90 lines
2.6 KiB
PHP
90 lines
2.6 KiB
PHP
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<?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\Syntax;
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use PHPCompatibility\Sniff;
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use PHP_CodeSniffer_File as File;
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use PHP_CodeSniffer_Tokens as Tokens;
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/**
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* Detect dynamic access to static methods and properties, as well as class constants.
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*
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* As of PHP 5.3, static properties and methods as well as class constants
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* can be accessed using a dynamic (variable) class name.
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*
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* PHP version 5.3
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*
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* @link https://www.php.net/manual/en/migration53.new-features.php
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*
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* @since 8.1.0
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* @since 9.0.0 Renamed from `DynamicAccessToStaticSniff` to `NewDynamicAccessToStaticSniff`.
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*/
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class NewDynamicAccessToStaticSniff 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 8.1.0
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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(
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\T_DOUBLE_COLON,
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);
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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 8.1.0
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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 void
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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('5.2') === false) {
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return;
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}
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$tokens = $phpcsFile->getTokens();
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$prevNonEmpty = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($stackPtr - 1), null, true);
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// Disregard `static::` as well. Late static binding is reported by another sniff.
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if ($tokens[$prevNonEmpty]['code'] === \T_SELF
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|| $tokens[$prevNonEmpty]['code'] === \T_PARENT
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|| $tokens[$prevNonEmpty]['code'] === \T_STATIC
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) {
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return;
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}
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if ($tokens[$prevNonEmpty]['code'] === \T_STRING) {
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$prevPrevNonEmpty = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($prevNonEmpty - 1), null, true);
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if ($tokens[$prevPrevNonEmpty]['code'] !== \T_OBJECT_OPERATOR) {
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return;
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}
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}
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$phpcsFile->addError(
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'Static class properties and methods, as well as class constants, could not be accessed using a dynamic (variable) classname in PHP 5.2 or earlier.',
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$stackPtr,
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'Found'
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);
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}
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}
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