| """A more or less complete user-defined wrapper around list objects.""" |
| |
| import collections |
| |
| class UserList(collections.MutableSequence): |
| def __init__(self, initlist=None): |
| self.data = [] |
| if initlist is not None: |
| # XXX should this accept an arbitrary sequence? |
| if type(initlist) == type(self.data): |
| self.data[:] = initlist |
| elif isinstance(initlist, UserList): |
| self.data[:] = initlist.data[:] |
| else: |
| self.data = list(initlist) |
| def __repr__(self): return repr(self.data) |
| def __lt__(self, other): return self.data < self.__cast(other) |
| def __le__(self, other): return self.data <= self.__cast(other) |
| def __eq__(self, other): return self.data == self.__cast(other) |
| def __ne__(self, other): return self.data != self.__cast(other) |
| def __gt__(self, other): return self.data > self.__cast(other) |
| def __ge__(self, other): return self.data >= self.__cast(other) |
| def __cast(self, other): |
| if isinstance(other, UserList): return other.data |
| else: return other |
| def __cmp__(self, other): |
| return cmp(self.data, self.__cast(other)) |
| __hash__ = None # Mutable sequence, so not hashable |
| def __contains__(self, item): return item in self.data |
| def __len__(self): return len(self.data) |
| def __getitem__(self, i): return self.data[i] |
| def __setitem__(self, i, item): self.data[i] = item |
| def __delitem__(self, i): del self.data[i] |
| def __getslice__(self, i, j): |
| i = max(i, 0); j = max(j, 0) |
| return self.__class__(self.data[i:j]) |
| def __setslice__(self, i, j, other): |
| i = max(i, 0); j = max(j, 0) |
| if isinstance(other, UserList): |
| self.data[i:j] = other.data |
| elif isinstance(other, type(self.data)): |
| self.data[i:j] = other |
| else: |
| self.data[i:j] = list(other) |
| def __delslice__(self, i, j): |
| i = max(i, 0); j = max(j, 0) |
| del self.data[i:j] |
| def __add__(self, other): |
| if isinstance(other, UserList): |
| return self.__class__(self.data + other.data) |
| elif isinstance(other, type(self.data)): |
| return self.__class__(self.data + other) |
| else: |
| return self.__class__(self.data + list(other)) |
| def __radd__(self, other): |
| if isinstance(other, UserList): |
| return self.__class__(other.data + self.data) |
| elif isinstance(other, type(self.data)): |
| return self.__class__(other + self.data) |
| else: |
| return self.__class__(list(other) + self.data) |
| def __iadd__(self, other): |
| if isinstance(other, UserList): |
| self.data += other.data |
| elif isinstance(other, type(self.data)): |
| self.data += other |
| else: |
| self.data += list(other) |
| return self |
| def __mul__(self, n): |
| return self.__class__(self.data*n) |
| __rmul__ = __mul__ |
| def __imul__(self, n): |
| self.data *= n |
| return self |
| def append(self, item): self.data.append(item) |
| def insert(self, i, item): self.data.insert(i, item) |
| def pop(self, i=-1): return self.data.pop(i) |
| def remove(self, item): self.data.remove(item) |
| def count(self, item): return self.data.count(item) |
| def index(self, item, *args): return self.data.index(item, *args) |
| def reverse(self): self.data.reverse() |
| def sort(self, *args, **kwds): self.data.sort(*args, **kwds) |
| def extend(self, other): |
| if isinstance(other, UserList): |
| self.data.extend(other.data) |
| else: |
| self.data.extend(other) |
