[−][src]Struct rustc_ap_rustc_span::hygiene::ExpnData
A subset of properties from both macro definition and macro call available through global data. Avoid using this if you have access to the original definition or call structures.
Fields
kind: ExpnKind
The kind of this expansion - macro or compiler desugaring.
parent: ExpnId
The expansion that produced this expansion.
call_site: Span
The location of the actual macro invocation or syntax sugar , e.g.
let x = foo!();
or if let Some(y) = x {}
This may recursively refer to other macro invocations, e.g., if
foo!()
invoked bar!()
internally, and there was an
expression inside bar!
; the call_site of the expression in
the expansion would point to the bar!
invocation; that
call_site span would have its own ExpnData, with the call_site
pointing to the foo!
invocation.
def_site: Span
The span of the macro definition (possibly dummy). This span serves only informational purpose and is not used for resolution.
allow_internal_unstable: Option<Lrc<[Symbol]>>
List of #[unstable]
/feature-gated features that the macro is allowed to use
internally without forcing the whole crate to opt-in
to them.
allow_internal_unsafe: bool
Whether the macro is allowed to use unsafe
internally
even if the user crate has #![forbid(unsafe_code)]
.
local_inner_macros: bool
Enables the macro helper hack (ident!(...)
-> $crate::ident!(...)
)
for a given macro.
edition: Edition
Edition of the crate in which the macro is defined.
macro_def_id: Option<DefId>
The DefId
of the macro being invoked,
if this ExpnData
corresponds to a macro invocation
krate: CrateNum
The crate that originally created this ExpnData. During metadata serialization, we only encode
ExpnDatas that were created locally - when our serialized metadata is decoded, foreign
ExpnIds will have their
ExpnDatalooked up from the crate specified by
Crate
orig_id: Option<u32>
The raw that this ExpnData
had in its original crate.
An ExpnData
can be created before being assigned an ExpnId
,
so this might be None
until set_expn_data
is called
Implementations
impl ExpnData
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pub fn default(
kind: ExpnKind,
call_site: Span,
edition: Edition,
macro_def_id: Option<DefId>
) -> ExpnData
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kind: ExpnKind,
call_site: Span,
edition: Edition,
macro_def_id: Option<DefId>
) -> ExpnData
Constructs expansion data with default properties.
pub fn allow_unstable(
kind: ExpnKind,
call_site: Span,
edition: Edition,
allow_internal_unstable: Lrc<[Symbol]>,
macro_def_id: Option<DefId>
) -> ExpnData
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kind: ExpnKind,
call_site: Span,
edition: Edition,
allow_internal_unstable: Lrc<[Symbol]>,
macro_def_id: Option<DefId>
) -> ExpnData
pub fn is_root(&self) -> bool
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Trait Implementations
impl Clone for ExpnData
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impl Debug for ExpnData
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impl<__D: Decoder> Decodable<__D> for ExpnData
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impl<__E: Encoder> Encodable<__E> for ExpnData
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impl<__CTX> HashStable<__CTX> for ExpnData where
__CTX: HashStableContext,
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__CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
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impl !PartialEq<ExpnData> for ExpnData
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Auto Trait Implementations
impl !RefUnwindSafe for ExpnData
impl !Send for ExpnData
impl !Sync for ExpnData
impl Unpin for ExpnData
impl UnwindSafe for ExpnData
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<'a, T> Captures<'a> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Erased for T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,