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📝 Editando: Comment.php

<?php
/**
 * Tokenizes doc block comments.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
 * @license   https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Tokenizers;

use PHP_CodeSniffer\Util;

class Comment
{

/**
     * Creates an array of tokens when given some PHP code.
     *
     * Starts by using token_get_all() but does a lot of extra processing
     * to insert information about the context of the token.
     *
     * @param string $string   The string to tokenize.
     * @param string $eolChar  The EOL character to use for splitting strings.
     * @param int    $stackPtr The position of the first token in the file.
     *
     * @return array
     */
    public function tokenizeString($string, $eolChar, $stackPtr)
    {
        if (PHP_CODESNIFFER_VERBOSITY > 1) {
            echo "\t\t*** START COMMENT TOKENIZING ***".PHP_EOL;
        }

$tokens   = [];
        $numChars = strlen($string);

/*
            Doc block comments start with /*, but typically contain an
            extra star when they are used for function and class comments.
        */

$char    = ($numChars - strlen(ltrim($string, '/*')));
        $openTag = substr($string, 0, $char);
        $string  = ltrim($string, '/*');

$tokens[$stackPtr] = [
            'content'      => $openTag,
            'code'         => T_DOC_COMMENT_OPEN_TAG,
            'type'         => 'T_DOC_COMMENT_OPEN_TAG',
            'comment_tags' => [],
        ];

$openPtr = $stackPtr;
        $stackPtr++;

if (PHP_CODESNIFFER_VERBOSITY > 1) {
            $content = Util\Common::prepareForOutput($openTag);
            echo "\t\tCreate comment token: T_DOC_COMMENT_OPEN_TAG => $content".PHP_EOL;
        }

/*
            Strip off the close tag so it doesn't interfere with any
            of our comment line processing. The token will be added to the
            stack just before we return it.
        */

$closeTag = [
            'content'        => substr($string, strlen(rtrim($string, '/*'))),
            'code'           => T_DOC_COMMENT_CLOSE_TAG,
            'type'           => 'T_DOC_COMMENT_CLOSE_TAG',
            'comment_opener' => $openPtr,
        ];

if ($closeTag['content'] === false) {
            $closeTag['content'] = '';
        }

$string = rtrim($string, '/*');

/*
            Process each line of the comment.
        */

$lines    = explode($eolChar, $string);
        $numLines = count($lines);
        foreach ($lines as $lineNum => $string) {
            if ($lineNum !== ($numLines - 1)) {
                $string .= $eolChar;
            }

$char     = 0;
            $numChars = strlen($string);

// We've started a new line, so process the indent.
            $space = $this->collectWhitespace($string, $char, $numChars);
            if ($space !== null) {
                $tokens[$stackPtr] = $space;
                $stackPtr++;
                if (PHP_CODESNIFFER_VERBOSITY > 1) {
                    $content = Util\Common::prepareForOutput($space['content']);
                    echo "\t\tCreate comment token: T_DOC_COMMENT_WHITESPACE => $content".PHP_EOL;
                }

$char += strlen($space['content']);
                if ($char === $numChars) {
                    break;
                }
            }

if ($string === '') {
                continue;
            }

if ($lineNum > 0 && $string[$char] === '*') {
                // This is a function or class doc block line.
                $char++;
                $tokens[$stackPtr] = [
                    'content' => '*',
                    'code'    => T_DOC_COMMENT_STAR,
                    'type'    => 'T_DOC_COMMENT_STAR',
                ];

$stackPtr++;

if (PHP_CODESNIFFER_VERBOSITY > 1) {
                    echo "\t\tCreate comment token: T_DOC_COMMENT_STAR => *".PHP_EOL;
                }
            }

