IntoKeyword::__construct() - Code Metrics - Inspection of "366c169c53272926f629490c8e5a20dcfebee2a7" - phpmyadmin/sql-parser - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Branch — master (366c16)

by William

created 2020-08-16 13:39 UTC

IntoKeyword::__construct() A

↳ Parent: IntoKeyword

Complexity

Conditions	1
Paths	1

Size

Total Lines	14
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	6
c	1
b	0
f	0
nc	1
nop	6
dl	0
loc	14
rs	10
ccs	7
cts	7
cp	1
crap	1

<?php
/**
 * `INTO` keyword parser.
 */

declare(strict_types=1);

namespace PhpMyAdmin\SqlParser\Components;

use PhpMyAdmin\SqlParser\Component;
use PhpMyAdmin\SqlParser\Parser;
use PhpMyAdmin\SqlParser\Token;
use PhpMyAdmin\SqlParser\TokensList;
use function implode;
use function trim;

/**
 * `INTO` keyword parser.
 */
class IntoKeyword extends Component
{
    /**
     * FIELDS/COLUMNS Options for `SELECT...INTO` statements.
     *
     * @var array
     */
    public static $FIELDS_OPTIONS = [
        'TERMINATED BY' => [
            1,
            'expr',
        ],
        'OPTIONALLY' => 2,
        'ENCLOSED BY' => [
            3,
            'expr',
        ],
        'ESCAPED BY' => [
            4,
            'expr',
        ],
    ];

    /**
     * LINES Options for `SELECT...INTO` statements.
     *
     * @var array
     */
    public static $LINES_OPTIONS = [
        'STARTING BY' => [
            1,
            'expr',
        ],
        'TERMINATED BY' => [
            2,
            'expr',
        ],
    ];

    /**
     * Type of target (OUTFILE or SYMBOL).
     *
     * @var string
     */
    public $type;

    /**
     * The destination, which can be a table or a file.
     *
     * @var string|Expression
     */
    public $dest;

    /**
     * The name of the columns.
     *
     * @var array
     */
    public $columns;

    /**
     * The values to be selected into (SELECT .. INTO @var1).
     *
     * @var Expression[]
     */
    public $values;

    /**
     * Options for FIELDS/COLUMNS keyword.
     *
     * @see static::$FIELDS_OPTIONS
     *
     * @var OptionsArray
     */
    public $fields_options;

    /**
     * Whether to use `FIELDS` or `COLUMNS` while building.
     *
     * @var bool
     */
    public $fields_keyword;

    /**
     * Options for OPTIONS keyword.
     *
     * @see static::$LINES_OPTIONS
     *
     * @var OptionsArray
     */
    public $lines_options;

    /**
     * @param string            $type           type of destination (may be OUTFILE)
     * @param string|Expression $dest           actual destination
     * @param array             $columns        column list of destination
     * @param array             $values         selected fields
     * @param OptionsArray      $fields_options options for FIELDS/COLUMNS keyword
     * @param bool              $fields_keyword options for OPTIONS keyword
     */
    public function __construct(
        $type = null,
        $dest = null,
        $columns = null,
        $values = null,
        $fields_options = null,
        $fields_keyword = null
    ) {
        $this->type = $type;
        $this->dest = $dest;
        $this->columns = $columns;
        $this->values = $values;
        $this->fields_options = $fields_options;
        $this->fields_keyword = $fields_keyword;
    }

    /**
     * @param Parser     $parser  the parser that serves as context
     * @param TokensList $list    the list of tokens that are being parsed
     * @param array      $options parameters for parsing
     *
     * @return IntoKeyword
     */
    public static function parse(Parser $parser, TokensList $list, array $options = [])
    {
        $ret = new static();

        /**
         * The state of the parser.
         *
         * Below are the states of the parser.
         *
         *      0 -----------------------[ name ]----------------------> 1
         *      0 ---------------------[ OUTFILE ]---------------------> 2
         *
         *      1 ------------------------[ ( ]------------------------> (END)
         *
         *      2 ---------------------[ filename ]--------------------> 1
         *
         * @var int
         */
        $state = 0;

        for (; $list->idx < $list->count; ++$list->idx) {
            /**
             * Token parsed at this moment.
             *
             * @var Token
             */
            $token = $list->tokens[$list->idx];

