def __getattr__(self, name):
""" Lookup the given variable in the local variables and the ARTS workspace.
Args:
name(str): Name of the attribute (variable)
Raises:
ValueError: If the variable is not found.
"""
group_id = None
if name in self._vars:
var = self._vars[name]
var.update()
return var
else:
i = arts_api.lookup_workspace_variable(name.encode())
if i < 0:
raise AttributeError("No workspace variable " + str(name) + " found.")
vs = arts_api.get_variable(i)
group_id = vs.group
description = vs.description.decode("utf8")
# Get its symbolic representation
wsv = WorkspaceVariable(i, name, group_names[group_id], description, self)
return wsv
def create(self, ws, name=None):
"""
Call to <Group>Create WSMs are handled differently. This method simply
determines the group type from the function name and then add a variable of
this type to the workspace ws. A handle of this variable is then added to
as attribute to the typhon.arts.workspace.variables module.
Args:
ws(Workspace): Workspace object to add the variable to
name(str): Name of the variable to add to the workspace
"""
group = WorkspaceMethod.create_regexp.match(self.name).group(1)
group_id = group_ids[group]
if not name:
name = "__anonymous_" + str(len(ws._vars))
ws_id = arts_api.add_variable(ws.ptr, group_id, name.encode())
else:
# Is there a WSM with that name?
if name in workspace_methods.keys():
raise Exception("A WSM with the name " + name +
" already exists.")
# Is there a WSV with that name?
ws_id = arts_api.lookup_workspace_variable(name.encode())
# Is yes, check that it is of the same group?
if not ws_id == -1:
v = arts_api.get_variable(ws_id)
if not v.group == group_id:
raise Exception("A WSV with the name " + name +
" but of goup " + group_names[v.group] +
" already exists.")
# Otherwise we add the variable.
else:
ws_id = arts_api.add_variable(ws.ptr, group_id, name.encode())
wsv = WorkspaceVariable(ws_id, name, group, "User defined variable.",
ws)
setattr(variables, name, wsv)
ws._vars[name] = wsv
return wsv
