Macro parsel::try_parse_quote

macro_rules! try_parse_quote {
    ($($tt:tt)*) => { ... };
}

Similar to syn::parse_quote!, but instead of panicking, it returns an Err if the inferred type fails to parse from the specified token stream.

use core::iter::FromIterator;
use parsel::{try_parse_quote, Result};
use parsel::ast::{Lit, Many};

fn try_parse_literals(bit: bool, number: u64) -> Result<Many<Lit>> {
    let ast: Many<Lit> = try_parse_quote!(#bit "some text" #number);
    Ok(ast)
}

let actual: Many<Lit> = try_parse_literals(true, 76192)?;
let expected: Many<Lit> = Many::from_iter([
    Lit::from(true),
    Lit::from("some text"),
    Lit::from(76192_u128),
]);

assert_eq!(actual, expected);