[antlr-interest] Please - can someone help me out?

[Geir Ove Skjaervik]

--- In antlr-interest at yahoogroups.com, "Geir Ove Skjaervik" 
<geiroves at o...> wrote:
> 
> 
> Hello,
> 
> I hand-coded my own lexer & parser for a simple c-like language I 
> wrote some 10 years ago. I used a stack machine to execute the 
> compiled code. I also wrote a debugger for the same language.
> 
> I am now in the process of creating a similar language and it's 
> debugger. I decided to use ANTLR because it supports both Java and 
> C#.
> 
> It's a long time since I done this now, so go easy on me :-) I 
> understand that I can use an autmatically generated AST and walk 
> it's tree to execute the code instead of using a stack machine. 
> However, I have a HARD time finding examples on how this is done 
> e.g. for function declarations and calls. (abritrary number of 
> parameters). The only thing I have found so far is CHAD, here:
> 
> http://www1.cs.columbia.edu/~sedwards/classes/2003/w4115f/final-
> reports/CHAD.pdf
> 
> Appendix B page 56. shows the chad.g file
> 
> Looking at how function declarations and calls is handled walking 
> the ChadWalker (p. 100) it looks VERY complex, in fact MUCH more 
> complex than generating code for a Stack Machine! It also looks 
> complex to DEBUG in case of errors!
> 
> Can anyone advise me here:
> 
> What's the easiest way to execute my code? Use a Stack Machine or 
> Walk an auto-genrated AST? Remember, I also need to write a 
debugger 
> for the language
> 
> nd please go easy on the terminology as I am an ANTLR newbie, and 
> haven't worked with parsers for 10+ years.
> 
> And to the ANTLR people: More examples on this would have been 
nice.
> 
> Geir Ove





 
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