Introduce ClassReflection::getClassTypeDescription()

Author: ondrejmirtes

src/Reflection/ClassReflection.php

@@ -595,6 +595,22 @@ public function isEnum(): bool
 		return $this->reflection->isEnum();
 	}
 
+	/**
+	 * @return 'Interface'|'Trait'|'Enum'|'Class'
+	 */
+	public function getClassTypeDescription(): string
+	{
+		if ($this->isInterface()) {
+			return 'Interface';
+		} elseif ($this->isTrait()) {
+			return 'Trait';
+		} elseif ($this->isEnum()) {
+			return 'Enum';
+		}
+
+		return 'Class';
+	}
+
 	public function isReadOnly(): bool
 	{
 		return $this->reflection->isReadOnly();

src/Rules/Api/ApiInstanceofRule.php

@@ -14,6 +14,7 @@
 use PHPStan\Type\UnionType;
 use function count;
 use function sprintf;
+use function strtolower;
 
 /**
  * @implements Rule<Node\Expr\Instanceof_>
@@ -52,9 +53,9 @@ public function processNode(Node $node, Scope $scope): array
 		$ruleError = RuleErrorBuilder::message(sprintf(
 			'Asking about instanceof %s is not covered by backward compatibility promise. The %s might change in a minor PHPStan version.',
 			$classReflection->getDisplayName(),
-			$classReflection->isInterface() ? 'interface' : 'class',
+			strtolower($classReflection->getClassTypeDescription()),
 		))
-			->identifier(sprintf('phpstanApi.%s', $classReflection->isInterface() ? 'interface' : 'class'))
+			->identifier(sprintf('phpstanApi.%s', strtolower($classReflection->getClassTypeDescription())))
 			->tip(sprintf(
 				"If you think it should be covered by backward compatibility promise, open a discussion:\n   %s\n\n   See also:\n   https://phpstan.org/developing-extensions/backward-compatibility-promise",
 				'https://github.com/phpstan/phpstan/discussions',

src/Rules/AttributesCheck.php

@@ -53,16 +53,7 @@ public function check(
 
 				$attributeClass = $this->reflectionProvider->getClass($name);
 				if (!$attributeClass->isAttributeClass()) {
-					$classLikeDescription = 'Class';
-					if ($attributeClass->isInterface()) {
-						$classLikeDescription = 'Interface';
-					} elseif ($attributeClass->isTrait()) {
-						$classLikeDescription = 'Trait';
-					} elseif ($attributeClass->isEnum()) {
-						$classLikeDescription = 'Enum';
-					}
-
-					$errors[] = RuleErrorBuilder::message(sprintf('%s %s is not an Attribute class.', $classLikeDescription, $attributeClass->getDisplayName()))
+					$errors[] = RuleErrorBuilder::message(sprintf('%s %s is not an Attribute class.', $attributeClass->getClassTypeDescription(), $attributeClass->getDisplayName()))
 						->identifier('attribute.notAttribute')
 						->line($attribute->getLine())
 						->build();

src/Rules/ClassCaseSensitivityCheck.php

@@ -2,7 +2,6 @@
 
 namespace PHPStan\Rules;
 
-use PHPStan\Reflection\ClassReflection;
 use PHPStan\Reflection\ReflectionProvider;
 use function sprintf;
 use function strtolower;
@@ -38,7 +37,7 @@ public function checkClassNames(array $pairs): array
 				continue;
 			}
 
-			$typeName = $this->getTypeName($classReflection);
+			$typeName = $classReflection->getClassTypeDescription();
 			$errors[] = RuleErrorBuilder::message(sprintf(
 				'%s %s referenced with incorrect case: %s.',
 				$typeName,
@@ -53,20 +52,4 @@ public function checkClassNames(array $pairs): array
 		return $errors;
 	}
 
-	/**
-	 * @return 'Interface'|'Trait'|'Enum'|'Class'
-	 */
-	private function getTypeName(ClassReflection $classReflection): string
-	{
-		if ($classReflection->isInterface()) {
-			return 'Interface';
-		} elseif ($classReflection->isTrait()) {
-			return 'Trait';
-		} elseif ($classReflection->isEnum()) {
-			return 'Enum';
-		}
-
-		return 'Class';
-	}
-
 }

src/Rules/Classes/AllowedSubTypesRule.php

@@ -9,6 +9,7 @@
 use PHPStan\Rules\RuleErrorBuilder;
 use function array_values;
 use function sprintf;
+use function strtolower;
 
 /**
  * @implements Rule<InClassNode>
@@ -53,13 +54,7 @@ public function processNode(Node $node, Scope $scope): array
 				}
 			}
 
