Merge pull request #39 from DanielSiepmann/feature/36-namespace-migration

Feature/36 namespace migration

Readme.rst

@@ -49,6 +49,8 @@ new ones like ``\TYPO3\Extbase\...``. This is done for:
 
 - Static calls like ``t3lib_div::`` to ``\TYPO3\Core\Utility\GeneralUtility``.
 
+- Static call also checks for ``::class``, as technically we just look before the ``::``.
+
 - Typehints in methods and function like injects.
 
 - ``instanceof`` checks.
@@ -69,6 +71,30 @@ new ones like ``\TYPO3\Extbase\...``. This is done for:
 
 - ``catch`` of legacy class names.
 
+- Convert old legacy class *definitions* in extensions to namespaces.
+
+- Convert usage of previously converted class definitions. On first run the definition will be
+  converted, on second run the usage. This is due to the fact, that PHPCS might find the definition
+  after the usage, so please run twice.
+
+  *NOTE* The configured file will be updated after each run, for each converted class, trait and
+  interface definition. See options.
+
+- Add missing vendor to plugin and module registrations and configurations.
+  You might want to set this to non fixable and warning if you already provide the vendor inside a
+  single Variable, together with your extension key, as this is not recognized. So the following
+  will be recognized:
+
+  - ``$_EXTKEY,``
+
+  - ``$VENDOR . $_EXTKEY,``
+
+  - ``'VENDOR.' . $_EXTKEY,``
+
+  While the following will not:
+
+  - ``$key = 'Vendor.' . $_EXTKEY;``
+
 Also we check for the following deprecated calls:
 
 - Check for ``create`` on ``ObjectManager``, which is "stupid" just all ``create`` calls are marked
@@ -152,3 +178,19 @@ Example:
 .. code:: bash
 
     --runtime-set mappingFile /projects/typo3_installation/vendor/composer/autoload_classaliasmap.php
+
+``vendor``
+    Configure your vendor through ``ruleset.xml`` or using ``--runtime-set``. Default is
+    ``YourCompany``.
+
+    Example:
+
+.. code:: xml
+
+    <config name="vendor" value="YourVendor"/>
+
+Example:
+
+.. code:: bash
+
+    --runtime-set vendor YourVendor

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

@@ -22,17 +22,16 @@ namespace Typo3Update\Sniffs\LegacyClassnames;
 
 use PHP_CodeSniffer as PhpCs;
 use PHP_CodeSniffer_File as PhpCsFile;
+use PHP_CodeSniffer_Sniff as PhpCsSniff;
+use Typo3Update\Sniffs\LegacyClassnames\Mapping;
+use Typo3Update\Sniffs\OptionsAccessTrait;
 
 /**
  * Provide common uses for all sniffs, regarding class name checks.
  */
-trait ClassnameCheckerTrait
+abstract class AbstractClassnameChecker implements PhpCsSniff
 {
-    /**
-     * Contains mapping from old -> new class names.
-     * @var array
-     */
-    private $legacyClassnames = [];
+    use OptionsAccessTrait;
 
     /**
      * A list of extension names that might contain legacy class names.
@@ -45,20 +44,22 @@ trait ClassnameCheckerTrait
     public $legacyExtensions = ['Extbase', 'Fluid'];
 
     /**
-     * Initialize, used internally, to not initialize if not needed inside __construct.
+     * @var Mapping
      */
-    private function initialize()
-    {
-        $mappingFile = PhpCs::getConfigData('mappingFile');
-        if (!$mappingFile) {
-            $mappingFile = __DIR__ . '/../../../../../LegacyClassnames.php';
-        }
-        if ($this->legacyClassnames !== []) {
-            return;
-        }
+    protected $legacyMapping;
 
-        $legacyClassnames = require $mappingFile;
-        $this->legacyClassnames = $legacyClassnames['aliasToClassNameMapping'];
+    /**
+     * Used by some sniffs to keep original token for replacement.
+     *
+     * E.g. when Token itself is a whole inline comment, and we just want to replace the classname within.
+     *
+     * @var string
+     */
+    protected $originalTokenContent = '';
+
+    public function __construct()
+    {
+        $this->legacyMapping = Mapping::getInstance();
     }
 
