use core::ops::{
Index, IndexMut, Range, RangeFrom, RangeFull, RangeInclusive, RangeTo, RangeToInclusive,
};
use core::{borrow::Borrow, fmt, ops::Deref};
use willow_data_model::prelude as wdm;
use willow_data_model::prelude::InvalidComponentError;
use crate::MCL;
wrapper! {
/// A slice of a [Path Component](https://willowprotocol.org/specs/data-model/index.html#Component).
///
/// This type statically enforces a maximal length of `4096` ([`MCL`]). Otherwise, it is basically a regular `[u8]`.
///
/// This is an *unsized* type, meaning that it must always be used behind a pointer like `&` or [`Box`].
///
/// Use the [`component!`](crate::prelude::component) macro to create statically-known components, and the [`Component::new`], [`Component::new_empty`], and [`Component::new_unchecked`] methods for dynamically creating components.
///
/// ```
/// use willow25::prelude::*;
///
/// assert_eq!(component!("abc"), Component::new(b"abc").unwrap());
/// ```
///
/// Most of the time, you might be working with [`Paths`](crate::prelude::Path) and will have no need to directly interact with individual components.
#[derive(PartialEq, Eq, PartialOrd, Ord, Hash)]
Component; wdm::Component<MCL>;
dst
}
impl fmt::Debug for Component {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.0.fmt(f)
}
}
impl Component {
/// Creates a reference to a [`Component`] from a reference to a byte slice. Returns [`None`] if the slice is longer than 4096 ([`MCL`]).
///
/// Aside from checking the length, this is a cost-free conversion.
///
/// #### Examples
///
/// ```
/// use willow25::prelude::*;
/// assert!(Component::new(b"yay").is_ok());
/// assert!(Component::new(b"too_loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong").is_err());
/// ```
pub fn new(s: &[u8]) -> Result<&Self, InvalidComponentError> {
Ok(wdm::Component::<MCL>::new(s)?.into())
}
/// Creates a reference to a [`Component`] from a reference to a byte slice, without ensuring it consists of no more than 4096 ([`MCL`]) bytes.
///
/// This is a cost-free conversion.
///
/// #### Safety
///
/// Supplying a slice of length strictly greater than 4096 ([`MCL`]) may trigger undefined behavior,
/// either immediately, or on any subsequent function invocation that operates on the resulting [`Component`].
///
/// #### Examples
///
/// ```
/// use willow25::prelude::*;
/// let unchecked_component = unsafe { Component::new_unchecked(b"yay") };
/// assert_eq!(unchecked_component.as_bytes(), b"yay");
/// ```
pub unsafe fn new_unchecked(s: &[u8]) -> &Self {
unsafe { wdm::Component::<MCL>::new_unchecked(s).into() }
}
/// Creates a mutable reference to a [`Component`] from a mutable reference to a byte slice. Returns [`None`] if the slice is longer than 4096 ([`MCL`]).
///
/// Aside from checking the length, this is a cost-free conversion.
///
/// #### Examples
///
/// ```
/// use willow25::prelude::*;
/// assert!(Component::new(&mut [b'y', b'a', b'y']).is_ok());
/// assert!(Component::new(&mut [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).is_err());
/// ```
pub fn new_mut(s: &mut [u8]) -> Result<&mut Self, InvalidComponentError> {
Ok(wdm::Component::<MCL>::new_mut(s)?.into())
}
/// Creates a mutable reference to a [`Component`] from a mutable reference to a byte slice, without ensuring it consists of no more than 4096 ([`MCL`]) bytes.
///
/// This is a cost-free conversion.
///
/// #### Safety
///
/// Supplying a slice of length strictly greater than 4096 ([`MCL`]) may trigger undefined behavior,
/// either immediately, or on any subsequent function invocation that operates on the resulting [`Component`].
///
/// #### Examples
///
/// ```
/// use willow25::prelude::*;
/// let mut buf = [b'y', b'a', b'y'];
/// let unchecked_component = unsafe { Component::new_mut_unchecked(&mut buf[..]) };
/// assert_eq!(unchecked_component.as_bytes(), &mut [b'y', b'a', b'y']);
/// ```
pub unsafe fn new_mut_unchecked(s: &mut [u8]) -> &mut Self {
unsafe { wdm::Component::<MCL>::new_mut_unchecked(s).into() }
}
/// Creates a `&'static` reference to the empty component.
///
/// ```
/// use willow25::prelude::*;
///
/// assert_eq!(component!(""), Component::new_empty());
/// ```
pub fn new_empty() -> &'static Self {
wdm::Component::<MCL>::new_empty().into()
}
/// Returns the raw bytes of the component.
