1 files changed, 52 insertions, 0 deletions
diff --git a/vendor/dragonmantank/cron-expression/src/Cron/FieldFactory.php b/vendor/dragonmantank/cron-expression/src/Cron/FieldFactory.php
new file mode 100644
index 0000000..839b275
--- /dev/null
+++ b/vendor/dragonmantank/cron-expression/src/Cron/FieldFactory.php
@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Cron;
+
+use InvalidArgumentException;
+
+/**
+ * CRON field factory implementing a flyweight factory.
+ *
+ * @see http://en.wikipedia.org/wiki/Cron
+ */
+class FieldFactory implements FieldFactoryInterface
+{
+    /**
+     * @var array Cache of instantiated fields
+     */
+    private $fields = [];
+
+    /**
+     * Get an instance of a field object for a cron expression position.
+     *
+     * @param int $position CRON expression position value to retrieve
+     *
+     * @throws InvalidArgumentException if a position is not valid
+     */
+    public function getField(int $position): FieldInterface
+    {
+        return $this->fields[$position] ?? $this->fields[$position] = $this->instantiateField($position);
+    }
+
+    private function instantiateField(int $position): FieldInterface
+    {
+        switch ($position) {
+            case CronExpression::MINUTE:
+                return new MinutesField();
+            case CronExpression::HOUR:
+                return new HoursField();
+            case CronExpression::DAY:
+                return new DayOfMonthField();
+            case CronExpression::MONTH:
+                return new MonthField();
+            case CronExpression::WEEKDAY:
+                return new DayOfWeekField();
+        }
+
+        throw new InvalidArgumentException(
+            ($position + 1) . ' is not a valid position'
+        );
+    }
+}