TableOptions::parseOption() - Code Metrics - Inspection of "docker image for docker-hub" - graze/morphism - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#49)

by Burhan

created 2018-07-19 16:13 UTC

TableOptions::parseOption() D

↳ Parent: Project

Complexity

Conditions	26
Paths	48

Size

Total Lines	59
Code Lines	47

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	46
CRAP Score	26

Importance

Changes

Metric	Value
cc	26
eloc	47
nc	48
nop	2
dl	0
loc	59
rs	4.1666
c	0
b	0
f	0
ccs	46
cts	46
cp	1
crap	26

How to fix Long Method Complexity

<?php
namespace Graze\Morphism\Parse;

/**
 * Represents a set of table options - MIN_ROWS, PACK_KEYS, COMMENT, etc.
 */
class TableOptions
{
    /** @var string|null */
    public $engine = null;

    /** @var CollationInfo */
    public $collation = null;

    /**
     * @var array
     * maps option names to values (string|int|null)
     */
    public $options = [];

    /** @var string */
    private $defaultEngine = null;
    /** @var CollationInfo|null */
    private $defaultCollation = null;
    /** @var array */
    private $defaultOptions = [
        'AUTO_INCREMENT'  => null,
        'MIN_ROWS'        => 0,
        'MAX_ROWS'        => 0,
        'AVG_ROW_LENGTH'  => 0,
        'PACK_KEYS'       => 'DEFAULT',
        'CHECKSUM'        => '0',
        'DELAY_KEY_WRITE' => '0',
        'ROW_FORMAT'      => 'DEFAULT',
        'KEY_BLOCK_SIZE'  => 0,
        'COMMENT'         => '',
        'CONNECTION'      => '',
    ];

    /**
     * Constructor
     * @param CollationInfo $databaseCollation
     */
    public function __construct(CollationInfo $databaseCollation)
    {
        $this->collation = new CollationInfo;
        $this->defaultCollation = clone $databaseCollation;
    }

    /**
     * Set the default storage engine for the table to use in case the
     * ENGINE option is not supplied.
     *
     * @param string $engine e.g. 'InnoDB"
     */
    public function setDefaultEngine($engine)
    {
        $this->defaultEngine = self::normaliseEngine($engine);
    }

    /**
     * Parses table options from $stream.
     * @param TokenStream $stream
     */
    public function parse(TokenStream $stream)
    {
        $this->engine = $this->defaultEngine;
        $this->options = $this->defaultOptions;

        while (true) {
            $mark = $stream->getMark();
            $token = $stream->nextToken();
            if ($token->type !== Token::IDENTIFIER) {
                $stream->rewind($mark);
                break;
            }

            if ($token->eq(Token::IDENTIFIER, 'DEFAULT')) {
                $token = $stream->nextToken();
                if (!($token->type === Token::IDENTIFIER &&
                      in_array(strtoupper($token->text), ['CHARSET', 'CHARACTER', 'COLLATE']))
                ) {
                    throw new \RuntimeException("Expected CHARSET, CHARACTER SET or COLLATE");
                }
            }

            $this->parseOption($stream, strtoupper($token->text));
        }

        if (!$this->collation->isSpecified()) {
            $this->collation = clone $this->defaultCollation;
        }
    }

    /**
     * @param TokenStream $stream
     * @param string $option
     */
    private function parseOption(TokenStream $stream, $option)
    {
        switch ($option) {
            case 'ENGINE':
            case 'COLLATE':
            case 'CHARSET':
                $this->parseIdentifier($stream, $option);
                break;

            case 'CHARACTER':
                $stream->expect(Token::IDENTIFIER, 'SET');
                $this->parseIdentifier($stream, 'CHARSET');
                break;

            case 'AUTO_INCREMENT':
            case 'AVG_ROW_LENGTH':
            case 'KEY_BLOCK_SIZE':
            case 'MAX_ROWS':
            case 'MIN_ROWS':
                $this->parseNumber($stream, $option);
                break;

            case 'CHECKSUM':
            case 'DELAY_KEY_WRITE':
                $this->parseEnum($stream, $option, ['0', '1']);
                break;

            case 'PACK_KEYS':
                $this->parseEnum($stream, $option, ['DEFAULT', '0', '1']);
                break;

