/// <summary>
/// 连接指令，将连续n个寄存器的值连接在一起，放入a指定的寄存器，b和c代表起始索引和终结索引
/// </summary>
/// <param name="i"></param>
public void Concat(Instruction i)
{
int a = 0, b = 0, c = 0;
i.ABC(ref a, ref b, ref c);
int n = c - b + 1;
for (int j = b + 1; j <= c + 1; j++)
{
luaState.PushValueFromIndex(j);
}
luaState.Concat(n);
luaState.Replace(a + 1);
}
