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<?php |
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declare(strict_types=1); |
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namespace MabeEnum; |
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use Countable; |
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use InvalidArgumentException; |
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use Iterator; |
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use IteratorAggregate; |
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use OutOfBoundsException; |
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/** |
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* A set of enumerators of the given enumeration (EnumSet<T>) |
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* based on an integer or binary bitset depending of given enumeration size. |
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* |
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* @copyright 2019 Marc Bennewitz |
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* @license http://github.com/marc-mabe/php-enum/blob/master/LICENSE.txt New BSD License |
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* @link http://github.com/marc-mabe/php-enum for the canonical source repository |
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*/ |
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class EnumSet implements IteratorAggregate, Countable |
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{ |
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/** |
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* The classname of the Enumeration |
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* @var string |
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*/ |
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private $enumeration; |
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/** |
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* Number of enumerators defined in the enumeration |
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* @var int |
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*/ |
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private $enumerationCount; |
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/** |
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* Integer or binary (little endian) bitset |
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* @var int|string |
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*/ |
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private $bitset = 0; |
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/**#@+ |
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* Defines private method names to be called depended of how the bitset type was set too. |
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* ... Integer or binary bitset. |
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* ... *Int or *Bin method |
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* |
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* @var string |
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*/ |
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private $fnDoGetIterator = 'doGetIteratorInt'; |
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private $fnDoCount = 'doCountInt'; |
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private $fnDoGetOrdinals = 'doGetOrdinalsInt'; |
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private $fnDoGetBit = 'doGetBitInt'; |
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private $fnDoSetBit = 'doSetBitInt'; |
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private $fnDoUnsetBit = 'doUnsetBitInt'; |
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private $fnDoGetBinaryBitsetLe = 'doGetBinaryBitsetLeInt'; |
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private $fnDoSetBinaryBitsetLe = 'doSetBinaryBitsetLeInt'; |
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/**#@-*/ |
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/** |
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* Constructor |
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* |
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* @param string $enumeration The classname of the enumeration |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct(string $enumeration) |
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{ |
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if (!\is_subclass_of($enumeration, Enum::class)) { |
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throw new InvalidArgumentException(\sprintf( |
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'%s can handle subclasses of %s only', |
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__METHOD__, |
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Enum::class |
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)); |
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} |
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$this->enumeration = $enumeration; |
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$this->enumerationCount = \count($enumeration::getConstants()); |
