Method parse

basex-core/src/main/java/org/basex/query/value/item/Dec.java:190–222

Converts the given token into a decimal value. @param value value to be converted @param info input info (can be null) @param error raise error for an invalid input @return decimal, or null value is invalid and no error is raised @throws QueryException query exception

(final byte[] value, final InputInfo info,
      final boolean error)

   * @throws QueryException query exception
   */
  public static BigDecimal parse(final byte[] value, final InputInfo info,
      final boolean error) throws QueryException {

    // check if conversion can be successful (reject exponential notation)
    boolean valid = value.length != 0, dot = false;
    if(valid) {
      for(final byte v : value) {
        if(v == '.') {
          dot = true;
        } else if(!(digit(v) || ws(v) || v == '+' || v == '-')) {
          valid = false;
          break;
        }
      }
    }

    if(valid) {
      // shortcut for non-fractional values
      if(!dot) {
        final long l = toLong(value);
        if(l != Long.MIN_VALUE) return BigDecimal.valueOf(l);
      }
      // decimal conversion
      try {
        return new BigDecimal(Token.string(value).trim());
      } catch(final NumberFormatException ex) {
        Util.debug(ex);
      }
    }

    if(error) throw BasicType.DECIMAL.castError(value, info);
    return null;
  }
}