git.iko.soy/dodrio
on 3b3b186 help sign in
f1ba4fd
swap
0 ahead, 175 behind
.travis.yml+9−19
since splitsnapshots
unifiedsplit
@@ -25,30 +25,20 @@ matrix:
25 - name: "build (beta)"
25 - name: "build (beta)"
26 rust: beta
26 rust: beta
27 script: INSTALL=1 ./build.sh
27 script: INSTALL=1 ./build.sh
28+ - name: "build (nightly)"
29+ rust: nightly
30+ script: INSTALL=1 ./build.sh
28 - name: "headless browser tests (firefox)"
31 - name: "headless browser tests (firefox)"
29 rust: stable
32 rust: stable
30 addons:
33 addons:
31 firefox: latest
34 firefox: latest
32− script: wasm-pack test --firefox --headless -- --features xxx-unstable-internal-use-only
35+ script: wasm-pack test --firefox --headless
36+ - name: "headless browser tests (chrome)"
37+ rust: stable
38+ addons:
39+ chrome: stable
40+ script: wasm-pack test --chrome --headless
33 - name: "native tests"
41 - name: "native tests"
34 rust: stable
42 rust: stable
35 install: echo "no install"
43 install: echo "no install"
36 script: cargo test --all
44 script: cargo test --all
37−
38− # TODO: A bug in `rustc` is making `js-sys` broken on nightly:
39− # https://github.com/rust-lang/rust/issues/69315
40− # - name: "build (nightly)"
41− # rust: nightly
42− # script: INSTALL=1 ./build.sh
43− # - name: "check native benches"
44− # rust: nightly
45− # install: echo "no install"
46− # script: cargo check --benches --features xxx-unstable-internal-use-only
47−
48− # TODO: `chromedriver` is complaining about ports or something. Temporarily
49− # disable in CI until we figure it out.
50− # - name: "headless browser tests (chrome)"
51− # rust: stable
52− # addons:
53− # chrome: stable
54− # script: wasm-pack test --chrome --headless -- --features xxx-unstable-internal-use-only
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Cargo.toml+18−36
@@ -8,20 +8,11 @@ license = "MPL-2.0"
8name = "dodrio"
8name = "dodrio"
9readme = "./README.md"
9readme = "./README.md"
10repository = "https://github.com/fitzgen/dodrio"
10repository = "https://github.com/fitzgen/dodrio"
11−version = "0.2.0"
11+version = "0.1.0"
12
12
13[badges]
13[badges]
14travis-ci = { repository = "fitzgen/dodrio" }
14travis-ci = { repository = "fitzgen/dodrio" }
15
15
16−[lib]
17−path = "src/lib.rs"
18−bench = false
19−
20−[[test]]
21−name = "web"
22−path = "tests/web/main.rs"
23−required-features = ["xxx-unstable-internal-use-only"]
24−
25[[bench]]
16[[bench]]
26name = "benches"
17name = "benches"
27path = "benches/benches.rs"
18path = "benches/benches.rs"
@@ -29,31 +20,22 @@ harness = false
29required-features = ["xxx-unstable-internal-use-only"]
20required-features = ["xxx-unstable-internal-use-only"]
30
21
31[features]
22[features]
32−# Don't rely on this feature! Its behavior will change and it could go away at
33−# any time. This enables monkey-patching DOM methods so that we wrap them and
34−# trace what DOM methods are used and how many times they are invoked when
35−# applying our emitted change lists to the physical DOM. This is useful for
36−# evaluating the differences between how Dodrio applies changes from virtual
37−# nodes to the physical DOM versus how other virtual DOM libraries do the same.
38−xxx-unstable-strace = []
39−
40# Don't use this feature! It only exists for exposing otherwise-internal APIs
23# Don't use this feature! It only exists for exposing otherwise-internal APIs
41# for testing and benchmarks.
24# for testing and benchmarks.
42xxx-unstable-internal-use-only = []
25xxx-unstable-internal-use-only = []
43
26
44[dependencies]
27[dependencies]
45−bumpalo = "2.6.0"
28+bumpalo = "2.3.0"
46−cfg-if = "0.1.10"
29+cfg-if = "0.1.7"
30+futures = "0.1.26"
31+wasm-bindgen = "0.2.39"
32+wasm-bindgen-futures = "0.3.16"
33+js-sys = "0.3.16"
47fxhash = "0.2.1"
34fxhash = "0.2.1"
48−js-sys = "0.3.32"
49−log = { version = "0.4.11", optional = true }
35+log = { version = "0.4.6", optional = true }
50−longest-increasing-subsequence = "0.1.0"
51−serde = { version = "1.0.114", optional = true }
52−wasm-bindgen = "0.2.55"
53−wasm-bindgen-futures = "0.4.5"
54
36
55[dependencies.web-sys]
37[dependencies.web-sys]
56−version = "0.3.32"
38+version = "0.3.16"
57features = [
39features = [
58 "console",
40 "console",
59 "Document",
41 "Document",
@@ -64,14 +46,13 @@ features = [
64]
46]
65
47
66[dev-dependencies]
48[dev-dependencies]
67−console_log = "0.2.0"
49+console_log = "0.1.2"
68−dodrio-js-api = { version = "=0.2.0", path = "./crates/js-api" }
50+dodrio-js-api = { version = "=0.1.0", path = "./crates/js-api" }
69−futures = "0.3.5"
70−log = "0.4.11"
51+log = "0.4.6"
71−wasm-bindgen-test = "0.3.5"
52+wasm-bindgen-test = "0.2.39"
72
53
73[dev-dependencies.web-sys]
54[dev-dependencies.web-sys]
74−version = "0.3.32"
55+version = "0.3.16"
75features = [
56features = [
76 "Attr",
57 "Attr",
77 "EventTarget",
58 "EventTarget",
@@ -81,10 +62,11 @@ features = [
81]
62]
82
63
83[target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
64[target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
84−criterion = "0.3.3"
65+criterion = "0.2.10"
85
66
67+[lib]
68+path = "src/lib.rs"
86−[profile.bench]
69+bench = false
87−debug = true
88
70
89[profile.release]
71[profile.release]
90incremental = false
72incremental = false
README.md+6−13
@@ -31,10 +31,12 @@ struct Hello {
31}
31}
32
32
33impl Render for Hello {
33impl Render for Hello {
34− fn render<'a>(&self, cx: &mut RenderContext<a>) -> Node<'a> {
34+ fn render<'a, 'bump>(&'a self, cx: &mut RenderContext<'bump>) -> Node<'bump>
35− let who = bumpalo::format!(in cx.bump, "Hello, {}!", self.who);
35+ where
36− div(cx)
36+ 'a: 'bump,
37+ {
38+ span(cx.bump)
37− .children([text(who.into_bump_str())])
39+ .children([text("Hello, "), text(&self.who), text("!")])