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// By default the bitset is initialized as integer bitset |
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// in case the enumeraton has more enumerators then integer bits |
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// we will switch this into a binary bitset |
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if ($this->enumerationCount > \PHP_INT_SIZE * 8) { |
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// init binary bitset with zeros |
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$this->bitset = \str_repeat("\0", (int)\ceil($this->enumerationCount / 8)); |
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// switch internal binary bitset functions |
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$this->fnDoGetIterator = 'doGetIteratorBin'; |
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$this->fnDoCount = 'doCountBin'; |
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$this->fnDoGetOrdinals = 'doGetOrdinalsBin'; |
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$this->fnDoGetBit = 'doGetBitBin'; |
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$this->fnDoSetBit = 'doSetBitBin'; |
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$this->fnDoUnsetBit = 'doUnsetBitBin'; |
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$this->fnDoGetBinaryBitsetLe = 'doGetBinaryBitsetLeBin'; |
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$this->fnDoSetBinaryBitsetLe = 'doSetBinaryBitsetLeBin'; |
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} |
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} |
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/** |
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* Get the classname of the enumeration |
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* @return string |
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*/ |
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public function getEnumeration(): string |
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{ |
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return $this->enumeration; |
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} |
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/** |
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* Attach a new enumerator or overwrite an existing one |
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* @param Enum|null|bool|int|float|string|array $enumerator |
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* @return void |
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* @throws InvalidArgumentException On an invalid given enumerator |
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*/ |
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public function attach($enumerator): void |
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{ |
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$this->{$this->fnDoSetBit}(($this->enumeration)::get($enumerator)->getOrdinal()); |
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} |
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/** |
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* Detach the given enumerator |
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* @param Enum|null|bool|int|float|string|array $enumerator |
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* @return void |
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* @throws InvalidArgumentException On an invalid given enumerator |
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*/ |
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public function detach($enumerator): void |
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{ |
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$this->{$this->fnDoUnsetBit}(($this->enumeration)::get($enumerator)->getOrdinal()); |
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} |
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/** |
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* Test if the given enumerator was attached |
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* @param Enum|null|bool|int|float|string|array $enumerator |
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* @return bool |
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*/ |
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public function contains($enumerator): bool |
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{ |
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return $this->{$this->fnDoGetBit}(($this->enumeration)::get($enumerator)->getOrdinal()); |
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} |
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/* IteratorAggregate */ |
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/** |
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* Get a new iterator |
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* @return Iterator |
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* @uses doGetIteratorInt() |
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* @uses doGetIteratorBin() |
