void dt_lua_register_type_callback_type_typeid(lua_State* L,const char* type_name,lua_CFunction index, lua_CFunction newindex,const char* struct_type_name)
{
luaL_getmetatable(L,type_name); // gets the metatable since it's supposed to exist
luaL_getsubtable(L,-1,"__get");
luaL_getsubtable(L,-2,"__set");
if(!index && !newindex)
{
index = lautoc_struct_index;
newindex = lautoc_struct_newindex;
}
const char* member = luaA_struct_next_member_name_typeid(L,luaA_type_find(struct_type_name),LUAA_INVALID_MEMBER_NAME);
while(member != LUAA_INVALID_MEMBER_NAME)
{
lua_pushnumber(L,luaA_type_find(struct_type_name));
lua_pushcclosure(L,index,1);
lua_setfield(L,-3,member);
if(newindex)
{
lua_pushnumber(L,luaA_type_find(struct_type_name));
lua_pushcclosure(L,newindex,1);
lua_setfield(L,-2,member);
}
member = luaA_struct_next_member_name_typeid(L,luaA_type_find(struct_type_name),member);
}
lua_pop(L,3);
}
void dt_lua_register_type_callback_typeid(lua_State* L,const char* type_name,lua_CFunction index, lua_CFunction newindex,...)
{
luaL_getmetatable(L,type_name); // gets the metatable since it's supposed to exist
luaL_getsubtable(L,-1,"__get");
luaL_getsubtable(L,-2,"__set");
va_list key_list;
va_start(key_list,newindex);
const char* key = va_arg(key_list,const char*);
while(key)
{
lua_pushcfunction(L,index);
lua_setfield(L,-3,key);
if(newindex)
{
lua_pushcfunction(L,newindex);
}
else
{
lua_pushnil(L);
}
lua_setfield(L,-2,key);
key = va_arg(key_list,const char*);
}
va_end(key_list);
lua_pop(L,3);
}
LUAMOD_API int luaopen_package (lua_State *L) {
/* create table CLIBS to keep track of loaded C libraries */
luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS);
lua_createtable(L, 0, 1); /* metatable for CLIBS */
lua_pushcfunction(L, gctm);
lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */
lua_setmetatable(L, -2);
/* create `package' table */
luaL_newlib(L, pk_funcs);
createsearcherstable(L);
#if defined(LUA_COMPAT_LOADERS)
lua_pushvalue(L, -1); /* make a copy of 'searchers' table */
lua_setfield(L, -3, "loaders"); /* put it in field `loaders' */
#endif
lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */
/* set field 'path' */
setpath(L, "path", LUA_PATHVERSION, LUA_PATH, LUA_PATH_DEFAULT);
/* set field 'cpath' */
setpath(L, "cpath", LUA_CPATHVERSION, LUA_CPATH, LUA_CPATH_DEFAULT);
/* store config information */
lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
lua_setfield(L, -2, "config");
/* set field `loaded' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_setfield(L, -2, "loaded");
/* set field `preload' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
lua_setfield(L, -2, "preload");
lua_pushglobaltable(L);
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */
luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */
lua_pop(L, 1); /* pop global table */
return 1; /* return 'package' table */
}
void dt_lua_register_type_callback_stack_typeid(lua_State* L,const char* type_name,const char* name)
{
luaL_getmetatable(L,type_name); // gets the metatable since it's supposed to exist
luaL_getsubtable(L,-1,"__get");
luaL_getsubtable(L,-2,"__set");
