CWEB and Java

Richard Walker

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Jan 20, 1997, 3:00:00 AM1/20/97

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DEK claims that CWEB will process Java (see Knuth's CWEB `home page').
But as far as I can see there's no way to turn off the outputting
of #line directives, which are most definitely NOT legal Java!

So what's the story?

Richard.
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Beirne Konarski

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Jan 26, 1997, 3:00:00 AM1/26/97

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Richard Walker wrote:
>
> DEK claims that CWEB will process Java (see Knuth's CWEB `home page').
> But as far as I can see there's no way to turn off the outputting
> of #line directives, which are most definitely NOT legal Java!
>
> So what's the story?
>

I had the same problem. I fixed this by making a makefile rule to
filter the #line directives out of the CWEB output. This means that
errors referencing line numbers don't work, but this hasn't been too
much of a problem.

Beirne

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Benedikt Stockebrand

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Jan 26, 1997, 3:00:00 AM1/26/97

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ric...@cs.anu.edu.au (Richard Walker) writes:

> DEK claims that CWEB will process Java (see Knuth's CWEB `home page').
> But as far as I can see there's no way to turn off the outputting
> of #line directives, which are most definitely NOT legal Java!
>
> So what's the story?

Don't know, I don't use CWEB. But as a workaround, pipe the CWEB
output through

sed '/^#line/d'

for now. I'd be surprised if CWEB didn't have an option to disable
#line directives though.

Ben

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Marc van Leeuwen

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Jan 27, 1997, 3:00:00 AM1/27/97

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In article <87ybdg4...@devnull.ruhr.de>, Benedikt Stockebrand

<bene...@devnull.ruhr.de> writes:
|> ric...@cs.anu.edu.au (Richard Walker) writes:
|>
|> > DEK claims that CWEB will process Java (see Knuth's CWEB `home page').
|> > But as far as I can see there's no way to turn off the outputting
|> > of #line directives, which are most definitely NOT legal Java!
|>

CWEB does _not_ have such an option, but CWEBx does (option -l to CTANGLE).
This does not mean that I claim that CWEBx works well with Java, because I
do not know that language well enough, so I simply cannot tell. What I do
know is that Knuth's claim of applicabilitiy of CWEB to Java was not
accompanied by _any_ changes to CWEB (I checked this, since I like to keep
CWEBx fully compatible with CWEB).

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