Struct syntax::codemap::ExpnInfo
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pub struct ExpnInfo { pub call_site: Span, pub callee: NameAndSpan, }
Extra information for tracking spans of macro and syntax sugar expansion
Fields
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 ExpnInfo, with the call_site
pointing to the foo!
invocation.
callee: NameAndSpan
Information about the expansion.
Trait Implementations
impl Clone for ExpnInfo
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fn clone(&self) -> ExpnInfo
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Decodable for ExpnInfo
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fn decode<__D>(__arg_0: &mut __D) -> Result<ExpnInfo, <__D as Decoder>::Error> where
__D: Decoder,
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__D: Decoder,
impl Hash for ExpnInfo
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fn hash<__H>(&self, __arg_0: &mut __H) where
__H: Hasher,
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__H: Hasher,
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Encodable for ExpnInfo
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fn encode<__S>(&self, __arg_0: &mut __S) -> Result<(), <__S as Encoder>::Error> where
__S: Encoder,
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__S: Encoder,