oficinasuport-wp-theme/vendor/phpcompatibility/php-compatibility/PHPCompatibility/Sniffs/LanguageConstructs/NewEmptyNonVariableSniff.php

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<?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\LanguageConstructs;
use PHPCompatibility\Sniff;
use PHP_CodeSniffer_File as File;
use PHP_CodeSniffer_Tokens as Tokens;
/**
* Verify that nothing but variables are passed to empty().
*
* Prior to PHP 5.5, `empty()` only supported variables; anything else resulted in a parse error.
*
* PHP version 5.5
*
* @link https://wiki.php.net/rfc/empty_isset_exprs
* @link https://www.php.net/manual/en/function.empty.php
*
* @since 7.0.4
* @since 9.0.0 The "is the parameter a variable" determination has been abstracted out
* and moved to a separate method `Sniff::isVariable()`.
* @since 9.0.0 Renamed from `EmptyNonVariableSniff` to `NewEmptyNonVariableSniff`.
*/
class NewEmptyNonVariableSniff extends Sniff
{
/**
* Returns an array of tokens this test wants to listen for.
*
* @since 7.0.4
*
* @return array
*/
public function register()
{
return array(\T_EMPTY);
}
/**
* Processes this test, when one of its tokens is encountered.
*
* @since 7.0.4
*
* @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->supportsBelow('5.4') === false) {
return;
}
$tokens = $phpcsFile->getTokens();
$open = $phpcsFile->findNext(Tokens::$emptyTokens, ($stackPtr + 1), null, true, null, true);
if ($open === false
|| $tokens[$open]['code'] !== \T_OPEN_PARENTHESIS
|| isset($tokens[$open]['parenthesis_closer']) === false
) {
return;
}
$close = $tokens[$open]['parenthesis_closer'];
$nestingLevel = 0;
if ($close !== ($open + 1) && isset($tokens[$open + 1]['nested_parenthesis'])) {
$nestingLevel = \count($tokens[$open + 1]['nested_parenthesis']);
}
if ($this->isVariable($phpcsFile, ($open + 1), $close, $nestingLevel) === true) {
return;
}
$phpcsFile->addError(
'Only variables can be passed to empty() prior to PHP 5.5.',
$stackPtr,
'Found'
);
}
}