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Diffstat (limited to '')
-rw-r--r-- | src/civetweb/src/third_party/lua-5.1.5/test/trace-globals.lua | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/civetweb/src/third_party/lua-5.1.5/test/trace-globals.lua b/src/civetweb/src/third_party/lua-5.1.5/test/trace-globals.lua new file mode 100644 index 000000000..295e670ca --- /dev/null +++ b/src/civetweb/src/third_party/lua-5.1.5/test/trace-globals.lua @@ -0,0 +1,38 @@ +-- trace assigments to global variables + +do + -- a tostring that quotes strings. note the use of the original tostring. + local _tostring=tostring + local tostring=function(a) + if type(a)=="string" then + return string.format("%q",a) + else + return _tostring(a) + end + end + + local log=function (name,old,new) + local t=debug.getinfo(3,"Sl") + local line=t.currentline + io.write(t.short_src) + if line>=0 then io.write(":",line) end + io.write(": ",name," is now ",tostring(new)," (was ",tostring(old),")","\n") + end + + local g={} + local set=function (t,name,value) + log(name,g[name],value) + g[name]=value + end + setmetatable(getfenv(),{__index=g,__newindex=set}) +end + +-- an example + +a=1 +b=2 +a=10 +b=20 +b=nil +b=200 +print(a,b,c) |