Generate: move generation_*.py src files into generation/*.py (#20096)

* move generation_*.py src files into generation/*.py

* populate generation.__init__ with lazy loading

* move imports and references from generation.xxx.object to generation.object

docs/source/de/pipeline_tutorial.mdx

@@ -56,7 +56,7 @@ Wenn Sie mehr als eine Eingabe haben, übergeben Sie die Eingabe als Liste:
 ... )  # doctest: +SKIP
 ```
 
-Alle zusätzlichen Parameter für Ihre Aufgabe können auch in die [`pipeline`] aufgenommen werden. Die Aufgabe `Text-Generierung` hat eine [`~generation_utils.GenerationMixin.generate`]-Methode mit mehreren Parametern zur Steuerung der Ausgabe. Wenn Sie zum Beispiel mehr als eine Ausgabe erzeugen wollen, setzen Sie den Parameter `num_return_sequences`:
+Alle zusätzlichen Parameter für Ihre Aufgabe können auch in die [`pipeline`] aufgenommen werden. Die Aufgabe `Text-Generierung` hat eine [`~generation.GenerationMixin.generate`]-Methode mit mehreren Parametern zur Steuerung der Ausgabe. Wenn Sie zum Beispiel mehr als eine Ausgabe erzeugen wollen, setzen Sie den Parameter `num_return_sequences`:
 
 ```py
 >>> generator(

docs/source/en/internal/generation_utils.mdx

@@ -12,22 +12,22 @@ specific language governing permissions and limitations under the License.
 
 # Utilities for Generation
 
-This page lists all the utility functions used by [`~generation_utils.GenerationMixin.generate`],
-[`~generation_utils.GenerationMixin.greedy_search`],
-[`~generation_utils.GenerationMixin.contrastive_search`],
-[`~generation_utils.GenerationMixin.sample`],
-[`~generation_utils.GenerationMixin.beam_search`],
-[`~generation_utils.GenerationMixin.beam_sample`],
-[`~generation_utils.GenerationMixin.group_beam_search`], and
-[`~generation_utils.GenerationMixin.constrained_beam_search`].
+This page lists all the utility functions used by [`~generation.GenerationMixin.generate`],
+[`~generation.GenerationMixin.greedy_search`],
+[`~generation.GenerationMixin.contrastive_search`],
+[`~generation.GenerationMixin.sample`],
+[`~generation.GenerationMixin.beam_search`],
+[`~generation.GenerationMixin.beam_sample`],
+[`~generation.GenerationMixin.group_beam_search`], and
+[`~generation.GenerationMixin.constrained_beam_search`].
 
 Most of those are only useful if you are studying the code of the generate methods in the library.
 
 ## Generate Outputs
 
-The output of [`~generation_utils.GenerationMixin.generate`] is an instance of a subclass of
+The output of [`~generation.GenerationMixin.generate`] is an instance of a subclass of
 [`~utils.ModelOutput`]. This output is a data structure containing all the information returned
-by [`~generation_utils.GenerationMixin.generate`], but that can also be used as tuple or dictionary.
+by [`~generation.GenerationMixin.generate`], but that can also be used as tuple or dictionary.
 
 Here's an example:
 
