Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of Psy Shell.
Chris@0:  *
Chris@0:  * (c) 2012-2017 Justin Hileman
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Psy\TabCompletion\Matcher;
Chris@0: 
Chris@0: /**
Chris@0:  * A class attribute tab completion Matcher.
Chris@0:  *
Chris@0:  * Given a namespace and class, this matcher provides completion for constants
Chris@0:  * and static properties.
Chris@0:  *
Chris@0:  * @author Marc Garcia <markcial@gmail.com>
Chris@0:  */
Chris@0: class ClassAttributesMatcher extends AbstractMatcher
Chris@0: {
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function getMatches(array $tokens, array $info = array())
Chris@0:     {
Chris@0:         $input = $this->getInput($tokens);
Chris@0: 
Chris@0:         $firstToken = array_pop($tokens);
Chris@0:         if (self::tokenIs($firstToken, self::T_STRING)) {
Chris@0:             // second token is the nekudotayim operator
Chris@0:             array_pop($tokens);
Chris@0:         }
Chris@0: 
Chris@0:         $class = $this->getNamespaceAndClass($tokens);
Chris@0: 
Chris@0:         try {
Chris@0:             $reflection = new \ReflectionClass($class);
Chris@0:         } catch (\ReflectionException $re) {
Chris@0:             return array();
Chris@0:         }
Chris@0: 
Chris@0:         $vars = array_merge(
Chris@0:             array_map(
Chris@0:                 function ($var) {
Chris@0:                     return '$' . $var;
Chris@0:                 },
Chris@0:                 array_keys($reflection->getStaticProperties())
Chris@0:             ),
Chris@0:             array_keys($reflection->getConstants())
Chris@0:         );
Chris@0: 
Chris@0:         return array_map(
Chris@0:             function ($name) use ($class) {
Chris@0:                 return $class . '::' . $name;
Chris@0:             },
Chris@0:             array_filter(
Chris@0:                 $vars,
Chris@0:                 function ($var) use ($input) {
Chris@0:                     return AbstractMatcher::startsWith($input, $var);
Chris@0:                 }
Chris@0:             )
Chris@0:         );
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function hasMatched(array $tokens)
Chris@0:     {
Chris@12:         $token     = array_pop($tokens);
Chris@0:         $prevToken = array_pop($tokens);
Chris@0: 
Chris@0:         switch (true) {
Chris@0:             case self::tokenIs($prevToken, self::T_DOUBLE_COLON) && self::tokenIs($token, self::T_STRING):
Chris@0:             case self::tokenIs($token, self::T_DOUBLE_COLON):
Chris@0:                 return true;
Chris@0:         }
Chris@0: 
Chris@0:         return false;
Chris@0:     }
Chris@0: }