Method resolveOperatorInterval

engine/temporal.go:247–262

resolveOperatorInterval converts an operator interval (with durations) to absolute timestamps. For past operators, durations are interpreted as offsets from the evaluation time.

(interval ast.Interval)

// resolveOperatorInterval converts an operator interval (with durations) to absolute timestamps.
// For past operators, durations are interpreted as offsets from the evaluation time.
func (te *TemporalEvaluator) resolveOperatorInterval(interval ast.Interval) (ast.Interval, error) {
	start, err := te.resolveBound(interval.Start, true) // true = past operator
	if err != nil {
		return ast.Interval{}, err
	}

	end, err := te.resolveBound(interval.End, true)
	if err != nil {
		return ast.Interval{}, err
	}

	// For past operators with duration bounds, the semantics are:
	// <-[0d, 7d] means "from 7 days ago to now"
	// So start should be the larger duration (further in past) and end the smaller
	return ast.NewInterval(end, start), nil // Note: swapped because past operators
}

// resolveBound converts a temporal bound to an absolute timestamp.
func (te *TemporalEvaluator) resolveBound(bound ast.TemporalBound, isPast bool) (ast.TemporalBound, error) {