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<?php |
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/* |
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* This file is part of the puli/discovery package. |
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* |
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* (c) Bernhard Schussek <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Puli\Discovery\Api\Type; |
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use RuntimeException; |
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use Webmozart\Assert\Assert; |
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/** |
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* A parameter that can be set during binding. |
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* |
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* @since 1.0 |
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* |
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* @author Bernhard Schussek <[email protected]> |
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*/ |
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final class BindingParameter |
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{ |
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/** |
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* Flag: The parameter is optional. |
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*/ |
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const OPTIONAL = 0; |
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/** |
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* Flag: The parameter is required. |
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*/ |
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const REQUIRED = 1; |
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/** |
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* @var string |
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*/ |
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private $name; |
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/** |
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* @var int |
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*/ |
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private $flags; |
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/** |
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* @var mixed |
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*/ |
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private $defaultValue; |
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/** |
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* Creates a new parameter. |
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* |
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* @param string $name The parameter name. |
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* @param int $flags A bitwise combination of the flag constants |
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* in this class. |
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* @param mixed $defaultValue The parameter's default value. |
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*/ |
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public function __construct($name, $flags = self::OPTIONAL, $defaultValue = null) |
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{ |
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Assert::stringNotEmpty($name, 'The parameter name must be a non-empty string. Got: %s'); |
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Assert::startsWithLetter($name, 'The parameter name must start with a letter. Got: %s'); |
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Assert::nullOrInteger($flags, 'The parameter "$flags" must be an integer or null. Got: %s'); |
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if (($flags & self::REQUIRED) && null !== $defaultValue) { |
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throw new RuntimeException('Required parameters must not have default values.'); |
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} |
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$this->name = $name; |
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$this->flags = $flags; |
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$this->defaultValue = $defaultValue; |
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} |
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/** |
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* Returns the name of the parameter. |
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* |
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* @return string The parameter name. |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* Returns the flags passed to the constructor. |
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* |
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* @return int A bitwise combination of the flag constants in this class. |
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*/ |
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public function getFlags() |
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{ |
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return $this->flags; |
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} |
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/** |
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* Returns the default value of the parameter. |
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* |
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* @return mixed The default value. |
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*/ |
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public function getDefaultValue() |
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{ |
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return $this->defaultValue; |
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} |
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/** |
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* Returns whether the parameter is required. |
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* |
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* @return bool Returns `true` if the parameter is required and `false` |
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* otherwise. |
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*/ |
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public function isRequired() |
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{ |
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return (bool) ($this->flags & self::REQUIRED); |
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} |
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} |
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