phpmyadmin working

21 files changed, 1519 insertions, 0 deletions

diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/.coveralls.yml b/srcs/phpmyadmin/vendor/dasprid/enum/.coveralls.yml
new file mode 100644
index 0000000..bc71b62
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/.coveralls.yml
@@ -0,0 +1,2 @@
+coverage_clover: clover.xml
+json_path: coveralls-upload.json
diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/.travis.yml b/srcs/phpmyadmin/vendor/dasprid/enum/.travis.yml
new file mode 100644
index 0000000..e4c6453
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/.travis.yml
@@ -0,0 +1,41 @@
+sudo: false
+
+language: php
+
+cache:
+  directories:
+    - $HOME/.composer/cache
+    - $HOME/.local
+    - vendor
+
+matrix:
+  fast_finish: true
+  include:
+    - php: 7.1
+      env:
+        - EXECUTE_CS_CHECK=true
+        - EXECUTE_TEST_COVERALLS=true
+        - PATH="$HOME/.local/bin:$PATH"
+    - php: nightly
+  allow_failures:
+    - php: nightly
+
+before_install:
+  - if [[ $EXECUTE_TEST_COVERALLS != 'true' ]]; then phpenv config-rm xdebug.ini || return 0 ; fi
+  - composer self-update
+  - if [[ $EXECUTE_TEST_COVERALLS == 'true' ]]; then composer require --dev --no-update satooshi/php-coveralls:dev-master ; fi
+
+install:
+  - travis_retry composer install --no-interaction
+  - composer info -i
+
+script:
+  - if [[ $EXECUTE_TEST_COVERALLS == 'true' ]]; then vendor/bin/phpunit --coverage-clover clover.xml ; fi
+  - if [[ $EXECUTE_TEST_COVERALLS != 'true' ]]; then vendor/bin/phpunit ; fi
+  - if [[ $EXECUTE_CS_CHECK == 'true' ]]; then vendor/bin/phpcs ; fi
+
+after_script:
+  - if [[ $EXECUTE_TEST_COVERALLS == 'true' ]]; then vendor/bin/coveralls ; fi
+
+notifications:
+  email: true
diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/README.md b/srcs/phpmyadmin/vendor/dasprid/enum/README.md
new file mode 100644
index 0000000..9e9ca12
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/README.md
@@ -0,0 +1,164 @@
+# PHP 7.1 enums
+
+[![Build Status](https://travis-ci.org/DASPRiD/Enum.svg?branch=master)](https://travis-ci.org/DASPRiD/Enum)
+[![Coverage Status](https://coveralls.io/repos/github/DASPRiD/Enum/badge.svg?branch=master)](https://coveralls.io/github/DASPRiD/Enum?branch=master)
+[![Latest Stable Version](https://poser.pugx.org/dasprid/enum/v/stable)](https://packagist.org/packages/dasprid/enum)
+[![Total Downloads](https://poser.pugx.org/dasprid/enum/downloads)](https://packagist.org/packages/dasprid/enum)
+[![License](https://poser.pugx.org/dasprid/enum/license)](https://packagist.org/packages/dasprid/enum)
+
+It is a well known fact that PHP is missing a basic enum type, ignoring the rather incomplete `SplEnum` implementation
+which is only available as a PECL extension. There are also quite a few other userland enum implementations around,
+but all of them have one or another compromise. This library tries to close that gap as far as PHP allows it to.
