struct cell *
cell_new(lua_State *L, const char * mainfile) {
hive_getenv(L, "cell_map");
int cell_map = lua_absindex(L,-1); // cell_map
luaL_requiref(L, "cell.c", cell_lib, 0); // cell_map cell_lib
struct cell * c = cell_create();
c->L = L;
cell_touserdata(L, cell_map, c); // cell_map cell_lib cell_ud
lua_setfield(L, -2, "self"); // cell_map cell_lib
hive_getenv(L, "system_pointer");
struct cell * sys = lua_touserdata(L, -1); // cell_map cell_lib system_cell
lua_pop(L, 1);
if (sys) {
cell_touserdata(L, cell_map, sys);
lua_setfield(L, -2, "system");
}
lua_pop(L,2);
lua_pushlightuserdata(L, c);
hive_setenv(L, "cell_pointer");
int err = luaL_loadfile(L, mainfile);
if (err) {
printf("%d : %s\n", err, lua_tostring(L,-1));
lua_pop(L,1);
goto _error;
}
err = lua_pcall(L, 0, 0, 0);
if (err) {
printf("%d : %s\n", err, lua_tostring(L,-1));
lua_pop(L,1);
goto _error;
}
lua_pushcfunction(L, traceback); // upvalue 1
lua_pushcfunction(L, data_unpack); // upvalue 2
hive_getenv(L, "dispatcher"); // upvalue 3
if (!lua_isfunction(L, -1)) {
printf("set dispatcher first\n");
goto _error;
}
hive_getenv(L, "cell_map"); // upvalue 4
lua_pushcclosure(L, lcallback, 4);
return c;
_error:
scheduler_deletetask(L);
c->L = NULL;
cell_destroy(c);
return NULL;
}
/*! Create table "name" within table at index tindex */
static void subtable(lua_State *L, int tindex, const char *name, const char *mode) { //> [-0,+1,e]
int abs_tindex = lua_absindex(L, tindex);
lua_getfield(L, abs_tindex, name); // [-0,+1,e]
if (lua_isnil(L, -1)) { // [-0,+0,-]
lua_pop(L, 1); // pop(nil) // [-1,+0,-]
lua_checkstack(L, 3); // [-0,+0,v]
weaktable(L, mode); // pushes a table // [-0,+1,e]
lua_pushvalue(L, -1); // dup // [-0,+1,-]
rawsetfield(L, abs_tindex, name); // t[name] = table // [-1,+0,e]
}
} // leaves table on stack
/*
** ensure that stack[idx][fname] has a table and push that table
** into the stack
*/
LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) {
lua_getfield(L, idx, fname);
if (lua_istable(L, -1)) return 1; /* table already there */
else {
lua_pop(L, 1); /* remove previous result */
idx = lua_absindex(L, idx);
lua_newtable(L);
lua_pushvalue(L, -1); /* copy to be left at top */
lua_setfield(L, idx, fname); /* assign new table to field */
return 0; /* false, because did not find table there */
}
}
LUALIB_API void luaL_setfuncs(lua_State *L, const luaL_Reg *l, int nup) {
int i, t = lua_absindex(L, -1 - nup);
for (; l->name; l++) {
for (i = 0; i < nup; i++)
lua_pushvalue(L, -nup);
lua_pushcclosure(L, l->func, nup);
lua_setfield(L, t, l->name);
}
lua_pop(L, nup);
} /* luaL_setfuncs() */
static int lua_rl_isglobaltable(lua_State *L, int idx)
{
#if LUA_VERSION_NUM == 501
return lua_rawequal(L, idx, LUA_GLOBALSINDEX);
#else
idx = lua_absindex(L, idx);
lua_pushglobaltable(L);
int same = lua_rawequal(L, idx, -1);
lua_pop(L, 1);
return same;
#endif
}
void
l2dbus_callbackRef
(
lua_State* L,
int funcIdx,
int userIdx,
l2dbus_CallbackCtx* ctx
)
{
if ( funcIdx != L2DBUS_CALLBACK_NOREF_NEEDED )
{
