ItemList::fromString() - Code Metrics - Inspection of "Implement imap client" - genkgo/mail - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#42)

by Frederik

created 2018-03-01 09:56 UTC

ItemList::fromString() D

↳ Parent: ItemList

Complexity

Conditions	23
Paths	81

Size

Total Lines	109
Code Lines	71

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	109
rs	4.6303
c	0
b	0
f	0
cc	23
eloc	71
nc	81
nop	1

How to fix Long Method Complexity

<?php
declare(strict_types=1);

namespace Genkgo\Mail\Protocol\Imap\MessageData;

use Genkgo\Mail\Protocol\Imap\MessageData\Item\NameItem;
use Genkgo\Mail\Protocol\Imap\MessageData\Item\PartialItem;
use Genkgo\Mail\Protocol\Imap\MessageData\Item\SectionItem;

final class ItemList
{
    /**
     *
     */
    private CONST STATE_NONE = 0;
    /**
     *
     */
    private CONST STATE_NAME = 1;
    /**
     *
     */
    private CONST STATE_SECTION = 2;
    /**
     *
     */
    private CONST STATE_PARTIAL = 3;
    /**
     *
     */
    private CONST STATE_OCTET = 4;
    /**
     * @var array
     */
    private $list = [];
    /**
     * @var int
     */
    private $size;
    /**
     * @var string
     */
    private $body;

    /**
     * ItemList constructor.
     * @param array $list
     */
    public function __construct(array $list = [])
    {
        $this->list = $list;
    }

    /**
     * @param ItemInterface $item
     * @return ItemList
     */
    public function withItem(ItemInterface $item): self
    {
        $clone = clone $this;
        $clone->list[$item->getName()] = $item;
        return $clone;
    }

    /**
     * @param int $size
     * @return ItemList
     */
    public function withOctet(int $size): self
    {
        $clone = clone $this;
        $clone->size = $size;
        return $clone;
    }

    /**
     * @param string $body
     * @return ItemList
     */
    public function withBody(string $body): self
    {
        $clone = clone $this;
        $clone->body = $body;
        return $clone;
    }

    /**
     * @return string
     */
    public function getBody(): string
    {
        return $this->body;
    }

    /**
     * @param string $name
     * @return ItemInterface
     */
    public function getItem(string $name): ItemInterface
    {
        if (!isset($this->list[$name])) {
            throw new \UnexpectedValueException(
                sprintf('Unknown name %s', $name)
            );
        }

        return $this->list[$name];
    }

    /**
     * @return ItemInterface
     */
    public function last(): ItemInterface
    {
        if (empty($this->list)) {
            throw new \OutOfBoundsException('Cannot return last item from empty list');
        }

        return end($this->list);
    }

    /**
     * @return string
     */
    public function __toString(): string
    {
        $items = implode(
            ' ',
            array_map(
                function (ItemInterface $item) {
                    return (string)$item;
                },
                $this->list
            )
        );

        if ($this->size) {
            $items .= ' {' . $this->size . '}';
        }

        if ($this->body) {
            $items .= "\n" . $this->body;
        }

        if (count($this->list) > 1 || $this->body) {
            return '(' . $items . ')';
        }

        return $items;
    }

    /**
     * @param string $serializedList
     * @return ItemList
     */
    public static function fromString(string $serializedList): self
    {
        $list = new self();

        $index = 0;
        $state = self::STATE_NAME;
        $sequence = '';

        if ($serializedList === '') {
            throw new \InvalidArgumentException('Cannot create list from empty string');
        }

        if ($serializedList[0] === '(' && $serializedList[-1] === ')') {
            $serializedList = substr($serializedList, 1, -1);
        }

        while (isset($serializedList[$index])) {
            $char = $serializedList[$index];
            $sequence .= $char;

            switch ($char) {
                case '[':
                    if ($state !== self::STATE_NAME) {
                        throw new \InvalidArgumentException('Invalid character [ found');
                    }

                    $list = $list->withItem(new NameItem(substr($sequence, 0, -1)));
                    $sequence = '[';
                    $state = self::STATE_SECTION;
                    break;
                case ']':
                    if ($state !== self::STATE_SECTION) {
                        throw new \InvalidArgumentException('Invalid character ] found');
                    }

