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from synergine.core.exception.NotFoundError import NotFoundError |
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class ActionManager(): |
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""" |
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Manaer of Action object |
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""" |
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def get_steps_for_actions(self, actions: list): |
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""" |
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Return a list of hierarchical list of action where an action is always |
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placed in list after list containing his Action dependencies |
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:param actions: list of Action |
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:return: list of steps where step contain list of Event |
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""" |
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actions_copy = actions[:] |
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steps = [[]] |
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count = 0 |
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for action in actions_copy: |
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count += 1 |
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if count > 10000: # TODO: hard code |
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raise Exception("Impossible to find dependencies of action", actions) |
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last_action = action |
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action_dependencies = action.get_dependencies() |
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if action_dependencies: |
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try: |
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step_index = self._get_step_index_for_dependencies(steps, action_dependencies) |
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if step_index is not None: |
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try: |
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steps[step_index+1].append(action) |
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except IndexError: |
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steps.append([action]) |
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else: |
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step = [] |
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step.extend(action_dependencies) |
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steps.append(step) |
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# Si une des dependences n'est pas encore dans les steps, on s'occupera de cette action plus tard |
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except NotFoundError: |
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# TODO: Prevoir le cas ou la dependance n'existera jamais dans la liste et lever une erreur |
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actions_copy.append(action) |
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else: |
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steps[0].append(action) |
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return steps |
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def _get_step_index_for_dependencies(self, steps, dependencies): |
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step_index_found = None |
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for dependency in dependencies: |
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step_index = self._get_step_index_for_dependency(steps, dependency) |
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if step_index_found is None: |
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step_index_found = step_index |
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else: |
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if step_index > step_index_found: |
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step_index_found = step_index |
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return step_index_found |
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def _get_step_index_for_dependency(self, steps, dependency): |
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for step_index, step_actions in enumerate(steps): |
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for step_action in step_actions: |
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if issubclass(step_action, dependency): |
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return step_index |
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raise NotFoundError() |
buxx /
synergine
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