1645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez# Copyright 2014 The Chromium Authors. All rights reserved.
2645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez# Use of this source code is governed by a BSD-style license that can be
3645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez# found in the LICENSE file.
4645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez
5645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavezclass Error(Exception):
6645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez  """Base class for Mojo IDL bindings parser/generator errors."""
7645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez
8645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez  def __init__(self, filename, message, lineno=None, addenda=None, **kwargs):
9645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    """|filename| is the (primary) file which caused the error, |message| is the
10645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    error message, |lineno| is the 1-based line number (or |None| if not
11645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    applicable/available), and |addenda| is a list of additional lines to append
12645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    to the final error message."""
13645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    Exception.__init__(self, **kwargs)
14645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    self.filename = filename
15645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    self.message = message
16645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    self.lineno = lineno
17645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    self.addenda = addenda
18645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez
19645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez  def __str__(self):
20645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    if self.lineno:
21645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez      s = "%s:%d: Error: %s" % (self.filename, self.lineno, self.message)
22645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    else:
23645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez      s = "%s: Error: %s" % (self.filename, self.message)
24645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    return "\n".join([s] + self.addenda) if self.addenda else s
25645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez
26645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez  def __repr__(self):
27645501c2ab19a559ce82a1d5a29ced159a4c30fbLuis Hector Chavez    return str(self)
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