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EnumTrait: add a numeric runtimeID field for arrays and switches

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This commit is contained in:
Dylan K. Taylor 2019-08-17 16:36:05 +01:00
parent 69e23998f4
commit a7d51a273d
1 changed files with 21 additions and 0 deletions
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21
src/utils/EnumTrait.php
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@ -23,6 +23,7 @@ declare(strict_types=1);
namespace pocketmine\utils; namespace pocketmine\utils;
use function getmypid;
use function preg_match; use function preg_match;
trait EnumTrait{ trait EnumTrait{
@ -85,8 +86,13 @@ trait EnumTrait{
return self::_registryFromString($name); return self::_registryFromString($name);
} }
/** @var int|null */
private static $nextId = null;
/** @var string */ /** @var string */
private $enumName; private $enumName;
/** @var int */
private $runtimeId;
/** /**
* @param string $enumName * @param string $enumName
@ -98,6 +104,10 @@ trait EnumTrait{
throw new \InvalidArgumentException("Invalid enum member name \"$enumName\", should only contain letters, numbers and underscores, and must not start with a number"); throw new \InvalidArgumentException("Invalid enum member name \"$enumName\", should only contain letters, numbers and underscores, and must not start with a number");
} }
$this->enumName = $enumName; $this->enumName = $enumName;
if(self::$nextId === null){
self::$nextId = getmypid(); //this provides enough base entropy to prevent hardcoding
}
$this->runtimeId = self::$nextId++;
} }
/** /**
@ -107,6 +117,17 @@ trait EnumTrait{
return $this->enumName; return $this->enumName;
} }
/**
* Returns a runtime-only identifier for this enum member. This will be different with each run, so don't try to
* hardcode it.
* This can be useful for switches or array indexing.
*
* @return int
*/
public function id() : int{
return $this->runtimeId;
}
/** /**
* Returns whether the two objects are equivalent. * Returns whether the two objects are equivalent.
* *