Sub 200 warnings on static analysis

src/TrueSkill/FactorGraphTrueSkillCalculator.php

@@ -44,7 +44,7 @@ class FactorGraphTrueSkillCalculator extends SkillCalculator
         return $factorGraph->getUpdatedRatings();
     }
 
-    public function calculateMatchQuality(GameInfo $gameInfo, array $teams)
+    public function calculateMatchQuality(GameInfo $gameInfo, array $teams): float
     {
         // We need to create the A matrix which is the player team assigments.
         $teamAssignmentsList = $teams;

src/TrueSkill/Factors/GaussianLikelihoodFactor.php

@@ -25,7 +25,7 @@ class GaussianLikelihoodFactor extends GaussianFactor
         $this->createVariableToMessageBinding($variable2);
     }
 
-    public function getLogNormalization()
+    public function getLogNormalization(): float
     {
         /** @var KeyedVariable[]|mixed $vars */
         $vars = $this->getVariables();

src/TrueSkill/Factors/GaussianPriorFactor.php

@@ -15,7 +15,7 @@ class GaussianPriorFactor extends GaussianFactor
 {
     private $_newMessage;
 
-    public function __construct($mean, $variance, Variable $variable)
+    public function __construct(float $mean, float $variance, Variable $variable)
     {
         parent::__construct(sprintf('Prior value going to %s', $variable));
         $this->_newMessage = new GaussianDistribution($mean, sqrt($variance));
@@ -25,7 +25,7 @@ class GaussianPriorFactor extends GaussianFactor
         $this->createVariableToMessageBindingWithMessage($variable, $newMessage);
     }
 
-    protected function updateMessageVariable(Message $message, Variable $variable)
+    protected function updateMessageVariable(Message $message, Variable $variable): float
     {
         $oldMarginal = clone $variable->getValue();
         $oldMessage = $message;

src/TrueSkill/Factors/GaussianWeightedSumFactor.php

@@ -127,7 +127,7 @@ class GaussianWeightedSumFactor extends GaussianFactor
         return $result;
     }
 
-    private function updateHelper(array $weights, array $weightsSquared, array $messages, array $variables)
+    private function updateHelper(array $weights, array $weightsSquared, array $messages, array $variables): float
     {
         // Potentially look at http://mathworld.wolfram.com/NormalSumDistribution.html for clues as
         // to what it's doing
@@ -182,7 +182,7 @@ class GaussianWeightedSumFactor extends GaussianFactor
         return $finalDiff;
     }
 
-    public function updateMessageIndex($messageIndex)
+    public function updateMessageIndex(int $messageIndex): float
     {
         $allMessages = $this->getMessages();
         $allVariables = $this->getVariables();

src/TrueSkill/Layers/PlayerPerformancesToTeamPerformancesLayer.php

@@ -3,6 +3,7 @@
 namespace DNW\Skills\TrueSkill\Layers;
 
 use DNW\Skills\FactorGraphs\ScheduleStep;
+use DNW\Skills\FactorGraphs\ScheduleSequence;
 use DNW\Skills\PartialPlay;
 use DNW\Skills\TrueSkill\Factors\GaussianWeightedSumFactor;
 
@@ -24,7 +25,7 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
         }
     }
 
-    public function createPriorSchedule()
+    public function createPriorSchedule(): ScheduleSequence
     {
         $localFactors = $this->getLocalFactors();
 
@@ -35,7 +36,7 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
             'all player perf to team perf schedule');
     }
 
-    protected function createPlayerToTeamSumFactor($teamMembers, $sumVariable)
+    protected function createPlayerToTeamSumFactor($teamMembers, $sumVariable): GaussianWeightedSumFactor 
     {
         $weights = array_map(
             function ($v) {
@@ -51,7 +52,7 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
             $weights);
     }
 
-    public function createPosteriorSchedule()
+    public function createPosteriorSchedule(): ScheduleSequence
     {
         $allFactors = [];
         $localFactors = $this->getLocalFactors();

src/TrueSkill/TrueSkillFactorGraph.php

@@ -46,7 +46,7 @@ class TrueSkillFactorGraph extends FactorGraph
         return $this->_gameInfo;
     }
 
-    public function buildGraph()
+    public function buildGraph(): void
     {
         $lastOutput = null;
 
@@ -62,13 +62,13 @@ class TrueSkillFactorGraph extends FactorGraph
         }
     }
 
-    public function runSchedule()
+    public function runSchedule(): void
     {
         $fullSchedule = $this->createFullSchedule();
         $fullSchedule->visit();
     }
 
-    public function getProbabilityOfRanking()
+    public function getProbabilityOfRanking(): float
     {
         $factorList = new FactorList();
 
@@ -86,7 +86,7 @@ class TrueSkillFactorGraph extends FactorGraph
         return exp($logZ);
     }
 
-    private function createFullSchedule()
+    private function createFullSchedule(): ScheduleSequence
     {
         $fullSchedule = [];
 

src/TrueSkill/TwoPlayerTrueSkillCalculator.php

@@ -123,7 +123,7 @@ class TwoPlayerTrueSkillCalculator extends SkillCalculator
     /**
      * {@inheritdoc}
      */
-    public function calculateMatchQuality(GameInfo $gameInfo, array $teams)
+    public function calculateMatchQuality(GameInfo $gameInfo, array $teams): float
     {
         Guard::argumentNotNull($gameInfo, 'gameInfo');
         $this->validateTeamCountAndPlayersCountPerTeam($teams);