def __init__(self, name, distribution_shape=None, components=None):
Node.__init__(self, name)
if components is None:
assert distribution_shape is not None, "You have to either provied a list of components, or a " \
"distribution shape"
components = [SpectralComponent("main", distribution_shape)]
Source.__init__(self, components, PARTICLE_SOURCE)
# Add a node called 'spectrum'
spectrum_node = Node('spectrum')
spectrum_node._add_children(list(self._components.values()))
self._add_child(spectrum_node)
type(self).__call__ = type(self).get_flux
# Set the units
# Now sets the units of the parameters for the energy domain
current_units = get_units()
# energy as x and particle flux as y
x_unit = current_units.energy
y_unit = old_div(1, current_units.energy)
# Now set the units of the components
for component in list(self._components.values()):
component.shape.set_units(x_unit, y_unit)
def test_memory_leaks_setters():
root = Node("root")
node = Node("node")
refc_before_link = node_ctype._get_reference_counts(node)
root._add_child(node)
# Adding a node adds 1 reference
assert node_ctype._get_reference_counts(node) == refc_before_link + 1
# Remove the node and verify that the reference counts goes back to what it was
root._remove_child("node")
# Now we should go back to the original
assert node_ctype._get_reference_counts(node) == refc_before_link
# Now add a second node nested under the first one (root.node.node2)
node2 = Node("node2")
refc_before_link2 = node_ctype._get_reference_counts(node2)
root._add_child(node) # +1 for node
assert node_ctype._get_reference_counts(node) == refc_before_link + 1
node._add_child(node2) # +1 for node2 and +1 for node
assert node_ctype._get_reference_counts(node2) == refc_before_link2 + 1
# "node" is now also parent of node2, so its reference are now 2 more than the original
assert node_ctype._get_reference_counts(node) == refc_before_link + 2
# Clean up and verify that we go back to the original number of references
node._remove_child("node2") # -1 for node2, -1 for node
assert node_ctype._get_reference_counts(node2) == refc_before_link2
assert node_ctype._get_reference_counts(node) == refc_before_link + 1
root._remove_child("node") # -1 for node
assert node_ctype._get_reference_counts(node) == refc_before_link
# Now test add_children
node3 = Node("node3")
node4 = Node("node4")
refc_before_link3 = node_ctype._get_reference_counts(node3)
refc_before_link4 = node_ctype._get_reference_counts(node4)
root._add_children([node3, node4]) # +1 for both nodes
assert node_ctype._get_reference_counts(node3) == refc_before_link3 + 1
assert node_ctype._get_reference_counts(node3) == refc_before_link4 + 1
def __init__(self, source_name, spatial_shape, spectral_shape=None, components=None):
# Check that we have all the required information
# and set the units
current_u = get_units()
if spatial_shape.n_dim == 2:
# Now gather the component(s)
# We need either a single component, or a list of components, but not both
# (that's the ^ symbol)
assert (spectral_shape is not None) ^ (components is not None), "You have to provide either a single " \
"component, or a list of components " \
"(but not both)."
# If the user specified only one component, make a list of one element with a default name ("main")
if spectral_shape is not None:
components = [SpectralComponent("main", spectral_shape)]
# Components in this case have energy as x and differential flux as y
diff_flux_units = (current_u.energy * current_u.area * current_u.time) ** (-1)
# Now set the units of the components
for component in components:
component.shape.set_units(current_u.energy, diff_flux_units)
# Set the units of the brightness
spatial_shape.set_units(current_u.angle, current_u.angle, current_u.angle**(-2))
elif spatial_shape.n_dim == 3:
# If there is no spectral component then assume that the input is a template, which will provide the
# spectrum by itself. We just use a renormalization (a bias)
if spectral_shape is None and components is None:
# This is a template. Add a component which is just a renormalization
spectral_shape = Constant()
components = [SpectralComponent("main", spectral_shape)]
# set the units
diff_flux_units = (current_u.energy * current_u.area * current_u.time *
current_u.angle**2) ** (-1)
spatial_shape.set_units(current_u.angle, current_u.angle, current_u.energy, diff_flux_units)
else:
# the spectral shape has been given, so this is a case where the spatial template gives an
# energy-dependent shape and the spectral components give the spectrum
assert (spectral_shape is not None) ^ (components is not None), "You can provide either a single " \
"component, or a list of components " \
"(but not both)."
if spectral_shape is not None:
components = [SpectralComponent("main", spectral_shape)]
# Assign units
diff_flux_units = (current_u.energy * current_u.area * current_u.time) ** (-1)
# Now set the units of the components
for component in components:
component.shape.set_units(current_u.energy, diff_flux_units)
# Set the unit of the spatial template
spatial_shape.set_units(current_u.angle, current_u.angle, current_u.energy, current_u.angle**(-2))
else:
raise RuntimeError("The spatial shape must have either 2 or 3 dimensions.")
