to_animated_value.rs (1487B)
1 /* This Source Code Form is subject to the terms of the Mozilla Public 2 * License, v. 2.0. If a copy of the MPL was not distributed with this 3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */ 4 5 use crate::animate::AnimationFieldAttrs; 6 use crate::{cg, to_computed_value}; 7 use proc_macro2::TokenStream; 8 use syn::DeriveInput; 9 use synstructure::BindStyle; 10 11 pub fn derive(input: DeriveInput) -> TokenStream { 12 let trait_impl = |from_body, to_body| { 13 quote! { 14 #[inline] 15 fn from_animated_value(from: Self::AnimatedValue) -> Self { 16 #from_body 17 } 18 19 #[inline] 20 fn to_animated_value(self, context: &crate::values::animated::Context) -> Self::AnimatedValue { 21 #to_body 22 } 23 } 24 }; 25 26 to_computed_value::derive_to_value( 27 input, 28 parse_quote!(crate::values::animated::ToAnimatedValue), 29 parse_quote!(AnimatedValue), 30 BindStyle::Move, 31 |binding| { 32 let attrs = cg::parse_field_attrs::<AnimationFieldAttrs>(&binding.ast()); 33 to_computed_value::ToValueAttrs { 34 field_bound: attrs.field_bound, 35 no_field_bound: false, 36 } 37 }, 38 |binding| quote!(crate::values::animated::ToAnimatedValue::from_animated_value(#binding)), 39 |binding| quote!(crate::values::animated::ToAnimatedValue::to_animated_value(#binding, context)), 40 trait_impl, 41 ) 42 }