def load_base(cls, base_name, all_bases, all_mixins):
previous_bases = []
base = {}
while base_name is not None:
if base_name in previous_bases:
raise ValueError("Cyclic bases detected: %s -> %s" % (' -> '.join(previous_bases), base_name))
previous_bases.append(base_name)
base.pop('base', None)
this_base = all_bases[base_name]
if 'mixins' in this_base:
mixins = cls.load_mixins(this_base['mixins'], all_mixins)
mixins.pop('base', None)
this_base = dict_merge(this_base, mixins)
base = dict_merge(this_base, base)
base_name = base.get('base')
return base
def load_mixins(cls, mixin_list, all_mixins):
if isinstance(mixin_list, str):
## Single mixin can just be a string. Convert to single item list.
mixin_list = [mixin_list]
mixin = {}
for mixin_name in mixin_list:
mixin = dict_merge(mixin, all_mixins[mixin_name])
return mixin
def parse_comic(cls, info, all_bases, all_mixins):
base = {}
mixin = {}
if 'base' in info:
base = cls.load_base(info['base'], all_bases, all_mixins)
if 'mixins' in info:
mixin = cls.load_mixins(info['mixins'], all_mixins)
return dict_merge(base, mixin, info)