Deprecate vocab_size in other two VLMs (#31681)

* deprrecate `vocab_size` in other two VLMs

* Update src/transformers/models/fuyu/configuration_fuyu.py

Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>

* depracate until 4.44

---------

Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>

src/transformers/modeling_utils.py

@@ -1942,8 +1942,8 @@ def resize_token_embeddings(
         # Update base model and current model config
         if hasattr(self.config, "text_config"):
             self.config.text_config.vocab_size = model_embeds.weight.shape[0]
-        # TODO: to be removed after v4.42, config.vocab_size is deprecated for models that have a config.text_config
-        self.config.vocab_size = model_embeds.weight.shape[0]
+        else:
+            self.config.vocab_size = model_embeds.weight.shape[0]
         self.vocab_size = model_embeds.weight.shape[0]
 
         # Tie weights again if needed

src/transformers/models/fuyu/configuration_fuyu.py

@@ -14,6 +14,8 @@
 # limitations under the License.
 """Fuyu model configuration"""
 
+import warnings
+
 from ...configuration_utils import PretrainedConfig
 from ...utils import logging
 from ..auto import CONFIG_MAPPING
@@ -157,7 +159,7 @@ def __init__(
         text_model_type = text_config["model_type"] if "model_type" in text_config else "persimmon"
         self.text_config = CONFIG_MAPPING[text_model_type](**text_config)
 
-        self.vocab_size = vocab_size
+        self._vocab_size = vocab_size
         self.max_position_embeddings = max_position_embeddings
         self.image_size = image_size
         self.patch_size = patch_size
@@ -206,3 +208,20 @@ def _rope_scaling_validation(self):
             )
         if rope_scaling_factor is None or not isinstance(rope_scaling_factor, float) or rope_scaling_factor <= 1.0:
             raise ValueError(f"`rope_scaling`'s factor field must be a float > 1, got {rope_scaling_factor}")
+
+    @property
+    def vocab_size(self):
+        warnings.warn(
+            "The `vocab_size` attribute is deprecated and will be removed in v4.44, Please use `text_config.vocab_size` instead.",
+            FutureWarning,
+        )
+        return self._vocab_size
+
+    @vocab_size.setter
+    def vocab_size(self, value):
+        self._vocab_size = value
+
+    def to_dict(self):
+        output = super().to_dict()
+        output.pop("_vocab_size", None)
+        return output

src/transformers/models/fuyu/modeling_fuyu.py

@@ -149,7 +149,7 @@ class FuyuForCausalLM(FuyuPreTrainedModel):
     def __init__(self, config: FuyuConfig):
         super().__init__(config)
         self.padding_idx = config.pad_token_id
-        self.vocab_size = config.vocab_size
+        self.vocab_size = config.text_config.vocab_size
         self.language_model = AutoModelForCausalLM.from_config(
             config.text_config, attn_implementation=config._attn_implementation
         )
@@ -168,6 +168,15 @@ def get_input_embeddings(self):
     def set_input_embeddings(self, value):
         self.language_model.set_input_embeddings(value)
 
+    def resize_token_embeddings(self, new_num_tokens: Optional[int] = None, pad_to_multiple_of=None) -> nn.Embedding:
+        # TODO: config.vocab_size is deprecated and will be removed in v4.43.
+        # `resize_token_embeddings` should work from `modeling_utils.py``
+        model_embeds = self.language_model.resize_token_embeddings(new_num_tokens, pad_to_multiple_of)
+        self.config.text_config.vocab_size = model_embeds.num_embeddings
+        self.config.vocab_size = model_embeds.num_embeddings
+        self.vocab_size = model_embeds.num_embeddings
+        return model_embeds
+
     def gather_continuous_embeddings(
         self,
         word_embeddings: torch.Tensor,

src/transformers/models/paligemma/configuration_paligemma.py

@@ -13,6 +13,8 @@
 # limitations under the License.
 """PaliGemmamodel configuration"""
 
+import warnings
+
 from ...configuration_utils import PretrainedConfig
 from ...utils import logging
 from ..auto import CONFIG_MAPPING
@@ -86,7 +88,7 @@ def __init__(
     ):
         self.ignore_index = ignore_index
         self.image_token_index = image_token_index
-        self.vocab_size = vocab_size
+        self._vocab_size = vocab_size
         self.projection_dim = projection_dim
         self.hidden_size = hidden_size
         self.vision_config = vision_config
@@ -124,7 +126,25 @@ def __init__(
                 num_attention_heads=8,
                 num_key_value_heads=1,
                 is_encoder_decoder=False,
+                vocab_size=vocab_size,
             )
         self.text_config.num_image_tokens = (self.vision_config.image_size // self.vision_config.patch_size) ** 2
         self.vision_config.projection_dim = projection_dim
         super().__init__(**kwargs)
+
+    @property
+    def vocab_size(self):
+        warnings.warn(
+            "The `vocab_size` attribute is deprecated and will be removed in v4.44, Please use `text_config.vocab_size` instead.",
+            FutureWarning,
+        )
+        return self._vocab_size
+
+    @vocab_size.setter
+    def vocab_size(self, value):
+        self._vocab_size = value
+
+    def to_dict(self):
+        output = super().to_dict()
+        output.pop("_vocab_size", None)
+        return output

src/transformers/models/paligemma/modeling_paligemma.py

@@ -233,7 +233,7 @@ def __init__(self, config: PaliGemmaConfig):
         super().__init__(config)
         self.vision_tower = AutoModel.from_config(config=config.vision_config)
         self.multi_modal_projector = PaliGemmaMultiModalProjector(config)
-        self.vocab_size = config.vocab_size
+        self.vocab_size = config.text_config.vocab_size
         self._attn_implementation = config._attn_implementation
 
         language_model = AutoModelForCausalLM.from_config(
@@ -276,8 +276,9 @@ def tie_weights(self):
         return self.language_model.tie_weights()
 
     def resize_token_embeddings(self, new_num_tokens: Optional[int] = None, pad_to_multiple_of=None) -> nn.Embedding:
+        # TODO: config.vocab_size is deprecated and will be removed in v4.43.
+        # `resize_token_embeddings` should work from `modeling_utils.py``
         model_embeds = self.language_model.resize_token_embeddings(new_num_tokens, pad_to_multiple_of)
-        # update vocab size
         self.config.text_config.vocab_size = model_embeds.num_embeddings
         self.config.vocab_size = model_embeds.num_embeddings
         self.vocab_size = model_embeds.num_embeddings