Enum rustc_target::abi::Variants
source · pub enum Variants<V>where
V: Idx,{
Single {
index: V,
},
Multiple {
tag: Scalar,
tag_encoding: TagEncoding<V>,
tag_field: usize,
variants: IndexVec<V, LayoutS<V>>,
},
}
Variants§
Single
Fields
§
index: V
Single enum variants, structs/tuples, unions, and all non-ADTs.
Multiple
Enum-likes with more than one inhabited variant: each variant comes with a discriminant (usually the same as the variant index but the user can assign explicit discriminant values). That discriminant is encoded as a tag on the machine. The layout of each variant is a struct, and they all have space reserved for the tag. For enums, the tag is the sole field of the layout.
Auto Trait Implementations§
impl<V> RefUnwindSafe for Variants<V>where
V: RefUnwindSafe,
impl<V> Send for Variants<V>where
V: Send,
impl<V> Sync for Variants<V>where
V: Sync,
impl<V> Unpin for Variants<V>where
V: Unpin,
impl<V> UnwindSafe for Variants<V>where
V: UnwindSafe,
Blanket Implementations§
Layout§
Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.