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<?php |
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namespace mpyw\Co\Internal; |
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use mpyw\Co\CoInterface; |
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use mpyw\Co\Internal\GeneratorContainer; |
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class Utils { |
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/** |
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* Recursively normalize value. |
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* Closure -> Returned value |
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* Generator -> GeneratorContainer |
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* Array -> Array (children's are normalized) |
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* Traversable -> Array (children's are normalized) |
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* Others -> Others |
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* @param mixed $value |
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* @param CoOption $options |
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* @param mixed $yield_key |
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* @return mixed |
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*/ |
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public static function normalize($value, CoOption $options, $yield_key = null) |
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{ |
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while ($value instanceof \Closure) { |
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try { |
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$value = $value(); |
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} catch (\RuntimeException $value) { |
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if ($yield_key === CoInterface::UNSAFE || |
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$yield_key !== CoInterface::SAFE && $options['throw']) { |
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throw $value; |
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} |
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} |
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} |
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if ($value instanceof \Generator) { |
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return new GeneratorContainer($value, $options, $yield_key); |
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} |
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if (self::isArrayLike($value)) { |
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$tmp = []; |
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foreach ($value as $k => $v) { |
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$tmp[$k] = self::normalize($v, $options, $yield_key); |
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} |
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return $tmp; |
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} |
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return $value; |
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} |
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/** |
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* Recursively search yieldable values. |
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* Each entries are assoc those contain keys 'value' and 'keylist'. |
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* value -> the value itself. |
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* keylist -> position of the value. nests are represented as array values. |
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* @param mixed $value Must be already normalized. |
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* @param array $keylist Internally used. |
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* @return array |
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*/ |
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public static function getYieldables($value, array $keylist = []) |
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{ |
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$r = []; |
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if (!is_array($value)) { |
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if (self::isCurl($value) || self::isGeneratorContainer($value)) { |
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$r[(string)$value] = [ |
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'value' => $value, |
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'keylist' => $keylist, |
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]; |
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} |
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return $r; |
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} |
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foreach ($value as $k => $v) { |
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$newlist = array_merge($keylist, [$k]); |
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$r = array_merge($r, self::getYieldables($v, $newlist)); |
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} |
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return $r; |
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} |
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/** |
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* Check if value is a valid cURL handle. |
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* @param mixed $value |
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* @return bool |
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*/ |
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public static function isCurl($value) |
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{ |
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return is_resource($value) && get_resource_type($value) === 'curl'; |
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} |
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/** |
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* Check if value is a valid Generator. |
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* @param mixed $value |
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* @return bool |
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*/ |
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public static function isGeneratorContainer($value) |
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{ |
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return $value instanceof GeneratorContainer; |
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} |
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/** |
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* Check if value is a valid array or Traversable, not a Generator. |
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* @param mixed $value |
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* @return bool |
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*/ |
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public static function isArrayLike($value) |
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{ |
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return |
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$value instanceof \Traversable |
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&& !$value instanceof \Generator |
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|| is_array($value); |
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} |
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} |
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mpyw /
co
