[FIR] Report DUPLICATE_PARAMETER_NAME_IN_FUNCTION_TYPE

^KT-59418 Fixed

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -408,6 +408,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.DUPLICATE_PARAMETER_NAME_IN_FUNCTION_TYPE) { firDiagnostic ->
+        DuplicateParameterNameInFunctionTypeImpl(
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.CREATING_AN_INSTANCE_OF_ABSTRACT_CLASS) { firDiagnostic ->
         CreatingAnInstanceOfAbstractClassImpl(
             firDiagnostic as KtPsiDiagnostic,

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -331,6 +331,10 @@ sealed interface KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         val reference: String
     }
 
+    interface DuplicateParameterNameInFunctionType : KtFirDiagnostic<KtTypeReference> {
+        override val diagnosticClass get() = DuplicateParameterNameInFunctionType::class
+    }
+
     interface CreatingAnInstanceOfAbstractClass : KtFirDiagnostic<KtExpression> {
         override val diagnosticClass get() = CreatingAnInstanceOfAbstractClass::class
     }

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -381,6 +381,11 @@ internal class UnresolvedImportImpl(
     token: KtLifetimeToken,
 ) : KtAbstractFirDiagnostic<PsiElement>(firDiagnostic, token), KtFirDiagnostic.UnresolvedImport
 
+internal class DuplicateParameterNameInFunctionTypeImpl(
+    firDiagnostic: KtPsiDiagnostic,
+    token: KtLifetimeToken,
+) : KtAbstractFirDiagnostic<KtTypeReference>(firDiagnostic, token), KtFirDiagnostic.DuplicateParameterNameInFunctionType
+
 internal class CreatingAnInstanceOfAbstractClassImpl(
     firDiagnostic: KtPsiDiagnostic,
     token: KtLifetimeToken,