Enum rustc_span::hygiene::ExpnKind[][src]

pub enum ExpnKind {
    Root,
    Macro(MacroKindSymbol),
    AstPass(AstPass),
    Desugaring(DesugaringKind),
    Inlined,
}
Expand description

Expansion kind.

Variants

Root

No expansion, aka root expansion. Only ExpnId::root() has this kind.

Macro(MacroKindSymbol)

Tuple Fields

1: Symbol

Expansion produced by a macro.

AstPass(AstPass)

Tuple Fields

Transform done by the compiler on the AST.

Desugaring(DesugaringKind)

Tuple Fields

Desugaring done by the compiler during HIR lowering.

Inlined

MIR inlining

Implementations

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

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

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

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
  • Inlined: 0 bytes