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use std::{fmt, hash};
use proc_macro2::{Ident, Span};
use syn::ext::IdentExt;
pub mod ast;
pub mod check;
pub mod context;
pub mod error;
pub mod set;
pub mod typed;
pub mod visit;
#[derive(Clone, Debug)]
pub enum Name {
Spanned(Ident),
Spanless(String),
}
impl Name {
pub fn span(&self) -> Option<Span> {
match self {
Self::Spanned(i) => Some(i.span()),
Self::Spanless(_) => None,
}
}
pub fn as_ident(self, span: Span) -> Ident {
match self {
Self::Spanned(i) => i,
Self::Spanless(s) => Ident::new(&s, span),
}
}
}
impl PartialEq for Name {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(Self::Spanned(me), Self::Spanned(them)) => me == them,
(Self::Spanned(me), Self::Spanless(them)) => me.unraw() == them,
(Self::Spanless(me), Self::Spanned(them)) => them.unraw() == me,
(Self::Spanless(me), Self::Spanless(them)) => me == them,
}
}
}
impl<T: AsRef<str>> PartialEq<T> for Name {
fn eq(&self, other: &T) -> bool {
match self {
Name::Spanned(me) => me.unraw() == other,
Name::Spanless(me) => me == other.as_ref(),
}
}
}
impl Eq for Name {}
impl hash::Hash for Name {
fn hash<H: hash::Hasher>(&self, state: &mut H) {
match self {
Self::Spanned(i) => i.unraw().to_string().hash(state),
Self::Spanless(s) => s.hash(state),
}
}
}
impl fmt::Display for Name {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Name::Spanned(i) => i.fmt(f),
Name::Spanless(s) => s.fmt(f),
}
}
}
impl From<Ident> for Name {
fn from(ident: Ident) -> Self {
Self::Spanned(ident)
}
}
impl From<String> for Name {
fn from(string: String) -> Self {
Self::Spanless(string)
}
}
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