                    $list = $list->withItem(
                        new SectionItem($list->last(), SectionList::fromString($sequence))
                    );

                    $sequence = '';
                    $state = self::STATE_NAME;
                    break;
                case '<':
                    if ($state !== self::STATE_NAME) {
                        throw new \InvalidArgumentException('Invalid character < found');
                    }

                    $state = self::STATE_PARTIAL;
                    break;
                case '>':
                    if ($state !== self::STATE_PARTIAL) {
                        throw new \InvalidArgumentException('Invalid character > found');
                    }

                    $list = $list->withItem(
                        new PartialItem($list->last(), Partial::fromString($sequence))
                    );

                    $sequence = '';
                    $state = self::STATE_NAME;
                    break;
                case '{':
                    if ($state !== self::STATE_NONE) {
                        throw new \InvalidArgumentException('Invalid character { found');
                    }

                    $state = self::STATE_OCTET;
                    break;
                case '}':
                    if ($state !== self::STATE_OCTET) {
                        throw new \InvalidArgumentException('Invalid characters } found');
                    }

                    $list = $list->withOctet((int)substr($sequence, 1, -1));
                    $sequence = '';

                    $state = self::STATE_NAME;
                    break;
                case ' ':
                    if ($sequence === ' ') {
                        $state = self::STATE_NONE;
                    }

                    if ($state === self::STATE_NONE) {
                        $sequence = '';
                    }

                    if ($state === self::STATE_NAME) {
                        $list = $list->withItem(new NameItem(substr($sequence, 0, -1)));
                        $sequence = '';
                        $state = self::STATE_NONE;
                    }

                    break;
                case "\n":
                    $list = $list->withBody(substr($serializedList, $index + 1));
                    $sequence = '';
                    break 2;
            }

            $index++;
        }

        if ($sequence) {
            $list = $list->withItem(new NameItem($sequence));
        }

