Added new functions (currentDateTime and formatNumber)

Author: sebprt

src/CurrentDateTime.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Kiboko\Component\StringExpressionLanguage;
+
+use Symfony\Component\ExpressionLanguage\ExpressionFunction;
+
+class CurrentDateTime extends ExpressionFunction
+{
+    public function __construct($name)
+    {
+        parent::__construct(
+            $name,
+            \Closure::fromCallable([$this, 'compile'])->bindTo($this),
+            \Closure::fromCallable([$this, 'evaluate'])->bindTo($this)
+        );
+    }
+
+    private function compile(string $timezone = null)
+    {
+        return <<<PHP
+            (new \DateTime('now', {$timezone} !== null ? new \DateTimeZone({$timezone}) : null))
+        PHP;
+    }
+
+    private function evaluate(array $context, string $timezone = null)
+    {
+        return new \DateTime('now', $timezone !== null ? new \DateTimeZone($timezone) : null);
+    }
+}

src/StringExpressionLanguageProvider.php

@@ -16,10 +16,12 @@ public function getFunctions(): array
             ExpressionFunction::fromPhp('strtolower', 'toLowerCase'),
             ExpressionFunction::fromPhp('substr', 'search'),
             ExpressionFunction::fromPhp('strtoupper', 'toUpperCase'),
+            ExpressionFunction::fromPhp('number_format', 'formatNumber'),
             new FileName('fileName'),
             new DateTime('dateTime'),
             new FormatDate('formatDate'),
             new TruncateFileName('truncateFileName'),
+            new CurrentDateTime('currentDateTime'),
         ];
     }
 }