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view framework/env/param/restore.lua @ 29:0b7e87f2dc91
add trace.debug_traceback() function
It inserts a traceback into the trace debug log. Usefull on development of unknown code.
It inserts a traceback into the trace debug log. Usefull on development of unknown code.
| author | Daniel Poelzleithner <poelzi@poelzi.org> |
|---|---|
| date | Mon Sep 20 15:29:23 2010 +0200 (2010-09-20) |
| parents | 9fdfb27f8e67 |
| children |
line source
1 --[[--
2 param.restore()
4 Calling this function reverts the changes of param.exchange(...). It should not be called explicitly, but is used implicitly, if you pass an 'id' or 'params' option to execute.view{...} or execute.action{...}.
6 --]]--
8 function param.restore()
9 local saved = param._saved
10 local previous = saved[#saved]
11 saved[#saved] = nil
12 if previous == nil then
13 error("Tried to restore id and params without having exchanged it before.")
14 end
15 param._exchanged = previous
16 end