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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 InvalidArgumentException; |
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use Puli\Discovery\Api\Binding\Binding; |
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use Webmozart\Assert\Assert; |
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/** |
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* A type that a binding can be bound to. |
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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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class BindingType |
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{ |
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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 string |
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*/ |
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private $acceptedBindingClass; |
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/** |
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* @var BindingParameter[] |
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*/ |
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private $parameters = array(); |
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/** |
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* Creates a new type. |
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* |
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* @param string $name The name of the type. |
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* @param string $bindingClass The class name of the accepted |
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* bindings. |
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* @param BindingParameter[] $parameters The parameters that can be set |
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* for a binding. |
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*/ |
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public function __construct($name, $bindingClass, array $parameters = array()) |
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{ |
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Assert::stringNotEmpty($name, 'The type name must be a non-empty string. Got: %s'); |
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Assert::allIsInstanceOf($parameters, 'Puli\Discovery\Api\Type\BindingParameter'); |
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if (!class_exists($bindingClass) && !interface_exists($bindingClass)) { |
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throw new InvalidArgumentException(sprintf( |
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'The binding class "%s" is neither a class nor an '. |
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'interface name. Is there a typo?', |
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$bindingClass |
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)); |
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} |
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$this->name = $name; |
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$this->acceptedBindingClass = $bindingClass; |
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foreach ($parameters as $parameter) { |
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$this->parameters[$parameter->getName()] = $parameter; |
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} |
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// Sort to facilitate comparison |
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ksort($this->parameters); |
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} |
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/** |
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* Returns the type's name. |
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* |
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* @return string The name of the type. |
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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 parameters. |
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* |
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* @return BindingParameter[] The type parameters. |
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*/ |
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public function getParameters() |
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{ |
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return $this->parameters; |
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} |
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/** |
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* Returns whether the type has parameters. |
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* |
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* @return bool Returns `true` if the type has parameters and `false` |
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* otherwise. |
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*/ |
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public function hasParameters() |
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{ |
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return count($this->parameters) > 0; |
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} |
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/** |
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* Returns whether the type has any required parameters. |
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* |
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* @return bool Returns `true` if the type has at least one required |
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* parameter. |
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*/ |
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public function hasRequiredParameters() |
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{ |
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foreach ($this->parameters as $parameter) { |
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if ($parameter->isRequired()) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns whether the type has any optional parameters. |
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* |
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* @return bool Returns `true` if the type has at least one optional |
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* parameter. |
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*/ |
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public function hasOptionalParameters() |
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{ |
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foreach ($this->parameters as $parameter) { |
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if (!$parameter->isRequired()) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns a parameter by name. |
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* |
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* @param string $name The parameter name. |
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* |
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* @return BindingParameter The parameter. |
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* |
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* @throws NoSuchParameterException If the parameter was not found. |
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*/ |
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public function getParameter($name) |
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{ |
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if (!isset($this->parameters[$name])) { |
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throw new NoSuchParameterException(sprintf( |
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'The parameter "%s" does not exist on type "%s".', |
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$name, |
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$this->name |
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)); |
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} |
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return $this->parameters[$name]; |
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} |
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/** |
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* Returns whether a parameter exists. |
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* |
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* @param string $name The parameter name. |
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* |
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* @return bool Returns `true` if a parameter with that name exists. |
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*/ |
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public function hasParameter($name) |
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{ |
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return isset($this->parameters[$name]); |
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} |
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/** |
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* Returns the default values of the parameters. |
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* |
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* @return array The default values of the parameters. |
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*/ |
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public function getParameterValues() |
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{ |
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$values = array(); |
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foreach ($this->parameters as $name => $parameter) { |
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if (!$parameter->isRequired()) { |
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$values[$name] = $parameter->getDefaultValue(); |
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} |
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} |
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return $values; |
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} |
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/** |
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* Returns whether the type has parameters with default values. |
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* |
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* @return bool Returns `true` if at least one parameter has a default value |
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* and `false` otherwise. |
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*/ |
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public function hasParameterValues() |
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{ |
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foreach ($this->parameters as $name => $parameter) { |
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if (!$parameter->isRequired()) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns the default value of a parameter. |
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* |
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* @param string $name The parameter name. |
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* |
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* @return mixed The default value. |
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* |
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* @throws NoSuchParameterException If the parameter was not found. |
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*/ |
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public function getParameterValue($name) |
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{ |
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return $this->getParameter($name)->getDefaultValue(); |
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} |
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/** |
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* Returns whether a parameter has a default value set. |
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* |
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* @param string $name The parameter name. |
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* |
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* @return bool Returns `true` if the parameter has a default value set and |
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* `false` otherwise. |
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* |
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* @throws NoSuchParameterException If the parameter was not found. |
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*/ |
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public function hasParameterValue($name) |
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{ |
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return !$this->getParameter($name)->isRequired(); |
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} |
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/** |
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* Returns whether the type accepts a binding class. |
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* |
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* @param Binding|string $binding The binding or the fully-qualified name of |
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* the binding class. |
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* |
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* @return bool Returns `true` if the binding can be bound to this type and |
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* `false` otherwise. |
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*/ |
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public function acceptsBinding($binding) |
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{ |
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return $binding instanceof $this->acceptedBindingClass |
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|| $binding === $this->acceptedBindingClass |
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|| is_subclass_of($binding, $this->acceptedBindingClass); |
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} |
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/** |
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* Returns the binding class names that can be bound to this type. |
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* |
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* Returns an empty array if any binding can be bound to the type. |
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* |
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* @return string[] An array of class names or an empty array. |
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*/ |
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public function getAcceptedBindingClass() |
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{ |
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return $this->acceptedBindingClass; |
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} |
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} |
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This check compares the return type specified in the
@return
annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch.