43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
use async_trait::async_trait;
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use dioxus_core::ScopeId;
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use dioxus_html::prelude::{EvalError, EvalProvider, Evaluator};
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use std::rc::Rc;
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/// Provides the SSREvalProvider through [`cx.provide_context`].
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pub fn init_eval() {
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let provider: Rc<dyn EvalProvider> = Rc::new(SSREvalProvider {});
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ScopeId::ROOT.provide_context(provider);
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}
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/// Reprents the ssr-target's provider of evaluators.
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pub struct SSREvalProvider;
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impl EvalProvider for SSREvalProvider {
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fn new_evaluator(&self, _: String) -> Result<Box<dyn Evaluator>, EvalError> {
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Ok(Box::new(SSREvaluator) as Box<dyn Evaluator + 'static>)
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}
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}
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/// Represents a ssr-target's JavaScript evaluator.
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pub struct SSREvaluator;
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// In ssr rendering we never run or resolve evals.
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#[async_trait(?Send)]
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impl Evaluator for SSREvaluator {
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/// Runs the evaluated JavaScript.
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async fn join(&self) -> Result<serde_json::Value, EvalError> {
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std::future::pending::<()>().await;
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unreachable!()
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}
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/// Sends a message to the evaluated JavaScript.
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fn send(&self, _el: serde_json::Value) -> Result<(), EvalError> {
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Ok(())
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}
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/// Gets an UnboundedReceiver to receive messages from the evaluated JavaScript.
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async fn recv(&mut self) -> Result<serde_json::Value, EvalError> {
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std::future::pending::<()>().await;
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unreachable!()
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}
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}
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