X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs-website;a=blobdiff_plain;f=vendor%2Fsymfony%2Fserializer%2FEncoder%2FYamlEncoder.php;fp=vendor%2Fsymfony%2Fserializer%2FEncoder%2FYamlEncoder.php;h=3ac1af679a4a1a43f97a5ea0136ad681cc96fd7a;hp=41ac04f2091057ed19bb5250ded52e96155b1717;hb=af6d1fb995500ae68849458ee10d66abbdcfb252;hpb=680c79a86e3ed402f263faeac92e89fb6d9edcc0

diff --git a/vendor/symfony/serializer/Encoder/YamlEncoder.php b/vendor/symfony/serializer/Encoder/YamlEncoder.php
index 41ac04f20..3ac1af679 100644
--- a/vendor/symfony/serializer/Encoder/YamlEncoder.php
+++ b/vendor/symfony/serializer/Encoder/YamlEncoder.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Serializer\Encoder;
 
+use Symfony\Component\Serializer\Exception\RuntimeException;
 use Symfony\Component\Yaml\Dumper;
 use Symfony\Component\Yaml\Parser;
 
@@ -29,6 +30,10 @@ class YamlEncoder implements EncoderInterface, DecoderInterface
 
     public function __construct(Dumper $dumper = null, Parser $parser = null, array $defaultContext = array())
     {
+        if (!class_exists(Dumper::class)) {
+            throw new RuntimeException('The YamlEncoder class requires the "Yaml" component. Install "symfony/yaml" to use it.');
+        }
+
         $this->dumper = $dumper ?: new Dumper();
         $this->parser = $parser ?: new Parser();
         $this->defaultContext = array_merge($this->defaultContext, $defaultContext);