@@ -41,7 +41,7 @@ inputs = tokenizer("Hello, my dog is cute and ", return_tensors="pt")
 generation_output = model.generate(**inputs, return_dict_in_generate=True, output_scores=True)
 ```
 
-The `generation_output` object is a [`~generation_utils.GreedySearchDecoderOnlyOutput`], as we can
+The `generation_output` object is a [`~generation.GreedySearchDecoderOnlyOutput`], as we can
 see in the documentation of that class below, it means it has the following attributes:
 
 - `sequences`: the generated sequences of tokens
@@ -73,31 +73,31 @@ We document here all output types.
 
 ### GreedySearchOutput
 
-[[autodoc]] generation_utils.GreedySearchDecoderOnlyOutput
+[[autodoc]] generation.GreedySearchDecoderOnlyOutput
 
-[[autodoc]] generation_utils.GreedySearchEncoderDecoderOutput
+[[autodoc]] generation.GreedySearchEncoderDecoderOutput
 
-[[autodoc]] generation_flax_utils.FlaxGreedySearchOutput
+[[autodoc]] generation.FlaxGreedySearchOutput
 
 ### SampleOutput
 
-[[autodoc]] generation_utils.SampleDecoderOnlyOutput
+[[autodoc]] generation.SampleDecoderOnlyOutput
 
-[[autodoc]] generation_utils.SampleEncoderDecoderOutput
+[[autodoc]] generation.SampleEncoderDecoderOutput
 
-[[autodoc]] generation_flax_utils.FlaxSampleOutput
+[[autodoc]] generation.FlaxSampleOutput
 
 ### BeamSearchOutput
 
-[[autodoc]] generation_utils.BeamSearchDecoderOnlyOutput
+[[autodoc]] generation.BeamSearchDecoderOnlyOutput
 
-[[autodoc]] generation_utils.BeamSearchEncoderDecoderOutput
+[[autodoc]] generation.BeamSearchEncoderDecoderOutput
 
 ### BeamSampleOutput
 
-[[autodoc]] generation_utils.BeamSampleDecoderOnlyOutput
+[[autodoc]] generation.BeamSampleDecoderOnlyOutput
 
-[[autodoc]] generation_utils.BeamSampleEncoderDecoderOutput
+[[autodoc]] generation.BeamSampleEncoderDecoderOutput
 
 ## LogitsProcessor
 

docs/source/en/main_classes/model.mdx

@@ -25,9 +25,9 @@ are common among all the models to:
 
 The other methods that are common to each model are defined in [`~modeling_utils.ModuleUtilsMixin`]
 (for the PyTorch models) and [`~modeling_tf_utils.TFModuleUtilsMixin`] (for the TensorFlow models) or
-for text generation, [`~generation_utils.GenerationMixin`] (for the PyTorch models),
-[`~generation_tf_utils.TFGenerationMixin`] (for the TensorFlow models) and
-[`~generation_flax_utils.FlaxGenerationMixin`] (for the Flax/JAX models).
+for text generation, [`~generation.GenerationMixin`] (for the PyTorch models),
+[`~generation.TFGenerationMixin`] (for the TensorFlow models) and
+[`~generation.FlaxGenerationMixin`] (for the Flax/JAX models).
 
 
 ## PreTrainedModel

docs/source/en/main_classes/text_generation.mdx

@@ -14,13 +14,13 @@ specific language governing permissions and limitations under the License.
 
 Each framework has a generate method for auto-regressive text generation implemented in their respective `GenerationMixin` class:
 
-- PyTorch [`~generation_utils.GenerationMixin.generate`] is implemented in [`~generation_utils.GenerationMixin`].
-- TensorFlow [`~generation_tf_utils.TFGenerationMixin.generate`] is implemented in [`~generation_tf_utils.TFGenerationMixin`].
-- Flax/JAX [`~generation_flax_utils.FlaxGenerationMixin.generate`] is implemented in [`~generation_flax_utils.FlaxGenerationMixin`].
+- PyTorch [`~generation.GenerationMixin.generate`] is implemented in [`~generation.GenerationMixin`].
+- TensorFlow [`~generation.TFGenerationMixin.generate`] is implemented in [`~generation.TFGenerationMixin`].
+- Flax/JAX [`~generation.FlaxGenerationMixin.generate`] is implemented in [`~generation.FlaxGenerationMixin`].
 
 ## GenerationMixin
 
-[[autodoc]] generation_utils.GenerationMixin
+[[autodoc]] generation.GenerationMixin
 	- generate
 	- greedy_search
 	- sample
@@ -32,10 +32,10 @@ Each framework has a generate method for auto-regressive text generation impleme
 
 ## TFGenerationMixin
 
-[[autodoc]] generation_tf_utils.TFGenerationMixin
+[[autodoc]] generation.TFGenerationMixin
 	- generate
 
 ## FlaxGenerationMixin
 
-[[autodoc]] generation_flax_utils.FlaxGenerationMixin
+[[autodoc]] generation.FlaxGenerationMixin
 	- generate

docs/source/en/model_doc/bart.mdx

@@ -58,7 +58,7 @@ This model was contributed by [sshleifer](https://huggingface.co/sshleifer). The
 - Model predictions are intended to be identical to the original implementation when
   `forced_bos_token_id=0`. This only works, however, if the string you pass to
   [`fairseq.encode`] starts with a space.
-- [`~generation_utils.GenerationMixin.generate`] should be used for conditional generation tasks like
+- [`~generation.GenerationMixin.generate`] should be used for conditional generation tasks like
   summarization, see the example in that docstrings.
 - Models that load the *facebook/bart-large-cnn* weights will not have a `mask_token_id`, or be able to perform
   mask-filling tasks.

docs/source/en/model_doc/donut.mdx

@@ -40,7 +40,7 @@ Tips:
 ## Inference
 
 Donut's [`VisionEncoderDecoder`] model accepts images as input and makes use of
-[`~generation_utils.GenerationMixin.generate`] to autoregressively generate text given the input image.
+[`~generation.GenerationMixin.generate`] to autoregressively generate text given the input image.
 
 The [`DonutFeatureExtractor`] class is responsible for preprocessing the input image and
 [`XLMRobertaTokenizer`/`XLMRobertaTokenizerFast`] decodes the generated target tokens to the target string. The

docs/source/en/model_doc/gptj.mdx

@@ -53,7 +53,7 @@ Tips:
 
 ### Generation
 
-The [`~generation_utils.GenerationMixin.generate`] method can be used to generate text using GPT-J
+The [`~generation.GenerationMixin.generate`] method can be used to generate text using GPT-J
 model.
 