38 .finish()
40 .finish()
39 }
41 }
40}
42}
@@ -57,15 +59,6 @@ directory](https://github.com/fitzgen/dodrio/tree/master/examples), including:
57* [`js-component`](https://github.com/fitzgen/dodrio/tree/master/examples/js-component):
59* [`js-component`](https://github.com/fitzgen/dodrio/tree/master/examples/js-component):
58 Defines a rendering component in JavaScript with the `dodrio-js-api` crate.
60 Defines a rendering component in JavaScript with the `dodrio-js-api` crate.
59
61
60−## Cargo Features
61−
62−* `log` &mdash; enable debugging-oriented log messages with the `log` crate's
63− facade. You still have to initialize a logger for the messages to go anywhere,
64− such as [`console_log`](https://github.com/iamcodemaker/console_log).
65−
66−* `serde` &mdash; enable `serde::{Serialize, Deserialize}` implementations for
67− `Cached<R>` where `R` is serializable and deserializable.
68−
69## Design
62## Design
70
63
71### Bump Allocation
64### Bump Allocation
benches/benches.rs+29−23
@@ -10,26 +10,24 @@ use criterion::{
10use dodrio::{
10use dodrio::{
11 builder::*,
11 builder::*,
12 bumpalo::{self, Bump},
12 bumpalo::{self, Bump},
13− CachedSet, Node, Render, RenderContext, Vdom,
13+ Node, Render, Vdom,
14};
14};
15−use std::cell::RefCell;
16−use std::convert::TryInto;
17
15
18/// The simplest thing we can render: `<div/>`.
16/// The simplest thing we can render: `<div/>`.
19struct Empty;
17struct Empty;
20−impl<'a> Render<'a> for Empty {
18+impl Render for Empty {
21− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
19+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
22− div(&cx).finish()
20+ div(cx.bump).finish()
23 }
21 }
24}
22}
25
23
26/// Render a list that is `self.0` items long, has attributes and listeners.
24/// Render a list that is `self.0` items long, has attributes and listeners.
27struct SimpleList(usize);
25struct SimpleList(usize);
28−impl<'a> Render<'a> for SimpleList {
26+impl Render for SimpleList {
29− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
27+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
30− let mut children = bumpalo::collections::Vec::with_capacity_in(self.0, cx.bump);
28+ let mut children = bumpalo::collections::Vec::with_capacity_in(self.0, bump);
31 children.extend((0..self.0).map(|_| {
29 children.extend((0..self.0).map(|_| {
32− li(&cx)
30+ li(bump)
33 .attr("class", "my-list-item")
31 .attr("class", "my-list-item")
34 .on("click", |_root, _vdom, _event| {
32 .on("click", |_root, _vdom, _event| {
35 panic!("no one should call this")
33 panic!("no one should call this")
@@ -37,7 +35,7 @@ impl<'a> Render<'a> for SimpleList {
37 .children([text("a list item")])
35 .children([text("a list item")])
38 .finish()
36 .finish()
39 }));
37 }));
40− ol(&cx).attr("id", "my-list").children(children).finish()
38+ ol(bump).attr("id", "my-list").children(children).finish()
41 }
39 }
42}
40}
43
41
@@ -46,13 +44,10 @@ fn criterion_benchmark(c: &mut Criterion) {
46 "render",
44 "render",
47 Benchmark::new("empty", {
45 Benchmark::new("empty", {
48 let mut bump = Bump::new();
46 let mut bump = Bump::new();
49− let cached_set = RefCell::new(CachedSet::default());
50− let mut templates = Default::default();
51 move |b| {
47 move |b| {
52 bump.reset();
48 bump.reset();
53− let mut cx = RenderContext::new(&bump, &cached_set, &mut templates);
54 b.iter(|| {
49 b.iter(|| {
55− black_box(Empty.render(&mut cx));
50+ black_box(Empty.render(&bump));
56 })
51 })
57 }
52 }
58 }),
53 }),
@@ -64,19 +59,23 @@ fn criterion_benchmark(c: &mut Criterion) {
64 "list",
59 "list",
65 {
60 {
66 let mut bump = Bump::new();
61 let mut bump = Bump::new();
67− let cached_set = RefCell::new(CachedSet::default());
68− let mut templates = Default::default();
69 move |b, n| {
62 move |b, n| {
70 bump.reset();
63 bump.reset();
71− let mut cx = RenderContext::new(&bump, &cached_set, &mut templates);
72 b.iter(|| {
64 b.iter(|| {
73− black_box(SimpleList(*n).render(&mut cx));
65+ black_box(SimpleList(*n).render(&bump));
74 })
66 })
75 }
67 }
76 },
68 },
69+ vec![
70+ // TODO: Only test one `n` value until
71+ // https://github.com/bheisler/criterion.rs/issues/269 is fixed.
72+ //
73+ // 100,
74+ // 1_000,
77− vec![100, 1_000, 10_000],
75+ 10_000,
76+ ],
78 )
77 )
79− .throughput(|n| Throughput::Elements((*n).try_into().unwrap())),
78+ .throughput(|n| Throughput::Elements(*n as u32)),
80 );
79 );
81
80
82 c.bench(
81 c.bench(
@@ -90,7 +89,14 @@ fn criterion_benchmark(c: &mut Criterion) {
90 black_box(&vdom);
89 black_box(&vdom);
91 })
90 })
92 },
91 },
92+ vec![
93+ // TODO: Only test one `n` value until
94+ // https://github.com/bheisler/criterion.rs/issues/269 is fixed.
