typealias expansion fixes

- Exception on dynamic type in typealias argument expansion
 #KT-18858 Fixed Target versions 1.1.5
- Wrong report location for repeated annotations in typealias arguments
 #KT-18940 Fixed Target versions 1.1.5
- Don't drop type annotations for dynamic type
 #KT-18944 Fixed Target versions 1.1.5

compiler/frontend/src/org/jetbrains/kotlin/resolve/TypeAliasExpander.kt

@@ -19,7 +19,7 @@ package org.jetbrains.kotlin.resolve
 import org.jetbrains.kotlin.descriptors.TypeAliasDescriptor
 import org.jetbrains.kotlin.descriptors.TypeParameterDescriptor
 import org.jetbrains.kotlin.descriptors.annotations.Annotations
-import org.jetbrains.kotlin.descriptors.annotations.CompositeAnnotations
+import org.jetbrains.kotlin.descriptors.annotations.composeAnnotations
 import org.jetbrains.kotlin.resolve.scopes.MemberScope
 import org.jetbrains.kotlin.types.*
 import org.jetbrains.kotlin.types.typeUtil.containsTypeAliasParameters
@@ -53,6 +53,7 @@ class TypeAliasExpander(
             "Type alias expansion: result for ${typeAliasExpansion.descriptor} is ${expandedProjection.projectionKind}, should be invariant"
         }
 
+        checkRepeatedAnnotations(expandedType.annotations, annotations)
         val expandedTypeWithExtraAnnotations = expandedType.combineAnnotations(annotations).let { TypeUtils.makeNullableIfNeeded(it, isNullable) }
 
         return if (withAbbreviatedType)
@@ -82,59 +83,72 @@ class TypeAliasExpander(
         if (underlyingProjection.isStarProjection) return TypeUtils.makeStarProjection(typeParameterDescriptor!!)
 
         val underlyingType = underlyingProjection.type
-        val argument = typeAliasExpansion.getReplacement(underlyingType.constructor)
-
-        if (argument == null) {
-            return expandNonArgumentTypeProjection(underlyingProjection, typeAliasExpansion, recursionDepth)
-        }
+        val argument = typeAliasExpansion.getReplacement(underlyingType.constructor) ?:
+                       return expandNonArgumentTypeProjection(underlyingProjection, typeAliasExpansion, recursionDepth)
 
         if (argument.isStarProjection) return TypeUtils.makeStarProjection(typeParameterDescriptor!!)
 
-        val argumentVariance = argument.projectionKind
-        val underlyingVariance = underlyingProjection.projectionKind
+        val argumentType = argument.type.unwrap()
 
-        val argumentType = argument.type.unwrap().asSimpleType()
+        val resultingVariance = run {
+            val argumentVariance = argument.projectionKind
+            val underlyingVariance = underlyingProjection.projectionKind
 
-        val substitutionVariance =
-                when {
-                    underlyingVariance == argumentVariance -> argumentVariance
-                    underlyingVariance == Variance.INVARIANT -> argumentVariance
-                    argumentVariance == Variance.INVARIANT -> underlyingVariance
-                    else -> {
-                        reportStrategy.conflictingProjection(typeAliasExpansion.descriptor, typeParameterDescriptor, argumentType)
-                        argumentVariance
+            val substitutionVariance =
+                    when {
+                        underlyingVariance == argumentVariance -> argumentVariance
+                        underlyingVariance == Variance.INVARIANT -> argumentVariance
+                        argumentVariance == Variance.INVARIANT -> underlyingVariance
+                        else -> {
+                            reportStrategy.conflictingProjection(typeAliasExpansion.descriptor, typeParameterDescriptor, argumentType)
+                            argumentVariance
+                        }
                     }
-                }
 
-        val parameterVariance = typeParameterDescriptor?.variance ?: Variance.INVARIANT
-        val resultingVariance =
-                when {
-                    parameterVariance == substitutionVariance -> substitutionVariance
-                    parameterVariance == Variance.INVARIANT -> substitutionVariance
-                    substitutionVariance == Variance.INVARIANT -> Variance.INVARIANT
-                    else -> {
-                        reportStrategy.conflictingProjection(typeAliasExpansion.descriptor, typeParameterDescriptor, argumentType)
-                        substitutionVariance
-                    }
-                }
+            val parameterVariance = typeParameterDescriptor?.variance ?: Variance.INVARIANT
 
