Chris@13: <?php
Chris@13: 
Chris@13: /*
Chris@13:  * This file is part of Psy Shell.
Chris@13:  *
Chris@13:  * (c) 2012-2018 Justin Hileman
Chris@13:  *
Chris@13:  * For the full copyright and license information, please view the LICENSE
Chris@13:  * file that was distributed with this source code.
Chris@13:  */
Chris@13: 
Chris@13: namespace Psy\TabCompletion\Matcher;
Chris@13: 
Chris@13: /**
Chris@13:  * A class attribute tab completion Matcher.
Chris@13:  *
Chris@13:  * Given a namespace and class, this matcher provides completion for constants
Chris@13:  * and static properties.
Chris@13:  *
Chris@13:  * @author Marc Garcia <markcial@gmail.com>
Chris@13:  */
Chris@13: class ClassAttributesMatcher extends AbstractMatcher
Chris@13: {
Chris@13:     /**
Chris@13:      * {@inheritdoc}
Chris@13:      */
Chris@13:     public function getMatches(array $tokens, array $info = [])
Chris@13:     {
Chris@13:         $input = $this->getInput($tokens);
Chris@13: 
Chris@17:         $firstToken = \array_pop($tokens);
Chris@13:         if (self::tokenIs($firstToken, self::T_STRING)) {
Chris@13:             // second token is the nekudotayim operator
Chris@17:             \array_pop($tokens);
Chris@13:         }
Chris@13: 
Chris@13:         $class = $this->getNamespaceAndClass($tokens);
Chris@13: 
Chris@13:         try {
Chris@13:             $reflection = new \ReflectionClass($class);
Chris@13:         } catch (\ReflectionException $re) {
Chris@13:             return [];
Chris@13:         }
Chris@13: 
Chris@17:         $vars = \array_merge(
Chris@17:             \array_map(
Chris@13:                 function ($var) {
Chris@13:                     return '$' . $var;
Chris@13:                 },
Chris@17:                 \array_keys($reflection->getStaticProperties())
Chris@13:             ),
Chris@17:             \array_keys($reflection->getConstants())
Chris@13:         );
Chris@13: 
Chris@17:         return \array_map(
Chris@13:             function ($name) use ($class) {
Chris@17:                 $chunks = \explode('\\', $class);
Chris@17:                 $className = \array_pop($chunks);
Chris@16: 
Chris@16:                 return $className . '::' . $name;
Chris@13:             },
Chris@17:             \array_filter(
Chris@13:                 $vars,
Chris@13:                 function ($var) use ($input) {
Chris@13:                     return AbstractMatcher::startsWith($input, $var);
Chris@13:                 }
Chris@13:             )
Chris@13:         );
Chris@13:     }
Chris@13: 
Chris@13:     /**
Chris@13:      * {@inheritdoc}
Chris@13:      */
Chris@13:     public function hasMatched(array $tokens)
Chris@13:     {
Chris@17:         $token     = \array_pop($tokens);
Chris@17:         $prevToken = \array_pop($tokens);
Chris@13: 
Chris@13:         switch (true) {
Chris@13:             case self::tokenIs($prevToken, self::T_DOUBLE_COLON) && self::tokenIs($token, self::T_STRING):
Chris@13:             case self::tokenIs($token, self::T_DOUBLE_COLON):
Chris@13:                 return true;
Chris@13:         }
Chris@13: 
Chris@13:         return false;
Chris@13:     }
Chris@13: }