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__author__ = 'roland'
def find_paths(cls, arg, path=None, seen=None, res=None, lev=0):
if lev == 0 and res is None:
res = []
if path is None:
path = []
if seen is None:
seen = [cls]
else:
if cls in seen:
return None
seen.append(cls)
for cn, c in cls.c_children.values():
_path = path + [cn]
if cn == arg:
if res is not None:
res.append(_path)
else:
if isinstance(c, list):
_c = c[0]
else:
_c = c
find_paths(_c, arg, _path, seen, res)
for an, typ, mult in cls.c_attributes.values():
if an == arg:
if res is not None:
res.append(path + [an])
if lev == 0:
return res
def set_arg(cls, arg, value):
res = []
for path in find_paths(cls, arg):
x = y = {}
for arc in path[:-1]:
y[arc] = {}
y = y[arc]
y[path[-1]] = value
res.append(x)
return res
def add_path(tdict, path):
"""
:param tdict: a dictionary representing a argument tree
:param path: a path list
:return: a dictionary
"""
t = tdict
for step in path[:-2]:
try:
t = t[step]
except KeyError:
t[step] = {}
t = t[step]
t[path[-2]] = path[-1]
return tdict
def is_set(tdict, path):
"""
:param tdict: a dictionary representing a argument tree
:param path: a path list
:return: True/False if the value is set
"""
t = tdict
for step in path:
try:
t = t[step]
except KeyError:
return False
if t is not None:
return True
return False
def get_attr(tdict, path):
t = tdict
for step in path:
t = t[step]
return t
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