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*/ |
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public function getIterator(): Iterator |
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{ |
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return $this->{$this->fnDoGetIterator}(); |
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/* |
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$ordinal = 0; |
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$enumerationCount = $this->enumerationCount; |
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$fnDoGetBit = $this->fnDoGetBit; |
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for (; $ordinal < $enumerationCount; ++$ordinal) { |
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if ($this->{$fnDoGetBit}($ordinal)) { |
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yield $ordinal => ($this->enumeration)::byOrdinal($ordinal); |
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} |
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} |
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*/ |
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} |
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/** |
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* Get a new Iterator. |
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* |
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* This is the binary bitset implementation. |
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* |
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* @return Iterator |
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* @see getIterator() |
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* @see goGetIteratorInt() |
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*/ |
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private function doGetIteratorBin(): Iterator |
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{ |
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$bitset = $this->bitset; |
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$byteLen = \strlen($bitset); |
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for ($bytePos = 0; $bytePos < $byteLen; ++$bytePos) { |
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if ($bitset[$bytePos] === "\0") { |
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// fast skip null byte |
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continue; |
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} |
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$ord = \ord($bitset[$bytePos]); |
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for ($bitPos = 0; $bitPos < 8; ++$bitPos) { |
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if ($ord & (1 << $bitPos)) { |
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$ordinal = $bytePos * 8 + $bitPos; |
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yield $ordinal => ($this->enumeration)::byOrdinal($ordinal); |
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} |
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} |
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} |
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} |
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/** |
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* Get a new Iterator. |
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* |
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* This is the integer bitset implementation. |
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* |
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* @return Iterator |
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* @see getIterator() |
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* @see doGetIteratorBin() |
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*/ |
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private function doGetIteratorInt(): Iterator |
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{ |
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$count = $this->enumerationCount; |
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$bitset = $this->bitset; |
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for ($ordinal = 0; $ordinal < $count; ++$ordinal) { |
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if ($bitset & (1 << $ordinal)) { |
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yield $ordinal => ($this->enumeration)::byOrdinal($ordinal); |
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} |
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} |
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} |
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/* Countable */ |
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/** |
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* Count the number of elements |
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* |
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* @return int |
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* @uses doCountBin() |
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* @uses doCountInt() |
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*/ |
