File Toolkit/Collection/ListTrait.php

1:	<?php declare(strict_types=1);
2:
3:	namespace Salient\Collection;
4:
5:	use Salient\Contract\Collection\ListInterface;
6:	use Salient\Contract\Core\Arrayable;
7:	use Salient\Utility\Exception\InvalidArgumentTypeException;
8:	use InvalidArgumentException;
9:
10:	/**
11:	* Implements ListInterface
12:	*
13:	* Unless otherwise noted, {@see ListTrait} methods operate on one instance of
14:	* the class. Immutable lists should use {@see ImmutableListTrait} instead.
15:	*
16:	* @see ListInterface
17:	*
18:	* @todo Remove `@template TKey of int` when PHPStan propagates trait templates
19:	* properly
20:	*
21:	* @api
22:	*
23:	* @template TKey of int
24:	* @template TValue
25:	*
26:	* @phpstan-require-implements ListInterface
27:	*/
28:	trait ListTrait
29:	{
30:	/** @use CollectionTrait<int,TValue> */
31:	use CollectionTrait {
32:	getItems as private _getItems;
33:	replaceItems as private _replaceItems;
34:	}
35:
36:	/**
37:	* @inheritDoc
38:	*/
39:	public function add($value)
40:	{
41:	$items = $this->Items;
42:	$items[] = $value;
43:	return $this->maybeReplaceItems($items);
44:	}
45:
46:	/**
47:	* @inheritDoc
48:	*/
49:	public function set($key, $value)
50:	{
51:	$this->checkKey($key);
52:	$items = $this->Items;
53:	$items[$key] = $value;
54:	return $this->maybeReplaceItems($items);
55:	}
56:
57:	/**
58:	* @inheritDoc
59:	*/
60:	public function merge($items)
61:	{
62:	$_items = $this->getItems($items);
63:	if (!$_items) {
64:	return $this;
65:	}
66:	$items = array_merge($this->Items, $_items);
67:	return $this->maybeReplaceItems($items);
68:	}
69:
70:	/**
71:	* @inheritDoc
72:	*/
73:	public function push(...$item)
74:	{
75:	if (!$item) {
76:	return $this;
77:	}
78:	$clone = $this->maybeClone();
79:	array_push($clone->Items, ...$item);
80:	return $clone;
81:	}
82:
83:	/**
84:	* @inheritDoc
85:	*/
86:	public function unshift(...$item)
87:	{
88:	if (!$item) {
89:	return $this;
90:	}
91:	$clone = $this->maybeClone();
92:	array_unshift($clone->Items, ...$item);
93:	return $clone;
94:	}
95:
96:	/**
97:	* @param int\|null $offset
98:	* @param TValue $value
99:	*/
100:	public function offsetSet($offset, $value): void
101:	{
102:	if ($offset === null) {
103:	$this->Items[] = $value;
104:	return;
105:	}
106:	$this->checkKey($offset, 'offset');
107:	$this->Items[$offset] = $value;
108:	}
109:
110:	/**
111:	* @param int $offset
112:	*/
113:	public function offsetUnset($offset): void
114:	{
115:	if (
116:	!array_key_exists($offset, $this->Items)
117:	\|\| $offset === array_key_last($this->Items)
118:	) {
119:	unset($this->Items[$offset]);
120:	return;
121:	}
122:	$items = $this->Items;
123:	unset($items[$offset]);
124:	$this->Items = array_values($items);
125:	}
126:
127:	/**
128:	* @param Arrayable<array-key,TValue>\|iterable<array-key,TValue> $items
129:	* @return list<TValue>
130:	*/
131:	protected function getItems($items): array
132:	{
133:	return array_values($this->_getItems($items));
134:	}
135:
136:	/**
137:	* @param array<int,TValue> $items
138:	* @return static
139:	*/
140:	protected function replaceItems(array $items, ?bool $getClone = null)
141:	{
142:	$key = array_key_last($items);
143:	if ($key === null \|\| $key === count($items) - 1) {
144:	return $this->_replaceItems($items, $getClone);
145:	}
146:	return $this->_replaceItems(array_values($items), $getClone);
147:	}
148:
149:	/**
150:	* @param array-key $key
151:	* @throws InvalidArgumentException if `$key` is not an integer, or does not
152:	* resolve to an existing item and is not the next numeric key in the list.
153:	*/
154:	private function checkKey($key, string $argument = 'key'): void
155:	{
156:	if (!is_int($key)) {
157:	throw new InvalidArgumentTypeException(1, $argument, 'int', $key);
158:	}
159:
160:	if (
161:	!array_key_exists($key, $this->Items)
162:	&& $key !== count($this->Items)
163:	) {
164:	throw new InvalidArgumentException(sprintf(
165:	'Item cannot be added with key: %d',
166:	$key,
167:	));
168:	}
169:	}
170:	}
171:

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