     /**
@@ -110,10 +111,9 @@ trait ClassnameCheckerTrait
      * @param string $classname
      * @return bool
      */
-    private function isLegacyClassname($classname)
+    protected function isLegacyClassname($classname)
     {
-        $this->initialize();
-        return isset($this->legacyClassnames[strtolower($classname)]);
+        return $this->legacyMapping->isLegacyClassname($classname);
     }
 
     /**
@@ -145,10 +145,23 @@ trait ClassnameCheckerTrait
      * @param string $classname
      * @return string
      */
-    private function getNewClassname($classname)
+    protected function getNewClassname($classname)
     {
-        $this->initialize();
-        return $this->legacyClassnames[strtolower($classname)];
+        return $this->legacyMapping->getNewClassname($classname);
+    }
+
+    /**
+     * Use to add new mappings found during parsing.
+     * E.g. in MissingNamespaceSniff old class definitions are fixed and a new mapping exists afterwards.
+     *
+     * @param string $legacyClassname
+     * @param string $newClassname
+     *
+     * @return void
+     */
+    protected function addLegacyClassname($legacyClassname, $newClassname)
+    {
+        $this->legacyMapping->addLegacyClassname($legacyClassname, $newClassname);
     }
 
     /**
@@ -206,11 +219,16 @@ trait ClassnameCheckerTrait
      * @param PhpCsFile $phpcsFile
      * @param int $classnamePosition
      * @param string $classname
+     * @param bool $forceEmptyPrefix Defines whether '\\' prefix should be checked or always be left out.
      */
-    private function replaceLegacyClassname(PhpCsFile $phpcsFile, $classnamePosition, $classname)
-    {
+    protected function replaceLegacyClassname(
+        PhpCsFile $phpcsFile,
+        $classnamePosition,
+        $classname,
+        $forceEmptyPrefix = false
+    ) {
         $prefix = '\\';
-        if ($phpcsFile->getTokens()[$classnamePosition -1]['code'] === T_NS_SEPARATOR) {
+        if ($forceEmptyPrefix || $phpcsFile->getTokens()[$classnamePosition -1]['code'] === T_NS_SEPARATOR) {
             $prefix = '';
         }
 

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

@@ -19,27 +19,22 @@
  * 02110-1301, USA.
  */
 
+use PHP_CodeSniffer_File as PhpCsFile;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
+
 /**
  * Migrate PHP Doc comments.
  *
  * E.g. annotations like @param or @return, see $allowedTags.
  */
-class Typo3Update_Sniffs_LegacyClassnames_DocCommentSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_DocCommentSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * The configured tags will be processed.
      * @var array<string>
      */
     public $allowedTags = ['@param', '@return', '@var'];
 
-    /**
-     * Original token content for reuse accross methods.
-     * @var string
-     */
-    protected $originalTokenContent = '';
-
     /**
      * Returns the token types that this sniff is interested in.
      *
@@ -55,13 +50,13 @@ class Typo3Update_Sniffs_LegacyClassnames_DocCommentSniff implements PHP_CodeSni
     /**
      * Processes the tokens that this sniff is interested in.
      *
-     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
+     * @param PhpCsFile $phpcsFile The file where the token was found.
      * @param int                  $stackPtr  The position in the stack where
      *                                        the token was found.
      *
      * @return void
      */
-    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
     {
         $tokens = $phpcsFile->getTokens();
         if (!in_array($tokens[$stackPtr]['content'], $this->allowedTags)) {