            case 'DATA':
            case 'INDEX':
                $stream->expect(Token::IDENTIFIER, 'DIRECTORY');
                // fall through //
            case 'COMMENT':
            case 'CONNECTION':
            case 'PASSWORD':
                $this->parseString($stream, $option);
                break;

            case 'INSERT_METHOD':
                $this->parseEnum($stream, $option, ['NO', 'FIRST', 'LAST']);
                throw new \RuntimeException("$option is not currently supported by this tool");

            case 'ROW_FORMAT':
                $this->parseEnum($stream, $option, ['DEFAULT', 'DYNAMIC', 'FIXED', 'COMPRESSED', 'REDUNDANT', 'COMPACT']);
                break;

            case 'PARTITION':
            case 'STATS_AUTO_RECALC':
            case 'STATS_PERSISTENT':
            case 'STATS_SAMPLE_PAGES':
            case 'TABLESPACE':
            case 'UNION':
                throw new \RuntimeException("$option is not currently supported by this tool");

            default:
                throw new \RuntimeException("Unknown table option: $option");
        }
    }

    /**
     * @param string $engine
     * @return string
     */
    private static function normaliseEngine($engine)
    {
        $engine = strtoupper($engine);
        switch ($engine) {
            case 'INNODB':
                return 'InnoDB';
            case 'MYISAM':
                return 'MyISAM';
            default:
                return $engine;
        }
    }

    /**
     * @param string $option
     * @param string $value
     */
    private function setOption($option, $value)
    {
        switch ($option) {
            case 'ENGINE':
                $this->engine = self::normaliseEngine($value);
                break;

            case 'CHARSET':
                if (strtoupper($value) === 'DEFAULT') {
                    $this->collation = new CollationInfo();
                } else {
                    $this->collation->setCharset($value);
                }
                break;

            case 'COLLATE':
                if (strtoupper($value) === 'DEFAULT') {
                    $this->collation = new CollationInfo();
                } else {
                    $this->collation->setCollation($value);
                }
                break;

            default:
                $this->options[$option] = $value;
                break;
        }
    }

    /**
     * @param TokenStream $stream
     * @param string $option
     */
    private function parseIdentifier(TokenStream $stream, $option)
    {
        $stream->consume([[Token::SYMBOL, '=']]);
        $token = $stream->nextToken();
        if ($token->isEof()) {
            throw new \RuntimeException("Unexpected end-of-file");
        }
        if (!in_array($token->type, [Token::IDENTIFIER, Token::STRING])) {
            throw new \RuntimeException("Bad table option value: '$token->text'");
        }
        $this->setOption($option, strtolower($token->text));
    }

    /**
     * @param TokenStream $stream
     * @param string $option
     */
    private function parseNumber(TokenStream $stream, $option)
    {
        $stream->consume([[Token::SYMBOL, '=']]);
        $this->setOption($option, $stream->expectNumber());
    }

    /**
     * @param TokenStream $stream
     * @param string $option
     * @param array $enums
     */
    private function parseEnum(TokenStream $stream, $option, array $enums)
    {
        $stream->consume([[Token::SYMBOL, '=']]);
        $token = $stream->nextToken();
        if (!in_array($token->type, [Token::IDENTIFIER, Token::NUMBER])) {
            throw new \RuntimeException("Bad table option value");
        }
        $value = strtoupper($token->text);
        if (!in_array($value, $enums)) {
            throw new \RuntimeException("Invalid option value, expected " . implode(' | ', $enums));
        }
        $this->setOption($option, $value);
    }

    /**
     * @param TokenStream $stream
     * @param string $option
     */
    private function parseString(TokenStream $stream, $option)
    {
        $stream->consume([[Token::SYMBOL, '=']]);
        $this->setOption($option, $stream->expectString());
    }

    /**
     * Returns an SQL fragment to set the options as part of a CREATE TABLE statement.
     * Note that the AUTO_INCREMENT option is explicitly *not* included in the output.
     */
    public function toString()
    {
        $items = [];

        $items[] = "ENGINE=" . $this->engine;

        // (omit AUTO_INCREMENT)

