wtx 0.28.0

A collection of different transport implementations and related tools focused primarily on web technologies.
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use core::ops::Deref;

/// A thread-safe reference-counting pointer. ‘Arc’ stands for ‘Atomically Reference Counted’.
#[derive(Debug)]
pub struct Arc<T>(
  #[cfg(feature = "portable-atomic-util")] portable_atomic_util::Arc<T>,
  #[cfg(not(feature = "portable-atomic-util"))] alloc::sync::Arc<T>,
);

impl<T> Arc<T> {
  /// Constructs a new instance.
  #[inline]
  pub fn new(data: T) -> Self {
    Self(
      #[cfg(feature = "portable-atomic-util")]
      portable_atomic_util::Arc::new(data),
      #[cfg(not(feature = "portable-atomic-util"))]
      alloc::sync::Arc::new(data),
    )
  }

  /// Returns a mutable reference into the given `Arc`, if there are
  /// no other `Arc` or [`Weak`] pointers to the same allocation.
  #[inline]
  pub fn get_mut(this: &mut Self) -> Option<&mut T> {
    #[cfg(feature = "portable-atomic-util")]
    return portable_atomic_util::Arc::get_mut(&mut this.0);
    #[cfg(not(feature = "portable-atomic-util"))]
    return alloc::sync::Arc::get_mut(&mut this.0);
  }
}

impl<T> Clone for Arc<T> {
  #[inline]
  fn clone(&self) -> Self {
    #[cfg(feature = "portable-atomic-util")]
    let data = portable_atomic_util::Arc::clone(&self.0);
    #[cfg(not(feature = "portable-atomic-util"))]
    let data = alloc::sync::Arc::clone(&self.0);
    Self(data)
  }
}

impl<T> Deref for Arc<T> {
  type Target = T;

  #[inline]
  fn deref(&self) -> &Self::Target {
    &self.0
  }
}

#[cfg(feature = "portable-atomic-util")]
impl<T> From<Arc<T>> for portable_atomic_util::Arc<T> {
  #[inline]
  fn from(from: Arc<T>) -> Self {
    from.0
  }
}

#[cfg(feature = "portable-atomic-util")]
impl<T> From<portable_atomic_util::Arc<T>> for Arc<T> {
  #[inline]
  fn from(from: portable_atomic_util::Arc<T>) -> Self {
    Self(from)
  }
}

#[cfg(not(feature = "portable-atomic-util"))]
impl<T> From<Arc<T>> for alloc::sync::Arc<T> {
  #[inline]
  fn from(from: Arc<T>) -> Self {
    from.0
  }
}

#[cfg(not(feature = "portable-atomic-util"))]
impl<T> From<alloc::sync::Arc<T>> for Arc<T> {
  #[inline]
  fn from(from: alloc::sync::Arc<T>) -> Self {
    Self(from)
  }
}