lua_pushvalue(L,-4);
lua_pushcclosure(L,type_const_index,1);
lua_setfield(L,-3,name);
lua_pop(L,4);
}
void dt_lua_type_register_type(lua_State *L, luaA_Type type_id, const char *name)
{
luaL_getmetatable(L, luaA_typename(L, type_id)); // gets the metatable since it's supposed to exist
luaL_getsubtable(L, -1, "__get");
lua_pushvalue(L, -3);
lua_setfield(L, -2, name);
lua_pop(L, 1);
luaL_getsubtable(L, -1, "__set");
lua_pushvalue(L, -3);
lua_setfield(L, -2, name);
lua_pop(L, 3);
}
void CMLuaScript::Unload()
{
if (status == Loaded)
{
lua_rawgeti(L, LUA_REGISTRYINDEX, unloadRef);
if (lua_isfunction(L, -1))
luaM_pcall(L);
lua_pushnil(L);
lua_rawsetp(L, LUA_REGISTRYINDEX, this);
status = None;
}
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_pushnil(L);
lua_setfield(L, -2, moduleName);
lua_pop(L, 1);
KillModuleIcons(id);
KillModuleSounds(id);
KillModuleMenus(id);
KillModuleHotkeys(id);
KillObjectEventHooks(this);
KillObjectServices(this);
}
static void
thread_openlibs (lua_State *L, unsigned int loadlibs)
{
const char *const *libnamep;
int i;
thread_openlib(L, "_G", luaopen_base);
thread_openlib(L, LUA_LOADLIBNAME, luaopen_package);
#if LUA_VERSION_NUM < 502
lua_getglobal(L, "package");
lua_getfield(L, -1, "preload");
lua_remove(L, -2);
#else
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
#endif
for (i = 0, libnamep = stdlib_names; *libnamep; ++i, ++libnamep) {
const char *name = *libnamep;
lua_CFunction func = stdlib_funcs[i];
if ((loadlibs & (1 << i)))
thread_openlib(L, name, func);
else
thread_setfield(L, name, func);
}
lua_pop(L, 1); /* remove package.preload table */
}
static int int_pushfunc(lua_State *L, luaA_Type type_id, const void *cin)
{
luaL_getmetatable(L, luaA_typename(L, type_id));
luaL_getsubtable(L, -1, "__values");
int singleton = *(int *)cin;
lua_pushnumber(L, singleton);
lua_gettable(L, -2);
if(lua_isnoneornil(L, -1))
{
lua_pop(L, 1);
int *udata = lua_newuserdata(L, sizeof(int));
*udata = singleton;
luaL_setmetatable(L, luaA_typename(L, type_id));
lua_pushinteger(L, singleton);
// warning : no uservalue
lua_pushvalue(L, -2);
lua_settable(L, -4);
if(luaL_getmetafield(L, -1, "__init"))
{
lua_pushvalue(L, -2); // the new alocated object
lua_pushlightuserdata(L, (void *)cin); // forced to cast..
lua_call(L, 2, 0);
}
}
lua_remove(L, -2); //__values
lua_remove(L, -2); // metatable
return 1;
}
static int gpointer_pushfunc(lua_State *L, luaA_Type type_id, const void *cin)
{
gpointer singleton = *(gpointer *)cin;
if(!singleton) {
lua_pushnil(L);
return 1;
}
luaL_getsubtable(L, LUA_REGISTRYINDEX, "dt_lua_gpointer_values");
lua_pushlightuserdata(L, singleton);
lua_gettable(L, -2);
if(lua_isnoneornil(L, -1))
{
lua_pop(L, 1);
gpointer *udata = lua_newuserdata(L, sizeof(gpointer));
lua_newtable(L);
lua_setuservalue(L, -2);
*udata = singleton;
luaL_setmetatable(L, luaA_typename(L, type_id));
lua_pushlightuserdata(L, singleton);
lua_pushvalue(L, -2);
lua_settable(L, -4);
if(luaL_getmetafield(L, -1, "__init"))
{
lua_pushvalue(L, -2); // the new alocated object
lua_pushlightuserdata(L, (void *)cin); // forced to cast..