        $collation = $this->collation;
        if ($collation->isSpecified()) {
            $items[] = "DEFAULT CHARSET=" . $collation->getCharset();
            if (!$collation->isDefaultCollation()) {
                $items[] = "COLLATE=" . $collation->getCollation();
            }
        }

        foreach ([
            'MIN_ROWS',
            'MAX_ROWS',
            'AVG_ROW_LENGTH',
            'PACK_KEYS',
            'CHECKSUM',
            'DELAY_KEY_WRITE',
            'ROW_FORMAT',
            'KEY_BLOCK_SIZE',
            'COMMENT',
            'CONNECTION',
        ] as $option) {
            if ($this->options[$option] !== $this->defaultOptions[$option]) {
                $value = $this->options[$option];
                if (in_array($option, ['COMMENT', 'CONNECTION'])) {
                    $value = Token::escapeString($value);
                }
                $items[] = "$option=$value";
            }
        }

        return implode(' ', $items);
    }

    /**
     * Returns an SQL fragment to transform these table options into those
     * specified by $that as part of an ALTER TABLE statement.
     *
     * The empty string is returned if nothing needs to be done.
     *
     * $flags           |
     * :----------------|
     * 'alterEngine'    | (bool) include 'ALTER TABLE ... ENGINE=' [default: true]
     *
     * @param TableOptions $that
     * @param array $flags
     * @return string
     */
    public function diff(TableOptions $that, array $flags = [])
    {
        $flags += [
            'alterEngine' => true,
        ];

        $alters = [];
        if ($flags['alterEngine']) {
            if (strcasecmp($this->engine, $that->engine) !== 0) {
                $alters[] = "ENGINE=" . $that->engine;
            }
        }

        $thisCollation = $this->collation->isSpecified()
            ? $this->collation->getCollation()
            : null;
        $thatCollation = $that->collation->isSpecified()
            ? $that->collation->getCollation()
            : null;
        if ($thisCollation !== $thatCollation) {
            // TODO - what if !$that->collation->isSpecified()

            if (!is_null($thatCollation)) {
                $alters[] = "DEFAULT CHARSET=" . $that->collation->getCharset();
                if (!$that->collation->isDefaultCollation()) {
                    $alters[] = "COLLATE=" . $thatCollation;
                }
            }
        }

        foreach ([
            'MIN_ROWS',
            'MAX_ROWS',
            'AVG_ROW_LENGTH',
            'PACK_KEYS',
            'CHECKSUM',
            'DELAY_KEY_WRITE',

            // The storage engine may pick a different row format when
            // ROW_FORMAT=DEFAULT (or no ROW_FORMAT)/ is specified, depending
            // on whether any variable length columns are present. Since we
            // don't (currently) explicitly specify ROW_FORMAT in any of our
            // tables, I'm choosing to ignore it for the time being...
        //  'ROW_FORMAT',
            'KEY_BLOCK_SIZE',
            'COMMENT',
            'CONNECTION',
        ] as $option) {
            $thisValue = $this->options[$option];
            $thatValue = $that->options[$option];
            if (in_array($option, ['COMMENT', 'CONNECTION'])) {
                $thisValue = Token::escapeString($thisValue);
                $thatValue = Token::escapeString($thatValue);
            }

            if ($thisValue !== $thatValue) {
                $alters[] = "$option=$thatValue";
            }
        }

