proc_macro_tool

Function pfunc_lossless

Source 
pub fn pfunc_lossless<'a>(
    stream: impl IntoIterator<Item = TokenTree>,
    proc_input: bool,
    names: impl AsRef<[&'a str]>,
    f: impl FnMut(Ident, Group) -> TokenStream,
) -> TokenStream
Expand description

Like pfunc, but it’s lossless when no changes are made