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

@@ -19,13 +19,14 @@
  * 02110-1301, USA.
  */
 
+use PHP_CodeSniffer_File as PhpCsFile;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
+
 /**
  * Detect and migrate extend and implement of old legacy classnames.
  */
-class Typo3Update_Sniffs_LegacyClassnames_InheritanceSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_InheritanceSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * Returns the token types that this sniff is interested in.
      *
@@ -38,4 +39,56 @@ class Typo3Update_Sniffs_LegacyClassnames_InheritanceSniff implements PHP_CodeSn
             T_IMPLEMENTS,
         ];
     }
+
+    /**
+     * Processes the tokens that this sniff is interested in.
+     *
+     * This is the default implementation, as most of the time next T_STRING is
+     * the class name. This way only the register method has to be registered
+     * in default cases.
+     *
+     * @param PhpCsFile $phpcsFile The file where the token was found.
+     * @param int                  $stackPtr  The position in the stack where
+     *                                        the token was found.
+     *
+     * @return void
+     */
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
+    {
+        if ($phpcsFile->getTokens()[$stackPtr]['code'] === T_IMPLEMENTS) {
+            $this->processInterfaces($phpcsFile, $stackPtr);
+            return;
+        }
+
+        parent::process($phpcsFile, $stackPtr);
+    }
+
+    /**
+     * Process all interfaces for current class.
+     *
+     * @param PhpCsFile $phpcsFile
+     * @param int $stackPtr
+     *
+     * @return void
+     */
+    protected function processInterfaces(PhpCsFile $phpcsFile, $stackPtr)
+    {
+        $interfaces = $phpcsFile->findImplementedInterfaceNames($phpcsFile->findPrevious(T_CLASS, $stackPtr));
+        if ($interfaces === false) {
+            return;
+        }
+
+        foreach ($interfaces as $interface) {
+            if (! $this->isLegacyClassname($interface)) {
+                continue;
+            }
+
+            $position = $phpcsFile->findNext(T_STRING, $stackPtr, null, false, $interface);
+            if ($position === false) {
+                continue;
+            }
+
+            $this->addFixableError($phpcsFile, $position, $interface);
+        }
+    }
 }

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

@@ -19,19 +19,14 @@
  * 02110-1301, USA.
  */
 
+use PHP_CodeSniffer_File as PhpCsFile;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
+
 /**
  * Migrate PHP inline comments, e.g. for IDEs.
  */
-class Typo3Update_Sniffs_LegacyClassnames_InlineCommentSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_InlineCommentSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
-    /**
-     * Original token content for reuse accross methods.
-     * @var string
-     */
-    protected $originalTokenContent = '';
-
     /**
      * Returns the token types that this sniff is interested in.
      *
@@ -47,19 +42,20 @@ class Typo3Update_Sniffs_LegacyClassnames_InlineCommentSniff implements PHP_Code
     /**
      * Processes the tokens that this sniff is interested in.
      *
-     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
+     * @param PhpCsFile $phpcsFile The file where the token was found.
      * @param int                  $stackPtr  The position in the stack where
      *                                        the token was found.
      *
      * @return void
      */
-    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
     {
         $tokens = $phpcsFile->getTokens();
         $this->originalTokenContent = $tokens[$stackPtr]['content'];
         $commentParts = preg_split('/\s+/', $this->originalTokenContent);
 
-        if (count($commentParts) !== 5 || $commentParts[1] !== '@var' || ($commentParts[2][0] !== '$' && $commentParts[3][0] !== '$')) {
+        if (count($commentParts) !== 5 || $commentParts[1] !== '@var'
+            || ($commentParts[2][0] !== '$' && $commentParts[3][0] !== '$')) {
             return;
         }
 

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

@@ -19,13 +19,13 @@
  * 02110-1301, USA.
  */
 
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
+
 /**
  * Detect and migrate instanceof checks of old legacy classnames.
  */
-class Typo3Update_Sniffs_LegacyClassnames_InstanceofSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_InstanceofSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * Returns the token types that this sniff is interested in.
      *

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

@@ -19,22 +19,17 @@
  * 02110-1301, USA.
  */
 
+use PHP_CodeSniffer_File as PhpCsFile;
 use PHP_CodeSniffer_Tokens as Tokens;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
 
 /**
  * Detect and migrate instantiations of old legacy classnames using "makeInstance".
  */
-class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithMakeInstanceSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithMakeInstanceSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
     use \Typo3Update\Sniffs\ExtendedPhpCsSupportTrait;
 
-    /**
-     * Original token content for reuse accross methods.
-     * @var string
-     */
-    protected $originalTokenContent = '';
-
     /**
      * Returns the token types that this sniff is interested in.
      *
@@ -48,13 +43,13 @@ class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithMakeInstanceSniff imp
     /**
      * Processes the tokens that this sniff is interested in.
      *
-     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
+     * @param PhpCsFile $phpcsFile The file where the token was found.
      * @param int                  $stackPtr  The position in the stack where
      *                                        the token was found.
      *
      * @return void
      */
-    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
     {
         if (!$this->isFunctionCall($phpcsFile, $stackPtr)) {
             return;

