Struct Node

pub(super) struct Node {
    pub tag: BorTag,
    pub parent: Option<UniIndex>,
    pub children: SmallVec<[UniIndex; 4]>,
    default_initial_perm: Permission,
    default_initial_idempotent_foreign_access: IdempotentForeignAccess,
    pub debug_info: NodeDebugInfo,
}

A node in the borrow tree. Each node is uniquely identified by a tag via the nodes map of Tree.

Fields

tag: BorTag

The tag of this node.

parent: Option<UniIndex>

All tags except the root have a parent tag.

children: SmallVec<[UniIndex; 4]>

If the pointer was reborrowed, it has children.

default_initial_perm: Permission

Either Reserved, Frozen, or Disabled, it is the permission this tag will lazily be initialized to on the first access. It is only ever Disabled for a tree root, since the root is initialized to Active by its own separate mechanism.

default_initial_idempotent_foreign_access: IdempotentForeignAccess

The default initial (strongest) idempotent foreign access. This participates in the invariant for LocationState::idempotent_foreign_access in cases where there is no location state yet. See foreign_access_skipping.rs, and LocationState::idempotent_foreign_access for more information

debug_info: NodeDebugInfo

Some extra information useful only for debugging purposes

Implementations

impl Node

pub fn default_location_state(&self) -> LocationState

Trait Implementations

impl Clone for Node

fn clone(&self) -> Node

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Node

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

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 136 bytes