Trait ObjectCore

pub unsafe trait ObjectCore: Sized + 'static {
    const TYPE_KEY: &'static str;
    const TYPE_DEPTH: i32;

    // Required methods
    fn type_index() -> i32;
    unsafe fn object_header_mut(this: &mut Self) -> &mut TVMFFIObject;
}

The native representation of an object-system type.

Safety

Self must have a compatible C layout with a valid TVMFFIObject prefix at offset zero. Its registered type, inheritance and payload must describe that layout correctly, including for foreign declarations.

A live managed object and its header must remain at their original allocation address until destruction. Safe APIs must not move, replace or expose mutable access to that header while managed; payload mutation must preserve its type invariants. Preallocation builders and values moved out during destruction are not live managed objects and cannot be borrowed as AnyView.

Required Associated Constants

const TYPE_KEY: &'static str

the type key of the object

const TYPE_DEPTH: i32

Depth of this type in the object inheritance tree.

The root Object has depth zero, and every registered subtype has depth one greater than its parent. This value must be non-negative and agree with the runtime type table entry for Self.

Required Methods

fn type_index() -> i32

unsafe fn object_header_mut(this: &mut Self) -> &mut TVMFFIObject

Return the object header This function is implemented as a static function so

Arguments

• this - The object to get the header

Returns

• &mut TVMFFIObject - The object header \return The object header

Safety

The caller must have exclusive access to the header and preserve the managed allocation’s address, reference counts, deleter and dynamic type.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl ObjectCore for ArrayObj

const TYPE_KEY: &'static str = "ffi.Array"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for ListObj

const TYPE_KEY: &'static str = "ffi.List"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for MapObj

const TYPE_KEY: &'static str = "ffi.Map"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for ShapeObj

const TYPE_KEY: &'static str = "ffi.Shape"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for TensorObj

const TYPE_KEY: &'static str = "ffi.Tensor"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for ErrorObj

const TYPE_KEY: &'static str = "ffi.Error"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for ModuleObj

const TYPE_KEY: &'static str = "ffi.Module"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for FunctionObj

const TYPE_KEY: &'static str = "ffi.Function"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for AccessPathObj

const TYPE_KEY: &'static str = "ffi.reflection.AccessPath"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for AccessStepObj

const TYPE_KEY: &'static str = "ffi.reflection.AccessStep"

const TYPE_DEPTH: i32 = 1i32

impl ObjectCore for Object

const TYPE_KEY: &'static str = "ffi.Object"

const TYPE_DEPTH: i32 = 0i32