88af3e7eff
Hotreload the contents of for loops, if chains, component bodies, props, attributes, and any literals discovered in rsx! Add a TUI renderer to the CLI. Improve the CLI build system to be async and parallel. Refactor RSX to allow partial expansion of expressions. Merge autofmt implementations for consistency. Merge the representation of elements and components under the hood. Add a diagnostics system for rsx for improved error messages. Drop interprocess and move to websockets for communication between the CLI and the server. Assign IDs to nodes and attributes in a stable way to be used in non compiler contexts. Add hotreloading to any body of component/for loop/if chain/etc. --------- Co-authored-by: Evan Almloff <evanalmloff@gmail.com> Co-authored-by: Liam Mitchell <liamkarlmitchell@gmail.com>
117 lines
3.3 KiB
Rust
117 lines
3.3 KiB
Rust
use dioxus_core::prelude::{provide_root_context, try_consume_context};
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use std::{any::Any, cell::RefCell, collections::HashMap, panic::Location, rc::Rc};
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mod memo;
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pub use memo::*;
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mod signal;
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pub use signal::*;
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use crate::Signal;
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/// The context for global signals
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#[derive(Clone)]
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pub struct GlobalSignalContext {
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signal: Rc<RefCell<HashMap<GlobalKey<'static>, Box<dyn Any>>>>,
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}
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/// A key used to identify a signal in the global signal context
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#[derive(Clone, Debug, PartialEq, Eq, Hash)]
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pub struct GlobalKey<'a> {
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// We create an extra wrapper around location so we can construct it manually for hot reloading
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file: &'a str,
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line: u32,
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column: u32,
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}
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impl<'a> GlobalKey<'a> {
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/// Create a new key from a location
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pub const fn new(key: &'a Location<'a>) -> Self {
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GlobalKey {
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file: key.file(),
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line: key.line(),
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column: key.column(),
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}
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}
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/// Create a new key from a static string
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#[allow(unused)]
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pub const fn new_from_str(key: &'a str) -> Self {
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GlobalKey {
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file: key,
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line: 0,
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column: 0,
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}
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}
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}
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impl From<&'static str> for GlobalKey<'static> {
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fn from(key: &'static str) -> Self {
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Self::new_from_str(key)
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}
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}
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impl From<&'static Location<'static>> for GlobalKey<'static> {
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fn from(key: &'static Location<'static>) -> Self {
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Self::new(key)
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}
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}
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impl GlobalSignalContext {
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/// Get a signal with the given string key
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/// The key will be converted to a UUID with the appropriate internal namespace
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pub fn get_signal_with_key<T>(&self, key: &str) -> Option<Signal<T>> {
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let key = GlobalKey::new_from_str(key);
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self.signal.borrow().get(&key).map(|f| {
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*f.downcast_ref::<Signal<T>>().unwrap_or_else(|| {
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panic!(
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"Global signal with key {:?} is not of the expected type. Keys are {:?}",
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key,
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self.signal.borrow().keys()
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)
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})
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})
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}
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}
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/// Get the global context for signals
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pub fn get_global_context() -> GlobalSignalContext {
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match try_consume_context() {
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Some(context) => context,
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None => {
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let context = GlobalSignalContext {
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signal: Rc::new(RefCell::new(HashMap::new())),
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};
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provide_root_context(context)
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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/// Test that keys of global signals are correctly generated and different from one another.
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/// We don't want signals to merge, but we also want them to use both string IDs and memory addresses.
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#[test]
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fn test_global_keys() {
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// we're using consts since it's harder than statics due to merging - these won't be merged
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const MYSIGNAL: GlobalSignal<i32> = GlobalSignal::new(|| 42);
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const MYSIGNAL2: GlobalSignal<i32> = GlobalSignal::new(|| 42);
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const MYSIGNAL3: GlobalSignal<i32> = GlobalSignal::with_key(|| 42, "custom-keyed");
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let a = MYSIGNAL.key();
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let b = MYSIGNAL.key();
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let c = MYSIGNAL.key();
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assert_eq!(a, b);
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assert_eq!(b, c);
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let d = MYSIGNAL2.key();
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assert_ne!(a, d);
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let e = MYSIGNAL3.key();
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assert_ne!(a, e);
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}
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}
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