Work around the failure of SerialDescriptor to take element names into

account in hashCode/equals. As this is mainly relevant for reuse of
descriptor names we don't override hashcode, but are merely more strict
for equals.

serialization/src/commonMain/kotlin/nl/adaptivity/xmlutil/serialization/DefaultFormatCache.kt

@@ -111,7 +111,18 @@ public class DefaultFormatCache : FormatCache() {
         val canBeAttribute: Boolean
     )
 
-    private data class TypeKey(val namespace: String, val descriptor: SerialDescriptor)
+    private data class TypeKey(val namespace: String, val descriptor: SerialDescriptor) {
+        override fun equals(other: Any?): Boolean {
+            return when {
+                other !is TypeKey -> false
+                namespace != other.namespace -> false
+                descriptor != other.descriptor -> false
+                (0 until descriptor.elementsCount).any { descriptor.getElementName(it) != other.descriptor.getElementName(it) } -> false
+                else -> true
+            }
+            return super.equals(other)
+        }
+    }
 
     private companion object {
         @JvmStatic

serialization/src/commonMain/kotlin/nl/adaptivity/xmlutil/serialization/structure/XmlDescriptor.kt

@@ -1891,11 +1891,11 @@ public class ParentInfo(
 
         other as ParentInfo
 
-        if (descriptor != other.descriptor) return false
         if (index != other.index) return false
         if (overriddenSerializer != other.overriddenSerializer) return false
         if (elementUseNameInfo != other.elementUseNameInfo) return false
-        return elementUseOutputKind == other.elementUseOutputKind
+        if (elementUseOutputKind != other.elementUseOutputKind) return false
+        return descriptor == other.descriptor
     }
 
     override fun hashCode(): Int {

serialization/src/commonMain/kotlin/nl/adaptivity/xmlutil/serialization/structure/XmlTypeDescriptor.kt

@@ -123,8 +123,16 @@ public class XmlTypeDescriptor internal constructor(
 
         other as XmlTypeDescriptor
 
-        if (serialDescriptor != other.serialDescriptor) return false
-        return typeNameInfo == other.typeNameInfo
+        return when {
+            typeNameInfo != other.typeNameInfo -> false
+            serialDescriptor != other.serialDescriptor -> false
+            (0 until serialDescriptor.elementsCount).any {
+                serialDescriptor.getElementName(it) != other.serialDescriptor.getElementName(
+                    it
+                )
+            } -> false
+            else -> true
+        }
     }
 
     override fun hashCode(): Int {

serialization/src/commonTest/kotlin/nl/adaptivity/xml/serialization/regressions/ElementNames254.kt

@@ -41,11 +41,8 @@ class ElementNames254 {
 
     @BeforeTest
     fun setup() {
-        xml= XML {
-            recommended {
-                // TODO Remove this check once a fix exists in the library.
-                formatCache = FormatCache.Dummy
-            }
+        xml = XML {
+            recommended_0_90_2()
             indent = 4
         }
     }