        return implode(' ', $alters);
    }
}


1		<?php
2		namespace Graze\Morphism\Parse;
3
4		/**
5		* Represents a set of table options - MIN_ROWS, PACK_KEYS, COMMENT, etc.
6		*/
7		class TableOptions
8		{
9		/** @var string\|null */
10		public $engine = null;
11
12		/** @var CollationInfo */
13		public $collation = null;
14
15		/**
16		* @var array
17		* maps option names to values (string\|int\|null)
18		*/
19		public $options = [];
20
21		/** @var string */
22		private $defaultEngine = null;
23		/** @var CollationInfo\|null */
24		private $defaultCollation = null;
25		/** @var array */
26		private $defaultOptions = [
27		'AUTO_INCREMENT' => null,
28		'MIN_ROWS' => 0,
29		'MAX_ROWS' => 0,
30		'AVG_ROW_LENGTH' => 0,
31		'PACK_KEYS' => 'DEFAULT',
32		'CHECKSUM' => '0',
33		'DELAY_KEY_WRITE' => '0',
34		'ROW_FORMAT' => 'DEFAULT',
35		'KEY_BLOCK_SIZE' => 0,
36		'COMMENT' => '',
37		'CONNECTION' => '',
38		];
39
40		/**
41		* Constructor
42		* @param CollationInfo $databaseCollation
43		*/
44	196	public function __construct(CollationInfo $databaseCollation)
45		{
46	196	$this->collation = new CollationInfo;
47	196	$this->defaultCollation = clone $databaseCollation;
48	196	}
49
50		/**
51		* Set the default storage engine for the table to use in case the
52		* ENGINE option is not supplied.
53		*
54		* @param string $engine e.g. 'InnoDB"
55		*/
56	194	public function setDefaultEngine($engine)
57		{
58	194	$this->defaultEngine = self::normaliseEngine($engine);
59	194	}
60
61		/**
62		* Parses table options from $stream.
63		* @param TokenStream $stream
64		*/
65	177	public function parse(TokenStream $stream)
66		{
67	177	$this->engine = $this->defaultEngine;
68	177	$this->options = $this->defaultOptions;
69
70	177	while (true) {
71	177	$mark = $stream->getMark();
72	177	$token = $stream->nextToken();
73	177	if ($token->type !== Token::IDENTIFIER) {
74	162	$stream->rewind($mark);
75	162	break;
76		}
77
78	102	if ($token->eq(Token::IDENTIFIER, 'DEFAULT')) {
79	4	$token = $stream->nextToken();
80	4	if (!($token->type === Token::IDENTIFIER &&
81	4	in_array(strtoupper($token->text), ['CHARSET', 'CHARACTER', 'COLLATE']))
82		) {
83	1	throw new \RuntimeException("Expected CHARSET, CHARACTER SET or COLLATE");
84		}
85		}
86
87	101	$this->parseOption($stream, strtoupper($token->text));
88		}
89
90	162	if (!$this->collation->isSpecified()) {
91	154	$this->collation = clone $this->defaultCollation;
92		}
93	162	}
94
95		/**
96		* @param TokenStream $stream
97		* @param string $option
98		*/
99	101	private function parseOption(TokenStream $stream, $option)
100		{
101		switch ($option) {
102	101	case 'ENGINE':
103	92	case 'COLLATE':
104	86	case 'CHARSET':
105	22	$this->parseIdentifier($stream, $option);
106	20	break;
107
108	79	case 'CHARACTER':
109	2	$stream->expect(Token::IDENTIFIER, 'SET');
110	2	$this->parseIdentifier($stream, 'CHARSET');
111	2	break;
112
113	77	case 'AUTO_INCREMENT':
114	72	case 'AVG_ROW_LENGTH':
115	67	case 'KEY_BLOCK_SIZE':
116	62	case 'MAX_ROWS':
117	57	case 'MIN_ROWS':
118	25	$this->parseNumber($stream, $option);
119	25	break;
120
121	52	case 'CHECKSUM':
122	47	case 'DELAY_KEY_WRITE':
123	10	$this->parseEnum($stream, $option, ['0', '1']);
124	10	break;
125
126	42	case 'PACK_KEYS':
127	6	$this->parseEnum($stream, $option, ['DEFAULT', '0', '1']);
128	6	break;
129
130	36	case 'DATA':
131	35	case 'INDEX':
132	2	$stream->expect(Token::IDENTIFIER, 'DIRECTORY');
133		// fall through //
134	34	case 'COMMENT':
135	28	case 'CONNECTION':
136	22	case 'PASSWORD':
137	15	$this->parseString($stream, $option);
138	15	break;
139
140	21	case 'INSERT_METHOD':
141	4	$this->parseEnum($stream, $option, ['NO', 'FIRST', 'LAST']);
142	3	throw new \RuntimeException("$option is not currently supported by this tool");
