Struct FieldType

pub struct FieldType { /* private fields */ }

Available on crate feature runtime only.

The type of a struct field or an array’s elements.

This is a pair of both the field’s storage type and its mutability (i.e. whether the field can be updated or not).

Implementations

impl FieldType

pub fn new(mutability: Mutability, element_type: StorageType) -> Self

Construct a new field type from the given parts.

pub fn mutability(&self) -> Mutability

Get whether or not this field type is mutable.

pub fn element_type(&self) -> &StorageType

Get this field type’s storage type.

pub fn matches(&self, other: &Self) -> bool

Does this field type match the other field type?

That is, is this field type a subtype of the other field type?

Panics

Panics if either type is associated with a different engine from the other.

pub fn eq(a: &Self, b: &Self) -> bool

Is field type a precisely equal to field type b?

Returns false even if a is a subtype of b or vice versa, if they are not exactly the same field type.

Panics

Panics if either type is associated with a different engine from the other.

Trait Implementations

impl Clone for FieldType

fn clone(&self) -> FieldType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Display for FieldType

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

Formats the value using the given formatter.

impl Hash for FieldType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.