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# Copyright 2016-2020 Andrew Myers, David Grote, Maxence Thevenet
#
#
# This file is part of WarpX.
#
# License: BSD-3-Clause-LBNL
import numpy as np
class Bucket(object):
"""
The purpose of this class is to be a named bucket for holding attributes.
This attributes will be concatenated into a string and passed into argv during initialization.
"""
def __init__(self, instancename, **defaults):
self._localsetattr('instancename', instancename)
self._localsetattr('argvattrs', {})
for name, value in defaults.items():
self.add_new_attr(name, value)
def _localsetattr(self, name, value):
object.__setattr__(self, name, value)
def add_new_attr(self, name, value):
"""Names starting with "_" are make instance attributes.
Otherwise the attribute is added to the args list.
"""
if name.startswith('_'):
self._localsetattr(name, value)
else:
self.argvattrs[name] = value
def __setattr__(self, name, value):
self.add_new_attr(name, value)
def __getattr__(self, name):
try:
return self.argvattrs[name]
except KeyError:
return object.__getattr__(self, name)
def check_consistency(self, vname, value, errmsg):
if vname in self.argvattrs:
assert (self.argvattrs[vname] is None) or (self.argvattrs[vname] == value), Exception(errmsg)
def attrlist(self):
"Concatenate the attributes into a string"
result = []
for attr, value in self.argvattrs.items():
if value is None:
continue
# --- repr is applied to value so that for floats, all of the digits are included.
# --- The strip of "'" is then needed when value is a string.
if isinstance(value, str):
if value.find('=') > -1:
# --- Expressions with temporary variables need to be inside quotes
rhs = f'"{value}"'
else:
rhs = value
elif np.iterable(value):
if len(value) == 0:
# --- Skip if empty
continue
# --- For lists, tuples, and arrays make a space delimited string of the values.
# --- The lambda is needed in case this is a list of strings.
rhs = ' '.join(map(lambda s : repr(s).strip("'"), value))
elif isinstance(value, bool):
rhs = 1 if value else 0
else:
rhs = value
attrstring = '{0}.{1} = {2}'.format(self.instancename, attr, repr(rhs).strip("'"))
result += [attrstring]
return result
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