            // End of statement.
            if ($token->type === Token::TYPE_DELIMITER) {
                break;
            }

            // Skipping whitespaces and comments.
            if (($token->type === Token::TYPE_WHITESPACE) || ($token->type === Token::TYPE_COMMENT)) {
                continue;
            }

            if (($token->type === Token::TYPE_KEYWORD) && ($token->flags & Token::FLAG_KEYWORD_RESERVED)) {
                if (($state === 0) && ($token->keyword === 'OUTFILE')) {
                    $ret->type = 'OUTFILE';
                    $state = 2;
                    continue;
                }

                // No other keyword is expected except for $state = 4, which expects `LINES`
                if ($state !== 4) {
                    break;
                }
            }

            if ($state === 0) {
                if ((isset($options['fromInsert'])
                    && $options['fromInsert'])
                    || (isset($options['fromReplace'])
                    && $options['fromReplace'])
                ) {
                    $ret->dest = Expression::parse(
                        $parser,
                        $list,
                        [
                            'parseField' => 'table',
                            'breakOnAlias' => true,
                        ]
                    );
                } else {
                    $ret->values = ExpressionArray::parse($parser, $list);
                }

                $state = 1;
            } elseif ($state === 1) {
                if (($token->type === Token::TYPE_OPERATOR) && ($token->value === '(')) {
                    $ret->columns = ArrayObj::parse($parser, $list)->values;
                    ++$list->idx;
                }

                break;
            } elseif ($state === 2) {
                $ret->dest = $token->value;

                $state = 3;
            } elseif ($state === 3) {
                $ret->parseFileOptions($parser, $list, $token->value);
                $state = 4;
            } elseif ($state === 4) {
                if ($token->type === Token::TYPE_KEYWORD && $token->keyword !== 'LINES') {
                    break;
                }

                $ret->parseFileOptions($parser, $list, $token->value);
                $state = 5;
            }
        }

        --$list->idx;

        return $ret;
    }

    public function parseFileOptions(Parser $parser, TokensList $list, $keyword = 'FIELDS')
    {
        ++$list->idx;

        if ($keyword === 'FIELDS' || $keyword === 'COLUMNS') {
            // parse field options
            $this->fields_options = OptionsArray::parse(
                $parser,
                $list,
                static::$FIELDS_OPTIONS
            );

            $this->fields_keyword = ($keyword === 'FIELDS');
        } else {
            // parse line options
            $this->lines_options = OptionsArray::parse(
                $parser,
                $list,
                static::$LINES_OPTIONS
            );
        }
    }

    /**
     * @param IntoKeyword $component the component to be built
     * @param array       $options   parameters for building
     *
     * @return string
     */
    public static function build($component, array $options = [])
    {
        if ($component->dest instanceof Expression) {
            $columns = ! empty($component->columns) ? '(`' . implode('`, `', $component->columns) . '`)' : '';

            return $component->dest . $columns;
        } elseif (isset($component->values)) {
            return ExpressionArray::build($component->values);
        }

        $ret = 'OUTFILE "' . $component->dest . '"';

        $fields_options_str = OptionsArray::build($component->fields_options);
        if (trim($fields_options_str) !== '') {
            $ret .= $component->fields_keyword ? ' FIELDS' : ' COLUMNS';
            $ret .= ' ' . $fields_options_str;
        }

        $lines_options_str = OptionsArray::build($component->lines_options, ['expr' => true]);
        if (trim($lines_options_str) !== '') {
            $ret .= ' LINES ' . $lines_options_str;
        }

