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<?php
/**
* This file is part of the ramsey/collection library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
*/
declare(strict_types=1);
namespace Ramsey\Collection\Map;
use Ramsey\Collection\AbstractArray;
use Ramsey\Collection\Exception\InvalidArgumentException;
use function array_key_exists;
use function array_keys;
use function in_array;
/**
* This class provides a basic implementation of `MapInterface`, to minimize the
* effort required to implement this interface.
*
* @template T
* @template-extends AbstractArray<T>
* @template-implements MapInterface<T>
*/
abstract class AbstractMap extends AbstractArray implements MapInterface
{
/**
* @inheritDoc
*/
public function offsetSet($offset, $value): void
{
if ($offset === null) {
throw new InvalidArgumentException(
'Map elements are key/value pairs; a key must be provided for '
. 'value ' . var_export($value, true)
);
}
$this->data[$offset] = $value;
}
/**
* @inheritDoc
*/
public function containsKey($key): bool
{
return array_key_exists($key, $this->data);
}
/**
* @inheritDoc
*/
public function containsValue($value): bool
{
return in_array($value, $this->data, true);
}
/**
* @inheritDoc
*/
public function keys(): array
{
return array_keys($this->data);
}
/**
* @inheritDoc
*/
public function get($key, $defaultValue = null)
{
if (!$this->containsKey($key)) {
return $defaultValue;
}
return $this[$key];
}
/**
* @inheritDoc
*/
public function put($key, $value)
{
$previousValue = $this->get($key);
$this[$key] = $value;
return $previousValue;
}
/**
* @inheritDoc
*/
public function putIfAbsent($key, $value)
{
$currentValue = $this->get($key);
if ($currentValue === null) {
$this[$key] = $value;
}
return $currentValue;
}
/**
* @inheritDoc
*/
public function remove($key)
{
$previousValue = $this->get($key);
unset($this[$key]);
return $previousValue;
}
/**
* @inheritDoc
*/
public function removeIf($key, $value): bool
{
if ($this->get($key) === $value) {
unset($this[$key]);
return true;
}
return false;
}
/**
* @inheritDoc
*/
public function replace($key, $value)
{
$currentValue = $this->get($key);
if ($this->containsKey($key)) {
$this[$key] = $value;
}
return $currentValue;
}
/**
* @inheritDoc
*/
public function replaceIf($key, $oldValue, $newValue): bool
{
if ($this->get($key) === $oldValue) {
$this[$key] = $newValue;
return true;
}
return false;
}
}
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