1#[derive(::std::clone::Clone, ::std::default::Default, ::std::fmt::Debug)]
4#[non_exhaustive]
5pub struct GetTokensFromRefreshToken;
6impl GetTokensFromRefreshToken {
7 pub fn new() -> Self {
9 Self
10 }
11 pub(crate) async fn orchestrate(
12 runtime_plugins: &::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins,
13 input: crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenInput,
14 ) -> ::std::result::Result<
15 crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenOutput,
16 ::aws_smithy_runtime_api::client::result::SdkError<
17 crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenError,
18 ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
19 >,
20 > {
21 let map_err = |err: ::aws_smithy_runtime_api::client::result::SdkError<
22 ::aws_smithy_runtime_api::client::interceptors::context::Error,
23 ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
24 >| {
25 err.map_service_error(|err| {
26 err.downcast::<crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenError>()
27 .expect("correct error type")
28 })
29 };
30 let context = Self::orchestrate_with_stop_point(runtime_plugins, input, ::aws_smithy_runtime::client::orchestrator::StopPoint::None)
31 .await
32 .map_err(map_err)?;
33 let output = context.finalize().map_err(map_err)?;
34 ::std::result::Result::Ok(
35 output
36 .downcast::<crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenOutput>()
37 .expect("correct output type"),
38 )
39 }
40
41 pub(crate) async fn orchestrate_with_stop_point(
42 runtime_plugins: &::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins,
43 input: crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenInput,
44 stop_point: ::aws_smithy_runtime::client::orchestrator::StopPoint,
45 ) -> ::std::result::Result<
46 ::aws_smithy_runtime_api::client::interceptors::context::InterceptorContext,
47 ::aws_smithy_runtime_api::client::result::SdkError<
48 ::aws_smithy_runtime_api::client::interceptors::context::Error,
49 ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
50 >,
51 > {
52 let input = ::aws_smithy_runtime_api::client::interceptors::context::Input::erase(input);
53 use ::tracing::Instrument;
54 ::aws_smithy_runtime::client::orchestrator::invoke_with_stop_point(
55 "Cognito Identity Provider",
56 "GetTokensFromRefreshToken",
57 input,
58 runtime_plugins,
59 stop_point,
60 )
61 .instrument(::tracing::debug_span!(
64 "Cognito Identity Provider.GetTokensFromRefreshToken",
65 "rpc.service" = "Cognito Identity Provider",
66 "rpc.method" = "GetTokensFromRefreshToken",
67 "sdk_invocation_id" = ::fastrand::u32(1_000_000..10_000_000),
68 "rpc.system" = "aws-api",
69 ))
70 .await
71 }
72
73 pub(crate) fn operation_runtime_plugins(
74 client_runtime_plugins: ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins,
75 client_config: &crate::config::Config,
76 config_override: ::std::option::Option<crate::config::Builder>,
77 ) -> ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins {
78 let mut runtime_plugins = client_runtime_plugins.with_operation_plugin(Self::new());
79
80 if let ::std::option::Option::Some(config_override) = config_override {
81 for plugin in config_override.runtime_plugins.iter().cloned() {
82 runtime_plugins = runtime_plugins.with_operation_plugin(plugin);
83 }
84 runtime_plugins = runtime_plugins.with_operation_plugin(crate::config::ConfigOverrideRuntimePlugin::new(
85 config_override,
86 client_config.config.clone(),
87 &client_config.runtime_components,
88 ));
89 }
90 runtime_plugins
91 }
92}
93impl ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugin for GetTokensFromRefreshToken {
94 fn config(&self) -> ::std::option::Option<::aws_smithy_types::config_bag::FrozenLayer> {
95 let mut cfg = ::aws_smithy_types::config_bag::Layer::new("GetTokensFromRefreshToken");
96
97 cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedRequestSerializer::new(
98 GetTokensFromRefreshTokenRequestSerializer,
99 ));
100 cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedResponseDeserializer::new(
101 GetTokensFromRefreshTokenResponseDeserializer,
102 ));
103
104 cfg.store_put(::aws_smithy_runtime_api::client::auth::AuthSchemeOptionResolverParams::new(
105 crate::config::auth::Params::builder()
106 .operation_name("GetTokensFromRefreshToken")
