def validate_no_variable_references()

in tools/plisttool/plisttool.py [0:0]

• 37 lines of code
• 6 McCabe index (conditional complexity)

  def validate_no_variable_references(self, target, key_name, value, msg_additions=None):
    """Ensures there are no variable references left in value (recursively).

    Args:
      target: The name of the target for which the plist is being built.
      key_name: The name of the key this value is part of.
      value: The value to check.
      msg_additions: Dictionary of variable names to custom strings to add to the
        error messages.
    Raises:
      PlistToolError: If there is a variable substitution that wasn't resolved.
    """
    additions = {}
    if msg_additions:
      for k, v in msg_additions.items():
        additions[k] = v
        additions[k + ':rfc1034identifier'] = v

    def _helper(key_name, value):
      if isinstance(value, str):
        m = VARIABLE_REFERENCE_RE.search(value)
        if m:
          variable_name = ExtractVariableFromMatch(m)
          if not variable_name:
            # Reference wasn't property formed, raise that issue.
            raise PlistToolError(INVALID_SUBSTITUTATION_REFERENCE_MSG % (
                target, m.group(0), key_name, value))
          err_msg = UNKNOWN_SUBSTITUTATION_REFERENCE_MSG % (
              target, m.group(0), key_name, value)
          msg_addition = additions.get(variable_name)
          if msg_addition:
            err_msg = err_msg + ' ' + msg_addition
          raise PlistToolError(err_msg)
        return

      if isinstance(value, dict):
        key_prefix = key_name + ':' if key_name else ''
        for k, v in value.items():
          _helper(key_prefix + k, v)
          m = VARIABLE_REFERENCE_RE.search(k)
          if m:
            raise PlistToolError(
                UNSUPPORTED_SUBSTITUTATION_REFERENCE_IN_KEY_MSG % (
                target, m.group(0), key_prefix + k))
        return

      if isinstance(value, list):
        for i, v in enumerate(value):
          reporting_key = '%s[%d]' % (key_name, i)
          _helper(reporting_key, v)
        return

    # Off we go...
    _helper(key_name, value)