lua_call(L, 2, 0);
}
}
lua_remove(L, -2); //dt_lua_gpointer_values
return 1;
}
int main(int argc, char** argv) {
lua_State* L = luaL_newstate();
luaL_openlibs(L);
luaL_requiref(L, "sqlite3", luaopen_sqlite3, 1);
lua_pop(L, 1); /* remove lib */
/* add open functions from 'preloadedlibs' into 'package.preload' table */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
lua_pushcfunction(L, luaopen_sqlite3);
lua_setfield(L, -2, "sqlite3");
lua_pop(L, 1); /* remove _PRELOAD table */
/* luaL_dofile(L, "test.lua"); */
luaL_loadfile(L, "test.lua");
lua_call(L, 0, LUA_MULTRET);
lua_close(L);
return EXIT_SUCCESS;
}
void context_lua_t::lua_init_env(lua_State *L, int32_t envc)
{
if (envc <= 0) return;
const char* path = lua_tostring(L, -envc);
const char* cpath = lua_tostring(L, -envc + 1);
if (path == NULL && cpath == NULL) {
lua_pop(L, envc);
return;
}
lua_checkstack(L, 3);
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_getfield(L, -1, LUA_LOADLIBNAME); /* _LOADED[name] */
if (lua_istable(L, -1)) {
if (path) {
lua_pushvalue(L, -envc - 2);
lua_setfield(L, -2, "path");
}
if (cpath) {
lua_pushvalue(L, -envc - 1);
lua_setfield(L, -2, "cpath");
}
}
lua_pop(L, envc + 2);
return;
}
void context_lua_t::lua_load_env(lua_State *L, char* env[])
{
lua_checkstack(L, 3);
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_getfield(L, -1, LUA_LOADLIBNAME); /* _LOADED[name] */
if (lua_istable(L, -1)) {
char** envp = env;
lua_getfield(L, -1, "path");
size_t path_len;
const char* lua_path = lua_tolstring(L, -1, &path_len);
if (lua_path != NULL && path_len > 0) {
char* lua_path_env = (char*)nl_malloc(path_len + 10);
strcpy(lua_path_env, "LUA_PATH=");
strcpy(lua_path_env + 9, lua_path);
*envp++ = lua_path_env;
}
lua_pop(L, 1);
lua_getfield(L, -1, "cpath");
size_t cpath_len;
const char* lua_cpath = lua_tolstring(L, -1, &cpath_len);
if (lua_cpath != NULL && cpath_len > 0) {
char* lua_cpath_env = (char*)nl_malloc(cpath_len + 11);
strcpy(lua_cpath_env, "LUA_CPATH=");
strcpy(lua_cpath_env + 10, lua_cpath);
*envp++ = lua_cpath_env;
}
lua_pop(L, 3);
return;
}
lua_pop(L, 2);
return;
}
/*
** create table CLIBS to keep track of loaded C libraries,
** setting a finalizer to close all libraries when closing state.
*/
static void createclibstable (lua_State *L) {
luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS); /* create CLIBS table */
lua_createtable(L, 0, 1); /* create metatable for CLIBS */
lua_pushcfunction(L, gctm);
lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */
lua_setmetatable(L, -2);
}
inline virtual void get_symbol(state_type state, const std::string& name) override
{
luaL_getsubtable(state, LUA_REGISTRYINDEX, "_LOADED");
lua_getfield(state, -1, name_.c_str());
lua_getfield(state, -1, name.c_str());
lua_remove(state, -2);
lua_remove(state, -2);
}
LUAMOD_API int luaopen_upackage(lua_State *L)
{
int i;
/* create new type _LOADLIB */
luaL_newmetatable(L, "_LOADLIB");
lua_pushcfunction(L, gctm);
lua_setfield(L, -2, "__gc");
/* create `package' table */
luaL_newlib(L, pk_funcs);
/* create 'searchers' table */
lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0);
/* fill it with pre-defined searchers */
for(i=0; searchers[i] != NULL; i++)
{
lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */
lua_pushcclosure(L, searchers[i], 1);
