Command LuaUtils::ParseCommand(lua_State* L, const char* caller, int idIndex)
{
// cmdID
if (!lua_isnumber(L, idIndex)) {
luaL_error(L, "%s(): bad command ID", caller);
}
const int id = lua_toint(L, idIndex);
Command cmd(id);
// params
const int paramTable = (idIndex + 1);
if (!lua_istable(L, paramTable)) {
luaL_error(L, "%s(): bad param table", caller);
}
for (lua_pushnil(L); lua_next(L, paramTable) != 0; lua_pop(L, 1)) {
if (lua_israwnumber(L, -2)) { // avoid 'n'
if (!lua_isnumber(L, -1)) {
luaL_error(L, "%s(): bad param table entry", caller);
}
const float value = lua_tofloat(L, -1);
cmd.PushParam(value);
}
}
// options
ParseCommandOptions(L, caller, (idIndex + 2), cmd);
// XXX should do some sanity checking?
return cmd;
}
void LuaUtils::ParseCommandTable(lua_State* L, const char* caller,
int table, Command& cmd)
{
// cmdID
lua_rawgeti(L, table, 1);
if (!lua_isnumber(L, -1)) {
luaL_error(L, "%s(): bad command ID", caller);
}
cmd.id = lua_toint(L, -1);
lua_pop(L, 1);
// params
lua_rawgeti(L, table, 2);
if (!lua_istable(L, -1)) {
luaL_error(L, "%s(): bad param table", caller);
}
const int paramTable = lua_gettop(L);
for (lua_pushnil(L); lua_next(L, paramTable) != 0; lua_pop(L, 1)) {
if (lua_israwnumber(L, -2)) { // avoid 'n'
if (!lua_isnumber(L, -1)) {
luaL_error(L, "%s(): bad param table entry", caller);
}
const float value = lua_tofloat(L, -1);
cmd.params.push_back(value);
}
}
lua_pop(L, 1);
// options
lua_rawgeti(L, table, 3);
ParseCommandOptions(L, caller, lua_gettop(L), cmd);
lua_pop(L, 1);
// NOTE: should do some sanity checking?
}
