hush 0.1.1

Hush is a unix shell scripting language based on the Lua programming language
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use std::{borrow::Cow, fmt::Display as _};

use super::{Interner, Symbol};
use crate::{
	syntax::ast::fmt::ILL_FORMED,
	fmt::Display,
	term::color,
};


impl<'a> Display<'a> for Symbol {
	type Context = &'a Interner;

	fn fmt(&self, f: &mut std::fmt::Formatter<'_>, context: Self::Context) -> std::fmt::Result {
		if *self == Self::default() {
			ILL_FORMED.fmt(f)
		} else {
			let ident: Cow<[u8]> = match context.resolve(*self) {
				Some(id) => id.into(),
				None => format!("<unresolved id #{}>", Into::<usize>::into(*self)).into_bytes().into(),
			};

			let ident = String::from_utf8_lossy(&ident);
			let ident = ident.escape_debug();

			color::Fg(color::Green, ident).fmt(f)
		}
	}
}