Declare readonly properties

Author: sebastianbergmann

src/CodeCoverage.php

@@ -39,9 +39,9 @@
 final class CodeCoverage
 {
     private const UNCOVERED_FILES = 'UNCOVERED_FILES';
-    private Driver $driver;
-    private Filter $filter;
-    private Wizard $wizard;
+    private readonly Driver $driver;
+    private readonly Filter $filter;
+    private readonly Wizard $wizard;
     private bool $checkForUnintentionallyCoveredCode = false;
     private bool $includeUncoveredFiles              = true;
     private bool $ignoreDeprecatedCode               = false;

src/Driver/PcovDriver.php

@@ -26,7 +26,7 @@
  */
 final class PcovDriver extends Driver
 {
-    private Filter $filter;
+    private readonly Filter $filter;
 
     /**
      * @throws PcovNotAvailableException

src/Exception/UnintentionallyCoveredCodeException.php

@@ -16,7 +16,7 @@ final class UnintentionallyCoveredCodeException extends RuntimeException impleme
     /**
      * @var list<string>
      */
-    private array $unintentionallyCoveredUnits;
+    private readonly array $unintentionallyCoveredUnits;
 
     /**
      * @param list<string> $unintentionallyCoveredUnits

src/Node/AbstractNode.php

@@ -22,10 +22,10 @@
  */
 abstract class AbstractNode implements Countable
 {
-    private string $name;
+    private readonly string $name;
     private string $pathAsString;
     private array $pathAsArray;
-    private ?AbstractNode $parent;
+    private readonly ?AbstractNode $parent;
     private string $id;
 
     public function __construct(string $name, self $parent = null)

src/Node/Builder.php

@@ -30,7 +30,7 @@
  */
 final class Builder
 {
-    private FileAnalyser $analyser;
+    private readonly FileAnalyser $analyser;
 
     public function __construct(FileAnalyser $analyser)
     {

src/Node/CrapIndex.php

@@ -16,8 +16,8 @@
  */
 final class CrapIndex
 {
-    private int $cyclomaticComplexity;
-    private float $codeCoverage;
+    private readonly int $cyclomaticComplexity;
+    private readonly float $codeCoverage;
 
     public function __construct(int $cyclomaticComplexity, float $codeCoverage)
     {

src/Node/File.php

@@ -20,7 +20,7 @@ final class File extends AbstractNode
 {
     private array $lineCoverageData;
     private array $functionCoverageData;
-    private array $testData;
+    private readonly array $testData;
     private int $numExecutableLines    = 0;
     private int $numExecutedLines      = 0;
     private int $numExecutableBranches = 0;
@@ -34,7 +34,7 @@ final class File extends AbstractNode
     /**
      * @psalm-return array{linesOfCode: int, commentLinesOfCode: int, nonCommentLinesOfCode: int}
      */
-    private array $linesOfCode;
+    private readonly array $linesOfCode;
     private ?int $numClasses         = null;
     private int $numTestedClasses    = 0;
     private ?int $numTraits          = null;

src/Node/Iterator.php

@@ -22,7 +22,7 @@ final class Iterator implements RecursiveIterator
     /**
      * @var list<AbstractNode>
      */
-    private array $nodes;
+    private readonly array $nodes;
 
     public function __construct(Directory $node)
     {

src/Report/Crap4j.php

@@ -23,7 +23,7 @@
 
 final class Crap4j
 {
-    private int $threshold;
+    private readonly int $threshold;
 
     public function __construct(int $threshold = 30)
     {

src/Report/Html/Colors.php

@@ -14,11 +14,11 @@
  */
 final class Colors
 {
-    private string $successLow;
-    private string $successMedium;
-    private string $successHigh;
-    private string $warning;
-    private string $danger;
+    private readonly string $successLow;
+    private readonly string $successMedium;
+    private readonly string $successHigh;
+    private readonly string $warning;
+    private readonly string $danger;
 
     public static function default(): self
     {