def _compare_make_variables()

in tools/migration/ctoolchain_comparator_lib.py [0:0]

• 41 lines of code
• 12 McCabe index (conditional complexity)

def _compare_make_variables(make_variables_before, make_variables_after):
  """Compares two "CToolchain.MakeVariable" lists."""
  name_to_variable_before = {}
  name_to_variable_after = {}
  for variable in make_variables_before:
    name_to_variable_before[variable.name] = variable.value
  for variable in make_variables_after:
    name_to_variable_after[variable.name] = variable.value

  variable_names_before = set(name_to_variable_before.keys())
  variable_names_after = set(name_to_variable_after.keys())

  before_after_diff = variable_names_before - variable_names_after
  after_before_diff = variable_names_after - variable_names_before

  diff_string = "Difference in 'make_variable' field:"
  found_difference = False
  if before_after_diff:
    if not found_difference:
      print(diff_string)  # pylint: disable=superfluous-parens
      found_difference = True
    print(("* List before change contains entries for the following variables "
           "that the list after the change doesn't:\n%s") % _array_to_string(
               before_after_diff, ordered=True))
  if after_before_diff:
    if not found_difference:
      print(diff_string)  # pylint: disable=superfluous-parens
      found_difference = True
    print(("* List after change contains entries for the following variables "
           "that the list before the change doesn't:\n%s") % _array_to_string(
               after_before_diff, ordered=True))

  for variable in name_to_variable_before:
    value_before = name_to_variable_before[variable]
    value_after = name_to_variable_after.get(variable, None)
    if value_after and value_after != value_before:
      if not found_difference:
        print(diff_string)  # pylint: disable=superfluous-parens
        found_difference = True
      print(
          ("* Value for variable '%s' differs before and after the change:\n"
           "Value before change:\t'%s'\n"
           "Value after change:\t'%s'") % (variable, value_before, value_after))
  if found_difference:
    print("")  # pylint: disable=superfluous-parens
  return found_difference