hiko-syntax 0.4.0

hiko-syntax: part of the hiko ML-family scripting language
Documentation 
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct Span {
    pub file_id: u32,
    pub start: u32,
    pub end: u32,
}

impl Span {
    pub fn new(file_id: u32, start: u32, end: u32) -> Self {
        Self {
            file_id,
            start,
            end,
        }
    }

    pub fn dummy() -> Self {
        Self {
            file_id: 0,
            start: 0,
            end: 0,
        }
    }

    pub fn merge(self, other: Span) -> Span {
        debug_assert_eq!(
            self.file_id, other.file_id,
            "cannot merge spans from different files"
        );
        Span {
            file_id: self.file_id,
            start: self.start.min(other.start),
            end: self.end.max(other.end),
        }
    }
}