[−][src]Struct syntax::source_map::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.
default_transparency: Transparency
Transparency used by apply_mark
for the expansion with this expansion data by default.
allow_internal_unstable: Option<Rc<[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.
Methods
impl ExpnData
[src]
pub fn default(kind: ExpnKind, call_site: Span, edition: Edition) -> ExpnData
[src]
Constructs expansion data with default properties.
pub fn allow_unstable(
kind: ExpnKind,
call_site: Span,
edition: Edition,
allow_internal_unstable: Rc<[Symbol]>
) -> ExpnData
[src]
kind: ExpnKind,
call_site: Span,
edition: Edition,
allow_internal_unstable: Rc<[Symbol]>
) -> ExpnData
pub fn is_root(&self) -> bool
[src]
Trait Implementations
impl Debug for ExpnData
[src]
impl Decodable for ExpnData
[src]
impl Clone for ExpnData
[src]
fn clone(&self) -> ExpnData
[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl Encodable for ExpnData
[src]
Auto Trait Implementations
impl Unpin for ExpnData
impl !Send for ExpnData
impl !Sync for ExpnData
impl !RefUnwindSafe for ExpnData
impl UnwindSafe for ExpnData
Blanket Implementations
impl<T> From<T> for T
[src]
impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T> ToOwned for T where
T: Clone,
[src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
[src]
fn clone_into(&self, target: &mut T)
[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
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>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
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>
[src]
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> Erased for T
[src]
impl<T> Encodable for T where
T: UseSpecializedEncodable + ?Sized,
[src]
T: UseSpecializedEncodable + ?Sized,
impl<T> Decodable for T where
T: UseSpecializedDecodable,
[src]
T: UseSpecializedDecodable,