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

@@ -19,13 +19,13 @@
  * 02110-1301, USA.
  */
 
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
+
 /**
  * Detect and migrate old legacy classnames instantiations using phps "new".
  */
-class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithNewSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithNewSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * Returns the token types that this sniff is interested in.
      *

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

@@ -19,14 +19,15 @@
  * 02110-1301, USA.
  */
 
+use PHP_CodeSniffer_File as PhpCsFile;
 use PHP_CodeSniffer_Tokens as Tokens;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
 
 /**
  * Detect and migrate old legacy classname instantiations using objectmanager create and get.
  */
-class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithObjectManagerSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithObjectManagerSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
     use \Typo3Update\Sniffs\ExtendedPhpCsSupportTrait;
 
     /**
@@ -42,13 +43,13 @@ class Typo3Update_Sniffs_LegacyClassnames_InstantiationWithObjectManagerSniff im
     /**
      * Processes the tokens that this sniff is interested in.
      *
-     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
+     * @param PhpCsFile $phpcsFile The file where the token was found.
      * @param int                  $stackPtr  The position in the stack where
      *                                        the token was found.
      *
      * @return void
      */
-    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
     {
         if (!$this->isFunctionCall($phpcsFile, $stackPtr)) {
             return;

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

@@ -19,22 +19,16 @@
  * 02110-1301, USA.
  */
 
-use PHP_CodeSniffer_Tokens as Tokens;
+use PHP_CodeSniffer_File as PhpcsFile;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
 
 /**
  * Detect and migrate instantiations of old legacy classnames using "makeInstance".
  */
-class Typo3Update_Sniffs_LegacyClassnames_IsACallSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_IsACallSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
     use \Typo3Update\Sniffs\ExtendedPhpCsSupportTrait;
 
-    /**
-     * Original token content for reuse accross methods.
-     * @var string
-     */
-    protected $originalTokenContent = '';
-
     /**
      * Returns the token types that this sniff is interested in.
      *
@@ -48,13 +42,13 @@ class Typo3Update_Sniffs_LegacyClassnames_IsACallSniff implements PHP_CodeSniffe
     /**
      * Processes the tokens that this sniff is interested in.
      *
-     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
+     * @param PhpCsFile $phpcsFile The file where the token was found.
      * @param int                  $stackPtr  The position in the stack where
      *                                        the token was found.
      *
      * @return void
      */
-    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
     {
         if (!$this->isFunctionCall($phpcsFile, $stackPtr)) {
             return;

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

@@ -0,0 +1,123 @@
+<?php
+namespace Typo3Update\Sniffs\LegacyClassnames;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use Typo3Update\Sniffs\OptionsAccessTrait;
+
+/**
+ * Singleton wrapper for mappings.
+ *
+ * Will check the configured file for whether a class is legacy and provides further methods.
+ * Also can update to add new migrated class names.
+ */
+final class Mapping
+{
+    use OptionsAccessTrait;
+
+    // Singleton implementation - Start
+    static protected $instance = null;
+    /**
+     * Get the singleton instance.
+     *
+     * @return Mapping
+     */
+    public static function getInstance()
+    {
+        if (static::$instance === null) {
+            static::$instance = new Mapping();
+        }
+
+        return static::$instance;
+    }
+    private function __clone()
+    {
+    }
+    private function __wakeup()
+    {
+    }
+    private function __construct()
+    {
+        $this->mappings = require $this->getMappingFile();
+    }
+    // Singleton implementation - End
+
+    /**
+     * Contains mappings as defined by composer for alias mapping.
+     * @var array
+     */
+    protected $mappings = [];
+
+    /**
+     * Checks whether a mapping exists for the given $classname,
+     * indicating it's legacy.
+     *
+     * @param string $classname
+     * @return bool
+     */
+    public function isLegacyClassname($classname)
+    {
+        return isset($this->mappings['aliasToClassNameMapping'][strtolower($classname)]);
+    }
+
+    /**
+     * @param string $classname
+     * @return string
+     */
+    public function getNewClassname($classname)
+    {
+        return $this->mappings['aliasToClassNameMapping'][strtolower($classname)];
+    }
+
+    /**
+     * Use to add new mappings found during parsing.
+     * E.g. in MissingNamespaceSniff old class definitions are fixed and a new mapping exists afterwards.
+     *
+     * @param string $legacyClassname
+     * @param string $newClassname
+     *
+     * @return void
+     */
+    public function addLegacyClassname($legacyClassname, $newClassname)
+    {
+        $key = strtolower($legacyClassname);
+
+        $this->mappings['aliasToClassNameMapping'][$key] = $newClassname;
+        $this->mappings['classNameToAliasMapping'][$newClassname] = [$key => $key];
+    }
+
+    /**
+     * Used to persist new mappings.
+     */
+    public function __destruct()
+    {
+        // For some reasons desctruct is called multiple times, while construct
+        // is called once. Until we know the issue and fix it, this is our
+        // workaround to not break the file and do stuff in an unkown instance.
+        if ($this !== static::$instance) {
+            return;
+        }
+
+        file_put_contents(
+            $this->getMappingFile(),
+            '<?php' . PHP_EOL . 'return ' . var_export($this->mappings, true) . ';'
+        );
+    }
+}

