pub trait GcCell: Any {
// Provided methods
fn compute_size(&self) -> usize { ... }
fn type_name(&self) -> &'static str { ... }
}Expand description
GcCell is a type that can be allocated in GC heap.
Provided Methods§
Sourcefn compute_size(&self) -> usize
fn compute_size(&self) -> usize
Used when object has dynamic size i.e arrays
fn type_name(&self) -> &'static str
Implementations§
Source§impl dyn GcCell
impl dyn GcCell
Sourcepub fn downcast_ref<T: GcCell>(&self) -> Option<&T>
pub fn downcast_ref<T: GcCell>(&self) -> Option<&T>
Returns some reference to the boxed value if it is of type T, or
None if it isn’t.
Sourcepub unsafe fn downcast_ref_unchecked<T: GcCell>(&self) -> &T
pub unsafe fn downcast_ref_unchecked<T: GcCell>(&self) -> &T
Returns a reference to the boxed value, blindly assuming it to be of type T.
If you are not absolutely certain of T, you must not call this.
Sourcepub fn downcast_mut<T: GcCell>(&mut self) -> Option<&mut T>
pub fn downcast_mut<T: GcCell>(&mut self) -> Option<&mut T>
Returns some mutable reference to the boxed value if it is of type T, or
None if it isn’t.
Sourcepub unsafe fn downcast_mut_unchecked<T: GcCell>(&mut self) -> &mut T
pub unsafe fn downcast_mut_unchecked<T: GcCell>(&mut self) -> &mut T
Returns a mutable reference to the boxed value, blindly assuming it to be of type T.
If you are not absolutely certain of T, you must not call this.
Source§impl dyn GcCell
impl dyn GcCell
Sourcepub fn downcast<T: GcCell>(self: Box<Self>) -> Result<Box<T>, Box<Self>>
pub fn downcast<T: GcCell>(self: Box<Self>) -> Result<Box<T>, Box<Self>>
Returns the boxed value if it is of type T, or Err(Self) if it isn’t.
Sourcepub unsafe fn downcast_unchecked<T: GcCell>(self: Box<Self>) -> Box<T>
pub unsafe fn downcast_unchecked<T: GcCell>(self: Box<Self>) -> Box<T>
Returns the boxed value, blindly assuming it to be of type T.
If you are not absolutely certain of T, you must not call this.