85 lines
2.4 KiB
PHP
85 lines
2.4 KiB
PHP
<?php
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/**
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* PHPCompatibility, an external standard for PHP_CodeSniffer.
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*
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* @package PHPCompatibility
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* @copyright 2012-2019 PHPCompatibility Contributors
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* @license https://opensource.org/licenses/LGPL-3.0 LGPL3
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* @link https://github.com/PHPCompatibility/PHPCompatibility
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*/
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namespace PHPCompatibility\Sniffs\Lists;
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use PHPCompatibility\Sniff;
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use PHP_CodeSniffer_File as File;
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/**
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* Detect short list syntax for symmetric array destructuring.
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*
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* "The shorthand array syntax (`[]`) may now be used to destructure arrays for
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* assignments (including within `foreach`), as an alternative to the existing
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* `list()` syntax, which is still supported."
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*
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* PHP version 7.1
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*
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* @link https://www.php.net/manual/en/migration71.new-features.php#migration71.new-features.symmetric-array-destructuring
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* @link https://wiki.php.net/rfc/short_list_syntax
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*
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* @since 9.0.0
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*/
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class NewShortListSniff extends Sniff
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{
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/**
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* Returns an array of tokens this test wants to listen for.
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*
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* @since 9.0.0
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*
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* @return array
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*/
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public function register()
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{
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return array(\T_OPEN_SHORT_ARRAY);
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}
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/**
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* Processes this test, when one of its tokens is encountered.
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*
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* @since 9.0.0
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*
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* @param \PHP_CodeSniffer_File $phpcsFile The file being scanned.
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* @param int $stackPtr The position of the current token in the
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* stack passed in $tokens.
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*
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* @return int|void Integer stack pointer to skip forward or void to continue
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* normal file processing.
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*/
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public function process(File $phpcsFile, $stackPtr)
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{
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if ($this->supportsBelow('7.0') === false) {
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return;
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}
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if ($this->isShortList($phpcsFile, $stackPtr) === false) {
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return;
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}
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$tokens = $phpcsFile->getTokens();
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$closer = $tokens[$stackPtr]['bracket_closer'];
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$hasVariable = $phpcsFile->findNext(\T_VARIABLE, ($stackPtr + 1), $closer);
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if ($hasVariable === false) {
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// List syntax is only valid if there are variables in it.
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return;
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}
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$phpcsFile->addError(
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'The shorthand list syntax "[]" to destructure arrays is not available in PHP 7.0 or earlier.',
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$stackPtr,
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'Found'
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);
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return ($closer + 1);
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}
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}
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