Macro list 

macro_rules! list {
    (@push $ret:ident, $item:expr) => { ... };
    (@push $ret:ident, @ $item:expr) => { ... };
    (@push $ret:ident, $item:expr, $($items:tt)+) => { ... };
    (@push $ret:ident, @ $item:expr, $($items:tt)+) => { ... };
    (, $($items:tt)+) => { ... };
    ($($items:tt)+) => { ... };
    () => { ... };
}

Provides a lisp-like syntax for constructing lists.

Example

use tulisp::{list, TulispObject, Error};

fn main() -> Result<(), Error> {
    // Create a list with 3 values inside.
    let list1 = list!(
        ,10.into()
        ,"hello".into()
        ,5.2.into()
    )?;
    assert_eq!(
        list1.to_string(),
        r#"(10 "hello" 5.2)"#
    );

    // Create a list that splices `list1` in the second pos.
    let list2 = list!(
        ,20.into()
        ,@list1.clone()
        ,list1
        ,"world".into()
    )?;
    assert_eq!(
        list2.to_string(),
        r#"(20 10 "hello" 5.2 (10 "hello" 5.2) "world")"#
    );

    Ok(())
}