Enum rustc_expand::mbe::macro_rules::TtHandle
source · enum TtHandle<'tt> {
TtRef(&'tt TokenTree),
Token(TokenTree),
}
Variants§
TtRef(&'tt TokenTree)
This is used in most cases.
Token(TokenTree)
This is only used for implicit token trees. The mbe::TokenTree
must
be mbe::TokenTree::Token
. No other variants are allowed. We store an
mbe::TokenTree
rather than a Token
so that get()
can return a
&mbe::TokenTree
.
Implementations§
Trait Implementations§
Auto Trait Implementations§
impl<'tt> !RefUnwindSafe for TtHandle<'tt>
impl<'tt> !Send for TtHandle<'tt>
impl<'tt> !Sync for TtHandle<'tt>
impl<'tt> Unpin for TtHandle<'tt>
impl<'tt> !UnwindSafe for TtHandle<'tt>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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: 88 bytes
Size for each variant:
TtRef
: 8 bytesToken
: 88 bytes