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chandler-11 The Singleton Pattern Must Be a Class

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Closes #11.
This commit is contained in:
Ilya Bakhlin 2022-01-01 18:49:27 +01:00
parent 3ed115a9ed
commit b457218e26
3 changed files with 73 additions and 14 deletions
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29
composer.lock generated
View file

@ -4,7 +4,7 @@
"Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies", "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
"This file is @generated automatically" "This file is @generated automatically"
], ],
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"packages": [ "packages": [
{ {
"name": "doctrine/lexer", "name": "doctrine/lexer",
@ -2130,16 +2130,16 @@
}, },
{ {
"name": "symfony/translation", "name": "symfony/translation",
"version": "v5.4.1", "version": "v5.4.2",
"source": { "source": {
"type": "git", "type": "git",
"url": "https://github.com/symfony/translation.git", "url": "https://github.com/symfony/translation.git",
"reference": "8c82cd35ed861236138d5ae1c78c0c7ebcd62107" "reference": "ff8bb2107b6a549dc3c5dd9c498dcc82c9c098ca"
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"reference": "8c82cd35ed861236138d5ae1c78c0c7ebcd62107", "reference": "ff8bb2107b6a549dc3c5dd9c498dcc82c9c098ca",
"shasum": "" "shasum": ""
}, },
"require": { "require": {
@ -2207,7 +2207,7 @@
"description": "Provides tools to internationalize your application", "description": "Provides tools to internationalize your application",
"homepage": "https://symfony.com", "homepage": "https://symfony.com",
"support": { "support": {
"source": "https://github.com/symfony/translation/tree/v5.4.1" "source": "https://github.com/symfony/translation/tree/v5.4.2"
}, },
"funding": [ "funding": [
{ {
@ -2223,7 +2223,7 @@
"type": "tidelift" "type": "tidelift"
} }
], ],
"time": "2021-12-05T20:33:52+00:00" "time": "2021-12-25T19:45:36+00:00"
}, },
{ {
"name": "symfony/translation-contracts", "name": "symfony/translation-contracts",
@ -2305,16 +2305,16 @@
}, },
{ {
"name": "symfony/yaml", "name": "symfony/yaml",
"version": "v5.4.0", "version": "v5.4.2",
"source": { "source": {
"type": "git", "type": "git",
"url": "https://github.com/symfony/yaml.git", "url": "https://github.com/symfony/yaml.git",
"reference": "034ccc0994f1ae3f7499fa5b1f2e75d5e7a94efc" "reference": "b9eb163846a61bb32dfc147f7859e274fab38b58"
}, },
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"reference": "034ccc0994f1ae3f7499fa5b1f2e75d5e7a94efc", "reference": "b9eb163846a61bb32dfc147f7859e274fab38b58",
"shasum": "" "shasum": ""
}, },
"require": { "require": {
@ -2360,7 +2360,7 @@
"description": "Loads and dumps YAML files", "description": "Loads and dumps YAML files",
"homepage": "https://symfony.com", "homepage": "https://symfony.com",
"support": { "support": {
"source": "https://github.com/symfony/yaml/tree/v5.4.0" "source": "https://github.com/symfony/yaml/tree/v5.4.2"
}, },
"funding": [ "funding": [
{ {
@ -2376,7 +2376,7 @@
"type": "tidelift" "type": "tidelift"
} }
], ],
"time": "2021-11-28T15:25:38+00:00" "time": "2021-12-16T21:58:21+00:00"
}, },
{ {
"name": "tracy/tracy", "name": "tracy/tracy",
@ -4510,7 +4510,8 @@
"prefer-stable": false, "prefer-stable": false,
"prefer-lowest": false, "prefer-lowest": false,
"platform": { "platform": {
"php": "^7.3" "ext-yaml": "*",
"php": "^7.4"
}, },
"platform-dev": [], "platform-dev": [],
"plugin-api-version": "2.2.0" "plugin-api-version": "2.2.0"

42
src/Classes/Singleton.php Normal file
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@ -0,0 +1,42 @@
<?php
declare(strict_types = 1);
namespace Chandler\Classes;
use Chandler\Interfaces\Singleton as SingletonInterface;
/**
* @package Chandler\Classes
*/
abstract class Singleton implements SingletonInterface
{
/**
* @var array
*/
private static array $instances = [];
/**
* TODO: Add a description.
*
* @return void
*/
final private function __clone() {}
/**
* TODO: Add a description.
*/
abstract protected function __construct();
/**
* @return static
*/
public static function getInstance(): self
{
if (array_key_exists(static::class, self::$instances)) {
return self::$instances[static::class];
} else {
return self::$instances[static::class] = new static();
}
}
}

16
src/Interfaces/Singleton.php Normal file
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@ -0,0 +1,16 @@
<?php
declare(strict_types = 1);
namespace Chandler\Interfaces;
/**
* @package Chandler\Interfaces
*/
interface Singleton
{
/**
* @return static
*/
public static function getInstance(): self;
}