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Map.php
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Map.php
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<?php declare(strict_types=1);
/**
* This file is part of the Phootwork package.
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @license MIT License
* @copyright Thomas Gossmann
*/
namespace phootwork\collection;
use Iterator;
use phootwork\lang\AbstractArray;
use phootwork\lang\Comparator;
use phootwork\lang\parts\SortAssocPart;
use phootwork\lang\Text;
/**
* Represents a Map
*
* @author Thomas Gossmann
*/
class Map extends AbstractCollection implements \ArrayAccess {
use SortAssocPart;
/**
* Creates a new Map
*
* @param array|Iterator $collection
*/
public function __construct(array|Iterator $collection = []) {
$this->setAll($collection);
}
/**
* Sets an element with the given key on that map
*
* @param string|int|Text $key
* @param mixed $element
*
* @return Map $this
*/
public function set(string|int|Text $key, mixed $element): self {
$key = is_int($key) ? $key : (string) $key;
$this->array[$key] = $element;
return $this;
}
/**
* Returns the element for the given key
*
* @param string|int|Text $key
*
* @return mixed
*/
public function get(string|int|Text $key): mixed {
$key = is_int($key) ? $key : (string) $key;
return $this->array[$key] ?? null;
}
/**
* Returns the key for the given value or null if not found
*
* @param mixed $value the value
*
* @return string|null
*/
public function getKey(mixed $value): ?string {
/**
* @var string $k
* @var mixed $v
*/
foreach ($this->array as $k => $v) {
if ($v === $value) {
return $k;
}
}
return null;
}
/**
* Sets many elements on that map
*
* @param array|Iterator $collection
*
* @return Map $this
*/
public function setAll(array|Iterator $collection): self {
/**
* @var string $key
* @var mixed $element
*/
foreach ($collection as $key => $element) {
$this->set($key, $element);
}
return $this;
}
/**
* Removes and returns an element from the map by the given key. Returns null if the key
* does not exist.
*
* @param string|Text $key
*
* @return $this
*/
public function remove(string|Text $key): self {
if (isset($this->array[(string) $key])) {
unset($this->array[(string) $key]);
}
return $this;
}
/**
* Returns all keys as Set
*
* @return Set the map's keys
*/
public function keys(): Set {
return new Set(array_keys($this->array));
}
/**
* Returns all values as ArrayList
*
* @return ArrayList the map's values
*/
public function values(): ArrayList {
return new ArrayList(array_values($this->array));
}
/**
* Returns whether the key exist.
*
* @param string|Text $key
*
* @return bool
*/
public function has(string|Text $key): bool {
return isset($this->array[(string) $key]);
}
/**
* Sorts the map
*
* @param Comparator|callable|null $cmp
*
* @return $this
*/
public function sort(Comparator|callable|null $cmp = null): AbstractArray {
return $this->sortAssoc($cmp);
}
/**
* Iterates the map and calls the callback function with the current key and value as parameters
*
* @param callable $callback
*/
public function each(callable $callback): void {
/**
* @var string $key
* @var mixed $value
*/
foreach ($this->array as $key => $value) {
$callback($key, $value);
}
}
/**
* Searches the collection with a given callback and returns the key for the first element if found.
*
* The callback function takes one or two parameters:
*
* function ($element [, $query]) {}
*
* The callback must return a boolean
* When it's passed, $query must be the first argument:
*
* - find($query, callback)
* - find(callback)
*
* @param array $arguments
*
* @return mixed|null the key or null if it hasn't been found
*/
public function findKey(mixed ...$arguments) {
/** @var mixed $index */
$index = count($arguments) === 1 ? $this->find($arguments[0]) : $this->find($arguments[0], $arguments[1]);
return $this->getKey($index);
}
/**
* Searches the collection with a given callback and returns the key for the last element if found.
*
* The callback function takes one or two parameters:
*
* function ($element [, $query]) {}
*
* The callback must return a boolean
* When it's passed, $query must be the first argument:
*
* - find($query, callback)
* - find(callback)
*
* @param array $arguments
*
* @return mixed|null the key or null if it hasn't been found
*/
public function findLastKey(mixed ...$arguments) {
/** @var mixed $index */
$index = count($arguments) === 1 ? $this->findLast($arguments[0]) : $this->findLast($arguments[0], $arguments[1]);
return $this->getKey($index);
}
/**
* @param mixed $offset
* @param mixed $value
*
* @internal
*/
public function offsetSet(mixed $offset, mixed $value): void {
/** @var string|null $offset */
if ($offset !== null) {
$this->array[$offset] = $value;
}
}
/**
* @param mixed $offset
*
* @return bool
*
* @internal
*/
public function offsetExists(mixed $offset): bool {
/** @var string $offset */
return isset($this->array[$offset]);
}
/**
* @param mixed $offset
*
* @internal
*/
public function offsetUnset(mixed $offset): void {
/** @var string $offset */
unset($this->array[$offset]);
}
/**
* @param mixed $offset
*
* @return mixed
*
* @internal
*/
public function offsetGet(mixed $offset): mixed {
/** @var string $offset */
return isset($this->array[$offset]) ? $this->array[$offset] : null;
}
}