@synanetics/fhir-fml-convert/dist/index.js

Converts StructureMaps written in FML to JSON ($convert operation)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const antlr4ts_1 = require("antlr4ts");
const FhirMapperLexer_1 = require("./generated/FhirMapperLexer");
const FhirMapperParser_1 = require("./generated/FhirMapperParser");
const StructureMapVisitorSTU3_1 = require("./StructureMapVisitorSTU3");
const StructureMapVisitorR5_1 = require("./StructureMapVisitorR5");
const StructureMapVisitorR4_1 = require("./StructureMapVisitorR4");
/**
 * Converts the supplied FML into a FHIR StructureMap, according the the [ANTLR grammar](https://www.hl7.org/fhir/mapping.g4)
 * @param fml The FML string
 * @param options Options for performing the conversion, such as the desired FHIR version of the
 * resultant StructureMap.
 * @returns A deserialised FHIR StructureMap resource.
 */
function convert(fml, options) {
    const input = antlr4ts_1.CharStreams.fromString(fml);
    const lexer = new FhirMapperLexer_1.FhirMapperLexer(input);
    lexer.removeErrorListeners();
    // @ts-ignore
    const tokens = new antlr4ts_1.CommonTokenStream(lexer);
    const parser = new FhirMapperParser_1.FhirMapperParser(tokens);
    parser.removeErrorListeners();
    const tree = parser.structureMap();
    let visitor;
    const version = options?.fhirVersion ?? 'R4';
    switch (version) {
        case 'STU3':
            visitor = new StructureMapVisitorSTU3_1.StructureMapVisitorSTU3();
            break;
        case 'R5':
            visitor = new StructureMapVisitorR5_1.StructureMapVisitorR5();
            break;
        case 'R4':
            visitor = new StructureMapVisitorR4_1.StructureMapVisitorR4();
            break;
        default:
            throw new Error(`Unsupported FHIR version from options.fhirVersion: ${version}`);
    }
    return visitor.visit(tree);
}
exports.default = convert;
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