Re: is setfenv useless?
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- Subject: Re: is setfenv useless?
- From: PA <petite.abeille@...>
- Date: Mon, 6 Mar 2006 07:07:54 +0100
On Mar 06, 2006, at 04:35, mr. Aleph wrote:
local aFunction = function( aName )
return ( "%s! Yes, we can!" ):format( aName )
end
local aFunctionCopy = loadstring( string.dump( aFunction ) )
This trick won't help you with cfunctions. And require is a cfunction.
This is getting a bit convoluted...
local _require = require
local anEnvironment = { require = _require }
setmetatable( anEnvironment, { __index = _G } )
function require( aName )
print( "my very own require", ( "%q" ):format( aName ) )
return require( aName )
end
setfenv( require, anEnvironment )
print( require )
print( require( "table" ) )
local aRequireCopy = loadstring( string.dump( require ) )
setfenv( aRequireCopy, anEnvironment )
print( aRequireCopy )
print( aRequireCopy( "table" ) )
> function: 0x10ff60
> my very own require "table"
> table: 0x101b60
> function: 0x1127d0
> my very own require "table"
> table: 0x101b60
Cheers
--
PA, Onnay Equitursay
http://alt.textdrive.com/