funcIdx = lua_absindex(L, funcIdx);
}
if ( userIdx != L2DBUS_CALLBACK_NOREF_NEEDED )
{
userIdx = lua_absindex(L, userIdx);
}
if ( L2DBUS_CALLBACK_NOREF_NEEDED != funcIdx )
{
lua_pushvalue(L, funcIdx);
ctx->funcRef = luaL_ref(L, LUA_REGISTRYINDEX);
}
else
{
ctx->funcRef = LUA_NOREF;
}
if ( L2DBUS_CALLBACK_NOREF_NEEDED != userIdx )
{
lua_pushvalue(L, userIdx);
ctx->userRef = luaL_ref(L, LUA_REGISTRYINDEX);
}
else
{
ctx->userRef = LUA_NOREF;
}
}
static char* opt_get_string(lua_State *L, int idx, const char *name, int req, const char *err){
const char *value;
idx = lua_absindex(L, idx);
rawgets(L, idx, name);
value = lua_tostring(L, -1);
lua_pop(L, 1);
if(value) return (char*)value;
if(req){
lua_pushstring(L, err);
lua_error(L);
}
return 0;
}
// replaces the fifo ud by its uservalue on the stack
static keeper_fifo* prepare_fifo_access( lua_State* L, int idx)
{
keeper_fifo* fifo = (keeper_fifo*) lua_touserdata( L, idx);
if( fifo != NULL)
{
idx = lua_absindex( L, idx);
STACK_GROW( L, 1);
// we can replace the fifo userdata in the stack without fear of it being GCed, there are other references around
lua_getuservalue( L, idx);
lua_replace( L, idx);
}
return fifo;
}
// Expects: Function, followed by narg arguments, on top of the stack.
// Calls pcall with traceback error handler, removes error handler.
// Error is left on top of the stack.
// Returns the error code, and the stack index at which the return values start.
inline std::tuple<int, int>
pcall_helper(lua_State * L, int narg, int nret) noexcept {
PRIMER_ASSERT(lua_gettop(L) >= (1 + narg),
"Not enough arguments on stack for pcall!");
PRIMER_ASSERT(lua_isfunction(L, -1 - narg), "Missing function for pcall!");
primer::get_error_handler(L);
lua_insert(L, -2 - narg);
const int error_handler_index = lua_absindex(L, -2 - narg);
const int result_code = lua_pcall(L, narg, nret, error_handler_index);
lua_remove(L, error_handler_index);
return std::tuple<int, int>{result_code, error_handler_index};
}
inline int luaX_abs_index(lua_State* L, int index) {
#if LUA_VERSION_NUM+0 >= 502
return lua_absindex(L, index);
#else
if (index < 0) {
int top = lua_gettop(L);
if (top >= -index) {
return top + index + 1;
}
}
return index;
#endif
}
LUA_API void luaS_checkColor(lua_State *L, int p, float* x, float *y, float *z, float* w) {
p=lua_absindex(L,p);
luaL_checktype(L, p, LUA_TTABLE);
lua_rawgeti(L, p, 1);
*x = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 2);
*y = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 3);
*z = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 4);
*w = (float)lua_tonumber(L, -1);
lua_pop(L, 4);
}
static void update_on_definition(lua_State* L, int ct_usr, int ct_idx)
{
ct_usr = lua_absindex(L, ct_usr);
ct_idx = lua_absindex(L, ct_idx);
lua_pushlightuserdata(L, &to_define_key);
lua_rawget(L, ct_usr);
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop the nil */
/* {} */
lua_newtable(L);
/* {__mode='k'} */
lua_newtable(L);
lua_pushliteral(L, "k");
lua_setfield(L, -2, "__mode");