        return $ret;
    }
}


1		<?php
2		/**
3		* `INTO` keyword parser.
4		*/
5
6		declare(strict_types=1);
7
8		namespace PhpMyAdmin\SqlParser\Components;
9
10		use PhpMyAdmin\SqlParser\Component;
11		use PhpMyAdmin\SqlParser\Parser;
12		use PhpMyAdmin\SqlParser\Token;
13		use PhpMyAdmin\SqlParser\TokensList;
14		use function implode;
15		use function trim;
16
17		/**
18		* `INTO` keyword parser.
19		*/
20		class IntoKeyword extends Component
21		{
22		/**
23		* FIELDS/COLUMNS Options for `SELECT...INTO` statements.
24		*
25		* @var array
26		*/
27		public static $FIELDS_OPTIONS = [
28		'TERMINATED BY' => [
29		1,
30		'expr',
31		],
32		'OPTIONALLY' => 2,
33		'ENCLOSED BY' => [
34		3,
35		'expr',
36		],
37		'ESCAPED BY' => [
38		4,
39		'expr',
40		],
41		];
42
43		/**
44		* LINES Options for `SELECT...INTO` statements.
45		*
46		* @var array
47		*/
48		public static $LINES_OPTIONS = [
49		'STARTING BY' => [
50		1,
51		'expr',
52		],
53		'TERMINATED BY' => [
54		2,
55		'expr',
56		],
57		];
58
59		/**
60		* Type of target (OUTFILE or SYMBOL).
61		*
62		* @var string
63		*/
64		public $type;
65
66		/**
67		* The destination, which can be a table or a file.
68		*
69		* @var string\|Expression
70		*/
71		public $dest;
72
73		/**
74		* The name of the columns.
75		*
76		* @var array
77		*/
78		public $columns;
79
80		/**
81		* The values to be selected into (SELECT .. INTO @var1).
82		*
83		* @var Expression[]
84		*/
85		public $values;
86
87		/**
88		* Options for FIELDS/COLUMNS keyword.
89		*
90		* @see static::$FIELDS_OPTIONS
91		*
92		* @var OptionsArray
93		*/
94		public $fields_options;
95
96		/**
97		* Whether to use `FIELDS` or `COLUMNS` while building.
98		*
99		* @var bool
100		*/
101		public $fields_keyword;
102
103		/**
104		* Options for OPTIONS keyword.
105		*
106		* @see static::$LINES_OPTIONS
107		*
108		* @var OptionsArray
109		*/
110		public $lines_options;
111
112		/**
113		* @param string $type type of destination (may be OUTFILE)
114		* @param string\|Expression $dest actual destination
115		* @param array $columns column list of destination
116		* @param array $values selected fields
117		* @param OptionsArray $fields_options options for FIELDS/COLUMNS keyword
118		* @param bool $fields_keyword options for OPTIONS keyword
119		*/
120	160	public function __construct(
121		$type = null,
122		$dest = null,
123		$columns = null,
124		$values = null,
125		$fields_options = null,
126		$fields_keyword = null
127		) {
128	160	$this->type = $type;
129	160	$this->dest = $dest;
130	160	$this->columns = $columns;
131	160	$this->values = $values;
132	160	$this->fields_options = $fields_options;
133	160	$this->fields_keyword = $fields_keyword;
134	160	}
135
136		/**
137		* @param Parser $parser the parser that serves as context
138		* @param TokensList $list the list of tokens that are being parsed
139		* @param array $options parameters for parsing
140		*
141		* @return IntoKeyword
142		*/
143	160	public static function parse(Parser $parser, TokensList $list, array $options = [])
144		{
145	160	$ret = new static();
146
147		/**
148		* The state of the parser.
149		*
150		* Below are the states of the parser.
151		*
152		* 0 -----------------------[ name ]----------------------> 1
153		* 0 ---------------------[ OUTFILE ]---------------------> 2
154		*
155		* 1 ------------------------[ ( ]------------------------> (END)
156		*
157		* 2 ---------------------[ filename ]--------------------> 1
158		*
159		* @var int
160		*/
161	160	$state = 0;
162
163	160	for (; $list->idx < $list->count; ++$list->idx) {
164		/**
165		* Token parsed at this moment.
166		*
167		* @var Token
168		*/
