Struct ExtensionSpec

pub struct ExtensionSpec { /* private fields */ }

Builder for an extension Manifest, used from build.rs.

Start with ExtensionSpec::new, chain configuration calls, declare functions with function, and hand the result to Build::new. See the crate-level example.

Implementations

impl ExtensionSpec

pub fn new(name: impl Into<String>) -> Self

Creates a spec for an extension with the given name at the current ABI version. The name must be a valid ASCII identifier (validated at Build::generate time).

pub fn wasm_module(self, wasm_module: impl Into<String>) -> Self

Sets the WASM import module the host functions are linked under. Defaults to the extension name when not set.

pub fn prewarm<I, S>(self, modules: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

Sets the Python modules to import eagerly during Wizer pre-initialization, replacing any previously configured list.

pub fn function<F>(self, name: impl Into<String>, configure: F) -> Self

where F: FnOnce(FunctionSpec) -> FunctionSpec,

Declares a host function. The closure configures the function’s params, return type, and asyncness.

pub fn manifest(&self) -> &Manifest

Returns the manifest built so far.

pub fn into_manifest(self) -> Manifest

Consumes the spec, returning the built manifest.

Trait Implementations

impl Clone for ExtensionSpec

fn clone(&self) -> ExtensionSpec

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExtensionSpec

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

Formats the value using the given formatter.