





import json
import os
import unittest

from transformers.models.xlm.tokenization_xlm import VOCAB_FILES_NAMES, XLMTokenizer
from transformers.testing_utils import slow

from ...test_tokenization_common import TokenizerTesterMixin







class     __snake_case       (							__lowerCamelCase   ,			unittest.TestCase			):





       '''simple docstring'''







       lowerCAmelCase__      		=     XLMTokenizer
       lowerCAmelCase__      		=     False




       def 							UpperCAmelCase__ (  self :    Optional[int]		):
         super().setUp()

         # Adapted from Sennrich et al. 2015 and https://github.com/rsennrich/subword-nmt
         __snake_case:						int   =						[
             """l""",
             """o""",
             """w""",
             """e""",
             """r""",
             """s""",
             """t""",
             """i""",
             """d""",
             """n""",
             """w</w>""",
             """r</w>""",
             """t</w>""",
             """lo""",
             """low""",
             """er</w>""",
             """low</w>""",
             """lowest</w>""",
             """newer</w>""",
             """wider</w>""",
             """<unk>""",
         ]
         __snake_case:						Union[str, Any]   =						dict(zip(A							,				range(len(A		)		)		)		)
         __snake_case:						Any   =						["""l o 123""", """lo w 1456""", """e r</w> 1789""", """"""]

         __snake_case:						List[Any]   =						os.path.join(self.tmpdirname							,				VOCAB_FILES_NAMES["""vocab_file"""]		)
         __snake_case:						Dict   =						os.path.join(self.tmpdirname							,				VOCAB_FILES_NAMES["""merges_file"""]		)
         with open(self.vocab_file							,				"""w"""		) as fp:
           fp.write(json.dumps(A		)		)
         with open(self.merges_file							,				"""w"""		) as fp:
           fp.write("""\n""".join(A		)		)




       def 							UpperCAmelCase__ (  self :    str							,				A :    List[Any]		):
         __snake_case:						List[Any]   =						"""lower newer"""
         __snake_case:						Optional[int]   =						"""lower newer"""
         return input_text, output_text




       def 							UpperCAmelCase__ (  self :    Dict		):
         __snake_case:						Dict   =						XLMTokenizer(self.vocab_file							,				self.merges_file		)

         __snake_case:						int   =						"""lower"""
         __snake_case:						List[str]   =						["""low""", """er</w>"""]
         __snake_case:						Optional[int]   =						tokenizer.tokenize(A		)
         self.assertListEqual(A							,				A		)

         __snake_case:						List[str]   =						tokens + ["""<unk>"""]
         __snake_case:						List[str]   =						[14, 15, 20]
         self.assertListEqual(tokenizer.convert_tokens_to_ids(A		)							,				A		)






       @slow
       def 							UpperCAmelCase__ (  self :    Tuple		):
         __snake_case:						Optional[Any]   =						XLMTokenizer.from_pretrained("""xlm-mlm-en-2048"""		)

         __snake_case:						Union[str, Any]   =						tokenizer.encode("""sequence builders"""							,				add_special_tokens=A		)
         __snake_case:						Dict   =						tokenizer.encode("""multi-sequence build"""							,				add_special_tokens=A		)

         __snake_case:						List[Any]   =						tokenizer.build_inputs_with_special_tokens(A		)
         __snake_case:						Dict   =						tokenizer.build_inputs_with_special_tokens(A							,				A		)

         assert encoded_sentence == [0] + text + [1]
         assert encoded_pair == [0] + text + [1] + text_a + [1]













def 			A__							(    SCREAMING_SNAKE_CASE__)   ->    Union[str, Any]:
  __snake_case:						List[Any]   =						[]
  __snake_case:						List[str]   =						[]
  __snake_case:						List[str]   =						{
      """^""": 3,
      """*""": 2,
      """/""": 2,
      """%""": 2,
      """+""": 1,
      """-""": 1,
  }  # Priority of each operator
  __snake_case:						Union[str, Any]   =						len(SCREAMING_SNAKE_CASE__) if (len(SCREAMING_SNAKE_CASE__) > 7) else 7

  # Print table header for output
  print(
      """Symbol""".center(8)					,					"""Stack""".center(SCREAMING_SNAKE_CASE__)					,					"""Postfix""".center(SCREAMING_SNAKE_CASE__)					,					sep=""" | """					,					)
  print("""-""" * (print_width * 3 + 7))

  for x in infix:
    if x.isalpha() or x.isdigit():
      post_fix.append(SCREAMING_SNAKE_CASE__)  # if x is Alphabet / Digit, add it to Postfix
    elif x == "(":
      stack.append(SCREAMING_SNAKE_CASE__)  # if x is "(" push to Stack
    elif x == ")":  # if x is ")" pop stack until "(" is encountered
      while stack[-1] != "(":
        post_fix.append(stack.pop())  # Pop stack & add the content to Postfix
      stack.pop()
    else:
      if len(SCREAMING_SNAKE_CASE__) == 0:
        stack.append(SCREAMING_SNAKE_CASE__)  # If stack is empty, push x to stack
      else:  # while priority of x is not > priority of element in the stack
        while len(SCREAMING_SNAKE_CASE__) > 0 and priority[x] <= priority[stack[-1]]:
          post_fix.append(stack.pop())  # pop stack & add to Postfix
        stack.append(SCREAMING_SNAKE_CASE__)  # push x to stack

    print(
        x.center(8)					,					("""""".join(SCREAMING_SNAKE_CASE__)).ljust(SCREAMING_SNAKE_CASE__)					,					("""""".join(SCREAMING_SNAKE_CASE__)).ljust(SCREAMING_SNAKE_CASE__)					,					sep=""" | """					,					)  # Output in tabular format

  while len(SCREAMING_SNAKE_CASE__) > 0:  # while stack is not empty
    post_fix.append(stack.pop())  # pop stack & add to Postfix
    print(
        """ """.center(8)					,					("""""".join(SCREAMING_SNAKE_CASE__)).ljust(SCREAMING_SNAKE_CASE__)					,					("""""".join(SCREAMING_SNAKE_CASE__)).ljust(SCREAMING_SNAKE_CASE__)					,					sep=""" | """					,					)  # Output in tabular format

  return "".join(SCREAMING_SNAKE_CASE__)  # return Postfix as str







def 			A__							(    SCREAMING_SNAKE_CASE__)   ->    Tuple:
  __snake_case:						Optional[int]   =						list(infix[::-1])  # reverse the infix equation

  for i in range(len(SCREAMING_SNAKE_CASE__)):
    if infix[i] == "(":
      __snake_case:						int   =						""")"""  # change "(" to ")"
    elif infix[i] == ")":
      __snake_case:						Dict   =						"""("""  # change ")" to "("

  return (infix_2_postfix("""""".join(SCREAMING_SNAKE_CASE__)))[
      ::-1
  ]  # call infix_2_postfix on Infix, return reverse of Postfix


if __name__ == "__main__":
      __UpperCAmelCase       :   Optional[int]				       =							input("\nEnter an Infix Equation = ")  # Input an Infix equation
      __UpperCAmelCase       :   int				       =							"".join(Infix.split())  # Remove spaces from the input
      print("\n\t", Infix, "(Infix) -> ", infix_2_prefix(Infix), "(Prefix)")