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public function count(): int |
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{ |
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return $this->{$this->fnDoCount}(); |
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} |
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/** |
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* Count the number of elements. |
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* |
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* This is the binary bitset implementation. |
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* |
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* @return int |
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* @see count() |
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* @see doCountInt() |
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*/ |
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private function doCountBin(): int |
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{ |
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$count = 0; |
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$bitset = $this->bitset; |
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$byteLen = \strlen($bitset); |
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for ($bytePos = 0; $bytePos < $byteLen; ++$bytePos) { |
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if ($bitset[$bytePos] === "\0") { |
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// fast skip null byte |
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continue; |
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} |
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$ord = \ord($bitset[$bytePos]); |
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if ($ord & 0b00000001) ++$count; |
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if ($ord & 0b00000010) ++$count; |
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if ($ord & 0b00000100) ++$count; |
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if ($ord & 0b00001000) ++$count; |
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if ($ord & 0b00010000) ++$count; |
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if ($ord & 0b00100000) ++$count; |
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if ($ord & 0b01000000) ++$count; |
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if ($ord & 0b10000000) ++$count; |
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} |
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return $count; |
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} |
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/** |
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* Count the number of elements. |
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* |
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* This is the integer bitset implementation. |
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* |
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* @return int |
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* @see count() |
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* @see doCountBin() |
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*/ |
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private function doCountInt(): int |
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{ |
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$count = 0; |
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$bitset = $this->bitset; |
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// PHP does not support right shift unsigned |
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if ($bitset < 0) { |
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$count = 1; |
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$bitset = $bitset & \PHP_INT_MAX; |
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} |
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// iterate byte by byte and count set bits |
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$phpIntBitSize = \PHP_INT_SIZE * 8; |
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for ($bitPos = 0; $bitPos < $phpIntBitSize; $bitPos += 8) { |
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$bitChk = 0xff << $bitPos; |
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$byte = $bitset & $bitChk; |
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if ($byte) { |
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$byte = $byte >> $bitPos; |
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if ($byte & 0b00000001) ++$count; |
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if ($byte & 0b00000010) ++$count; |
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if ($byte & 0b00000100) ++$count; |
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if ($byte & 0b00001000) ++$count; |
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if ($byte & 0b00010000) ++$count; |
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if ($byte & 0b00100000) ++$count; |
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if ($byte & 0b01000000) ++$count; |
