Function contract_api_wrapper

src/Chain/libraries/glua/lauxlib.cpp:1133–1141

包装合约的api函数 args: apiFunc, contract_id, ret: wrapedApiFunc

// 包装合约的api函数
// args: apiFunc, contract_id, ret: wrapedApiFunc
static int contract_api_wrapper(lua_State *L)
{
	// 获取合约id，加入upval/关联到这个closure
	const char *contract_id = luaL_checkstring(L, 2);
	lua_pushvalue(L, 1); // 压函数本身入栈
	lua_pushstring(L, contract_id);
	lua_pushcclosure(L, &contract_api_wrapper_func, 2);
	return 1;
}

static bool contract_table_traverser_to_wrap_api(lua_State *L, void *ud)
{