Enum AttrsRef 

pub enum AttrsRef<'a> {
    Empty,
    Slice(Box<[(NodeStr<'a>, ValueRef<'a>)]>),
}

Covariant attribute container for decoded nodes.

Uses Box<[T]> (16 bytes: ptr + len) instead of Vec<T> (24 bytes: ptr + len + cap) or inline storage (which inflated NodeRef size). Zero-attr nodes skip allocation entirely. The boxed slice is allocated once with exact size from the decoder.

Covariant in 'a (both Box and slices are covariant), compatible with yoke::Yokeable.

Variants

Empty

Slice(Box<[(NodeStr<'a>, ValueRef<'a>)]>)

Implementations

impl<'a> AttrsRef<'a>

pub fn from_vec(v: Vec<(NodeStr<'a>, ValueRef<'a>)>) -> Self

Build from a pre-filled Vec. Preferred path from the decoder which knows the exact attr count upfront.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn as_slice(&self) -> &[(NodeStr<'a>, ValueRef<'a>)]

pub fn iter(&self) -> impl Iterator<Item = &(NodeStr<'a>, ValueRef<'a>)>

Trait Implementations

impl<'a> Clone for AttrsRef<'a>

fn clone(&self) -> AttrsRef<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for AttrsRef<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> FromIterator<(NodeStr<'a>, ValueRef<'a>)> for AttrsRef<'a>

fn from_iter<I: IntoIterator<Item = (NodeStr<'a>, ValueRef<'a>)>>( iter: I, ) -> Self

Creates a value from an iterator.

impl PartialEq for AttrsRef<'_>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> Yokeable<'a> for AttrsRef<'static>

type Output = AttrsRef<'a>

This type MUST be Self with the 'static replaced with 'a, i.e. Self<'a>

fn transform(&'a self) -> &'a Self::Output

This method must cast self between &'a Self<'static> and &'a Self<'a>.

fn transform_owned(self) -> Self::Output

This method must cast self between Self<'static> and Self<'a>.

unsafe fn make(from: Self::Output) -> Self

This method can be used to cast away Self<'a>’s lifetime.

fn transform_mut<F>(&'a mut self, f: F)

where F: 'static + for<'b> FnOnce(&'b mut Self::Output),

This method must cast self between &'a mut Self<'static> and &'a mut Self<'a>, and pass it to f.