pub struct ElementSection { /* private fields */ }
Expand description

An encoder for the element section.

Element sections are only supported for modules.

Example

use wasm_encoder::{
    Elements, ElementSection, Module, TableSection, TableType,
    ValType, ConstExpr
};

let mut tables = TableSection::new();
tables.table(TableType {
    element_type: ValType::FuncRef,
    minimum: 128,
    maximum: None,
});

let mut elements = ElementSection::new();
let table_index = 0;
let offset = ConstExpr::i32_const(42);
let element_type = ValType::FuncRef;
let functions = Elements::Functions(&[
    // Function indices...
]);
elements.active(Some(table_index), &offset, element_type, functions);

let mut module = Module::new();
module
    .section(&tables)
    .section(&elements);

let wasm_bytes = module.finish();

Implementations

Create a new element section encoder.

The number of element segments in the section.

Determines if the section is empty.

Define an element segment.

Define an active element segment.

Active element specifying a None table forces the MVP encoding and refers to the 0th table holding funcrefs. Non-None tables use the encoding introduced with the bulk memory proposal and can refer to tables with any valid reference type.

Encode a passive element segment.

Passive segments are part of the bulk memory proposal.

Encode a declared element segment.

Declared segments are part of the bulk memory proposal.

Copy a raw, already-encoded element segment into this elements section.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

Encode the type into the given byte sink.

Gets the section identifier for this section.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.