diff core/lib/Drupal/Core/Extension/Dependency.php @ 5:12f9dff5fda9 tip

Update to Drupal core 8.7.1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/Extension/Dependency.php	Thu May 09 15:34:47 2019 +0100
@@ -0,0 +1,203 @@
+<?php
+
+namespace Drupal\Core\Extension;
+
+use Drupal\Component\Version\Constraint;
+
+/**
+ * A value object representing dependency information.
+ *
+ * This class implements \ArrayAccess to provide a backwards compatibility layer
+ * for Drupal 8.x. This will be removed before Drupal 9.x.
+ *
+ * @see https://www.drupal.org/node/2756875
+ */
+class Dependency implements \ArrayAccess {
+
+  /**
+   * The name of the dependency.
+   *
+   * @var string
+   */
+  protected $name;
+
+  /**
+   * The project namespace for the dependency.
+   *
+   * @var string
+   */
+  protected $project;
+
+  /**
+   * The constraint string.
+   *
+   * @var \Drupal\Component\Version\Constraint
+   */
+  protected $constraintString;
+
+  /**
+   * The Constraint object from the constraint string.
+   *
+   * @var \Drupal\Component\Version\Constraint
+   */
+  protected $constraint;
+
+  /**
+   * Dependency constructor.
+   *
+   * @param string $name
+   *   The name of the dependency.
+   * @param string $project
+   *   The project namespace for the dependency.
+   * @param string $constraint
+   *   The constraint string. For example, '>8.x-1.1'.
+   */
+  public function __construct($name, $project, $constraint) {
+    $this->name = $name;
+    $this->project = $project;
+    $this->constraintString = $constraint;
+  }
+
+  /**
+   * Gets the dependency's name.
+   *
+   * @return string
+   *   The dependency's name.
+   */
+  public function getName() {
+    return $this->name;
+  }
+
+  /**
+   * Gets the dependency's project namespace.
+   *
+   * @return string
+   *   The dependency's project namespace.
+   */
+  public function getProject() {
+    return $this->project;
+  }
+
+  /**
+   * Gets constraint string from the dependency.
+   *
+   * @return string
+   *   The constraint string.
+   */
+  public function getConstraintString() {
+    return $this->constraintString;
+  }
+
+  /**
+   * Gets the Constraint object.
+   *
+   * @return \Drupal\Component\Version\Constraint
+   *   The Constraint object.
+   */
+  protected function getConstraint() {
+    if (!$this->constraint) {
+      $this->constraint = new Constraint($this->constraintString, \Drupal::CORE_COMPATIBILITY);
+    }
+    return $this->constraint;
+  }
+
+  /**
+   * Determines if the provided version is compatible with this dependency.
+   *
+   * @param string $version
+   *   The version to check, for example '4.2'.
+   *
+   * @return bool
+   *   TRUE if compatible with the provided version, FALSE if not.
+   */
+  public function isCompatible($version) {
+    return $this->getConstraint()->isCompatible($version);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function offsetExists($offset) {
+    @trigger_error(sprintf('Array access to %s properties is deprecated. Use accessor methods instead. See https://www.drupal.org/node/2756875', __CLASS__), E_USER_DEPRECATED);
+    return in_array($offset, ['name', 'project', 'original_version', 'versions'], TRUE);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function offsetGet($offset) {
+    switch ($offset) {
+      case 'name':
+        @trigger_error(sprintf('Array access to the %s name property is deprecated. Use %s::getName() instead. See https://www.drupal.org/node/2756875', __CLASS__, __CLASS__), E_USER_DEPRECATED);
+        return $this->getName();
+
+      case 'project':
+        @trigger_error(sprintf('Array access to the %s project property is deprecated. Use %s::getProject() instead. See https://www.drupal.org/node/2756875', __CLASS__, __CLASS__), E_USER_DEPRECATED);
+        return $this->getProject();
+
+      case 'original_version':
+        @trigger_error(sprintf('Array access to the %s original_version property is deprecated. Use %s::getConstraintString() instead. See https://www.drupal.org/node/2756875', __CLASS__, __CLASS__), E_USER_DEPRECATED);
+        $constraint = $this->getConstraintString();
+        if ($constraint) {
+          $constraint = ' (' . $constraint . ')';
+        }
+        return $constraint;
+
+      case 'versions':
+        @trigger_error(sprintf('Array access to the %s versions property is deprecated. See https://www.drupal.org/node/2756875', __CLASS__), E_USER_DEPRECATED);
+        return $this->getConstraint()->toArray();
+    }
+    throw new \InvalidArgumentException("The $offset key is not supported");
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function offsetSet($offset, $value) {
+    throw new \BadMethodCallException(sprintf('%s() is not supported', __METHOD__));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function offsetUnset($offset) {
+    throw new \BadMethodCallException(sprintf('%s() is not supported', __METHOD__));
+  }
+
+  /**
+   * Creates a new instance of this class from a dependency string.
+   *
+   * @param string $dependency
+   *   A dependency string, which specifies a module or theme dependency, and
+   *   optionally the project it comes from and a constraint string that
+   *   determines the versions that are supported. Supported formats include:
+   *   - 'module'
+   *   - 'project:module'
+   *   - 'project:module (>=version, <=version)'.
+   *
+   * @return static
+   */
+  public static function createFromString($dependency) {
+    if (strpos($dependency, ':') !== FALSE) {
+      list($project, $dependency) = explode(':', $dependency);
+    }
+    else {
+      $project = '';
+    }
+    $parts = explode('(', $dependency, 2);
+    $name = trim($parts[0]);
+    $version_string = isset($parts[1]) ? rtrim($parts[1], ") ") : '';
+    return new static($name, $project, $version_string);
+  }
+
+  /**
+   * Prevents unnecessary serialization of constraint objects.
+   *
+   * @return array
+   *   The properties to seriailize.
+   */
+  public function __sleep() {
+    return ['name', 'project', 'constraintString'];
+  }
+
+}