107 .build()
108 .expect("required fields set"),
109 ));
110
111 cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::SensitiveOutput);
112 cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::Metadata::new(
113 "GetTokensFromRefreshToken",
114 "Cognito Identity Provider",
115 ));
116
117 ::std::option::Option::Some(cfg.freeze())
118 }
119
120 fn runtime_components(
121 &self,
122 _: &::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder,
123 ) -> ::std::borrow::Cow<'_, ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder> {
124 #[allow(unused_mut)]
125 let mut rcb = ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder::new("GetTokensFromRefreshToken")
126 .with_interceptor(::aws_smithy_runtime::client::stalled_stream_protection::StalledStreamProtectionInterceptor::default())
127 .with_interceptor(GetTokensFromRefreshTokenEndpointParamsInterceptor)
128 .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::TransientErrorClassifier::<
129 crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenError,
130 >::new())
131 .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::ModeledAsRetryableClassifier::<
132 crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenError,
133 >::new())
134 .with_retry_classifier(::aws_runtime::retries::classifiers::AwsErrorCodeClassifier::<
135 crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenError,
136 >::new());
137
138 ::std::borrow::Cow::Owned(rcb)
139 }
140}
141
142#[derive(Debug)]
143struct GetTokensFromRefreshTokenResponseDeserializer;
144impl ::aws_smithy_runtime_api::client::ser_de::DeserializeResponse for GetTokensFromRefreshTokenResponseDeserializer {
145 fn deserialize_nonstreaming(
146 &self,
147 response: &::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
148 ) -> ::aws_smithy_runtime_api::client::interceptors::context::OutputOrError {
149 let (success, status) = (response.status().is_success(), response.status().as_u16());
150 let headers = response.headers();
151 let body = response.body().bytes().expect("body loaded");
152 #[allow(unused_mut)]
153 let mut force_error = false;
154 ::tracing::debug!(request_id = ?::aws_types::request_id::RequestId::request_id(response));
155 let parse_result = if !success && status != 200 || force_error {
156 crate::protocol_serde::shape_get_tokens_from_refresh_token::de_get_tokens_from_refresh_token_http_error(status, headers, body)
157 } else {
158 crate::protocol_serde::shape_get_tokens_from_refresh_token::de_get_tokens_from_refresh_token_http_response(status, headers, body)
159 };
160 crate::protocol_serde::type_erase_result(parse_result)
161 }
162}
163#[derive(Debug)]
164struct GetTokensFromRefreshTokenRequestSerializer;
165impl ::aws_smithy_runtime_api::client::ser_de::SerializeRequest for GetTokensFromRefreshTokenRequestSerializer {
166 #[allow(unused_mut, clippy::let_and_return, clippy::needless_borrow, clippy::useless_conversion)]
167 fn serialize_input(
168 &self,
169 input: ::aws_smithy_runtime_api::client::interceptors::context::Input,
170 _cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
171 ) -> ::std::result::Result<::aws_smithy_runtime_api::client::orchestrator::HttpRequest, ::aws_smithy_runtime_api::box_error::BoxError> {
172 let input = input
173 .downcast::<crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenInput>()
174 .expect("correct type");
175 let _header_serialization_settings = _cfg
176 .load::<crate::serialization_settings::HeaderSerializationSettings>()
177 .cloned()
178 .unwrap_or_default();
179 let mut request_builder = {
180 #[allow(clippy::uninlined_format_args)]
181 fn uri_base(
182 _input: &crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenInput,
183 output: &mut ::std::string::String,
184 ) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::BuildError> {
185 use ::std::fmt::Write as _;
186 ::std::write!(output, "/").expect("formatting should succeed");
187 ::std::result::Result::Ok(())
188 }
189 #[allow(clippy::unnecessary_wraps)]
190 fn update_http_builder(
191 input: &crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenInput,
192 builder: ::http::request::Builder,
193 ) -> ::std::result::Result<::http::request::Builder, ::aws_smithy_types::error::operation::BuildError> {
194 let mut uri = ::std::string::String::new();
