Enum Def

#[non_exhaustive]
#[repr(C)]
pub enum Def<'shape> {
    Undefined,
    Scalar(ScalarDef<'shape>),
    Map(MapDef<'shape>),
    Set(SetDef<'shape>),
    List(ListDef<'shape>),
    Array(ArrayDef<'shape>),
    Slice(SliceDef<'shape>),
    Option(OptionDef<'shape>),
    SmartPointer(SmartPointerDef<'shape>),
}

The semantic definition of a shape: is it more like a scalar, a map, a list?

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Undefined

Undefined - you can interact with the type through Type and ValueVTable.

Scalar(ScalarDef<'shape>)

Scalar — those don’t have a def, they’re not composed of other things. You can interact with them through ValueVTable.

e.g. u32, String, bool, SocketAddr, etc.

Map(MapDef<'shape>)

Map — keys are dynamic (and strings, sorry), values are homogeneous

e.g. HashMap<String, T>

Set(SetDef<'shape>)

Unique set of homogenous values

e.g. HashSet<T>

List(ListDef<'shape>)

Ordered list of heterogenous values, variable size

e.g. Vec<T>

Array(ArrayDef<'shape>)

Fixed-size array of heterogeneous values, fixed size

e.g. [T; 3]

Slice(SliceDef<'shape>)

Slice - a reference to a contiguous sequence of elements

e.g. [T]

Option(OptionDef<'shape>)

Option

e.g. Option<T>

SmartPointer(SmartPointerDef<'shape>)

Smart pointers, like Arc<T>, Rc<T>, etc.

Implementations

impl<'shape> Def<'shape>

pub fn into_scalar(self) -> Result<ScalarDef<'shape>, Def<'shape>>

Returns the ScalarDef wrapped in an Ok if this is a Def::Scalar.

pub fn into_map(self) -> Result<MapDef<'shape>, Def<'shape>>

Returns the MapDef wrapped in an Ok if this is a Def::Map.

pub fn into_set(self) -> Result<SetDef<'shape>, Def<'shape>>

Returns the SetDef wrapped in an Ok if this is a Def::Set.

pub fn into_list(self) -> Result<ListDef<'shape>, Def<'shape>>

Returns the ListDef wrapped in an Ok if this is a Def::List.

pub fn into_array(self) -> Result<ArrayDef<'shape>, Def<'shape>>

Returns the ArrayDef wrapped in an Ok if this is a Def::Array.

pub fn into_slice(self) -> Result<SliceDef<'shape>, Def<'shape>>

Returns the SliceDef wrapped in an Ok if this is a Def::Slice.

pub fn into_option(self) -> Result<OptionDef<'shape>, Def<'shape>>

Returns the OptionDef wrapped in an Ok if this is a Def::Option.

pub fn into_smart_pointer(self) -> Result<SmartPointerDef<'shape>, Def<'shape>>

Returns the SmartPointerDef wrapped in an Ok if this is a Def::SmartPointer.

Trait Implementations

impl<'shape> Clone for Def<'shape>

fn clone(&self) -> Def<'shape>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'shape> Debug for Def<'shape>

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

Formats the value using the given formatter.

impl<'shape> Copy for Def<'shape>