RegularParser::beginBacktrack() - Code Metrics - Inspection of "RegularParser improvements" - thunderer/Shortcode - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#72)

by Tomasz

created 2018-12-08 23:38 UTC

RegularParser::beginBacktrack() A

↳ Parent: RegularParser

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	5
ccs	4
cts	4
cp	1
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	0
crap	1

<?php
namespace Thunder\Shortcode\Parser;

use Thunder\Shortcode\Shortcode\ParsedShortcode;
use Thunder\Shortcode\Shortcode\Shortcode;
use Thunder\Shortcode\Syntax\CommonSyntax;
use Thunder\Shortcode\Syntax\SyntaxInterface;
use Thunder\Shortcode\Utility\RegexBuilderUtility;

/**
 * @author Tomasz Kowalczyk <[email protected]>
 */
final class RegularParser implements ParserInterface
{
    private $lexerRegex;
    private $nameRegex;
    private $tokens;
    private $tokensCount;
    private $position;
    /** @var int[] */
    private $backtracks;
    private $lastBacktrack;
    private $tokenMap;

    const TOKEN_OPEN = 1;
    const TOKEN_CLOSE = 2;
    const TOKEN_MARKER = 3;
    const TOKEN_SEPARATOR = 4;
    const TOKEN_DELIMITER = 5;
    const TOKEN_STRING = 6;
    const TOKEN_WS = 7;

    public function __construct(SyntaxInterface $syntax = null)
    {
        $this->lexerRegex = $this->prepareLexer($syntax ?: new CommonSyntax());
        $this->nameRegex = '~^'.RegexBuilderUtility::buildNameRegex().'$~us';
    }

    /**
     * @param string $text
     *
     * @return ParsedShortcode[]
     */
    public function parse($text)
    {
        $this->tokens = $this->tokenize($text);
        $this->backtracks = array();
        $this->lastBacktrack = 0;
        $this->position = 0;
        $this->tokensCount = \count($this->tokens);

        $shortcodes = array();
        while($this->position < $this->tokensCount) {
            while($this->position < $this->tokensCount && false === $this->lookahead(self::TOKEN_OPEN)) {
                $this->position++;
            }
            $names = array();
            $this->beginBacktrack();
            $matches = $this->shortcode($names);
            if(\is_array($matches)) {
                foreach($matches as $shortcode) {
                    $shortcodes[] = $shortcode;
                }
            }
        }

        return $shortcodes;
    }

    private function getObject($name, $parameters, $bbCode, $offset, $content, $text)
    {
        return new ParsedShortcode(new Shortcode($name, $parameters, $content, $bbCode), $text, $offset);
    }

    /* --- RULES ----------------------------------------------------------- */

    private function shortcode(array &$names)
    {
        $name = null;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
        $offset = null;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

        if(!$this->match(self::TOKEN_OPEN, false)) { return false; }
        $offset = $this->tokens[$this->position - 1][2];
        $this->match(self::TOKEN_WS, false);
        if('' === $name = $this->match(self::TOKEN_STRING, false)) { return false; }
        if($this->lookahead(self::TOKEN_STRING)) { return false; }
        if(1 !== preg_match($this->nameRegex, $name, $matches)) { return false; }
        $this->match(self::TOKEN_WS, false);
        // bbCode
        $bbCode = $this->match(self::TOKEN_SEPARATOR, true) ? $this->value() : null;
        if(false === $bbCode) { return false; }
        // parameters
        if(false === ($parameters = $this->parameters())) { return false; }

        // self-closing
        if($this->match(self::TOKEN_MARKER, true)) {
            if(!$this->match(self::TOKEN_CLOSE, false)) { return false; }

            return array($this->getObject($name, $parameters, $bbCode, $offset, null, $this->getBacktrack()));
        }

