改造Lua的debug.traceback() 让其显示栈上所有的局部变量
改造Lua的debug.traceback() 让其显示栈上所有的局部变量
- function tracebackex()
- local ret = ""
- local level = 2
- ret = ret .. "stack traceback:\n"
- while true do
- --get stack info
- local info = debug.getinfo(level, "Sln")
- if not info then break end
- if info.what == "C" then -- C function
- ret = ret .. tostring(level) .. "\tC function\n"
- else -- Lua function
- ret = ret .. string.format("\t[%s]:%d in function `%s`\n", info.short_src, info.currentline, info.name or "")
- end
- --get local vars
- local i = 1
- while true do
- local name, value = debug.getlocal(level, i)
- if not name then break end
- ret = ret .. "\t\t" .. name .. " =\t" .. tostringex(value, 3) .. "\n"
- i = i + 1
- end
- level = level + 1
- end
- return ret
- end
- function tostringex(v, len)
- if len == nil then len = 0 end
- local pre = string.rep('\t', len)
- local ret = ""
- if type(v) == "table" then
- if len > 5 then return "\t{ ... }" end
- local t = ""
- for k, v1 in pairs(v) do
- t = t .. "\n\t" .. pre .. tostring(k) .. ":"
- t = t .. tostringex(v1, len + 1)
- end
- if t == "" then
- ret = ret .. pre .. "{ }\t(" .. tostring(v) .. ")"
- else
- if len > 0 then
- ret = ret .. "\t(" .. tostring(v) .. ")\n"
- end
- ret = ret .. pre .. "{" .. t .. "\n" .. pre .. "}"
- end
- else
- ret = ret .. pre .. tostring(v) .. "\t(" .. type(v) .. ")"
- end
- return ret
- end
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