Re: Possible to store a reference to a lua table in an ffi struct?
- From: Evan Wies <evan@xxxxxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Sat, 22 Mar 2014 17:50:36 -0400
On 3/22/14, 2:16 AM, demetri wrote:
One bit of elaboration: if you care you can make a C struct tableref
{int uid;} and attach a metatype to it to give you some syntactic
convenience: mystruct.member_tableref.foo will look up "foo" through
the __index method of the tableref's metatype (i.e. looking up the
table through uid2tbl and then getting tbl["foo"]).
Demetri
Using that same technique, you can store just the
vector<string>-replacement table in the metatable. The downside of this
approach is that you will need a different metatype/metatable for each
instance (unless the intention is to share this vector<string> among
among instances, i.e. a C++ static class member).
For example:
t = ffi.metatype( "struct { int a, b, c; }", { __index = { vstr = {} } })
foo = t()
foo.vstr[#foo.vstr+1] = "string1"
-Evan
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