/* setmetatable({}, {__mode='k'}) */
lua_setmetatable(L, -2);
/* usr[TO_UPDATE_KEY] = setmetatable({}, {__mode='k'}) */
lua_pushlightuserdata(L, &to_define_key);
lua_pushvalue(L, -2);
lua_rawset(L, ct_usr);
/* leave the table on the stack */
}
/* to_update[ctype or cdata] = true */
lua_pushvalue(L, ct_idx);
lua_pushboolean(L, 1);
lua_rawset(L, -3);
/* pop the to_update table */
lua_pop(L, 1);
}
COMPAT53_API void lua_rotate (lua_State *L, int idx, int n) {
int n_elems = 0;
idx = lua_absindex(L, idx);
n_elems = lua_gettop(L)-idx+1;
if (n < 0)
n += n_elems;
if ( n > 0 && n < n_elems) {
luaL_checkstack(L, 2, "not enough stack slots available");
n = n_elems - n;
compat53_reverse(L, idx, idx+n-1);
compat53_reverse(L, idx+n, idx+n_elems-1);
compat53_reverse(L, idx, idx+n_elems-1);
}
}
LUA_API int luaS_checkVector3(lua_State *L, int p, float* x, float *y, float *z) {
p=lua_absindex(L,p);
if(lua_type(L,p)!=LUA_TTABLE)
return -1;
luaL_checktype(L, p, LUA_TTABLE);
lua_rawgeti(L, p, 1);
*x = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 2);
*y = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 3);
*z = (float)lua_tonumber(L, -1);
lua_pop(L, 3);
return 0;
}
int luaL_getsubtable (lua_State *L, int i, const char *name) {
int abs_i = lua_absindex(L, i);
luaL_checkstack(L, 3, "not enough stack slots");
lua_pushstring(L, name);
lua_gettable(L, abs_i);
if (lua_istable(L, -1))
return 1;
lua_pop(L, 1);
lua_newtable(L);
lua_pushstring(L, name);
lua_pushvalue(L, -2);
lua_settable(L, abs_i);
return 0;
}
int lua_compare (lua_State *L, int idx1, int idx2, int op) {
int result = 0;
switch (op) {
case LUA_OPEQ:
return lua_equal(L, idx1, idx2);
case LUA_OPLT:
return lua_lessthan(L, idx1, idx2);
case LUA_OPLE:
luaL_checkstack(L, 5, "not enough stack slots");
idx1 = lua_absindex(L, idx1);
idx2 = lua_absindex(L, idx2);
lua_pushvalue(L, idx1);
lua_pushvalue(L, idx2);
compat52_call_lua(L, compat52_compare_code,
sizeof(compat52_compare_code)-1, 2, 1);
result = lua_toboolean(L, -1);
lua_pop(L, 1);
return result;
default:
luaL_error(L, "invalid 'op' argument for lua_compare");
}
return 0;
}
CellSpec CellSpec::FromLuaTable(lua_State *l, int idx) {
const int table = lua_absindex(l, idx);
assert(lua_istable(l, table));
const int len = lua_rawlen(l, table);
std::vector<float> cellPercent(len);
for (int i = 0; i < len; i++) {
lua_rawgeti(l, table, i+1);
cellPercent[i] = luaL_checknumber(l, -1);
lua_pop(l, 1);
}
return CellSpec(cellPercent);
}
LUA_API int luaS_checkColor(lua_State *L, int p, float* x, float *y, float *z, float* w) {
p=lua_absindex(L,p);
if(lua_type(L,p)!=LUA_TTABLE)
return -1;
lua_rawgeti(L, p, 1);
*x = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 2);
*y = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 3);
*z = (float)lua_tonumber(L, -1);
lua_rawgeti(L, p, 4);
*w = (float)lua_tonumber(L, -1);
lua_pop(L, 4);
return 0;
}
// Get the value of the property with the name on the stack on position
// 'nameIndex'.
// Pushes the property value on the stack.