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if ($byte & 0b10000000) ++$count; |
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} |
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if ($bitset <= $bitChk) { |
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break; |
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} |
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} |
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return $count; |
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} |
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/** |
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* Check if this EnumSet is the same as other |
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* @param EnumSet $other |
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* @return bool |
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*/ |
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public function isEqual(EnumSet $other): bool |
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{ |
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return $this->enumeration === $other->enumeration |
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&& $this->bitset === $other->bitset; |
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} |
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/** |
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* Check if this EnumSet is a subset of other |
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* @param EnumSet $other |
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* @return bool |
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*/ |
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4 |
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public function isSubset(EnumSet $other): bool |
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{ |
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return $this->enumeration === $other->enumeration |
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&& ($this->bitset & $other->bitset) === $this->bitset; |
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} |
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/** |
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* Check if this EnumSet is a superset of other |
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* @param EnumSet $other |
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* @return bool |
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*/ |
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4 |
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public function isSuperset(EnumSet $other): bool |
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{ |
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return $this->enumeration === $other->enumeration |
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&& ($this->bitset | $other->bitset) === $this->bitset; |
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} |
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/** |
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* Produce a new set with enumerators from both this and other (this | other) |
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* |
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* @param EnumSet $other EnumSet of the same enumeration to produce the union |
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* @return EnumSet |
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* @throws InvalidArgumentException If $other doesn't match the enumeration |
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*/ |
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2 |
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public function union(EnumSet $other): EnumSet |
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{ |
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2 |
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if ($this->enumeration !== $other->enumeration) { |
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1 |
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throw new InvalidArgumentException(\sprintf( |
346
|
1 |
|
'Other should be of the same enumeration as this %s', |
347
|
1 |
|
$this->enumeration |
348
|
|
|
)); |
349
|
|
|
} |
350
|
|
|
|
351
|
1 |
|
$clone = clone $this; |
352
|
1 |
|
$clone->bitset = $this->bitset | $other->bitset; |
353
|
1 |
|
return $clone; |
354
|
|
|
} |
355
|
|
|
|
356
|
|
|
/** |
357
|
|
|
* Produce a new set with enumerators common to both this and other (this & other) |
358
|
|
|
* |
359
|
|
|
* @param EnumSet $other EnumSet of the same enumeration to produce the intersect |
|
|
|
|
360
|
|
|
* @return EnumSet |
361
|
|
|
* @throws InvalidArgumentException If $other doesn't match the enumeration |
|
|
|
|
362
|
|
|
*/ |
363
|
2 |
|
public function intersect(EnumSet $other): EnumSet |
364
|
|
|
{ |
365
|
2 |
|
if ($this->enumeration !== $other->enumeration) { |
366
|
1 |
|
throw new InvalidArgumentException(\sprintf( |
367
|
1 |
|
'Other should be of the same enumeration as this %s', |
368
|
1 |
|
$this->enumeration |
369
|
|
|
)); |
370
|
|
|
} |
371
|
|
|
|
372
|
1 |
|
$clone = clone $this; |
373
|
1 |
|
