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* Generic_Sniffs_WhiteSpace_DisallowTabIndentSniff.
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* @package PHP_CodeSniffer
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* @author Greg Sherwood <gsherwood@squiz.net>
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* @author Marc McIntyre <mmcintyre@squiz.net>
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* @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
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* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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* @link http://pear.php.net/package/PHP_CodeSniffer
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* Generic_Sniffs_WhiteSpace_DisallowTabIndentSniff.
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* Throws errors if tabs are used for indentation.
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* @package PHP_CodeSniffer
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* @author Greg Sherwood <gsherwood@squiz.net>
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* @author Marc McIntyre <mmcintyre@squiz.net>
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* @copyright 2006-2011 Squiz Pty Ltd (ABN 77 084 670 600)
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* @license http://matrix.squiz.net/developer/tools/php_cs/licence BSD Licence
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* @version Release: 1.3.4
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* @link http://pear.php.net/package/PHP_CodeSniffer
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class Generic_Sniffs_WhiteSpace_DisallowTabIndentSniff implements PHP_CodeSniffer_Sniff
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* A list of tokenizers this sniff supports.
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public $supportedTokenizers = array(
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* Returns an array of tokens this test wants to listen for.
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public function register()
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return array(T_WHITESPACE);
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* Processes this test, when one of its tokens is encountered.
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* @param PHP_CodeSniffer_File $phpcsFile All the tokens found in the document.
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* @param int $stackPtr The position of the current token in
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* the stack passed in $tokens.
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public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
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$tokens = $phpcsFile->getTokens();
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// Make sure this is whitespace used for indentation.
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$line = $tokens[$stackPtr]['line'];
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if ($stackPtr > 0 && $tokens[($stackPtr - 1)]['line'] === $line) {
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if (strpos($tokens[$stackPtr]['content'], "\t") !== false) {
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$error = 'Spaces must be used to indent lines; tabs are not allowed';
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$phpcsFile->addError($error, $stackPtr, 'TabsUsed');