// Pre: nameIndex points to a string.
void
luaUqm_getProp(lua_State *luaState, int nameIndex) {
nameIndex = lua_absindex(luaState, nameIndex);
lua_getfield(luaState, LUA_REGISTRYINDEX, statePropRegistryKey);
// [-1] -> registry[statePropRegistrykey]
lua_pushvalue(luaState, nameIndex);
// [-2] -> registry[statePropRegistrykey]
// [-1] -> name
lua_gettable(luaState, -2);
// [-2] -> registry[statePropRegistrykey]
// [-1] -> registry[statePropRegistrykey][name]
lua_replace(luaState, -2);
// [-1] -> registry[statePropRegistrykey][name]
}
LUACLLIB_API int luaC_isclass(lua_State* L, int inx, const char* name /*= NULL*/)
{
int r = -1;
int ix = lua_absindex(L, inx);
lua_checkstack(L, 1);
if (name == NULL) {
lua_pushvalue(L, lua_upvalueindex(1));
if (!lua_isfunction(L, -1)) r = 0; // Not a class, assume in class closure not method.
} else {
get_class(L, name); //|CL|
}
r = luaC_istype(L, ix, r);
lua_pop(L, 1);
return r;
};
bool luaW_tolocation(lua_State *L, int index, map_location& loc) {
if (!lua_checkstack(L, LUA_MINSTACK)) {
return false;
}
if (lua_isnoneornil(L, index)) {
// Need this special check because luaW_tovconfig returns true in this case
return false;
}
vconfig dummy_vcfg = vconfig::unconstructed_vconfig();
index = lua_absindex(L, index);
if (lua_istable(L, index) || luaW_tounit(L, index) || luaW_tovconfig(L, index, dummy_vcfg)) {
map_location result;
int x_was_num = 0, y_was_num = 0;
lua_getfield(L, index, "x");
result.set_wml_x(lua_tonumberx(L, -1, &x_was_num));
lua_getfield(L, index, "y");
result.set_wml_y(lua_tonumberx(L, -1, &y_was_num));
lua_pop(L, 2);
if (!x_was_num || !y_was_num) {
// If we get here and it was userdata, checking numeric indices won't help
// (It won't help if it was a config either, but there's no easy way to check that.)
if (lua_isuserdata(L, index)) {
return false;
}
lua_rawgeti(L, index, 1);
result.set_wml_x(lua_tonumberx(L, -1, &x_was_num));
lua_rawgeti(L, index, 2);
result.set_wml_y(lua_tonumberx(L, -1, &y_was_num));
lua_pop(L, 2);
}
if (x_was_num && y_was_num) {
loc = result;
return true;
}
} else if (lua_isnumber(L, index) && lua_isnumber(L, index + 1)) {
// If it's a number, then we consume two elements on the stack
// Since we have no way of notifying the caller that we have
// done this, we remove the first number from the stack.
loc.set_wml_x(lua_tonumber(L, index));
lua_remove(L, index);
loc.set_wml_y(lua_tonumber(L, index));
return true;
}
return false;
}
void* push_cdata(lua_State* L, int ct_usr, const struct ctype* ct)
{
struct cdata* cd;
size_t sz = ct->is_reference ? sizeof(void*) : ctype_size(L, ct);
ct_usr = lua_absindex(L, ct_usr);
/* This is to stop valgrind from complaining. Bitfields are accessed in 8
* byte chunks so that the code doesn't have to deal with different access
* patterns, but this means that occasionally it will read past the end of
* the struct. As its not setting the bits past the end (only reading and
* then writing the bits back) and the read is aligned its a non-issue,
* but valgrind complains nonetheless.
*/
if (ct->has_bitfield) {
sz = ALIGN_UP(sz, 7);
}
cd = (struct cdata*) lua_newuserdata(L, sizeof(struct cdata) + sz);
*(struct ctype*) &cd->type = *ct;
memset(cd+1, 0, sz);
/* TODO: handle cases where lua_newuserdata returns a pointer that is not
* aligned */
#if 0
assert((uintptr_t) (cd + 1) % 8 == 0);
#endif
#if LUA_VERSION_NUM == 501
if (!ct_usr || lua_isnil(L, ct_usr)) {
push_upval(L, &niluv_key);
lua_setfenv(L, -2);
}
#endif
if (ct_usr && !lua_isnil(L, ct_usr)) {
lua_pushvalue(L, ct_usr);
lua_setuservalue(L, -2);
}
push_upval(L, &cdata_mt_key);
lua_setmetatable(L, -2);
if (!ct->is_defined && ct_usr && !lua_isnil(L, ct_usr)) {
update_on_definition(L, ct_usr, -1);
}
return cd+1;
}
static void mooa_print_table(lua_State *L, int index, int indent) {
index = lua_absindex(L, index);
lua_pushnil(L);
fprintf(stderr, "{\n");
while (lua_next(L, index) != 0) {
mooa_indent(indent + 2);
mooa_print_value(L, -2, indent + 2);
fprintf(stderr, " = ");
mooa_print_value(L, -1, indent + 2);
fprintf(stderr, ",\n");
/* removes 'value'; keeps 'key' for next iteration */
lua_pop(L, 1);
}
mooa_indent(indent);
fprintf(stderr, "}");
}
// Expects: Function, followed by narg arguments, on top of the stack.
