Struct Table 

pub struct Table<const MAX_SIZE: usize> { /* private fields */ }

Indirect call table with a compile-time maximum size.

MAX_SIZE is derived from the Wasm module’s table declaration. Entries are Option<FuncRef> — None means the slot is empty (calling it traps with UndefinedElement).

Implementations

impl<const MAX_SIZE: usize> Table<MAX_SIZE>

pub fn try_new(initial_size: usize) -> Result<Self, ConstructionError>

Create a new table with initial_size slots, all empty (None).

Errors

Returns ConstructionError::TableInitialSizeExceedsMax if initial_size > MAX_SIZE.

pub fn size(&self) -> usize

Current number of active table slots.

pub fn get(&self, index: u32) -> WasmResult<FuncRef>

Look up a table entry by index. Returns the FuncRef if present.

• TableOutOfBounds if index >= active_size
• UndefinedElement if the slot is None

pub fn set(&mut self, index: u32, entry: Option<FuncRef>) -> WasmResult<()>

Set a table entry. Used during module initialization (element segments).

Returns Err(TableOutOfBounds) if index >= active_size.

pub fn init_elements( &mut self, base: u32, entries: &[(u32, u32)], ) -> WasmResult<()>

Initialize table entries from element segment data.

Writes entries (each as (type_index, func_index)) into consecutive slots starting at base. Replaces per-slot set() calls in generated constructors and propagates bounds errors via ? instead of panicking.

Errors

Returns Err(TableOutOfBounds) if any slot index is out of range.

pub fn grow(&mut self, delta: u32, init: Option<FuncRef>) -> i32

Grow the table by delta slots, filling new slots with init. Returns the previous size, or -1 on failure.