Delete op_tokenizer.py
Browse files- op_tokenizer.py +0 -268
op_tokenizer.py
DELETED
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import json
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from typing import List, Optional, Dict
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from transformers import PreTrainedTokenizer
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import os
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import json
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import re
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default_config = {
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"custom_digits": "0123456789ABCDEF",
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"variable_atoms": {
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"left_operand": "a", # 左操作数变量名
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"right_operand": "b" # 右操作数变量名
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},
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"other_symbols_atoms": {
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"left_parenthesis": "(", # 左括号
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"right_parenthesis": ")", # 右括号
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"equals_sign": "=", # 等号,常用于赋值或比较
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"nan_symbol": "NaN", # 非数(Not a Number)
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"inf_symbol": "Inf" # 无穷大(Infinity)
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},
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"operator_symbol_min_len": 1,
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"operator_symbol_max_len": 3,
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"basic_operator_symbols": ["+", "-", "*", "/", "%"],
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"base_symbols": [
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"≮⫘↔",
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"⫏≰",
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"⪩⨒∯",
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"⇑⪆",
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"↹⩛",
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"≴∭⊉",
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"⪪⊹⋣",
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"⋋%⋟",
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"⊺⇮",
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"⋰*⋻",
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"⫖↰⪸",
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"⪎⋱⫍",
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"⨗⨭⨅",
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"⫶⩼⫲",
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"∃⊬"
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],
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"comparison_ops": ["==", ">", "<", ">=", "<=", "!="],
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"logical_connectors": ["and", "or"],
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"definition_symbols": [
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",",
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";",
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"if",
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"else",
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"{",
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"}",
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"abs"
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]
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}
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class OpTokenizer(PreTrainedTokenizer):
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def __init__(self, vocab_file, **kwargs):
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self.param_config= default_config
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self.vocab = self.load_vocab(vocab_file)
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self.ids_to_tokens = {v: k for k, v in self.vocab.items()}
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super().__init__(**kwargs)
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# 定义基础符号
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self.basic_symbols = list("0123456789()=ABCDEFab")
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self.special_results = ['NaN', 'Inf']
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self.comparison_ops = ["==", ">", "<", ">=", "<=", "!="]
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self.logical_connectors = ["and", "or"]
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self.definition_symbols = [",", ";", "if", "else", "{", "}", "abs"]
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self.token_regex = self.build_token_regex()
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# 初始化特殊标记 ID
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self.pad_id = self.vocab['[PAD]']
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self.unk_id = self.vocab['[UNK]']
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self.sep_id = self.vocab['[SEP]']
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self.mask_id = self.vocab['[MASK]']
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self.bos_id = self.vocab['[BOS]']
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self.eos_id = self.vocab['[EOS]']
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self.eod_id = self.vocab['[EOD]']
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def load_vocab(self, vocab_file):
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# 实现你的词表加载逻辑
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with open(vocab_file, encoding="utf-8") as f:
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vocab = json.load(f)
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return vocab
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def save_vocabulary(self, save_directory, filename_prefix=""):
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if filename_prefix is None:
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filename_prefix = ""
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if not os.path.exists(save_directory):
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os.makedirs(save_directory)
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vocab_file_path = os.path.join(save_directory, filename_prefix + "vocab.json")
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with open(vocab_file_path, "w", encoding="utf-8") as f:
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json.dump(self.vocab, f, ensure_ascii=False, indent=4)
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print(f"Vocabulary saved to {vocab_file_path}")
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return (vocab_file_path,) # 返回元组而不是列表
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def build_token_regex(self):
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"""构建分词正则表达式,逐字符、符号进行匹配"""
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# 特殊结果的正则表达式(比如 NaN, Inf)
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special_results = [re.escape(result) for result in self.special_results]
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# 比较操作符的正则表达式
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comparison_ops = [re.escape(op) for op in self.comparison_ops]
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# 逻辑连接符的正则表达式
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logical_connectors = [re.escape(connector) for connector in self.logical_connectors]
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operator_pattern = r"(?P<OPERATOR>([+\-*/%]|[\u2200-\u22FF\u2A00-\u2BFF\u2190-\u21FF])+)"
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variable_pattern = r"(?P<VARIABLE>[a-b])"
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digit_pattern = r"(?P<DIGIT>[0-9A-F])"
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special_result_pattern = r"(?P<SPECIAL_RESULT>" + "|".join(special_results) + ")"
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comparison_ops_pattern = r"(?P<COMPARISON_OP>" + "|".join(comparison_ops) + ")"
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logical_connectors_pattern = r"(?P<LOGICAL_CONNECTOR>" + "|".join(logical_connectors) + ")"
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if_else_pattern = r"(?P<IF_ELSE>if|else)"
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whitespace_pattern = r"(?P<WHITESPACE>\s+)"
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abs_pattern = r"(?P<ABS>abs)"
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punctuation_patterns = [
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r"(?P<PARENTHESIS_LEFT>\()",
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r"(?P<PARENTHESIS_RIGHT>\))",
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r"(?P<CURLY_BRACE_LEFT>{)",
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r"(?P<CURLY_BRACE_RIGHT>})",
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r"(?P<SEMICOLON>;)",
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r"(?P<COMMA>,)",
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r"(?P<EQUAL>=)"
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]
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# 所有模式结合在一起,注意先后顺序,应该先匹配长的
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token_patterns = [
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operator_pattern,