195 uri_base(input, &mut uri)?;
196 ::std::result::Result::Ok(builder.method("POST").uri(uri))
197 }
198 let mut builder = update_http_builder(&input, ::http::request::Builder::new())?;
199 builder = _header_serialization_settings.set_default_header(builder, ::http::header::CONTENT_TYPE, "application/x-amz-json-1.1");
200 builder = _header_serialization_settings.set_default_header(
201 builder,
202 ::http::header::HeaderName::from_static("x-amz-target"),
203 "AWSCognitoIdentityProviderService.GetTokensFromRefreshToken",
204 );
205 builder
206 };
207 let body = ::aws_smithy_types::body::SdkBody::from(
208 crate::protocol_serde::shape_get_tokens_from_refresh_token::ser_get_tokens_from_refresh_token_input(&input)?,
209 );
210 if let Some(content_length) = body.content_length() {
211 let content_length = content_length.to_string();
212 request_builder = _header_serialization_settings.set_default_header(request_builder, ::http::header::CONTENT_LENGTH, &content_length);
213 }
214 ::std::result::Result::Ok(request_builder.body(body).expect("valid request").try_into().unwrap())
215 }
216}
217#[derive(Debug)]
218struct GetTokensFromRefreshTokenEndpointParamsInterceptor;
219
220impl ::aws_smithy_runtime_api::client::interceptors::Intercept for GetTokensFromRefreshTokenEndpointParamsInterceptor {
221 fn name(&self) -> &'static str {
222 "GetTokensFromRefreshTokenEndpointParamsInterceptor"
223 }
224
225 fn read_before_execution(
226 &self,
227 context: &::aws_smithy_runtime_api::client::interceptors::context::BeforeSerializationInterceptorContextRef<
228 '_,
229 ::aws_smithy_runtime_api::client::interceptors::context::Input,
230 ::aws_smithy_runtime_api::client::interceptors::context::Output,
231 ::aws_smithy_runtime_api::client::interceptors::context::Error,
232 >,
233 cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
234 ) -> ::std::result::Result<(), ::aws_smithy_runtime_api::box_error::BoxError> {
235 let _input = context
236 .input()
237 .downcast_ref::<GetTokensFromRefreshTokenInput>()
238 .ok_or("failed to downcast to GetTokensFromRefreshTokenInput")?;
239
240 let params = crate::config::endpoint::Params::builder()
241 .set_region(cfg.load::<::aws_types::region::Region>().map(|r| r.as_ref().to_owned()))
242 .set_use_dual_stack(cfg.load::<::aws_types::endpoint_config::UseDualStack>().map(|ty| ty.0))
243 .set_use_fips(cfg.load::<::aws_types::endpoint_config::UseFips>().map(|ty| ty.0))
244 .set_endpoint(cfg.load::<::aws_types::endpoint_config::EndpointUrl>().map(|ty| ty.0.clone()))
245 .build()
246 .map_err(|err| {
247 ::aws_smithy_runtime_api::client::interceptors::error::ContextAttachedError::new("endpoint params could not be built", err)
248 })?;
249 cfg.interceptor_state()
250 .store_put(::aws_smithy_runtime_api::client::endpoint::EndpointResolverParams::new(params));
251 ::std::result::Result::Ok(())
252 }
253}
254
255#[non_exhaustive]
260#[derive(::std::fmt::Debug)]
261pub enum GetTokensFromRefreshTokenError {
262 ForbiddenException(crate::types::error::ForbiddenException),
264 InternalErrorException(crate::types::error::InternalErrorException),
266 InvalidLambdaResponseException(crate::types::error::InvalidLambdaResponseException),
268 InvalidParameterException(crate::types::error::InvalidParameterException),
270 NotAuthorizedException(crate::types::error::NotAuthorizedException),
272 RefreshTokenReuseException(crate::types::error::RefreshTokenReuseException),
274 ResourceNotFoundException(crate::types::error::ResourceNotFoundException),
276 TooManyRequestsException(crate::types::error::TooManyRequestsException),
278 UnexpectedLambdaException(crate::types::error::UnexpectedLambdaException),
280 UserLambdaValidationException(crate::types::error::UserLambdaValidationException),
282 UserNotFoundException(crate::types::error::UserNotFoundException),
284 #[deprecated(note = "Matching `Unhandled` directly is not forwards compatible. Instead, match using a \
286 variable wildcard pattern and check `.code()`:
287 \
288 `err if err.code() == Some(\"SpecificExceptionCode\") => { /* handle the error */ }`
289 \
290 See [`ProvideErrorMetadata`](#impl-ProvideErrorMetadata-for-GetTokensFromRefreshTokenError) for what information is available for the error.")]
