Trait boa_engine::object::NativeObject

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pub trait NativeObject: Any + Trace + JsData {
    // Required methods
    fn as_any(&self) -> &dyn Any;
    fn as_mut_any(&mut self) -> &mut dyn Any;
    fn type_name_of_value(&self) -> &'static str;
}
Expand description

This trait allows Rust types to be passed around as objects.

This is automatically implemented when a type implements Any, Trace, and JsData.

Required Methods§

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fn as_any(&self) -> &dyn Any

Convert the Rust type which implements NativeObject to a &dyn Any.

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fn as_mut_any(&mut self) -> &mut dyn Any

Convert the Rust type which implements NativeObject to a &mut dyn Any.

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fn type_name_of_value(&self) -> &'static str

Gets the type name of the value.

Implementations§

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impl dyn NativeObject

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pub fn is<T: NativeObject>(&self) -> bool

Returns true if the inner type is the same as T.

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pub fn downcast_ref<T: NativeObject>(&self) -> Option<&T>

Returns some reference to the inner value if it is of type T, or None if it isn’t.

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pub fn downcast_mut<T: NativeObject>(&mut self) -> Option<&mut T>

Returns some mutable reference to the inner value if it is of type T, or None if it isn’t.

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pub unsafe fn downcast_ref_unchecked<T: NativeObject>(&self) -> &T

Returns a reference to the inner value as type dyn T.

§Safety

The contained value must be of type T. Calling this method with the incorrect type is undefined behavior.

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pub unsafe fn downcast_mut_unchecked<T: NativeObject>(&mut self) -> &mut T

Returns a mutable reference to the inner value as type dyn T.

§Safety

The contained value must be of type T. Calling this method with the incorrect type is undefined behavior.

Implementors§