[][src]Struct rustc_span::hygiene::ExpnId

pub struct ExpnId(u32);

A unique ID associated with a macro invocation and expansion.


impl ExpnId[src]

pub fn fresh(expn_data: Option<ExpnData>) -> Self[src]

pub fn root() -> Self[src]

The ID of the theoretical expansion that generates freshly parsed, unexpanded AST.

pub fn as_u32(self) -> u32[src]

pub fn from_u32(raw: u32) -> ExpnId[src]

pub fn expn_data(self) -> ExpnData[src]

pub fn set_expn_data(self, expn_data: ExpnData)[src]

pub fn is_descendant_of(self, ancestor: ExpnId) -> bool[src]

pub fn outer_expn_is_descendant_of(self, ctxt: SyntaxContext) -> bool[src]

expn_id.outer_expn_is_descendant_of(ctxt) is equivalent to but faster than expn_id.is_descendant_of(ctxt.outer_expn()).

pub fn expansion_cause(self) -> Option<Span>[src]

Returns span for the macro which originally caused this expansion to happen.

Stops backtracing at include! boundary.

Trait Implementations

impl Clone for ExpnId[src]

impl Copy for ExpnId[src]

impl Debug for ExpnId[src]

impl<D: Decoder> Decodable<D> for ExpnId[src]

impl<E: Encoder> Encodable<E> for ExpnId[src]

impl Eq for ExpnId[src]

impl Hash for ExpnId[src]

impl<CTX: HashStableContext> HashStable<CTX> for ExpnId[src]

impl PartialEq<ExpnId> for ExpnId[src]

impl StructuralEq for ExpnId[src]

impl StructuralPartialEq for ExpnId[src]

Auto Trait Implementations

impl RefUnwindSafe for ExpnId

impl Send for ExpnId

impl Sync for ExpnId

impl Unpin for ExpnId

impl UnwindSafe for ExpnId

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized

impl<T> Borrow<T> for T where
    T: ?Sized

impl<T> BorrowMut<T> for T where
    T: ?Sized

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 

impl<T> ToOwned for T where
    T: Clone

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.