102 lines
2.4 KiB
Rust
102 lines
2.4 KiB
Rust
use crate::{nodes::RenderReturn, Element};
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use std::{any::Any, ops::Deref, panic::AssertUnwindSafe};
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/// A boxed version of AnyProps that can be cloned
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pub(crate) struct BoxedAnyProps {
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inner: Box<dyn AnyProps>,
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}
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impl BoxedAnyProps {
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pub fn new(inner: impl AnyProps + 'static) -> Self {
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Self {
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inner: Box::new(inner),
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}
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}
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}
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impl Deref for BoxedAnyProps {
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type Target = dyn AnyProps;
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fn deref(&self) -> &Self::Target {
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&*self.inner
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}
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}
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impl Clone for BoxedAnyProps {
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fn clone(&self) -> Self {
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Self {
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inner: self.inner.duplicate(),
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}
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}
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}
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/// A trait that essentially allows VComponentProps to be used generically
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pub(crate) trait AnyProps {
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fn render(&self) -> RenderReturn;
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fn memoize(&self, other: &dyn Any) -> bool;
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fn props(&self) -> &dyn Any;
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fn duplicate(&self) -> Box<dyn AnyProps>;
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}
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pub(crate) struct VProps<P> {
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pub render_fn: fn(P) -> Element,
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pub memo: fn(&P, &P) -> bool,
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pub props: P,
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pub name: &'static str,
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}
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impl<P> VProps<P> {
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pub(crate) fn new(
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render_fn: fn(P) -> Element,
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memo: fn(&P, &P) -> bool,
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props: P,
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name: &'static str,
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) -> Self {
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Self {
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render_fn,
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memo,
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props,
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name,
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}
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}
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}
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impl<P: Clone + 'static> AnyProps for VProps<P> {
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fn memoize(&self, other: &dyn Any) -> bool {
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match other.downcast_ref::<P>() {
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Some(other) => (self.memo)(&self.props, other),
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None => false,
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}
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}
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fn props(&self) -> &dyn Any {
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&self.props
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}
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fn render(&self) -> RenderReturn {
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let res = std::panic::catch_unwind(AssertUnwindSafe(move || {
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// Call the render function directly
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(self.render_fn)(self.props.clone())
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}));
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match res {
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Ok(Some(e)) => RenderReturn::Ready(e),
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Ok(None) => RenderReturn::default(),
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Err(err) => {
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let component_name = self.name;
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tracing::error!("Error while rendering component `{component_name}`: {err:?}");
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RenderReturn::default()
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}
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}
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}
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fn duplicate(&self) -> Box<dyn AnyProps> {
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Box::new(Self {
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render_fn: self.render_fn,
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memo: self.memo,
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props: self.props.clone(),
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name: self.name,
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})
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}
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}
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