143
144	17	case 'ROW_FORMAT':
145	10	$this->parseEnum($stream, $option, ['DEFAULT', 'DYNAMIC', 'FIXED', 'COMPRESSED', 'REDUNDANT', 'COMPACT']);
146	9	break;
147
148	7	case 'PARTITION':
149	6	case 'STATS_AUTO_RECALC':
150	5	case 'STATS_PERSISTENT':
151	4	case 'STATS_SAMPLE_PAGES':
152	3	case 'TABLESPACE':
153	2	case 'UNION':
154	6	throw new \RuntimeException("$option is not currently supported by this tool");
155
156		default:
157	1	throw new \RuntimeException("Unknown table option: $option");
158		}
159	87	}
160
161		/**
162		* @param string $engine
163		* @return string
164		*/
165	195	private static function normaliseEngine($engine)
166		{
167	195	$engine = strtoupper($engine);
168		switch ($engine) {
169	195	case 'INNODB':
170	193	return 'InnoDB';
171	9	case 'MYISAM':
172	7	return 'MyISAM';
173		default:
174	3	return $engine;
175		}
176		}
177
178		/**
179		* @param string $option
180		* @param string $value
181		*/
182	90	private function setOption($option, $value)
183		{
184		switch ($option) {
185	90	case 'ENGINE':
186	7	$this->engine = self::normaliseEngine($value);
187	7	break;
188
189	83	case 'CHARSET':
190	9	if (strtoupper($value) === 'DEFAULT') {
191	2	$this->collation = new CollationInfo();
192		} else {
193	8	$this->collation->setCharset($value);
194		}
195	9	break;
196
197	74	case 'COLLATE':
198	6	if (strtoupper($value) === 'DEFAULT') {
199	1	$this->collation = new CollationInfo();
200		} else {
201	5	$this->collation->setCollation($value);
202		}
203	6	break;
204
205		default:
206	68	$this->options[$option] = $value;
207	68	break;
208		}
209	90	}
210
211		/**
212		* @param TokenStream $stream
213		* @param string $option
214		*/
215	24	private function parseIdentifier(TokenStream $stream, $option)
216		{
217	24	$stream->consume([[Token::SYMBOL, '=']]);
218	24	$token = $stream->nextToken();
219	24	if ($token->isEof()) {
220	1	throw new \RuntimeException("Unexpected end-of-file");
221		}
222	23	if (!in_array($token->type, [Token::IDENTIFIER, Token::STRING])) {
223	1	throw new \RuntimeException("Bad table option value: '$token->text'");
224		}
225	22	$this->setOption($option, strtolower($token->text));
226	22	}
227
228		/**
229		* @param TokenStream $stream
230		* @param string $option
231		*/
232	25	private function parseNumber(TokenStream $stream, $option)
233		{
234	25	$stream->consume([[Token::SYMBOL, '=']]);
235	25	$this->setOption($option, $stream->expectNumber());
236	25	}
237
238		/**
239		* @param TokenStream $stream
240		* @param string $option
241		* @param array $enums
242		*/
243	30	private function parseEnum(TokenStream $stream, $option, array $enums)
244		{
245	30	$stream->consume([[Token::SYMBOL, '=']]);
246	30	$token = $stream->nextToken();
247	30	if (!in_array($token->type, [Token::IDENTIFIER, Token::NUMBER])) {
248	1	throw new \RuntimeException("Bad table option value");
249		}
250	29	$value = strtoupper($token->text);
251	29	if (!in_array($value, $enums)) {
252	1	throw new \RuntimeException("Invalid option value, expected " . implode(' \| ', $enums));
253		}
254	28	$this->setOption($option, $value);
255	28	}
256
257		/**
258		* @param TokenStream $stream
259		* @param string $option
260		*/
261	15	private function parseString(TokenStream $stream, $option)
262		{
263	15	$stream->consume([[Token::SYMBOL, '=']]);
264	15	$this->setOption($option, $stream->expectString());
265	15	}
266
267		/**
268		* Returns an SQL fragment to set the options as part of a CREATE TABLE statement.
269		* Note that the AUTO_INCREMENT option is explicitly not included in the output.
270		*/
271	98	public function toString()
272		{
273	98	$items = [];
274
275	98	$items[] = "ENGINE=" . $this->engine;
276
