frontend and backend

backend/src/Service/PregSplit.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\PregResponse;
+use App\Resource\Flags;
+
+/**
+ * Handler form preg_split() function.
+ * @see preg_split()
+ */
+class PregSplit extends PregFunction
+{
+    protected array $availableFlags = [Flags::PREG_SPLIT_NO_EMPTY, Flags::PREG_SPLIT_DELIM_CAPTURE, Flags::PREG_SPLIT_OFFSET_CAPTURE];
+
+    public function exec(): PregResponse
+    {
+        $ret = preg_split($this->dto->pattern, $this->dto->subject, $this->dto->limit ?? -1, $this->flags);
+
+        return new PregResponse(
+               $ret,
+               $this->syntax(),
+            ...$this->result($ret)
+        );
+    }
+
+    protected function syntax(): string
+    {
+        $method = $this->dto->method->value;
+        $args = [$method .'("'. $this->dto->pattern.'"'];
+
+        $args[] = $this->cropString($this->dto->subject);
+
+        if (!\is_null($this->dto->limit)) {
+            $args[] = $this->dto->limit;
+        }
+
+        if (\count($this->flagsStr)) {
+            $args[] = (\is_null($this->dto->limit)? 'null, ': ''). implode(' | ', $this->flagsStr);
+        }
+
+
+        $code = implode(", ", $args). ");";
+
+        return $this->syntaxCleanup($code);
+    }
+}