1-- trace calls
2-- example: lua -ltrace-calls bisect.lua
3
4local level=0
5
6local function hook(event)
7 local t=debug.getinfo(3)
8 io.write(level," >>> ",string.rep(" ",level))
9 if t~=nil and t.currentline>=0 then io.write(t.short_src,":",t.currentline," ") end
10 t=debug.getinfo(2)
11 if event=="call" then
12  level=level+1
13 else
14  level=level-1 if level<0 then level=0 end
15 end
16 if t.what=="main" then
17  if event=="call" then
18   io.write("begin ",t.short_src)
19  else
20   io.write("end ",t.short_src)
21  end
22 elseif t.what=="Lua" then
23-- table.foreach(t,print)
24  io.write(event," ",t.name or "(Lua)"," <",t.linedefined,":",t.short_src,">")
25 else
26 io.write(event," ",t.name or "(C)"," [",t.what,"] ")
27 end
28 io.write("\n")
29end
30
31debug.sethook(hook,"cr")
32level=0
33