getAllRegexMatchingStates() public static method

get all states that match a possible regex state from the set of states provided
public static getAllRegexMatchingStates ( State $regex, State[] $targets ) : State[]
$regex izzum\statemachine\State a possible regex state.
$targets izzum\statemachine\State[] all target State instances that we check the regex against.
return izzum\statemachine\State[] an array of State instances from the $targets State instances that matched the (negated) regex, or the $regex State if it was not a regex State after all.
コード例 #1
0
 /**
  * Add a fully configured transition to the machine.
  *
  * It is possible to add transition that have 'regex' states: states that
  * have a name in the format of 'regex:/<regex-here>/' or 'not-regex:/<regex-here>/'. 
  * When adding a transition with a regex state, it will be matched against all currently
  * known states if there is a match. If you just want to use regex transitions, 
  * it might be preferable to store some states via 'addState' first, so the 
  * 
  * Self transitions for regex states are disallowed by default
  * since you would probably only want to do that explicitly. Regex states
  * can be both the 'to' and the 'from' state of a transition.
  *
  * Transitions from a 'final' type of state are not allowed.
  *
  * the order in which transitions are added matters insofar that when a
  * StateMachine::run() is called, the first Transition for the current State
  * will be tried first.
  *
  * Since a transition has complete knowledge about it's states,
  * the addition of a transition will also trigger the adding of the
  * to and from state on this class.
  *
  * this method can also be used to add a Transition directly (instead of via
  * a loader). Make sure that transitions that share a common State use the same
  * instance of that State object and vice versa.
  *
  * @param Transition $transition  
  * @param boolean $allow_self_transition_by_regex optional: to allow regexes to set a self transition.
  * @return int a count of how many transitions were added. In case of a regex transition this might be
  *              multiple and in case a transition already exists it might be 0.
  */
 public function addTransition(Transition $transition, $allow_self_transition_by_regex = false)
 {
     $from = $transition->getStateFrom();
     $to = $transition->getStateTo();
     $all_states = $this->getStates();
     // check if we have regex states in the transition and get either the
     // original state back if it's not a regex, or all currently known
     // states that match the regex.
     $all_from = Utils::getAllRegexMatchingStates($from, $all_states);
     $all_to = Utils::getAllRegexMatchingStates($to, $all_states);
     $contains_regex = $from->isRegex() || $to->isRegex();
     $non_regex_transition = $transition;
     $count = 0;
     // loop trought all possible 'from' states
     foreach ($all_from as $from) {
         // loop through all possible 'to' states
         foreach ($all_to as $to) {
             if ($contains_regex && $from->getName() === $to->getName() && !$allow_self_transition_by_regex) {
                 // disallow self transition for regexes and from final states unless it is explicitely allowed.
                 continue;
             }
             if ($contains_regex) {
                 /*
                  * get a copy of the current transition that has a regex (so
                  * we have a non-regex state) and delegate to $transition to
                  * get that copy in case it's a subclass of transition and
                  * we need to copy specific fields
                  */
                 $non_regex_transition = $transition->getCopy($from, $to);
             }
             if ($this->addTransitionWithoutRegex($non_regex_transition)) {
                 $count++;
             }
         }
     }
     return $count;
 }
コード例 #2
0
 /**
  * @test
  * @group regex
  */
 public function shouldReturnArrayOfMatchedStates()
 {
     $a = new State('a');
     $b = new State('ab');
     $c = new State('ba');
     $d = new State('abracadabra');
     $e = new State('action-hero');
     $f = new State('action-bad-guy');
     $g = new State('ac');
     $targets = array($a, $b, $c, $d, $e, $f, $g);
     $regex = new State('regex:/.*/');
     $this->assertEquals($targets, Utils::getAllRegexMatchingStates($regex, $targets));
     $regex = new State('regex:/^a.*/');
     $this->assertEquals(array($a, $b, $d, $e, $f, $g), Utils::getAllRegexMatchingStates($regex, $targets));
     $regex = new State('regex:/^a.+/');
     $this->assertEquals(array($b, $d, $e, $f, $g), Utils::getAllRegexMatchingStates($regex, $targets));
     $regex = new State('regex:/^a.*a.+$/');
     $this->assertEquals(array($d, $f), Utils::getAllRegexMatchingStates($regex, $targets));
     $regex = new State('regex:/^ac.*-.+$/');
     $this->assertEquals(array($e, $f), Utils::getAllRegexMatchingStates($regex, $targets));
     $regex = new State('ac');
     $this->assertFalse($regex->isRegex());
     $this->assertEquals(array($g), Utils::getAllRegexMatchingStates($regex, $targets), 'non regex state');
 }