Enum wasmtime_environ::TableInitialValue

pub enum TableInitialValue {
    Null {
        precomputed: Vec<FuncIndex>,
    },
    FuncRef(FuncIndex),
    GlobalGet(GlobalIndex),
    I31Ref(i32),
}

Initial value for all elements in a table.

Variants

Null

Initialize each table element to null, optionally setting some elements to non-null given the precomputed image.

Fields

precomputed: Vec<FuncIndex>

A precomputed image of table initializers for this table.

This image is constructed during try_func_table_init and null-initialized elements are represented with FuncIndex::reserved_value(). Note that this image is empty by default and may not encompass the entire span of the table in which case the elements are initialized to null.

FuncRef(FuncIndex)

Initialize each table element to the function reference given by the FuncIndex.

GlobalGet(GlobalIndex)

At instantiation time this global is loaded and the funcref value is used to initialize the table.

I31Ref(i32)

Initialize the table element to an i31ref of the given value.

Trait Implementations

impl Clone for TableInitialValue

fn clone(&self) -> TableInitialValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TableInitialValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TableInitialValue

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TableInitialValue

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.