Struct HookContext 

pub struct HookContext { /* private fields */ }

Manages hook state across render cycles for a DynamicNode.

Stores boxed Any values keyed by hook call order, enabling use_signal and similar hooks to persist state between re-renders of the same dynamic node.

Implements Copy for ergonomic use; all copies share the same underlying state.

SAFETY: The inner pointer is allocated via Box::leak and lives for the entire program. This is safe in single-threaded WASM contexts where no concurrent access can occur.

Implementations

impl HookContext

Implementation of hook context lifecycle and hook index management.

pub fn leak_mut(&self) -> &'static mut HookContextInner

Returns a mutable reference to the inner hook context state by going through usize intermediate conversion.

Returns

• &'static mut HookContextInner - A mutable reference to the inner state.

pub fn reset_hook_index(&mut self)

Resets the hook index for a new render cycle.

Sets the hook index back to 0 so that subsequent hook calls re-associate with their stored state by call order.

pub fn set_arm_changed(&mut self, changed: bool)

Notifies the hook context that a match arm is being entered. Toggles the arm_changed flag; if it differs from the previous value, the hooks array is cleared to prevent signal leakage between arms.

Arguments

• bool - The new arm changed state.

Trait Implementations

impl Clone for HookContext

Clones the hook context, sharing the same inner state.

fn clone(&self) -> Self

Returns a bitwise copy of this hook context.

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

Performs copy-assignment from source.

impl Debug for HookContext

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

Formats the value using the given formatter.

impl Default for HookContext

Provides a default empty hook context.

fn default() -> Self

Returns a default HookContext by allocating a new empty inner via Box::leak.

impl From<HookContext> for usize

Implementation of From trait for converting HookContext into usize address.

fn from(context: HookContext) -> Self

Converts a HookContext into its memory address.

Arguments

• HookContext - The hook context handle.

Returns

• usize - The memory address of the hook context’s inner state.

impl From<usize> for HookContext

Implementation of From trait for converting usize address into HookContext.

fn from(address: usize) -> Self

Converts a memory address into a HookContext handle.

Arguments

• usize - The memory address previously obtained from HookContext conversion.

Returns

• HookContext - A hook context handle wrapping the pointer at the given address.

Safety

• The address is guaranteed to be a valid HookContextInner instance that was previously converted from a hook context handle and is managed by the runtime.

impl Copy for HookContext

Copies the hook context, sharing the same inner state.

A HookContext is just a raw pointer; copying it is a trivial bitwise copy.