// Calls lua_resume. If an error occurs, calls the traceback error handler,
// removes error handler. Error is left on top of the stack.
// Returns the error code, and the stack index at which the return values start.
inline std::tuple<int, int>
resume_helper(lua_State * L, int narg) noexcept {
PRIMER_ASSERT(lua_gettop(L) >= (narg),
"Not enough arguments on stack for resume!");
const int result_index = lua_absindex(L, -1 - narg);
const int result_code = lua_resume(L, nullptr, narg);
if ((result_code != LUA_OK) && (result_code != LUA_YIELD)) {
primer::get_error_handler(L);
lua_insert(L, -2);
lua_call(L, 1, 1);
}
return std::tuple<int, int>{result_code, result_index};
}
/*
* Convert a value from the given index into the lua stack to an nvpair, adding
* it to an nvlist with the given key.
*
* Values are converted as follows:
*
* string -> string
* number -> int64
* boolean -> boolean
* nil -> boolean (no value)
*
* Lua tables are converted to nvlists and then inserted. The table's keys
* are converted to strings then used as keys in the nvlist to store each table
* element. Keys are converted as follows:
*
* string -> no change
* number -> "%lld"
* boolean -> "true" | "false"
* nil -> error
*
* In the case of a key collision, an error is thrown.
*
* If an error is encountered, a nonzero error code is returned, and an error
* string will be pushed onto the Lua stack.
*/
static int
zcp_lua_to_nvlist_impl(lua_State *state, int index, nvlist_t *nvl,
const char *key, int depth)
{
/*
* Verify that we have enough remaining space in the lua stack to parse
* a key-value pair and push an error.
*/
if (!lua_checkstack(state, 3)) {
(void) lua_pushstring(state, "Lua stack overflow");
return (1);
}
index = lua_absindex(state, index);
switch (lua_type(state, index)) {
case LUA_TNIL:
fnvlist_add_boolean(nvl, key);
break;
case LUA_TBOOLEAN:
fnvlist_add_boolean_value(nvl, key,
lua_toboolean(state, index));
break;
case LUA_TNUMBER:
fnvlist_add_int64(nvl, key, lua_tonumber(state, index));
break;
case LUA_TSTRING:
fnvlist_add_string(nvl, key, lua_tostring(state, index));
break;
case LUA_TTABLE: {
nvlist_t *value_nvl = zcp_table_to_nvlist(state, index, depth);
if (value_nvl == NULL)
return (EINVAL);
fnvlist_add_nvlist(nvl, key, value_nvl);
fnvlist_free(value_nvl);
break;
}
default:
(void) lua_pushfstring(state,
"Invalid value type '%s' for key '%s'",
lua_typename(state, lua_type(state, index)), key);
return (EINVAL);
}
return (0);
}
Color4f Color4f::FromLuaTable(lua_State *l, int idx)
{
const int table = lua_absindex(l, idx);
assert(lua_istable(l, table));
LUA_DEBUG_START(l);
float r, g, b, a;
_get_number(l, table, "r", r);
_get_number(l, table, "g", g);
_get_number(l, table, "b", b);
_get_number(l, table, "a", a);
LUA_DEBUG_END(l, 0);
return Color4f(r, g, b, a);
}
Color4ub Color4ub::FromLuaTable(lua_State *l, int idx)
{
const int table = lua_absindex(l, idx);
assert(lua_istable(l, table));
LUA_DEBUG_START(l);
float r, g, b, a;
_get_number(l, table, "r", r);
_get_number(l, table, "g", g);
_get_number(l, table, "b", b);
if (!_get_number(l, table, "a", a)) a = 1.0f;