        // just-closed or with-content
        if(!$this->match(self::TOKEN_CLOSE, false)) { return false; }
        $this->beginBacktrack();
        $names[] = $name;
        list($content, $shortcodes, $closingName) = $this->content($names);
        if(null !== $closingName && $closingName !== $name) {
            array_pop($names);
            array_pop($this->backtracks);
            array_pop($this->backtracks);

            return $closingName;
        }
        if(false === $content || $closingName !== $name) {
            $this->backtrack(false);
            $text = $this->backtrack(false);

            return array_merge(array($this->getObject($name, $parameters, $bbCode, $offset, null, $text)), $shortcodes);
        }
        $content = $this->getBacktrack();
        if(!$this->close($names)) { return false; }

        return array($this->getObject($name, $parameters, $bbCode, $offset, $content, $this->getBacktrack()));
    }

    private function content(array &$names)
    {
        $content = '';
        $shortcodes = array();
        $closingName = null;

        while($this->position < $this->tokensCount) {
            while($this->position < $this->tokensCount && false === $this->lookahead(self::TOKEN_OPEN)) {

                $content .= $this->match(null, true);
            }

            $this->beginBacktrack();
            $matchedShortcodes = $this->shortcode($names);
            if(\is_string($matchedShortcodes)) {
                $closingName = $matchedShortcodes;
                break;
            }
            if(\is_array($matchedShortcodes)) {
                foreach($matchedShortcodes as $matchedShortcode) {
                    $shortcodes[] = $matchedShortcode;
                }
                continue;
            }
            $this->backtrack();

            $this->beginBacktrack();
            if(false !== ($closingName = $this->close($names))) {
                if(null === $content) { $content = ''; }
                $this->backtrack();
                $shortcodes = array();
                break;
            }
            $closingName = null;
            $this->backtrack();

            $content .= $this->match(null, false);
        }

        return array($this->position < $this->tokensCount ? $content : false, $shortcodes, $closingName);
    }

    private function close(array &$names)
    {
        if(!$this->match(self::TOKEN_OPEN, true)) { return false; }
        if(!$this->match(self::TOKEN_MARKER, true)) { return false; }
        if(!$closingName = $this->match(self::TOKEN_STRING, true)) { return false; }
        if(!$this->match(self::TOKEN_CLOSE, false)) { return false; }

        return \in_array($closingName, $names, true) ? $closingName : false;
    }

    private function parameters()
    {
        $parameters = array();

        while(true) {
            $name = null;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

            $this->match(self::TOKEN_WS, false);
            if($this->lookahead(self::TOKEN_MARKER) || $this->lookahead(self::TOKEN_CLOSE)) { break; }
            if(!$name = $this->match(self::TOKEN_STRING, true)) { return false; }
            if(!$this->match(self::TOKEN_SEPARATOR, true)) { $parameters[$name] = null; continue; }
            if(false === ($value = $this->value())) { return false; }
            $this->match(self::TOKEN_WS, false);

            $parameters[$name] = $value;
        }

        return $parameters;
    }

    private function value()
    {
        $value = '';

        if($this->match(self::TOKEN_DELIMITER, false)) {
            while($this->position < $this->tokensCount && false === $this->lookahead(self::TOKEN_DELIMITER)) {

                $value .= $this->match(null, false);
            }

            return $this->match(self::TOKEN_DELIMITER, false) ? $value : false;
        }

        if($tmp = $this->match(self::TOKEN_STRING, false)) {
            $value .= $tmp;
            while($tmp = $this->match(self::TOKEN_STRING, false)) {
                $value .= $tmp;
            }

            return $value;
        }

        return false;
    }

    /* --- PARSER ---------------------------------------------------------- */

    private function beginBacktrack()
    {
        $this->backtracks[] = $this->position;
        $this->lastBacktrack = $this->position;
    }

    private function getBacktrack()
    {
        $position = array_pop($this->backtracks);
        $backtrack = '';
        for($i = $position; $i < $this->position; $i++) {

