/// <summary>
/// 加载参数，并写入条件转移指令
/// </summary>
/// <param name="op"></param>
/// <param name="target"></param>
private void GoToIf(LogicOperator op, ILabel target)
{
for (int i = 0; i < op.ArgumentCount; ++i)
{
// 参与验证的项
_evalStack.Pop();
}
op.WriteBranch(_writer, target);
}
