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Optimize parse+extend to make only one proc macro bridge call #203

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merged 1 commit into from Dec 28, 2021
Merged

Optimize parse+extend to make only one proc macro bridge call #203

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3 changes: 2 additions & 1 deletion src/runtime.rs
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@@ -1,5 +1,6 @@
use crate::{IdentFragment, ToTokens, TokenStreamExt};
use std::fmt;
use std::iter;
use std::ops::BitOr;

pub use proc_macro2::*;
Expand Down Expand Up @@ -178,7 +179,7 @@ pub fn push_group_spanned(

pub fn parse(tokens: &mut TokenStream, s: &str) {
let s: TokenStream = s.parse().expect("invalid token stream");
tokens.extend(s);
tokens.extend(iter::once(s));
}

pub fn parse_spanned(tokens: &mut TokenStream, span: Span, s: &str) {
Expand Down