precis-tools 0.1.9

Tools and parsers to generate PRECIS tables from the Unicode Character Database (UCD)
Documentation 
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use std::cmp::Ord;
use std::cmp::Ordering;
use std::fmt;

/// A representation of either a single codepoint or a range of codepoints.
#[derive(Debug)]
pub enum Codepoints {
    /// A single codepoint.
    Single(u32),
    /// A range of codepoints.
    Range(std::ops::RangeInclusive<u32>),
}

impl fmt::Display for Codepoints {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            Codepoints::Single(cp) => write!(f, "single codepoint {:#06x}", cp),
            Codepoints::Range(range) => write!(f, "codepoints range: [{}..{}]",
                range.start(), range.end()),
        }
    }
}

impl PartialEq<std::ops::RangeInclusive<u32>> for Codepoints {
    fn eq(&self, other: &std::ops::RangeInclusive<u32>) -> bool {
        match self {
            Codepoints::Single(ref c) => &(*c..=*c) == other,
            Codepoints::Range(ref r) => r == other,
        }
    }
}

impl PartialEq<Codepoints> for std::ops::RangeInclusive<u32> {
    fn eq(&self, other: &Codepoints) -> bool {
        other.eq(self)
    }
}

impl PartialEq<u32> for Codepoints {
    fn eq(&self, other: &u32) -> bool {
        match self {
            Codepoints::Single(ref c) => c == other,
            Codepoints::Range(ref r) => r.contains(other),
        }
    }
}

impl PartialEq<Codepoints> for u32 {
    fn eq(&self, other: &Codepoints) -> bool {
        other.eq(self)
    }
}

impl PartialEq<(u32, u32)> for Codepoints {
    fn eq(&self, other: &(u32, u32)) -> bool {
        match self {
            Codepoints::Single(ref c) => &(*c, *c) == other,
            Codepoints::Range(ref r) => &(*r.start(), *r.end()) == other,
        }
    }
}

impl PartialEq<Codepoints> for (u32, u32) {
    fn eq(&self, other: &Codepoints) -> bool {
        other.eq(self)
    }
}

impl PartialEq<Codepoints> for Codepoints {
    fn eq(&self, other: &Codepoints) -> bool {
        match self {
            Codepoints::Single(ref c) => other == c,
            Codepoints::Range(ref r) => other == r,
        }
    }
}

impl Eq for Codepoints {}

impl PartialOrd<u32> for Codepoints {
    fn partial_cmp(&self, other: &u32) -> Option<Ordering> {
        if self.lt(other) {
            Some(Ordering::Less)
        } else if self.gt(other) {
            Some(Ordering::Greater)
        } else {
            Some(Ordering::Equal)
        }
    }
    fn lt(&self, other: &u32) -> bool {
        match self {
            Codepoints::Single(ref c) => c < other,
            Codepoints::Range(ref r) => r.end() < other,
        }
    }
    fn le(&self, other: &u32) -> bool {
        match self {
            Codepoints::Single(ref c) => c <= other,
            Codepoints::Range(ref r) => r.start() <= other,
        }
    }
    fn gt(&self, other: &u32) -> bool {
        match self {
            Codepoints::Single(ref c) => c > other,
            Codepoints::Range(ref r) => r.start() > other,
        }
    }
    fn ge(&self, other: &u32) -> bool {
        match self {
            Codepoints::Single(ref c) => c >= other,
            Codepoints::Range(ref r) => r.end() >= other,
        }
    }
}

impl PartialOrd<Codepoints> for u32 {
    fn partial_cmp(&self, other: &Codepoints) -> Option<Ordering> {
        match other {
            Codepoints::Single(ref c) => Some(self.cmp(c)),
            Codepoints::Range(ref r) => {
                if self < r.start() {
                    Some(Ordering::Less)
                } else if self > r.end() {
                    Some(Ordering::Greater)
                } else {
                    Some(Ordering::Equal)
                }
            }
        }
    }

    fn lt(&self, other: &Codepoints) -> bool {
        match other {
            Codepoints::Single(ref c) => self < c,
            Codepoints::Range(ref r) => self < r.start(),
        }
    }
    fn le(&self, other: &Codepoints) -> bool {
        match other {
            Codepoints::Single(ref c) => self <= c,
            Codepoints::Range(ref r) => self <= r.end(),
        }
    }
    fn gt(&self, other: &Codepoints) -> bool {
        match other {
            Codepoints::Single(ref c) => self > c,
            Codepoints::Range(ref r) => self > r.end(),
        }
    }
    fn ge(&self, other: &Codepoints) -> bool {
        match other {
            Codepoints::Single(ref c) => self >= c,
            Codepoints::Range(ref r) => self >= r.start(),
        }
    }
}