            $backtrack .= $this->tokens[$i][1];
        }

        return $backtrack;
    }

    private function backtrack($modifyPosition = true)
    {
        $position = array_pop($this->backtracks);
        if($modifyPosition) {
            $this->position = $position;
        }

        $backtrack = '';
        for($i = $position; $i < $this->lastBacktrack; $i++) {

            $backtrack .= $this->tokens[$i][1];
        }
        $this->lastBacktrack = $position;

        return $backtrack;
    }

    private function lookahead($type)
    {
        return $this->position < $this->tokensCount && (empty($type) || $this->tokens[$this->position][0] === $type);
    }

    private function match($type, $ws)
    {
        if($this->position >= $this->tokensCount) {
            return '';
        }

        $token = $this->tokens[$this->position];
        if(!empty($type) && $token[0] !== $type) {
            return '';
        }

        $this->position++;
        if($ws && $this->position < $this->tokensCount && $this->tokens[$this->position][0] === self::TOKEN_WS) {
            $this->position++;
        }

        return $token[1];
    }

    /* --- LEXER ----------------------------------------------------------- */

    private function tokenize($text)
    {
        preg_match_all($this->lexerRegex, $text, $matches, PREG_OFFSET_CAPTURE);
        if(preg_last_error() !== PREG_NO_ERROR) {
            throw new \RuntimeException(sprintf('PCRE failure `%s`.', preg_last_error()));
        }

        $tokens = array();
        $position = 0;
        foreach($matches[0] as $match) {
            $type = isset($this->tokenMap[$match[0]])
                ? $this->tokenMap[$match[0]]
                : (ctype_space($match[0]) ? self::TOKEN_WS : self::TOKEN_STRING);
            $tokens[] = array($type, $match[0], $position);
            $position += mb_strlen($match[0], 'utf-8'); // FIXME match[1]

        }

        return $tokens;
    }

    private function prepareLexer(SyntaxInterface $syntax)
    {
        $this->tokenMap = array(
            $syntax->getOpeningTag() => self::TOKEN_OPEN,
            $syntax->getClosingTag() => self::TOKEN_CLOSE,
            $syntax->getClosingTagMarker() => self::TOKEN_MARKER,
            $syntax->getParameterValueSeparator() => self::TOKEN_SEPARATOR,
            $syntax->getParameterValueDelimiter() => self::TOKEN_DELIMITER,
        );

        $quote = function($text) {
            return preg_replace('/(.)/us', '\\\\$0', $text);
        };
        $symbols = array_map($quote, array_keys($this->tokenMap));