277		// (omit AUTO_INCREMENT)
278
279	98	$collation = $this->collation;
280	98	if ($collation->isSpecified()) {
281	7	$items[] = "DEFAULT CHARSET=" . $collation->getCharset();
282	7	if (!$collation->isDefaultCollation()) {
283	2	$items[] = "COLLATE=" . $collation->getCollation();
284		}
285		}
286
287		foreach ([
288	98	'MIN_ROWS',
289		'MAX_ROWS',
290		'AVG_ROW_LENGTH',
291		'PACK_KEYS',
292		'CHECKSUM',
293		'DELAY_KEY_WRITE',
294		'ROW_FORMAT',
295		'KEY_BLOCK_SIZE',
296		'COMMENT',
297		'CONNECTION',
298		] as $option) {
299	98	if ($this->options[$option] !== $this->defaultOptions[$option]) {
300	17	$value = $this->options[$option];
301	17	if (in_array($option, ['COMMENT', 'CONNECTION'])) {
302	4	$value = Token::escapeString($value);
303		}
304	98	$items[] = "$option=$value";
305		}
306		}
307
308	98	return implode(' ', $items);
309		}
310
311		/**
312		* Returns an SQL fragment to transform these table options into those
313		* specified by $that as part of an ALTER TABLE statement.
314		*
315		* The empty string is returned if nothing needs to be done.
316		*
317		* $flags \|
318		* :----------------\|
319		* 'alterEngine' \| (bool) include 'ALTER TABLE ... ENGINE=' [default: true]
320		*
321		* @param TableOptions $that
322		* @param array $flags
323		* @return string
324		*/
325	64	public function diff(TableOptions $that, array $flags = [])
326		{
327		$flags += [
328	64	'alterEngine' => true,
329		];
330
331	64	$alters = [];
332	64	if ($flags['alterEngine']) {
333	62	if (strcasecmp($this->engine, $that->engine) !== 0) {
334	4	$alters[] = "ENGINE=" . $that->engine;
335		}
336		}
337
338	64	$thisCollation = $this->collation->isSpecified()
339	3	? $this->collation->getCollation()
340	64	: null;
341	64	$thatCollation = $that->collation->isSpecified()
342	4	? $that->collation->getCollation()
343	64	: null;
344	64	if ($thisCollation !== $thatCollation) {
345		// TODO - what if !$that->collation->isSpecified()
		0 ignored issues – show Coding Style Best Practice introduced 2017-07-07 13:35 UTC by Report Bug Copy Issue Report Comments for TODO tasks are often forgotten in the code; it might be better to use a dedicated issue tracker. Loading history... Unused Code Comprehensibility introduced 2017-07-07 13:35 UTC by Report Bug Copy Issue Report `42%` 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...
346	6	if (!is_null($thatCollation)) {
347	4	$alters[] = "DEFAULT CHARSET=" . $that->collation->getCharset();
348	4	if (!$that->collation->isDefaultCollation()) {
349	2	$alters[] = "COLLATE=" . $thatCollation;
350		}
351		}
352		}
353
354		foreach ([
355	64	'MIN_ROWS',
356		'MAX_ROWS',
357		'AVG_ROW_LENGTH',
358		'PACK_KEYS',
359		'CHECKSUM',
360		'DELAY_KEY_WRITE',
361
362		// The storage engine may pick a different row format when
363		// ROW_FORMAT=DEFAULT (or no ROW_FORMAT)/ is specified, depending
364		// on whether any variable length columns are present. Since we
365		// don't (currently) explicitly specify ROW_FORMAT in any of our
366		// tables, I'm choosing to ignore it for the time being...
367		// 'ROW_FORMAT',
368		'KEY_BLOCK_SIZE',
369		'COMMENT',
370		'CONNECTION',
371		] as $option) {
372	64	$thisValue = $this->options[$option];
373	64	$thatValue = $that->options[$option];
374	64	if (in_array($option, ['COMMENT', 'CONNECTION'])) {
375	64	$thisValue = Token::escapeString($thisValue);
376	64	$thatValue = Token::escapeString($thatValue);
377		}
378
379	64	if ($thisValue !== $thatValue) {
380	64	$alters[] = "$option=$thatValue";
381		}
382		}
383
384	64	return implode(' ', $alters);
385		}
386		}
387

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Pull Request — master (#49)

TableOptions::parseOption() D

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