Macro aoko::struct_new

macro_rules! struct_new {
    ($vis : vis struct $s_name : ident ;) => { ... };
    ($(#[$attr : meta]) * $vis : vis struct $s_name : ident
 $(< $($generic : tt), * >) ?
 $(($($p_vis : vis $p_name : ident : $p_type : ty), * $(,) ?)) ?
 $(where $($id : tt : $limit : tt), *) ?
 { $($field_vis : vis $field : ident : $type : ty = $val : expr), * $(,) ? }
 $($tail : tt) *) => { ... };
    () => { ... };
}

Struct::new(...): define parameters and assigning user-defined values to fields directly.

Principles

Text replacement, automatic function generation.

Examples

use aoko::{struct_new, assert_eqs};
 
struct_new!(
    #[derive(Debug)]
    pub struct A<'a, T>(pub foo: T,) where T: Copy, T: Ord {
        pub bar: &'a str = "bar",
    }
    struct B {}
    struct C;
);
 
let test = A::new("foo");
 
assert_eqs!(
    "foo", test.foo;
    "bar", test.bar;
    format!("{:?}", test), "A { foo: \"foo\", bar: \"bar\" }";
);