+
+## Usage
+
+### Basics
+
+At its core, there is the `DASPRiD\Enum\AbstractEnum` class, which by default will work with constants like any other
+enum implementation you might know. The first clear difference is that you should define all the constants as protected
+(so nobody outside your class can read them but the `AbstractEnum` can still do so). The other even mightier difference
+is that, for simple enums, the value of the constant doesn't matter at all. Let's have a look at a simple example:
+
+```php
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * @method static self MONDAY()
+ * @method static self TUESDAY()
+ * @method static self WEDNESDAY()
+ * @method static self THURSDAY()
+ * @method static self FRIDAY()
+ * @method static self SATURDAY()
+ * @method static self SUNDAY()
+ */
+final class WeekDay extends AbstractEnum
+{
+    protected const MONDAY = null;
+    protected const TUESDAY = null;
+    protected const WEDNESDAY = null;
+    protected const THURSDAY = null;
+    protected const FRIDAY = null;
+    protected const SATURDAY = null;
+    protected const SUNDAY = null;
+}
+``` 
+
+If you need to provide constants for either internal use or public use, you can mark them as either private or public,
+in which case they will be ignored by the enum, which only considers protected constants as valid values. As you can
+see, we specifically defined the generated magic methods in a class level doc block, so anyone using this class will
+automatically have proper auto-completion in their IDE. Now since you have defined the enum, you can simply use it like
+that:
+
+```php
+function tellItLikeItIs(WeekDay $weekDay)
+{
+    switch ($weekDay) {
+        case WeekDay::MONDAY():
+            echo 'Mondays are bad.';
+            break;
+            
+        case WeekDay::FRIDAY():
+            echo 'Fridays are better.';
+            break;
+            
+        case WeekDay::SATURDAY():
+        case WeekDay::SUNDAY():
+            echo 'Weekends are best.';
+            break;
+            
+        default:
+            echo 'Midweek days are so-so.';
+    }
+}
+
+tellItLikeItIs(WeekDay::MONDAY());
+tellItLikeItIs(WeekDay::WEDNESDAY());
+tellItLikeItIs(WeekDay::FRIDAY());
+tellItLikeItIs(WeekDay::SATURDAY());
+tellItLikeItIs(WeekDay::SUNDAY());
+```
+
+### More complex example
+
+Of course, all enums are singletons, which are not cloneable or serializable. Thus you can be sure that there is always
+just one instance of the same type. Of course, the values of constants are not completely useless, let's have a look at
+a more complex example:
+
+```php
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * @method static self MERCURY()
+ * @method static self VENUS()
+ * @method static self EARTH()
+ * @method static self MARS()
+ * @method static self JUPITER()
+ * @method static self SATURN()
+ * @method static self URANUS()
+ * @method static self NEPTUNE()
+ */
+final class Planet extends AbstractEnum
+{
+    protected const MERCURY = [3.303e+23, 2.4397e6];
+    protected const VENUS = [4.869e+24, 6.0518e6];
+    protected const EARTH = [5.976e+24, 6.37814e6];
+    protected const MARS = [6.421e+23, 3.3972e6];
+    protected const JUPITER = [1.9e+27, 7.1492e7];
+    protected const SATURN = [5.688e+26, 6.0268e7];
+    protected const URANUS = [8.686e+25, 2.5559e7];
+    protected const NEPTUNE = [1.024e+26, 2.4746e7];
+    
+    /**
+     * Universal gravitational constant.
+     *
+     * @var float
+     */
+    private const G = 6.67300E-11;
+    
+    /**
+     * Mass in kilograms.
+     *
+     * @var float
+     */
+    private $mass;
+
+    /**
+     * Radius in meters.
+     *    
+     * @var float
+     */    
+    private $radius;
+    
+    protected function __construct(float $mass, float $radius)
+    {
+        $this->mass = $mass;
+        $this->radius = $radius;
+    }
+    
+    public function mass() : float
+    {
+        return $this->mass;
+    }
+    
+    public function radius() : float
+    {
+        return $this->radius; 
+    }
+    
+    public function surfaceGravity() : float
+    {
+        return self::G * $this->mass / ($this->radius * $this->radius);
+    }
+    
+    public function surfaceWeight(float $otherMass) : float
+    {
+        return $otherMass * $this->surfaceGravity();
+    }
+}
+
+$myMass = 80;
+
+foreach (Planet::values() as $planet) {
+    printf("Your weight on %s is %f\n", $planet, $planet->surfaceWeight($myMass));
+}
+```
diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/composer.json b/srcs/phpmyadmin/vendor/dasprid/enum/composer.json
new file mode 100644
index 0000000..41184d3
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/composer.json
@@ -0,0 +1,30 @@
+{
+    "name": "dasprid/enum",
+    "description": "PHP 7.1 enum implementation",
+    "license": "BSD-2-Clause",
+    "authors": [
+        {
+            "name": "Ben Scholzen 'DASPRiD'",
+            "homepage": "https://dasprids.de/",
+            "email": "mail@dasprids.de"
