automated-typo3-update/src/Standards/Typo3Update/Sniffs/LegacyClassnames/AbstractClassnameChecker.php
Daniel Siepmann 89af4a2e37
TASK: Configure phpmd
* Make phpmd pass.
* Comment supressions with a reason.
2017-04-11 08:40:19 +02:00

280 lines
8.4 KiB
PHP

<?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 PHP_CodeSniffer as PhpCs;
use PHP_CodeSniffer_File as PhpCsFile;
use PHP_CodeSniffer_Sniff as PhpCsSniff;
use Typo3Update\Sniffs\LegacyClassnames\Mapping;
/**
* Provide common uses for all sniffs, regarding class name checks.
*/
abstract class AbstractClassnameChecker implements PhpCsSniff
{
/**
* A list of extension names that might contain legacy class names.
* Used to check clas names for warnings.
*
* Configure through ruleset.xml.
*
* @var array<string>
*/
public $legacyExtensions = ['Extbase', 'Fluid'];
/**
* @var Mapping
*/
protected $legacyMapping;
/**
* 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();
}
/**
* Define whether the T_STRING default behaviour should be checked before
* or after the $stackPtr.
*
* @return bool
*/
protected function shouldLookBefore()
{
return false;
}
/**
* 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
*
* @SuppressWarnings(PHPMD.ElseExpression) This is for performance reason.
*/
public function process(PhpCsFile $phpcsFile, $stackPtr)
{
$tokens = $phpcsFile->getTokens();
if ($this->shouldLookBefore()) {
$classnamePosition = $phpcsFile->findPrevious(T_STRING, $stackPtr);
} else {
$classnamePosition = $phpcsFile->findNext(T_STRING, $stackPtr);
}
if ($classnamePosition === false) {
return;
}
$classname = $tokens[$classnamePosition]['content'];
$this->addFixableError($phpcsFile, $classnamePosition, $classname);
}
/**
* Checks whether a mapping exists for the given $classname,
* indicating it's legacy.
*
* @param string $classname
* @return bool
*/
protected function isLegacyClassname($classname)
{
return $this->legacyMapping->isLegacyClassname($classname);
}
/**
* Guesses whether the given classname is legacy. Will not check
* isLegacyClassname
*
* @param string $classname
* @return bool
*/
private function isMaybeLegacyClassname($classname)
{
if (strpos($classname, 'Tx_') === false) {
return false;
}
$extensionName = call_user_func(function ($classname) {
$nameParts = explode('_', $classname);
return $nameParts[1];
}, $classname);
if (!in_array($extensionName, $this->legacyExtensions)) {
return false;
}
return true;
}
/**
* @param string $classname
* @return string
*/
protected function getNewClassname($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);
}
/**
* Add an fixable error if given $classname is legacy.
*
* @param PhpCsFile $phpcsFile
* @param int $classnamePosition
* @param string $classname
*/
public function addFixableError(PhpCsFile $phpcsFile, $classnamePosition, $classname)
{
$classname = trim($classname, '\\\'"'); // Remove trailing slash, and quotes.
$this->addMaybeWarning($phpcsFile, $classnamePosition, $classname);
if ($this->isLegacyClassname($classname) === false) {
return;
}
$fix = $phpcsFile->addFixableError(
'Legacy classes are not allowed; found "%s", use "%s" instead',
$classnamePosition,
'legacyClassname',
[$classname, $this->getNewClassname($classname)]
);
if ($fix === true) {
$this->replaceLegacyClassname($phpcsFile, $classnamePosition, $classname);
}
}
/**
* Add an warning if given $classname is maybe legacy.
*
* @param PhpCsFile $phpcsFile
* @param int $classnamePosition
* @param string $classname
*/
private function addMaybeWarning(PhpCsFile $phpcsFile, $classnamePosition, $classname)
{
if ($this->isLegacyClassname($classname) || $this->isMaybeLegacyClassname($classname) === false) {
return;
}
$phpcsFile->addWarning(
'Legacy classes are not allowed; found %s that might be a legacy class that does not exist anymore',
$classnamePosition,
'mightBeLegacyClassname',
[$classname]
);
}
/**
* Replaces the classname at $classnamePosition with $classname in $phpcsFile.
*
* @param PhpCsFile $phpcsFile
* @param int $classnamePosition
* @param string $classname
* @param bool $forceEmptyPrefix Defines whether '\\' prefix should be checked or always be left out.
*
* @SuppressWarnings(PHPMD.BooleanArgumentFlag)
*/
protected function replaceLegacyClassname(
PhpCsFile $phpcsFile,
$classnamePosition,
$classname,
$forceEmptyPrefix = false
) {
$prefix = '\\';
if ($forceEmptyPrefix || $phpcsFile->getTokens()[$classnamePosition -1]['code'] === T_NS_SEPARATOR) {
$prefix = '';
}
$phpcsFile->fixer->replaceToken(
$classnamePosition,
$this->getTokenForReplacement($prefix . $this->getNewClassname($classname), $classname, $phpcsFile)
);
}
/**
* String to use for replacing / fixing the token.
* Default is class name itself, can be overwritten in sniff for special behaviour.
*
* @param string $newClassname
* @param string $originalClassname
* @param PhpCsFile $phpcsFile
* @return string
*
* @SuppressWarnings(PHPMD.UnusedFormalParameter) We need to match the signature.
*/
protected function getTokenForReplacement($newClassname, $originalClassname, PhpCsFile $phpcsFile)
{
return $newClassname;
}
/**
* 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);
}
}