mirror of
https://github.com/typst/typst
synced 2025-06-08 13:16:24 +08:00
50 lines
1.6 KiB
Rust
50 lines
1.6 KiB
Rust
//! Modifiable symbols.
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use crate::foundations::{category, Category, Module, Scope, Symbol, Value};
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/// These two modules give names to symbols and emoji to make them easy to
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/// insert with a normal keyboard. Alternatively, you can also always directly
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/// enter Unicode symbols into your text and formulas. In addition to the
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/// symbols listed below, math mode defines `dif` and `Dif`. These are not
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/// normal symbol values because they also affect spacing and font style.
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#[category]
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pub static SYMBOLS: Category;
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impl From<codex::Module> for Scope {
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fn from(module: codex::Module) -> Scope {
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let mut scope = Self::new();
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extend_scope_from_codex_module(&mut scope, module);
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scope
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}
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}
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impl From<codex::Symbol> for Symbol {
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fn from(symbol: codex::Symbol) -> Self {
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match symbol {
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codex::Symbol::Single(c) => Symbol::single(c),
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codex::Symbol::Multi(list) => Symbol::list(list),
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}
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}
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}
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fn extend_scope_from_codex_module(scope: &mut Scope, module: codex::Module) {
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for (name, definition) in module.iter() {
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let value = match definition {
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codex::Def::Symbol(s) => Value::Symbol(s.into()),
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codex::Def::Module(m) => Value::Module(Module::new(name, m.into())),
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};
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scope.define(name, value);
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}
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}
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/// Hook up all `symbol` definitions.
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pub(super) fn define(global: &mut Scope) {
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global.category(SYMBOLS);
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extend_scope_from_codex_module(global, codex::ROOT);
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}
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/// Hook up all math `symbol` definitions, i.e., elements of the `sym` module.
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pub(super) fn define_math(math: &mut Scope) {
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extend_scope_from_codex_module(math, codex::SYM);
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}
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