Render flexible types with enhancement as enhanced in IDE (KT-25622)

Main targets for the fix is completion, parameters info, inlay hints and
override/implement.

Other IDE functions might be affected.

 #KT-24911 Fixed
 #KT-25616 Fixed
 #KT-25622 Fixed

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/BasicLookupElementFactory.kt

@@ -31,6 +31,7 @@ import org.jetbrains.kotlin.idea.completion.handlers.KotlinFunctionInsertHandler
 import org.jetbrains.kotlin.idea.core.completion.DeclarationLookupObject
 import org.jetbrains.kotlin.idea.core.completion.PackageLookupObject
 import org.jetbrains.kotlin.idea.highlighter.dsl.DslHighlighterExtension
+import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
 import org.jetbrains.kotlin.load.java.JvmAbi
 import org.jetbrains.kotlin.load.java.descriptors.JavaClassDescriptor
 import org.jetbrains.kotlin.name.FqName
@@ -50,7 +51,10 @@ class BasicLookupElementFactory(
 ) {
     companion object {
         // we skip parameter names in functional types in most of cases for shortness
-        val SHORT_NAMES_RENDERER = DescriptorRenderer.SHORT_NAMES_IN_TYPES.withOptions { parameterNamesInFunctionalTypes = false }
+        val SHORT_NAMES_RENDERER = DescriptorRenderer.SHORT_NAMES_IN_TYPES.withOptions {
+            enhancedTypes = true
+            parameterNamesInFunctionalTypes = false
+        }
     }
 
     fun createLookupElement(

idea/idea-completion/testData/basic/multifile/EnhancementFlexibleTypes/EnhancementFlexibleTypes.java

@@ -0,0 +1,12 @@
+import androidx.annotation.RecentlyNonNull;
+import androidx.annotation.RecentlyNullable;
+
+public class EnhancementFlexibleTypes {
+    public static void testNullable(@RecentlyNullable String string) {
+
+    }
+
+    public static void testNotNull(@RecentlyNonNull String string) {
+
+    }
+}

idea/idea-completion/testData/basic/multifile/EnhancementFlexibleTypes/EnhancementFlexibleTypes.kt

@@ -0,0 +1,6 @@
+fun temp() {
+    EnhancementFlexibleTypes.test<caret>
+}
+
+// EXIST: { lookupString: "testNotNull", tailText:"(string: String)" }
+// EXIST: { lookupString: "testNullable", tailText:"(string: String?)" }

idea/idea-completion/testData/basic/multifile/EnhancementFlexibleTypes/RecentlyNonNull.java

@@ -0,0 +1,8 @@
+package androidx.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Target;
+
+@Target({ElementType.PARAMETER, ElementType.TYPE})
+public @interface RecentlyNonNull {
+}

idea/idea-completion/testData/basic/multifile/EnhancementFlexibleTypes/RecentlyNullable.java

@@ -0,0 +1,9 @@
+package androidx.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Target;
+import java.lang.reflect.Parameter;
+
+@Target({ElementType.PARAMETER, ElementType.TYPE})
+public @interface RecentlyNullable {
+}

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/MultiFileJvmBasicCompletionTestGenerated.java

@@ -74,6 +74,11 @@ public class MultiFileJvmBasicCompletionTestGenerated extends AbstractMultiFileJ
         runTest("idea/idea-completion/testData/basic/multifile/DoNotCompleteWithConstraints/");
     }
 
+    @TestMetadata("EnhancementFlexibleTypes")
+    public void testEnhancementFlexibleTypes() throws Exception {
+        runTest("idea/idea-completion/testData/basic/multifile/EnhancementFlexibleTypes/");
+    }
+
     @TestMetadata("EntriesOfNotImportedEnumFromKotlin")
     public void testEntriesOfNotImportedEnumFromKotlin() throws Exception {
         runTest("idea/idea-completion/testData/basic/multifile/EntriesOfNotImportedEnumFromKotlin/");