///
/// ```
/// use willow25::prelude::*;
/// assert_eq!(component!("yay").as_bytes(), b"yay");
/// ```
pub fn as_bytes(&self) -> &[u8] {
self.0.as_bytes()
}
/// Returns a mutable reference to the raw bytes of the component.
///
/// ```
/// use willow25::prelude::*;
/// assert_eq!(
/// Component::new_mut(&mut [b'y', b'a', b'y']).unwrap().as_bytes_mut(),
/// &mut [b'y', b'a', b'y'],
/// );
/// ```
pub fn as_bytes_mut(&mut self) -> &mut [u8] {
self.0.as_bytes_mut()
}
}
impl AsRef<[u8]> for Component {
fn as_ref(&self) -> &[u8] {
self.0.as_ref()
}
}
impl Deref for Component {
type Target = [u8];
fn deref(&self) -> &Self::Target {
self.0.deref()
}
}
impl Borrow<[u8]> for Component {
fn borrow(&self) -> &[u8] {
self.0.borrow()
}
}
impl fmt::Display for Component {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(&self.0, f)
}
}
impl IndexMut<usize> for Component {
fn index_mut(&mut self, index: usize) -> &mut Self::Output {
&mut self.0[index]
}
}
impl Index<usize> for Component {
type Output = u8;
fn index(&self, index: usize) -> &Self::Output {
&self.0[index]
}
}
impl Index<Range<usize>> for Component {
type Output = Component;
fn index(&self, index: Range<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeFrom<usize>> for Component {
type Output = Component;
fn index(&self, index: RangeFrom<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeTo<usize>> for Component {
type Output = Component;
fn index(&self, index: RangeTo<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeFull> for Component {
type Output = Component;
fn index(&self, index: RangeFull) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeInclusive<usize>> for Component {
type Output = Component;
fn index(&self, index: RangeInclusive<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeToInclusive<usize>> for Component {
type Output = Component;
fn index(&self, index: RangeToInclusive<usize>) -> &Self::Output {
self.0[index].into()
}
}
/// An owned [component](https://willowprotocol.org/specs/data-model/index.html#Component) of a Willow [Path](https://willowprotocol.org/specs/data-model/index.html#Path), using reference counting for cheap cloning. Typically obtained from a [`Path`](super::Path) instead of being created independently.
///
/// This type enforces a const-generic [maximum component length](https://willowprotocol.org/specs/data-model/index.html#max_component_length). Use the [`AsRef`], [`Deref`], or [`Borrow`] implementation to access the wrapped immutable byte slice.
#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
#[repr(transparent)]
pub struct OwnedComponent(pub(crate) wdm::OwnedComponent<MCL>);
impl fmt::Debug for OwnedComponent {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.0.fmt(f)
}
}
impl OwnedComponent {
/// Creates an [`OwnedComponent`] by copying data from a byte slice. Returns [`None`] if the slice is longer than 4096 ([`MCL`]).
///
/// #### Complexity
///
/// Runs in `O(n)`, where `n` is the length of the slice. Performs a single allocation of `O(n)` bytes.
///
/// #### Examples
///
/// ```
/// use willow25::prelude::*;
/// assert!(OwnedComponent::new(b"yay").is_ok());
/// assert!(OwnedComponent::new(b"too_loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong").is_err());
/// ```
pub fn new(data: &[u8]) -> Result<Self, InvalidComponentError> {
Ok(Self(wdm::OwnedComponent::new(data)?))
}
/// Creates an [`OwnedComponent`] by copying data from a byte slice, without verifying its length.
///
/// #### Safety
///
/// Supplying a slice of length strictly greater than 4096 ([`MCL`]) may trigger undefined behavior,
/// either immediately, or on any subsequent function invocation that operates on the resulting [`OwnedComponent`].
///
/// #### Complexity
///
/// Runs in `O(n)`, where `n` is the length of the slice. Performs a single allocation of `O(n)` bytes.
///
/// #### Examples
///
/// ```
/// use willow25::prelude::*;
/// let unchecked_component = unsafe { OwnedComponent::new_unchecked(b"yay") };
/// assert_eq!(unchecked_component.as_bytes(), b"yay");
/// ```
pub unsafe fn new_unchecked(data: &[u8]) -> Self {
Self(unsafe { wdm::OwnedComponent::new_unchecked(data) })
}
/// Returns an empty [`OwnedComponent`].
