I have been researching online, going through
examples and working at this for the last couple of weeks but not been very
successful at finishing the last part of my requirements!
I have created a parser which takes inputs that
simple imperative programs (so it will accept assignments, if statements and
while statements if the syntax is correct).
I have got the JJT file sorted so that it dumps out
the nodes and the tokens inputted. I did this by editing the SimpleNode class to
store an image (I didn't used the MULTI option).
I need to be able to refer to the input tokens as
objects from the tree's data structure instead of just dumping them out. So I
need to be able to know what the LHS and RHS elements are.
So if the user types in:
a = b + 1
I need to
know that "a" is on the LHS from the root node, and "b + 1" is on the RHS. And
then "b + 1" can be broken up again to a LHS and RHS.
To do this I have added the VISITOR option and
tried to work on "jjtAccept" (not sure if I needed to to do what I need). I
believe I have to change the methods in SimpleNode but not sure which ones I
need to work on? I've tried using the "jjtGetChild" methods but not been
successful.
I can attached my JJT and SimpleNode file if
needed?
Getting quite worried now as I need to get this done fairly soon -
would greatly appreciate any help to get started on this.
Many Thanks,
Rahim.