+        }
+    ],
+    "keywords": [
+        "enum",
+        "map"
+    ],
+    "require-dev": {
+        "phpunit/phpunit": "^6.4",
+        "squizlabs/php_codesniffer": "^3.1"
+    },
+    "autoload": {
+        "psr-4": {
+            "DASPRiD\\Enum\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "DASPRiD\\EnumTest\\": "test/"
+        }
+    }
+}
diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/phpcs.xml b/srcs/phpmyadmin/vendor/dasprid/enum/phpcs.xml
new file mode 100644
index 0000000..a184db8
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/phpcs.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0"?>
+<ruleset name="Enum coding standard">
+    <description>Enum coding standard</description>
+
+    <!-- display progress -->
+    <arg value="p"/>
+    <arg name="colors"/>
+    <arg name="parallel" value="75"/>
+
+    <!-- inherit rules from: -->
+    <rule ref="PSR2"/>
+    <rule ref="Squiz.Strings.DoubleQuoteUsage"/>
+    <rule ref="Generic.PHP.DisallowShortOpenTag"/>
+    <rule ref="Generic.Arrays.DisallowLongArraySyntax"/>
+    <rule ref="Generic.Formatting.SpaceAfterNot"/>
+    <rule ref="Squiz.WhiteSpace.OperatorSpacing">
+        <properties>
+            <property name="ignoreNewlines" value="true"/>
+        </properties>
+    </rule>
+    <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace">
+        <properties>
+            <property name="ignoreBlankLines" value="false"/>
+        </properties>
+    </rule>
+
+    <!-- Paths to check -->
+    <file>src</file>
+    <file>test</file>
+</ruleset>
diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/phpunit.xml.dist b/srcs/phpmyadmin/vendor/dasprid/enum/phpunit.xml.dist
new file mode 100644
index 0000000..307a430
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/phpunit.xml.dist
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true">
+    <testsuites>
+        <testsuite name="DASPRiD\\Enum Tests">
+            <directory>./test</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/src/AbstractEnum.php b/srcs/phpmyadmin/vendor/dasprid/enum/src/AbstractEnum.php
new file mode 100644
index 0000000..bc36119
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/src/AbstractEnum.php
@@ -0,0 +1,241 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum;
+
+use DASPRiD\Enum\Exception\CloneNotSupportedException;
+use DASPRiD\Enum\Exception\IllegalArgumentException;
+use DASPRiD\Enum\Exception\MismatchException;
+use DASPRiD\Enum\Exception\SerializeNotSupportedException;
+use DASPRiD\Enum\Exception\UnserializeNotSupportedException;
+use ReflectionClass;
+
+abstract class AbstractEnum
+{
+    /**
+     * @var string
+     */
+    private $name;
+
+    /**
+     * @var int
+     */
+    private $ordinal;
+
+    /**
+     * @var array<string, array<string, static>>
+     */
+    private static $values = [];
+
+    /**
+     * @var array<string, bool>
+     */
+    private static $allValuesLoaded = [];
+
+    /**
+     * @var array<string, array>
+     */
+    private static $constants = [];
+
+    /**
+     * The constructor is private by default to avoid arbitrary enum creation.
+     *
+     * When creating your own constructor for a parameterized enum, make sure to declare it as protected, so that
+     * the static methods are able to construct it. Avoid making it public, as that would allow creation of
+     * non-singleton enum instances.
+     */
+    private function __construct()
+    {
+    }
+
+    /**
+     * Magic getter which forwards all calls to {@see self::valueOf()}.
+     *
+     * @return static
+     */
+    final public static function __callStatic(string $name, array $arguments) : self
+    {
+        return static::valueOf($name);
+    }
+
+    /**
+     * Returns an enum with the specified name.
+     *
+     * The name must match exactly an identifier used to declare an enum in this type (extraneous whitespace characters
+     * are not permitted).
+     *
+     * @return static
+     * @throws IllegalArgumentException if the enum has no constant with the specified name
+     */
+    final public static function valueOf(string $name) : self
+    {
+        if (isset(self::$values[static::class][$name])) {
+            return self::$values[static::class][$name];
+        }
+
+        $constants = self::constants();
+
+        if (array_key_exists($name, $constants)) {
+            return self::createValue($name, $constants[$name][0], $constants[$name][1]);
+        }
+
+        throw new IllegalArgumentException(sprintf('No enum constant %s::%s', static::class, $name));
+    }
+
+    /**
+     * @return static
+     */
+    final private static function createValue(string $name, int $ordinal, array $arguments) : self
+    {
+        $instance = new static(...$arguments);
+        $instance->name = $name;
+        $instance->ordinal = $ordinal;
+        self::$values[static::class][$name] = $instance;
+        return $instance;
+    }
+
+    /**
+     * Obtains all possible types defined by this enum.