$clone->bitset = $this->bitset & $other->bitset; |
374
|
1 |
|
return $clone; |
375
|
|
|
} |
376
|
|
|
|
377
|
|
|
/** |
378
|
|
|
* Produce a new set with enumerators in this but not in other (this - other) |
379
|
|
|
* |
380
|
|
|
* @param EnumSet $other EnumSet of the same enumeration to produce the diff |
|
|
|
|
381
|
|
|
* @return EnumSet |
382
|
|
|
* @throws InvalidArgumentException If $other doesn't match the enumeration |
|
|
|
|
383
|
|
|
*/ |
384
|
2 |
|
public function diff(EnumSet $other): EnumSet |
385
|
|
|
{ |
386
|
2 |
|
if ($this->enumeration !== $other->enumeration) { |
387
|
1 |
|
throw new InvalidArgumentException(\sprintf( |
388
|
1 |
|
'Other should be of the same enumeration as this %s', |
389
|
1 |
|
$this->enumeration |
390
|
|
|
)); |
391
|
|
|
} |
392
|
|
|
|
393
|
1 |
|
$clone = clone $this; |
394
|
1 |
|
$clone->bitset = $this->bitset & ~$other->bitset; |
395
|
1 |
|
return $clone; |
396
|
|
|
} |
397
|
|
|
|
398
|
|
|
/** |
399
|
|
|
* Produce a new set with enumerators in either this and other but not in both (this ^ other) |
400
|
|
|
* |
401
|
|
|
* @param EnumSet $other EnumSet of the same enumeration to produce the symmetric difference |
|
|
|
|
402
|
|
|
* @return EnumSet |
403
|
|
|
* @throws InvalidArgumentException If $other doesn't match the enumeration |
|
|
|
|
404
|
|
|
*/ |
405
|
2 |
|
public function symDiff(EnumSet $other): EnumSet |
406
|
|
|
{ |
407
|
2 |
|
if ($this->enumeration !== $other->enumeration) { |
408
|
1 |
|
throw new InvalidArgumentException(\sprintf( |
409
|
1 |
|
'Other should be of the same enumeration as this %s', |
410
|
1 |
|
$this->enumeration |
411
|
|
|
)); |
412
|
|
|
} |
413
|
|
|
|
414
|
1 |
|
$clone = clone $this; |
415
|
1 |
|
$clone->bitset = $this->bitset ^ $other->bitset; |
416
|
1 |
|
return $clone; |
417
|
|
|
} |
418
|
|
|
|
419
|
|
|
/** |
420
|
|
|
* Get ordinal numbers of the defined enumerators as array |
421
|
|
|
* @return int[] |
422
|
|
|
* @uses doGetOrdinalsBin() |
423
|
|
|
* @uses doGetOrdinalsInt() |
424
|
|
|
*/ |
425
|
9 |
|
public function getOrdinals(): array |
426
|
|
|
{ |
427
|
9 |
|
return $this->{$this->fnDoGetOrdinals}(); |
428
|
|
|
} |
429
|
|
|
|
430
|
|
|
/** |
431
|
|
|
* Get ordinal numbers of the defined enumerators as array. |
432
|
|
|
* |
433
|
|
|
* This is the binary bitset implementation. |
434
|
|
|
* |
435
|
|
|
* @return int[] |
436
|
|
|
* @see getOrdinals() |
437
|
|
|
* @see goGetOrdinalsInt() |
438
|
|
|
*/ |
439
|
1 |
|
private function doGetOrdinalsBin(): array |
440
|
|
|
{ |
441
|
1 |
|
$ordinals = []; |
442
|
1 |
|
$bitset = $this->bitset; |
443
|
1 |
|
$byteLen = \strlen($bitset); |
444
|
1 |
|
for ($bytePos = 0; $bytePos < $byteLen; ++$bytePos) { |
445
|
1 |
|
if ($bitset[$bytePos] === "\0") { |
446
|
|
|
// fast skip null byte |
447
|
1 |
|
continue; |
448
|
|
|
} |
449
|
|
|
|
450
|
1 |
|
$ord = \ord($bitset[$bytePos]); |
451
|
1 |
|
for ($bitPos = 0; $bitPos < 8; ++$bitPos) { |
452
|
1 |
|
if ($ord & (1 << $bitPos)) { |
453
|
1 |
|
$ordinals[] = $bytePos * 8 + $bitPos; |
454
|
|
|
} |
455
|
|
|
} |
456
|
|
|
} |
457
|
1 |
|
return $ordinals; |
458
|
|
|
} |
459
|
|
|
|
460
|
|
|
/** |
461
|
|
|
* Get ordinal numbers of the defined enumerators as array. |
462
|
|
|
* |
463
|
|
|
* This is the integer bitset implementation. |
464
|
|
|
* |
465
|
|
|
* @return int[] |
466
|
|
|
* @see getOrdinals() |
467
|
|
|
* @see doGetOrdinalsBin() |
468
|
|
|
*/ |
469
|
8 |
|
private function doGetOrdinalsInt(): array |
470
|
|
|
{ |
471
|
8 |
|
$ordinals = []; |
472
|
8 |
|
$count = $this->enumerationCount; |
473
|
8 |
|
$bitset = $this->bitset; |
474
|
8 |
|
for ($ordinal = 0; $ordinal < $count; ++$ordinal) { |
475
|
8 |
|
if ($bitset & (1 << $ordinal)) { |
476
|
8 |
|
$ordinals[] = $ordinal; |
477
|
|
|
} |
478
|
|
|
} |
479
|
8 |
|
return $ordinals; |
480
|
|
|
} |
481
|
|
|
|
482
|
|
|
/** |
483
|
|
|
* Get values of the defined enumerators as array |
484
|
|
|
* @return mixed[] |
485
|
|
|
*/ |
486
|
5 |
|
public function getValues(): array |
487
|
|
|
{ |
488
|
5 |
|
$enumeration = $this->enumeration; |
489
|
5 |
|
$values = []; |
490
|
5 |
|
foreach ($this->getOrdinals() as $ord) { |
491
|
5 |
|
$values[] = $enumeration::byOrdinal($ord)->getValue(); |
492
|
|
|
} |
493
|
5 |
|
return $values; |
494
|
|
|
} |
495
|
|
|
|
496
|
|
|
/** |
497
|
|
|
* Get names of the defined enumerators as array |
498
|
|
|
* @return string[] |
499
|
|
|
*/ |
500
|
1 |
|
public function getNames(): array |
501
|
|
|
{ |
502
|
1 |
|
$enumeration = $this->enumeration; |
503
|
1 |
|
$names = []; |
504
|
1 |
|
foreach ($this->getOrdinals() as $ord) { |
505
|
1 |
|
$names[] = $enumeration::byOrdinal($ord)->getName(); |
506
|
|
|
} |
507
|
1 |
|
return $names; |
508
|
|
|
} |
509
|
|
|
|
510
|
|
|
/** |
511
|
|
|
* Get the defined enumerators as array |
512
|
|
|
* @return Enum[] |
513
|
|
|
*/ |
514
|
1 |
|
public function getEnumerators(): array |
515
|
|
|
{ |
516
|
1 |
|
$enumeration = $this->enumeration; |
517
|
1 |
|
$enumerators = []; |
518
|
1 |
|
foreach ($this->getOrdinals() as $ord) { |
519
|
1 |
|
$enumerators[] = $enumeration::byOrdinal($ord); |
520
|
|
|
} |
521
|
1 |
|
return $enumerators; |
522
|
|
|
} |
523
|
|
|
|
524
|
|
|
/** |
525