# Here we have a list of components
Source.__init__(self, components, EXTENDED_SOURCE)
# A source is also a Node in the tree
Node.__init__(self, source_name)
# Add the spatial shape as a child node, with an explicit name
self._spatial_shape = spatial_shape
self._add_child(self._spatial_shape)
# Add the same node also with the name of the function
#self._add_child(self._shape, self._shape.__name__)
# Add a node called 'spectrum'
spectrum_node = Node('spectrum')
spectrum_node._add_children(self._components.values())
self._add_child(spectrum_node)
def __init__(self,
source_name: str,
ra: Optional[float] = None,
dec: Optional[float] = None,
spectral_shape: Optional[Function1D] = None,
l: Optional[float] = None,
b: Optional[float] = None,
components=None,
sky_position: Optional[SkyDirection] = None):
# Check that we have all the required information
# (the '^' operator acts as XOR on booleans)
# Check that we have one and only one specification of the position
if not ((ra is not None and dec is not None) ^
(l is not None and b is not None) ^
(sky_position is not None)):
log.error(
"You have to provide one and only one specification for the position"
)
raise AssertionError()
# Gather the position
if not isinstance(sky_position, SkyDirection):
if (ra is not None) and (dec is not None):
# Check that ra and dec are actually numbers
try:
ra = float(ra)
dec = float(dec)
except (TypeError, ValueError):
log.error(
"RA and Dec must be numbers. If you are confused by this message, you "
"are likely using the constructor in the wrong way. Check the documentation."
)
raise AssertionError()
sky_position = SkyDirection(ra=ra, dec=dec)
else:
sky_position = SkyDirection(l=l, b=b)
self._sky_position: SkyDirection = sky_position
# Now gather the component(s)
# We need either a single component, or a list of components, but not both
# (that's the ^ symbol)
if not (spectral_shape is not None) ^ (components is not None):
log.error(
"You have to provide either a single component, or a list of components (but not both)."
)
raise AssertionError()
# If the user specified only one component, make a list of one element with a default name ("main")
if spectral_shape is not None:
components = [SpectralComponent("main", spectral_shape)]
Source.__init__(self, components, src_type=SourceType.POINT_SOURCE)
# A source is also a Node in the tree
Node.__init__(self, source_name)
# Add the position as a child node, with an explicit name
self._add_child(self._sky_position)
# Add a node called 'spectrum'
spectrum_node = Node('spectrum')
spectrum_node._add_children(list(self._components.values()))
self._add_child(spectrum_node)
# Now set the units
# Now sets the units of the parameters for the energy domain
current_units = get_units()
# Components in this case have energy as x and differential flux as y
x_unit = current_units.energy
y_unit = (current_units.energy * current_units.area *
current_units.time)**(-1)
# Now set the units of the components
for component in list(self._components.values()):
component.shape.set_units(x_unit, y_unit)
def test_memory_leaks_getters():
# Now test the getters
root = Node("root")
node1 = Node("node1")
node2 = Node("node2")
node3 = Node("node3")
refc_before_link_root = node_ctype._get_reference_counts(root)
refc_before_link1 = node_ctype._get_reference_counts(node1)
refc_before_link2 = node_ctype._get_reference_counts(node2)
refc_before_link3 = node_ctype._get_reference_counts(node3)
None_counts_before = node_ctype._get_reference_counts(None)
# Add 3 nodes to root
root._add_children([node1, node2,
node3]) # node1 +1, node2 +1, node3 + 1, root +3
node_again = root._get_child("node1") # node1 +1
assert node_ctype._get_reference_counts(node1) == refc_before_link1 + 2
del node_again # node1 -1
assert node_ctype._get_reference_counts(node1) == refc_before_link1 + 1
children = root._get_children() #node1 +1, node2 +1, node3 +1
assert len(children) == 3
assert node_ctype._get_reference_counts(node1) == refc_before_link1 + 2
assert node_ctype._get_reference_counts(node2) == refc_before_link2 + 2
assert node_ctype._get_reference_counts(node3) == refc_before_link3 + 2
assert node_ctype._get_reference_counts(root) == refc_before_link_root + 3
# test get_parent
root_again = node1._get_parent() # root +1
assert node_ctype._get_reference_counts(root) == refc_before_link_root + 4
del root_again # root -1
assert node_ctype._get_reference_counts(root) == refc_before_link_root + 3
# test _get_path
path = node2._get_path() # this shouldn't change any ref count
assert node_ctype._get_reference_counts(node1) == refc_before_link1 + 2
assert node_ctype._get_reference_counts(node2) == refc_before_link2 + 2
assert node_ctype._get_reference_counts(node3) == refc_before_link3 + 2
assert node_ctype._get_reference_counts(root) == refc_before_link_root + 3
# test _get_child_from_path
node4 = Node("node4")
refc_before_link4 = node_ctype._get_reference_counts(node4)
node3._add_child(node4) # node3 +1, node4 + 1
node4_again = root._get_child_from_path("node3.node4") # node4 +1
assert node_ctype._get_reference_counts(node4) == refc_before_link4 + 2
assert node_ctype._get_reference_counts(node3) == refc_before_link3 + 3
del node4_again # node4 -1
assert node_ctype._get_reference_counts(node4) == refc_before_link4 + 1
