def set(self, target, value):
"""Set the value of this attribute for the passed object.
"""
if self.path is None:
# There is no path defined on this resource.
# We can do no magic to set the value.
self.set = lambda *a: None
return None
if self._segments:
# Attempt to resolve access to this attribute.
self.get(target)
if self._segments:
# Attribute is not fully resolved; an interim segment is null.
return
# Resolve access to the parent object.
# For a single-segment path this will effectively be a no-op.
parent_getter = compose(*self._getters[:-1])
target = parent_getter(target)
# Make the setter.
func = self._make_setter(self.path.split('.')[-1], target.__class__)
# Apply the setter now.
func(target, value)
# Replace this function with the constructed setter.
def setter(target, value):
func(parent_getter(target), value)
self.set = setter
def get(self, target):
"""Retrieve the value of this attribute from the passed object.
"""
if self.path is None:
# There is no path defined on this resource.
# We can do no magic to get the value.
self.get = lambda *a: None
return None
# Iterate and resolve each constructed getter.
for func in self._getters:
if target is None:
# No more getters can be resolved.
return None
# Resolve this getter and continue iteration.
target = func(target)
# Are their segments remaining to make a getter for?
while self._segments:
if target is None:
# No more getters can be made.
return None
# Fetch the next path segment.
segment = self._segments.pop(0)
# Make and append the corresponding getter.
func = self._make_getter(segment, target.__class__)
self._getters.append(func)
# Resolve the getter.
target = func(target)
# Have we finished resolving the getters?
if not self._segments:
# Compose a replacement get function that just iterates over
# the getters.
self.get = compose(*self._getters)
# Return our resolved value.
return target
def _resolve_get(self, resolver, key, target):
if self.path is None:
# There is no path defined on this resource.
# We can do no magic to get the value.
resolver[key] = lambda *a: None
return None
# Iterate and resolve each constructed getter.
for func in self._getters[key]:
if target is None:
# No more getters can be resolved.
return None
# Resolve this getter and continue iteration.
target = func(target)
# Are their segments remaining to make a getter for?
while self._segments[key]:
if target is None:
# No more getters can be made.
return None
# Fetch the next path segment.
segment = self._segments[key].pop(0)
# Make and append the corresponding getter.
func = self._make_getter(segment, key)
self._getters[key].append(func)
# Resolve the getter.
target = func(target)
# Have we finished resolving the getters?
if not self._segments[key]:
# Compose a replacement get function that just iterates over
# the getters.
resolver[key] = compose(*self._getters[key])
# Return our resolved value.
return target
def _resolve_get(self, resolver, key, target):
if self.path is None:
# There is no path defined on this resource.
# We can do no magic to get the value.
resolver[key] = lambda *a: None
return None
# Iterate and resolve each constructed getter.
for func in self._getters[key]:
if target is None:
# No more getters can be resolved.
return None
# Resolve this getter and continue iteration.
target = func(target)
# Are their segments remaining to make a getter for?
while self._segments[key]:
if target is None:
# No more getters can be made.
return None
# Fetch the next path segment.
segment = self._segments[key].pop(0)
# Make and append the corresponding getter.
func = self._make_getter(segment, key)
self._getters[key].append(func)
# Resolve the getter.
target = func(target)
# Have we finished resolving the getters?
if not self._segments[key]:
# Compose a replacement get function that just iterates over
# the getters.
resolver[key] = compose(*self._getters[key])
# Return our resolved value.
return target
def set(self, target, value):
"""Set the value of this attribute for the passed object.
"""
if not self._set:
return
if self.path is None:
# There is no path defined on this resource.
# We can do no magic to set the value.
self.set = lambda *a: None
return None
if self._segments[target.__class__]:
# Attempt to resolve access to this attribute.
self.get(target)
if self._segments[target.__class__]:
# Attribute is not fully resolved; an interim segment is null.
return
# Resolve access to the parent object.
# For a single-segment path this will effectively be a no-op.
parent_getter = compose(*self._getters[target.__class__][:-1])
target = parent_getter(target)
# Make the setter.
func = self._make_setter(self.path.split('.')[-1], target.__class__)
# Apply the setter now.
func(target, value)
# Replace this function with the constructed setter.
def setter(target, value):
func(parent_getter(target), value)
self.set = setter
