
+
+/// See [winapi::um](https://docs.rs/winapi/*/winapi/um/index.html).
+pub mod um {
+    /// See [winapi::um::winbase](https://docs.rs/winapi/*/winapi/um/winbase/index.html).
+    #[allow(non_camel_case_types)]
+    pub mod winbase {
+        /// See [winapi::um::winbase::PIPE_TYPE_MESSAGE][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/um/winbase/constant.PIPE_TYPE_MESSAGE.html
+        pub type PIPE_TYPE_MESSAGE = crate::doc::NotDefinedHere;
+
+        /// See [winapi::um::winbase::PIPE_TYPE_BYTE][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/um/winbase/constant.PIPE_TYPE_BYTE.html
+        pub type PIPE_TYPE_BYTE = crate::doc::NotDefinedHere;
+
+        /// See [winapi::um::winbase::PIPE_CLIENT_END][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/um/winbase/constant.PIPE_CLIENT_END.html
+        pub type PIPE_CLIENT_END = crate::doc::NotDefinedHere;
+
+        /// See [winapi::um::winbase::PIPE_SERVER_END][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/um/winbase/constant.PIPE_SERVER_END.html
+        pub type PIPE_SERVER_END = crate::doc::NotDefinedHere;
+
+        /// See [winapi::um::winbase::SECURITY_IDENTIFICATION][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/um/winbase/constant.SECURITY_IDENTIFICATION.html
+        pub type SECURITY_IDENTIFICATION = crate::doc::NotDefinedHere;
+    }
+
+    /// See [winapi::um::minwinbase](https://docs.rs/winapi/*/winapi/um/minwinbase/index.html).
+    #[allow(non_camel_case_types)]
+    pub mod minwinbase {
+        /// See [winapi::um::minwinbase::SECURITY_ATTRIBUTES][winapi]
+        ///
+        /// [winapi]: https://docs.rs/winapi/*/winapi/um/minwinbase/constant.SECURITY_ATTRIBUTES.html
+        pub type SECURITY_ATTRIBUTES = crate::doc::NotDefinedHere;
+    }
+}