// Now we are ready to process the actual content of the line.
            $lineTokens = $this->processLine($string, $eolChar, $char, $numChars);
            foreach ($lineTokens as $lineToken) {
                $tokens[$stackPtr] = $lineToken;
                if (PHP_CODESNIFFER_VERBOSITY > 1) {
                    $content = Util\Common::prepareForOutput($lineToken['content']);
                    $type    = $lineToken['type'];
                    echo "\t\tCreate comment token: $type => $content".PHP_EOL;
                }

if ($lineToken['code'] === T_DOC_COMMENT_TAG) {
                    $tokens[$openPtr]['comment_tags'][] = $stackPtr;
                }

$stackPtr++;
            }
        }//end foreach

$tokens[$stackPtr] = $closeTag;
        $tokens[$openPtr]['comment_closer'] = $stackPtr;
        if (PHP_CODESNIFFER_VERBOSITY > 1) {
            $content = Util\Common::prepareForOutput($closeTag['content']);
            echo "\t\tCreate comment token: T_DOC_COMMENT_CLOSE_TAG => $content".PHP_EOL;
        }

if (PHP_CODESNIFFER_VERBOSITY > 1) {
            echo "\t\t*** END COMMENT TOKENIZING ***".PHP_EOL;
        }

return $tokens;

}//end tokenizeString()

/**
     * Process a single line of a comment.
     *
     * @param string $string  The comment string being tokenized.
     * @param string $eolChar The EOL character to use for splitting strings.
     * @param int    $start   The position in the string to start processing.
     * @param int    $end     The position in the string to end processing.
     *
     * @return array
     */
    private function processLine($string, $eolChar, $start, $end)
    {
        $tokens = [];

// Collect content padding.
        $space = $this->collectWhitespace($string, $start, $end);
        if ($space !== null) {
            $tokens[] = $space;
            $start   += strlen($space['content']);
        }

if (isset($string[$start]) === false) {
            return $tokens;
        }

if ($string[$start] === '@') {
            // The content up until the first whitespace is the tag name.
            $matches = [];
            preg_match('/@[^\s]+/', $string, $matches, 0, $start);
            if (isset($matches[0]) === true
                && substr(strtolower($matches[0]), 0, 7) !== '@phpcs:'
            ) {
                $tagName  = $matches[0];
                $start   += strlen($tagName);
                $tokens[] = [
                    'content' => $tagName,
                    'code'    => T_DOC_COMMENT_TAG,
                    'type'    => 'T_DOC_COMMENT_TAG',
                ];

// Then there will be some whitespace.
                $space = $this->collectWhitespace($string, $start, $end);
                if ($space !== null) {
                    $tokens[] = $space;
                    $start   += strlen($space['content']);
                }
            }
        }//end if

// Process the rest of the line.
        $eol = strpos($string, $eolChar, $start);
        if ($eol === false) {
            $eol = $end;
        }

if ($eol > $start) {
            $tokens[] = [
                'content' => substr($string, $start, ($eol - $start)),
                'code'    => T_DOC_COMMENT_STRING,
                'type'    => 'T_DOC_COMMENT_STRING',
            ];
        }

if ($eol !== $end) {
            $tokens[] = [
                'content' => substr($string, $eol, strlen($eolChar)),
                'code'    => T_DOC_COMMENT_WHITESPACE,
                'type'    => 'T_DOC_COMMENT_WHITESPACE',
            ];
        }

return $tokens;

}//end processLine()

/**
     * Collect consecutive whitespace into a single token.
     *
     * @param string $string The comment string being tokenized.
     * @param int    $start  The position in the string to start processing.
     * @param int    $end    The position in the string to end processing.
     *
     * @return array|null
     */
    private function collectWhitespace($string, $start, $end)
    {
        $space = '';
        for ($start; $start < $end; $start++) {
            if ($string[$start] !== ' ' && $string[$start] !== "\t") {
                break;
            }

$space .= $string[$start];
        }

if ($space === '') {
            return null;
        }

$token = [
            'content' => $space,
            'code'    => T_DOC_COMMENT_WHITESPACE,
            'type'    => 'T_DOC_COMMENT_WHITESPACE',
        ];

return $token;

}//end collectWhitespace()

}//end class

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📝 Editando: Comment.php