///
/// #### Complexity
///
/// Runs in `O(1)`, performs no allocations.
///
/// #### Examples
///
/// ```
/// use willow25::prelude::*;
/// let empty_component = OwnedComponent::new_empty();
/// assert_eq!(empty_component.as_bytes(), &[]);
/// assert_eq!(empty_component, OwnedComponent::default());
/// ```
pub fn new_empty() -> Self {
Self(wdm::OwnedComponent::new_empty())
}
/// Returns the raw bytes of the component.
///
/// ```
/// use willow25::prelude::*;
/// assert_eq!(OwnedComponent::new(b"yay").unwrap().as_bytes(), b"yay");
/// ```
pub fn as_bytes(&self) -> &[u8] {
self.0.as_bytes()
}
}
impl AsRef<[u8]> for OwnedComponent {
fn as_ref(&self) -> &[u8] {
self.0.as_ref()
}
}
impl From<wdm::OwnedComponent<MCL>> for OwnedComponent {
fn from(value: wdm::OwnedComponent<MCL>) -> Self {
Self(value)
}
}
impl<'a> From<&'a wdm::OwnedComponent<MCL>> for &'a OwnedComponent {
fn from(value: &'a wdm::OwnedComponent<MCL>) -> Self {
// Safe because `OwnedComponent` is `#[rep(transparent)]`.
unsafe { &*(value as *const wdm::OwnedComponent<MCL> as *const Self) }
}
}
impl<'a> From<&'a mut wdm::OwnedComponent<MCL>> for &'a mut OwnedComponent {
fn from(value: &'a mut wdm::OwnedComponent<MCL>) -> Self {
// Safe because `OwnedComponent` is `#[rep(transparent)]`.
unsafe { &mut *(value as *mut wdm::OwnedComponent<MCL> as *mut Self) }
}
}
impl From<OwnedComponent> for wdm::OwnedComponent<MCL> {
fn from(value: OwnedComponent) -> wdm::OwnedComponent<MCL> {
value.0
}
}
impl<'a> From<&'a OwnedComponent> for &'a wdm::OwnedComponent<MCL> {
fn from(value: &'a OwnedComponent) -> Self {
// Safe because `OwnedComponent` is `#[rep(transparent)]`.
unsafe { &*(value as *const OwnedComponent as *const Self) }
}
}
impl<'a> From<&'a mut OwnedComponent> for &'a mut wdm::OwnedComponent<MCL> {
fn from(value: &'a mut OwnedComponent) -> Self {
// Safe because `OwnedComponent` is `#[rep(transparent)]`.
unsafe { &mut *(value as *mut OwnedComponent as *mut Self) }
}
}
impl Deref for OwnedComponent {
type Target = [u8];
fn deref(&self) -> &Self::Target {
self.0.deref()
}
}
impl Borrow<[u8]> for OwnedComponent {
fn borrow(&self) -> &[u8] {
self.0.borrow()
}
}
impl fmt::Display for OwnedComponent {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
fmt::Display::fmt(&self.0, f)
}
}
impl Index<usize> for OwnedComponent {
type Output = u8;
fn index(&self, index: usize) -> &Self::Output {
&self.0[index]
}
}
impl Index<Range<usize>> for OwnedComponent {
type Output = Component;
fn index(&self, index: Range<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeFrom<usize>> for OwnedComponent {
type Output = Component;
fn index(&self, index: RangeFrom<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeTo<usize>> for OwnedComponent {
type Output = Component;
fn index(&self, index: RangeTo<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeFull> for OwnedComponent {
type Output = Component;
fn index(&self, index: RangeFull) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeInclusive<usize>> for OwnedComponent {
type Output = Component;
fn index(&self, index: RangeInclusive<usize>) -> &Self::Output {
self.0[index].into()
}
}
impl Index<RangeToInclusive<usize>> for OwnedComponent {
type Output = Component;
fn index(&self, index: RangeToInclusive<usize>) -> &Self::Output {
self.0[index].into()
}
}
#[cfg(test)]
mod tests {
use super::*;
// Component tests
#[test]
fn index_mut() {
let base = &mut [b'y', b'a', b'y'];
let slice = &mut [b'y', b'a', b'y'][..];
let compo = Component::new_mut(base).unwrap();
compo[0] = b'b';
slice[0] = b'b';
assert_eq!(&b"bay"[..], slice);