lua_rawseti(L, -2, i+1);
}
#if defined(LUA_COMPAT_LOADERS)
lua_pushvalue(L, -1); /* make a copy of 'searchers' table */
lua_setfield(L, -3, "loaders"); /* put it in field `loaders' */
#endif
lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */
/* set field 'path' */
setpath(L, "path", LUA_PATHVERSION, LUA_PATH, LUA_PATH_DEFAULT);
/* set field 'cpath' */
setpath(L, "cpath", LUA_CPATHVERSION, LUA_CPATH, LUA_CPATH_DEFAULT);
/* store config information */
push_utf8_string(L, LUA_DIRSEP L"\n" LUA_PATH_SEP L"\n" LUA_PATH_MARK L"\n"
LUA_EXEC_DIR L"\n" LUA_IGMARK L"\n", -1);
lua_setfield(L, -2, "config");
/* set field `loaded' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_setfield(L, -2, "loaded");
/* set field `preload' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
lua_setfield(L, -2, "preload");
lua_pushglobaltable(L);
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */
luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */
lua_pop(L, 1); /* pop global table */
return 1; /* return 'package' table */
}
static int test_subtable (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 1);
if (luaL_getsubtable(L, 1, "xxx")) {
lua_pushliteral(L, "oldtable");
} else {
lua_pushliteral(L, "newtable");
}
return 2;
}
inline virtual bool bind(state_type state) override
{
if(! binded_)
{
lua_newtable(state);
}
else
{
luaL_getsubtable(state, LUA_REGISTRYINDEX, "_LOADED");
lua_getfield(state, -1, name_.c_str());
}
for(auto& pair : bindables_)
{
const std::string& name = pair.first;
bindable_data& data = pair.second;
bindable_ptr_type& bindable = data.bindable;
if(!data.status && bindable->bind(state))
{
data.status = true;
lua_setfield(state, -2, name.c_str());
}
}
if(!binded_)
{
luaL_getsubtable(state, LUA_REGISTRYINDEX, "_LOADED");
lua_pushvalue(state, -2);
lua_setfield(state, -2, name_.c_str());
lua_pop(state, 1);
lua_pushvalue(state, -1);
binded_ = true;
}
else
{
lua_pop(state, 2);
}
return true;
}
/*
** stripped-down 'require'. Calls 'openf' to open a module,
** registers the result in 'package.loaded' table and, if 'glb'
** is true, also registers the result in the global table.
** Leaves resulting module on the top.
*/
LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
lua_CFunction openf, int glb) {
lua_pushcfunction(L, openf);
lua_pushstring(L, modname); /* argument to open function */
lua_call(L, 1, 1); /* open module */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_pushvalue(L, -2); /* make copy of module (call result) */
lua_setfield(L, -2, modname); /* _LOADED[modname] = module */
lua_pop(L, 1); /* remove _LOADED table */
if (glb) {
lua_pushvalue(L, -1); /* copy of 'mod' */
lua_setglobal(L, modname); /* _G[modname] = module */
}
}
bool llib_load(list<string> & libs, lua_State *L, const string &path) {
void *handle;
lua_CFunction fnc_call;
// int (*fnc_call)(lua_State *);
char *error;
std::string str_lib_name;
std::string str_fnc_name;
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
for (list<string>::iterator it = libs.begin(); it != libs.end(); it++) {
str_lib_name = path + "/lib" + *it + ".so";
handle = dlopen(str_lib_name.c_str(), RTLD_LOCAL | RTLD_LAZY);
if (!handle) {
std::cerr << "Error: " << dlerror() << std::endl;
return false;
}
dlerror(); /* Clear any existing error */
str_fnc_name = "luaopen_" + *it;
