<?php

/**
 * Ensures the PHP_SAPI constant is used instead of php_sapi_name().
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 */
namespace PHP_CodeSniffer\Standards\Generic\Sniffs\PHP;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
class SAPIUsageSniff implements Sniff
{
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register()
    {
        return [\T_STRING];
    }
    //end register()
    /**
     * Processes this test, when one of its tokens is encountered.
     *
     * @param \PHP_CodeSniffer\Files\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)
    {
        $tokens = $phpcsFile->getTokens();
        $ignore = [\T_DOUBLE_COLON => \true, \T_OBJECT_OPERATOR => \true, \T_NULLSAFE_OBJECT_OPERATOR => \true, \T_FUNCTION => \true, \T_CONST => \true];
        $prevToken = $phpcsFile->findPrevious(\T_WHITESPACE, $stackPtr - 1, null, \true);
        if (isset($ignore[$tokens[$prevToken]['code']]) === \true) {
            // Not a call to a PHP function.
            return;
        }
        $function = \strtolower($tokens[$stackPtr]['content']);
        if ($function === 'php_sapi_name') {
            $error = 'Use the PHP_SAPI constant instead of calling php_sapi_name()';
            $phpcsFile->addError($error, $stackPtr, 'FunctionFound');
        }
    }
    //end process()
}
//end class
