2020-03-08 12:54:02 +01:00
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//! Helper module which defines `FnArgs` to make function calling easier.
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2017-12-20 22:16:53 +01:00
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2020-03-10 07:09:05 +01:00
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use crate::any::{Any, Dynamic};
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2017-12-20 22:16:53 +01:00
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2020-03-04 15:00:01 +01:00
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/// Trait that represent arguments to a function call.
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2020-03-10 07:09:05 +01:00
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pub trait FuncArgs {
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/// Convert to a `Vec` of `Dynamic` arguments.
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fn into_vec(self) -> Vec<Dynamic>;
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2017-12-20 22:16:53 +01:00
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}
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2020-03-10 07:09:05 +01:00
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impl<T: Any> FuncArgs for &mut Vec<T> {
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fn into_vec(self) -> Vec<Dynamic> {
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self.iter_mut().map(|x| x.into_dynamic()).collect()
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2020-03-04 15:00:01 +01:00
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}
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}
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2017-12-20 22:16:53 +01:00
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macro_rules! impl_args {
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($($p:ident),*) => {
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2020-03-10 07:09:05 +01:00
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impl<$($p: Any + Clone),*> FuncArgs for ($($p,)*)
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2017-12-20 22:16:53 +01:00
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{
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2020-03-10 07:09:05 +01:00
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fn into_vec(self) -> Vec<Dynamic> {
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2017-12-20 22:16:53 +01:00
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let ($($p,)*) = self;
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2019-09-18 12:21:07 +02:00
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#[allow(unused_variables, unused_mut)]
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2017-12-20 22:16:53 +01:00
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let mut v = Vec::new();
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2020-03-10 07:09:05 +01:00
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$(v.push($p.into_dynamic());)*
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2017-12-20 22:16:53 +01:00
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v
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}
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}
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impl_args!(@pop $($p),*);
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};
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(@pop) => {
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};
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(@pop $head:ident $(, $tail:ident)*) => {
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impl_args!($($tail),*);
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};
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}
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#[cfg_attr(rustfmt, rustfmt_skip)]
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2020-03-10 07:09:05 +01:00
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impl_args!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T);
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