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

@@ -0,0 +1,164 @@
+<?php
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use PHP_CodeSniffer_File as PhpCsFile;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
+
+/**
+ * Detect missing namespaces for class definitions.
+ */
+class Typo3Update_Sniffs_LegacyClassnames_MissingNamespaceSniff extends AbstractClassnameChecker
+{
+    /**
+     * Returns the token types that this sniff is interested in.
+     *
+     * @return array<int>
+     */
+    public function register()
+    {
+        return [
+            T_CLASS,
+            T_INTERFACE,
+            T_TRAIT,
+        ];
+    }
+
+    /**
+     * Processes the tokens that this sniff is interested in.
+     *
+     * @param PhpCsFile $phpcsFile The file where the token was found.
+     * @param int                  $stackPtr  The position in the stack where
+     *                                        the token was found.
+     *
+     * @return void
+     */
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
+    {
+        $tokens = $phpcsFile->getTokens();
+
+        $namespacePosition = $phpcsFile->findPrevious(T_NAMESPACE, $stackPtr);
+        if ($namespacePosition !== false) {
+            return;
+        }
+        $classnamePosition = $phpcsFile->findNext(T_STRING, $stackPtr);
+
+        if ($classnamePosition === false) {
+            return;
+        }
+
+        $classname = $tokens[$classnamePosition]['content'];
+        $this->addFixableError($phpcsFile, $classnamePosition, $classname);
+    }
+
+    /**
+     * Overwrite as we don't look up the classname, but check whether the style is legacy.
+     *
+     * @param string $classname
+     * @return bool
+     */
+    protected function isLegacyClassname($classname)
+    {
+        return strpos($classname, 'Tx_') === 0;
+    }
+
+    /**
+     * @param string $classname
+     * @return string
+     */
+    protected function getNewClassname($classname)
+    {
+        return substr($classname, strrpos($classname, '_') + 1);
+    }
+
+    /**
+     *
+     * @param PhpCsFile $phpcsFile
+     * @param int $classnamePosition
+     * @param string $classname
+     * @param bool $forceEmptyPrefix Defines whether '\\' prefix should be checked or always be left out.
+     */
+    protected function replaceLegacyClassname(
+        PhpCsFile $phpcsFile,
+        $classnamePosition,
+        $classname,
+        $forceEmptyPrefix = true
+    ) {
+        parent::replaceLegacyClassname($phpcsFile, $classnamePosition, $classname, $forceEmptyPrefix);
+
+        $tokens = $phpcsFile->getTokens();
+        $lineEndings = PhpCsFile::detectLineEndings($phpcsFile->getFilename());
+        $suffix = $lineEndings;
+
+        if ($tokens[1]['code'] !== T_WHITESPACE) {
+            $suffix .= $lineEndings;
+        }
+
+        $phpcsFile->fixer->replaceToken(
+            $this->getNamespacePosition($phpcsFile),
+            '<?php' . $lineEndings . $this->getNamespaceDefinition($classname) . $suffix
+        );
+        $this->addLegacyClassname(
+            $classname,
+            $this->getNamespace($classname) . '\\' . $this->getNewClassname($classname)
+        );
+    }
+
+    /**
+     * @param PhpCsFile $phpcsFile
+     * @return int|false
+     */
+    protected function getNamespacePosition(PhpCsFile $phpcsFile)
+    {
+        return $phpcsFile->findNext(T_OPEN_TAG, 0);
+    }
+
+    /**
+     * Returns whole statement to define namespace.
+     *
+     * E.g. namespace VENDOR\ExtName\FolderName;
+     *
+     * @param string $classname
+     * @return string
+     */
+    protected function getNamespaceDefinition($classname)
+    {
+        return 'namespace ' . $this->getNamespace($classname) . ';';
+    }
+
+    /**
+     * Returns namespace, based on legacy class name.
+     *
+     * E.g. Tx_ExtName_FolderName_FileName -> VENDOR\ExtName\FolderName
+     *
+     * @param string $classname
+     * @return string
+     */
+    protected function getNamespace($classname)
+    {
+        $vendor = trim($this->getVendor(), '\\/');
+        $classnameParts = explode('_', $classname);
+
+        unset($classnameParts[0]); // Remove Tx_
+        unset($classnameParts[count($classnameParts)]); // Remove class name itself.
+
+        return $vendor . '\\' . implode('\\', $classnameParts);
+    }
+}

