[FE 1.0] Don't report deprecation diagnostics about enum on it's own entries

^KT-37975 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -8873,6 +8873,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                 runTest("compiler/testData/diagnostics/tests/deprecated/unusedImport.kt");
             }
 
+            @Test
+            @TestMetadata("usageOnEnum.kt")
+            public void testUsageOnEnum() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/deprecated/usageOnEnum.kt");
+            }
+
             @Test
             @TestMetadata("warningOnConstructorErrorOnClass.kt")
             public void testWarningOnConstructorErrorOnClass() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java

@@ -8873,6 +8873,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
                 runTest("compiler/testData/diagnostics/tests/deprecated/unusedImport.kt");
             }
 
+            @Test
+            @TestMetadata("usageOnEnum.kt")
+            public void testUsageOnEnum() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/deprecated/usageOnEnum.kt");
+            }
+
             @Test
             @TestMetadata("warningOnConstructorErrorOnClass.kt")
             public void testWarningOnConstructorErrorOnClass() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java

@@ -8873,6 +8873,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
                 runTest("compiler/testData/diagnostics/tests/deprecated/unusedImport.kt");
             }
 
+            @Test
+            @TestMetadata("usageOnEnum.kt")
+            public void testUsageOnEnum() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/deprecated/usageOnEnum.kt");
+            }
+
             @Test
             @TestMetadata("warningOnConstructorErrorOnClass.kt")
             public void testWarningOnConstructorErrorOnClass() throws Exception {

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/DeprecatedClassifierUsageChecker.kt

@@ -17,14 +17,27 @@
 package org.jetbrains.kotlin.resolve.checkers
 
 import com.intellij.psi.PsiElement
+import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.descriptors.ClassifierDescriptor
+import org.jetbrains.kotlin.descriptors.ConstructorDescriptor
+import org.jetbrains.kotlin.psi.KtEnumEntrySuperclassReferenceExpression
 import org.jetbrains.kotlin.psi.KtThisExpression
+import org.jetbrains.kotlin.psi.synthetics.findClassDescriptor
+import org.jetbrains.kotlin.resolve.calls.util.getResolvedCall
 import org.jetbrains.kotlin.resolve.deprecation.createDeprecationDiagnostic
 
 class DeprecatedClassifierUsageChecker : ClassifierUsageChecker {
     override fun check(targetDescriptor: ClassifierDescriptor, element: PsiElement, context: ClassifierUsageCheckerContext) {
         if (element.parent is KtThisExpression) return
 
+        if (context.languageVersionSettings.supportsFeature(LanguageFeature.NoDeprecationOnDeprecatedEnumEntries) && element is KtEnumEntrySuperclassReferenceExpression) {
+            val referencedEnum =
+                (element.getResolvedCall(context.trace.bindingContext)?.resultingDescriptor as? ConstructorDescriptor)?.constructedClass
+            if (referencedEnum == targetDescriptor) {
+                return
+            }
+        }
+
         for (deprecation in context.deprecationResolver.getDeprecations(targetDescriptor)) {
             context.trace.report(createDeprecationDiagnostic(element, deprecation, context.languageVersionSettings))
         }

compiler/testData/diagnostics/tests/deprecated/usageOnEnum.kt

@@ -0,0 +1,8 @@
+// FIR_IDENTICAL
+// LANGUAGE: +NoDeprecationOnDeprecatedEnumEntries
+// ISSUE: KT-37975
+
+@Deprecated("")
+enum class Foo(val x: Int) {
+    A(42)
+}

compiler/testData/diagnostics/tests/deprecated/usageOnEnum.txt

@@ -0,0 +1,21 @@
+package
+
+@kotlin.Deprecated(message = "") public final enum class Foo : kotlin.Enum<Foo> {
+    enum entry A
+
+    private constructor Foo(/*0*/ x: kotlin.Int)
+    public final override /*1*/ /*fake_override*/ val name: kotlin.String
+    public final override /*1*/ /*fake_override*/ val ordinal: kotlin.Int
+    public final val x: kotlin.Int
+    protected final override /*1*/ /*fake_override*/ fun clone(): kotlin.Any
+    public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: Foo): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    protected/*protected and package*/ final override /*1*/ /*fake_override*/ /*isHiddenForResolutionEverywhereBesideSupercalls*/ fun finalize(): kotlin.Unit
+    public final override /*1*/ /*fake_override*/ /*isHiddenForResolutionEverywhereBesideSupercalls*/ fun getDeclaringClass(): java.lang.Class<Foo!>!
+    public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    // Static members
+    public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): Foo
+    public final /*synthesized*/ fun values(): kotlin.Array<Foo>
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -8879,6 +8879,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                 runTest("compiler/testData/diagnostics/tests/deprecated/unusedImport.kt");
             }
 
+            @Test
+            @TestMetadata("usageOnEnum.kt")
+            public void testUsageOnEnum() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/deprecated/usageOnEnum.kt");
+            }
+
             @Test
             @TestMetadata("warningOnConstructorErrorOnClass.kt")
             public void testWarningOnConstructorErrorOnClass() throws Exception {

compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt

@@ -246,6 +246,7 @@ enum class LanguageFeature(
     InlineClassImplementationByDelegation(KOTLIN_1_7),
     QualifiedSupertypeMayBeExtendedByOtherSupertype(KOTLIN_1_7),
     YieldIsNoMoreReserved(KOTLIN_1_7),
+    NoDeprecationOnDeprecatedEnumEntries(KOTLIN_1_7), // KT-37975
 
     // 1.8