sct-ecl

The SNOMED CT Expression Constraint Language.

A logos lexer and a winnow parser faithful to the official ECL ANTLR grammar (the ECL specification), a syntax tree named after the grammar's rules, a printer whose output parses back to the same tree, and an evaluator that compiles a constraint to set algebra over a concept-graph.

Where it sits

sct-ecl is one crate of FerroTERM, a pure-Rust FHIR terminology server for SNOMED CT, LOINC, and other clinical code systems. The crates are published so other projects can reuse them; the API is pre-1.0 and moves with the FerroTERM release train. Documentation: https://docs.rs/sct-ecl.

Licence

Apache License, Version 2.0 (LICENSE). Clinical terminology content (SNOMED CT, LOINC, RxNorm, ICD, the Dutch national code systems) is licensed by its publisher and is never part of this crate.