Add missing descriptors for SmallFloatType and EnumType

extension.neon

@@ -353,6 +353,9 @@ services:
 	-
 		class: PHPStan\Type\Doctrine\Descriptors\DecimalType
 		tags: [phpstan.doctrine.typeDescriptor]
+	-
+		class: PHPStan\Type\Doctrine\Descriptors\EnumType
+		tags: [phpstan.doctrine.typeDescriptor]
 	-
 		class: PHPStan\Type\Doctrine\Descriptors\FloatType
 		tags: [phpstan.doctrine.typeDescriptor]
@@ -374,6 +377,9 @@ services:
 	-
 		class: PHPStan\Type\Doctrine\Descriptors\SimpleArrayType
 		tags: [phpstan.doctrine.typeDescriptor]
+	-
+		class: PHPStan\Type\Doctrine\Descriptors\SmallFloatType
+		tags: [phpstan.doctrine.typeDescriptor]
 	-
 		class: PHPStan\Type\Doctrine\Descriptors\SmallIntType
 		tags: [phpstan.doctrine.typeDescriptor]

phpstan-baseline-dbal-4.neon

@@ -0,0 +1,33 @@
+parameters:
+	ignoreErrors:
+		-
+			message: '#^Class Doctrine\\DBAL\\Types\\EnumType not found\.$#'
+			identifier: class.notFound
+			count: 1
+			path: src/Type/Doctrine/Descriptors/EnumType.php
+
+		-
+			message: '#^Method PHPStan\\Type\\Doctrine\\Descriptors\\EnumType\:\:getType\(\) should return class\-string\<Doctrine\\DBAL\\Types\\Type\> but returns string\.$#'
+			identifier: return.type
+			count: 1
+			path: src/Type/Doctrine/Descriptors/EnumType.php
+
+		-
+			message: '#^Class Doctrine\\DBAL\\Types\\SmallFloatType not found\.$#'
+			identifier: class.notFound
+			count: 1
+			path: src/Type/Doctrine/Descriptors/SmallFloatType.php
+
+		-
+			message: '#^Method PHPStan\\Type\\Doctrine\\Descriptors\\SmallFloatType\:\:getType\(\) should return class\-string\<Doctrine\\DBAL\\Types\\Type\> but returns string\.$#'
+			identifier: return.type
+			count: 1
+			path: src/Type/Doctrine/Descriptors/SmallFloatType.php
+
+		-
+			message: '#^Class Doctrine\\DBAL\\Types\\EnumType not found\.$#'
+			identifier: class.notFound
+			count: 1
+			path: src/Type/Doctrine/Query/QueryResultTypeWalker.php
+
+

phpstan-baseline.neon

@@ -83,3 +83,9 @@ parameters:
 			identifier: phpstanApi.classConstant
 			count: 1
 			path: tests/Rules/Properties/MissingReadOnlyPropertyAssignRuleTest.php
+
+		-
+			message: '#^Parameter references internal interface Doctrine\\ORM\\Query\\AST\\Phase2OptimizableConditional in its type\.$#'
+			identifier: parameter.internalInterface
+			count: 2
+			path: src/Type/Doctrine/Query/QueryResultTypeWalker.php

phpstan.neon

@@ -4,6 +4,7 @@ includes:
 	- phpstan-baseline.neon
 	- phpstan-baseline-deprecations.neon
 	- phpstan-baseline-dbal-3.neon
+	- phpstan-baseline-dbal-4.neon
 	- compatibility/orm-3-baseline.php
 	- vendor/phpstan/phpstan-strict-rules/rules.neon
 	- vendor/phpstan/phpstan-deprecation-rules/rules.neon

src/Type/Doctrine/Descriptors/EnumType.php

@@ -0,0 +1,31 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Type\Doctrine\Descriptors;
+
+use PHPStan\Type\StringType;
+use PHPStan\Type\Type;
+
+class EnumType implements DoctrineTypeDescriptor
+{
+
+	public function getType(): string
+	{
+		return \Doctrine\DBAL\Types\EnumType::class;
+	}
+
+	public function getWritableToPropertyType(): Type
+	{
+		return new StringType();
+	}
+
+	public function getWritableToDatabaseType(): Type
+	{
+		return new StringType();
+	}
+
+	public function getDatabaseInternalType(): Type
+	{
+		return new StringType();
+	}
+
+}

src/Type/Doctrine/Descriptors/SmallFloatType.php

@@ -0,0 +1,13 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\Type\Doctrine\Descriptors;
+
+class SmallFloatType extends FloatType
+{
+
+	public function getType(): string
+	{
+		return \Doctrine\DBAL\Types\SmallFloatType::class;
+	}
+
+}

src/Type/Doctrine/Query/QueryResultTypeWalker.php

@@ -3,6 +3,7 @@
 namespace PHPStan\Type\Doctrine\Query;
 
 use BackedEnum;
+use Doctrine\DBAL\Types\EnumType as DbalEnumType;
 use Doctrine\DBAL\Types\StringType as DbalStringType;
 use Doctrine\DBAL\Types\Type as DbalType;
 use Doctrine\ORM\EntityManagerInterface;
@@ -1235,6 +1236,7 @@ public function walkSelectExpression($selectExpression): string
 			if (
 				$expr instanceof TypedExpression
 				&& !$expr->getReturnType() instanceof DbalStringType // StringType is no-op, so using TypedExpression with that does nothing
+				&& !$expr->getReturnType() instanceof DbalEnumType // EnumType is also no-op
 			) {
 				$dbalTypeName = DbalType::getTypeRegistry()->lookupName($expr->getReturnType());
 				$type = TypeCombinator::intersect( // e.g. count is typed as int, but we infer int<0, max>