if 0 {
Preludium (from tcl'ers chatroom)
msw er, any way to get a quick log of functions along with their arguments & return vals as they're called ?
msw but only for a subset of all called procs .. like pls show me the args & results of all 'expr' and 'lindex' in this interpreter ?
suchenwi You might try execution traces.
miguel yes - or else 'rename expr _expr; proc expr args {lappend ::log info level0; eval expr $args}'
msw Hmm exec traces are too verbose... I like miguel's suggestion :)
suchenwi proc expr args {lappend ::log info level0; set res expr $args; lappend ::log $res; return $res}
msw Seems like a token for the wiki :>
miguel oops : eval _expr $args, or get an infinite recursion:o
Code }
namespace eval Simpletracer {
variable log
variable procs
namespace export watch forget watched results
}
namespace eval Simpletracer::traced {}
# don't trace the following:
# o lindex o lappend
# o return o uplevel
# o set
proc Simpletracer::watch args {
variable procs
foreach a $args {
if {[catch {rename $a ::Simpletracer::traced::$a} msg]} then {
puts stderr "Error tracing $a: $msg"
continue
}
proc ::$a args {
set inf [info level 0]
set cmd ::Simpletracer::traced::[lindex $inf 0]
lappend ::Simpletracer::log $inf
set res [uplevel 1 $cmd $args]
lappend ::Simpletracer::log $res
return $res
}
lappend procs $a
}
}
proc Simpletracer::forget args {
variable procs
foreach a $args {
if {[lsearch $procs $a] == -1} then {
puts stderr "$a ain't traced!"
continue
}
if {[catch {rename $a {}; rename ::Simpletracer::traced::$a ::$a} msg]} then {
puts stderr "untracing $a failed: $msg"
}
}
}
proc Simpletracer::watched args {
variable procs
return $procs
}
proc Simpletracer::results args {
variable log
return $log
}if 0 {
% namespace import Simpletracer::*
% watch expr
% expr 1 + 1
2
% expr 1+1
2
% results
{expr 1 + 1} 2 {expr 1+1} 2
% forget expr
% expr 1+1
2
% results
{expr 1 + 1} 2 {expr 1+1} 2Thanks RS & miguel!
}