-        val substitutedType = argumentType.combineNullabilityAndAnnotations(underlyingType)
+            when {
+                parameterVariance == substitutionVariance -> substitutionVariance
+                parameterVariance == Variance.INVARIANT -> substitutionVariance
+                substitutionVariance == Variance.INVARIANT -> Variance.INVARIANT
+                else -> {
+                    reportStrategy.conflictingProjection(typeAliasExpansion.descriptor, typeParameterDescriptor, argumentType)
+                    substitutionVariance
+                }
+            }
+        }
+
+        checkRepeatedAnnotations(underlyingType.annotations, argumentType.annotations)
+
+        val substitutedType =
+                if (argumentType is DynamicType)
+                    argumentType.combineAnnotations(underlyingType.annotations)
+                else
+                    argumentType.asSimpleType().combineNullabilityAndAnnotations(underlyingType)
 
         return TypeProjectionImpl(resultingVariance, substitutedType)
     }
 
-    private fun SimpleType.combineAnnotations(annotations: Annotations): SimpleType {
-        if (isError) return this
+    private fun DynamicType.combineAnnotations(newAnnotations: Annotations): DynamicType =
+            replaceAnnotations(createCombinedAnnotations(newAnnotations))
 
-        val existingAnnotationTypes = this.annotations.getAllAnnotations().mapTo(hashSetOf<KotlinType>()) { it.annotation.type }
+    private fun SimpleType.combineAnnotations(newAnnotations: Annotations): SimpleType =
+            if (isError) this else replace(newAnnotations = createCombinedAnnotations(newAnnotations))
 
-        for (annotation in annotations) {
+    private fun KotlinType.createCombinedAnnotations(newAnnotations: Annotations): Annotations {
+        if (isError) return annotations
+
+        return composeAnnotations(newAnnotations, annotations)
+    }
+
+    private fun checkRepeatedAnnotations(existingAnnotations: Annotations, newAnnotations: Annotations) {
+        val existingAnnotationTypes = existingAnnotations.mapTo(hashSetOf()) { it.type }
+
+        for (annotation in newAnnotations) {
             if (annotation.type in existingAnnotationTypes) {
                 reportStrategy.repeatedAnnotation(annotation)
             }
         }
-
-        return replace(newAnnotations = CompositeAnnotations(listOf(annotations, this.annotations)))
     }
 
     private fun SimpleType.combineNullability(fromType: KotlinType) =
@@ -148,7 +162,11 @@ class TypeAliasExpander(
             typeAliasExpansion: TypeAliasExpansion,
             recursionDepth: Int
     ): TypeProjection {
-        val type = originalProjection.type.asSimpleType()
+        val originalType = originalProjection.type.unwrap()
+
+        if (originalType.isDynamic()) return originalProjection
+
+        val type = originalType.asSimpleType()
 
         if (type.isError || !type.requiresTypeAliasExpansion()) {
             return originalProjection

compiler/frontend/src/org/jetbrains/kotlin/resolve/TypeResolver.kt

@@ -301,7 +301,7 @@ class TypeResolver(
             }
 
             override fun visitDynamicType(type: KtDynamicType) {
-                result = type(dynamicCallableDescriptors.dynamicType)
+                result = type(dynamicCallableDescriptors.dynamicType.replaceAnnotations(annotations))
                 if (!dynamicTypesSettings.dynamicTypesAllowed) {
                     c.trace.report(UNSUPPORTED.on(type, "Dynamic types are not supported in this context"))
                 }

compiler/testData/diagnostics/tests/typealias/typealiasRhsRepeatedAnnotationInArguments.kt

@@ -0,0 +1,6 @@
+@Target(AnnotationTarget.TYPE)
+annotation class A
+
+typealias Gen<T> = List<@A T>
+
+typealias Test1 = Gen<<!REPEATED_ANNOTATION!>@A<!> Int>

compiler/testData/diagnostics/tests/typealias/typealiasRhsRepeatedAnnotationInArguments.txt

@@ -0,0 +1,10 @@
+package
+
+@kotlin.annotation.Target(allowedTargets = {AnnotationTarget.TYPE}) public final annotation class A : kotlin.Annotation {
+    public constructor A()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+public typealias Gen</*0*/ T>  = kotlin.collections.List<@A T>
+public typealias Test1 = Gen<@A kotlin.Int>

compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/typealiasWithAnnotatedDynamic.kt

@@ -0,0 +1,16 @@
+@Target(AnnotationTarget.TYPE)
+annotation class Ann1
+
+@Target(AnnotationTarget.TYPE)
+annotation class Ann2
+
+typealias AnnGenList<T> = List<@Ann1 T>
+typealias TestAnnGen1 = AnnGenList<dynamic>
+typealias TestAnnGen2 = AnnGenList<@Ann2 dynamic>
+typealias TestAnnGen3 = AnnGenList<<!REPEATED_ANNOTATION!>@Ann1<!> dynamic>
+
+fun useAnnGen1(x: TestAnnGen1) = x
+fun useAnnGen2(x: TestAnnGen2) = x
+
+fun testUseAnnGen1(x: List<dynamic>) = useAnnGen1(x)
+fun testUseAnnGen2(x: List<dynamic>) = useAnnGen2(x)

compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/typealiasWithAnnotatedDynamic.txt

