1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

//! [![crates.io version](https://img.shields.io/crates/v/any-range.svg)](https://crates.io/crates/any-range)
//! [![license: Apache 2.0](https://gitlab.com/leonhard-llc/ops/-/raw/main/license-apache-2.0.svg)](https://gitlab.com/leonhard-llc/ops/-/raw/main/any-range/LICENSE)
//! [![unsafe forbidden](https://gitlab.com/leonhard-llc/ops/-/raw/main/unsafe-forbidden.svg)](https://github.com/rust-secure-code/safety-dance/)
//! [![pipeline status](https://gitlab.com/leonhard-llc/ops/badges/main/pipeline.svg)](https://gitlab.com/leonhard-llc/ops/-/pipelines)
//!
//! # any-range
//!
//! `AnyRange<T>` enum can hold any `Range*<T>` type.
//!
//! ## Use Cases
//! - Store any kind of range in a struct without adding a type parameter
//!
//! ## Features
//! - `no_std`, depends only on `core`
//! - `forbid(unsafe_code)`
//! - 100% test coverage
//!
//! ## Limitations
//! - Uses more bytes than a plain `Range<T>`.
//!   The alignment of `T` determines how many extra bytes the enum uses.
//!
//! ## Alternatives
//! - [`anyrange`](https://crates.io/crates/anyrange)
//!   - Should be called `ToRange`
//!   - Doesn't support `RangeInclusive` or `RangeToInclusive`
//!   - Unmaintained
//!
//! ## Example
//! ```
//! use any_range::AnyRange;
//! let range: AnyRange<u8> = (3..5).into();
//! assert!(range.contains(&3));
//! ```
//!
//! ## Cargo Geiger Safety Report
//!
//! ## Changelog
//! - v0.1.2 - Increase test coverage
//! - v0.1.1 - Update docs
//! - v0.1.0 - Initial version
//!
//! ## Happy Contributors 🙂
//! Fixing bugs and adding features is easy and fast.
//! Send us a pull request and we intend to:
//! - Always respond within 24 hours
//! - Provide clear & concrete feedback
//! - Immediately make a new release for your accepted change
#![forbid(unsafe_code)]
use core::fmt::Debug;
use core::ops::{Bound, Range, RangeFrom, RangeFull, RangeInclusive, RangeTo, RangeToInclusive};
use std::ops::RangeBounds;

/// An enum that can hold any Range* type.
///
/// # Example
/// ```
/// use any_range::AnyRange;
/// let range: AnyRange<u8> = (3..5).into();
/// assert!(range.contains(&3));
/// ```
#[derive(Clone, PartialEq, Eq)]
pub enum AnyRange<T: Clone + PartialOrd + PartialEq> {
    Range(Range<T>),
    RangeFrom(RangeFrom<T>),
    RangeFull(RangeFull),
    RangeInclusive(RangeInclusive<T>),
    RangeTo(RangeTo<T>),
    RangeToInclusive(RangeToInclusive<T>),
}
impl<T: Clone + PartialOrd + PartialEq> AnyRange<T> {
    /// Returns true if item is contained in the range.
    pub fn contains(&self, value: &T) -> bool {
        RangeBounds::contains(self, value)
    }
    /// Returns the start value as a Bound.
    pub fn start_bound(&self) -> Bound<&T> {
        RangeBounds::start_bound(self)
    }
    /// Returns the end value as a Bound.
    pub fn end_bound(&self) -> Bound<&T> {
        RangeBounds::end_bound(self)
    }
}
impl<T: Clone + PartialOrd + PartialEq> RangeBounds<T> for AnyRange<T> {
    fn start_bound(&self) -> Bound<&T> {
        match self {
            Self::Range(r) => r.start_bound(),
            Self::RangeFrom(r) => r.start_bound(),
            Self::RangeFull(r) => r.start_bound(),
            Self::RangeInclusive(r) => r.start_bound(),
            Self::RangeTo(r) => r.start_bound(),
            Self::RangeToInclusive(r) => r.start_bound(),
        }
    }
    fn end_bound(&self) -> Bound<&T> {
        match self {
            Self::Range(r) => r.end_bound(),
            Self::RangeFrom(r) => r.end_bound(),
            Self::RangeFull(r) => r.end_bound(),
            Self::RangeInclusive(r) => r.end_bound(),
            Self::RangeTo(r) => r.end_bound(),
            Self::RangeToInclusive(r) => r.end_bound(),
        }
    }
}
impl<T: Clone + PartialOrd + PartialEq> From<Range<T>> for AnyRange<T> {
    fn from(r: Range<T>) -> Self {
        Self::Range(r)
    }
}
impl<T: Clone + PartialOrd + PartialEq> From<RangeFrom<T>> for AnyRange<T> {
    fn from(r: RangeFrom<T>) -> Self {
        Self::RangeFrom(r)
    }
}
impl<T: Clone + PartialOrd + PartialEq> From<RangeFull> for AnyRange<T> {
    fn from(r: RangeFull) -> Self {
        Self::RangeFull(r)
    }
}
impl<T: Clone + PartialOrd + PartialEq> From<RangeInclusive<T>> for AnyRange<T> {
    fn from(r: RangeInclusive<T>) -> Self {
        Self::RangeInclusive(r)
    }
}
impl<T: Clone + PartialOrd + PartialEq> From<RangeTo<T>> for AnyRange<T> {
    fn from(r: RangeTo<T>) -> Self {
        Self::RangeTo(r)
    }
}
impl<T: Clone + PartialOrd + PartialEq> From<RangeToInclusive<T>> for AnyRange<T> {
    fn from(r: RangeToInclusive<T>) -> Self {
        Self::RangeToInclusive(r)
    }
}
impl<T: Clone + PartialOrd + PartialEq + Debug> Debug for AnyRange<T> {
    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> Result<(), core::fmt::Error> {
        match self {
            AnyRange::Range(r) => write!(f, "AnyRange({:?})", r),
            AnyRange::RangeFrom(r) => write!(f, "AnyRange({:?})", r),
            AnyRange::RangeFull(r) => write!(f, "AnyRange({:?})", r),
            AnyRange::RangeInclusive(r) => write!(f, "AnyRange({:?})", r),
            AnyRange::RangeTo(r) => write!(f, "AnyRange({:?})", r),
            AnyRange::RangeToInclusive(r) => write!(f, "AnyRange({:?})", r),
        }
    }
}