pub fn read(src: &[u8]) -> Result<(StepModel, Report), Error>Expand description
Read STEP source into the schema-faithful model, returning a provenance
Report.
The generated read is per-entity fallible: an entity whose own attributes the
strict reader cannot consume is dropped (reason recorded), never panicking.
A read failure pre-drops that entity in the next drop_pass, so its referrers
cascade through the same engine. The loop is bounded and converges in ≤2 real
iterations (own-attr readability is graph-independent, so all failures surface
in the first build; the second drop_pass cascades them to a clean set).
§Errors
Returns a Error only if the source does not parse. A parsed source
never fails the read: a malformed entity is dropped with a reason in
Report::dropped (the generated read is structurally panic-free).