On Fri, May 08, 2009 at 09:21:54AM +0200, Alexander Burger wrote:
> True. I'll better make it nesting, using a simple level counter.
Hm, thinking about it, I'm not so sure ...
A working solution would be
static int skip(int c) {
for (;;) {
if (Chr < 0)
return Chr;
while (Chr <= ' ') {
Env.get();
if (Chr < 0)
return Chr;
}
if (Chr != c)
return Chr;
Env.get();
if (c != '#' || Chr != '{') {
while (Chr != '\n') {
if (Chr < 0)
return Chr;
Env.get();
}
}
else {
int n = 1;
for (;;) { // #{block-comment}# from Kriangkrai Soatthiyanont
Env.get();
if (Chr < 0)
return Chr;
if (Chr == '}' && (Env.get(), Chr == '#') && !--n)
break;
if (Chr == '#' && (Env.get(), Chr == '{'))
++n;
}
}
Env.get();
}
}
BUT, I think this is not wise.
Because: If the commented text contains the pattern "#{" or "}#" in a
context where it is not relevant as a comment (e.g. in a symbol name or
a string), the nesting will break.
Now I understand why "/*" and "*/" in C don't nest. Shouldn't we better
stay with non-nesting block comments?
Cheers,
- Alex
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