|
|
|
* Get binary bitset in little-endian order |
526
|
|
|
* |
527
|
|
|
* @return string |
528
|
|
|
* @uses doGetBinaryBitsetLeBin() |
529
|
|
|
* @uses doGetBinaryBitsetLeInt() |
530
|
|
|
*/ |
531
|
6 |
|
public function getBinaryBitsetLe(): string |
532
|
|
|
{ |
533
|
6 |
|
return $this->{$this->fnDoGetBinaryBitsetLe}(); |
534
|
|
|
} |
535
|
|
|
|
536
|
|
|
/** |
537
|
|
|
* Get binary bitset in little-endian order. |
538
|
|
|
* |
539
|
|
|
* This is the binary bitset implementation. |
540
|
|
|
* |
541
|
|
|
* @return string |
542
|
|
|
* @see getBinaryBitsetLe() |
543
|
|
|
* @see doGetBinaryBitsetLeInt() |
544
|
|
|
*/ |
545
|
4 |
|
private function doGetBinaryBitsetLeBin(): string |
546
|
|
|
{ |
547
|
4 |
|
return $this->bitset; |
548
|
|
|
} |
549
|
|
|
|
550
|
|
|
/** |
551
|
|
|
* Get binary bitset in little-endian order. |
552
|
|
|
* |
553
|
|
|
* This is the integer bitset implementation. |
554
|
|
|
* |
555
|
|
|
* @return string |
556
|
|
|
* @see getBinaryBitsetLe() |
557
|
|
|
* @see doGetBinaryBitsetLeBin() |
558
|
|
|
*/ |
559
|
2 |
|
private function doGetBinaryBitsetLeInt(): string |
560
|
|
|
{ |
561
|
2 |
|
$bin = \pack(\PHP_INT_SIZE === 8 ? 'P' : 'V', $this->bitset); |
562
|
2 |
|
return \substr($bin, 0, (int)\ceil($this->enumerationCount / 8)); |
563
|
|
|
} |
564
|
|
|
|
565
|
|
|
/** |
566
|
|
|
* Set binary bitset in little-endian order |
567
|
|
|
* |
568
|
|
|
* NOTE: It resets the current position of the iterator |
569
|
|
|
* |
570
|
|
|
* @param string $bitset |
|
|
|
|
571
|
|
|
* @return void |
572
|
|
|
* @throws InvalidArgumentException On out-of-range bits given as input bitset |
|
|
|
|
573
|
|
|
* @uses doSetBinaryBitsetLeBin() |
574
|
|
|
* @uses doSetBinaryBitsetLeInt() |
575
|
|
|
*/ |
576
|
12 |
|
public function setBinaryBitsetLe(string $bitset): void |
577
|
|
|
{ |
578
|
12 |
|
$this->{$this->fnDoSetBinaryBitsetLe}($bitset); |
579
|
6 |
|
} |
580
|
|
|
|
581
|
|
|
/** |
582
|
|
|
* Set binary bitset in little-endian order |
583
|
|
|
* |
584
|
|
|
* NOTE: It resets the current position of the iterator |
585
|
|
|
* |
586
|
|
|
* @param string $bitset |
|
|
|
|
587
|
|
|
* @return void |
588
|
|
|
* @throws InvalidArgumentException On out-of-range bits given as input bitset |
|
|
|
|
589
|
|
|
* @see setBinaryBitsetLeBin() |
590
|
|
|
* @see doSetBinaryBitsetLeInt() |
591
|
|
|
*/ |
592
|
7 |
|
private function doSetBinaryBitsetLeBin(string $bitset): void |
593
|
|
|
{ |
594
|
7 |
|
$size = \strlen($this->bitset); |
595
|
7 |
|
$sizeIn = \strlen($bitset); |
596
|
|
|
|
597
|
7 |
|
if ($sizeIn < $size) { |
598
|
|
|
// add "\0" if the given bitset is not long enough |
599
|
1 |
|
$bitset .= \str_repeat("\0", $size - $sizeIn); |
600
|
6 |
|
} elseif ($sizeIn > $size) { |
601
|
2 |
|
if (\ltrim(\substr($bitset, $size), "\0") !== '') { |
602
|
1 |
|
throw new InvalidArgumentException('out-of-range bits detected'); |
603
|
|
|
} |
604
|
1 |
|
$bitset = \substr($bitset, 0, $size); |
605
|
|
|
} |
606
|
|
|
|
607
|
|
|
// truncate out-of-range bits of last byte |
608
|
6 |
|
$lastByteMaxOrd = $this->enumerationCount % 8; |
609
|
6 |
|
if ($lastByteMaxOrd !== 0) { |
610
|
6 |
|
$lastByte = $bitset[-1]; |
611
|
6 |
|
$lastByteExpected = \chr((1 << $lastByteMaxOrd) - 1) & $lastByte; |
612
|
6 |
|
if ($lastByte !== $lastByteExpected) { |
613
|
2 |
|
throw new InvalidArgumentException('out-of-range bits detected'); |
614
|
|
|
} |
615
|
|
|
|
616
|
4 |
|
$this->bitset = \substr($bitset, 0, -1) . $lastByteExpected; |
617
|
|
|
} |
618
|
|
|
|
619
|
4 |
|
$this->bitset = $bitset; |
620
|
4 |
|
} |
621
|
|
|
|
622
|
|
|
/** |
623
|
|
|
* Set binary bitset in little-endian order |
624
|
|
|
* |
625
|
|
|
* NOTE: It resets the current position of the iterator |
626
|
|
|
* |
627
|
|
|
* @param string $bitset |
|
|
|
|
628
|
|
|
* @return void |
629
|
|
|
* @throws InvalidArgumentException On out-of-range bits given as input bitset |
|
|
|
|
630
|
|
|
* @see setBinaryBitsetLeBin() |
631
|
|
|
* @see doSetBinaryBitsetLeBin() |
632
|
|
|
*/ |
633
|
5 |
|
private function doSetBinaryBitsetLeInt(string $bitset): void |
634
|
|
|
{ |
635
|
5 |
|
$len = \strlen($bitset); |
636
|
5 |
|
$int = 0; |
637
|
5 |
|
for ($i = 0; $i < $len; ++$i) { |
638
|
5 |
|
$ord = \ord($bitset[$i]); |
639
|
|
|
|
640
|
5 |
|
if ($ord && $i > \PHP_INT_SIZE - 1) { |
641
|
1 |
|
throw new InvalidArgumentException('out-of-range bits detected'); |
642
|
|
|
} |
643
|
|
|
|
644
|
5 |
|
$int |= $ord << (8 * $i); |
645
|
|
|
} |
646
|
|
|
|
647
|
4 |
|
if ($int & (~0 << $this->enumerationCount)) { |
648
|
2 |
|
throw new InvalidArgumentException('out-of-range bits detected'); |
649
|
|
|
} |
650
|
|
|
|
651
|
2 |
|
$this->bitset = $int; |
652
|
2 |
|
} |
653
|
|
|
|
654
|
|
|
/** |
655
|
|
|
* Get binary bitset in big-endian order |
656
|
|
|
* |
657
|
|
|
* @return string |
658
|
|
|
*/ |
659
|
1 |
|
public function getBinaryBitsetBe(): string |
660
|
|
|
{ |
661
|
1 |
|
return \strrev($this->bitset); |
662
|
|
|
} |
663
|
|
|
|
664
|
|
|
/** |
665
|
|
|
* Set binary bitset in big-endian order |
666
|
|
|
* |
667
|
|
|
* NOTE: It resets the current position of the iterator |
668
|
|
|
* |
669
|
|
|
* @param string $bitset |
|
|
|
