Struct SchemaResolver 

pub struct SchemaResolver<'a> { /* private fields */ }

The engine’s schema-pin resolver — the single named entry point a load path resolves a name@version pin through. Consults schema sources in a fixed order: local storage (the mem’s own storage backend — folder .memstead/schemas/ or the git-branch __MEMSTEAD:schemas/ ref, layered first into the catalogue so it wins on (name, version) collision), built-in (compiled into the binary), remote (memstead.io, reserved, not implemented). The order is fixed in code — local-over-built-in by the catalogue’s insertion precedence, remote always last. On a miss it yields the per-source [SchemaSourceDiagnostic] trail the SCHEMA_NOT_FOUND envelope carries.

Holds a borrowed view of the merged catalogue (local ⧺ built-in) the boot / register paths assemble, so resolution allocates nothing.

Implementations

impl<'a> SchemaResolver<'a>

pub fn new(catalogue: &'a [Arc<Schema>]) -> Self

Wrap the merged resolution catalogue (workspace-authored schemas layered over the built-in set, local winning on collision).

pub fn resolve( &self, pin: &SchemaRef, ) -> Result<Arc<Schema>, Vec<SchemaSourceDiagnostic>>

Resolve a pin to its schema, or the fixed-order source diagnostics on a miss (fed straight into EngineError::SchemaNotFound’s sources).