 ```python

docs/source/en/model_doc/speech_to_text_2.mdx

@@ -38,7 +38,7 @@ Tips:
 ## Inference
 
 Speech2Text2's [`SpeechEncoderDecoderModel`] model accepts raw waveform input values from speech and
-makes use of [`~generation_utils.GenerationMixin.generate`] to translate the input speech
+makes use of [`~generation.GenerationMixin.generate`] to translate the input speech
 autoregressively to the target language.
 
 The [`Wav2Vec2FeatureExtractor`] class is responsible for preprocessing the input speech and

docs/source/en/model_doc/t5.mdx

@@ -225,7 +225,7 @@ batch) leads to very slow training on TPU.
 
 ## Inference
 
-At inference time, it is recommended to use [`~generation_utils.GenerationMixin.generate`]. This
+At inference time, it is recommended to use [`~generation.GenerationMixin.generate`]. This
 method takes care of encoding the input and feeding the encoded hidden states via cross-attention layers to the decoder
 and auto-regressively generates the decoder output. Check out [this blog post](https://huggingface.co/blog/how-to-generate) to know all the details about generating text with Transformers.
 There's also [this blog post](https://huggingface.co/blog/encoder-decoder#encoder-decoder) which explains how
@@ -244,7 +244,7 @@ Das Haus ist wunderbar.
 ```
 
 Note that T5 uses the `pad_token_id` as the `decoder_start_token_id`, so when doing generation without using
-[`~generation_utils.GenerationMixin.generate`], make sure you start it with the `pad_token_id`.
+[`~generation.GenerationMixin.generate`], make sure you start it with the `pad_token_id`.
 
 The example above only shows a single example. You can also do batched inference, like so:
 

docs/source/en/model_doc/trocr.mdx

@@ -53,7 +53,7 @@ Tips:
 ## Inference
 
 TrOCR's [`VisionEncoderDecoder`] model accepts images as input and makes use of
-[`~generation_utils.GenerationMixin.generate`] to autoregressively generate text given the input image.
+[`~generation.GenerationMixin.generate`] to autoregressively generate text given the input image.
 
 The [`ViTFeatureExtractor`/`DeiTFeatureExtractor`] class is responsible for preprocessing the input image and
 [`RobertaTokenizer`/`XLMRobertaTokenizer`] decodes the generated target tokens to the target string. The

docs/source/en/model_doc/whisper.mdx

@@ -24,7 +24,7 @@ The abstract from the paper is the following:
 Tips:
 
 - The model usually performs well without requiring any finetuning.
-- The architecture follows a classic encoder-decoder architecture, which means that it relies on the [`~generation_utils.GenerationMixin.generate`] function for inference.
+- The architecture follows a classic encoder-decoder architecture, which means that it relies on the [`~generation.GenerationMixin.generate`] function for inference.
 - Inference is currently only implemented for short-form i.e. audio is pre-segmented into <=30s segments. Long-form (including timestamps) will be implemented in a future release.
 - One can use [`WhisperProcessor`] to prepare audio for the model, and decode the predicted ID's back into text.
 

docs/source/en/pipeline_tutorial.mdx

@@ -56,7 +56,7 @@ If you have more than one input, pass your input as a list:
 ... )  # doctest: +SKIP
 ```
 
