如何我通过一个表从Lua成C ++？ [英] How to I pass a table from lua into C++?

问题描述

我将如何通过从Lua未知长度的表到绑定C ++函数？

How would I pass a table of unknown length from lua into a bound C++ function?

我希望能够调用LUA函数是这样的：

I want to be able to call the lua function like this:

call_C_Func({1,1,2,3,5,8,13,21})

和表的内容复制到一个数组（preferably STL的vector）？

And copy the table contents into an array (preferably STL vector)?

推荐答案

如果您使用 LuaBind 它为一个注册电话一样简单。至于卷起你自己的，你需要看看 lua_next 功能。

If you use LuaBind it's as simple as one registered call. As for rolling up your own, you need to take a look at lua_next function.

基本上，code是如下：

Basically the code is as follows:

lua_pushnil(state); // first key
index = lua_gettop(state);
while ( lua_next(state,index) ) { // traverse keys
  something = lua_tosomething(state,-1); // tonumber for example
  results.push_back(something);
  lua_pop(state,1); // stack restore
}

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