static int auxresume (lua_State *L, lua_State *co, int narg) {
int status, stacks;
int ismain = lua_pushthread(L);
lua_pop(L, 1);
if (ismain) {
lua_pushliteral(L, "cannot call resume in main thread");
return -1; /* error flag */
}
if (!lua_checkstack(co, narg)) {
lua_pushliteral(L, "too many arguments to resume");
return -1; /* error flag */
}
if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) {
lua_pushliteral(L, "cannot resume dead coroutine");
return -1; /* error flag */
}
lua_xmove(L, co, narg);
context_lua_t *lctx = context_lua_t::lua_get_context(L);
while (((status = lua_resume(co, L, narg)) == LUA_YIELD) && lctx->yielding_up()) { /* can happen only when status == LUA_YIELD */
if ((stacks = lua_checkstack(L, LUA_MINSTACK)) && lua_isyieldable(L)) { /* reserve LUA_MINSTACK stack for resume result */
return lua_yieldk(L, 0, 0, coresume_continue); /* yield again! n(0) result to yield and ctx(0) is not allowed */
} else { /* lua_gettop(co) must be 0 since context_lua_t::lua_yield_send yield 0 result */
int yieldup_status = stacks ? NL_EYIELD : NL_ESTACKLESS;
lctx->yielding_finalize(NULL, yieldup_status);
lua_pushboolean(co, 0); /* stack on co must be enough since we have checked it at last yield */
lua_pushinteger(co, yieldup_status);
lua_pushnil(co);
lua_pushnil(co);
narg = 4;
}
}
if (status == LUA_OK || status == LUA_YIELD) {
int nres = lua_gettop(co);
if (!lua_checkstack(L, nres + 1)) {
lua_pop(co, nres); /* remove results anyway */
lua_pushliteral(L, "too many results to resume");
return -1; /* error flag */
}
lua_xmove(co, L, nres); /* move yielded values */
return nres;
} else {
lua_xmove(co, L, 1); /* move error message */
return -1; /* error flag */
}
}
int jass_call_closure(lua_State* L)
{
if (!is_gaming())
{
lua_pushnil(L);
return 1;
}
int result = jass_call_native_function(L, (const jass::func_value*)lua_tointeger(L, lua_upvalueindex(1)));
if (lua_isyieldable(L))
{
jass_vm_t* thread = get_jass_thread();
if (thread && thread->has_sleep)
{
thread->opcode -= jass::trampoline_size() / sizeof(jass::opcode);
return lua_yield(L, 0);
}
}
return result;
}
static int luaB_yieldable (lua_State *L) {
lua_pushboolean(L, lua_isyieldable(L));
return 1;
}
int jass_call_native_function(lua_State* L, const jass::func_value* nf, uintptr_t func_address)
{
LUA_PERFTRACE(kJassCall);
if (!lua_isyieldable(L) && nf->has_sleep())
{
printf("Wanring: %s is disable.\n", lua_tostring(L, lua_upvalueindex(1)));
lua_pushnil(L);
return 1;
}
size_t param_size = nf->get_param().size();
if ((int)param_size > lua_gettop(L))
{
lua_pushnil(L);
return 1;
}
jass::call_param param(param_size);
for (size_t i = 0; i < param_size; ++i)
{
jass::variable_type vt = nf->get_param()[i];
switch (vt)
{
case jass::TYPE_BOOLEAN:
param.push(i, jassbind::read_boolean(L, i + 1));
break;
case jass::TYPE_CODE:
param.push(i, jassbind::read_code(L, i + 1));
break;
case jass::TYPE_HANDLE:
param.push(i, jassbind::read_handle(L, i + 1));
break;
case jass::TYPE_INTEGER:
param.push(i, jassbind::read_integer(L, i + 1));
break;
case jass::TYPE_REAL:
param.push_real(i, jassbind::read_real(L, i + 1));
break;
case jass::TYPE_STRING:
param.push(i, lua_tostring(L, i + 1));
break;
default:
param.push(i, 0);
break;
}
}
if (func_address == 0) func_address = nf->get_address();
uintptr_t retval = 0;
if (runtime::catch_crash)
{
retval = safe_jass_call(L, func_address, param.data(), param_size);
}
else
{
retval = jass::call(func_address, param.data(), param_size);
}
if (nf->get_return() == jass::TYPE_STRING)
{
retval = get_jass_vm()->string_table->get(retval);
}
return jass_push(L, nf->get_return(), retval) ? 1 : 0;
}