+     *
+     * @return static[]
+     */
+    final public static function values() : array
+    {
+        if (isset(self::$allValuesLoaded[static::class])) {
+            return self::$values[static::class];
+        }
+
+        if (! isset(self::$values[static::class])) {
+            self::$values[static::class] = [];
+        }
+
+        foreach (self::constants() as $name => $constant) {
+            if (array_key_exists($name, self::$values[static::class])) {
+                continue;
+            }
+
+            static::createValue($name, $constant[0], $constant[1]);
+        }
+
+        uasort(self::$values[static::class], function (self $a, self $b) {
+            return $a->ordinal() <=> $b->ordinal();
+        });
+
+        self::$allValuesLoaded[static::class] = true;
+        return self::$values[static::class];
+    }
+
+    final private static function constants() : array
+    {
+        if (isset(self::$constants[static::class])) {
+            return self::$constants[static::class];
+        }
+
+        self::$constants[static::class] = [];
+        $reflectionClass = new ReflectionClass(static::class);
+        $ordinal = -1;
+
+        foreach ($reflectionClass->getReflectionConstants() as $reflectionConstant) {
+            if (! $reflectionConstant->isProtected()) {
+                continue;
+            }
+
+            $value = $reflectionConstant->getValue();
+
+            self::$constants[static::class][$reflectionConstant->name] = [
+                ++$ordinal,
+                is_array($value) ? $value : []
+            ];
+        }
+
+        return self::$constants[static::class];
+    }
+
+    /**
+     * Returns the name of this enum constant, exactly as declared in its enum declaration.
+     *
+     * Most programmers should use the {@see self::__toString()} method in preference to this one, as the toString
+     * method may return a more user-friendly name. This method is designed primarily for use in specialized situations
+     * where correctness depends on getting the exact name, which will not vary from release to release.
+     */
+    final public function name() : string
+    {
+        return $this->name;
+    }
+
+    /**
+     * Returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial
+     * constant is assigned an ordinal of zero).
+     *
+     * Most programmers will have no use for this method. It is designed for use by sophisticated enum-based data
+     * structures.
+     */
+    final public function ordinal() : int
+    {
+        return $this->ordinal;
+    }
+
+    /**
+     * Compares this enum with the specified object for order.
+     *
+     * Returns negative integer, zero or positive integer as this object is less than, equal to or greater than the
+     * specified object.
+     *
+     * Enums are only comparable to other enums of the same type. The natural order implemented by this method is the
+     * order in which the constants are declared.
+     *
+     * @throws MismatchException if the passed enum is not of the same type
+     */
+    final public function compareTo(self $other) : int
+    {
+        if (! $other instanceof static) {
+            throw new MismatchException(sprintf(
+                'The passed enum %s is not of the same type as %s',
+                get_class($other),
+                static::class
+            ));
+        }
+
+        return $this->ordinal - $other->ordinal;
+    }
+
+    /**
+     * Forbid cloning enums.
+     *
+     * @throws CloneNotSupportedException
+     */
+    final public function __clone()
+    {
+        throw new CloneNotSupportedException();
+    }
+
+    /**
+     * Forbid serializing enums.
+     *
+     * @throws SerializeNotSupportedException
+     */
+    final public function __sleep() : void
+    {
+        throw new SerializeNotSupportedException();
+    }
+
+    /**
+     * Forbid unserializing enums.
+     *
+     * @throws UnserializeNotSupportedException
+     */
+    final public function __wakeup() : void
+    {
+        throw new UnserializeNotSupportedException();
+    }
+
+    /**
+     * Turns the enum into a string representation.
+     *
+     * You may override this method to give a more user-friendly version.
+     */
+    public function __toString() : string
+    {
+        return $this->name;
+    }
+}
diff --git a/srcs/phpmyadmin/vendor/dasprid/enum/src/EnumMap.php b/srcs/phpmyadmin/vendor/dasprid/enum/src/EnumMap.php
new file mode 100644
index 0000000..77c5f35
--- /dev/null
+++ b/srcs/phpmyadmin/vendor/dasprid/enum/src/EnumMap.php
@@ -0,0 +1,375 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum;
+
+use DASPRiD\Enum\Exception\ExpectationException;
+use DASPRiD\Enum\Exception\IllegalArgumentException;
+use IteratorAggregate;
+use Serializable;
+use Traversable;
+
+/**
+ * A specialized map implementation for use with enum type keys.
