Re: Lua debug hooks

[Michal Kolodziejczyk <miko@...>]

On 28.02.2012 02:22, Josh Klint wrote:
> I am not sure what this means, but the hook doesn't seem to get called
> in the manner I expect.  If I had a script like below, I would expect
> the hook to be called after executing each line:
> local a = 1 --hook executed!
> local b = a + 1 --hook executed!
> b = b + 2 --hook executed!
> 
> Is the functionality I want supported in Lua?  Thanks.

Works for me:
$ cat test.lua
function cb(event, nr)
  print('HOOK:'..event, nr)
end
debug.sethook(cb, 'l')
local a = 1 --hook executed!
local b = a + 1 --hook executed!
b = b + 2 --hook executed!

$ lua test.lua
HOOK:line	5
HOOK:line	6
HOOK:line	7

Check for yourself at http://www.lua.org/cgi-bin/demo (you may wish to
call debug.sethook() as the last line)

Regards,
miko