assert_eq!(&b"bay"[..], compo.as_bytes());
}
#[test]
fn index() {
let slice = &b"sunshine"[..];
let compo = Component::new(b"sunshine").unwrap();
assert_eq!(slice[1], compo[1]);
assert_eq!(slice[5], compo[5]);
}
#[test]
#[should_panic]
fn index_out_of_bound() {
let compo = Component::new(b"sunshine").unwrap();
let _ = &compo[8];
}
#[test]
fn range() {
let slice = &b"sunshine"[..];
let compo = Component::new(b"sunshine").unwrap();
assert_eq!(&slice[1..3], compo[1..3].as_bytes());
}
#[test]
fn range_0_0() {
let slice = &b"sunshine"[..];
let compo = Component::new(b"sunshine").unwrap();
assert_eq!(&slice[0..0], compo[0..0].as_bytes());
}
#[test]
fn rangefull() {
let slice = &b"sunshine"[..];
let compo = Component::new(b"sunshine").unwrap();
assert_eq!(slice, compo[..].as_bytes());
}
#[test]
fn rangefrom() {
let slice = &b"sunshine"[..];
let compo = Component::new(b"sunshine").unwrap();
assert_eq!(&slice[1..], compo[1..].as_bytes());
}
#[test]
fn rangeto() {
let slice = &b"sunshine"[..];
let compo = Component::new(b"sunshine").unwrap();
assert_eq!(&slice[..3], compo[..3].as_bytes());
}
#[test]
#[should_panic]
#[allow(clippy::reversed_empty_ranges)]
fn range_start_bigger_than_end() {
let compo = Component::new(b"sunshine").unwrap();
let _ = &compo[2..1];
}
#[test]
fn rangefrom_start_equal_component() {
let slice = &b"sunshine"[..];
let compo = Component::new(b"sunshine").unwrap();
assert_eq!(&slice[8..], compo[8..].as_bytes());
}
#[test]
#[should_panic]
fn rangefrom_start_bigger_than_component() {
let compo = Component::new(b"sunshine").unwrap();
let _ = &compo[9..];
}
#[test]
#[should_panic]
fn rangeto_end_bigger_than_component() {
let compo = Component::new(b"sunshine").unwrap();
let _ = &compo[..9];
}
// OwnedComponent tests
#[test]
fn owned_index() {
let slice = &b"sunshine"[..];
let compo = OwnedComponent::new(b"sunshine").unwrap();
assert_eq!(slice[1], compo[1]);
assert_eq!(slice[5], compo[5]);
}
#[test]
#[should_panic]
fn owned_index_out_of_bound() {
let compo = OwnedComponent::new(b"sunshine").unwrap();
let _ = &compo[8];
}
#[test]
fn owned_range() {
let slice = &b"sunshine"[..];
let compo = OwnedComponent::new(b"sunshine").unwrap();
assert_eq!(&slice[1..3], compo[1..3].as_bytes());
}
#[test]
fn owned_range_0_0() {
let slice = &b"sunshine"[..];
let compo = OwnedComponent::new(b"sunshine").unwrap();
assert_eq!(&slice[0..0], compo[0..0].as_bytes());
}
#[test]
fn owned_rangefull() {
let slice = &b"sunshine"[..];
let compo = OwnedComponent::new(b"sunshine").unwrap();
assert_eq!(slice, compo[..].as_bytes());
}
#[test]
fn owned_rangefrom() {
let slice = &b"sunshine"[..];
let compo = OwnedComponent::new(b"sunshine").unwrap();
assert_eq!(&slice[1..], compo[1..].as_bytes());
}
#[test]
fn owned_rangeto() {
let slice = &b"sunshine"[..];
let compo = OwnedComponent::new(b"sunshine").unwrap();
assert_eq!(&slice[..3], compo[..3].as_bytes());
}
#[test]
#[should_panic]
#[allow(clippy::reversed_empty_ranges)]
fn owned_range_start_bigger_than_end() {
let compo = OwnedComponent::new(b"sunshine").unwrap();
let _ = &compo[2..1];
}
#[test]
fn owned_rangefrom_start_equal_component() {
let slice = &b"sunshine"[..];
let compo = OwnedComponent::new(b"sunshine").unwrap();
assert_eq!(&slice[8..], compo[8..].as_bytes());
}
#[test]
#[should_panic]
fn owned_rangefrom_start_bigger_than_component() {
let compo = OwnedComponent::new(b"sunshine").unwrap();
let _ = &compo[9..];
}
#[test]
#[should_panic]
fn owned_rangeto_end_bigger_than_component() {
let compo = OwnedComponent::new(b"sunshine").unwrap();
let _ = &compo[..9];
}
}