2017-12-20 22:16:53 +01:00
|
|
|
//! Helper module which defines `FnArgs`
|
|
|
|
//! to make function calling easier.
|
|
|
|
|
2020-02-25 08:02:27 +01:00
|
|
|
use crate::any::{Any, Variant};
|
2017-12-20 22:16:53 +01:00
|
|
|
|
|
|
|
pub trait FunArgs<'a> {
|
2020-02-25 08:02:27 +01:00
|
|
|
fn into_vec(self) -> Vec<&'a mut Variant>;
|
2017-12-20 22:16:53 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
macro_rules! impl_args {
|
|
|
|
($($p:ident),*) => {
|
2020-02-25 08:02:27 +01:00
|
|
|
impl<'a, $($p: Any + Clone),*> FunArgs<'a> for ($(&'a mut $p,)*)
|
2017-12-20 22:16:53 +01:00
|
|
|
{
|
2020-02-25 08:02:27 +01:00
|
|
|
fn into_vec(self) -> Vec<&'a mut Variant> {
|
2017-12-20 22:16:53 +01:00
|
|
|
let ($($p,)*) = self;
|
|
|
|
|
2019-09-18 12:21:07 +02:00
|
|
|
#[allow(unused_variables, unused_mut)]
|
2017-12-20 22:16:53 +01:00
|
|
|
let mut v = Vec::new();
|
2020-02-25 08:02:27 +01:00
|
|
|
$(v.push($p as &mut Variant);)*
|
2017-12-20 22:16:53 +01:00
|
|
|
|
|
|
|
v
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl_args!(@pop $($p),*);
|
|
|
|
};
|
|
|
|
(@pop) => {
|
|
|
|
};
|
|
|
|
(@pop $head:ident $(, $tail:ident)*) => {
|
|
|
|
impl_args!($($tail),*);
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg_attr(rustfmt, rustfmt_skip)]
|
|
|
|
impl_args!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S);
|