AppFlowy/frontend/rust-lib/lib-infra/src/util.rs

#[macro_export]
macro_rules! if_native {
    ($($item:item)*) => {$(
        #[cfg(not(target_arch = "wasm32"))]
        $item
    )*}
}

#[macro_export]
macro_rules! if_wasm {
    ($($item:item)*) => {$(
        #[cfg(target_arch = "wasm32")]
        $item
    )*}
}

pub fn move_vec_element<T, F>(
  vec: &mut Vec<T>,
  filter: F,
  _from_index: usize,
  to_index: usize,
) -> Result<bool, String>
where
  F: FnMut(&T) -> bool,
{
  match vec.iter().position(filter) {
    None => Ok(false),
    Some(index) => {
      if vec.len() > to_index {
        let removed_element = vec.remove(index);
        vec.insert(to_index, removed_element);
        Ok(true)
      } else {
        let msg = format!(
          "Move element to invalid index: {}, current len: {}",
          to_index,
          vec.len()
        );
        Err(msg)
      }
    },
  }
}

#[allow(dead_code)]
pub fn timestamp() -> i64 {
  chrono::Utc::now().timestamp()
}

#[inline]
pub fn md5<T: AsRef<[u8]>>(data: T) -> String {
  let md5 = format!("{:x}", md5::compute(data));
  md5
}