def load_area(element, project, net):
id = utils.xml_int(element, "id")
init_type, init_value = project.parse_init_expression(
element.get("init-expr"),
get_source(element, "init"))
if init_type is None:
raise utils.PtpException("Expression is empty", get_source(element, "init"))
places = [ net.get_place(utils.xml_int(e, "id"))
for e in element.findall("place") ]
return Area(net, id, init_type, init_value, places)
def load_edge_in(element, project, net, transition):
id = utils.xml_int(element, "id")
place_id = utils.xml_int(element, "place-id")
inscriptions = [ EdgeInscription(config, expr, target)
for (config, expr, target) in
project.parse_edge_expression(element.get("expr"),
get_source(element, "inscription")) ]
edge = Edge(id, transition, net.get_place(place_id), inscriptions)
if element.find("size-substitution") is not None:
edge.size_substitution = element.find("size-substitution").text
return edge
def load_transition(element, project, net):
id = utils.xml_int(element, "id")
name = element.get("name")
guard = project.parse_expression(element.get("guard"),
get_source(element, "guard"),
allow_empty=True)
transition = Transition(net, id, name, guard)
transition.collective = utils.xml_bool(element, "collective", False)
transition.edges_in = map(lambda e:
load_edge_in(e, project, net, transition), element.findall("edge-in"))
transition.edges_out = map(lambda e:
load_edge_out(e, project, net, transition), element.findall("edge-out"))
if element.find("code") is not None:
transition.code = element.find("code").text
transition.trace_fire = element.find("trace") is not None
transition.clock = utils.xml_bool(element, "clock", False)
if transition.collective:
transition.root = project.parse_expression(element.get("root"),
get_source(element, "root"),
allow_empty=True)
if element.find("time-substitution") is not None:
transition.time_substitution = element.find("time-substitution").text
if element.find("clock-substitution") is not None:
transition.clock_substitution = element.find("clock-substitution").text
if element.find("verif-quit_flag") is not None:
transition.calls_quit = True
e = element.find("verif-occurrence")
if e is not None:
transition.occurrence_analysis = True
transition.occurrence_analysis_compare_process = utils.xml_bool(e, "process")
transition.occurrence_analysis_compare_binding = utils.xml_bool(e, "binding")
priority = element.get("priority").strip()
if priority == "":
transition.priority = 0
elif utils.is_integer(priority):
transition.priority = int(priority)
else:
raise utils.PtpException("Priority has to be integer or empty",
get_source(element, "priority"))
return transition
def load_transition(element, project, net):
id = utils.xml_int(element, "id")
name = element.get("name")
guard = project.parse_expression(element.get("guard"),
get_source(element, "guard"),
allow_empty=True)
transition = Transition(net, id, name, guard)
transition.collective = utils.xml_bool(element, "collective", False)
transition.edges_in = map(lambda e:
load_edge_in(e, project, net, transition), element.findall("edge-in"))
transition.edges_out = map(lambda e:
load_edge_out(e, project, net, transition), element.findall("edge-out"))
if element.find("code") is not None:
transition.code = element.find("code").text
transition.trace_fire = element.find("trace") is not None
transition.clock = utils.xml_bool(element, "clock", False)
if transition.collective:
transition.root = project.parse_expression(element.get("root"),
get_source(element, "root"),
allow_empty=True)
if element.find("time-substitution") is not None:
transition.time_substitution = element.find("time-substitution").text
if element.find("clock-substitution") is not None:
transition.clock_substitution = element.find("clock-substitution").text
if element.find("verif-quit_flag") is not None:
transition.calls_quit = True
e = element.find("verif-occurrence")
if e is not None:
transition.occurrence_analysis = True
transition.occurrence_analysis_compare_process = utils.xml_bool(e, "process")
transition.occurrence_analysis_compare_binding = utils.xml_bool(e, "binding")
priority = element.get("priority").strip()
if priority == "":
transition.priority = 0
elif utils.is_integer(priority):
transition.priority = int(priority)
else:
raise utils.PtpException("Priority has to be integer or empty",
get_source(element, "priority"))
return transition
def load_place(element, project, net):
id = utils.xml_int(element, "id")
typename = element.get("type")
project.parse_typename(typename,
get_source(element, "type")) # Throws exception if incorrect type
init_type, init_value = project.parse_init_expression(element.get("init-expr", ""),
get_source(element, "init"))
place = Place(net, id, typename, init_type, init_value)
if element.find("code") is not None:
place.code = element.find("code").text
load_place_tracing(element.find("trace"), place)
if element.find("verif-final-marking") is not None:
place.final_marking = bool(element.find("verif-final-marking").text)
place.interface_input = element.get("in")
place.interface_output = element.get("out")
return place
def load_net(element, project):
net = Net(project, utils.xml_int(element, "id"), utils.xml_str(element, "name"))
return net
def get_source(element, name):
id = utils.xml_int(element, "id")
return get_source_path(id, name)
