39 def get_variable(name, variables, pos):  argument
40   if name in variables:
41     return variables[name]
43     Logger.test_failed('Missing definition of variable "{}"'.format(name), pos, variables)
46 def set_variable(name, value, variables, pos):  argument
47   if name not in variables:
48     return variables.copy_with(name, value)
50     Logger.test_failed('Multiple definitions of variable "{}"'.format(name), pos, variables)
53 def match_words(checker_word, string_word, variables, pos):  argument
60       pattern = re.escape(get_variable(expression.name, variables, pos))
79       variables = set_variable(expression.name, string_word[:match.end()], variables, pos)
88   return variables
91 def match_lines(checker_line, string_line, variables):  argument
108       new_variables = match_words(checker_word, string_word, variables, checker_line)
111         variables = new_variables
117   return variables
120 def get_eval_text(expression, variables, pos):  argument
125     return get_variable(expression.name, variables, pos)
128 def evaluate_line(checker_line, variables):  argument
131   hasIsaFeature = lambda feature: variables["ISA_FEATURES"].get(feature, False)
133                                       variables,