Enum rustc_span::hygiene::ExpnKind
source · pub enum ExpnKind {
Root,
Macro(MacroKind, Symbol),
AstPass(AstPass),
Desugaring(DesugaringKind),
}
Expand description
Expansion kind.
Variants§
Root
No expansion, aka root expansion. Only ExpnId::root()
has this kind.
Macro(MacroKind, Symbol)
Expansion produced by a macro.
AstPass(AstPass)
Transform done by the compiler on the AST.
Desugaring(DesugaringKind)
Desugaring done by the compiler during HIR lowering.
Implementations§
Trait Implementations§
source§impl<__CTX> HashStable<__CTX> for ExpnKindwhere
__CTX: HashStableContext,
impl<__CTX> HashStable<__CTX> for ExpnKindwhere __CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
source§impl PartialEq<ExpnKind> for ExpnKind
impl PartialEq<ExpnKind> for ExpnKind
impl StructuralPartialEq for ExpnKind
Auto Trait Implementations§
impl RefUnwindSafe for ExpnKind
impl Send for ExpnKind
impl Sync for ExpnKind
impl Unpin for ExpnKind
impl UnwindSafe for ExpnKind
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: 8 bytes
Size for each variant:
Root
: 0 bytesMacro
: 7 bytesAstPass
: 1 byteDesugaring
: 1 byte