[Gambas-devel-svn] SF.net SVN: gambas:[5778] gambas/trunk/main/lib/data

[<tob...@us...>]

Revision: 5778
          http://sourceforge.net/p/gambas/code/5778
Author:   tobiasboe
Date:     2013-08-09 18:31:20 +0000 (Fri, 09 Aug 2013)
Log Message:
-----------
[GB.DATA]
* BUG: Fix possible bugs when updating an invalid Current.
* BUG: Really erase old elements instead of just marking them as Null to
  prevent (potential) information leaks.
* OPT: Current and the enumerators (internally) carry list global indices
  (LGI) which can be used as anchor points together with List.Count to speed
  up traversals (always taking the shortest way through the list).
* OPT: Remove workaround code related to an enumerator bug fixed in #5749.
* NEW: Expose List.Current as a virtual object representing the current list
  element which has Append() and Prepend() methods to manipulate the list
  not only around its head. This breaks backwards compatibility.
* NEW: List.Value is what List.Current has meant formerly.
* NEW: Add List.Current.Index and List.Index which are an absolute index of
  the current element into the list. These are guaranteed to be in bounds of
  [-List.Count; List.Count - 1]. Note that each non-negative index has an
  associated negative equivalent and vice versa. They work like the indices
  given to List._get().
* NEW: Add a List.AutoNormalize property which instructs the list to
  automatically make indices (like resulting from a calculation) fit into
  the List bounds preserving the sign of the given index. This effectively
  prevents any "Out of bounds" errors.
* NEW: Add List.MoveTo() to point Current to an index.
* NEW: List.Current.Is{First,Last,Valid} can be used to determine if Current
  is the first or last element of the list or if it is valid, respectively.

Modified Paths:
--------------
    gambas/trunk/main/lib/data/c_circular.c
    gambas/trunk/main/lib/data/c_circular.h
    gambas/trunk/main/lib/data/c_deque.c
    gambas/trunk/main/lib/data/c_deque.h
    gambas/trunk/main/lib/data/c_list.c
    gambas/trunk/main/lib/data/c_list.h
    gambas/trunk/main/lib/data/main.c

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