lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]

Daurnimator <> writes:
>> Soooo what are the details?  How does the compiler implement this?
>> How would it impact performance?
>> Do you mean that, for instance, OP_GETTABLE would need a 4th argument
>> to pass in _ENV? ... and _every_ indexing operation (maybe the most
>> common operation in Lua bytecode) would then need to get and pass in
>> _ENV?
> A not too odd assumption to make is that the current environment (ie, _ENV)
> is always available for a function/VM instruction.

Maybe so, but in the 5.2 VM, access to _ENV always seems to be
explicit, not implicit ... _ENV is treated like any other local
variable in the top-level chunk.


XML is like violence.  If it doesn't solve your problem, you're not
using enough of it.