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//! Layered bounds iterator
//!
//! Iterator used for tracking layer changes between two sets of bounds,
//! interpreted as two separate _layers_.
//!
//! This iterator is very useful for [set operations](crate::iter::intervals::layered_bounds_set_ops) but also
//! for making the process of dealing with bounds flexible, as layered bounds
//! iterator return changes in the [`LayeredBoundsState`] using either
//! [`LayeredBoundsStateChangeAtAbsBound`] for absolute bounds,
//! or [`LayeredBoundsStateChangeAtRelBound`] for relative bounds.
//!
//! # Examples
//!
//! ```
//! # use std::error::Error;
//! # use jiff::Zoned;
//! # use periodical::intervals::absolute::{AbsBoundPair, AbsFiniteBoundPos};
//! # use periodical::intervals::meta::BoundInclusivity;
//! # use periodical::iter::intervals::bounds::AbsBoundsIteratorDispatcher;
//! # use periodical::iter::intervals::layered_bounds::{
//! # LayeredAbsBounds, LayeredBoundsState, LayeredBoundsStateChangeAtAbsBound,
//! # };
//! let first_layer_intervals = [
//! AbsBoundPair::new(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 08:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound(),
//! AbsFiniteBoundPos::new(
//! "2025-01-01 12:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound(),
//! ),
//! AbsBoundPair::new(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 13:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound(),
//! AbsFiniteBoundPos::new(
//! "2025-01-01 16:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound(),
//! ),
//! ];
//!
//! let second_layer_intervals = [
//! AbsBoundPair::new(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 07:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound(),
//! AbsFiniteBoundPos::new(
//! "2025-01-01 11:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound(),
//! ),
//! AbsBoundPair::new(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 14:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound(),
//! AbsFiniteBoundPos::new(
//! "2025-01-01 18:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound(),
//! ),
//! ];
//!
//! assert_eq!(
//! first_layer_intervals
//! .abs_bounds_iter()
//! .unite_bounds()
//! .layer(second_layer_intervals.abs_bounds_iter().unite_bounds())
//! .collect::<Vec<_>>(),
//! vec![
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::NoLayers,
//! LayeredBoundsState::SecondLayer,
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 07:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 07:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound()
//! ),
//! ),
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::SecondLayer,
//! LayeredBoundsState::BothLayers,
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 08:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 08:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound()
//! ),
//! ),
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::BothLayers,
//! LayeredBoundsState::FirstLayer,
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 11:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 11:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_start_bound()
//! ),
//! ),
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::FirstLayer,
//! LayeredBoundsState::NoLayers,
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 12:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 12:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_start_bound()
//! ),
//! ),
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::NoLayers,
//! LayeredBoundsState::FirstLayer,
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 13:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 13:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound()
//! ),
//! ),
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::FirstLayer,
//! LayeredBoundsState::BothLayers,
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 14:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 14:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_start_bound()
//! ),
//! ),
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::BothLayers,
//! LayeredBoundsState::SecondLayer,
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 16:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 16:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_start_bound()
//! ),
//! ),
//! LayeredBoundsStateChangeAtAbsBound::new(
//! LayeredBoundsState::SecondLayer,
//! LayeredBoundsState::NoLayers,
//! Some(
//! AbsFiniteBoundPos::new(
//! "2025-01-01 18:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! )
//! .to_end_bound()
//! ),
//! Some(
//! AbsFiniteBoundPos::new_with_incl(
//! "2025-01-01 18:00:00[Europe/Oslo]"
//! .parse::<Zoned>()?
//! .timestamp(),
//! BoundInclusivity::Exclusive,
//! )
//! .to_start_bound()
//! ),
//! ),
//! ],
//! );
//! # Ok::<(), Box<dyn Error>>(())
//! ```
// #[cfg(test)]
// mod absolute_tests;
// #[cfg(test)]
// mod relative_tests;
pub use LayeredBoundsStateChangeAtAbsBound;
pub use LayeredAbsBounds;
pub use LayeredBoundsStateChangeAtRelBound;
pub use LayeredRelBounds;
pub use LayeredBoundsState;