Struct rustc_ast::tokenstream::AttrTokenStream

pub struct AttrTokenStream(pub Lrc<Vec<AttrTokenTree>>);

An AttrTokenStream is similar to a TokenStream, but with extra information about the tokens for attribute targets. This is used during expansion to perform early cfg-expansion, and to process attributes during proc-macro invocations.

Tuple Fields

0: Lrc<Vec<AttrTokenTree>>

Implementations

impl AttrTokenStream

pub fn new(tokens: Vec<AttrTokenTree>) -> AttrTokenStream

pub fn to_tokenstream(&self) -> TokenStream

Converts this AttrTokenStream to a plain TokenStream. During conversion, AttrTokenTree::Attributes get ‘flattened’ back to a TokenStream of the form outer_attr attr_target. If there are inner attributes, they are inserted into the proper place in the attribute target tokens.

Trait Implementations

impl Clone for AttrTokenStream

fn clone(&self) -> AttrTokenStream

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AttrTokenStream

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for AttrTokenStream

fn decode(__decoder: &mut __D) -> Self

impl Default for AttrTokenStream

fn default() -> AttrTokenStream

Returns the “default value” for a type.

impl<__E: Encoder> Encodable<__E> for AttrTokenStream

fn encode(&self, __encoder: &mut __E)

impl ToAttrTokenStream for AttrTokenStream

fn to_attr_token_stream(&self) -> AttrTokenStream

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes