Re: Calling C functions from Lua 5.2
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- Subject: Re: Calling C functions from Lua 5.2
- From: Duncan Cross <duncan.cross@...>
- Date: 2012年4月25日 08:32:53 +0100
On Tue, Apr 24, 2012 at 9:31 PM, James Urso <JUrso@walchem.com> wrote:
> (...)
>
> int luaopen_testHarness(lua_State *L)
> {
> luaL_newlib (L, testHarness); /* register C functions with Lua */
> return 1;
> }
>
> (...)
>
> Is there something I can do so that I don’t need to have the “th.” In front
> of the call to the buildMessage function in the C library?
To populate the global table with your module's functions instead of
creating a new table and populating that, look into using
luaL_setfuncs() directly in your luaopen function instead of
luaL_newlib(). Something like this (untested):
int luaopen_testHarness(lua_State *L)
{
// get global table onto the stack
lua_pushglobaltable(L);
// populate the table on top of the stack with module functions
luaL_setfuncs(L, testHarness, 0);
// since we don't have a module table, don't return anything
// require() will return true instead
return 0;
}
-Duncan