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//! Handling of concrete const values
/// A concrete constant value
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ConstScalar {
// for now, we only support the trivial case of constant evaluating the length of an array
Usize(usize),
/// Case of an unknown value that rustc might know but we don't
Unknown,
}
impl std::fmt::Display for ConstScalar {
fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
match self {
ConstScalar::Usize(us) => write!(fmt, "{}", us),
ConstScalar::Unknown => write!(fmt, "_"),
}
}
}
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