Added ability for occurrences to specify how they interact with regular hours.

src/OhOccurrence.php

@@ -12,6 +12,16 @@ class OhOccurrence extends OhDateRange implements RefinableCacheableDependencyIn
 
   use RefinableCacheableDependencyTrait;
 
+  /**
+   * Informs regular hours for the same day should be voided.
+   */
+  public const REGULAR_HOUR_INTERACTION_VOID_REGULAR = 0b1;
+
+  /**
+   * Informs this occurrence will not trigger regular hours to be voided.
+   */
+  public const REGULAR_HOUR_INTERACTION_NO_VOID_REGULAR = 0b0;
+
   /**
    * Message to add to the occurrence.
    *
@@ -26,6 +36,13 @@ class OhOccurrence extends OhDateRange implements RefinableCacheableDependencyIn
    */
   protected $open = FALSE;
 
+  /**
+   * Regular hours interaction behaviour.
+   *
+   * @var int
+   */
+  protected $regularHourInteraction = self::REGULAR_HOUR_INTERACTION_NO_VOID_REGULAR;
+
   /**
    * Add a message for the occurrence.
    *
@@ -88,6 +105,32 @@ class OhOccurrence extends OhDateRange implements RefinableCacheableDependencyIn
     return $this->open;
   }
 
+  /**
+   * Sets interaction behaviour with regular hours.
+   *
+   * Note: it only takes one exception to trigger voiding.
+   *
+   * @param int $value
+   *   Interaction constant. See static::REGULAR_HOUR_INTERACTION_*.
+   *
+   * @return $this
+   *   Return object for chaining.
+   */
+  public function setRegularHourInteraction(int $value = self::REGULAR_HOUR_INTERACTION_NO_VOID_REGULAR) {
+    $this->regularHourInteraction = $value;
+    return $this;
+  }
+
+  /**
+   * Get interaction behaviour with regular hours.
+   *
+   * This method should only be used by exceptions, not regular hours.
+   *
+   * @return mixed
+   *   Interaction constant. See static::REGULAR_HOUR_INTERACTION_*.
+   */
+  public function getRegularHourInteraction(): int {
+    return $this->regularHourInteraction;
   }
 
   /**

src/OhOpeningHours.php

@@ -54,6 +54,9 @@ class OhOpeningHours implements OhOpeningHoursInterface {
     if ($exceptions) {
       foreach ($exceptions as $exception) {
         $dayKey = $exception->getStart()->format(static::DAY_FORMAT);
+        if (!$exception->getRegularHourInteraction() & OhOccurrence::REGULAR_HOUR_INTERACTION_VOID_REGULAR) {
+          continue;
+        }
 
         // Remove any regular hour occurrences on the same day as exceptions.
         $occurrences = array_filter($occurrences, function (OhOccurrence $occurrence) use ($dayKey) {