<?php
/**
* PHPCompatibility, an external standard for PHP_CodeSniffer.
*
* @package PHPCompatibility
* @copyright 2012-2019 PHPCompatibility Contributors
* @license https://opensource.org/licenses/LGPL-3.0 LGPL3
* @link https://github.com/PHPCompatibility/PHPCompatibility
*/
namespace PHPCompatibility\Sniffs\ControlStructures;
use PHPCompatibility\Sniff;
use PHP_CodeSniffer_File as File;
/**
* Switch statements can not have multiple default blocks since PHP 7.0.
*
* PHP version 7.0
*
* @link https://wiki.php.net/rfc/switch.default.multiple
* @link https://www.php.net/manual/en/control-structures.switch.php
*
* @since 7.0.0
*/
class ForbiddenSwitchWithMultipleDefaultBlocksSniff extends Sniff
{
/**
* Returns an array of tokens this test wants to listen for.
*
* @since 7.0.0
*
* @return array
*/
public function register()
{
return array(\T_SWITCH);
}
/**
* Processes this test, when one of its tokens is encountered.
*
* @since 7.0.0
*
* @param \PHP_CodeSniffer_File $phpcsFile The file being scanned.
* @param int $stackPtr The position of the current token
* in the stack passed in $tokens.
*
* @return void
*/
public function process(File $phpcsFile, $stackPtr)
{
if ($this->supportsAbove('7.0') === false) {
return;
}
$tokens = $phpcsFile->getTokens();
if (isset($tokens[$stackPtr]['scope_closer']) === false) {
return;
}
$defaultToken = $stackPtr;
$defaultCount = 0;
$targetLevel = $tokens[$stackPtr]['level'] + 1;
while ($defaultCount < 2 && ($defaultToken = $phpcsFile->findNext(array(\T_DEFAULT), $defaultToken + 1, $tokens[$stackPtr]['scope_closer'])) !== false) {
// Same level or one below (= two default cases after each other).
if ($tokens[$defaultToken]['level'] === $targetLevel || $tokens[$defaultToken]['level'] === ($targetLevel + 1)) {
$defaultCount++;
}
}
if ($defaultCount > 1) {
$phpcsFile->addError(
'Switch statements can not have multiple default blocks since PHP 7.0',
$stackPtr,
'Found'
);
}
}
}