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Source code for galaxy.util.odict

"""
Ordered dictionary implementation.
"""

from six.moves import UserDict
dict_alias = dict


[docs]class odict(UserDict): """ http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/107747 This dictionary class extends UserDict to record the order in which items are added. Calling keys(), values(), items(), etc. will return results in this order. """
[docs] def __init__( self, dict=None ): item = dict self._keys = [] if isinstance(item, dict_alias): UserDict.__init__( self, item ) else: UserDict.__init__( self, None ) if isinstance(item, list): for (key, value) in item: self[key] = value
def __delitem__( self, key ): UserDict.__delitem__( self, key ) self._keys.remove( key ) def __setitem__( self, key, item ): UserDict.__setitem__( self, key, item ) if key not in self._keys: self._keys.append( key )
[docs] def clear( self ): UserDict.clear( self ) self._keys = []
[docs] def copy(self): new = odict() new.update( self ) return new
[docs] def items( self ): return zip( self._keys, self.values() )
[docs] def keys( self ): return self._keys[:]
[docs] def popitem( self ): try: key = self._keys[-1] except IndexError: raise KeyError( 'dictionary is empty' ) val = self[ key ] del self[ key ] return ( key, val )
[docs] def setdefault( self, key, failobj=None ): if key not in self._keys: self._keys.append( key ) return UserDict.setdefault( self, key, failobj )
[docs] def update( self, dict ): for ( key, val ) in dict.items(): self.__setitem__( key, val )
[docs] def values( self ): return map( self.get, self._keys )
[docs] def iterkeys( self ): return iter( self._keys )
[docs] def itervalues( self ): for key in self._keys: yield self.get( key )
[docs] def iteritems( self ): for key in self._keys: yield key, self.get( key )
def __iter__( self ): for key in self._keys: yield key
[docs] def reverse( self ): self._keys.reverse()
[docs] def insert( self, index, key, item ): if key not in self._keys: self._keys.insert( index, key ) UserDict.__setitem__( self, key, item )