-Any additional parameters for your task can also be included in the [`pipeline`]. The `text-generation` task has a [`~generation_utils.GenerationMixin.generate`] method with several parameters for controlling the output. For example, if you want to generate more than one output, set the `num_return_sequences` parameter:
+Any additional parameters for your task can also be included in the [`pipeline`]. The `text-generation` task has a [`~generation.GenerationMixin.generate`] method with several parameters for controlling the output. For example, if you want to generate more than one output, set the `num_return_sequences` parameter:
 
 ```py
 >>> generator(

docs/source/en/task_summary.mdx

@@ -544,7 +544,7 @@ Hugging Face is based in DUMBO, New York City, and ...
 This outputs a (hopefully) coherent next token following the original sequence, which in our case is the word *is* or
 *features*.
 
-In the next section, we show how [`generation_utils.GenerationMixin.generate`] can be used to
+In the next section, we show how [`generation.GenerationMixin.generate`] can be used to
 generate multiple tokens up to a specified length instead of one token at a time.
 
 ### Text Generation

docs/source/es/pipeline_tutorial.mdx

@@ -54,7 +54,7 @@ Si tienes más de una entrada, pásala como una lista:
 ... )
 ```
 
-Cualquier parámetro adicional para tu tarea también se puede incluir en el [`pipeline`]. La tarea `text-generation` tiene un método [`~generation_utils.GenerationMixin.generate`] con varios parámetros para controlar la salida. Por ejemplo, si deseas generar más de una salida, defínelo en el parámetro `num_return_sequences`:
+Cualquier parámetro adicional para tu tarea también se puede incluir en el [`pipeline`]. La tarea `text-generation` tiene un método [`~generation.GenerationMixin.generate`] con varios parámetros para controlar la salida. Por ejemplo, si deseas generar más de una salida, defínelo en el parámetro `num_return_sequences`:
 
 ```py
 >>> generator(

docs/source/it/pipeline_tutorial.mdx

@@ -56,7 +56,7 @@ Se hai più di un input, inseriscilo in una lista:
 ... )  # doctest: +SKIP
 ```
 
-Qualsiasi parametro addizionale per il tuo compito può essere incluso nella [`pipeline`]. La mansione `text-generation` ha un metodo [`~generation_utils.GenerationMixin.generate`] con diversi parametri per controllare l'output. Ad esempio, se desideri generare più di un output, utilizza il parametro `num_return_sequences`:
+Qualsiasi parametro addizionale per il tuo compito può essere incluso nella [`pipeline`]. La mansione `text-generation` ha un metodo [`~generation.GenerationMixin.generate`] con diversi parametri per controllare l'output. Ad esempio, se desideri generare più di un output, utilizza il parametro `num_return_sequences`:
 
 ```py
 >>> generator(

docs/source/pt/pipeline_tutorial.mdx

@@ -61,7 +61,7 @@ Se tiver mais de uma entrada, passe-a como uma lista:
 ```
 