291 Unhandled(crate::error::sealed_unhandled::Unhandled),
292}
293impl GetTokensFromRefreshTokenError {
294 pub fn unhandled(
296 err: impl ::std::convert::Into<::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>>,
297 ) -> Self {
298 Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
299 source: err.into(),
300 meta: ::std::default::Default::default(),
301 })
302 }
303
304 pub fn generic(err: ::aws_smithy_types::error::ErrorMetadata) -> Self {
306 Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
307 source: err.clone().into(),
308 meta: err,
309 })
310 }
311 pub fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
316 match self {
317 Self::ForbiddenException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
318 Self::InternalErrorException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
319 Self::InvalidLambdaResponseException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
320 Self::InvalidParameterException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
321 Self::NotAuthorizedException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
322 Self::RefreshTokenReuseException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
323 Self::ResourceNotFoundException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
324 Self::TooManyRequestsException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
325 Self::UnexpectedLambdaException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
326 Self::UserLambdaValidationException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
327 Self::UserNotFoundException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
328 Self::Unhandled(e) => &e.meta,
329 }
330 }
331 pub fn is_forbidden_exception(&self) -> bool {
333 matches!(self, Self::ForbiddenException(_))
334 }
335 pub fn is_internal_error_exception(&self) -> bool {
337 matches!(self, Self::InternalErrorException(_))
338 }
339 pub fn is_invalid_lambda_response_exception(&self) -> bool {
341 matches!(self, Self::InvalidLambdaResponseException(_))
342 }
343 pub fn is_invalid_parameter_exception(&self) -> bool {
345 matches!(self, Self::InvalidParameterException(_))
346 }
347 pub fn is_not_authorized_exception(&self) -> bool {
349 matches!(self, Self::NotAuthorizedException(_))
350 }
351 pub fn is_refresh_token_reuse_exception(&self) -> bool {
353 matches!(self, Self::RefreshTokenReuseException(_))
354 }
355 pub fn is_resource_not_found_exception(&self) -> bool {
357 matches!(self, Self::ResourceNotFoundException(_))
358 }
359 pub fn is_too_many_requests_exception(&self) -> bool {
361 matches!(self, Self::TooManyRequestsException(_))
362 }
363 pub fn is_unexpected_lambda_exception(&self) -> bool {
365 matches!(self, Self::UnexpectedLambdaException(_))
366 }
367 pub fn is_user_lambda_validation_exception(&self) -> bool {
369 matches!(self, Self::UserLambdaValidationException(_))
370 }
371 pub fn is_user_not_found_exception(&self) -> bool {
373 matches!(self, Self::UserNotFoundException(_))
374 }
375}
376impl ::std::error::Error for GetTokensFromRefreshTokenError {
377 fn source(&self) -> ::std::option::Option<&(dyn ::std::error::Error + 'static)> {
378 match self {
379 Self::ForbiddenException(_inner) => ::std::option::Option::Some(_inner),
380 Self::InternalErrorException(_inner) => ::std::option::Option::Some(_inner),
381 Self::InvalidLambdaResponseException(_inner) => ::std::option::Option::Some(_inner),
382 Self::InvalidParameterException(_inner) => ::std::option::Option::Some(_inner),
383 Self::NotAuthorizedException(_inner) => ::std::option::Option::Some(_inner),
384 Self::RefreshTokenReuseException(_inner) => ::std::option::Option::Some(_inner),
385 Self::ResourceNotFoundException(_inner) => ::std::option::Option::Some(_inner),
386 Self::TooManyRequestsException(_inner) => ::std::option::Option::Some(_inner),
387 Self::UnexpectedLambdaException(_inner) => ::std::option::Option::Some(_inner),
