webmcp
annotate framework/env/param/restore.lua @ 0:9fdfb27f8e67
Version 1.0.0
| author | jbe/bsw |
|---|---|
| date | Sun Oct 25 12:00:00 2009 +0100 (2009-10-25) |
| parents | |
| children |
| rev | line source |
|---|---|
| jbe/bsw@0 | 1 --[[-- |
| jbe/bsw@0 | 2 param.restore() |
| jbe/bsw@0 | 3 |
| jbe/bsw@0 | 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{...}. |
| jbe/bsw@0 | 5 |
| jbe/bsw@0 | 6 --]]-- |
| jbe/bsw@0 | 7 |
| jbe/bsw@0 | 8 function param.restore() |
| jbe/bsw@0 | 9 local saved = param._saved |
| jbe/bsw@0 | 10 local previous = saved[#saved] |
| jbe/bsw@0 | 11 saved[#saved] = nil |
| jbe/bsw@0 | 12 if previous == nil then |
| jbe/bsw@0 | 13 error("Tried to restore id and params without having exchanged it before.") |
| jbe/bsw@0 | 14 end |
| jbe/bsw@0 | 15 param._exchanged = previous |
| jbe/bsw@0 | 16 end |