Dart Mexican CURP Validation

curp.dart

void main() {
    var res = CURP.curpValida('XXXXXXXXXXXXX');
    print("Result:" + res.toString());
}


class CURP {


  static bool curpValida(String curp) {
      var re = new RegExp(r"^([A-Z][AEIOUX][A-Z]{2}\d{2}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\d|3[01])[HM](?:AS|B[CS]|C[CLMSH]|D[FG]|G[TR]|HG|JC|M[CNS]|N[ETL]|OC|PL|Q[TR]|S[PLR]|T[CSL]|VZ|YN|ZS)[B-DF-HJ-NP-TV-Z]{3}[A-Z\d])(\d)$",
  caseSensitive: false,
  multiLine: false,                          
      );
      var validado = re.allMatches(curp);
    
      var matches = validado.toList();
      if (matches.length == 0)  //Coincide con el formato general?
      {
        print("CURP No matches with RegEx");
        return false;
      }
    
    	print(matches[0][2].toString());
      var digitVerif = matches[0][2].toString();
			var digitoVerifCalculado = digitoVerificador(matches[0][1].toString()).toString();
    
      if (digitoVerifCalculado != digitVerif) {
        print("Digito verificador CURP  digito: " + matches[2].toString() +" calculado:" + digitVerif);
        return false;
      }
          
      return true; 
  }

  //Validar que coincida el dígito verificador
  static digitoVerificador(curp17) {
      //Fuente https://consultas.curp.gob.mx/CurpSP/
      var diccionario  = "0123456789ABCDEFGHIJKLMNÑOPQRSTUVWXYZ",
          lngSuma      = 0.0,
          lngDigito    = 0.0;
      for(var i=0; i<17; i++)
          lngSuma = lngSuma + diccionario.indexOf(curp17[i]) * (18 - i);
      lngDigito = 10 - lngSuma % 10;
      if (lngDigito == 10) return 0;
      return lngDigito;
  }
}