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: abstract class AbstractDefaultParametersMatcher extends AbstractContextAwareMatcher
Chris@0: {
Chris@0:     /**
Chris@0:      * @param \ReflectionParameter[] $reflectionParameters
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function getDefaultParameterCompletion(array $reflectionParameters)
Chris@0:     {
Chris@0:         $parametersProcessed = array();
Chris@0: 
Chris@0:         foreach ($reflectionParameters as $parameter) {
Chris@0:             if (!$parameter->isDefaultValueAvailable()) {
Chris@0:                 return array();
Chris@0:             }
Chris@0: 
Chris@0:             $defaultValue = $this->valueToShortString($parameter->getDefaultValue());
Chris@0: 
Chris@0:             $parametersProcessed[] = "\${$parameter->getName()} = $defaultValue";
Chris@0:         }
Chris@0: 
Chris@0:         if (empty($parametersProcessed)) {
Chris@0:             return array();
Chris@0:         }
Chris@0: 
Chris@0:         return array(implode(', ', $parametersProcessed) . ')');
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Takes in the default value of a parameter and turns it into a
Chris@0:      *  string representation that fits inline.
Chris@0:      * This is not 100% true to the original (newlines are inlined, for example).
Chris@0:      *
Chris@0:      * @param mixed $value
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     private function valueToShortString($value)
Chris@0:     {
Chris@0:         if (!is_array($value)) {
Chris@0:             return json_encode($value);
Chris@0:         }
Chris@0: 
Chris@0:         $chunks = array();
Chris@0:         $chunksSequential = array();
Chris@0: 
Chris@0:         $allSequential = true;
Chris@0: 
Chris@0:         foreach ($value as $key => $item) {
Chris@0:             $allSequential = $allSequential && is_numeric($key) && $key === count($chunksSequential);
Chris@0: 
Chris@0:             $keyString = $this->valueToShortString($key);
Chris@0:             $itemString = $this->valueToShortString($item);
Chris@0: 
Chris@0:             $chunks[] = "{$keyString} => {$itemString}";
Chris@0:             $chunksSequential[] = $itemString;
Chris@0:         }
Chris@0: 
Chris@0:         $chunksToImplode = $allSequential ? $chunksSequential : $chunks;
Chris@0: 
Chris@0:         return '[' . implode(', ', $chunksToImplode) . ']';
Chris@0:     }
Chris@0: }