Function call2_for_syn::call2

pub fn call2<T, P: FnMut(ParseStream) -> T>(input: TokenStream, parser: P) -> T

Analogous to syn::parse2 and syn::parse::ParseBuffer::call.

Example

use {
    call2_for_syn::call2,
    quote::quote,
    syn::{Ident, Token},
};

let (hello, world) = call2::<syn::Result<_>, _>(quote!(Hello world!), |input| {
    let hello: Ident = input.parse()?;
    let world: Ident = input.parse()?;
    input.parse::<Token![!]>()?;
    Ok((hello, world))
})?;
assert_eq!(format!("{}", hello), "Hello");
assert_eq!(format!("{}", world), "world");