mirror of
https://github.com/servo/servo.git
synced 2025-07-10 08:53:41 +01:00
44 lines
1.5 KiB
Rust
44 lines
1.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
use cg;
|
|
use quote;
|
|
use syn;
|
|
use synstructure::BindStyle;
|
|
|
|
pub fn derive(input: syn::DeriveInput) -> quote::Tokens {
|
|
let name = &input.ident;
|
|
let trait_path = &["values", "animated", "ToAnimatedValue"];
|
|
let (impl_generics, ty_generics, mut where_clause, animated_value_type) =
|
|
cg::fmap_trait_parts(&input, trait_path, "AnimatedValue");
|
|
|
|
let to_body = cg::fmap_match(&input, BindStyle::Move, |binding| {
|
|
where_clause.add_trait_bound(&binding.field.ty);
|
|
quote!(::values::animated::ToAnimatedValue::to_animated_value(#binding))
|
|
});
|
|
let from_body = cg::fmap_match(&input, BindStyle::Move, |binding| {
|
|
quote!(::values::animated::ToAnimatedValue::from_animated_value(#binding))
|
|
});
|
|
|
|
quote! {
|
|
impl #impl_generics ::values::animated::ToAnimatedValue for #name #ty_generics #where_clause {
|
|
type AnimatedValue = #animated_value_type;
|
|
|
|
#[allow(unused_variables)]
|
|
#[inline]
|
|
fn to_animated_value(self) -> Self::AnimatedValue {
|
|
match self {
|
|
#to_body
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn from_animated_value(animated: Self::AnimatedValue) -> Self {
|
|
match animated {
|
|
#from_body
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|