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special_result_pattern, # 特殊符号(如 NaN, Inf)
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comparison_ops_pattern, # 比较操作符
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logical_connectors_pattern, # 逻辑连接符
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if_else_pattern, # if 和 else
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abs_pattern,
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digit_pattern,
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variable_pattern, # 小写字母(变量名)
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whitespace_pattern, # 空格和换行符
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] + punctuation_patterns # 将标点符号的正则表达式添加到列表中
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# 使用 | 连接所有模式
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combined_pattern = "|".join(token_patterns)
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# 返回编译后的正则表达式对象
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return re.compile(combined_pattern)
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def tokenize(self, text: str, mode: str = 'text', add_special_tokens: bool = True):
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if mode == 'definition':
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return self._tokenize_definition(text, add_special_tokens)
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elif mode == 'text':
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return self._tokenize_equation(text, add_special_tokens)
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elif mode == 'withdef_text':
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return self._tokenize_withdef_text(text, add_special_tokens)
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else:
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raise ValueError(f"Unsupported mode: {self.mode}")
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def _tokenize_definition(self, text, add_special_tokens):
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tokens = []
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if add_special_tokens:
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tokens.append('[DEF_START]')
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for match in self.token_regex.finditer(text):
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token_type = match.lastgroup
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token_value = match.group(token_type)
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if token_type != "WHITESPACE":
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tokens.append(token_value)
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if add_special_tokens:
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tokens.append('[DEF_END]')
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return tokens
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def _tokenize_equation(self, text, add_special_tokens):
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tokens = []
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if add_special_tokens:
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tokens.append('[EQ_START]')
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self.digit_pattern = f"[{re.escape(self.param_config['custom_digits'])}]"
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self.number_pattern = f"[-]?{self.digit_pattern}+"
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self.base_symbols_pattern = f"(?:{'|'.join(map(re.escape, self.param_config['base_symbols']))})"
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self.base_symbols_number_pattern = f"({self.base_symbols_pattern}{self.number_pattern})"
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parts = re.split(self.base_symbols_number_pattern, text)
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final_parts = []
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for part in parts:
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if re.search(self.number_pattern, part):
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sub_parts = re.split(f"({self.number_pattern})", part)
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final_parts.extend(sub_parts)
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else:
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final_parts.append(part)
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for part in final_parts:
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for match in self.token_regex.finditer(part):
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token_type = match.lastgroup
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token_value = match.group(token_type)
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if token_type != "WHITESPACE":
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tokens.append(token_value)
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if add_special_tokens:
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tokens.append('[EQ_END]')
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return tokens
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def _tokenize_withdef_text(self, text, add_special_tokens):
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tokens = []
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segments = re.split(r'(\[DEF_START\]|\[DEF_JOIN\]|\[DEF_END\]|\[EQ_START\]|\[EQ_END\])', text)
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current_mode = None
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for seg in segments:
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seg = seg.strip()
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if not seg:
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continue
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if seg in ['[DEF_START]', '[DEF_JOIN]']:
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if add_special_tokens:
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tokens.append(seg)
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current_mode = 'definition'
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elif seg == '[DEF_END]':
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if add_special_tokens:
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tokens.append(seg)
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current_mode = None
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elif seg == '[EQ_START]':
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if add_special_tokens:
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tokens.append(seg)
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current_mode = 'text'
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elif seg == '[EQ_END]':
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if add_special_tokens:
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tokens.append(seg)
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current_mode = None
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else:
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if current_mode == 'definition':
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inner_tokens = self._tokenize_definition(seg, add_special_tokens=False)
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tokens.extend(inner_tokens)
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elif current_mode == 'text':
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inner_tokens = self._tokenize_equation(seg, add_special_tokens=False)
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tokens.extend(inner_tokens)
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else:
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tokens.extend(seg.split())
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return tokens
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def convert_tokens_to_ids(self, tokens):
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if isinstance(tokens[0], str):
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return [self.vocab.get(token, self.vocab['[UNK]']) for token in tokens]
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return tokens
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def convert_ids_to_tokens(self, ids):
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reverse_vocab = {v: k for k, v in self.vocab.items()}
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return [reverse_vocab.get(i, '[UNK]') for i in ids]
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def encode(self, text, mode=None, add_special_tokens=None):
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tokens = self.tokenize(text, mode=mode, add_special_tokens=add_special_tokens)
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return self.convert_tokens_to_ids(tokens)
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def decode(self, ids, skip_special_tokens=False):
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tokens = self.convert_ids_to_tokens(ids)
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if skip_special_tokens:
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tokens = [t for t in tokens if not (t.startswith('[') and t.endswith(']'))]
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return " ".join(tokens).replace(" ##", "")
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def get_vocab(self):
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return self.vocab
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