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//! Literals.
use super::*;
use crate::color::RgbaColor;
use crate::eval::DictKey;
use crate::geom::Unit;
/// A literal.
#[derive(Debug, Clone, PartialEq)]
pub enum Lit {
/// A identifier literal: `left`.
Ident(Ident),
/// A boolean literal: `true`, `false`.
Bool(bool),
/// An integer literal: `120`.
Int(i64),
/// A floating-point literal: `1.2`, `10e-4`.
Float(f64),
/// A length literal: `12pt`, `3cm`.
Length(f64, Unit),
/// A percent literal: `50%`.
///
/// _Note_: `50%` is stored as `50.0` here, but as `0.5` in the
/// corresponding [value](crate::geom::Relative).
Percent(f64),
/// A color literal: `#ffccee`.
Color(RgbaColor),
/// A string literal: `"hello!"`.
Str(String),
/// A dictionary literal: `(false, 12cm, greeting = "hi")`.
Dict(LitDict),
/// A content literal: `{*Hello* there!}`.
Content(SynTree),
}
/// A dictionary literal: `(false, 12cm, greeting = "hi")`.
#[derive(Debug, Default, Clone, PartialEq)]
pub struct LitDict(pub Vec<LitDictEntry>);
/// An entry in a dictionary literal: `false` or `greeting = "hi"`.
#[derive(Debug, Clone, PartialEq)]
pub struct LitDictEntry {
/// The key of the entry if there was one: `greeting`.
pub key: Option<Spanned<DictKey>>,
/// The value of the entry: `"hi"`.
pub expr: Spanned<Expr>,
}
impl LitDict {
/// Create an empty dict literal.
pub fn new() -> Self {
Self::default()
}
}
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