TASK: Refactor code

* As we sometimes have to fix classnames inside a string, move this
  common work to trait.
* Also make classname "free" of string quotes inside the check, not the
  concrete sniffs.

src/Standards/Typo3Update/Sniffs/LegacyClassnames/ClassnameCheckerTrait.php

@@ -139,7 +139,7 @@ trait ClassnameCheckerTrait
      */
     public function addFixableError(PhpcsFile $phpcsFile, $classnamePosition, $classname)
     {
-        $classname = trim($classname, '\\');
+        $classname = trim($classname, '\\\'"'); // Remove trailing slash, and quotes.
         $this->addMaybeWarning($phpcsFile, $classnamePosition, $classname);
 
         if ($this->isLegacyClassname($classname) === false) {
@@ -210,4 +210,26 @@ trait ClassnameCheckerTrait
     {
         return $classname;
     }
+
+    /**
+     * Use this inside your getTokenForReplacement if $classname is inside a string.
+     * Strings will be converted to single quotes.
+     *
+     * @param string $classname
+     * @return string
+     */
+    protected function getTokenReplacementForString($classname)
+    {
+        $stringSign = $this->originalTokenContent[0];
+        $token = explode($stringSign, $this->originalTokenContent);
+        $token[1] = $classname;
+
+        // Migrate double quote to single quote.
+        // This way no escaping of backslashes in class names is necessary.
+        if ($stringSign === '"') {
+            $stringSign = "'";
+        }
+
+        return implode($stringSign, $token);
+    }
 }

src/Standards/Typo3Update/Sniffs/LegacyClassnames/InstantiationWithMakeInstanceSniff.php

@@ -70,7 +70,7 @@ class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithMakeInstanceSniff imp
             return;
         }
 
-        $classname = trim($tokens[$classnamePosition]['content'], '\'"');
+        $classname = $tokens[$classnamePosition]['content'];
         $this->originalTokenContent = $tokens[$classnamePosition]['content'];
         $this->addFixableError($phpcsFile, $classnamePosition, $classname);
     }
@@ -83,16 +83,6 @@ class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithMakeInstanceSniff imp
      */
     protected function getTokenForReplacement($classname)
     {
-        $stringSign = $this->originalTokenContent[0];
+        return $this->getTokenReplacementForString($classname);
-        $token = explode($stringSign, $this->originalTokenContent);
-        $token[1] = $classname;
-
-        // Migrate double quote to single quote.
-        // This way no escaping of backslashes in class names is necessary.
-        if ($stringSign === '"') {
-            $stringSign = "'";
-        }
-
-        return implode($stringSign, $token);
     }
 }

src/Standards/Typo3Update/Sniffs/LegacyClassnames/InstantiationWithObjectManagerSniff.php

@@ -74,7 +74,7 @@ class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithObjectManagerSniff im
             );
         }
 
-        $classname = trim($tokens[$classnamePosition]['content'], '\'"');
+        $classname = $tokens[$classnamePosition]['content'];
         $this->originalTokenContent = $tokens[$classnamePosition]['content'];
         $this->addFixableError($phpcsFile, $classnamePosition, $classname);
     }
@@ -87,16 +87,6 @@ class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithObjectManagerSniff im
      */
     protected function getTokenForReplacement($classname)
     {
-        $stringSign = $this->originalTokenContent[0];
+        return $this->getTokenReplacementForString($classname);
-        $token = explode($stringSign, $this->originalTokenContent);
-        $token[1] = $classname;
-
-        // Migrate double quote to single quote.
-        // This way no escaping of backslashes in class names is necessary.
-        if ($stringSign === '"') {
-            $stringSign = "'";
-        }
-
-        return implode($stringSign, $token);
     }
 }