 Qualquer parâmetro adicional para a sua tarefa também pode ser incluído no [`pipeline`]. A tarefa `text-generation` tem um método
-[`~generation_utils.GenerationMixin.generate`] com vários parâmetros para controlar a saída.
+[`~generation.GenerationMixin.generate`] com vários parâmetros para controlar a saída.
 Por exemplo, se quiser gerar mais de uma saída, defina-a no parâmetro `num_return_sequences`:
 
 ```py

examples/research_projects/onnx/summarization/bart_onnx/generation_onnx.py

@@ -6,7 +6,7 @@ import torch
 import torch.nn.functional as F
 
 from transformers import BartConfig
-from transformers.generation_utils import GenerationMixin
+from transformers.generation import GenerationMixin
 
 
 def _convert_past_list_to_tuple(past_key_values):

src/transformers/__init__.py

@@ -97,6 +97,7 @@ _import_structure = {
     "feature_extraction_sequence_utils": ["SequenceFeatureExtractor"],
     "feature_extraction_utils": ["BatchFeature", "FeatureExtractionMixin"],
     "file_utils": [],
+    "generation": [],
     "hf_argparser": ["HfArgumentParser"],
     "integrations": [
         "is_comet_available",
@@ -821,14 +822,16 @@ else:
         "TextDatasetForNextSentencePrediction",
     ]
     _import_structure["deepspeed"] = []
-    _import_structure["generation_beam_constraints"] = [
+    _import_structure["generation_utils"] = []
+    _import_structure["generation"].extend(
+        [
             "Constraint",
             "ConstraintListState",
             "DisjunctiveConstraint",
             "PhrasalConstraint",
-    ]
-    _import_structure["generation_beam_search"] = ["BeamScorer", "BeamSearchScorer", "ConstrainedBeamSearchScorer"]
-    _import_structure["generation_logits_process"] = [
+            "BeamScorer",
+            "BeamSearchScorer",
+            "ConstrainedBeamSearchScorer",
             "ForcedBOSTokenLogitsProcessor",
             "ForcedEOSTokenLogitsProcessor",
             "HammingDiversityLogitsProcessor",
@@ -845,14 +848,14 @@ else:
             "TopKLogitsWarper",
             "TopPLogitsWarper",
             "TypicalLogitsWarper",
-    ]
-    _import_structure["generation_stopping_criteria"] = [
             "MaxLengthCriteria",
             "MaxTimeCriteria",
             "StoppingCriteria",
             "StoppingCriteriaList",
+            "GenerationMixin",
+            "top_k_top_p_filtering",
         ]
-    _import_structure["generation_utils"] = ["top_k_top_p_filtering"]
+    )
     _import_structure["modeling_outputs"] = []
     _import_structure["modeling_utils"] = ["PreTrainedModel"]
 
@@ -2278,7 +2281,9 @@ else:
     _import_structure["activations_tf"] = []
     _import_structure["benchmark.benchmark_args_tf"] = ["TensorFlowBenchmarkArguments"]
     _import_structure["benchmark.benchmark_tf"] = ["TensorFlowBenchmark"]
-    _import_structure["generation_tf_logits_process"] = [
+    _import_structure["generation_tf_utils"] = []
+    _import_structure["generation"].extend(
+        [
             "TFForcedBOSTokenLogitsProcessor",
             "TFForcedEOSTokenLogitsProcessor",
             "TFLogitsProcessor",
@@ -2291,8 +2296,10 @@ else:
             "TFTemperatureLogitsWarper",
             "TFTopKLogitsWarper",
             "TFTopPLogitsWarper",
+            "TFGenerationMixin",
+            "tf_top_k_top_p_filtering",
         ]
-    _import_structure["generation_tf_utils"] = ["tf_top_k_top_p_filtering"]
+    )
     _import_structure["keras_callbacks"] = ["KerasMetricCallback", "PushToHubCallback"]
     _import_structure["modeling_tf_outputs"] = []
     _import_structure["modeling_tf_utils"] = [
@@ -2915,7 +2922,9 @@ except OptionalDependencyNotAvailable:
         name for name in dir(dummy_flax_objects) if not name.startswith("_")
     ]
 else:
-    _import_structure["generation_flax_logits_process"] = [
+    _import_structure["generation_flax_utils"] = []
+    _import_structure["generation"].extend(
+        [
             "FlaxForcedBOSTokenLogitsProcessor",
             "FlaxForcedEOSTokenLogitsProcessor",
             "FlaxLogitsProcessor",
@@ -2925,8 +2934,9 @@ else:
             "FlaxTemperatureLogitsWarper",
             "FlaxTopKLogitsWarper",
             "FlaxTopPLogitsWarper",
+            "FlaxGenerationMixin",
         ]
-    _import_structure["generation_flax_utils"] = []
+    )
     _import_structure["modeling_flax_outputs"] = []
     _import_structure["modeling_flax_utils"] = ["FlaxPreTrainedModel"]
     _import_structure["models.albert"].extend(
@@ -3834,38 +3844,37 @@ if TYPE_CHECKING:
             TextDataset,
             TextDatasetForNextSentencePrediction,
         )
-        from .generation_beam_constraints import (
+        from .generation import (
+            BeamScorer,
+            BeamSearchScorer,
+            ConstrainedBeamSearchScorer,
             Constraint,
             ConstraintListState,
             DisjunctiveConstraint,
-            PhrasalConstraint,
-        )
-        from .generation_beam_search import BeamScorer, BeamSearchScorer, ConstrainedBeamSearchScorer
-        from .generation_logits_process import (
             ForcedBOSTokenLogitsProcessor,
             ForcedEOSTokenLogitsProcessor,
+            GenerationMixin,
             HammingDiversityLogitsProcessor,
             InfNanRemoveLogitsProcessor,
             LogitsProcessor,
             LogitsProcessorList,
             LogitsWarper,
+            MaxLengthCriteria,
+            MaxTimeCriteria,
             MinLengthLogitsProcessor,
             NoBadWordsLogitsProcessor,
             NoRepeatNGramLogitsProcessor,
+            PhrasalConstraint,
             PrefixConstrainedLogitsProcessor,
             RepetitionPenaltyLogitsProcessor,
+            StoppingCriteria,
+            StoppingCriteriaList,
             TemperatureLogitsWarper,
             TopKLogitsWarper,
             TopPLogitsWarper,
             TypicalLogitsWarper,
+            top_k_top_p_filtering,
         )
-        from .generation_stopping_criteria import (
-            MaxLengthCriteria,
-            MaxTimeCriteria,
-            StoppingCriteria,
-            StoppingCriteriaList,
-        )
-        from .generation_utils import top_k_top_p_filtering
         from .modeling_utils import PreTrainedModel
 
         # PyTorch model imports
@@ -5037,9 +5046,10 @@ if TYPE_CHECKING:
 
         # Benchmarks
         from .benchmark.benchmark_tf import TensorFlowBenchmark
-        from .generation_tf_logits_process import (
+        from .generation import (
             TFForcedBOSTokenLogitsProcessor,
             TFForcedEOSTokenLogitsProcessor,
+            TFGenerationMixin,
             TFLogitsProcessor,
             TFLogitsProcessorList,
             TFLogitsWarper,
@@ -5050,8 +5060,8 @@ if TYPE_CHECKING:
             TFTemperatureLogitsWarper,
             TFTopKLogitsWarper,
             TFTopPLogitsWarper,
+            tf_top_k_top_p_filtering,
         )
-        from .generation_tf_utils import tf_top_k_top_p_filtering
         from .keras_callbacks import KerasMetricCallback, PushToHubCallback
         from .modeling_tf_layoutlm import (
             TF_LAYOUTLM_PRETRAINED_MODEL_ARCHIVE_LIST,
@@ -5541,9 +5551,10 @@ if TYPE_CHECKING:
         # They will raise an import error if the user tries to instantiate / use them.
         from .utils.dummy_flax_objects import *
     else:
-        from .generation_flax_logits_process import (
+        from .generation import (
             FlaxForcedBOSTokenLogitsProcessor,
             FlaxForcedEOSTokenLogitsProcessor,
+            FlaxGenerationMixin,
             FlaxLogitsProcessor,
             FlaxLogitsProcessorList,
             FlaxLogitsWarper,

src/transformers/generation/__init__.py

+# flake8: noqa
+# There's no way to ignore "F401 '...' imported but unused" warnings in this
+# module, but to preserve other warnings. So, don't check this module at all.
+
+# Copyright 2022 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import TYPE_CHECKING
+
+from ..utils import OptionalDependencyNotAvailable, _LazyModule, is_flax_available, is_tf_available, is_torch_available
+
+
+_import_structure = {}
+
+
+try:
