C++给Lua传递表
lua文件
main.lua
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function ferror(e) print("my error:"..e) return "errors..." end function evenst(e) print("c++ function") print(e) return "that is ok" end |
C++文件
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#include <iostream> extern "C" { #include <lua.h> #include <luaxlib.h> #include <lualib.h> } int main() { lua_State * lua = luaL_newstate(); luaL_openlibs(lua); luaopen_base(lua); if(luaL_loadfile(lua,"main.lua")) { const std::string error = lua_tostring(lua,-1); std::cout << "lua file load error:" << error << std::endl; return -1; } if(lua_pcall(lua,0,0,0)) { const std::string error = lua_tostring(lua,-1); std::cout << "lua pcall error:" << error << std::endl; return -1; } int errfun = lua_gettop(lua); //lua文件错误处理函数 lua_getglobal(lua,"ferror"); errfun++; lua_getglobal(lua,"event"); lua_pushstring(lua,"key"); //--------新建表并传递给lua lua_newtable(lua); lua_pushstring(lua,"name"); lua_pushstring(lua,"aet"); lua_settable(lua,-3);//此时表位于-3,把数据写入表并弹出name和aet //--------- if(lua_pcall(lua,2,1,errfun) != 0)//两个参数 { /*std::cout << "call event failed:" << lua_tostring(lua,-1) <<std::endl; lua_pop(lua,1);*/ } else { //std::cout << "lua return :" << lua_tostring(lua, -1) << std::endl; //获取表 lua_getfiled(lua,-1,"id"); std::cout << "return table id is:" << static_cast<int>(lua_tonumber(lua,-1)) << std::endl; //---------- lua_pop(lua, 1); } lua_pop(lua,1); lua_close(lua); return 0; } |
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