+ *
+ * All of the keys in an enum map must come from a single enum type that is specified, when the map is created. Enum
+ * maps are represented internally as arrays. This representation is extremely compact and efficient.
+ *
+ * Enum maps are maintained in the natural order of their keys (the order in which the enum constants are declared).
+ * This is reflected in the iterators returned by the collection views {@see self::getIterator()} and
+ * {@see self::values()}.
+ *
+ * Iterators returned by the collection views are not consistent: They may or may not show the effects of modifications
+ * to the map that occur while the iteration is in progress.
+ */
+final class EnumMap implements Serializable, IteratorAggregate
+{
+    /**
+     * The class name of the key.
+     *
+     * @var string
+     */
+    private $keyType;
+
+    /**
+     * The type of the value.
+     *
+     * @var string
+     */
+    private $valueType;
+
+    /**
+     * @var bool
+     */
+    private $allowNullValues;
+
+    /**
+     * All of the constants comprising the enum, cached for performance.
+     *
+     * @var array<int, AbstractEnum>
+     */
+    private $keyUniverse;
+
+    /**
+     * Array representation of this map. The ith element is the value to which universe[i] is currently mapped, or null
+     * if it isn't mapped to anything, or NullValue if it's mapped to null.
+     *
+     * @var array<int, mixed>
+     */
+    private $values;
+
+    /**
+     * @var int
+     */
+    private $size = 0;
+
+    /**
+     * Creates a new enum map.
+     *
+     * @param string $keyType the type of the keys, must extend AbstractEnum
+     * @param string $valueType the type of the values
+     * @param bool $allowNullValues whether to allow null values
+     * @throws IllegalArgumentException when key type does not extend AbstractEnum
+     */
+    public function __construct(string $keyType, string $valueType, bool $allowNullValues)
+    {
+        if (! is_subclass_of($keyType, AbstractEnum::class)) {
+            throw new IllegalArgumentException(sprintf(
+                'Class %s does not extend %s',
+                $keyType,
+                AbstractEnum::class
+            ));
+        }
+
+        $this->keyType = $keyType;
+        $this->valueType = $valueType;
+        $this->allowNullValues = $allowNullValues;
+        $this->keyUniverse = $keyType::values();
+        $this->values = array_fill(0, count($this->keyUniverse), null);
+    }
+
+    /**
+     * Checks whether the map types match the supplied ones.
+     *
+     * You should call this method when an EnumMap is passed to you and you want to ensure that it's made up of the
+     * correct types.
+     *
+     * @throws ExpectationException when supplied key type mismatches local key type
+     * @throws ExpectationException when supplied value type mismatches local value type
+     * @throws ExpectationException when the supplied map allows null values, abut should not
+     */
+    public function expect(string $keyType, string $valueType, bool $allowNullValues) : void
+    {
+        if ($keyType !== $this->keyType) {
+            throw new ExpectationException(sprintf(
+                'Callee expected an EnumMap with key type %s, but got %s',
+                $keyType,
+                $this->keyType
+            ));
+        }
+
+        if ($valueType !== $this->valueType) {
+            throw new ExpectationException(sprintf(
+                'Callee expected an EnumMap with value type %s, but got %s',
+                $keyType,
+                $this->keyType
+            ));
+        }
+
+        if ($allowNullValues !== $this->allowNullValues) {
+            throw new ExpectationException(sprintf(
+                'Callee expected an EnumMap with nullable flag %s, but got %s',
+                ($allowNullValues ? 'true' : 'false'),
+                ($this->allowNullValues ? 'true' : 'false')
+            ));
+        }
+    }
+
+    /**
+     * Returns the number of key-value mappings in this map.
+     */
+    public function size() : int
+    {
+        return $this->size;
+    }
+
+    /**
+     * Returns true if this map maps one or more keys to the specified value.
+     */
+    public function containsValue($value) : bool
+    {
+        return in_array($this->maskNull($value), $this->values, true);
+    }
+
+    /**
+     * Returns true if this map contains a mapping for the specified key.
+     */
+    public function containsKey(AbstractEnum $key) : bool
+    {
+        $this->checkKeyType($key);
+        return null !== $this->values[$key->ordinal()];
+    }
+
+    /**
+     * Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.