@@ -0,0 +1,24 @@
+package
+
+public fun testUseAnnGen1(/*0*/ x: kotlin.collections.List<dynamic>): TestAnnGen1 /* = kotlin.collections.List<dynamic> */
+public fun testUseAnnGen2(/*0*/ x: kotlin.collections.List<dynamic>): TestAnnGen2 /* = kotlin.collections.List<dynamic> */
+public fun useAnnGen1(/*0*/ x: TestAnnGen1 /* = kotlin.collections.List<dynamic> */): TestAnnGen1 /* = kotlin.collections.List<dynamic> */
+public fun useAnnGen2(/*0*/ x: TestAnnGen2 /* = kotlin.collections.List<dynamic> */): TestAnnGen2 /* = kotlin.collections.List<dynamic> */
+
+@kotlin.annotation.Target(allowedTargets = {AnnotationTarget.TYPE}) public final annotation class Ann1 : kotlin.Annotation {
+    public constructor Ann1()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+@kotlin.annotation.Target(allowedTargets = {AnnotationTarget.TYPE}) public final annotation class Ann2 : kotlin.Annotation {
+    public constructor Ann2()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+public typealias AnnGenList</*0*/ T>  = kotlin.collections.List<@Ann1 T>
+public typealias TestAnnGen1 = AnnGenList<dynamic>
+public typealias TestAnnGen2 = AnnGenList<dynamic>
+public typealias TestAnnGen3 = AnnGenList<dynamic>

compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/typealiasWithDynamic.kt

@@ -0,0 +1,13 @@
+typealias Test1 = List<dynamic>
+
+typealias Test2 = (dynamic) -> dynamic
+
+typealias GenList<T> = List<T>
+typealias TestGen1 = GenList<dynamic>
+typealias TestGen2 = GenList<GenList<dynamic>>
+
+fun useGen1(x: TestGen1) = x
+fun useGen2(x: TestGen2) = x
+
+fun testUseGen1(x: List<dynamic>) = useGen1(x)
+fun testUseGen2(x: List<List<dynamic>>) = useGen2(x)

compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/typealiasWithDynamic.txt

@@ -0,0 +1,11 @@
+package
+
+public fun testUseGen1(/*0*/ x: kotlin.collections.List<dynamic>): TestGen1 /* = kotlin.collections.List<dynamic> */
+public fun testUseGen2(/*0*/ x: kotlin.collections.List<kotlin.collections.List<dynamic>>): TestGen2 /* = kotlin.collections.List<kotlin.collections.List<dynamic>> */
+public fun useGen1(/*0*/ x: TestGen1 /* = kotlin.collections.List<dynamic> */): TestGen1 /* = kotlin.collections.List<dynamic> */
+public fun useGen2(/*0*/ x: TestGen2 /* = kotlin.collections.List<kotlin.collections.List<dynamic>> */): TestGen2 /* = kotlin.collections.List<kotlin.collections.List<dynamic>> */
+public typealias GenList</*0*/ T>  = kotlin.collections.List<T>
+public typealias Test1 = kotlin.collections.List<dynamic>
+public typealias Test2 = (dynamic) -> dynamic
+public typealias TestGen1 = GenList<dynamic>
+public typealias TestGen2 = GenList<GenList<dynamic>>

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -23014,6 +23014,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("typealiasRhsRepeatedAnnotationInArguments.kt")
+            public void testTypealiasRhsRepeatedAnnotationInArguments() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/typealias/typealiasRhsRepeatedAnnotationInArguments.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("typealiasRhsRepeatedAnnotations.kt")
             public void testTypealiasRhsRepeatedAnnotations() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/typealias/typealiasRhsRepeatedAnnotations.kt");

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestWithJsStdLibGenerated.java

@@ -314,6 +314,18 @@ public class DiagnosticsTestWithJsStdLibGenerated extends AbstractDiagnosticsTes
             doTest(fileName);
         }
 
+        @TestMetadata("typealiasWithAnnotatedDynamic.kt")
+        public void testTypealiasWithAnnotatedDynamic() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/typealiasWithAnnotatedDynamic.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("typealiasWithDynamic.kt")
+        public void testTypealiasWithDynamic() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/typealiasWithDynamic.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("varargs.kt")
         public void testVarargs() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/varargs.kt");

core/descriptors/src/org/jetbrains/kotlin/types/dynamicTypes.kt

@@ -44,7 +44,7 @@ class DynamicType(builtIns: KotlinBuiltIns, override val annotations: Annotation
 
     override val isMarkedNullable: Boolean get() = false
 
-    override fun replaceAnnotations(newAnnotations: Annotations): DynamicType = DynamicType(delegate.builtIns, annotations)
+    override fun replaceAnnotations(newAnnotations: Annotations): DynamicType = DynamicType(delegate.builtIns, newAnnotations)
 
     override fun render(renderer: DescriptorRenderer, options: DescriptorRendererOptions): String = "dynamic"
 }