Function NewExecutionSegmentSequenceFromString

lib/execution_segment.go:324–355

NewExecutionSegmentSequenceFromString parses strings of the format "r1,r2,r3,...,rn", which represents the sequences like (r1, r2], (r2, r3], (r3, r4], ..., (r{n-1}, rn].

(strSeq string)

// "r1,r2,r3,...,rn", which represents the sequences like (r1, r2], (r2, r3],
// (r3, r4], ..., (r{n-1}, rn].
func NewExecutionSegmentSequenceFromString(strSeq string) (ExecutionSegmentSequence, error) {
	if len(strSeq) == 0 {
		return nil, nil
	}

	points := strings.Split(strSeq, ",")
	if len(points) < 2 {
		return nil, fmt.Errorf("at least 2 points are needed for an execution segment sequence, %d given", len(points))
	}
	var start *big.Rat

	segments := make([]*ExecutionSegment, 0, len(points)-1)
	for i, point := range points {
		rat, err := stringToRat(point)
		if err != nil {
			return nil, err
		}
		if i == 0 {
			start = rat
			continue
		}

		segment, err := NewExecutionSegment(start, rat)
		if err != nil {
			return nil, err
		}
		segments = append(segments, segment)
		start = rat
	}

	return NewExecutionSegmentSequence(segments...)
}

// UnmarshalText implements the encoding.TextUnmarshaler interface, so that
// execution segment sequences can be specified as CLI flags, environment