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environment: implement HasEnvironment.call_child_method (#1366)

This commit is contained in:
Sebastien Bourdeauducq 2019-09-30 23:58:36 +08:00
parent 0b1fb255a9
commit 4c1fe1de0d
1 changed files with 19 additions and 4 deletions

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@ -222,6 +222,23 @@ class HasEnvironment:
def register_child(self, child):
self.children.append(child)
def call_child_method(self, method, *args, **kwargs):
"""Calls the named method for each child, if it exists for that child,
in the order of registration.
:param method: Name of the method to call
:type method: str
:param args: Tuple of positional arguments to pass to all children
:param kwargs: Dict of keyword arguments to pass to all children
"""
for child in self.children:
try:
child_method = getattr(child, method)
except AttributeError:
pass
else:
child_method(*args, **kwargs)
def build(self):
"""Should be implemented by the user to request arguments.
@ -435,11 +452,9 @@ class EnvExperiment(Experiment, HasEnvironment):
Most experiments should derive from this class."""
def prepare(self):
"""This default prepare method calls :meth:`~artiq.language.environment.Experiment.prepare`
for all children, in the order of instantiation, if the child has a
for all children, in the order of registration, if the child has a
:meth:`~artiq.language.environment.Experiment.prepare` method."""
for child in self.children:
if hasattr(child, "prepare"):
child.prepare()
self.call_child_method("prepare")
def is_experiment(o):