feat: code quality improvements for core

This commit is contained in:
Jonathan Kelley committed 2021-07-15 04:09:28 -04:00
1 parent 37ed4bed8c
commit 00231adfa2
12 files changed
+124 -758

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+20 -41
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@@ -1,6 +1,4 @@
use crate::hooklist::HookList;
use crate::{arena::SharedArena, innerlude::*};
use crate::innerlude::*;
use std::{
any::{Any, TypeId},
cell::{Cell, RefCell},
@@ -10,17 +8,15 @@ use std::{
rc::Rc,
};
// We need to pin the hook so it doesn't move as we initialize the list of hooks
type Hook = Box<dyn std::any::Any>;
type EventChannel = Rc<dyn Fn()>;
pub type WrappedCaller = dyn for<'b> Fn(&'b Scope) -> VNode<'b>;
/// Every component in Dioxus is represented by a `Scope`.
///
/// Scopes contain the state for hooks, the component's props, and other lifecycle information.
///
/// Scopes are allocated in a generational arena. As components are mounted/unmounted, they will replace slots of dead components.
/// The actual contents of the hooks, though, will be allocated with the standard allocator. These should not allocate as frequently.
///
/// We expose the `Scope` type so downstream users can traverse the Dioxus VirtualDOM for whatever
/// usecase they might have.
pub struct Scope {
// Book-keeping about the arena
pub(crate) parent_idx: Option<ScopeId>,
@@ -47,13 +43,19 @@ pub struct Scope {
// Tasks
pub(crate) task_submitter: TaskSubmitter,
pub(crate) suspended_tasks: Vec<*mut Pin<Box<dyn Future<Output = VNode<'static>>>>>,
// A reference to the list of components.
// This lets us traverse the component list whenever we need to access our parent or children.
pub(crate) arena_link: SharedArena,
}
// The type of the channel function
type EventChannel = Rc<dyn Fn()>;
// The type of closure that wraps calling components
pub type WrappedCaller = dyn for<'b> Fn(&'b Scope) -> VNode<'b>;
// The type of task that gets sent to the task scheduler
pub type FiberTask = Pin<Box<dyn Future<Output = EventTrigger>>>;
impl Scope {
@@ -74,14 +76,7 @@ impl Scope {
child_nodes: &'creator_node [VNode<'creator_node>],
task_submitter: TaskSubmitter,
) -> Self {
log::debug!(
"New scope created, height is {}, idx is {:?}",
height,
arena_idx
);
let child_nodes = unsafe { std::mem::transmute(child_nodes) };
Self {
child_nodes,
caller,
@@ -97,15 +92,14 @@ impl Scope {
shared_contexts: Default::default(),
listeners: Default::default(),
descendents: Default::default(),
suspended_tasks: Default::default(),
}
}
pub fn update_caller<'creator_node>(&mut self, caller: Rc<WrappedCaller>) {
pub(crate) fn update_caller<'creator_node>(&mut self, caller: Rc<WrappedCaller>) {
self.caller = caller;
}
pub fn update_children<'creator_node>(
pub(crate) fn update_children<'creator_node>(
&mut self,
child_nodes: &'creator_node [VNode<'creator_node>],
) {
@@ -113,13 +107,14 @@ impl Scope {
self.child_nodes = child_nodes;
}
pub fn run_scope<'sel>(&'sel mut self) -> Result<()> {
pub(crate) fn run_scope<'sel>(&'sel mut self) -> Result<()> {
// Cycle to the next frame and then reset it
// This breaks any latent references, invalidating every pointer referencing into it.
// Remove all the outdated listeners
// This is a very dangerous operation
self.frames.next().bump.reset();
log::debug!("clearing listeners!");
// Remove all the outdated listeners
self.listeners.borrow_mut().clear();
unsafe { self.hooks.reset() };
@@ -133,17 +128,6 @@ impl Scope {
Ok(())
}
/// Progress a suspended node
pub fn progress_suspended(&mut self) -> Result<()> {
// load the hook
// downcast to our special state
// run just this hook
// create a new vnode
// diff this new vnode with the original suspended vnode
Ok(())
}
// this is its own function so we can preciesly control how lifetimes flow
unsafe fn call_user_component<'a>(&'a self, caller: &WrappedCaller) -> VNode<'static> {
let new_head: VNode<'a> = caller(self);
@@ -153,7 +137,7 @@ impl Scope {
// A safe wrapper around calling listeners
// calling listeners will invalidate the list of listeners
// The listener list will be completely drained because the next frame will write over previous listeners
pub fn call_listener(&mut self, trigger: EventTrigger) -> Result<()> {
pub(crate) fn call_listener(&mut self, trigger: EventTrigger) -> Result<()> {
let EventTrigger {
real_node_id,
event,
@@ -165,11 +149,6 @@ impl Scope {
return Ok(());
}
// todo: implement scanning for outdated events
// Convert the raw ptr into an actual object
// This operation is assumed to be safe
log::debug!(
"There are {:?} listeners associated with this scope {:#?}",
self.listeners.borrow().len(),
@@ -178,7 +157,6 @@ impl Scope {
let listners = self.listeners.borrow_mut();
// let listener = listners.get(trigger);
let raw_listener = listners.iter().find(|(domptr, _)| {
let search = unsafe { &**domptr };
let search_id = search.get();
@@ -201,7 +179,7 @@ impl Scope {
Ok(())
}
pub fn submit_task(&self, task: FiberTask) {
pub(crate) fn submit_task(&self, task: FiberTask) {
log::debug!("Task submitted into scope");
(self.task_submitter)(task);
}
@@ -221,6 +199,7 @@ impl Scope {
self.frames.cur_frame()
}
/// Get the root VNode of this component
#[inline]
pub fn root<'a>(&'a self) -> &'a VNode<'a> {
&self.frames.cur_frame().head_node