        return $list;
    }
}

1			<?php
2			declare(strict_types=1);
3
4			namespace Genkgo\Mail\Protocol\Imap\MessageData;
5
6			use Genkgo\Mail\Protocol\Imap\MessageData\Item\NameItem;
7			use Genkgo\Mail\Protocol\Imap\MessageData\Item\PartialItem;
8			use Genkgo\Mail\Protocol\Imap\MessageData\Item\SectionItem;
9
10			final class ItemList
11			{
12			/**
13			*
14			*/
15			private CONST STATE_NONE = 0;
16			/**
17			*
18			*/
19			private CONST STATE_NAME = 1;
20			/**
21			*
22			*/
23			private CONST STATE_SECTION = 2;
24			/**
25			*
26			*/
27			private CONST STATE_PARTIAL = 3;
28			/**
29			*
30			*/
31			private CONST STATE_OCTET = 4;
32			/**
33			* @var array
34			*/
35			private $list = [];
36			/**
37			* @var int
38			*/
39			private $size;
40			/**
41			* @var string
42			*/
43			private $body;
44
45			/**
46			* ItemList constructor.
47			* @param array $list
48			*/
49			public function __construct(array $list = [])
50			{
51			$this->list = $list;
52			}
53
54			/**
55			* @param ItemInterface $item
56			* @return ItemList
57			*/
58			public function withItem(ItemInterface $item): self
59			{
60			$clone = clone $this;
61			$clone->list[$item->getName()] = $item;
62			return $clone;
63			}
64
65			/**
66			* @param int $size
67			* @return ItemList
68			*/
69			public function withOctet(int $size): self
70			{
71			$clone = clone $this;
72			$clone->size = $size;
73			return $clone;
74			}
75
76			/**
77			* @param string $body
78			* @return ItemList
79			*/
80			public function withBody(string $body): self
81			{
82			$clone = clone $this;
83			$clone->body = $body;
84			return $clone;
85			}
86
87			/**
88			* @return string
89			*/
90			public function getBody(): string
91			{
92			return $this->body;
93			}
94
95			/**
96			* @param string $name
97			* @return ItemInterface
98			*/
99			public function getItem(string $name): ItemInterface
100			{
101			if (!isset($this->list[$name])) {
102			throw new \UnexpectedValueException(
103			sprintf('Unknown name %s', $name)
104			);
105			}
106
107			return $this->list[$name];
108			}
109
110			/**
111			* @return ItemInterface
112			*/
113			public function last(): ItemInterface
114			{
115			if (empty($this->list)) {
116			throw new \OutOfBoundsException('Cannot return last item from empty list');
117			}
118
119			return end($this->list);
120			}
121
122			/**
123			* @return string
124			*/
125			public function __toString(): string
126			{
127			$items = implode(
128			' ',
129			array_map(
130			function (ItemInterface $item) {
131			return (string)$item;
132			},
133			$this->list
134			)
135			);
136
137			if ($this->size) {
138			$items .= ' {' . $this->size . '}';
139			}
140
141			if ($this->body) {
142			$items .= "\n" . $this->body;
143			}
144
145			if (count($this->list) > 1 \|\| $this->body) {
146			return '(' . $items . ')';
147			}
148
149			return $items;
150			}
151
152			/**
153			* @param string $serializedList
154			* @return ItemList
155			*/
156			public static function fromString(string $serializedList): self
157			{
158			$list = new self();
159
160			$index = 0;
161			$state = self::STATE_NAME;
162			$sequence = '';
163
164			if ($serializedList === '') {
165			throw new \InvalidArgumentException('Cannot create list from empty string');
166			}
167
168			if ($serializedList[0] === '(' && $serializedList[-1] === ')') {
169			$serializedList = substr($serializedList, 1, -1);
170			}
171
172			while (isset($serializedList[$index])) {
173			$char = $serializedList[$index];
174			$sequence .= $char;
175
176			switch ($char) {
177			case '[':
178			if ($state !== self::STATE_NAME) {
179			throw new \InvalidArgumentException('Invalid character [ found');
180			}
181
182			$list = $list->withItem(new NameItem(substr($sequence, 0, -1)));
183			$sequence = '[';
184			$state = self::STATE_SECTION;
185			break;
186			case ']':
187			if ($state !== self::STATE_SECTION) {
188			throw new \InvalidArgumentException('Invalid character ] found');
189			}
190
191			$list = $list->withItem(
192			new SectionItem($list->last(), SectionList::fromString($sequence))
193			);
194
195			$sequence = '';
196			$state = self::STATE_NAME;
197			break;
198			case '<':
199			if ($state !== self::STATE_NAME) {
200			throw new \InvalidArgumentException('Invalid character < found');
201			}
202
203			$state = self::STATE_PARTIAL;
204			break;
205			case '>':
206			if ($state !== self::STATE_PARTIAL) {
207			throw new \InvalidArgumentException('Invalid character > found');
208			}
209
210			$list = $list->withItem(
211			new PartialItem($list->last(), Partial::fromString($sequence))
212			);
213
214			$sequence = '';
215			$state = self::STATE_NAME;
216			break;
217			case '{':
218			if ($state !== self::STATE_NONE) {
219			throw new \InvalidArgumentException('Invalid character { found');
220			}
221
222			$state = self::STATE_OCTET;
223			break;
224			case '}':
225			if ($state !== self::STATE_OCTET) {
226			throw new \InvalidArgumentException('Invalid characters } found');
227			}
228
229			$list = $list->withOctet((int)substr($sequence, 1, -1));
230			$sequence = '';
231
232			$state = self::STATE_NAME;
233			break;
234			case ' ':
235			if ($sequence === ' ') {
236			$state = self::STATE_NONE;
237			}
238
239			if ($state === self::STATE_NONE) {
240			$sequence = '';
241			}
242
243			if ($state === self::STATE_NAME) {
244			$list = $list->withItem(new NameItem(substr($sequence, 0, -1)));
245			$sequence = '';
246			$state = self::STATE_NONE;
247			}
248
249			break;
250			case "\n":
251			$list = $list->withBody(substr($serializedList, $index + 1));
252			$sequence = '';
253			break 2;
254			}
255
256			$index++;
257			}
258
259			if ($sequence) {
260			$list = $list->withItem(new NameItem($sequence));
261			}
262
263			return $list;
264			}
265			}

genkgo / mail

Pull Request — master (#42)

ItemList::fromString() D

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

Long Method

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