Struct wit_component::metadata::BindgenMetadata

pub struct BindgenMetadata {
    pub world: World,
    pub import_encodings: IndexMap<(String, String), StringEncoding>,
    pub export_encodings: IndexMap<String, StringEncoding>,
}

Result of extracting interfaces embedded within a core wasm file.

This structure is returned by the [extract_module_interfaces] function.

Fields

world: World

All interfaces found within a module, merged together into one World.

import_encodings: IndexMap<(String, String), StringEncoding>

Per-function options imported into the core wasm module, currently only related to string encoding.

export_encodings: IndexMap<String, StringEncoding>

Per-function options exported from the core wasm module, currently only related to string encoding.

Implementations

impl BindgenMetadata

pub fn new(world: World, encoding: StringEncoding) -> BindgenMetadata

Creates a new BindgenMetadata instance holding the given set of interfaces which are expected to all use the encoding specified.

pub fn merge(&mut self, other: BindgenMetadata) -> Result<()>

Merges another BindgenMetadata into this one.

This operation is intended to be akin to “merging worlds” when the abstraction level for that is what we’re working at here. For now the merge operation only succeeds if the two metadata descriptions are entirely disjoint.

Note that at this time there’s no support for changing string encodings between metadata.

Trait Implementations

impl Default for BindgenMetadata

fn default() -> BindgenMetadata

Returns the “default value” for a type.