        return '~('.implode('|', $symbols).'|\s+|\\\\.|[\w-]+|.)~us';
    }
}


1			<?php
2			namespace Thunder\Shortcode\Parser;
3
4			use Thunder\Shortcode\Shortcode\ParsedShortcode;
5			use Thunder\Shortcode\Shortcode\Shortcode;
6			use Thunder\Shortcode\Syntax\CommonSyntax;
7			use Thunder\Shortcode\Syntax\SyntaxInterface;
8			use Thunder\Shortcode\Utility\RegexBuilderUtility;
9
10			/**
11			* @author Tomasz Kowalczyk <[email protected]>
12			*/
13			final class RegularParser implements ParserInterface
14			{
15			private $lexerRegex;
16			private $nameRegex;
17			private $tokens;
18			private $tokensCount;
19			private $position;
20			/** @var int[] */
21			private $backtracks;
22			private $lastBacktrack;
23			private $tokenMap;
24
25			const TOKEN_OPEN = 1;
26			const TOKEN_CLOSE = 2;
27			const TOKEN_MARKER = 3;
28			const TOKEN_SEPARATOR = 4;
29			const TOKEN_DELIMITER = 5;
30			const TOKEN_STRING = 6;
31			const TOKEN_WS = 7;
32
33	14		public function __construct(SyntaxInterface $syntax = null)
34			{
35	14		$this->lexerRegex = $this->prepareLexer($syntax ?: new CommonSyntax());
36	14		$this->nameRegex = '~^'.RegexBuilderUtility::buildNameRegex().'$~us';
37	14		}
38
39			/**
40			* @param string $text
41			*
42			* @return ParsedShortcode[]
43			*/
44	57		public function parse($text)
45			{
46	57		$this->tokens = $this->tokenize($text);
47	57		$this->backtracks = array();
48	57		$this->lastBacktrack = 0;
49	57		$this->position = 0;
50	57		$this->tokensCount = \count($this->tokens);
51
52	57		$shortcodes = array();
53	57		while($this->position < $this->tokensCount) {
54	56		while($this->position < $this->tokensCount && false === $this->lookahead(self::TOKEN_OPEN)) {
55	24		$this->position++;
56			}
57	56		$names = array();
58	56		$this->beginBacktrack();
59	56		$matches = $this->shortcode($names);
60	56		if(\is_array($matches)) {
61	48		foreach($matches as $shortcode) {
62	48		$shortcodes[] = $shortcode;
63			}
64			}
65			}
66
67	57		return $shortcodes;
68			}
69
70	48		private function getObject($name, $parameters, $bbCode, $offset, $content, $text)
71			{
72	48		return new ParsedShortcode(new Shortcode($name, $parameters, $content, $bbCode), $text, $offset);
73			}
74
75			/* --- RULES ----------------------------------------------------------- */
76
77	56		private function shortcode(array &$names)
78			{
79	56		$name = null;
			0 ignored issues – show Unused Code introduced 2018-12-08 23:39 UTC by Report Bug Copy Issue Report `$name` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
80	56		$offset = null;
			0 ignored issues – show Unused Code introduced 2018-12-08 23:39 UTC by Report Bug Copy Issue Report `$offset` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
81
82	56		if(!$this->match(self::TOKEN_OPEN, false)) { return false; }
83	56		$offset = $this->tokens[$this->position - 1][2];
84	56		$this->match(self::TOKEN_WS, false);
85	56		if('' === $name = $this->match(self::TOKEN_STRING, false)) { return false; }
86	53		if($this->lookahead(self::TOKEN_STRING)) { return false; }
87	53		if(1 !== preg_match($this->nameRegex, $name, $matches)) { return false; }
88	52		$this->match(self::TOKEN_WS, false);
89			// bbCode
90	52		$bbCode = $this->match(self::TOKEN_SEPARATOR, true) ? $this->value() : null;
91	52		if(false === $bbCode) { return false; }
92			// parameters
93	51		if(false === ($parameters = $this->parameters())) { return false; }
94
95			// self-closing
96	49		if($this->match(self::TOKEN_MARKER, true)) {
97	16		if(!$this->match(self::TOKEN_CLOSE, false)) { return false; }
98
99	15		return array($this->getObject($name, $parameters, $bbCode, $offset, null, $this->getBacktrack()));
100			}
101
102			// just-closed or with-content
103	37		if(!$this->match(self::TOKEN_CLOSE, false)) { return false; }
104	37		$this->beginBacktrack();
105	37		$names[] = $name;
106	37		list($content, $shortcodes, $closingName) = $this->content($names);
