Lua C Return problem
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- Subject: Lua C Return problem
- From: "Rodrigo Araújo" <alf.rodrigo@...>
- Date: Wed, 9 Jan 2008 15:03:40 -0300
Hi there,
Here at work I need to write a lua function (A) that returns another lua function (B) which returns itself unless it gets nil arguments. It's like:
function A(teste)
function B(m,n)
if(m and n) then
return B
else
return
end
end
return A
end
I know how to do it using Lua, but in face of some decisions in here, it must be written inside a class of C++. This way, I've been using the library lunar.h which I found on this post
http://lua-users.org/wiki/CppBindingWithLunar at the lua-users wiki.
This said, my approach was to first write function B inside the class and then function A, both returning function B, which came out this way:
int B(lua_State *L){
int m,n;
if(strcmp(luaL_typename(L,1),"number") == 0){
m = (int)luaL_checknumber(L,1);
n = (int)luaL_checknumber(L,2);
}
else{
lua_pushcfunction(L,drawer);
return 1;
}
}
int A(lua_State *L){
char* teste;
teste = (char*)lua_tostring(L,1);
lua_pushcfunction(L,drawer);
return 1;
}
This code inside the class gives the following error:
In member function 'int Classe::B(lua_State*)':
317: error: argument of type 'int (Classe::)(lua_State*)' does not match 'int (*)(lua_State*)'
In member function 'int Classe::A(lua_State*)':
327: error: argument of type 'int (Classe::)(lua_State*)' does not match 'int (*)(lua_State*)'
Lines 317 and 327 are the lines in which I call lua_pushcfunction. So, how should I do it? Is it possible to do this?
Thanks in advance,
Rodrigo Araujo