+    if not is_torch_available():
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    pass
+else:
+    _import_structure["beam_constraints"] = [
+        "Constraint",
+        "ConstraintListState",
+        "DisjunctiveConstraint",
+        "PhrasalConstraint",
+    ]
+    _import_structure["beam_search"] = [
+        "BeamHypotheses",
+        "BeamScorer",
+        "BeamSearchScorer",
+        "ConstrainedBeamSearchScorer",
+    ]
+    _import_structure["logits_process"] = [
+        "ForcedBOSTokenLogitsProcessor",
+        "ForcedEOSTokenLogitsProcessor",
+        "HammingDiversityLogitsProcessor",
+        "InfNanRemoveLogitsProcessor",
+        "LogitsProcessor",
+        "LogitsProcessorList",
+        "LogitsWarper",
+        "MinLengthLogitsProcessor",
+        "NoBadWordsLogitsProcessor",
+        "NoRepeatNGramLogitsProcessor",
+        "PrefixConstrainedLogitsProcessor",
+        "RepetitionPenaltyLogitsProcessor",
+        "TemperatureLogitsWarper",
+        "TopKLogitsWarper",
+        "TopPLogitsWarper",
+        "TypicalLogitsWarper",
+        "EncoderNoRepeatNGramLogitsProcessor",
+        "ExponentialDecayLengthPenalty",
+        "LogitNormalization",
+    ]
+    _import_structure["stopping_criteria"] = [
+        "MaxNewTokensCriteria",
+        "MaxLengthCriteria",
+        "MaxTimeCriteria",
+        "StoppingCriteria",
+        "StoppingCriteriaList",
+        "validate_stopping_criteria",
+    ]
+    _import_structure["utils"] = [
+        "GenerationMixin",
+        "top_k_top_p_filtering",
+        "GreedySearchEncoderDecoderOutput",
+        "GreedySearchDecoderOnlyOutput",
+        "SampleEncoderDecoderOutput",
+        "SampleDecoderOnlyOutput",
+        "BeamSearchEncoderDecoderOutput",
+        "BeamSearchDecoderOnlyOutput",
+        "BeamSampleEncoderDecoderOutput",
+        "BeamSampleDecoderOnlyOutput",
+        "ContrastiveSearchEncoderDecoderOutput",
+        "ContrastiveSearchDecoderOnlyOutput",
+    ]
+
+try:
+    if not is_tf_available():
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    pass
+else:
+    _import_structure["tf_logits_process"] = [
+        "TFForcedBOSTokenLogitsProcessor",
+        "TFForcedEOSTokenLogitsProcessor",
+        "TFLogitsProcessor",
+        "TFLogitsProcessorList",
+        "TFLogitsWarper",
+        "TFMinLengthLogitsProcessor",
+        "TFNoBadWordsLogitsProcessor",
+        "TFNoRepeatNGramLogitsProcessor",
+        "TFRepetitionPenaltyLogitsProcessor",
+        "TFTemperatureLogitsWarper",
+        "TFTopKLogitsWarper",
+        "TFTopPLogitsWarper",
+        "TFForceTokensLogitsProcessor",
+        "TFSuppressTokensAtBeginLogitsProcessor",
+        "TFSuppressTokensLogitsProcessor",
+    ]
+    _import_structure["tf_utils"] = [
+        "TFGenerationMixin",
+        "tf_top_k_top_p_filtering",
+        "TFGreedySearchDecoderOnlyOutput",
+        "TFGreedySearchEncoderDecoderOutput",
+        "TFSampleEncoderDecoderOutput",
+        "TFSampleDecoderOnlyOutput",
+        "TFBeamSearchEncoderDecoderOutput",
+        "TFBeamSearchDecoderOnlyOutput",
+        "TFBeamSampleEncoderDecoderOutput",
+        "TFBeamSampleDecoderOnlyOutput",
+        "TFContrastiveSearchEncoderDecoderOutput",
+        "TFContrastiveSearchDecoderOnlyOutput",
+    ]
+
+try:
+    if not is_flax_available():
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    pass
+else:
+    _import_structure["flax_logits_process"] = [
+        "FlaxForcedBOSTokenLogitsProcessor",
+        "FlaxForcedEOSTokenLogitsProcessor",
+        "FlaxLogitsProcessor",
+        "FlaxLogitsProcessorList",
+        "FlaxLogitsWarper",
+        "FlaxMinLengthLogitsProcessor",
+        "FlaxTemperatureLogitsWarper",
+        "FlaxTopKLogitsWarper",
+        "FlaxTopPLogitsWarper",
+    ]
+    _import_structure["flax_utils"] = [
+        "FlaxGenerationMixin",
+        "FlaxGreedySearchOutput",
+        "FlaxSampleOutput",
+        "FlaxBeamSearchOutput",
+    ]
+
+if TYPE_CHECKING:
+    try:
+        if not is_torch_available():
+            raise OptionalDependencyNotAvailable()
