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- Subject: Re: Producing a value
- From: Duncan Cross <duncan.cross@...>
- Date: Wed, 20 Apr 2011 12:09:17 +0100
On Wed, Apr 20, 2011 at 10:09 AM, Marc Balmer <marc@msys.ch> wrote:
> Does the Lua C part call a metatable method when it produces a value of
> a variable?
>
> i.e, if I have a userdata value 'n', can I intercept somehow the operation
>
> a = n
>
> ? At the moment, this assigns the string 'n' to a.
>
>
Not in the general case - there is no way to intercept it for local
variables. If you only care about global variables, you could set a
metatable on the globals table and intercept access the same way you
would for any other table, using __index and __newindex metamethods.
-Duncan