LUA_DEBUG_END(l, 0);
return Color4ub(r*255, g*255, b*255, a*255);
}
static void fetch_keys_from_metatable(lua_State * l, int metatable_index, const std::string & chunk, std::vector<std::string> & completion_list, bool only_functions) {
metatable_index = lua_absindex(l, metatable_index);
int original_height = lua_gettop(l);
int recursion_count = 0;
lua_pushvalue(l, metatable_index);
while(true) {
//First, determin whether where are stored the methods and attributes
lua_pushstring(l, "__index");
lua_rawget(l, -2); // meta, meta.__index
if (lua_istable(l, -1)) {
fetch_keys_from_table(l, -1, chunk, completion_list, only_functions);
if (lua_getmetatable(l, -1)) { // meta, meta.__index, meta^2
// Avoid the weird cases where the metatable contains itself.
if (!lua_compare(l, -1, metatable_index, LUA_OPEQ) && recursion_count < COMPLETION_RECURSION_LIMIT) {
recursion_count++;
lua_replace(l, original_height+1);
lua_pop(l, 1);
continue;
} else {
lua_settop(l, original_height);
throw RecursionLimit();
}
}
} else if (lua_iscfunction(l, -1)) {
// Deal with the specifics of LuaObject stuff.
lua_rawgeti(l, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS);
lua_pushstring(l, "type");
lua_rawget(l, original_height+1); // stuff, global, type
lua_rawget(l, -2); // stuff, global, methods
if (lua_istable(l, -1))
fetch_keys_from_table(l, -1, chunk, completion_list, only_functions);
lua_pop(l, 1); // Kick out the methods.
// Do the same for the parent
lua_pushstring(l, "parent");
lua_rawget(l, original_height+1);
if (!lua_isnil(l, -1)) {
lua_rawget(l, LUA_REGISTRYINDEX);
lua_replace(l, original_height+1);
lua_pop(l, 2);
continue;
}
}
break;
}
lua_settop(l, original_height);
}
static void fetch_keys_from_table(lua_State * l, int table_index, const std::string & chunk, std::vector<std::string> & completion_list, bool only_functions) {
table_index = lua_absindex(l, table_index);
lua_pushnil(l);
while(lua_next(l, table_index)) {
if (lua_type(l, -2) == LUA_TSTRING) {
std::string candidate(lua_tostring(l, -2));
bool attr = false;
if (candidate.substr(0, 12) == "__attribute_") {
candidate = candidate.substr(12, std::string::npos);
attr = true;
}
if (!only_functions || (lua_isfunction(l, -1) && !attr))
if (candidate.substr(0, chunk.size()) == chunk)
completion_list.push_back(candidate.substr(chunk.size()));
}
lua_pop(l, 1);
}
}
static Json _lua_to_json(lua_State *l, int idx)
{
int data = lua_absindex(l, idx);
switch (lua_type(l, data)) {
case LUA_TNIL:
return Json();
case LUA_TNUMBER:
return Json(lua_tonumber(l, data));
case LUA_TBOOLEAN:
return Json(lua_toboolean(l, data));
case LUA_TSTRING:
return Json(lua_tostring(l, data));
case LUA_TTABLE: {
// XXX handle arrays
Json object(Json::objectValue);
lua_pushnil(l);
while (lua_next(l, data)) {
const std::string key(luaL_checkstring(l, -2));
Json value(_lua_to_json(l, -1));
object[key] = value;
lua_pop(l, 1);
}
return object;
}
default:
luaL_error(l, "can't convert Lua type %s to JSON", lua_typename(l, lua_type(l, idx)));
return Json();
}
// shouldn't get here
assert(0);
return Json();
}
