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28
29from webkitpy.tool.steps.abstractstep import AbstractStep
30
31
32# FIXME: Unify with StepSequence?  I'm not sure yet which is the better design.
33class MetaStep(AbstractStep):
34    substeps = [] # Override in subclasses
35    def __init__(self, tool, options):
36        AbstractStep.__init__(self, tool, options)
37        self._step_instances = []
38        for step_class in self.substeps:
39            self._step_instances.append(step_class(tool, options))
40
41    @staticmethod
42    def _collect_options_from_steps(steps):
43        collected_options = []
44        for step in steps:
45            collected_options = collected_options + step.options()
46        return collected_options
47
48    @classmethod
49    def options(cls):
50        return cls._collect_options_from_steps(cls.substeps)
51
52    def run(self, state):
53        for step in self._step_instances:
54             step.run(state)
55