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//!
//!
use super::SpanExt;
use proc_macro2::{Literal, Punct, Spacing, Span, TokenTree};
use syn::punctuated::Pair;
use syn::*;

/// Creates a comment from `s`.
pub fn comment<S>(s: S) -> Attribute
where
    S: AsRef<str>,
{
    let span = Span::call_site();

    Attribute {
        style: AttrStyle::Outer,
        bracket_token: span.as_token(),
        pound_token: span.as_token(),
        path: Path {
            leading_colon: None,
            segments: vec![Pair::End(PathSegment {
                ident: Ident::new("doc", span),
                arguments: Default::default(),
            })]
            .into_iter()
            .collect(),
        },
        tokens: vec![
            TokenTree::Punct(Punct::new('=', Spacing::Alone)),
            TokenTree::Literal(Literal::string(s.as_ref())),
        ]
        .into_iter()
        .collect(),
    }
}