107	37		if(null !== $closingName && $closingName !== $name) {
108	6		array_pop($names);
109	6		array_pop($this->backtracks);
110	6		array_pop($this->backtracks);
111
112	6		return $closingName;
113			}
114	37		if(false === $content \|\| $closingName !== $name) {
115	24		$this->backtrack(false);
116	24		$text = $this->backtrack(false);
117
118	24		return array_merge(array($this->getObject($name, $parameters, $bbCode, $offset, null, $text)), $shortcodes);
119			}
120	19		$content = $this->getBacktrack();
121	19		if(!$this->close($names)) { return false; }
122
123	19		return array($this->getObject($name, $parameters, $bbCode, $offset, $content, $this->getBacktrack()));
124			}
125
126	37		private function content(array &$names)
127			{
128	37		$content = '';
129	37		$shortcodes = array();
130	37		$closingName = null;
131
132	37		while($this->position < $this->tokensCount) {
133	28	View Code Duplication	while($this->position < $this->tokensCount && false === $this->lookahead(self::TOKEN_OPEN)) {
			0 ignored issues – show Duplication introduced 2016-04-25 21:25 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
134	24		$content .= $this->match(null, true);
135			}
136
137	28		$this->beginBacktrack();
138	28		$matchedShortcodes = $this->shortcode($names);
139	28		if(\is_string($matchedShortcodes)) {
140	6		$closingName = $matchedShortcodes;
141	6		break;
142			}
143	28		if(\is_array($matchedShortcodes)) {
144	15		foreach($matchedShortcodes as $matchedShortcode) {
145	15		$shortcodes[] = $matchedShortcode;
146			}
147	15		continue;
148			}
149	22		$this->backtrack();
150
151	22		$this->beginBacktrack();
152	22		if(false !== ($closingName = $this->close($names))) {
153	19		if(null === $content) { $content = ''; }
154	19		$this->backtrack();
155	19		$shortcodes = array();
156	19		break;
157			}
158	8		$closingName = null;
159	8		$this->backtrack();
160
161	8		$content .= $this->match(null, false);
162			}
163
164	37		return array($this->position < $this->tokensCount ? $content : false, $shortcodes, $closingName);
165			}
166
167	22		private function close(array &$names)
168			{
169	22		if(!$this->match(self::TOKEN_OPEN, true)) { return false; }
170	20		if(!$this->match(self::TOKEN_MARKER, true)) { return false; }
171	20		if(!$closingName = $this->match(self::TOKEN_STRING, true)) { return false; }
172	20		if(!$this->match(self::TOKEN_CLOSE, false)) { return false; }
173
174	20		return \in_array($closingName, $names, true) ? $closingName : false;
175			}
176
177	51		private function parameters()
178			{
179	51		$parameters = array();
180
181	51		while(true) {
182	51		$name = null;
			0 ignored issues – show Unused Code introduced 2018-12-08 23:39 UTC by Report Bug Copy Issue Report `$name` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
183
184	51		$this->match(self::TOKEN_WS, false);
185	51		if($this->lookahead(self::TOKEN_MARKER) \|\| $this->lookahead(self::TOKEN_CLOSE)) { break; }
186	27		if(!$name = $this->match(self::TOKEN_STRING, true)) { return false; }
187	26		if(!$this->match(self::TOKEN_SEPARATOR, true)) { $parameters[$name] = null; continue; }
188	25		if(false === ($value = $this->value())) { return false; }
189	24		$this->match(self::TOKEN_WS, false);
190
191	24		$parameters[$name] = $value;
192			}
193
194	49		return $parameters;
195			}
196
197	27		private function value()
198			{
199	27		$value = '';
200
201	27		if($this->match(self::TOKEN_DELIMITER, false)) {
202	19	View Code Duplication	while($this->position < $this->tokensCount && false === $this->lookahead(self::TOKEN_DELIMITER)) {
			0 ignored issues – show Duplication introduced 2016-04-25 21:25 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
203	19		$value .= $this->match(null, false);
204			}
205
206	19		return $this->match(self::TOKEN_DELIMITER, false) ? $value : false;
207			}
208
209	14		if($tmp = $this->match(self::TOKEN_STRING, false)) {
210	13		$value .= $tmp;
