Trait bevy_reflect::TypeData
source · pub trait TypeData: Downcast + Send + Sync {
// Required method
fn clone_type_data(&self) -> Box<dyn TypeData>;
}
Expand description
A trait used to type-erase type metadata.
Type data can be registered to the TypeRegistry
and stored on a type’s TypeRegistration
.
While type data is often generated using the #[reflect_trait]
macro,
almost any type that implements Clone
can be considered “type data”.
This is because it has a blanket implementation over all T
where T: Clone + Send + Sync + 'static
.
See the crate-level documentation for more information on type data and type registration.
Required Methods§
fn clone_type_data(&self) -> Box<dyn TypeData>
Implementations§
source§impl dyn TypeData
impl dyn TypeData
sourcepub fn is<__T: TypeData>(&self) -> bool
pub fn is<__T: TypeData>(&self) -> bool
Returns true if the trait object wraps an object of type __T
.
sourcepub fn downcast<__T: TypeData>(self: Box<Self>) -> Result<Box<__T>, Box<Self>>
pub fn downcast<__T: TypeData>(self: Box<Self>) -> Result<Box<__T>, Box<Self>>
Returns a boxed object from a boxed trait object if the underlying object is of type
__T
. Returns the original boxed trait if it isn’t.
sourcepub fn downcast_rc<__T: TypeData>(self: Rc<Self>) -> Result<Rc<__T>, Rc<Self>>
pub fn downcast_rc<__T: TypeData>(self: Rc<Self>) -> Result<Rc<__T>, Rc<Self>>
Returns an Rc
-ed object from an Rc
-ed trait object if the underlying object is of
type __T
. Returns the original Rc
-ed trait if it isn’t.
sourcepub fn downcast_ref<__T: TypeData>(&self) -> Option<&__T>
pub fn downcast_ref<__T: TypeData>(&self) -> Option<&__T>
Returns a reference to the object within the trait object if it is of type __T
, or
None
if it isn’t.
sourcepub fn downcast_mut<__T: TypeData>(&mut self) -> Option<&mut __T>
pub fn downcast_mut<__T: TypeData>(&mut self) -> Option<&mut __T>
Returns a mutable reference to the object within the trait object if it is of type
__T
, or None
if it isn’t.