Hello Ben,
so you finished the while without problems?
For the if/else/else if, I think it would be something like this:
statement = IF LBRACK expression RBRACK LCUR statements RCUR optelse
| ... other statements ...
optelse = elseif
| else
|
elseif = ELSE IF LBRACK expression RBRACK LCUR statements RCUR optelse
else = ELSE LCUR statements RCUR
I haven't tried it, but something like this could work...
Dennis
comsatcat wrote:
> I actually figured out what I was trying to do... to clarify I was
> having issues with parsing a statement that looked like so:
>
> while(expression) {
> expressions
> }
>
> I've gotten a lot of the langage done and a processor written for
> parsing the AST. One thing I'm having trouble with is how to handle
> the equiv of an if else statement...
>
> in my parser I have a statement that looks for:
> if (expression) {
> statements
> }
>
> and
>
> if (expression) {
> statements
> } else {
> statements
> }
>
> My problem is how do I handle an else if statement since there can be
> an unlimited number of else if's.. ie:
>
> if(expression) {
> statements
> } else if (expression) {
> statements
> } else if (expression) {
> statements
> } else {
> statements
> }
>
> I'm not sure how I would put together the AST and determine which else
> if are related to which if statement.
>
> Let me know if that makes sense and if so if you have any ideas how to
> parse and process that.
>
> Thanks,
> Ben
>
>
> On Feb 16, 2009 12:22 AM, "D.Hendriks (Dennis)" <[email protected]
> <mailto:[email protected]>> wrote:
>
> Hello,
>
> > handle looping events
>
> > handle looping symantex in ply
>
> I don't really understand what you mean by "looping events"? Can
> you give an example of something with looping events that you
> would like to parse?
>
> Also, it's "semantics", not "symantex"...
>
> Dennis comsatcat wrote: > > Dennis, > > Thank you for all the
> feedback. I RTFM'ed a lot and h...
>
>
>
> >
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