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# Copyright (c) 2016 Jaakko Luttinen
# MIT License
from .deterministic import Deterministic
class NodeConverter(Deterministic):
"""
Simple wrapper to transform moment converters into nodes
"""
def __init__(self, moments_converter, node):
self.moments_converter = moments_converter
self._parent_moments = (node._moments,)
self._moments = moments_converter.moments
super().__init__(node, dims=self._moments.dims)
def _compute_moments(self, u_node):
return self.moments_converter.compute_moments(u_node)
def _compute_message_to_parent(self, index, m_child, u_node):
if index != 0:
raise IndexError()
return self.moments_converter.compute_message_to_parent(m_child, u_node)
def _compute_weights_to_parent(self, index, weights):
if index != 0:
raise IndexError()
return self.moments_converter.compute_weights_to_parent(weights)
def _compute_plates_to_parent(self, index, plates):
if index != 0:
raise IndexError()
return self.moments_converter.plates_to_parent(plates)
def _compute_plates_from_parent(self, index, plates):
if index != 0:
raise IndexError()
return self.moments_converter.plates_from_parent(plates)
def _compute_plates_multiplier_from_parent(self, index, plates_multiplier):
if index != 0:
raise IndexError()
return self.moments_converter.plates_multiplier_from_parent(
plates_multiplier
)
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