1 #!/usr/bin/env python 2 3 """ 4 List objects. 5 6 Copyright (C) 2015 Paul Boddie <paul@boddie.org.uk> 7 8 This program is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free Software 10 Foundation; either version 3 of the License, or (at your option) any later 11 version. 12 13 This program is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 15 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 16 details. 17 18 You should have received a copy of the GNU General Public License along with 19 this program. If not, see <http://www.gnu.org/licenses/>. 20 """ 21 22 from __builtins__.sequence import * 23 24 class list(object): 25 26 "Implementation of list." 27 28 def __init__(self, args=None): 29 30 "Initialise the list." 31 32 if args is not None: 33 self.extend(args) 34 35 def __new__(self): 36 # Reserve space for a fragment reference. 37 self._elements = None 38 39 def __getitem__(self, index): 40 41 "Return the item or slice specified by 'index'." 42 43 return _getitem(self, index) 44 45 def __contains__(self, value): pass 46 def __setitem__(self, index, value): pass 47 def __delitem__(self, index): pass 48 49 def __getslice__(self, start, end=None): 50 51 "Return a slice starting from 'start', with the optional 'end'." 52 53 return _getslice(self, start, end) 54 55 def __setslice__(self, start, end, slice): pass 56 def __delslice__(self, start, end): pass 57 def append(self, value): pass 58 def insert(self, i, value): pass 59 60 def extend(self, iterable): 61 62 "Extend the list with the contents of 'iterable'." 63 64 for i in iterable: 65 self.append(i) 66 67 def pop(self): pass 68 def reverse(self): pass 69 def sort(self, cmp=None, key=None, reverse=0): pass 70 def __len__(self): pass 71 def __add__(self, other): pass 72 def __iadd__(self, other): pass 73 def __str__(self): pass 74 75 def __bool__(self): 76 77 "Lists are true if non-empty." 78 79 return self.__len__() != 0 80 81 def __iter__(self): 82 83 "Return an iterator." 84 85 return listiterator(self) 86 87 # Special implementation methods. 88 89 def __get_single_item__(self, index): pass 90 91 # vim: tabstop=4 expandtab shiftwidth=4