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<?php |
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/** |
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* Copyright (c) 2014-present, Facebook, Inc. All rights reserved. |
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* |
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* You are hereby granted a non-exclusive, worldwide, royalty-free license to |
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* use, copy, modify, and distribute this software in source code or binary |
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* form for use in connection with the web services and APIs provided by |
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* Facebook. |
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* |
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* As with any software that integrates with the Facebook platform, your use |
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* of this software is subject to the Facebook Developer Principles and |
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* Policies [http://developers.facebook.com/policy/]. This copyright notice |
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* shall be included in all copies or substantial portions of the software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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* |
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*/ |
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namespace FacebookAds\Enum; |
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abstract class AbstractEnum implements EnumInstanceInterface { |
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/** |
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* @var array|null |
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*/ |
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protected $map = null; |
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/** |
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* @var array|null |
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*/ |
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protected $names = null; |
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/** |
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* @var array|null |
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*/ |
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protected $values = null; |
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/** |
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* @var array|null |
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*/ |
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protected $valuesMap = null; |
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/** |
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* @var AbstractEnum[] |
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*/ |
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protected static $instances = array(); |
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/** |
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* @return string |
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*/ |
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static function className() { |
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return get_called_class(); |
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} |
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/** |
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* @return AbstractEnum |
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*/ |
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public static function getInstance() { |
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$fqn = get_called_class(); |
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if (!array_key_exists($fqn, static::$instances)) { |
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static::$instances[$fqn] = new static(); |
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} |
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return static::$instances[$fqn]; |
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} |
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/** |
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* @return array |
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*/ |
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public function getArrayCopy() { |
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if ($this->map === null) { |
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$this->map = (new \ReflectionClass(get_called_class())) |
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->getConstants(); |
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} |
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return $this->map; |
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} |
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/** |
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* @return array |
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*/ |
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public function getNames() { |
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if ($this->names === null) { |
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$this->names = array_keys($this->getArrayCopy()); |
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} |
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return $this->names; |
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} |
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/** |
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* @return array |
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*/ |
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public function getValues() { |
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if ($this->values === null) { |
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$this->values = array_values($this->getArrayCopy()); |
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} |
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return $this->values; |
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} |
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/** |
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* @return array |
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*/ |
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public function getValuesMap() { |
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if ($this->valuesMap === null) { |
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$this->valuesMap = array_fill_keys($this->getValues(), null); |
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} |
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return $this->valuesMap; |
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} |
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/** |
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* @param string|int|float $name |
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* @return mixed |
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*/ |
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public function getValueForName($name) { |
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$copy = $this->getArrayCopy(); |
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return array_key_exists($name, $copy) |
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? $copy[$name] |
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: null; |
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} |
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/** |
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* @param string|int|float $name |
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* @return mixed |
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* @throws \InvalidArgumentException |
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*/ |
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public function assureValueForName($name) { |
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$value = $this->getValueForName($name); |
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if ($value === null) { |
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throw new \InvalidArgumentException( |
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'Unknown name "'.$name.'" in '.static::className()); |
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} |
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return $value; |
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} |
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/** |
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* @param string|int|float $name |
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* @return bool |
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*/ |
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public function isValid($name) { |
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return array_key_exists($name, $this->getArrayCopy()); |
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} |
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/** |
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* @param string|int|float $name |
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* @throws \InvalidArgumentException |
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*/ |
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public function assureIsValid($name) { |
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if (!array_key_exists($name, $this->getArrayCopy())) { |
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throw new \InvalidArgumentException( |
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'Unknown name "'.$name.'" in '.static::className()); |
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} |
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} |
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/** |
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* @param string|int|float $value |
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* @return bool |
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*/ |
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public function isValidValue($value) { |
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return array_key_exists($value, $this->getValuesMap()); |
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} |
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/** |
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* @param mixed $value |
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* @throws \InvalidArgumentException |
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*/ |
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public function assureIsValidValue($value) { |
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if (!$this->isValidValue($value)) { |
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throw new \InvalidArgumentException( |
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'"'.$value.'", not a valid value in '.static::className()); |
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} |
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} |
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} |
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Adding explicit visibility (
private
,protected
, orpublic
) is generally recommend to communicate to other developers how, and from where this method is intended to be used.