Enum rustc_span::hygiene::ExpnKind

pub enum ExpnKind {
    Root,
    Macro(MacroKind, Symbol),
    AstPass(AstPass),
    Desugaring(DesugaringKind),
}

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

impl ExpnKind

pub fn descr(&self) -> String

Trait Implementations

impl Clone for ExpnKind

fn clone(&self) -> ExpnKind

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExpnKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<__D: Decoder> Decodable<__D> for ExpnKind

fn decode(__decoder: &mut __D) -> Self

impl<__E: Encoder> Encodable<__E> for ExpnKind

fn encode(&self, __encoder: &mut __E)

impl<__CTX> HashStable<__CTX> for ExpnKindwhere __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl PartialEq<ExpnKind> for ExpnKind

fn eq(&self, other: &ExpnKind) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ExpnKind

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 bytes
• Macro: 7 bytes
• AstPass: 1 byte
• Desugaring: 1 byte