Introduce SimpleFunctionDescriptor.createCopyWithNewValueParameters

core/descriptors/src/org/jetbrains/kotlin/descriptors/SimpleFunctionDescriptor.java

@@ -19,6 +19,8 @@ package org.jetbrains.kotlin.descriptors;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.kotlin.name.Name;
 
+import java.util.List;
+
 /**
  * Simple functions are the ones with 'fun' keyword and function literals
  */
@@ -30,6 +32,9 @@ public interface SimpleFunctionDescriptor extends FunctionDescriptor {
     @NotNull
     SimpleFunctionDescriptor createRenamedCopy(@NotNull Name name);
 
+    @NotNull
+    SimpleFunctionDescriptor createCopyWithNewValueParameters(@NotNull List<ValueParameterDescriptor> valueParameters);
+
     @NotNull
     @Override
     SimpleFunctionDescriptor getOriginal();

core/descriptors/src/org/jetbrains/kotlin/descriptors/impl/SimpleFunctionDescriptorImpl.java

@@ -115,4 +115,14 @@ public class SimpleFunctionDescriptorImpl extends FunctionDescriptorImpl impleme
                 null, /* copyOverrides = */ true, getKind(), getValueParameters(), getExtensionReceiverParameterType(), getReturnType(), name
         );
     }
+
+    @NotNull
+    @Override
+    public SimpleFunctionDescriptor createCopyWithNewValueParameters(@NotNull List<ValueParameterDescriptor> valueParameters) {
+        return (SimpleFunctionDescriptorImpl) doSubstitute(
+                TypeSubstitutor.EMPTY, getContainingDeclaration(), getModality(), getVisibility(),
+                isOperator(), isInfix(), isExternal(), isInline(), isTailrec(),
+                null, /* copyOverrides = */ true, getKind(), valueParameters, getExtensionReceiverParameterType(), getReturnType(), null
+        );
+    }
 }

core/descriptors/src/org/jetbrains/kotlin/types/error/ErrorSimpleFunctionDescriptorImpl.java

@@ -25,6 +25,8 @@ import org.jetbrains.kotlin.descriptors.impl.SimpleFunctionDescriptorImpl;
 import org.jetbrains.kotlin.name.Name;
 import org.jetbrains.kotlin.types.ErrorUtils;
 
+import java.util.List;
+
 public class ErrorSimpleFunctionDescriptorImpl extends SimpleFunctionDescriptorImpl {
     // used for diagnostic only
     @SuppressWarnings({"UnusedDeclaration", "FieldCanBeLocal"})
@@ -58,6 +60,12 @@ public class ErrorSimpleFunctionDescriptorImpl extends SimpleFunctionDescriptorI
         return this;
     }
 
+    @NotNull
+    @Override
+    public SimpleFunctionDescriptor createCopyWithNewValueParameters(@NotNull List<ValueParameterDescriptor> valueParameters) {
+        return this;
+    }
+
     @Override
     public void addOverriddenDescriptor(@NotNull CallableMemberDescriptor overriddenFunction) {
         // nop