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

@@ -0,0 +1,114 @@
+<?php
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use PHP_CodeSniffer_File as PhpCsFile;
+use PHP_CodeSniffer_Sniff as PhpCsSniff;
+use PHP_CodeSniffer_Tokens as Tokens;
+
+/**
+ * Detect whether vendor is missing for plugins and modules registrations and configurations.
+ */
+class Typo3Update_Sniffs_LegacyClassnames_MissingVendorForPluginsAndModulesSniff implements PhpCsSniff
+{
+    use \Typo3Update\Sniffs\ExtendedPhpCsSupportTrait;
+    use \Typo3Update\Sniffs\OptionsAccessTrait;
+
+    /**
+     * Returns the token types that this sniff is interested in.
+     *
+     * @return array<int>
+     */
+    public function register()
+    {
+        return Tokens::$functionNameTokens;
+    }
+
+    /**
+     * Processes the tokens that this sniff is interested in.
+     *
+     * @param PhpCsFile $phpcsFile The file where the token was found.
+     * @param int                  $stackPtr  The position in the stack where
+     *                                        the token was found.
+     *
+     * @return void
+     */
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
+    {
+        $functionsToHandle = ['registerPlugin', 'configurePlugin', 'registerModule'];
+        if (!$this->isFunctionCall($phpcsFile, $stackPtr)) {
+            return;
+        }
+        $tokens = $phpcsFile->getTokens();
+
+        if (!in_array($tokens[$stackPtr]['content'], $functionsToHandle)) {
+            return;
+        }
+
+        $firstArgument = $phpcsFile->findNext([T_WHITESPACE, T_OPEN_PARENTHESIS], $stackPtr + 1, null, true);
+        if (! $this->isVendorMissing($phpcsFile, $firstArgument)) {
+            return;
+        }
+
+        $fix = $phpcsFile->addFixableError(
+            'No vendor is given, that will break TYPO3 handling for namespaced classes.'
+                . ' Add vendor before Extensionkey like: "%s." . $_EXTKEY',
+            $firstArgument,
+            'missingVendor',
+            [$this->getVendor()]
+        );
+
+        if ($fix === true) {
+            $phpcsFile->fixer->replaceToken(
+                $firstArgument,
+                "'{$this->getVendor()}.' . {$tokens[$firstArgument]['content']}"
+            );
+        }
+    }
+
+    /**
+     * Checks whether vendor is missing in given argument.
+     *
+     * @param PhpCsFile $phpcsFile
+     * @param int|bool $argumentStart
+     *
+     * @return bool
+     */
+    protected function isVendorMissing(PhpCsFile $phpcsFile, $argumentStart)
+    {
+        if ($argumentStart === false) {
+            return false;
+        }
+
+        $argumentEnd = $phpcsFile->findNext(T_COMMA, $argumentStart);
+        if ($argumentEnd === false) {
+            return false;
+        }
+
+        $stringConcats = array_filter(
+            array_slice($phpcsFile->getTokens(), $argumentStart, $argumentEnd - $argumentStart),
+            function (array $token) {
+                return $token['code'] === 'PHPCS_T_STRING_CONCAT';
+            }
+        );
+
+        return count($stringConcats) === 0;
+    }
+}

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

@@ -19,13 +19,13 @@
  * 02110-1301, USA.
  */
 
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
+
 /**
  * Detect and migrate static calls to old legacy classnames.
  */
-class Typo3Update_Sniffs_LegacyClassnames_StaticCallSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_StaticCallSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * Define whether the T_STRING default behaviour should be checked before
      * or after the $stackPtr.

