126 lines
4.4 KiB
PHP
126 lines
4.4 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\Variables;
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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 use of `global` with variable variables, support for which has been removed in PHP 7.0.
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*
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* PHP version 7.0
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*
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* @link https://wiki.php.net/rfc/uniform_variable_syntax#global_keyword_takes_only_simple_variables
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*
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* @since 7.0.0
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*/
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class ForbiddenGlobalVariableVariableSniff 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 7.0.0
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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_GLOBAL);
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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 7.0.0
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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 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->supportsAbove('7.0') === false) {
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return;
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}
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$tokens = $phpcsFile->getTokens();
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$endOfStatement = $phpcsFile->findNext(array(\T_SEMICOLON, \T_CLOSE_TAG), ($stackPtr + 1));
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if ($endOfStatement === false) {
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// No semi-colon - live coding.
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return;
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}
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for ($ptr = ($stackPtr + 1); $ptr <= $endOfStatement; $ptr++) {
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$errorThrown = false;
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$nextComma = $phpcsFile->findNext(\T_COMMA, $ptr, $endOfStatement, false, null, true);
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$varEnd = ($nextComma === false) ? $endOfStatement : $nextComma;
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$variable = $phpcsFile->findNext(\T_VARIABLE, $ptr, $varEnd);
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$varString = trim($phpcsFile->getTokensAsString($ptr, ($varEnd - $ptr)));
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$data = array($varString);
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if ($variable !== false) {
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$prev = $phpcsFile->findPrevious(Tokens::$emptyTokens, ($variable - 1), $ptr, true);
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if ($prev !== false && $tokens[$prev]['type'] === 'T_DOLLAR') {
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$next = $phpcsFile->findNext(Tokens::$emptyTokens, ($variable + 1), $varEnd, true);
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if ($next !== false
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&& \in_array($tokens[$next]['code'], array(\T_OPEN_SQUARE_BRACKET, \T_OBJECT_OPERATOR, \T_DOUBLE_COLON), true) === true
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) {
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$phpcsFile->addError(
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'Global with variable variables is not allowed since PHP 7.0. Found %s',
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$variable,
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'Found',
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$data
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);
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$errorThrown = true;
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} else {
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$phpcsFile->addWarning(
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'Global with anything other than bare variables is discouraged since PHP 7.0. Found %s',
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$variable,
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'NonBareVariableFound',
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$data
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);
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$errorThrown = true;
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}
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}
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}
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if ($errorThrown === false) {
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$dollar = $phpcsFile->findNext(\T_DOLLAR, $ptr, $varEnd);
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if ($dollar !== false) {
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$next = $phpcsFile->findNext(Tokens::$emptyTokens, ($dollar + 1), $varEnd, true);
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if ($tokens[$next]['code'] === \T_OPEN_CURLY_BRACKET) {
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$phpcsFile->addWarning(
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'Global with anything other than bare variables is discouraged since PHP 7.0. Found %s',
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$dollar,
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'NonBareVariableFound',
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$data
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);
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}
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}
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}
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// Move the stack pointer forward to the next variable for multi-variable statements.
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if ($nextComma === false) {
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break;
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}
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$ptr = $nextComma;
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}
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}
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}
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