rust/proc-macro2/marker.rs

Source file repositories/reference/linux-study-clean/rust/proc-macro2/marker.rs

File Facts

System
Linux kernel
Corpus path
rust/proc-macro2/marker.rs
Extension
.rs
Size
620 bytes
Lines
20
Domain
Rust Kernel Layer
Bucket
Rust API Membrane
Inferred role
Rust Kernel Layer: implementation source
Status
source implementation candidate

Why This File Exists

Rust-side wrappers and abstractions around kernel C APIs, ownership contracts, allocation, synchronization, and module integration.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: Apache-2.0 OR MIT

use alloc::rc::Rc;
use core::marker::PhantomData;
use core::panic::{RefUnwindSafe, UnwindSafe};

// Zero sized marker with the correct set of autotrait impls we want all proc
// macro types to have.
#[derive(Copy, Clone)]
#[cfg_attr(
    all(procmacro2_semver_exempt, any(not(wrap_proc_macro), super_unstable)),
    derive(PartialEq, Eq)
)]
pub(crate) struct ProcMacroAutoTraits(PhantomData<Rc<()>>);

pub(crate) const MARKER: ProcMacroAutoTraits = ProcMacroAutoTraits(PhantomData);

impl UnwindSafe for ProcMacroAutoTraits {}
impl RefUnwindSafe for ProcMacroAutoTraits {}

Annotation

Implementation Notes