# coding=utf-8
# Copyright 2022 WeChatAI and The HuggingFace Inc. 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.
"""RoCBert model configuration"""

from ...configuration_utils import PretrainedConfig
from ...utils import logging


logger = logging.get_logger(__name__)


class RoCBertConfig(PretrainedConfig):
    r"""
    This is the configuration class to store the configuration of a [`RoCBertModel`]. It is used to instantiate a
    RoCBert model according to the specified arguments, defining the model architecture. Instantiating a configuration
    with the defaults will yield a similar configuration to that of the RoCBert
    [weiweishi/roc-bert-base-zh](https://huggingface.co/weiweishi/roc-bert-base-zh) architecture.

    Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
    documentation from [`PretrainedConfig`] for more information.


    Args:
        vocab_size (`int`, *optional*, defaults to 30522):
            Vocabulary size of the RoCBert model. Defines the number of different tokens that can be represented by the
            `inputs_ids` passed when calling [`RoCBertModel`].
        hidden_size (`int`, *optional*, defaults to 768):
            Dimension of the encoder layers and the pooler layer.
        num_hidden_layers (`int`, *optional*, defaults to 12):
            Number of hidden layers in the Transformer encoder.
        num_attention_heads (`int`, *optional*, defaults to 12):
            Number of attention heads for each attention layer in the Transformer encoder.
        intermediate_size (`int`, *optional*, defaults to 3072):
            Dimension of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
        hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`):
            The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
            `"relu"`, `"selu"` and `"gelu_new"` are supported.
        hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
            The dropout probability for all fully connected layers in the embeddings, encoder, and pooler.
        attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
            The dropout ratio for the attention probabilities.
        max_position_embeddings (`int`, *optional*, defaults to 512):
            The maximum sequence length that this model might ever be used with. Typically set this to something large
            just in case (e.g., 512 or 1024 or 2048).
        type_vocab_size (`int`, *optional*, defaults to 2):
            The vocabulary size of the `token_type_ids` passed when calling [`RoCBertModel`].
        initializer_range (`float`, *optional*, defaults to 0.02):
            The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
        layer_norm_eps (`float`, *optional*, defaults to 1e-12):
            The epsilon used by the layer normalization layers.
        is_decoder (`bool`, *optional*, defaults to `False`):
            Whether the model is used as a decoder or not. If `False`, the model is used as an encoder.
        use_cache (`bool`, *optional*, defaults to `True`):
            Whether or not the model should return the last key/values attentions (not used by all models). Only
            relevant if `config.is_decoder=True`.
        position_embedding_type (`str`, *optional*, defaults to `"absolute"`):
            Type of position embedding. Choose one of `"absolute"`, `"relative_key"`, `"relative_key_query"`. For
            positional embeddings use `"absolute"`. For more information on `"relative_key"`, please refer to
            [Self-Attention with Relative Position Representations (Shaw et al.)](https://arxiv.org/abs/1803.02155).
            For more information on `"relative_key_query"`, please refer to *Method 4* in [Improve Transformer Models
            with Better Relative Position Embeddings (Huang et al.)](https://arxiv.org/abs/2009.13658).
        classifier_dropout (`float`, *optional*):
            The dropout ratio for the classification head.
        enable_pronunciation (`bool`, *optional*, defaults to `True`):
            Whether or not the model use pronunciation embed when training.
        enable_shape (`bool`, *optional*, defaults to `True`):
            Whether or not the model use shape embed when training.
        pronunciation_embed_dim (`int`, *optional*, defaults to 768):
            Dimension of the pronunciation_embed.
        pronunciation_vocab_size (`int`, *optional*, defaults to 910):
            Pronunciation Vocabulary size of the RoCBert model. Defines the number of different tokens that can be
            represented by the `input_pronunciation_ids` passed when calling [`RoCBertModel`].
        shape_embed_dim (`int`, *optional*, defaults to 512):
            Dimension of the shape_embed.
        shape_vocab_size (`int`, *optional*, defaults to 24858):
            Shape Vocabulary size of the RoCBert model. Defines the number of different tokens that can be represented
            by the `input_shape_ids` passed when calling [`RoCBertModel`].
        concat_input (`bool`, *optional*, defaults to `True`):
            Defines the way of merging the shape_embed, pronunciation_embed and word_embed, if the value is true,
            output_embed = torch.cat((word_embed, shape_embed, pronunciation_embed), -1), else output_embed =
            (word_embed + shape_embed + pronunciation_embed) / 3
        Example:

    ```python
    >>> from transformers import RoCBertModel, RoCBertConfig

    >>> # Initializing a RoCBert weiweishi/roc-bert-base-zh style configuration
    >>> configuration = RoCBertConfig()

    >>> # Initializing a model from the weiweishi/roc-bert-base-zh style configuration
    >>> model = RoCBertModel(configuration)

    >>> # Accessing the model configuration
    >>> configuration = model.config
    ```"""

    model_type = "roc_bert"

    def __init__(
        self,
        vocab_size=30522,
        hidden_size=768,
        num_hidden_layers=12,
        num_attention_heads=12,
        intermediate_size=3072,
        hidden_act="gelu",
        hidden_dropout_prob=0.1,
        attention_probs_dropout_prob=0.1,
        max_position_embeddings=512,
        type_vocab_size=2,
        initializer_range=0.02,
        layer_norm_eps=1e-12,
        use_cache=True,
        pad_token_id=0,
        position_embedding_type="absolute",
        classifier_dropout=None,
        enable_pronunciation=True,
        enable_shape=True,
        pronunciation_embed_dim=768,
        pronunciation_vocab_size=910,
        shape_embed_dim=512,
        shape_vocab_size=24858,
        concat_input=True,
        **kwargs,
    ):
        self.vocab_size = vocab_size
        self.max_position_embeddings = max_position_embeddings
        self.hidden_size = hidden_size
        self.num_hidden_layers = num_hidden_layers
        self.num_attention_heads = num_attention_heads
        self.intermediate_size = intermediate_size
        self.hidden_act = hidden_act
        self.hidden_dropout_prob = hidden_dropout_prob
        self.attention_probs_dropout_prob = attention_probs_dropout_prob
        self.initializer_range = initializer_range
        self.type_vocab_size = type_vocab_size
        self.layer_norm_eps = layer_norm_eps
        self.use_cache = use_cache
        self.enable_pronunciation = enable_pronunciation
        self.enable_shape = enable_shape
        self.pronunciation_embed_dim = pronunciation_embed_dim
        self.pronunciation_vocab_size = pronunciation_vocab_size
        self.shape_embed_dim = shape_embed_dim
        self.shape_vocab_size = shape_vocab_size
        self.concat_input = concat_input
        self.position_embedding_type = position_embedding_type
        self.classifier_dropout = classifier_dropout
        super().__init__(pad_token_id=pad_token_id, **kwargs)
