OpenEuphoria

Re: request for 2.5

• Posted by Pete Lomax <petelomax at blueyonder.co.uk> Oct 15, 2004
• 581 views

On Thu, 14 Oct 2004 17:56:26 -0700, Derek Parnell
<guest at RapidEuphoria.com> wrote:

>Not trying to get picky, but what you've described would be more like
>enhancements to the debugger rather than trace().
True.
>The trace() call just starts the debugger running, it doesn't control 
>what goes on once it has started.
Hopefully being picky in an innoffensive way, actually, it does:

with trace
integer i
trace(1)
	i=1
trace(0)
	i=2
trace(1)
	i=3

The trace window jumps from line 5 (trace(0)) to line 8 (i=3).
I have to admit that I cannot remember ever coding trace(0), but it
would probably cure a lot of the problems I experience, thanks.

I also have an idea which I'll post separately.
>
>I agree, and I think so does RDS, that the debugger can do with some
>serious improvements. Hopefully once v2.5 is out the door, RDS can
>start that process.
>
>But back to trace(). One technique I've used is a type of conditional
>trace. This is where I start the debugger only when certain conditions
>have been met.
>
>Eg.:
>  trace( (id = 17) and (length(fldx) > 0 ) )
>  trace( equal(getenv("DEBUG"), "rtnx") )

Just a small note of caution: be careful that the expression always
evaluates to 1 or 0. For example:

if index then	-- ie index is not zero
		trace(1)
	else
		trace(0)
	end if

is not the same as	trace(index), use trace(index!=0) instead.

Regards,
Pete