KT-56840 [SLC] Don't mark primitive-backed types with @NotNull

analysis/analysis-api/src/org/jetbrains/kotlin/analysis/api/components/KtTypeInfoProvider.kt

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.analysis.api.types.KtTypeNullability
 import org.jetbrains.kotlin.builtins.StandardNames
 import org.jetbrains.kotlin.builtins.functions.FunctionTypeKind
 import org.jetbrains.kotlin.name.ClassId
+import org.jetbrains.org.objectweb.asm.Type
 
 public abstract class KtTypeInfoProvider : KtAnalysisSessionComponent() {
     public abstract fun isFunctionalInterfaceType(type: KtType): Boolean
@@ -143,6 +144,16 @@ public interface KtTypeInfoProviderMixIn : KtAnalysisSessionMixIn {
             return this.classId in DefaultTypeClassIds.PRIMITIVES
         }
 
+    context(KtJvmTypeMapperMixIn)
+    public val KtType.isPrimitiveBacked: Boolean
+        get() = withValidityAssertion {
+            if (this !is KtNonErrorClassType) return false
+            return when (this.mapTypeToJvmType().sort) {
+                Type.BOOLEAN, Type.CHAR, Type.BYTE, Type.SHORT, Type.INT, Type.FLOAT, Type.LONG, Type.DOUBLE -> true
+                else -> false
+            }
+        }
+
     public val KtType.defaultInitializer: String?
         get() = withValidityAssertion {
             when {

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/fields/SymbolLightFieldForProperty.kt

@@ -188,7 +188,7 @@ internal class SymbolLightFieldForProperty private constructor(
                         // NB: not as?, since _initializerValue already checks that
                         (propertySymbol as KtKotlinPropertySymbol).isConst &&
                         // javac rejects all non-primitive and non String constants
-                        (propertySymbol.returnType.isPrimitive || propertySymbol.returnType.isString)
+                        (propertySymbol.returnType.isPrimitiveBacked || propertySymbol.returnType.isString)
             }
         }
     }

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/symbolLightUtils.kt

@@ -126,28 +126,18 @@ internal fun KtAnalysisSession.getTypeNullability(ktType: KtType): NullabilityTy
 
     if (ktType.isUnit) return NullabilityType.NotNull
 
+    if (ktType.isPrimitiveBacked) return NullabilityType.Unknown
+
     if (ktType is KtTypeParameterType) {
         if (ktType.isMarkedNullable) return NullabilityType.Nullable
         val subtypeOfNullableSuperType = ktType.symbol.upperBounds.all { upperBound -> upperBound.canBeNull }
         return if (!subtypeOfNullableSuperType) NullabilityType.NotNull else NullabilityType.Unknown
     }
-    if (ktType !is KtClassType) return NullabilityType.NotNull
-
-    if (!ktType.isPrimitive) {
-        return ktType.nullabilityType
-    }
-
     if (ktType !is KtNonErrorClassType) return NullabilityType.NotNull
     if (ktType.ownTypeArguments.any { it.type is KtClassErrorType }) return NullabilityType.NotNull
     if (ktType.classId.shortClassName.asString() == SpecialNames.ANONYMOUS_STRING) return NullabilityType.NotNull
 
-    val canonicalSignature = ktType.mapTypeToJvmType().descriptor
-
-    if (canonicalSignature == "[L<error>;") return NullabilityType.NotNull
-
-    val isNotPrimitiveType = canonicalSignature.startsWith("L") || canonicalSignature.startsWith("[")
-
-    return if (isNotPrimitiveType) NullabilityType.NotNull else NullabilityType.Unknown
+    return ktType.nullabilityType
 }
 
 internal val KtType.isUnit get() = isClassTypeWithClassId(DefaultTypeClassIds.UNIT)

analysis/symbol-light-classes/tests/org/jetbrains/kotlin/light/classes/symbol/decompiled/SymbolLightClassesByFqNameForLibraryTestGenerated.java

@@ -483,6 +483,12 @@ public class SymbolLightClassesByFqNameForLibraryTestGenerated extends AbstractS
             runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PlatformTypes.kt");
         }
 
+        @Test
+        @TestMetadata("PrimitiveBackedInlineClasses.kt")
+        public void testPrimitiveBackedInlineClasses() throws Exception {
+            runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PrimitiveBackedInlineClasses.kt");
+        }
+
         @Test
         @TestMetadata("Primitives.kt")
         public void testPrimitives() throws Exception {

analysis/symbol-light-classes/tests/org/jetbrains/kotlin/light/classes/symbol/decompiled/SymbolLightClassesParentingForLibraryTestGenerated.java

@@ -483,6 +483,12 @@ public class SymbolLightClassesParentingForLibraryTestGenerated extends Abstract
             runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PlatformTypes.kt");
         }
 
+        @Test
+        @TestMetadata("PrimitiveBackedInlineClasses.kt")
+        public void testPrimitiveBackedInlineClasses() throws Exception {
+            runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PrimitiveBackedInlineClasses.kt");
+        }
+
         @Test
         @TestMetadata("Primitives.kt")
         public void testPrimitives() throws Exception {

analysis/symbol-light-classes/tests/org/jetbrains/kotlin/light/classes/symbol/source/SymbolLightClassesByFqNameForSourceTestGenerated.java

@@ -625,6 +625,12 @@ public class SymbolLightClassesByFqNameForSourceTestGenerated extends AbstractSy
             runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PlatformTypes.kt");
         }
 
+        @Test
+        @TestMetadata("PrimitiveBackedInlineClasses.kt")
+        public void testPrimitiveBackedInlineClasses() throws Exception {
+            runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PrimitiveBackedInlineClasses.kt");
+        }
+
         @Test
         @TestMetadata("Primitives.kt")
         public void testPrimitives() throws Exception {

analysis/symbol-light-classes/tests/org/jetbrains/kotlin/light/classes/symbol/source/SymbolLightClassesParentingForSourceTestGenerated.java

@@ -625,6 +625,12 @@ public class SymbolLightClassesParentingForSourceTestGenerated extends AbstractS
             runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PlatformTypes.kt");
         }
 
+        @Test
+        @TestMetadata("PrimitiveBackedInlineClasses.kt")
+        public void testPrimitiveBackedInlineClasses() throws Exception {
+            runTest("compiler/testData/asJava/lightClasses/lightClassByFqName/nullabilityAnnotations/PrimitiveBackedInlineClasses.kt");
+        }
+
         @Test
         @TestMetadata("Primitives.kt")
         public void testPrimitives() throws Exception {