95+ //
96+ // 100,
97+ // 1_000,
93− vec![100, 1_000, 10_000],
98+ 10_000,
99+ ],
94 )
100 )
95 .with_function("empty-to-full-list-to-empty", |b, &n| {
101 .with_function("empty-to-full-list-to-empty", |b, &n| {
96 b.iter(|| {
102 b.iter(|| {
@@ -110,7 +116,7 @@ fn criterion_benchmark(c: &mut Criterion) {
110 black_box(&vdom);
116 black_box(&vdom);
111 })
117 })
112 })
118 })
113− .throughput(|n| Throughput::Elements((*n).try_into().unwrap())),
119+ .throughput(|n| Throughput::Elements(*n as u32)),
114 );
120 );
115}
121}
116
122
build.sh+2−2
@@ -4,8 +4,8 @@ cd $(dirname $0)
4set -eux
4set -eux
5
5
6cargo fmt --all || true
6cargo fmt --all || true
7−cargo build --all --target wasm32-unknown-unknown
7+cargo check --all --target wasm32-unknown-unknown
8
8
9for x in ./examples/*; do
9for x in ./examples/*; do
10− wasm-pack build --target web "$x"
10+ wasm-pack build --target no-modules "$x"
11done
11done
crates/js-api/Cargo.toml+7−6
@@ -7,16 +7,17 @@ keywords = ["javascript", "js", "vdom", "virtual-dom"]
7license = "MPL-2.0"
7license = "MPL-2.0"
8name = "dodrio-js-api"
8name = "dodrio-js-api"
9repository = "https://github.com/fitzgen/dodrio"
9repository = "https://github.com/fitzgen/dodrio"
10−version = "0.2.0"
10+version = "0.1.0"
11
11
12[badges]
12[badges]
13travis-ci = { repository = "fitzgen/dodrio" }
13travis-ci = { repository = "fitzgen/dodrio" }
14
14
15[dependencies]
15[dependencies]
16−dodrio = { version = "=0.2.0", path = "../.." }
16+dodrio = { version = "=0.1.0", path = "../.." }
17−wasm-bindgen = "0.2.55"
17+wasm-bindgen = "0.2.39"
18−js-sys = "0.3.32"
18+js-sys = "0.3.16"
19−wasm-bindgen-futures = "0.4.5"
19+wasm-bindgen-futures = "0.3.16"
20+futures = "0.1.26"
20
21
21[dev-dependencies]
22[dev-dependencies]
22−wasm-bindgen-test = "0.3.5"
23+wasm-bindgen-test = "0.2.39"
crates/js-api/src/lib.rs+12−15
@@ -99,10 +99,10 @@ impl GreetingViaJs {
99
99
100/// And finally the `Render` implementation! This adds a `<p>` element and some
100/// And finally the `Render` implementation! This adds a `<p>` element and some
101/// text around whatever the inner JS `Greeting` component renders.
101/// text around whatever the inner JS `Greeting` component renders.
102−impl<'a> Render<'a> for GreetingViaJs {
102+impl Render for GreetingViaJs {
103− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
103+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
104 use dodrio::builder::*;
104 use dodrio::builder::*;
105− p(&cx)
105+ p(cx.bump)
106 .children([
106 .children([
107 text("JavaScript says: "),
107 text("JavaScript says: "),
108 self.js.render(cx),
108 self.js.render(cx),
@@ -116,6 +116,7 @@ impl<'a> Render<'a> for GreetingViaJs {
116#![deny(missing_docs, missing_debug_implementations)]
116#![deny(missing_docs, missing_debug_implementations)]
117
117
118use dodrio::{builder, bumpalo, Node, Render, RenderContext};
118use dodrio::{builder, bumpalo, Node, Render, RenderContext};
119+use futures::prelude::*;
119use js_sys::{Object, Promise, Reflect};
120use js_sys::{Object, Promise, Reflect};
120use wasm_bindgen::prelude::*;
121use wasm_bindgen::prelude::*;
121use wasm_bindgen::JsCast;
122use wasm_bindgen::JsCast;
@@ -184,16 +185,12 @@ impl VdomWeak {
184 /// Schedule re-rendering of the virtual DOM. A promise is returned that is
185 /// Schedule re-rendering of the virtual DOM. A promise is returned that is
185 /// resolved after the rendering has happened.
186 /// resolved after the rendering has happened.
186 pub fn render(&self) -> Promise {
187 pub fn render(&self) -> Promise {
187− let future = self.inner.render();
188−
189− wasm_bindgen_futures::future_to_promise(async move {
188+ wasm_bindgen_futures::future_to_promise(
190− if let Err(e) = future.await {
189+ self.inner.render().map(|_| JsValue::null()).map_err(|e| {
191 let msg = e.to_string();
190 let msg = e.to_string();
192− Err(js_sys::Error::new(&msg).into())
191+ js_sys::Error::new(&msg).into()
193− } else {
192+ }),
194− Ok(JsValue::null())
195− }
196− })
193+ )
197 }
194 }
198}
195}
199
196
@@ -216,8 +213,8 @@ impl JsRender {
216 }
213 }
217}
214}
218
215
219−impl<'a> Render<'a> for JsRender {
216+impl Render for JsRender {
220− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
217+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
221 create(cx, self.render())
218 create(cx, self.render())
222 }
219 }
223}
220}
@@ -226,7 +223,7 @@ fn has_property(obj: &Object, property: &str) -> bool {
226 Reflect::has(obj, &property.into()).unwrap_or_default()
223 Reflect::has(obj, &property.into()).unwrap_or_default()
227}
224}
228
225
229−fn create<'a>(cx: &mut RenderContext<'a>, val: JsValue) -> Node<'a> {
226+fn create<'bump>(cx: &mut RenderContext<'bump>, val: JsValue) -> Node<'bump> {
230 if let Some(txt) = val.as_string() {
227 if let Some(txt) = val.as_string() {
231 let text = bumpalo::collections::String::from_str_in(&txt, cx.bump);
228 let text = bumpalo::collections::String::from_str_in(&txt, cx.bump);
232 return builder::text(text.into_bump_str());
229 return builder::text(text.into_bump_str());
examples/counter/Cargo.toml+5−5
@@ -11,13 +11,13 @@ crate-type = ["cdylib"]
11
11
12[dependencies]
12[dependencies]
13console_error_panic_hook = "0.1.6"
13console_error_panic_hook = "0.1.6"
14−console_log = "0.2.0"
14+console_log = "0.1.2"
15dodrio = { path = "../.." }
15dodrio = { path = "../.." }
16−log = "0.4.11"
16+log = "0.4.6"
17−wasm-bindgen = "0.2.55"
17+wasm-bindgen = "0.2.39"
18
18
19[dependencies.web-sys]
19[dependencies.web-sys]
20−version = "0.3.32"
20+version = "0.3.16"
21features = [
21features = [
22 "console",
22 "console",
23 "Document",
23 "Document",
@@ -30,4 +30,4 @@ features = [
30]
30]
31
31
32[dev-dependencies]
32[dev-dependencies]
33−wasm-bindgen-test = "0.3.5"
33+wasm-bindgen-test = "0.2.39"
examples/counter/README.md+1−1
@@ -9,7 +9,7 @@ See `src/lib.rs`.
