execute method

@override List execute(List results, Map<String, dynamic> passed)

The iterable, nested function that evaluates the entire FHIRPath expression one object at a time

Implementation

@override
List execute(List results, Map<String, dynamic> passed) {
  final executedValue = value.length == 1 && value.first is IdentifierParser
      ? [value.first]
      : value.execute(results.toList(), passed);
  if (executedValue.length != 1) {
    throw FhirPathEvaluationException(
      'The "ofType" function requires an argument that '
      'resolves to 1 item but was passed the following:',
      operation: 'ofType',
      arguments: executedValue,
      collection: results,
    );
  }
  final finalResults = [];
  results.forEach((e) {
    if (((passed.isVersion(FhirVersion.r4)
                ? r4.resourceTypeFromStringMap.keys
                    .contains((executedValue.first as IdentifierParser).value)
                : passed.isVersion(FhirVersion.r5)
                    ? r5.resourceTypeFromStringMap.keys.contains(
                        (executedValue.first as IdentifierParser).value)
                    : passed.isVersion(FhirVersion.dstu2)
                        ? dstu2.resourceTypeFromStringMap.keys.contains(
                            (executedValue.first as IdentifierParser).value)
                        : stu3.resourceTypeFromStringMap.keys.contains(
                            (executedValue.first as IdentifierParser).value,
                          )) &&
            e is Map &&
            e['resourceType'] ==
                (executedValue.first as IdentifierParser).value) ||
        ((executedValue.first as IdentifierParser).value == 'string' &&
            (e is String)) ||
        ((executedValue.first as IdentifierParser).value == 'boolean' &&
            (e is bool || e is FhirBoolean)) ||
        ((executedValue.first as IdentifierParser).value == 'integer' &&
            (e is int || e is FhirInteger) &&
            !e.toString().contains('.')) ||
        ((executedValue.first as IdentifierParser).value == 'decimal' &&
            (e is double || e is FhirDecimal) &&
            e.toString().contains('.')) ||
        ((executedValue.first as IdentifierParser).value == 'date' &&
            e is FhirDate) ||
        ((executedValue.first as IdentifierParser).value == 'datetime' &&
            (e is DateTime || e is FhirDateTime)) ||
        ((executedValue.first as IdentifierParser).value == 'time' &&
            e is FhirTime) ||
        ((executedValue.first as IdentifierParser).value == 'quantity' &&
            e is FhirPathQuantity)) {
      finalResults.add(e);
    }
  });
  return finalResults;
}