169	160	$token = $list->tokens[$list->idx];
170
171		// End of statement.
172	160	if ($token->type === Token::TYPE_DELIMITER) {
173	28	break;
174		}
175
176		// Skipping whitespaces and comments.
177	160	if (($token->type === Token::TYPE_WHITESPACE) \|\| ($token->type === Token::TYPE_COMMENT)) {
178	148	continue;
179		}
180
181	160	if (($token->type === Token::TYPE_KEYWORD) && ($token->flags & Token::FLAG_KEYWORD_RESERVED)) {
182	72	if (($state === 0) && ($token->keyword === 'OUTFILE')) {
183	40	$ret->type = 'OUTFILE';
184	40	$state = 2;
185	40	continue;
186		}
187
188		// No other keyword is expected except for $state = 4, which expects `LINES`
189	52	if ($state !== 4) {
190	48	break;
191		}
192		}
193
194	156	if ($state === 0) {
195	120	if ((isset($options['fromInsert'])
196	60	&& $options['fromInsert'])
197	60	\|\| (isset($options['fromReplace'])
198	120	&& $options['fromReplace'])
199		) {
200	112	$ret->dest = Expression::parse(
201	112	$parser,
202	112	$list,
203		[
204	112	'parseField' => 'table',
205		'breakOnAlias' => true,
206		]
207		);
208		} else {
209	8	$ret->values = ExpressionArray::parse($parser, $list);
210		}
211
212	120	$state = 1;
213	120	} elseif ($state === 1) {
214	84	if (($token->type === Token::TYPE_OPERATOR) && ($token->value === '(')) {
215	76	$ret->columns = ArrayObj::parse($parser, $list)->values;
216	76	++$list->idx;
217		}
218
219	84	break;
220	36	} elseif ($state === 2) {
221	36	$ret->dest = $token->value;
222
223	36	$state = 3;
224	16	} elseif ($state === 3) {
225	16	$ret->parseFileOptions($parser, $list, $token->value);
226	16	$state = 4;
227	16	} elseif ($state === 4) {
228	16	if ($token->type === Token::TYPE_KEYWORD && $token->keyword !== 'LINES') {
229	4	break;
230		}
231
232	12	$ret->parseFileOptions($parser, $list, $token->value);
233	12	$state = 5;
234		}
235		}
236
237	160	--$list->idx;
238
239	160	return $ret;
240		}
241
242	16	public function parseFileOptions(Parser $parser, TokensList $list, $keyword = 'FIELDS')
243		{
244	16	++$list->idx;
245
246	16	if ($keyword === 'FIELDS' \|\| $keyword === 'COLUMNS') {
247		// parse field options
248	16	$this->fields_options = OptionsArray::parse(
249	16	$parser,
250	8	$list,
251	16	static::$FIELDS_OPTIONS
252		);
253
254	16	$this->fields_keyword = ($keyword === 'FIELDS');
255		} else {
256		// parse line options
257	12	$this->lines_options = OptionsArray::parse(
258	12	$parser,
259	6	$list,
260	12	static::$LINES_OPTIONS
261		);
262		}
263	16	}
264
265		/**
266		* @param IntoKeyword $component the component to be built
267		* @param array $options parameters for building
268		*
269		* @return string
270		*/
271	36	public static function build($component, array $options = [])
272		{
273	36	if ($component->dest instanceof Expression) {
274	20	$columns = ! empty($component->columns) ? '(`' . implode('`, `', $component->columns) . '`)' : '';
275
276	20	return $component->dest . $columns;
277	16	} elseif (isset($component->values)) {
278	8	return ExpressionArray::build($component->values);
279		}
280
281	8	$ret = 'OUTFILE "' . $component->dest . '"';
282
283	8	$fields_options_str = OptionsArray::build($component->fields_options);
284	8	if (trim($fields_options_str) !== '') {
285	4	$ret .= $component->fields_keyword ? ' FIELDS' : ' COLUMNS';
286	4	$ret .= ' ' . $fields_options_str;
287		}
288
289	8	$lines_options_str = OptionsArray::build($component->lines_options, ['expr' => true]);
290	8	if (trim($lines_options_str) !== '') {
291	4	$ret .= ' LINES ' . $lines_options_str;
292		}
293
294	8	return $ret;
295		}
296		}
297

phpmyadmin / sql-parser

Branch — master (366c16)

IntoKeyword::__construct() A

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