genericValidation.ValidationMetaClass Class Reference

Inheritance diagram for genericValidation.ValidationMetaClass:

Public Member Functions
def	__new__

Static Public Attributes
list	dicts = ["defaults"]
list	sets = ["mandatories", "optionals", "needpackages"]

Detailed Description

Definition at line 14 of file genericValidation.py.

Member Function Documentation

def genericValidation.ValidationMetaClass.__new__	(		cls,
			clsname,
			bases,
			dct
	)

Definition at line 17 of file genericValidation.py.

References update.

Referenced by SequenceTypes._ModuleSequenceType.copyAndExclude().

    def __new__(cls, clsname, bases, dct):
        for setname in cls.sets:
            if setname not in dct: dct[setname] = set()
            dct[setname] = set.union(dct[setname], *(getattr(base, setname) for base in bases if hasattr(base, setname)))

        for dictname in cls.dicts:
            if dictname not in dct: dct[dictname] = {}
            for base in bases:
                if not hasattr(base, dictname): continue
                newdict = getattr(base, dictname)
                for key in set(newdict) & set(dct[dictname]):
                    if newdict[key] != dct[dictname][key]:
                        raise ValueError("Inconsistent values of defaults[{}]: {}, {}".format(key, newdict[key], dct[dictname][key]))
                dct[dictname].update(newdict)

        for setname in cls.sets:      #e.g. removemandatories, used in preexistingvalidation
                                      #use with caution
            if "remove"+setname not in dct: dct["remove"+setname] = set()
            dct["remove"+setname] = set.union(dct["remove"+setname], *(getattr(base, "remove"+setname) for base in bases if hasattr(base, "remove"+setname)))

            dct[setname] -= dct["remove"+setname]

        return super(ValidationMetaClass, cls).__new__(cls, clsname, bases, dct)