9## Build
9## Build
10
10
11```
11```
12−wasm-pack build --target web
12+wasm-pack build --target no-modules
13```
13```
14
14
15## Serve
15## Serve
examples/counter/index.html+3−3
@@ -5,9 +5,9 @@
5 <title>Counter</title>
5 <title>Counter</title>
6 </head>
6 </head>
7 <body>
7 <body>
8− <script type="module">
9− import init from "./pkg/dodrio_counter.js";
8+ <script src="pkg/dodrio_counter.js"></script>
9+ <script>
10− init("./pkg/dodrio_counter_bg.wasm");
10+ wasm_bindgen("pkg/dodrio_counter_bg.wasm");
11 </script>
11 </script>
12 </body>
12 </body>
13</html>
13</html>
examples/counter/src/lib.rsmode 100755 → 100644+7−8
@@ -1,4 +1,4 @@
1−use dodrio::{bumpalo, Node, Render, RenderContext};
1+use dodrio::{bumpalo, Render, RenderContext};
2use log::*;
2use log::*;
3use wasm_bindgen::prelude::*;
3use wasm_bindgen::prelude::*;
4
4
@@ -26,16 +26,16 @@ impl Counter {
26
26
27// The `Render` implementation for `Counter`s displays the current count and has
27// The `Render` implementation for `Counter`s displays the current count and has
28// buttons to increment and decrement the count.
28// buttons to increment and decrement the count.
29−impl<'a> Render<'a> for Counter {
29+impl Render for Counter {
30− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
30+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> dodrio::Node<'bump> {
31 use dodrio::builder::*;
31 use dodrio::builder::*;
32
32
33 // Stringify the count as a bump-allocated string.
33 // Stringify the count as a bump-allocated string.
34 let count = bumpalo::format!(in cx.bump, "{}", self.count);
34 let count = bumpalo::format!(in cx.bump, "{}", self.count);
35
35
36− div(&cx)
36+ div(cx.bump)
37 .children([
37 .children([
38− button(&cx)
38+ button(cx.bump)
39 .on("click", |root, vdom, _event| {
39 .on("click", |root, vdom, _event| {
40 // Cast the root render component to a `Counter`, since
40 // Cast the root render component to a `Counter`, since
41 // we know that's what it is.
41 // we know that's what it is.
@@ -51,11 +51,10 @@ impl<'a> Render<'a> for Counter {
51 .children([text("+")])
51 .children([text("+")])
52 .finish(),
52 .finish(),
53 text(count.into_bump_str()),
53 text(count.into_bump_str()),
54− button(&cx)
54+ button(cx.bump)
55 .on("click", |root, vdom, _event| {
55 .on("click", |root, vdom, _event| {
56 // Same as above, but decrementing instead of incrementing.
56 // Same as above, but decrementing instead of incrementing.
57− let counter = root.unwrap_mut::<Counter>();
57+ root.unwrap_mut::<Counter>().decrement();
58− counter.decrement();
59 vdom.schedule_render();
58 vdom.schedule_render();
60 })
59 })
61 .children([text("-")])
60 .children([text("-")])
examples/game-of-life/Cargo.toml+6−5
@@ -11,13 +11,14 @@ crate-type = ["cdylib"]
11
11
12[dependencies]
12[dependencies]
13dodrio = { path = "../.." }
13dodrio = { path = "../.." }
14−wasm-bindgen = "0.2.55"
14+wasm-bindgen = "0.2.39"
15console_error_panic_hook = "0.1.6"
15console_error_panic_hook = "0.1.6"
16−js-sys = "0.3.32"
16+js-sys = "0.3.16"
17−wasm-bindgen-futures = "0.4.5"
17+wasm-bindgen-futures = "0.3.16"
18+futures = "0.1.26"
18
19
19[dependencies.web-sys]
20[dependencies.web-sys]
20−version = "0.3.32"
21+version = "0.3.16"
21features = [
22features = [
22 "Document",
23 "Document",
23 "HtmlElement",
24 "HtmlElement",
@@ -26,4 +27,4 @@ features = [
26]
27]
27
28
28[dev-dependencies]
29[dev-dependencies]
29−wasm-bindgen-test = "0.3.5"
30+wasm-bindgen-test = "0.2.39"
examples/game-of-life/README.md+1−1
@@ -11,7 +11,7 @@ See `src/lib.rs`.
11## Build
11## Build
12
12
13```
13```
14−wasm-pack build --target web
14+wasm-pack build --target no-modules
15```
15```
16
16
17## Serve
17## Serve
examples/game-of-life/index.htmlmode 100755 → 100644+6−3
@@ -19,6 +19,9 @@
19 padding: 0;
19 padding: 0;
20 }
20 }
21
21
22+ .universe {
23+ }
24+
22 body {
25 body {
23 width: 100vw;
26 width: 100vw;
24 height: 100vh;
27 height: 100vh;
@@ -36,9 +39,9 @@
36 </style>
39 </style>
37 </head>
40 </head>
38 <body>
41 <body>
39− <script type="module">
40− import init from "./pkg/dodrio_game_of_life.js";
42+ <script src="pkg/dodrio_game_of_life.js"></script>
43+ <script>
41− init("./pkg/dodrio_game_of_life_bg.wasm");
44+ wasm_bindgen("pkg/dodrio_game_of_life_bg.wasm");
42 </script>
45 </script>
43 </body>
46 </body>
44</html>
47</html>
examples/game-of-life/src/lib.rs+19−21
@@ -1,4 +1,5 @@
1use dodrio::{bumpalo, Node, Render, RenderContext, Vdom};
1use dodrio::{bumpalo, Node, Render, RenderContext, Vdom};
2+use futures::prelude::*;
2use std::cell::RefCell;
3use std::cell::RefCell;
3use std::rc::Rc;
4use std::rc::Rc;
4use wasm_bindgen::{prelude::*, JsCast};
5use wasm_bindgen::{prelude::*, JsCast};
@@ -126,8 +127,8 @@ impl Universe {
126}
127}
127
128
128/// The rendering implementation for our Game of Life.
