rudof_wasm

wasm-bindgen bindings that expose rudof's SHACL stack to JavaScript. A single stateful Session owns the current RDF data graph plus the loaded shapes, and offers parsing, graph editing, serialization, projection and SHACL validation — all running in WebAssembly, no SPARQL endpoint or threads required.

Values cross the boundary as plain JSON via serde-wasm-bindgen: RDF terms as TermValue records, shapes as a vocabulary-agnostic ShapeModelJson, and validation as a RudofReport. See src/dto.rs for the full contract.

Build

./build.sh   # → ./pkg  (wasm-bindgen --target web; size-optimized, wasm-opt -Oz)

Requires the wasm32-unknown-unknown target, wasm-bindgen-cli, and optionally wasm-opt (binaryen). The crate builds shacl/rudof_rdf with default-features = false: that path is wasm-clean and runs the native validation engine (the sparql feature, which needs an endpoint, is off).

API

const session = new Session();
session.loadShapes(shaclTurtle, "text/turtle"); // → ShapeModelJson
session.loadData(dataTurtle, "text/turtle");
session.add(subject, predicate, object);        // live graph editing
const form = session.projectForm(focus, shapeId);
const report = session.validate(null);           // { conforms, results }
const ttl = session.serialize("text/turtle");

Notes

• SHACL validation uses the native engine over an in-memory graph. Shapes are validated sequentially on wasm (no rayon/threads), in parallel elsewhere.
• projectForm evaluates each property path of a node shape from a focus node, preserving value order (forms need deterministic ordering).