Re: Lua Pre-compiler / Lua side userdata

[Andre de Leiradella <aleirade@...>]

Can't you create a table of events? Your example would become

PostEvent(Events.ButtonClick)

You can assign numbers to entries in the Events table so 
Events.ButtonClick will translate to an number (one that fits in a 
float) which you can easily compare in the C side.

Cheers,

Andre

Chris Gagnon wrote:
> I'm come to a situation, where to maintain readability for script 
> writers but ensure fast code i want to parse lua code before it goes to 
> the compiler.
> The issue i foresee is that I'll essentially want to create user data in 
> the Lua script.
>
> So an example in Lua:
> PostEvent("ButtonClick")
> very readable, however strings...yuck
>
> I want to create a hash of that string for speed:
> PostEvent( 0xABC45678 )
>
> All is good you might think, however the gotcha is that that we compile 
> lua using a 32-bit float to represent numbers.
> Internally that float will lose the precision and hence mess up the 32 
> bit constant.
>
> Basically I'm looking for any suggestions, as i don't have any great 
> ideas that don't add needless run time overhead.
>
> Thanks,
> Chris