129/// The rendering implementation for our Game of Life.
129−impl<'a> Render<'a> for Universe {
130+impl Render for Universe {
130− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
131+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
131 use dodrio::builder::*;
132 use dodrio::builder::*;
132
133
133 let mut rows = bumpalo::collections::Vec::with_capacity_in(self.height as usize, cx.bump);
134 let mut rows = bumpalo::collections::Vec::with_capacity_in(self.height as usize, cx.bump);
@@ -138,7 +139,7 @@ impl<'a> Render<'a> for Universe {
138
139
139 for cell in row {
140 for cell in row {
140 cells.push(
141 cells.push(
141− span(&cx)
142+ span(cx.bump)
142 .attr("class", "cell")
143 .attr("class", "cell")
143 .attr(
144 .attr(
144 "style",
145 "style",
@@ -151,10 +152,13 @@ impl<'a> Render<'a> for Universe {
151 );
152 );
152 }
153 }
153
154
154− rows.push(div(&cx).attr("class", "row").children(cells).finish());
155+ rows.push(div(cx.bump).attr("class", "row").children(cells).finish());
155 }
156 }
156
157
158+ div(cx.bump)
157− div(&cx).attr("class", "universe").children(rows).finish()
159+ .attr("class", "universe")
160+ .children(rows)
161+ .finish()
158 }
162 }
159}
163}
160
164
@@ -171,32 +175,26 @@ pub fn run() {
171 // Create a new Game of Life `Universe` render component.
175 // Create a new Game of Life `Universe` render component.
172 let universe = Universe::new();
176 let universe = Universe::new();
173
177
174− // Create a virtual DOM and mount it and the `Universe` render component to the
178+ // Create a virtual DOM and mount it and the `Hello` render component to the
175 // `<body>`.
179 // `<body>`.
176 let vdom = Vdom::new(body.as_ref(), universe);
180 let vdom = Vdom::new(body.as_ref(), universe);
177
181
178 // Kick off a loop that keeps computing a tick of the universe and then
182 // Kick off a loop that keeps computing a tick of the universe and then
179 // re-rendering on every animation frame.
183 // re-rendering on every animation frame.
180− let rc = <Rc<RefCell<Option<Closure<dyn FnMut()>>>>>::default();
184+ let rc: Rc<RefCell<Option<Closure<FnMut()>>>> = Rc::new(RefCell::new(None));
181 let rc2 = rc.clone();
185 let rc2 = rc.clone();
182 let window2 = window.clone();
186 let window2 = window.clone();
183 let weak = vdom.weak();
187 let weak = vdom.weak();
184 let f = Closure::wrap(Box::new(move || {
188 let f = Closure::wrap(Box::new(move || {
185 weak.schedule_render();
189 weak.schedule_render();
186
190
187− wasm_bindgen_futures::spawn_local({
191+ wasm_bindgen_futures::spawn_local(
188− let weak = weak.clone();
189− async move {
190− let fut = weak.with_component(|root| {
192+ weak.with_component(|root| {
191− let universe = root.unwrap_mut::<Universe>();
193+ let universe = root.unwrap_mut::<Universe>();
192− universe.tick();
194+ universe.tick();
193− });
195+ })
194−
195− if fut.await.is_err() {
196− wasm_bindgen::throw_str("impossible, we always keep the vdom alive");
196+ .map_err(|_| wasm_bindgen::throw_str("impossible, we always keep the vdom alive")),
197− }
198− }
199− });
197+ );
200
198
201 window
199 window
202 .request_animation_frame(
200 .request_animation_frame(
@@ -207,7 +205,7 @@ pub fn run() {
207 .unchecked_ref::<js_sys::Function>(),
205 .unchecked_ref::<js_sys::Function>(),
208 )
206 )
209 .unwrap_throw();
207 .unwrap_throw();
210− }) as Box<dyn FnMut()>);
208+ }) as Box<FnMut()>);
211 window2
209 window2
212 .request_animation_frame(f.as_ref().unchecked_ref::<js_sys::Function>())
210 .request_animation_frame(f.as_ref().unchecked_ref::<js_sys::Function>())
213 .unwrap_throw();
211 .unwrap_throw();
examples/hello-world/Cargo.toml+3−3
@@ -11,11 +11,11 @@ crate-type = ["cdylib"]
11
11
12[dependencies]
12[dependencies]
13dodrio = { path = "../.." }
13dodrio = { path = "../.." }
14−wasm-bindgen = "0.2.55"
14+wasm-bindgen = "0.2.39"
15console_error_panic_hook = "0.1.6"
15console_error_panic_hook = "0.1.6"
16
16
17[dependencies.web-sys]
17[dependencies.web-sys]
18−version = "0.3.32"
18+version = "0.3.16"
19features = [
19features = [
20 "Document",
20 "Document",
21 "HtmlElement",
21 "HtmlElement",
@@ -24,4 +24,4 @@ features = [
24]
24]
25
25
26[dev-dependencies]
26[dev-dependencies]
27−wasm-bindgen-test = "0.3.5"
27+wasm-bindgen-test = "0.2.39"
examples/hello-world/README.md+1−1
@@ -9,7 +9,7 @@ See `src/lib.rs`.
