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use crate::syntax::symbol::Segment;
use crate::syntax::{Lifetimes, NamedType, Pair, Symbol};
use proc_macro2::{Ident, Span};
use std::fmt::{self, Display};
use std::iter;
use syn::ext::IdentExt;
use syn::parse::{Error, Parser, Result};
use syn::punctuated::Punctuated;
#[derive(Clone)]
pub(crate) struct ForeignName {
text: String,
}
impl Pair {
pub(crate) fn to_symbol(&self) -> Symbol {
let segments = self
.namespace
.iter()
.map(|ident| ident as &dyn Segment)
.chain(iter::once(&self.cxx as &dyn Segment));
Symbol::from_idents(segments)
}
}
impl NamedType {
pub(crate) fn new(rust: Ident) -> Self {
let generics = Lifetimes {
lt_token: None,
lifetimes: Punctuated::new(),
gt_token: None,
};
NamedType { rust, generics }
}
}
impl ForeignName {
pub(crate) fn parse(text: &str, span: Span) -> Result<Self> {
// TODO: support C++ names containing whitespace (`unsigned int`) or
// non-alphanumeric characters (`operator++`).
match Ident::parse_any.parse_str(text) {
Ok(ident) => {
let text = ident.to_string();
Ok(ForeignName { text })
}
Err(err) => Err(Error::new(span, err)),
}
}
}
impl Display for ForeignName {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str(&self.text)
}
}
impl PartialEq<str> for ForeignName {
fn eq(&self, rhs: &str) -> bool {
self.text == rhs
}
}
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