downgrade method

SemanticVersion downgrade({ bool downgradeMajor = false, bool downgradeMinor = false, bool downgradePatch = false, })

Returns a new SemanticVersion that is downgraded from this.

At a minimum, the pre-release version will be removed. Other downgrades can be applied by specifying any of downgradeMajor, downgradeMinor, and downgradePatch, which will decrement the value of their respective version part by one (unless the value is already 0).

This method may return a version equal to this if no downgrade options are specified.

Implementation

SemanticVersion downgrade({
  bool downgradeMajor = false,
  bool downgradeMinor = false,
  bool downgradePatch = false,
}) {
  var major = this.major;
  var minor = this.minor;
  var patch = this.patch;
  if (downgradeMajor) {
    major = math.max(0, major - 1);
  }
  if (downgradeMinor) {
    minor = math.max(0, minor - 1);
  }
  if (downgradePatch) {
    patch = math.max(0, patch - 1);
  }
  return SemanticVersion(
    major: major,
    minor: minor,
    patch: patch,
  );
}