rustmotion_core/
macros.rs

1/// Macro to implement common traits by delegating to embedded config fields.
2///
3/// Usage:
4/// ```ignore
5/// impl_traits!(Text {
6///     Animatable => animation,  // Vec<AnimationEffect> directly
7///     Timed => timing,
8///     Styled => style,          // CssStyle
9/// });
10/// ```
11///
12/// This generates both the object-safe accessor trait AND the mutable
13/// builder trait (e.g. `Styled` + `StyledMut`).
14#[macro_export]
15macro_rules! impl_traits {
16    ($type:ty { $($trait_name:ident => $field:ident),* $(,)? }) => {
17        $(
18            $crate::impl_traits!(@single $type, $trait_name, $field);
19        )*
20    };
21
22    (@single $type:ty, Animatable, $_field:ident) => {
23        impl $crate::traits::Animatable for $type {
24            fn animation_effects(&self) -> &[$crate::schema::AnimationEffect] {
25                &self.style.animation
26            }
27
28            fn timeline_steps(&self) -> &[$crate::schema::TimelineStep] {
29                &self.timeline
30            }
31        }
32    };
33
34    (@single $type:ty, Timed, $field:ident) => {
35        impl $crate::traits::Timed for $type {
36            fn timing(&self) -> (Option<f64>, Option<f64>) {
37                (self.$field.start_at, self.$field.end_at)
38            }
39        }
40    };
41
42    (@single $type:ty, Styled, $field:ident) => {
43        impl $crate::traits::Styled for $type {
44            fn style_config(&self) -> &$crate::css::CssStyle {
45                &self.$field
46            }
47        }
48
49        impl $crate::traits::StyledMut for $type {
50            fn style_config_mut(&mut self) -> &mut $crate::css::CssStyle {
51                &mut self.$field
52            }
53        }
54    };
55}
rustmotion_core/macros.rs

rustmotion_core/
macros.rs
