<?php

/**
 * Checks to ensure that there are no comments after statements.
 *
 * @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\Squiz\Sniffs\Commenting;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Sniffs\Sniff;
class PostStatementCommentSniff implements Sniff
{
    /**
     * A list of tokenizers this sniff supports.
     *
     * @var array
     */
    public $supportedTokenizers = ['PHP', 'JS'];
    /**
     * Exceptions to the rule.
     *
     * If post statement comments are found within the condition
     * parenthesis of these structures, leave them alone.
     *
     * @var array
     */
    private $controlStructureExceptions = [\T_IF => \true, \T_ELSEIF => \true, \T_SWITCH => \true, \T_WHILE => \true, \T_FOR => \true, \T_FOREACH => \true, \T_MATCH => \true];
    /**
     * Returns an array of tokens this test wants to listen for.
     *
     * @return array<int|string>
     */
    public function register()
    {
        return [\T_COMMENT];
    }
    //end register()
    /**
     * Processes this sniff, 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 = $phpcsFile->getTokens();
        if (\substr($tokens[$stackPtr]['content'], 0, 2) !== '//') {
            return;
        }
        $commentLine = $tokens[$stackPtr]['line'];
        $lastContent = $phpcsFile->findPrevious(\T_WHITESPACE, $stackPtr - 1, null, \true);
        if ($lastContent === \false || $tokens[$lastContent]['line'] !== $commentLine || $tokens[$stackPtr]['column'] === 1) {
            return;
        }
        if ($tokens[$lastContent]['code'] === \T_CLOSE_CURLY_BRACKET) {
            return;
        }
        // Special case for JS files and PHP closures.
        if ($tokens[$lastContent]['code'] === \T_COMMA || $tokens[$lastContent]['code'] === \T_SEMICOLON) {
            $lastContent = $phpcsFile->findPrevious(\T_WHITESPACE, $lastContent - 1, null, \true);
            if ($lastContent === \false || $tokens[$lastContent]['code'] === \T_CLOSE_CURLY_BRACKET) {
                return;
            }
        }
        // Special case for (trailing) comments within multi-line control structures.
        if (isset($tokens[$stackPtr]['nested_parenthesis']) === \true) {
            $nestedParens = $tokens[$stackPtr]['nested_parenthesis'];
            foreach ($nestedParens as $open => $close) {
                if (isset($tokens[$open]['parenthesis_owner']) === \true && isset($this->controlStructureExceptions[$tokens[$tokens[$open]['parenthesis_owner']]['code']]) === \true) {
                    return;
                }
            }
        }
        if ($phpcsFile->tokenizerType === 'PHP' && \preg_match('|^//[ \\t]*@[^\\s]+|', $tokens[$stackPtr]['content']) === 1) {
            $error = 'Annotations may not appear after statements';
            $phpcsFile->addError($error, $stackPtr, 'AnnotationFound');
            return;
        }
        $error = 'Comments may not appear after statements';
        $fix = $phpcsFile->addFixableError($error, $stackPtr, 'Found');
        if ($fix === \true) {
            $phpcsFile->fixer->addNewlineBefore($stackPtr);
        }
    }
    //end process()
}
//end class
