colossalai

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#    Copyright 2023 lm-sys@FastChat
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#
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#    Licensed under the Apache License, Version 2.0 (the "License");
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#    you may not use this file except in compliance with the License.
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#    You may obtain a copy of the License at
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#
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#        http://www.apache.org/licenses/LICENSE-2.0
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#
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#    Unless required by applicable law or agreed to in writing, software
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#    distributed under the License is distributed on an "AS IS" BASIS,
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#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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#    See the License for the specific language governing permissions and
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#    limitations under the License.
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import dataclasses
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from enum import Enum, auto
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from typing import List
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class SeparatorStyle(Enum):
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    ADD_EOS_TOKEN = auto()
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@dataclasses.dataclass
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class Conversation:
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    system: str
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    roles: List[str]
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    messages: List[List[str]]
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    offset: int
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    sep_style: SeparatorStyle = SeparatorStyle.ADD_EOS_TOKEN
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    sep: str = "</s>"
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    skip_next: bool = False
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    def get_prompt(self):
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        if self.sep_style == SeparatorStyle.ADD_EOS_TOKEN:
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            ret = self.system
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            for role, message in self.messages:
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                if message:
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                    ret += role + ": " + message + self.sep
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                else:
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                    ret += role + ": "
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            return ret
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        else:
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            raise ValueError(f"Invalid style: {self.sep_style}")
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    def append_message(self, role, message):
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        self.messages.append([role, message])
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    def to_gradio_chatbot(self):
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        ret = []
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        for i, (role, msg) in enumerate(self.messages[self.offset :]):
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            if i % 2 == 0:
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                ret.append([msg, None])
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            else:
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                ret[-1][-1] = msg
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        return ret
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    def copy(self):
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        return Conversation(
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            system=self.system,
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            roles=self.roles,
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            messages=[[x, y] for x, y in self.messages],
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            offset=self.offset,
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            sep_style=self.sep_style,
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            sep=self.sep,
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        )
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    def dict(self):
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        return {
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            "system": self.system,
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            "roles": self.roles,
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            "messages": self.messages,
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            "offset": self.offset,
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            "sep": self.sep,
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        }
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conv = Conversation(
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    system="A chat between a curious human and an artificial intelligence assistant. "
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    "The assistant gives helpful, detailed, and polite answers to the human's questions.\n\n",
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    roles=("Human", "Assistant"),
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    messages=(),
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    offset=0,
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    sep_style=SeparatorStyle.ADD_EOS_TOKEN,
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    sep="</s>",
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)
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default_conversation = conv
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