ofString static method

LogicValue ofString(String stringRepresentation)

Converts a binary String representation of a LogicValue into a LogicValue.

The stringRepresentation should only contain bit values (e.g. no 0b at the start). The order of the created LogicValue will be such that the ith character in stringRepresentation corresponds to the length - i - 1th bit. That is, the last character of stringRepresentation will be the 0th bit of the returned LogicValue.

var stringRepresentation = '1x0';
var lv = LogicValue.ofString(stringRepresentation);
print(lv); // This prints `3b'1x0`

Implementation

static LogicValue ofString(String stringRepresentation) {
  if (stringRepresentation.isEmpty) {
    return const _FilledLogicValue(_LogicValueEnum.zero, 0);
  }

  if (stringRepresentation.contains(RegExp('[^01xz]'))) {
    throw LogicValueConstructionException(
        'Invalid characters found, must only contain 0, 1, x, and z.');
  }

  final valueString = _valueString(stringRepresentation);
  final invalidString = _invalidString(stringRepresentation);
  final width = stringRepresentation.length;

  if (width <= INT_BITS) {
    final value = _unsignedBinaryParse(valueString);
    final invalid = _unsignedBinaryParse(invalidString);
    return _smallLogicValueOrFilled(value, invalid, width);
  } else {
    final value = BigInt.parse(valueString, radix: 2);
    final invalid = BigInt.parse(invalidString, radix: 2);
    return _bigLogicValueOrFilled(value, invalid, width);
  }
}