Create legacy class instead of method to improve performance

src/FileStorage.php

@@ -16,6 +16,7 @@
 use Symfony\Component\Translation\MessageCatalogueInterface;
 use Symfony\Component\Translation\Reader\TranslationReader;
 use Symfony\Component\Translation\Writer\TranslationWriter;
+use Symfony\Component\Translation\Writer\TranslationWriterInterface;
 use Translation\Common\Model\Message;
 use Translation\Common\Storage;
 use Translation\Common\TransferableStorage;
@@ -28,7 +29,7 @@
 final class FileStorage implements Storage, TransferableStorage
 {
     /**
-     * @var TranslationWriter
+     * @var TranslationWriterInterface|LegacyTranslationWriter
      */
     private $writer;
 
@@ -60,6 +61,10 @@ final class FileStorage implements Storage, TransferableStorage
      */
     public function __construct(TranslationWriter $writer, $loader, array $dir, array $options = [])
     {
+        // Create a legacy writer which is a wrapper for TranslationWriter
+        if (!$writer instanceof TranslationWriterInterface) {
+            $writer = new LegacyTranslationWriter($writer);
+        }
         // Create a legacy loader which is a wrapper for TranslationReader
         if ($loader instanceof TranslationReader) {
             $loader = new LegacyTranslationLoader($loader);
@@ -164,7 +169,7 @@ private function writeCatalogue(MessageCatalogue $catalogue, $locale, $domain)
             $path = (string) $resource;
             if (preg_match('|/'.$domain.'\.'.$locale.'\.([a-z]+)$|', $path, $matches)) {
                 $options['path'] = str_replace($matches[0], '', $path);
-                $this->writeTranslations($catalogue, $matches[1], $options);
+                $this->writer->write($catalogue, $matches[1], $options);
                 $written = true;
             }
         }
@@ -176,7 +181,7 @@ private function writeCatalogue(MessageCatalogue $catalogue, $locale, $domain)
 
         $options['path'] = reset($this->dir);
         $format = isset($options['default_output_format']) ? $options['default_output_format'] : 'xlf';
-        $this->writeTranslations($catalogue, $format, $options);
+        $this->writer->write($catalogue, $format, $options);
     }
 
     /**
@@ -210,23 +215,4 @@ private function loadCatalogue($locale, array $dirs)
 
         $this->catalogues[$locale] = $currentCatalogue;
     }
-
-    /**
-     * This method calls the new TranslationWriter::write() if exist,
-     * otherwise fallback to TranslationWriter::writeTranslations() call
-     * to avoid BC breaks.
-     *
-     * @param MessageCatalogue $catalogue
-     * @param string           $format
-     * @param array            $options
-     */
-    private function writeTranslations(MessageCatalogue $catalogue, $format, array $options)
-    {
-        if (method_exists($this->writer, 'write')) {
-            $this->writer->write($catalogue, $format, $options);
-        } else {
-            // This method is deprecated since 3.4, maintained to avoid BC breaks
-            $this->writer->writeTranslations($catalogue, $format, $options);
-        }
-    }
 }

src/LegacyTranslationLoader.php

@@ -16,7 +16,7 @@
 
 /**
  * This loader is just a legacy wrapper for Symfony TranslationReader
- * and provider a BC layer for Symfony 4.
+ * and provide a BC layer for Symfony 4.
  *
  * @author Victor Bocharsky <bocharsky.bw@gmail.com>
  */

src/LegacyTranslationWriter.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the PHP Translation package.
+ *
+ * (c) PHP Translation team <tobias.nyholm@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Translation\SymfonyStorage;
+
+use Symfony\Component\Translation\MessageCatalogue;
+use Symfony\Component\Translation\Writer\TranslationWriter;
+
+/**
+ * This writer is just a legacy wrapper for Symfony TranslationWriter
+ * and provide a BC layer for Symfony 4.
+ *
+ * @author Victor Bocharsky <bocharsky.bw@gmail.com>
+ */
+class LegacyTranslationWriter
+{
+    /**
+     * @var TranslationWriter
+     */
+    private $writer;
+
+    public function __construct(TranslationWriter $writer)
+    {
+        $this->writer = $writer;
+    }
+
+    public function write(MessageCatalogue $catalogue, $format, $options = [])
+    {
+        $this->writer->writeTranslations($catalogue, $format, $options);
+    }
+}