fnc_call = (lua_CFunction) dlsym(handle, str_fnc_name.c_str());
if (fnc_call == NULL) {
std::cerr << "Error: Could not load: " << str_fnc_name << std::endl << dlerror() << std::endl;
return false;
}
// luaL_requiref(L, "monitor", &luaopen_monlib, 1);
// (*fnc_call)(L);
Debug(5) << str_fnc_name;
luaL_requiref(L, it->c_str(), fnc_call, 1);
lua_pop(L, 1);
lua_pushcfunction(L, fnc_call);
lua_setfield(L, -2, it->c_str());
dlclose(handle);
}
// for (list<string>::iterator it = libs.begin(); it != libs.end(); it++) {
//
// lua_pushcfunction(L, fnc_call);
// lua_setfield(L, -2, it->c_str());
// }
lua_pop(L, 1);
return true;
}
LUAMOD_API int luaopen_package (lua_State *L) {
createclibstable(L);
luaL_newlib(L, pk_funcs); /* create 'package' table */
createsearcherstable(L);
/* set paths */
setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT);
setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
/* store config information */
lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
lua_setfield(L, -2, "config");
/* set field 'loaded' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_setfield(L, -2, "loaded");
/* set field 'preload' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
lua_setfield(L, -2, "preload");
lua_pushglobaltable(L);
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */
luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */
lua_pop(L, 1); /* pop global table */
return 1; /* return 'package' table */
}
LUALIB_API void luaL_openlibs (lua_State *L) {
const luaL_Reg *lib;
/* call open functions from 'loadedlibs' and set results to global table */
for (lib = loadedlibs; lib->func; lib++) {
luaL_requiref(L, lib->name, lib->func, 1);
lua_pop(L, 1); /* remove lib */
}
/* add open functions from 'preloadedlibs' into 'package.preload' table */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
for (lib = preloadedlibs; lib->func; lib++) {
lua_pushcfunction(L, lib->func);
lua_setfield(L, -2, lib->name);
}
lua_pop(L, 1); /* remove _PRELOAD table */
}
void dt_lua_register_type_callback_list_typeid(lua_State* L,const char* type_name,lua_CFunction index, lua_CFunction newindex,const char**list)
{
luaL_getmetatable(L,type_name); // gets the metatable since it's supposed to exist
luaL_getsubtable(L,-1,"__get");
luaL_getsubtable(L,-2,"__set");
const char** key = list;
while(*key)
{
lua_pushcfunction(L,index);
lua_setfield(L,-3,*key);
if(newindex)
{
lua_pushcfunction(L,newindex);
}
else
{
lua_pushnil(L);
}
lua_setfield(L,-2,*key);
key ++;
}
lua_pop(L,3);
}
int udata_addmethods(lua_State *L, const char* mt, const luaL_Reg* methods)
/* Adds methods to the metatable mt */
{
if(luaL_getmetatable(L, mt)!=LUA_TTABLE)
return luaL_error(L, "cannot find metatable '%s'", mt);
if(methods)
{
/* add methods */
luaL_getsubtable(L, -1, "__index");
luaL_setfuncs(L, methods, 0);
lua_pop(L, 1);
}
lua_pop(L, 1);
return 0;
}
void dt_lua_type_gpointer_alias_type(lua_State*L,luaA_Type type_id,void* pointer,void* alias)
{
luaL_getsubtable(L, LUA_REGISTRYINDEX, "dt_lua_gpointer_values");
lua_pushlightuserdata(L, pointer);
lua_gettable(L, -2);
if(lua_isnoneornil(L, -1))
{
luaL_error(L,"Adding an alias to an unknown object for type %s",luaA_typename(L,type_id));
}
lua_pushlightuserdata(L,alias);
lua_insert(L,-2);
lua_settable(L,-3);
lua_pop(L,1);
