rust/syn/macros.rs

Source file repositories/reference/linux-study-clean/rust/syn/macros.rs

File Facts

System
Linux kernel
Corpus path
rust/syn/macros.rs
Extension
.rs
Size
4740 bytes
Lines
185
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

fn to_tokens(&self, _: &mut ::proc_macro2::TokenStream) {
                unreachable!()
            }
        }
    };

    (
        $(#[$attr:meta])*
        $pub:ident $struct:ident $name:ident $body:tt
    ) => {
        check_keyword_matches!(pub $pub);
        check_keyword_matches!(struct $struct);

        $(#[$attr])* $pub $struct $name $body
    };
}

#[cfg(any(feature = "full", feature = "derive"))]
macro_rules! ast_enum {
    (
        $(#[$enum_attr:meta])*
        $pub:ident $enum:ident $name:ident $body:tt
    ) => {
        check_keyword_matches!(pub $pub);
        check_keyword_matches!(enum $enum);

        $(#[$enum_attr])* $pub $enum $name $body
    };
}

macro_rules! ast_enum_of_structs {
    (
        $(#[$enum_attr:meta])*
        $pub:ident $enum:ident $name:ident $body:tt
    ) => {
        check_keyword_matches!(pub $pub);
        check_keyword_matches!(enum $enum);

        $(#[$enum_attr])* $pub $enum $name $body

        ast_enum_of_structs_impl!($name $body);

        #[cfg(feature = "printing")]
        generate_to_tokens!(() tokens $name $body);
    };
}

macro_rules! ast_enum_of_structs_impl {
    (
        $name:ident {
            $(
                $(#[cfg $cfg_attr:tt])*
                $(#[doc $($doc_attr:tt)*])*
                $variant:ident $( ($member:ident) )*,
            )*
        }
    ) => {
        $($(
            ast_enum_from_struct!($name::$variant, $member);
        )*)*
    };
}

macro_rules! ast_enum_from_struct {
    // No From<TokenStream> for verbatim variants.
    ($name:ident::Verbatim, $member:ident) => {};

    ($name:ident::$variant:ident, $member:ident) => {
        impl From<$member> for $name {
            fn from(e: $member) -> $name {
                $name::$variant(e)
            }
        }
    };
}

#[cfg(feature = "printing")]
macro_rules! generate_to_tokens {
    (
        ($($arms:tt)*) $tokens:ident $name:ident {
            $(#[cfg $cfg_attr:tt])*
            $(#[doc $($doc_attr:tt)*])*
            $variant:ident,
            $($next:tt)*
        }
    ) => {
        generate_to_tokens!(
            ($($arms)* $(#[cfg $cfg_attr])* $name::$variant => {})
            $tokens $name { $($next)* }
        );

Annotation

Implementation Notes