[antlr-interest] Re: (in)sanity check
idontwantanidwith2000init
idontwantanidwith2000init at yahoo.com
Mon Apr 19 13:46:28 PDT 2004
I think you'll end up wasting time then saving time.
How would you make a (in)sanity check to the code produced?
I think c++ is platform depended so even if you think that these are
the same functions the odds are against you.
For example:
What would the following result on c++ and Java working on pentium 4?
int x = 4000;
x >> 33
I guess that in java you got a zero, right?
What did you get in c++?
--- In antlr-interest at yahoogroups.com, "ljw10001" <ljw1001 at h...>
wrote:
> I'm about to begin a project to port 400K LOC of C++ code to
Java.
> To the greatest extent possible, we want to do a line by line port
> and, if possible I would like to automate some part of that effort.
>
> What I have in mind is to use ANTLR/Sorcerer to do a rough
> translation.
>
> If I'm reading the various documents, articles, etc. correctly,
there
> is a C++ grammar available that ANTLR can use to create a parse
tree
> and also a Sorcerer description for Java that can read a
(different)
> parse tree and generate java code. Presumably the first tree could
be
> mapped to the second, or we could modify the Sorcerer description
by
> hand to use the tree generated from the C++ source.
>
> I'm not expecting the result to compile. In fact I would be happy
to
> output C++ with some of the code selectively replaced by Java
> equivalents. Anything that would reduce the amount of manual
> translation noticably would be useful.
>
> So, am I completely insane to attempt this with ANTLR?
Suggestions
> for better ways to approach the problem would be greatly
appreciated.
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