scyther/gui/Scyther/Error.py
2007-06-11 14:12:33 +02:00

111 lines
3.0 KiB
Python

#!/usr/bin/python
"""
Scyther : An automatic verifier for security protocols.
Copyright (C) 2007 Cas Cremers
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""
#
# Scyther interface error classes
#
#---------------------------------------------------------------------------
class Error(Exception):
"""Base class for exceptions in this module."""
pass
class ScytherError(Error):
"""Exception raised for errors generated by the backend
Attributes:
errorlist -- list of error lines are retrieved from the
backend
"""
def __init__(self, errorlist):
self.errorlist = errorlist
def __str__(self):
s = "Scyther backend reported the following errors:\n"
s = s + "\n".join(self.errorlist)
return s
class InputError(Error):
"""Exception raised for errors in the input.
Attributes:
expression -- input expression in which the error occurred
message -- explanation of the error
"""
def __init__(self, expression, message):
self.expression = expression
self.message = message
class BinaryError(Error):
"""Raised when the Scyther executable is not found.
Attributes:
file -- file location at which we should have been able to find it.
"""
def __init__(self, file):
self.file = file
def __str__(self):
return "Could not find Scyther executable at '%s'" % (self.file)
class NoBinaryError(Error):
"""Raised when the Scyther executable is not defined.
Attributes:
None.
"""
def __str__(self):
return "Scyther class attribute 'program' was not defined."
class UnknownPlatformError(Error):
"""Raised when the platform is not supported yet.
Attributes:
platform -- string describing the platform.
"""
def __init__(self, platform):
self.platform = platform
def __str__(self):
return "The %s platform is currently unsupported." % self.platform
class StringListError(Error):
"""Raised when the a string should be a list of strings or a string
Attributes:
obj -- object that did not fit
"""
def __init__(self, obj):
self.obj = obj
def __str__(self):
return "Got '%s', which is type '%s' instead of a (list of) string." % (self.obj, type(self.obj))
# vim: set ts=4 sw=4 et list lcs=tab\:>-: