120 lines
2.9 KiB
PHP
120 lines
2.9 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Workflow;
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use Symfony\Component\Workflow\Exception\InvalidArgumentException;
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use Symfony\Component\Workflow\Exception\LogicException;
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/**
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Grégoire Pineau <lyrixx@lyrixx.info>
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* @author Tobias Nyholm <tobias.nyholm@gmail.com>
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*/
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final class Definition
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{
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private $places = array();
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private $transitions = array();
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private $initialPlace;
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/**
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* Definition constructor.
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*
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* @param string[] $places
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* @param Transition[] $transitions
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* @param string|null $initialPlace
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*/
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public function __construct(array $places, array $transitions, $initialPlace = null)
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{
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$this->addPlaces($places);
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$this->setInitialPlace($initialPlace);
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foreach ($transitions as $transition) {
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$this->addTransition($transition);
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}
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}
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/**
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* @return string|null
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*/
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public function getInitialPlace()
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{
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return $this->initialPlace;
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}
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/**
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* @return string[]
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*/
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public function getPlaces()
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{
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return $this->places;
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}
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/**
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* @return Transition[]
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*/
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public function getTransitions()
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{
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return $this->transitions;
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}
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private function setInitialPlace($place)
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{
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if (null === $place) {
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return;
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}
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if (!isset($this->places[$place])) {
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throw new LogicException(sprintf('Place "%s" cannot be the initial place as it does not exist.', $place));
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}
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$this->initialPlace = $place;
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}
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private function addPlace($place)
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{
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if (!preg_match('{^[\w\d_-]+$}', $place)) {
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throw new InvalidArgumentException(sprintf('The place "%s" contains invalid characters.', $place));
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}
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if (!count($this->places)) {
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$this->initialPlace = $place;
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}
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$this->places[$place] = $place;
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}
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private function addPlaces(array $places)
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{
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foreach ($places as $place) {
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$this->addPlace($place);
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}
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}
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private function addTransition(Transition $transition)
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{
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$name = $transition->getName();
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foreach ($transition->getFroms() as $from) {
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if (!isset($this->places[$from])) {
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throw new LogicException(sprintf('Place "%s" referenced in transition "%s" does not exist.', $from, $name));
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}
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}
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foreach ($transition->getTos() as $to) {
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if (!isset($this->places[$to])) {
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throw new LogicException(sprintf('Place "%s" referenced in transition "%s" does not exist.', $to, $name));
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}
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}
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$this->transitions[] = $transition;
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}
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}
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