56 lines
1.3 KiB
Rust
56 lines
1.3 KiB
Rust
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use std::fmt::{self, Display};
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/// The selector namespace.
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///
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/// If this is `None`, this matches all elements in the default namespace. If
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/// it's `Empty`, this matches all elements that aren't in any
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/// namespace. If it's `Asterisk`, this matches all elements in any namespace.
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/// Otherwise, it matches all elements in the given namespace.
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#[derive(Clone, Debug, Eq, PartialEq)]
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pub(crate) enum Namespace {
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Empty,
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Asterisk,
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Other(String),
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None,
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}
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impl Display for Namespace {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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Self::Empty => write!(f, "|"),
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Self::Asterisk => write!(f, "*|"),
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Self::Other(namespace) => write!(f, "{}|", namespace),
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Self::None => Ok(()),
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}
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}
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}
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#[derive(Clone, Debug, Eq, PartialEq)]
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pub(crate) struct QualifiedName {
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pub ident: String,
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pub namespace: Namespace,
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}
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impl Display for QualifiedName {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "{}", self.namespace)?;
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f.write_str(&self.ident)
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}
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}
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pub(crate) struct Specificity(u32, u32);
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impl Specificity {
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pub const fn new(min: u32, max: u32) -> Self {
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Specificity(min, max)
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}
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pub const fn min(&self) -> u32 {
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self.0
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}
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pub const fn max(&self) -> u32 {
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self.1
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}
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}
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