388 Self::UserLambdaValidationException(_inner) => ::std::option::Option::Some(_inner),
389 Self::UserNotFoundException(_inner) => ::std::option::Option::Some(_inner),
390 Self::Unhandled(_inner) => ::std::option::Option::Some(&*_inner.source),
391 }
392 }
393}
394impl ::std::fmt::Display for GetTokensFromRefreshTokenError {
395 fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
396 match self {
397 Self::ForbiddenException(_inner) => _inner.fmt(f),
398 Self::InternalErrorException(_inner) => _inner.fmt(f),
399 Self::InvalidLambdaResponseException(_inner) => _inner.fmt(f),
400 Self::InvalidParameterException(_inner) => _inner.fmt(f),
401 Self::NotAuthorizedException(_inner) => _inner.fmt(f),
402 Self::RefreshTokenReuseException(_inner) => _inner.fmt(f),
403 Self::ResourceNotFoundException(_inner) => _inner.fmt(f),
404 Self::TooManyRequestsException(_inner) => _inner.fmt(f),
405 Self::UnexpectedLambdaException(_inner) => _inner.fmt(f),
406 Self::UserLambdaValidationException(_inner) => _inner.fmt(f),
407 Self::UserNotFoundException(_inner) => _inner.fmt(f),
408 Self::Unhandled(_inner) => {
409 if let ::std::option::Option::Some(code) = ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self) {
410 write!(f, "unhandled error ({code})")
411 } else {
412 f.write_str("unhandled error")
413 }
414 }
415 }
416 }
417}
418impl ::aws_smithy_types::retry::ProvideErrorKind for GetTokensFromRefreshTokenError {
419 fn code(&self) -> ::std::option::Option<&str> {
420 ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self)
421 }
422 fn retryable_error_kind(&self) -> ::std::option::Option<::aws_smithy_types::retry::ErrorKind> {
423 ::std::option::Option::None
424 }
425}
426impl ::aws_smithy_types::error::metadata::ProvideErrorMetadata for GetTokensFromRefreshTokenError {
427 fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
428 match self {
429 Self::ForbiddenException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
430 Self::InternalErrorException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
431 Self::InvalidLambdaResponseException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
432 Self::InvalidParameterException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
433 Self::NotAuthorizedException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
434 Self::RefreshTokenReuseException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
435 Self::ResourceNotFoundException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
436 Self::TooManyRequestsException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
437 Self::UnexpectedLambdaException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
438 Self::UserLambdaValidationException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
439 Self::UserNotFoundException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
440 Self::Unhandled(_inner) => &_inner.meta,
441 }
442 }
443}
444impl ::aws_smithy_runtime_api::client::result::CreateUnhandledError for GetTokensFromRefreshTokenError {
445 fn create_unhandled_error(
446 source: ::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>,
447 meta: ::std::option::Option<::aws_smithy_types::error::ErrorMetadata>,
448 ) -> Self {
449 Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
450 source,
451 meta: meta.unwrap_or_default(),
452 })
453 }
454}
455impl ::aws_types::request_id::RequestId for crate::operation::get_tokens_from_refresh_token::GetTokensFromRefreshTokenError {
456 fn request_id(&self) -> Option<&str> {
457 self.meta().request_id()
458 }
459}
460
461pub use crate::operation::get_tokens_from_refresh_token::_get_tokens_from_refresh_token_output::GetTokensFromRefreshTokenOutput;
462
463pub use crate::operation::get_tokens_from_refresh_token::_get_tokens_from_refresh_token_input::GetTokensFromRefreshTokenInput;
464
465mod _get_tokens_from_refresh_token_input;
466
467mod _get_tokens_from_refresh_token_output;
468
469pub mod builders;