9## Build
9## Build
10
10
11```
11```
12−wasm-pack build --target web
12+wasm-pack build --target no-modules
13```
13```
14
14
15## Serve
15## Serve
examples/hello-world/index.html+3−3
@@ -5,9 +5,9 @@
5 <title>Hello, World!</title>
5 <title>Hello, World!</title>
6 </head>
6 </head>
7 <body>
7 <body>
8− <script type="module">
9− import init from "./pkg/dodrio_hello_world.js";
8+ <script src="pkg/dodrio_hello_world.js"></script>
9+ <script>
10− init("./pkg/dodrio_hello_world_bg.wasm");
10+ wasm_bindgen("pkg/dodrio_hello_world_bg.wasm");
11 </script>
11 </script>
12 </body>
12 </body>
13</html>
13</html>
examples/hello-world/src/lib.rs+3−3
@@ -10,11 +10,11 @@ struct Hello {
10
10
11// The `Render` implementation describes how to render a `Hello` component into
11// The `Render` implementation describes how to render a `Hello` component into
12// HTML.
12// HTML.
13−impl<'a> Render<'a> for Hello {
13+impl Render for Hello {
14− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
14+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
15 let msg = bumpalo::format!(in cx.bump, "Hello, {}!", self.who);
15 let msg = bumpalo::format!(in cx.bump, "Hello, {}!", self.who);
16 let msg = msg.into_bump_str();
16 let msg = msg.into_bump_str();
17− p(&cx).children([text(msg)]).finish()
17+ p(cx.bump).children([text(msg)]).finish()
18 }
18 }
19}
19}
20
20
examples/input-form/Cargo.toml+3−3
@@ -11,11 +11,11 @@ crate-type = ["cdylib"]
11
11
12[dependencies]
12[dependencies]
13dodrio = { path = "../.." }
13dodrio = { path = "../.." }
14−wasm-bindgen = "0.2.55"
14+wasm-bindgen = "0.2.39"
15console_error_panic_hook = "0.1.6"
15console_error_panic_hook = "0.1.6"
16
16
17[dependencies.web-sys]
17[dependencies.web-sys]
18−version = "0.3.32"
18+version = "0.3.16"
19features = [
19features = [
20 "console",
20 "console",
21 "Document",
21 "Document",
@@ -29,4 +29,4 @@ features = [
29]
29]
30
30
31[dev-dependencies]
31[dev-dependencies]
32−wasm-bindgen-test = "0.3.5"
32+wasm-bindgen-test = "0.2.39"
examples/input-form/README.md+1−1
@@ -10,7 +10,7 @@ See `src/lib.rs`.
10## Build
10## Build
11
11
12```
12```
13−wasm-pack build --target web
13+wasm-pack build --target no-modules
14```
14```
15
15
16## Serve
16## Serve
examples/input-form/index.html+3−3
@@ -5,9 +5,9 @@
5 <title>Input Form</title>
5 <title>Input Form</title>
6 </head>
6 </head>
7 <body>
7 <body>
8− <script type="module">
9− import init from "./pkg/dodrio_input_form.js";
8+ <script src="pkg/dodrio_input_form.js"></script>
9+ <script>
10− init("./pkg/dodrio_input_form_bg.wasm");
10+ wasm_bindgen("pkg/dodrio_input_form_bg.wasm");
11 </script>
11 </script>
12 </body>
12 </body>
13</html>
13</html>
examples/input-form/src/lib.rs+4−4
@@ -23,13 +23,13 @@ impl SayHelloTo {
23
23
24// The `Render` implementation has a text `<input>` and a `<div>` that shows a
24// The `Render` implementation has a text `<input>` and a `<div>` that shows a
25// greeting to the `<input>`'s value.
25// greeting to the `<input>`'s value.
26−impl<'a> Render<'a> for SayHelloTo {
26+impl Render for SayHelloTo {
27− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
27+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
28 use dodrio::builder::*;
28 use dodrio::builder::*;
29
29
30− div(&cx)
30+ div(cx.bump)
31 .children([
31 .children([
32− input(&cx)
32+ input(cx.bump)
33 .attr("type", "text")
33 .attr("type", "text")
34 .attr(
34 .attr(
35 "value",
35 "value",
examples/js-component/Cargo.toml+3−3
@@ -12,12 +12,12 @@ crate-type = ["cdylib"]
12[dependencies]
12[dependencies]
13dodrio = { path = "../.." }
13dodrio = { path = "../.." }
14dodrio-js-api = { path = "../../crates/js-api" }
14dodrio-js-api = { path = "../../crates/js-api" }
15−wasm-bindgen = "0.2.55"
15+wasm-bindgen = "0.2.39"
16console_error_panic_hook = "0.1.6"
16console_error_panic_hook = "0.1.6"
17−js-sys = "0.3.32"
17+js-sys = "0.3.16"
18
18
19[dependencies.web-sys]
19[dependencies.web-sys]
20−version = "0.3.32"
20+version = "0.3.16"
21features = [
21features = [
22 "Document",
22 "Document",
23 "HtmlElement",
23 "HtmlElement",
examples/js-component/README.md+1−1
@@ -11,7 +11,7 @@ See `src/lib.rs` for the Rust code.
11## Build
11## Build
12
12
13```
13```
14−wasm-pack build --target web
14+wasm-pack build --target no-modules
15```
15```
16
16
17## Serve
17## Serve
examples/js-component/index.html+3−3
@@ -6,9 +6,9 @@
6 </head>
6 </head>
7 <body>
7 <body>
8 <script src="greeting.js"></script>
8 <script src="greeting.js"></script>
9− <script type="module">
10− import init from "./pkg/dodrio_js_component.js";
9+ <script src="pkg/dodrio_js_component.js"></script>
10+ <script>
11− init("./pkg/dodrio_js_component_bg.wasm");
11+ wasm_bindgen("pkg/dodrio_js_component_bg.wasm");
12 </script>
12 </script>
13 </body>
13 </body>
14</html>
14</html>
examples/js-component/src/lib.rs+4−4
@@ -31,10 +31,10 @@ impl GreetingViaJs {
31
31
32/// Here's the `Render` implementation! This adds a `<p>` element and some text
32/// Here's the `Render` implementation! This adds a `<p>` element and some text
33/// around whatever the inner JS `Greeting` component renders.
33/// around whatever the inner JS `Greeting` component renders.
34−impl<'a> Render<'a> for GreetingViaJs {
34+impl Render for GreetingViaJs {
35− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
35+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
36 use dodrio::builder::*;
36 use dodrio::builder::*;
37− p(&cx)
37+ p(cx.bump)
38 .children([text("JavaScript says: "), self.js.render(cx)])
38 .children([text("JavaScript says: "), self.js.render(cx)])
39 .finish()
39 .finish()
40 }
40 }
@@ -54,7 +54,7 @@ pub fn run() {
54 // Create a new `GreetingViaJs` render component.
