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<?php |
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declare(strict_types=1); |
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namespace Dflydev\FiniteStateMachine\Guard; |
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use Dflydev\FiniteStateMachine\Contracts\GuardCallback; |
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use Dflydev\FiniteStateMachine\State\State; |
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use Dflydev\FiniteStateMachine\Transition\Transition; |
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class Guard |
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{ |
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private string $name; |
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private array $transitionNames; |
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private array $fromStateNames; |
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private array $toStateNames; |
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private GuardCallback $callback; |
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public function __construct( |
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string $name, |
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array $transitionNames, |
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array $fromStateNames, |
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array $toStateNames, |
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GuardCallback $callback |
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) { |
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$this->name = $name; |
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$this->transitionNames = $transitionNames; |
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$this->fromStateNames = $fromStateNames; |
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$this->toStateNames = $toStateNames; |
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$this->callback = $callback; |
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} |
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public function name(): string |
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{ |
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return $this->name; |
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} |
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public function cannot(object $object, Transition $transition, State $fromState, State $toState): bool |
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{ |
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$matches = []; |
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if (count($this->transitionNames) > 0) { |
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$matches[] = in_array($transition->name(), $this->transitionNames); |
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} |
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if (count($this->fromStateNames) > 0) { |
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$matches[] = in_array($fromState->name(), $this->fromStateNames); |
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} |
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if (count($this->toStateNames) > 0) { |
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$matches[] = in_array($toState->name(), $this->toStateNames); |
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} |
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if (count($matches) === 0) { |
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return false; |
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} |
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if (in_array(false, $matches)) { |
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return false; |
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} |
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return ! $this->callback->__invoke($object, $transition, $fromState, $toState); |
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} |
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} |
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dflydev /
dflydev-finite-state-machine
