75 lines
1.7 KiB
Rust
75 lines
1.7 KiB
Rust
//! Helper module which defines `FnArgs` to make function calling easier.
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#![allow(non_snake_case)]
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use crate::any::{Any, Dynamic};
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use crate::stdlib::{string::String, vec, vec::Vec};
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#[cfg(not(feature = "no_index"))]
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use crate::engine::Array;
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/// Trait that represent arguments to a function call.
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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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}
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macro_rules! impl_std_args {
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($($p:ty),*) => {
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$(
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impl FuncArgs for $p {
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fn into_vec(self) -> Vec<Dynamic> {
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vec![self.into_dynamic()]
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}
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}
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)*
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};
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}
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impl_std_args!(String, char, bool);
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#[cfg(not(feature = "no_index"))]
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impl_std_args!(Array);
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#[cfg(not(feature = "only_i32"))]
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#[cfg(not(feature = "only_i64"))]
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impl_std_args!(u8, i8, u16, i16, u32, i32, u64, i64);
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#[cfg(feature = "only_i32")]
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impl_std_args!(i32);
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#[cfg(feature = "only_i64")]
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impl_std_args!(i64);
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#[cfg(not(feature = "no_float"))]
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impl_std_args!(f32, f64);
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macro_rules! impl_args {
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($($p:ident),*) => {
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impl<$($p: Any + Clone),*> FuncArgs for ($($p,)*)
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{
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fn into_vec(self) -> Vec<Dynamic> {
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let ($($p,)*) = self;
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#[allow(unused_variables, unused_mut)]
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let mut v = Vec::new();
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$(v.push($p.into_dynamic());)*
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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) => {
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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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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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