54 // Create a new `GreetingViaJs` render component.
55 let component = GreetingViaJs::new("World");
55 let component = GreetingViaJs::new("World");
56
56
57− // Create a virtual DOM and mount it and the `GreetingViaJs` render component to the
57+ // Create a virtual DOM and mount it and the `Hello` render component to the
58 // `<body>`.
58 // `<body>`.
59 let vdom = Vdom::new(body.as_ref(), component);
59 let vdom = Vdom::new(body.as_ref(), component);
60
60
examples/moire/Cargo.toml+9−8
@@ -8,19 +8,20 @@ edition = "2018"
8crate-type = ["cdylib"]
8crate-type = ["cdylib"]
9
9
10[dependencies]
10[dependencies]
11−cfg-if = "0.1.10"
11+cfg-if = "0.1.7"
12dodrio = { path = "../.." }
12dodrio = { path = "../.." }
13+futures = "0.1.26"
13−log = "0.4.11"
14+log = "0.4.6"
14−wasm-bindgen = "0.2.55"
15+wasm-bindgen = "0.2.39"
15−wasm-bindgen-futures = "0.4.5"
16+wasm-bindgen-futures = "0.3.16"
16
17
17# Optional dependencies for logging.
18# Optional dependencies for logging.
18console_error_panic_hook = { optional = true, version = "0.1.6" }
19console_error_panic_hook = { optional = true, version = "0.1.6" }
19−console_log = { optional = true, version = "0.2.0" }
20+console_log = { optional = true, version = "0.1.2" }
20−js-sys = "0.3.32"
21+js-sys = "0.3.16"
21
22
22[dependencies.web-sys]
23[dependencies.web-sys]
23−version = "0.3.32"
24+version = "0.3.16"
24features = [
25features = [
25 "Document",
26 "Document",
26 "Element",
27 "Element",
@@ -34,7 +35,7 @@ features = [
34]
35]
35
36
36[dev-dependencies]
37[dev-dependencies]
37−wasm-bindgen-test = "0.3.5"
38+wasm-bindgen-test = "0.2.39"
38
39
39[features]
40[features]
40logging = [
41logging = [
examples/moire/README.md+1−1
@@ -14,7 +14,7 @@ conversion and other color utilities.
14## Build
14## Build
15
15
16```
16```
17−wasm-pack build --target web
17+wasm-pack build --target no-modules
18```
18```
19
19
20## Serve
20## Serve
examples/moire/index.html+3−3
@@ -42,9 +42,9 @@
42 <body>
42 <body>
43 <code>FPS: <output id="fps"></code></code>
43 <code>FPS: <output id="fps"></code></code>
44 <div id="scene"></div>
44 <div id="scene"></div>
45− <script type="module">
46− import init from "./pkg/dodrio_moire.js";
45+ <script src="pkg/dodrio_moire.js"></script>
46+ <script>
47− init("./pkg/dodrio_moire_bg.wasm");
47+ wasm_bindgen("pkg/dodrio_moire_bg.wasm");
48 </script>
48 </script>
49 <script>
49 <script>
50 let lastTime = 0
50 let lastTime = 0
examples/moire/src/lib.rs+32−22
@@ -5,7 +5,8 @@ use dodrio::{bumpalo, Node, Render, RenderContext, Vdom};
5use std::cell::RefCell;
5use std::cell::RefCell;
6use std::rc::Rc;
6use std::rc::Rc;
7use std::str;
7use std::str;
8−use wasm_bindgen::{prelude::*, JsCast};
8+use wasm_bindgen::prelude::*;
9+use wasm_bindgen::JsCast;
9
10
10/// This is the main function that is automatically invoked when the wasm module
11/// This is the main function that is automatically invoked when the wasm module
11/// is loaded.
12/// is loaded.
@@ -22,12 +23,12 @@ pub fn run() {
22 // Create a new `Moire` render component.
23 // Create a new `Moire` render component.
23 let component = Moire::new();
24 let component = Moire::new();
24
25
25− // Create a virtual DOM and mount it and the `Moire` render component to the
26+ // Create a virtual DOM and mount it and the `Hello` render component to the
26 // scene.
27 // scene.
27 let vdom = Vdom::new(&scene, component);
28 let vdom = Vdom::new(&scene, component);
28
29
29 // Kick off a loop that keeps re-rendering on every animation frame.
30 // Kick off a loop that keeps re-rendering on every animation frame.
30− let rc = <Rc<RefCell<Option<Closure<dyn FnMut()>>>>>::default();
31+ let rc: Rc<RefCell<Option<Closure<FnMut()>>>> = Rc::new(RefCell::new(None));
31 let rc2 = rc.clone();
32 let rc2 = rc.clone();
32 let window2 = window.clone();
33 let window2 = window.clone();
33 let weak = vdom.weak();
34 let weak = vdom.weak();
@@ -42,7 +43,7 @@ pub fn run() {
42 .unchecked_ref::<js_sys::Function>(),
43 .unchecked_ref::<js_sys::Function>(),
43 )
44 )
44 .unwrap_throw();
45 .unwrap_throw();
45− }) as Box<dyn FnMut()>);
46+ }) as Box<FnMut()>);
46 window2
47 window2
47 .request_animation_frame(f.as_ref().unchecked_ref::<js_sys::Function>())
48 .request_animation_frame(f.as_ref().unchecked_ref::<js_sys::Function>())
48 .unwrap_throw();
49 .unwrap_throw();
@@ -104,8 +105,8 @@ impl Moire {
104 }
105 }
105}
106}
106
107
107−impl<'a> Render<'a> for Moire {
108+impl Render for Moire {
108− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
109+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
109 use dodrio::builder::*;
110 use dodrio::builder::*;
110
111
111 let elapsed = web_sys::window()
112 let elapsed = web_sys::window()
@@ -115,12 +116,12 @@ impl<'a> Render<'a> for Moire {
115 .now();
116 .now();
116 let elapsed = elapsed / 1600.0;
117 let elapsed = elapsed / 1600.0;
117
118
118− main(&cx)
119+ main(cx.bump)
119 .attr("style", self.moire_style(cx, elapsed))
120 .attr("style", self.moire_style(cx, elapsed))
120 .children([
121 .children([
121 // The `<input>` that lets users control how many circles to
122 // The `<input>` that lets users control how many circles to
122 // render.
