Struct LoweringTable 

pub struct LoweringTable {
    pub cpu_ref: fn(&[u8], &mut Vec<u8>),
    pub primary_text: Option<fn(&LoweringCtx<'_>) -> Result<(), String>>,
    pub primary_binary: Option<fn(&LoweringCtx<'_>) -> Vec<u32>>,
    pub secondary_text: Option<fn(&LoweringCtx<'_>) -> TextModule>,
    pub native_module: Option<fn(&LoweringCtx<'_>) -> NativeModule>,
    pub extensions: HashMap<&'static str, fn(&LoweringCtx<'_>) -> Result<Vec<u8>, String>, FxBuildHasher>,
}

Lowering function table attached to an operation definition.

The named fields are terminal 0.6 in-tree slots. extensions is the open-ended slot: any out-of-tree backend registers its builder under its stable backend-id string. Look up by id via LoweringTable::extension.

Not #[non_exhaustive] so static registrations can use functional record update (..LoweringTable::empty()) from inventory::submit! closures. Additive fields must carry defaults so the spread form keeps working without a breaking change.

Fields

cpu_ref: fn(&[u8], &mut Vec<u8>)

Portable CPU reference implementation.

primary_text: Option<fn(&LoweringCtx<'_>) -> Result<(), String>>

Primary text builder. None in v0.4.1 pure-IR ops.

primary_binary: Option<fn(&LoweringCtx<'_>) -> Vec<u32>>

Primary binary builder. None in v0.4.1 pure-IR ops.

secondary_text: Option<fn(&LoweringCtx<'_>) -> TextModule>

Secondary text builder. None unless a concrete backend owns it.

native_module: Option<fn(&LoweringCtx<'_>) -> NativeModule>

Native native-module builder. None until native-module support lands.

extensions: HashMap<&'static str, fn(&LoweringCtx<'_>) -> Result<Vec<u8>, String>, FxBuildHasher>

Open extension map for out-of-tree backends. Keyed by backend id (matches the string a VyreBackend::id returns). Builders are by-value function pointers so lookup is allocation-free and the map stays Clone + Send + Sync without interior locking.

Implementations

impl LoweringTable

pub fn new(cpu_ref: fn(&[u8], &mut Vec<u8>)) -> LoweringTable

Build a lowering table with only the explicit CPU reference oracle populated. Production execution still requires a concrete backend lowering (primary_*, secondary_text, native_module, or an extension); this constructor is for parity/conformance surfaces and incremental backend registration.

pub fn empty() -> LoweringTable

Empty table whose reference-oracle slot is the structured-intrinsic sentinel. Invoking that slot panics after clearing output so missing reference adapters cannot masquerade as empty CPU results. This is not a production fallback path.

pub fn with_extension( self, backend_id: &'static str, builder: fn(&LoweringCtx<'_>) -> Result<Vec<u8>, String>, ) -> LoweringTable

Register an out-of-tree backend’s lowering. Stable backend id is the key DialectRegistry::get_lowering uses for lookup; pick it carefully, it is a wire-like identifier.

pub fn extension( &self, backend_id: &str, ) -> Option<fn(&LoweringCtx<'_>) -> Result<Vec<u8>, String>>

Look up an extension builder by backend id.

Trait Implementations

impl Clone for LoweringTable

fn clone(&self) -> LoweringTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LoweringTable

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

Formats the value using the given formatter.

impl Default for LoweringTable

fn default() -> LoweringTable

Returns the “default value” for a type.