Target.php

<?php

/*
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */
namespace Doctrine\Common\Annotations\Annotation;


/**
 * Annotation that can be used to signal to the parser
 * to check the annotation target during the parsing process.
 *
 * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
 *
 * @Annotation
 */
final class Target {
  const TARGET_CLASS = 1;
  const TARGET_METHOD = 2;
  const TARGET_PROPERTY = 4;
  const TARGET_ANNOTATION = 8;
  const TARGET_ALL = 15;

  /**
   * @var array
   */
  private static $map = array(
    'ALL' => self::TARGET_ALL,
    'CLASS' => self::TARGET_CLASS,
    'METHOD' => self::TARGET_METHOD,
    'PROPERTY' => self::TARGET_PROPERTY,
    'ANNOTATION' => self::TARGET_ANNOTATION,
  );

  /**
   * @var array
   */
  public $value;

  /**
   * Targets as bitmask.
   *
   * @var integer
   */
  public $targets;

  /**
   * Literal target declaration.
   *
   * @var integer
   */
  public $literal;

  /**
   * Annotation construct
   *
   * @param array $values
   *
   * @throws \InvalidArgumentException
   */
  public function __construct(array $values) {
    if (!isset($values['value'])) {
      $values['value'] = null;
    }
    if (is_string($values['value'])) {
      $values['value'] = array(
        $values['value'],
      );
    }
    if (!is_array($values['value'])) {
      throw new \InvalidArgumentException(sprintf('@Target expects either a string value, or an array of strings, "%s" given.', is_object($values['value']) ? get_class($values['value']) : gettype($values['value'])));
    }
    $bitmask = 0;
    foreach ($values['value'] as $literal) {
      if (!isset(self::$map[$literal])) {
        throw new \InvalidArgumentException(sprintf('Invalid Target "%s". Available targets: [%s]', $literal, implode(', ', array_keys(self::$map))));
      }
      $bitmask += self::$map[$literal];
    }
    $this->targets = $bitmask;
    $this->value = $values['value'];
    $this->literal = implode(', ', $this->value);
  }

}