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

@@ -19,15 +19,13 @@
  * 02110-1301, USA.
  */
 
-use PHP_CodeSniffer_Tokens as Tokens;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
 
 /**
  * Migrate Typehints in catch statements.
  */
-class Typo3Update_Sniffs_LegacyClassnames_TypehintCatchExceptionSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_TypehintCatchExceptionSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * Returns the token types that this sniff is interested in.
      *

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

@@ -19,15 +19,14 @@
  * 02110-1301, USA.
  */
 
-use PHP_CodeSniffer_Tokens as Tokens;
+use PHP_CodeSniffer_File as PhpCsFile;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
 
 /**
  * Migrate Typehints in function / method definitions.
  */
-class Typo3Update_Sniffs_LegacyClassnames_TypehintSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_TypehintSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * Returns the token types that this sniff is interested in.
      *
@@ -41,13 +40,13 @@ class Typo3Update_Sniffs_LegacyClassnames_TypehintSniff implements PHP_CodeSniff
     /**
      * Processes the tokens that this sniff is interested in.
      *
-     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
+     * @param PhpCsFile $phpcsFile The file where the token was found.
      * @param int                  $stackPtr  The position in the stack where
      *                                        the token was found.
      *
      * @return void
      */
-    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
+    public function process(PhpCsFile $phpcsFile, $stackPtr)
     {
         $params = $phpcsFile->getMethodParameters($stackPtr);
         foreach ($params as $parameter) {

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

@@ -19,15 +19,13 @@
  * 02110-1301, USA.
  */
 
-use PHP_CodeSniffer_Tokens as Tokens;
+use Typo3Update\Sniffs\LegacyClassnames\AbstractClassnameChecker;
 
 /**
  * Migrate old legacy class names in use statements.
  */
-class Typo3Update_Sniffs_LegacyClassnames_UseSniff implements PHP_CodeSniffer_Sniff
+class Typo3Update_Sniffs_LegacyClassnames_UseSniff extends AbstractClassnameChecker
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
-
     /**
      * Returns the token types that this sniff is interested in.
      *

src/Standards/Typo3Update/Sniffs/OptionsAccessTrait.php

@@ -0,0 +1,57 @@
+<?php
+namespace Typo3Update\Sniffs;
+
+/*
+ * Copyright (C) 2017  Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use PHP_CodeSniffer as PhpCs;
+
+/**
+ * Wrapper to retrieve options from PhpCs with defaults.
+ */
+trait OptionsAccessTrait
+{
+    /**
+     * Returns the configured vendor, e.g. to generate new namespaces.
+     *
+     * @return string
+     */
+    public function getVendor()
+    {
+        $vendor = PhpCs::getConfigData('vendor');
+        if (!$vendor) {
+            $vendor = 'YourCompany';
+        }
+        return trim($vendor, '\\/');
+    }
+
+    /**
+     * Returns the configured file path containing the mappings for classes, interfaced and traits.
+     *
+     * @return string
+     */
+    public function getMappingFile()
+    {
+        $mappingFile = PhpCs::getConfigData('mappingFile');
+        if (!$mappingFile) {
+            $mappingFile = __DIR__ . '/../../../../LegacyClassnames.php';
+        }
+        return $mappingFile;
+    }
+}

src/Standards/Typo3Update/ruleset.xml

@@ -12,4 +12,8 @@
             <property name="allowedTags" type="array" value="@param,@return,@var,@see,@throws"/>
         </properties>
     </rule>
+
+    <rule ref="Typo3Update.LegacyClassnames.MissingNamespace.legacyClassname">
+        <message>Legacy class definitions are not allowed; found "%s". Wrap your class inside a namespace.</message>
+    </rule>
 </ruleset>