exceptions.py

"""
AirSchedule Exceptions
2020

This file holds all the exceptions that AirSchedule throws
Typically in response to a misconfigured .scn file
"""


# If the create_simObject() can't determine a certain line of the scn file
# it will raise a MalformedScnException that points to the problem
class MalformedScnException(Exception):
    def __init__(self, context, line):
        self.context = context
        self.line = line
        self.message = "\n\n" + "".join(x + "\n" for x in self.context) + "\n" + str(self.context[self.line]) + " <--"

    def __str__(self):
        return self.message


# Raised if the parser can't find the object required to resolve a reference
class ObjectNotFoundException(Exception):
    def __init__(self, object_type, object_name):
        self.message = "\n\nCould not find type '%s' named '%s'\nWas the wrong type provided or the object not defined?" % (
            object_type, object_name)

    def __str__(self):
        return self.message


# This can be thrown when trying to convert a time string in the scn file into a datetime object
class TimeNotISOException(Exception):
    def __init__(self, time):
        self.message = "\n\nThe time '%s' could not be parsed, is it in ISO 8601?" % time

    def __str__(self):
        return self.message


# A generic error when a variable in the scn file isn't what it's supposed to be
class BadFormatException(Exception):
    def __init__(self, problem):
        self.message = "\n\nThe data '%s' could not be parsed" % problem

    def __str__(self):
        return self.message


# This is raised by  the parser if it fines two objects with the same type and name, which would break the simulator
class ObjectDefinedTwiceException(Exception):
    def __init__(self, temp_object):
        self.message = "\n\nThe object '%s %s' is defined twice" % (temp_object.object_type, temp_object.object_name)

    def __str__(self):
        return self.message


class NoScenarioFoundException(Exception):
    def __init__(self):
        self.message = "\n\nNo object with type 'scenario' could be found. One must be defined"

    def __str__(self):
        return self.message