scripts/qapi/error.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # QAPI error classes
   4 #
   5 # Copyright (c) 2017-2019 Red Hat Inc.
   6 #
   7 # Authors:
   8 #  Markus Armbruster <armbru@redhat.com>
   9 #  Marc-André Lureau <marcandre.lureau@redhat.com>
  10 #
  11 # This work is licensed under the terms of the GNU GPL, version 2.
  12 # See the COPYING file in the top-level directory.
  13
  14
  15 class QAPIError(Exception):
  16     def __init__(self, info, col, msg):
  17         Exception.__init__(self)
  18         self.info = info
  19         self.col = col
  20         self.msg = msg
  21
  22     def __str__(self):
  23         loc = str(self.info)
  24         if self.col is not None:
  25             assert self.info.line is not None
  26             loc += ':%s' % self.col
  27         return loc + ': ' + self.msg
  28
  29
  30 class QAPIParseError(QAPIError):
  31     def __init__(self, parser, msg):
  32         col = 1
  33         for ch in parser.src[parser.line_pos:parser.pos]:
  34             if ch == '\t':
  35                 col = (col + 7) % 8 + 1
  36             else:
  37                 col += 1
  38         super().__init__(parser.info, col, msg)
  39
  40
  41 class QAPISemError(QAPIError):
  42     def __init__(self, info, msg):
  43         super().__init__(info, None, msg)