[dart] Fix switch on enums not possible (#8512)

All enum instances are `const` so `equals/hashCode` is not needed.
Removing this allows to `switch/case` on enum instances.

modules/openapi-generator/src/main/resources/dart2/enum.mustache

@@ -6,13 +6,6 @@ class {{{classname}}} {
   /// The underlying value of this enum member.
   final {{{dataType}}} value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is {{{classname}}} && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value{{^isString}}.toString(){{/isString}};
 

modules/openapi-generator/src/main/resources/dart2/enum_inline.mustache

@@ -6,13 +6,6 @@ class {{{classname}}}{{{enumName}}} {
   /// The underlying value of this enum member.
   final {{{dataType}}} value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is {{{classname}}}{{{enumName}}} && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value{{^isString}}.toString(){{/isString}};
 

samples/client/petstore/dart2/petstore_client_lib/lib/model/order.dart

@@ -125,13 +125,6 @@ class OrderStatusEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is OrderStatusEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/client/petstore/dart2/petstore_client_lib/lib/model/pet.dart

@@ -125,13 +125,6 @@ class PetStatusEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is PetStatusEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib/lib/model/order.dart

@@ -125,13 +125,6 @@ class OrderStatusEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is OrderStatusEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib/lib/model/pet.dart

@@ -125,13 +125,6 @@ class PetStatusEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is PetStatusEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/enum_arrays.dart

@@ -86,13 +86,6 @@ class EnumArraysJustSymbolEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is EnumArraysJustSymbolEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 
@@ -159,13 +152,6 @@ class EnumArraysArrayEnumEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is EnumArraysArrayEnumEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/enum_class.dart

@@ -17,13 +17,6 @@ class EnumClass {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is EnumClass && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/enum_test.dart

@@ -140,13 +140,6 @@ class EnumTestEnumStringEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is EnumTestEnumStringEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 
@@ -216,13 +209,6 @@ class EnumTestEnumStringRequiredEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is EnumTestEnumStringRequiredEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 
@@ -292,13 +278,6 @@ class EnumTestEnumIntegerEnum {
   /// The underlying value of this enum member.
   final int value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is EnumTestEnumIntegerEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value.toString();
 
@@ -365,13 +344,6 @@ class EnumTestEnumNumberEnum {
   /// The underlying value of this enum member.
   final double value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is EnumTestEnumNumberEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value.toString();
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/map_test.dart

@@ -112,13 +112,6 @@ class MapTestInnerEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is MapTestInnerEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/order.dart

@@ -125,13 +125,6 @@ class OrderStatusEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is OrderStatusEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/outer_enum.dart

@@ -17,13 +17,6 @@ class OuterEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is OuterEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/outer_enum_default_value.dart

@@ -17,13 +17,6 @@ class OuterEnumDefaultValue {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is OuterEnumDefaultValue && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/outer_enum_integer.dart

@@ -17,13 +17,6 @@ class OuterEnumInteger {
   /// The underlying value of this enum member.
   final int value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is OuterEnumInteger && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value.toString();
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/outer_enum_integer_default_value.dart

@@ -17,13 +17,6 @@ class OuterEnumIntegerDefaultValue {
   /// The underlying value of this enum member.
   final int value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is OuterEnumIntegerDefaultValue && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value.toString();
 

samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/model/pet.dart

@@ -125,13 +125,6 @@ class PetStatusEnum {
   /// The underlying value of this enum member.
   final String value;
 
-  @override
-  bool operator ==(Object other) => identical(this, other) ||
-      other is PetStatusEnum && other.value == value;
-
-  @override
-  int get hashCode => toString().hashCode;
-
   @override
   String toString() => value;