211	13		while($tmp = $this->match(self::TOKEN_STRING, false)) {
212	2		$value .= $tmp;
213			}
214
215	13		return $value;
216			}
217
218	1		return false;
219			}
220
221			/* --- PARSER ---------------------------------------------------------- */
222
223	56		private function beginBacktrack()
224			{
225	56		$this->backtracks[] = $this->position;
226	56		$this->lastBacktrack = $this->position;
227	56		}
228
229	30		private function getBacktrack()
230			{
231	30		$position = array_pop($this->backtracks);
232	30		$backtrack = '';
233	30	View Code Duplication	for($i = $position; $i < $this->position; $i++) {
			0 ignored issues – show Duplication introduced 2018-12-08 20:25 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
234	30		$backtrack .= $this->tokens[$i][1];
235			}
236
237	30		return $backtrack;
238			}
239
240	37		private function backtrack($modifyPosition = true)
241			{
242	37		$position = array_pop($this->backtracks);
243	37		if($modifyPosition) {
244	22		$this->position = $position;
245			}
246
247	37		$backtrack = '';
248	37	View Code Duplication	for($i = $position; $i < $this->lastBacktrack; $i++) {
			0 ignored issues – show Duplication introduced 2018-12-08 20:25 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
249	24		$backtrack .= $this->tokens[$i][1];
250			}
251	37		$this->lastBacktrack = $position;
252
253	37		return $backtrack;
254			}
255
256	56		private function lookahead($type)
257			{
258	56		return $this->position < $this->tokensCount && (empty($type) \|\| $this->tokens[$this->position][0] === $type);
259			}
260
261	56		private function match($type, $ws)
262			{
263	56		if($this->position >= $this->tokensCount) {
264	20		return '';
265			}
266
267	56		$token = $this->tokens[$this->position];
268	56		if(!empty($type) && $token[0] !== $type) {
269	56		return '';
270			}
271
272	56		$this->position++;
273	56		if($ws && $this->position < $this->tokensCount && $this->tokens[$this->position][0] === self::TOKEN_WS) {
274	17		$this->position++;
275			}
276
277	56		return $token[1];
278			}
279
280			/* --- LEXER ----------------------------------------------------------- */
281
282	57		private function tokenize($text)
283			{
284	57		preg_match_all($this->lexerRegex, $text, $matches, PREG_OFFSET_CAPTURE);
285	57		if(preg_last_error() !== PREG_NO_ERROR) {
286			throw new \RuntimeException(sprintf('PCRE failure `%s`.', preg_last_error()));
287			}
288
289	57		$tokens = array();
290	57		$position = 0;
291	57		foreach($matches[0] as $match) {
292	56		$type = isset($this->tokenMap[$match[0]])
293	56		? $this->tokenMap[$match[0]]
294	56		: (ctype_space($match[0]) ? self::TOKEN_WS : self::TOKEN_STRING);
295	56		$tokens[] = array($type, $match[0], $position);
296	56		$position += mb_strlen($match[0], 'utf-8'); // FIXME match[1]
			0 ignored issues – show Unused Code Comprehensibility introduced 2018-12-08 23:39 UTC by Report Bug Copy Issue Report `43%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
297			}
298
299	57		return $tokens;
300			}
301
302	14		private function prepareLexer(SyntaxInterface $syntax)
303			{
304	14		$this->tokenMap = array(
305	14		$syntax->getOpeningTag() => self::TOKEN_OPEN,
306	14		$syntax->getClosingTag() => self::TOKEN_CLOSE,
307	14		$syntax->getClosingTagMarker() => self::TOKEN_MARKER,
308	14		$syntax->getParameterValueSeparator() => self::TOKEN_SEPARATOR,
309	14		$syntax->getParameterValueDelimiter() => self::TOKEN_DELIMITER,
310			);
311
312	14		$quote = function($text) {
313	14		return preg_replace('/(.)/us', '\\\\$0', $text);
314	14		};
315	14		$symbols = array_map($quote, array_keys($this->tokenMap));
316
317	14		return '~('.implode('\|', $symbols).'\|\s+\|\\\\.\|[\w-]+\|.)~us';
318			}
319			}
320

thunderer / Shortcode

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Pull Request — master (#72)

RegularParser::beginBacktrack() A

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