|
670
|
|
|
* @return void |
671
|
|
|
* @throws InvalidArgumentException On out-of-range bits given as input bitset |
|
|
|
|
672
|
|
|
*/ |
673
|
1 |
|
public function setBinaryBitsetBe(string $bitset): void |
674
|
|
|
{ |
675
|
1 |
|
$this->setBinaryBitsetLe(\strrev($bitset)); |
676
|
1 |
|
} |
677
|
|
|
|
678
|
|
|
/** |
679
|
|
|
* Get a bit at the given ordinal number |
680
|
|
|
* |
681
|
|
|
* @param int $ordinal Ordinal number of bit to get |
|
|
|
|
682
|
|
|
* @return bool |
|
|
|
|
683
|
|
|
* @throws InvalidArgumentException If the given ordinal number is out-of-range |
|
|
|
|
684
|
|
|
* @uses doGetBitBin() |
685
|
|
|
* @uses doGetBitInt() |
686
|
|
|
*/ |
687
|
3 |
|
public function getBit(int $ordinal): bool |
688
|
|
|
{ |
689
|
3 |
|
if ($ordinal < 0 || $ordinal > $this->enumerationCount) { |
690
|
1 |
|
throw new InvalidArgumentException("Ordinal number must be between 0 and {$this->enumerationCount}"); |
|
|
|
|
691
|
|
|
} |
692
|
|
|
|
693
|
2 |
|
return $this->{$this->fnDoGetBit}($ordinal); |
694
|
|
|
} |
695
|
|
|
|
696
|
|
|
/** |
697
|
|
|
* Get a bit at the given ordinal number. |
698
|
|
|
* |
699
|
|
|
* This is the binary bitset implementation. |
700
|
|
|
* |
701
|
|
|
* @param int $ordinal Ordinal number of bit to get |
|
|
|
|
702
|
|
|
* @return bool |
|
|
|
|
703
|
|
|
* @see getBit() |
704
|
|
|
* @see doGetBitInt() |
705
|
|
|
*/ |
706
|
5 |
|
private function doGetBitBin(int $ordinal): bool |
707
|
|
|
{ |
708
|
5 |
|
return (\ord($this->bitset[(int) ($ordinal / 8)]) & 1 << ($ordinal % 8)) !== 0; |
709
|
|
|
} |
710
|
|
|
|
711
|
|
|
/** |
712
|
|
|
* Get a bit at the given ordinal number. |
713
|
|
|
* |
714
|
|
|
* This is the integer bitset implementation. |
715
|
|
|
* |
716
|
|
|
* @param int $ordinal Ordinal number of bit to get |
|
|
|
|
717
|
|
|
* @return bool |
|
|
|
|
718
|
|
|
* @see getBit() |
719
|
|
|
* @see doGetBitBin() |
720
|
|
|
*/ |
721
|
7 |
|
private function doGetBitInt(int $ordinal): bool |
722
|
|
|
{ |
723
|
7 |
|
return (bool)($this->bitset & (1 << $ordinal)); |
724
|
|
|
} |
725
|
|
|
|
726
|
|
|
/** |
727
|
|
|
* Set a bit at the given ordinal number |
728
|
|
|
* |
729
|
|
|
* @param int $ordinal Ordinal number of bit to set |
|
|
|
|
730
|
|
|
* @param bool $bit The bit to set |
|
|
|
|
731
|
|
|
* @return void |
732
|
|
|
* @throws InvalidArgumentException If the given ordinal number is out-of-range |
|
|
|
|
733
|
|
|
* @uses doSetBitBin() |
734
|
|
|
* @uses doSetBitInt() |
735
|
|
|
* @uses doUnsetBitBin() |
736
|
|
|
* @uses doUnsetBitInt() |
737
|
|
|
*/ |
738
|
2 |
|
public function setBit(int $ordinal, bool $bit): void |
739
|
|
|
{ |
740
|
2 |
|
if ($ordinal < 0 || $ordinal > $this->enumerationCount) { |
741
|
1 |
|
throw new InvalidArgumentException("Ordinal number must be between 0 and {$this->enumerationCount}"); |
|
|
|
|
742
|
|
|
} |
743
|
|
|
|
744
|
1 |
|
if ($bit) { |
745
|
1 |
|
$this->{$this->fnDoSetBit}($ordinal); |
746
|
|
|
} else { |
747
|
1 |
|
$this->{$this->fnDoUnsetBit}($ordinal); |
748
|
|
|
} |
749
|
1 |
|
} |
750
|
|
|
|
751
|
|
|
/** |
752
|
|
|
* Set a bit at the given ordinal number. |
753
|
|
|
* |
754
|
|
|
* This is the binary bitset implementation. |
755
|
|
|
* |
756
|
|
|
* @param int $ordinal Ordinal number of bit to set |
|
|
|
|
757
|
|
|
* @return void |
758
|
|
|
* @see setBit() |
759
|
|
|
* @see doSetBitInt() |
760
|
|
|
*/ |
761
|
8 |
|
private function doSetBitBin(int $ordinal): void |
762
|
|
|
{ |
763
|
8 |
|
$byte = (int) ($ordinal / 8); |
764
|
8 |
|
$this->bitset[$byte] = $this->bitset[$byte] | \chr(1 << ($ordinal % 8)); |
765
|
8 |
|
} |
766
|
|
|
|
767
|
|
|
/** |
768
|
|
|
* Set a bit at the given ordinal number. |
769
|
|
|
* |
770
|
|
|
* This is the binary bitset implementation. |
771
|
|
|
* |
772
|
|
|
* @param int $ordinal Ordinal number of bit to set |
|
|
|
|
773
|
|
|
* @return void |
774
|
|
|
* @see setBit() |
775
|
|
|
* @see doSetBitBin() |
776
|
|
|
*/ |
777
|
34 |
|
private function doSetBitInt(int $ordinal): void |
778
|
|
|
{ |
779
|
34 |
|
$this->bitset = $this->bitset | (1 << $ordinal); |
780
|
34 |
|
} |
781
|
|
|
|
782
|
|
|
/** |
783
|
|
|
* Unset a bit at the given ordinal number. |
784
|
|
|
* |
785
|
|
|
* This is the binary bitset implementation. |
786
|
|
|
* |
787
|
|
|
* @param int $ordinal Ordinal number of bit to unset |
|
|
|
|
788
|
|
|
* @return void |
789
|
|
|
* @see setBit() |
790
|
|
|
* @see doUnsetBitInt() |
791
|
|
|
*/ |
792
|
2 |
|
private function doUnsetBitBin(int $ordinal): void |
793
|
|
|
{ |
794
|
2 |
|
$byte = (int) ($ordinal / 8); |
795
|
2 |
|
$this->bitset[$byte] = $this->bitset[$byte] & \chr(~(1 << ($ordinal % 8))); |
796
|
2 |
|
} |
797
|
|
|
|
798
|
|
|
/** |
799
|
|
|
* Unset a bit at the given ordinal number. |
800
|
|
|
* |
801
|
|
|
* This is the integer bitset implementation. |
802
|
|
|
* |
803
|
|
|
* @param int $ordinal Ordinal number of bit to unset |
|
|
|
|
804
|
|
|
* @return void |
805
|
|
|
* @see setBit() |
806
|
|
|
* @see doUnsetBitBin() |
807
|
|
|
*/ |
808
|
3 |
|
private function doUnsetBitInt(int $ordinal): void |
809
|
|
|
{ |
810
|
3 |
|
$this->bitset = $this->bitset & ~(1 << $ordinal); |
811
|
3 |
|
} |
812
|
|
|
} |
813
|
|
|
|