Fixed handling of default params in declaration (KT-23239)

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/components/ArgumentsUtils.kt

@@ -25,7 +25,6 @@ import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
 import org.jetbrains.kotlin.resolve.calls.model.CollectionLiteralKotlinCallArgument
 import org.jetbrains.kotlin.resolve.calls.model.KotlinCallArgument
 import org.jetbrains.kotlin.resolve.calls.model.SimpleKotlinCallArgument
-import org.jetbrains.kotlin.resolve.descriptorUtil.isAnnotationConstructor
 import org.jetbrains.kotlin.resolve.descriptorUtil.isParameterOfAnnotation
 import org.jetbrains.kotlin.resolve.descriptorUtil.module
 import org.jetbrains.kotlin.resolve.multiplatform.ExpectedActualResolver
@@ -70,20 +69,44 @@ fun ValueParameterDescriptor.hasDefaultValue(): Boolean {
     return DFS.ifAny(
         listOf(this),
         { current -> current.overriddenDescriptors.map(ValueParameterDescriptor::getOriginal) },
-        { it.declaresDefaultValue() || it.isActualParameterWithExpectedDefault }
+        { it.declaresDefaultValue() || it.isActualParameterWithAnyExpectedDefault }
     )
 }
 
-val ValueParameterDescriptor.isActualParameterWithExpectedDefault: Boolean
-    get() {
-        val function = containingDeclaration
-        if (function is FunctionDescriptor && function.isActual) {
-            with(ExpectedActualResolver) {
-                val expected = function.findCompatibleExpectedForActual(function.module).firstOrNull()
-                return expected is FunctionDescriptor && expected.valueParameters[index].hasDefaultValue()
-            }
+fun ValueParameterDescriptor.checkExpectedParameter(checker: (ValueParameterDescriptor) -> Boolean) : Boolean {
+    val function = containingDeclaration
+    if (function is FunctionDescriptor && function.isActual) {
+        with(ExpectedActualResolver) {
+            val expected = function.findCompatibleExpectedForActual(function.module).firstOrNull()
+            return expected is FunctionDescriptor && checker(expected.valueParameters[index])
         }
-        return false
+    }
+    return false
+}
+
+/**
+ * The following two properties describe two different situations:
+ *
+ * Consider hierarchy:
+ * expect open class A { foo(p = 1) }
+ * expect open class B  : A { foo(p) }
+ *
+ * actual open class A { foo(p) }
+ * actual open class B : A { foo(p) }
+ *
+ * For parameter `p` of method `foo`:
+ * `Any` property returns `true` for both actual A and B
+ * `Corresponding` property returns `true` only for `actual A` because `expect B` declaration doesn't have an default value
+ */
+
+val ValueParameterDescriptor.isActualParameterWithAnyExpectedDefault: Boolean
+    get() {
+        return checkExpectedParameter { it.hasDefaultValue() }
+    }
+
+val ValueParameterDescriptor.isActualParameterWithCorrespondingExpectedDefault: Boolean
+    get() {
+        return checkExpectedParameter { it.declaresDefaultValue() }
     }
 
 private fun KotlinCallArgument.isArrayAssignedAsNamedArgumentInAnnotation(

compiler/serialization/src/org/jetbrains/kotlin/serialization/DescriptorSerializer.kt

@@ -24,7 +24,7 @@ import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.DescriptorUtils.isEnumEntry
 import org.jetbrains.kotlin.resolve.MemberComparator
 import org.jetbrains.kotlin.resolve.RequireKotlinNames
-import org.jetbrains.kotlin.resolve.calls.components.isActualParameterWithExpectedDefault
+import org.jetbrains.kotlin.resolve.calls.components.isActualParameterWithAnyExpectedDefault
 import org.jetbrains.kotlin.resolve.checkers.KotlinVersionStringAnnotationValueChecker
 import org.jetbrains.kotlin.resolve.constants.EnumValue
 import org.jetbrains.kotlin.resolve.constants.IntValue
@@ -408,7 +408,7 @@ class DescriptorSerializer private constructor(
     private fun valueParameter(descriptor: ValueParameterDescriptor): ProtoBuf.ValueParameter.Builder {
         val builder = ProtoBuf.ValueParameter.newBuilder()
 
-        val declaresDefaultValue = descriptor.declaresDefaultValue() || descriptor.isActualParameterWithExpectedDefault
+        val declaresDefaultValue = descriptor.declaresDefaultValue() || descriptor.isActualParameterWithAnyExpectedDefault
 
         val flags = Flags.getValueParameterFlags(
             hasAnnotations(descriptor), declaresDefaultValue, descriptor.isCrossinline, descriptor.isNoinline

js/js.translator/src/org/jetbrains/kotlin/js/translate/declaration/DeclarationBodyVisitor.kt

@@ -28,7 +28,8 @@ import org.jetbrains.kotlin.js.translate.utils.BindingUtils.getClassDescriptor
 import org.jetbrains.kotlin.js.translate.utils.JsAstUtils.pureFqn
 import org.jetbrains.kotlin.js.translate.utils.JsDescriptorUtils.getSupertypesWithoutFakes
 import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.resolve.descriptorUtil.hasOrInheritsParametersWithDefaultValue
+import org.jetbrains.kotlin.resolve.calls.components.hasDefaultValue
+import org.jetbrains.kotlin.resolve.calls.components.isActualParameterWithCorrespondingExpectedDefault
 import org.jetbrains.kotlin.resolve.descriptorUtil.hasOwnParametersWithDefaultValue
 
 class DeclarationBodyVisitor(
@@ -110,8 +111,12 @@ class DeclarationBodyVisitor(
         initializerStatements.add(statement)
     }
 
+    private fun hasParametersWithDefaultValue(descriptor: FunctionDescriptor) = descriptor.valueParameters.any { it.hasDefaultValue() }
+    private fun hasCorrespondingExpectParametersWithDefaultValue(descriptor: FunctionDescriptor) =
+        descriptor.valueParameters.any { it.isActualParameterWithCorrespondingExpectedDefault }
+
     override fun addFunction(descriptor: FunctionDescriptor, expression: JsExpression?, psi: KtElement?) {
-        if (!descriptor.hasOrInheritsParametersWithDefaultValue() || !descriptor.isOverridableOrOverrides) {
+        if (!hasParametersWithDefaultValue(descriptor) || !descriptor.isOverridableOrOverrides) {
             if (expression != null) {
                 context.addDeclarationStatement(context.addFunctionToPrototype(containingClass, descriptor, expression))
             }
@@ -125,7 +130,7 @@ class DeclarationBodyVisitor(
                 context.addDeclarationStatement(JsAstUtils.assignment(functionRef, expression).makeStmt())
             }
 
-            if (descriptor.hasOwnParametersWithDefaultValue()) {
+            if (descriptor.hasOwnParametersWithDefaultValue() || hasCorrespondingExpectParametersWithDefaultValue(descriptor)) {
                 val caller = JsFunction(context.getScopeForDescriptor(containingClass), JsBlock(), "")
                 caller.source = psi?.finalElement
                 val callerContext = context