-			$identifierType = 'class';
-			if ($classReflection->isInterface()) {
-				$identifierType = 'interface';
-			} elseif ($classReflection->isEnum()) {
-				$identifierType = 'enum';
-			}
-
+			$identifierType = strtolower($classReflection->getClassTypeDescription());
 			$messages[] = RuleErrorBuilder::message(sprintf(
 				'Type %s is not allowed to be a subtype of %s.',
 				$className,

src/Rules/Classes/DuplicateClassDeclarationRule.php

@@ -15,6 +15,7 @@
 use function count;
 use function implode;
 use function sprintf;
+use function strtolower;
 
 /**
  * @implements Rule<InClassNode>
@@ -51,12 +52,7 @@ public function processNode(Node $node, Scope $scope): array
 
 		$filteredClasses = array_filter($filteredClasses, static fn (ReflectionClass $class) => $class->getStartLine() !== $thisClass->getNativeReflection()->getStartLine());
 
-		$identifierType = 'class';
-		if ($thisClass->isInterface()) {
-			$identifierType = 'interface';
-		} elseif ($thisClass->isEnum()) {
-			$identifierType = 'enum';
-		}
+		$identifierType = strtolower($thisClass->getClassTypeDescription());
 
 		return [
 			RuleErrorBuilder::message(sprintf(

src/Rules/Classes/DuplicateDeclarationRule.php

@@ -33,12 +33,7 @@ public function processNode(Node $node, Scope $scope): array
 			throw new ShouldNotHappenException();
 		}
 
-		$identifierType = 'class';
-		if ($classReflection->isInterface()) {
-			$identifierType = 'interface';
-		} elseif ($classReflection->isEnum()) {
-			$identifierType = 'enum';
-		}
+		$identifierType = strtolower($classReflection->getClassTypeDescription());
 
 		$errors = [];
 

src/Rules/Classes/NonClassAttributeClassRule.php

@@ -10,6 +10,7 @@
 use PHPStan\Rules\RuleErrorBuilder;
 use PHPStan\ShouldNotHappenException;
 use function sprintf;
+use function strtolower;
 
 /**
  * @implements Rule<InClassNode>
@@ -50,9 +51,9 @@ private function check(Scope $scope): array
 			return [
 				RuleErrorBuilder::message(sprintf(
 					'%s cannot be an Attribute class.',
-					$classReflection->isInterface() ? 'Interface' : 'Enum',
+					$classReflection->getClassTypeDescription(),
 				))
-					->identifier(sprintf('attribute.%s', $classReflection->isInterface() ? 'interface' : 'enum'))
+					->identifier(sprintf('attribute.%s', strtolower($classReflection->getClassTypeDescription())))
 					->build(),
 			];
 		}

src/Rules/Generics/GenericObjectTypeCheck.php

@@ -16,6 +16,7 @@
 use function count;
 use function implode;
 use function sprintf;
+use function strtolower;
 
 class GenericObjectTypeCheck
 {
@@ -39,14 +40,7 @@ public function check(
 				continue;
 			}
 
-			$classLikeDescription = 'class';
-			if ($classReflection->isInterface()) {
-				$classLikeDescription = 'interface';
-			} elseif ($classReflection->isTrait()) {
-				$classLikeDescription = 'trait';
-			} elseif ($classReflection->isEnum()) {
-				$classLikeDescription = 'enum';
-			}
+			$classLikeDescription = strtolower($classReflection->getClassTypeDescription());
 			if (!$classReflection->isGeneric()) {
 				$messages[] = RuleErrorBuilder::message(sprintf($classNotGenericMessage, $genericType->describe(VerbosityLevel::typeOnly()), $classLikeDescription, $classReflection->getDisplayName()))
 					->identifier('generics.notGeneric')

src/Rules/Generics/UsedTraitsRule.php

@@ -12,6 +12,7 @@
 use PHPStan\Type\Type;
 use function array_map;
 use function sprintf;
+use function strtolower;
 use function ucfirst;
 
 /**
@@ -56,11 +57,11 @@ public function processNode(Node $node, Scope $scope): array
 			$useTags = $resolvedPhpDoc->getUsesTags();
 		}
 
-		$description = sprintf('class %s', SprintfHelper::escapeFormatString($className));
-		$typeDescription = 'class';
+		$typeDescription = strtolower($scope->getClassReflection()->getClassTypeDescription());
+		$description = sprintf('%s %s', $typeDescription, SprintfHelper::escapeFormatString($className));
 		if ($traitName !== null) {
-			$description = sprintf('trait %s', SprintfHelper::escapeFormatString($traitName));
 			$typeDescription = 'trait';
+			$description = sprintf('%s %s', $typeDescription, SprintfHelper::escapeFormatString($traitName));
 		}
 
 		return $this->genericAncestorsCheck->check(