When my code is executing my trace_function set using set_trace_func how
do I get the parameter names of the function that is being traced? Say
for example I had a function
def myFunc(firstName, secondName, age)
do whatever 1
do whatever 2
do whatever 3
end
and my trace function has been called for a line execution event for "do
whatever 2". I can get the filename and line number from the binding.
How do I get the parameter names?
I've spent all this afternoon trying to do this, examining the Ruby
source, but can't work it out. Hope someone can help me, or tell me it
can't be done
AFAIK, There is no official way to get names of method parameters. But you can try this:
def m(a,b)
end
tracer = lambda do |*args|
p eval("local_variables", args[4]) if args[0] == 'call'
end
set_trace_func tracer
m(1, 2)
Cheers,
Kent.
···
On Dec 11, 2004, at 1:47 PM, Stephen Kellett wrote:
Hi folks,
When my code is executing my trace_function set using set_trace_func how
do I get the parameter names of the function that is being traced? Say
for example I had a function
def myFunc(firstName, secondName, age)
do whatever 1
do whatever 2
do whatever 3
end
and my trace function has been called for a line execution event for "do
whatever 2". I can get the filename and line number from the binding.
How do I get the parameter names?
I've spent all this afternoon trying to do this, examining the Ruby
source, but can't work it out. Hope someone can help me, or tell me it
can't be done
"Stephen Kellett" <snail@objmedia.demon.co.uk> schrieb im Newsbeitrag
news:VrZ6HmAe+zuBFw+o@objmedia.demon.co.uk...
Hi folks,
When my code is executing my trace_function set using set_trace_func how
do I get the parameter names of the function that is being traced? Say
for example I had a function
def myFunc(firstName, secondName, age)
do whatever 1
do whatever 2
do whatever 3
end
and my trace function has been called for a line execution event for "do
whatever 2". I can get the filename and line number from the binding.
How do I get the parameter names?
I've spent all this afternoon trying to do this, examining the Ruby
source, but can't work it out. Hope someone can help me, or tell me it
can't be done
I believe you can't other than patching the Ruby interpreter to add an
argument to the block invoked for tracing.
I think what you are saying is that when it is "call", local variables actually has a copy of the parameters, even though at a subsequent "line" - say the next statement executed - the local variables may hold more data items. Hadn't thought about it that way.
Thanks
Stephen
···
In message <AA21DE54-4C00-11D9-B79B-000A95C700E8@bellsouth.net>, Kent Sibilev <ksibilev@bellsouth.net> writes
AFAIK, There is no official way to get names of method parameters. But you can try this:
def m(a,b)
end
tracer = lambda do |*args|
p eval("local_variables", args[4]) if args[0] == 'call'
end
