def conjunction(nodes: Set[Node], name: str = None, description: str = None) -> Node:
try:
new_goal = Goal.conjunction(nodes, name, description)
except GoalException as e:
raise CGGOperationFail(nodes=nodes, operation=CGGFailOperations.algebra_op, goal_ex=e)
new_node = Node(goal=new_goal)
new_node.add_children(link=Link.CONJUNCTION, nodes=nodes)
return new_node
description="Patrolling of locations a and b, beginning from location a",
specification=Patrolling([t["a"], t["b"]]) & Init(t["a"]))
g2 = Goal(
name="patrol_c_d_init_c",
description="Patrolling of locations c and d, beginning from location c",
specification=Patrolling([t["c"], t["d"]]) & Init(t["c"]))
try:
g12 = Goal.composition({g1, g2})
print(g12)
except GoalException as e:
print("Initial location is both 'a' and 'c'")
try:
g12 = Goal.conjunction({g1, g2})
print(g12)
except GoalException as e:
print(
"Conjunction has also failed since both goals have same ('TRUE') assumptions"
)
"""We can remove the condition to begin from location c as well"""
g2 = Goal(
name="patrol_c_d_init_c",
description="Patrolling of locations c and d, beginning from location c",
specification=Patrolling([t["c"], t["d"]]))
try:
g12 = Goal.composition({g1, g2})
print(g12)
print("Composition Successful")