Macro cargo_component_bindings::generate

generate!() { /* proc-macro */ }

Used to generate bindings for a WebAssembly component.

By default, all world exports are expected to be implemented on a type named Component where the bindings! macro is invoked.

Additionally, all resource exports are expected to be implemented on a type named <ResourceName>.

For example, a resource named file would be implemented on a type named File in the same scope as the generate! macro invocation.

Options

The macro accepts the following options:

• implementor: The name of the type to implement world exports on.
• resources: A map of resource names to resource implementor types.
• ownership: The ownership model to use for resources.

Examples

Using the default implementor names:

cargo_component_bindings::generate!()

Specifying a custom implementor type named MyComponent:

cargo_component_bindings::generate!({
    implementor: MyComponent,
})

Specifying a custom resource implementor type named MyResource:

cargo_component_bindings::generate!({
    resources: {
        "my:package/iface/res": MyResource,
    }
})

Specifying the borrowing-duplicate-if-necessary ownership model for resources:

cargo_component_bindings::generate!({
     ownership: "borrowing-duplicate-if-necessary"
})