}
/*
** stripped-down无装饰的 'require'. Calls 'openf' to open a module,
** registers the result in 'package.loaded' table and, if 'glb'
** is true, also registers the result in the global table.
** Leaves resulting module on the top.
** 没有装饰的"require",调用openf来打开模块,并且注册到package.loaded数组中,
** 如果glb为真,同时注册到全局数组中.
*/
LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
lua_CFunction openf, int glb) {
lua_pushcfunction(L, openf); //0x00603ac0
lua_pushstring(L, modname); /* argument to open function */
lua_call(L, 1, 1); /* open module */ //0x00603ad0
//此时openf和modname已经出栈,生成的新table在原来openf处
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_pushvalue(L, -2); /* make copy of module (call result) */
lua_setfield(L, -2, modname); /* _LOADED[modname] = module */
lua_pop(L, 1); /* remove _LOADED table */
if (glb) { //0x00603ac8
lua_pushvalue(L, -1); /* copy of 'mod' */
//对于多次调用luaL_requiref,全局注册表相应的键值会被最新的覆盖
lua_setglobal(L, modname); /* _G[modname] = module */
}
}
int udata_inherit(lua_State *L, const char *sub, const char *super)
/* Sets metatable(sub).__index = metatable(super)
*
* This way, if one accesses a field/method of a 'sub' object which is not defined in
* the 'sub' metatable, Lua searches for it in the 'super' metatable (i.e., the 'sub'
* type inherits from 'super').
*/
{
if(luaL_getmetatable(L, sub)!=LUA_TTABLE)
return luaL_error(L, "cannot find metatable '%s'", sub);
luaL_getsubtable(L, -1, "__index");
if(luaL_getmetatable(L, super)!=LUA_TTABLE)
return luaL_error(L, "cannot find metatable '%s'", super);
lua_setmetatable(L, -2);
lua_pop(L, 2);
return 0;
}
static int unknown_pushfunc(lua_State *L, luaA_Type type_id, const void *cin)
{
gpointer singleton = *(gpointer *)cin;
if(!singleton) {
lua_pushnil(L);
return 1;
}
luaL_getsubtable(L, LUA_REGISTRYINDEX, "dt_lua_gpointer_values");
lua_pushlightuserdata(L, singleton);
lua_gettable(L, -2);
if(lua_isnoneornil(L, -1))
{
return luaL_error(L,"Attempting to push a pointer of unknown type on the stack\n");
}
lua_remove(L, -2); //dt_lua_gpointer_values
return 1;
}
/*
** Stripped-down 'require': After checking "loaded" table, calls 'openf'
** to open a module, registers the result in 'package.loaded' table and,
** if 'glb' is true, also registers the result in the global table.
** Leaves resulting module on the top.
*/
LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
lua_CFunction openf, int glb) {
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_getfield(L, -1, modname); /* _LOADED[modname] */
if (!lua_toboolean(L, -1)) { /* package not already loaded? */
lua_pop(L, 1); /* remove field */
lua_pushcfunction(L, openf);
lua_pushstring(L, modname); /* argument to open function */
lua_call(L, 1, 1); /* call 'openf' to open module */
lua_pushvalue(L, -1); /* make copy of module (call result) */
lua_setfield(L, -3, modname); /* _LOADED[modname] = module */
}
lua_remove(L, -2); /* remove _LOADED table */
if (glb) {
lua_pushvalue(L, -1); /* copy of module */
lua_setglobal(L, modname); /* _G[modname] = module */
}
}
void dt_lua_type_gpointer_drop(lua_State*L, void* pointer)
{
luaL_getsubtable(L, LUA_REGISTRYINDEX, "dt_lua_gpointer_values");
lua_pushlightuserdata(L, pointer);
lua_gettable(L,-2);
gpointer *udata = (gpointer*)lua_touserdata(L,-1);
if(lua_isnil(L,-1)) return; // this table is weak, the object has been gc
*udata = NULL;
lua_pop(L,1);
lua_pushlightuserdata(L, pointer);
lua_pushnil(L);
lua_settable(L,-3);
lua_pop(L,1);
}
COMPAT53_API void luaL_requiref (lua_State *L, const char *modname,
lua_CFunction openf, int glb) {
luaL_checkstack(L, 3, "not enough stack slots available");
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
if (lua_getfield(L, -1, modname) == LUA_TNIL) {
lua_pop(L, 1);
lua_pushcfunction(L, openf);
lua_pushstring(L, modname);
lua_call(L, 1, 1);
lua_pushvalue(L, -1);
lua_setfield(L, -3, modname);
}
if (glb) {
lua_pushvalue(L, -1);
lua_setglobal(L, modname);
}
lua_replace(L, -2);
}