+    except OptionalDependencyNotAvailable:
+        pass
+    else:
+        from .beam_constraints import Constraint, ConstraintListState, DisjunctiveConstraint, PhrasalConstraint
+        from .beam_search import BeamHypotheses, BeamScorer, BeamSearchScorer, ConstrainedBeamSearchScorer
+        from .logits_process import (
+            EncoderNoRepeatNGramLogitsProcessor,
+            ExponentialDecayLengthPenalty,
+            ForcedBOSTokenLogitsProcessor,
+            ForcedEOSTokenLogitsProcessor,
+            HammingDiversityLogitsProcessor,
+            InfNanRemoveLogitsProcessor,
+            LogitNormalization,
+            LogitsProcessor,
+            LogitsProcessorList,
+            LogitsWarper,
+            MinLengthLogitsProcessor,
+            NoBadWordsLogitsProcessor,
+            NoRepeatNGramLogitsProcessor,
+            PrefixConstrainedLogitsProcessor,
+            RepetitionPenaltyLogitsProcessor,
+            TemperatureLogitsWarper,
+            TopKLogitsWarper,
+            TopPLogitsWarper,
+            TypicalLogitsWarper,
+        )
+        from .stopping_criteria import (
+            MaxLengthCriteria,
+            MaxNewTokensCriteria,
+            MaxTimeCriteria,
+            StoppingCriteria,
+            StoppingCriteriaList,
+            validate_stopping_criteria,
+        )
+        from .utils import (
+            BeamSampleDecoderOnlyOutput,
+            BeamSampleEncoderDecoderOutput,
+            BeamSearchDecoderOnlyOutput,
+            BeamSearchEncoderDecoderOutput,
+            ContrastiveSearchDecoderOnlyOutput,
+            ContrastiveSearchEncoderDecoderOutput,
+            GenerationMixin,
+            GreedySearchDecoderOnlyOutput,
+            GreedySearchEncoderDecoderOutput,
+            SampleDecoderOnlyOutput,
+            SampleEncoderDecoderOutput,
+            top_k_top_p_filtering,
+        )
+
+    try:
+        if not is_tf_available():
+            raise OptionalDependencyNotAvailable()
+    except OptionalDependencyNotAvailable:
+        pass
+    else:
+        from .tf_logits_process import (
+            TFForcedBOSTokenLogitsProcessor,
+            TFForcedEOSTokenLogitsProcessor,
+            TFForceTokensLogitsProcessor,
+            TFLogitsProcessor,
+            TFLogitsProcessorList,
+            TFLogitsWarper,
+            TFMinLengthLogitsProcessor,
+            TFNoBadWordsLogitsProcessor,
+            TFNoRepeatNGramLogitsProcessor,
+            TFRepetitionPenaltyLogitsProcessor,
+            TFSuppressTokensAtBeginLogitsProcessor,
+            TFSuppressTokensLogitsProcessor,
+            TFTemperatureLogitsWarper,
+            TFTopKLogitsWarper,
+            TFTopPLogitsWarper,
+        )
+        from .tf_utils import (
+            TFBeamSampleDecoderOnlyOutput,
+            TFBeamSampleEncoderDecoderOutput,
+            TFBeamSearchDecoderOnlyOutput,
+            TFBeamSearchEncoderDecoderOutput,
+            TFContrastiveSearchDecoderOnlyOutput,
+            TFContrastiveSearchEncoderDecoderOutput,
+            TFGenerationMixin,
+            TFGreedySearchDecoderOnlyOutput,
+            TFGreedySearchEncoderDecoderOutput,
+            TFSampleDecoderOnlyOutput,
+            TFSampleEncoderDecoderOutput,
+            tf_top_k_top_p_filtering,
+        )
+
+    try:
+        if not is_flax_available():
+            raise OptionalDependencyNotAvailable()
+    except OptionalDependencyNotAvailable:
+        pass
+    else:
+        from .flax_logits_process import (
+            FlaxForcedBOSTokenLogitsProcessor,
+            FlaxForcedEOSTokenLogitsProcessor,
+            FlaxLogitsProcessor,
+            FlaxLogitsProcessorList,
+            FlaxLogitsWarper,
+            FlaxMinLengthLogitsProcessor,
+            FlaxTemperatureLogitsWarper,
+            FlaxTopKLogitsWarper,
+            FlaxTopPLogitsWarper,
+        )
+        from .flax_utils import FlaxBeamSearchOutput, FlaxGenerationMixin, FlaxGreedySearchOutput, FlaxSampleOutput
+else:
+    import sys
+
+    sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)