+     *
+     * More formally, if this map contains a mapping from a key to a value, then this method returns the value;
+     * otherwise it returns null (there can be at most one such mapping).
+     *
+     * A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also
+     * possible that hte map explicitly maps the key to null. The {@see self::containsKey()} operation may be used to
+     * distinguish these two cases.
+     *
+     * @return mixed
+     */
+    public function get(AbstractEnum $key)
+    {
+        $this->checkKeyType($key);
+        return $this->unmaskNull($this->values[$key->ordinal()]);
+    }
+
+    /**
+     * Associates the specified value with the specified key in this map.
+     *
+     * If the map previously contained a mapping for this key, the old value is replaced.
+     *
+     * @return mixed the previous value associated with the specified key, or null if there was no mapping for the key.
+     *               (a null return can also indicate that the map previously associated null with the specified key.)
+     * @throws IllegalArgumentException when the passed values does not match the internal value type
+     */
+    public function put(AbstractEnum $key, $value)
+    {
+        $this->checkKeyType($key);
+
+        if (! $this->isValidValue($value)) {
+            throw new IllegalArgumentException(sprintf('Value is not of type %s', $this->valueType));
+        }
+
+        $index = $key->ordinal();
+        $oldValue = $this->values[$index];
+        $this->values[$index] = $this->maskNull($value);
+
+        if (null === $oldValue) {
+            ++$this->size;
+        }
+
+        return $this->unmaskNull($oldValue);
+    }
+
+    /**
+     * Removes the mapping for this key frm this map if present.
+     *
+     * @return mixed the previous value associated with the specified key, or null if there was no mapping for the key.
+     *               (a null return can also indicate that the map previously associated null with the specified key.)
+     */
+    public function remove(AbstractEnum $key)
+    {
+        $this->checkKeyType($key);
+
+        $index = $key->ordinal();
+        $oldValue = $this->values[$index];
+        $this->values[$index] = null;
+
+        if (null !== $oldValue) {
+            --$this->size;
+        }
+
+        return $this->unmaskNull($oldValue);
+    }
+
+    /**
+     * Removes all mappings from this map.
+     */
+    public function clear() : void
+    {
+        $this->values = array_fill(0, count($this->keyUniverse), null);
+        $this->size = 0;
+    }
+
+    /**
+     * Compares the specified map with this map for quality.
+     *
+     * Returns true if the two maps represent the same mappings.
+     */
+    public function equals(self $other) : bool
+    {
+        if ($this === $other) {
+            return true;
+        }
+
+        if ($this->size !== $other->size) {
+            return false;
+        }
+
+        return $this->values === $other->values;
+    }
+
+    /**
+     * Returns the values contained in this map.
+     *
+     * The array will contain the values in the order their corresponding keys appear in the map, which is their natural
+     * order (the order in which the num constants are declared).
+     */
+    public function values() : array
+    {
+        return array_values(array_map(function ($value) {
+            return $this->unmaskNull($value);
+        }, array_filter($this->values, function ($value) : bool {
+            return null !== $value;
+        })));
+    }
+
+    public function serialize() : string
+    {
+        $values = [];
+
+        foreach ($this->values as $ordinal => $value) {
+            if (null === $value) {
+                continue;
+            }
+
+            $values[$ordinal] = $this->unmaskNull($value);
+        }
+
+        return serialize([
+            'keyType' => $this->keyType,
+            'valueType' => $this->valueType,
+            'allowNullValues' => $this->allowNullValues,
+            'values' => $values,
+        ]);
+    }
+
+    public function unserialize($serialized) : void
+    {
+        $data = unserialize($serialized);
+        $this->__construct($data['keyType'], $data['valueType'], $data['allowNullValues']);
+
+        foreach ($this->keyUniverse as $key) {
+            if (array_key_exists($key->ordinal(), $data['values'])) {
+                $this->put($key, $data['values'][$key->ordinal()]);
+            }
+        }
+    }
+
+    public function getIterator() : Traversable
+    {
+        foreach ($this->keyUniverse as $key) {
+            if (null === $this->values[$key->ordinal()]) {
+                continue;
+            }
+
+            yield $key => $this->unmaskNull($this->values[$key->ordinal()]);
+        }
+    }
+
+    private function maskNull($value)
+    {
+