1 #!/usr/bin/env python 2 3 """ 4 List objects. 5 6 Copyright (C) 2015, 2016 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__.iterator import listiterator 23 from __builtins__.sequence import _getitem, _getslice 24 25 class list(object): 26 27 "Implementation of list." 28 29 def __init__(self, args=None): 30 31 "Initialise the list." 32 33 if args is not None: 34 self.extend(args) 35 36 def __new__(self): 37 # Reserve space for a fragment reference. 38 self._elements = None 39 40 def __getitem__(self, index): 41 42 "Return the item or slice specified by 'index'." 43 44 return _getitem(self, index) 45 46 def __contains__(self, value): pass 47 def __setitem__(self, index, value): pass 48 def __delitem__(self, index): pass 49 50 def __getslice__(self, start, end=None): 51 52 "Return a slice starting from 'start', with the optional 'end'." 53 54 return _getslice(self, start, end) 55 56 def __setslice__(self, start, end, slice): pass 57 def __delslice__(self, start, end): pass 58 def append(self, value): pass 59 def insert(self, i, value): pass 60 61 def extend(self, iterable): 62 63 "Extend the list with the contents of 'iterable'." 64 65 for i in iterable: 66 self.append(i) 67 68 def pop(self): pass 69 def reverse(self): pass 70 def sort(self, cmp=None, key=None, reverse=0): pass 71 def __len__(self): pass 72 def __add__(self, other): pass 73 def __iadd__(self, other): pass 74 def __str__(self): pass 75 76 def __bool__(self): 77 78 "Lists are true if non-empty." 79 80 return self.__len__() != 0 81 82 def __iter__(self): 83 84 "Return an iterator." 85 86 return listiterator(self) 87 88 # Special implementation methods. 89 90 def __get_single_item__(self, index): pass 91 92 # vim: tabstop=4 expandtab shiftwidth=4