style cleanup

This commit is contained in:
Chris Danford
2005-02-01 07:50:26 +00:00
parent d6c33c96d6
commit 275edd909b
+88 -83
View File
@@ -24,89 +24,93 @@ extern "C"
template <typename T>
struct RegType
{
const char *name;
int (*mfunc)(T *p, lua_State *L);
const char *name;
int (*mfunc)(T *p, lua_State *L);
};
template <typename T>
class Luna
{
typedef struct { T *pT; } userdataType;
typedef struct { T *pT; } userdataType;
public:
static void Register(lua_State *L) {
lua_newtable(L);
int methods = lua_gettop(L);
luaL_newmetatable(L, s_className);
int metatable = lua_gettop(L);
// store method table in globals so that
// scripts can add functions written in Lua.
lua_pushstring(L, s_className);
lua_pushvalue(L, methods);
lua_settable(L, LUA_GLOBALSINDEX);
lua_pushliteral(L, "__metatable");
lua_pushvalue(L, methods);
lua_settable(L, metatable); // hide metatable from Lua getmetatable()
lua_pushliteral(L, "__index");
lua_pushvalue(L, methods);
lua_settable(L, metatable);
lua_pushliteral(L, "__tostring");
lua_pushcfunction(L, tostring_T);
lua_settable(L, metatable);
// fill method table with methods from class T
for (unsigned i=0; i<s_pvMethods->size(); i++ )
static void Register(lua_State *L)
{
const MyRegType *l = &(*s_pvMethods)[i];
lua_pushstring(L, l->name);
lua_pushlightuserdata(L, (void*)l);
lua_pushcclosure(L, thunk, 1);
lua_settable(L, methods);
}
lua_pop(L, 2); // drop metatable and method table
}
// get userdata from Lua stack and return pointer to T object
static T *check(lua_State *L, int narg) {
userdataType *ud =
static_cast<userdataType*>(luaL_checkudata(L, narg, s_className));
if(!ud) luaL_typerror(L, narg, s_className);
return ud->pT; // pointer to T object
}
lua_newtable(L);
int methods = lua_gettop(L);
luaL_newmetatable(L, s_className);
int metatable = lua_gettop(L);
// store method table in globals so that
// scripts can add functions written in Lua.
lua_pushstring(L, s_className);
lua_pushvalue(L, methods);
lua_settable(L, LUA_GLOBALSINDEX);
lua_pushliteral(L, "__metatable");
lua_pushvalue(L, methods);
lua_settable(L, metatable); // hide metatable from Lua getmetatable()
lua_pushliteral(L, "__index");
lua_pushvalue(L, methods);
lua_settable(L, metatable);
lua_pushliteral(L, "__tostring");
lua_pushcfunction(L, tostring_T);
lua_settable(L, metatable);
// fill method table with methods from class T
for (unsigned i=0; i<s_pvMethods->size(); i++ )
{
const MyRegType *l = &(*s_pvMethods)[i];
lua_pushstring(L, l->name);
lua_pushlightuserdata(L, (void*)l);
lua_pushcclosure(L, thunk, 1);
lua_settable(L, methods);
}
lua_pop(L, 2); // drop metatable and method table
}
// get userdata from Lua stack and return pointer to T object
static T *check(lua_State *L, int narg)
{
userdataType *ud =
static_cast<userdataType*>(luaL_checkudata(L, narg, s_className));
if(!ud) luaL_typerror(L, narg, s_className);
return ud->pT; // pointer to T object
}
private:
// member function dispatcher
static int thunk(lua_State *L) {
// stack has userdata, followed by method args
T *obj = check(L, 1); // get 'self', or if you prefer, 'this'
lua_remove(L, 1); // remove self so member function args start at index 1
// get member function from upvalue
MyRegType *l = static_cast<MyRegType*>(lua_touserdata(L, lua_upvalueindex(1)));
return (*(l->mfunc))(obj,L); // call member function
}
// member function dispatcher
static int thunk(lua_State *L)
{
// stack has userdata, followed by method args
T *obj = check(L, 1); // get 'self', or if you prefer, 'this'
lua_remove(L, 1); // remove self so member function args start at index 1
// get member function from upvalue
MyRegType *l = static_cast<MyRegType*>(lua_touserdata(L, lua_upvalueindex(1)));
return (*(l->mfunc))(obj,L); // call member function
}
public:
// create a new T object and
// push onto the Lua stack a userdata containing a pointer to T object
static int Push(lua_State *L, T* p ) {
userdataType *ud = static_cast<userdataType*>(lua_newuserdata(L, sizeof(userdataType)));
ud->pT = p; // store pointer to object in userdata
luaL_getmetatable(L, s_className); // lookup metatable in Lua registry
lua_setmetatable(L, -2);
return 1; // userdata containing pointer to T object
}
// create a new T object and
// push onto the Lua stack a userdata containing a pointer to T object
static int Push(lua_State *L, T* p )
{
userdataType *ud = static_cast<userdataType*>(lua_newuserdata(L, sizeof(userdataType)));
ud->pT = p; // store pointer to object in userdata
luaL_getmetatable(L, s_className); // lookup metatable in Lua registry
lua_setmetatable(L, -2);
return 1; // userdata containing pointer to T object
}
typedef RegType<T> MyRegType;
typedef vector<MyRegType> RegTypeVector;
static RegTypeVector *s_pvMethods;
static void CreateMethodsVector()
{
if(s_pvMethods==NULL)
@@ -114,22 +118,23 @@ public:
}
private:
static const char s_className[];
static int tostring_T (lua_State *L) {
char buff[32];
userdataType *ud = static_cast<userdataType*>(lua_touserdata(L, 1));
T *obj = ud->pT;
sprintf(buff, "%p", obj);
lua_pushfstring(L, "%s (%s)", s_className, buff);
return 1;
}
static int tostring_T (lua_State *L)
{
char buff[32];
userdataType *ud = static_cast<userdataType*>(lua_touserdata(L, 1));
T *obj = ud->pT;
sprintf(buff, "%p", obj);
lua_pushfstring(L, "%s (%s)", s_className, buff);
return 1;
}
};
#define LUA_REGISTER_CLASS( T ) \
const char Luna##T<T>::s_className[] = #T; \
Luna##T<T>::RegTypeVector* Luna##T<T>::s_pvMethods = NULL; \
static Luna##T<T> registera; \
const char Luna##T<T>::s_className[] = #T; \
Luna##T<T>::RegTypeVector* Luna##T<T>::s_pvMethods = NULL; \
static Luna##T<T> registera; \
void T::PushSelf( lua_State *L ) { Luna##T<T>::Push( L, this ); }
#define ADD_METHOD( method_name ) \