Changes made to JFLAP - Mar. 5, 2003
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JFLAP 4.0b3, 5 March 2003
FIXES
* The NPDA to CFG converter no longer places limits on the amount of
characters read from input.
* Problem with recognizing identical configurations in PDAs for simulation
of input fixed.
* Transitions with long labels don't have the labels drawn at noticably
different angles to the transition line.
* Dragging self loop transitions no longer causes movement of the transition
and associated states to happen in double time.
* An error that sometimes caused portions of an automaton to be drawn off
screen (especially self loop transitions) has been fixed.
* The useless production removal process no longer has the problem of some
useless productions remaining for some grammars.
* In SLR(1) parse table building, JFLAP would sometimes mistakenly identify
an item in the parse table as being "accept" when it should not have been;
this has been fixed.
FEATURES & OTHER NON-BUG CHANGES
* Automaton editors display scroll bars if a portion of an automaton is off
screen.
* When simulating input by stepping, PDA and FSA configurations will display
with not only remaining input, but show already processed input greyed out.
Existing output will scroll off as before in event of long inputs.
* Clarity of NFA to DFA feedback messages improved.
* LR(1) parse tables are now properly identified as SLR(1) parse tables.
* Added the ability to hide labels within a view. In an editor view, use
the attribute editor and right click in a blank area of the view where the
automaton is drawn. This will also work in any automaton view.
* Added a graph layout algorithm! In addition to giving the user the
ability to apply the layout algorithm to an automaton they are editing, the
layout algorithm is used in the background with many areas of JFLAP where
the tool creates states. The user's ability to apply the algorithm is
available in the same menu as for hiding labels; it is only available in
views where one can move states.
* The grammar table will display the lambda character in the right hand side
of lambda productions instead of just leaving the right hand side blank.
* Typing the lambda "!" character in the LL(1) parse table will be properly
displayed as the lambda character in the table.
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