123 // render.
123− input(&cx)
124+ input(cx.bump)
124 .attr("id", "circle-count")
125 .attr("id", "circle-count")
125 .attr("type", "range")
126 .attr("type", "range")
126 .attr("min", "30")
127 .attr("min", "30")
@@ -149,7 +150,7 @@ impl<'a> Render<'a> for Moire {
149/// Rendering helper methods.
150/// Rendering helper methods.
150impl Moire {
151impl Moire {
151 /// Generate the main Moire element's inline CSS styles.
152 /// Generate the main Moire element's inline CSS styles.
152− fn moire_style<'a>(&self, cx: &mut RenderContext<'a>, elapsed: f64) -> &'a str {
153+ fn moire_style<'bump>(&self, cx: &mut RenderContext<'bump>, elapsed: f64) -> &'bump str {
153 let elapsed = elapsed / 3.0;
154 let elapsed = elapsed / 3.0;
154 let color = colors::get_interpolated_color(|(_, bg)| bg, elapsed % 1.0);
155 let color = colors::get_interpolated_color(|(_, bg)| bg, elapsed % 1.0);
155 let style = bumpalo::format!(
156 let style = bumpalo::format!(
@@ -163,7 +164,7 @@ impl Moire {
163 }
164 }
164
165
165 /// Generate the orbiting circle objects.
166 /// Generate the orbiting circle objects.
166− fn orbiting_objects<'a>(&self, cx: &mut RenderContext<'a>, elapsed: f64) -> Node<'a> {
167+ fn orbiting_objects<'bump>(&self, cx: &mut RenderContext<'bump>, elapsed: f64) -> Node<'bump> {
167 const D: f64 = 200.0;
168 const D: f64 = 200.0;
168 let x = elapsed.sin() * D;
169 let x = elapsed.sin() * D;
169 let y = elapsed.cos() * D;
170 let y = elapsed.cos() * D;
@@ -172,22 +173,26 @@ impl Moire {
172
173
173 /// Generate the lemniscate circle objects that interact with the orbiting
174 /// Generate the lemniscate circle objects that interact with the orbiting
174 /// circle objects to form Moire patterns.
175 /// circle objects to form Moire patterns.
175− fn lemniscate_objects<'a>(&self, cx: &mut RenderContext<'a>, elapsed: f64) -> Node<'a> {
176+ fn lemniscate_objects<'bump>(
177+ &self,
178+ cx: &mut RenderContext<'bump>,
179+ elapsed: f64,
180+ ) -> Node<'bump> {
176 const A: f64 = 150.0;
181 const A: f64 = 150.0;
177 let x = elapsed.sin() * A;
182 let x = elapsed.sin() * A;
178 let y = elapsed.sin() * elapsed.cos() * A;
183 let y = elapsed.sin() * elapsed.cos() * A;
179 self.moving_object(cx, elapsed, x, y)
184 self.moving_object(cx, elapsed, x, y)
180 }
185 }
181
186
182− fn moving_object<'a>(
187+ fn moving_object<'a, 'bump>(
183− &self,
188+ &'a self,
184− cx: &mut RenderContext<'a>,
189+ cx: &mut RenderContext<'bump>,
185 elapsed: f64,
190 elapsed: f64,
186 x: f64,
191 x: f64,
187 y: f64,
192 y: f64,
188− ) -> Node<'a> {
193+ ) -> Node<'bump> {
189 use dodrio::builder::*;
194 use dodrio::builder::*;
190− div(&cx)
195+ div(cx.bump)
191 .attr("class", "object")
196 .attr("class", "object")
192 .attr("style", self.moving_object_style(cx, x, y))
197 .attr("style", self.moving_object_style(cx, x, y))
193 .children([self.circle(cx, elapsed, self.count)])
198 .children([self.circle(cx, elapsed, self.count)])
@@ -195,17 +200,22 @@ impl Moire {
195 }
200 }
196
201
197 /// Generate inline CSS styles for a moving object.
202 /// Generate inline CSS styles for a moving object.
198− fn moving_object_style<'a>(&self, cx: &mut RenderContext<'a>, x: f64, y: f64) -> &'a str {
203+ fn moving_object_style<'bump>(
204+ &self,
205+ cx: &mut RenderContext<'bump>,
206+ x: f64,
207+ y: f64,
208+ ) -> &'bump str {
199 bumpalo::format!(in cx.bump, "left: {}px; top: {}px;", x, y).into_bump_str()
209 bumpalo::format!(in cx.bump, "left: {}px; top: {}px;", x, y).into_bump_str()
200 }
210 }
201
211
202 /// Recursively generate `self.count` concentric circles.
212 /// Recursively generate `self.count` concentric circles.
203− fn circle<'a>(&self, cx: &mut RenderContext<'a>, elapsed: f64, n: u32) -> Node<'a> {
213+ fn circle<'bump>(&self, cx: &mut RenderContext<'bump>, elapsed: f64, n: u32) -> Node<'bump> {
204 use dodrio::builder::*;
214 use dodrio::builder::*;
205
215
206 let r = n * 16;
216 let r = n * 16;
207
217
208− let mut circle = div(&cx)
218+ let mut circle = div(cx.bump)
209 .attr("class", "circle")
219 .attr("class", "circle")
210 .attr("data-radius", {
220 .attr("data-radius", {
211 let r = bumpalo::format!(in cx.bump, "{}", r);
221 let r = bumpalo::format!(in cx.bump, "{}", r);
@@ -221,13 +231,13 @@ impl Moire {
221 }
231 }
222
232
223 /// Generate inline CSS styles for a circle.
233 /// Generate inline CSS styles for a circle.
224− fn circle_style<'a>(
234+ fn circle_style<'bump>(
225 &self,
235 &self,
226− cx: &mut RenderContext<'a>,
236+ cx: &mut RenderContext<'bump>,
227 elapsed: f64,
237 elapsed: f64,
228 n: u32,
238 n: u32,
229 r: u32,
239 r: u32,
230− ) -> &'a str {
240+ ) -> &'bump str {
231 let (border, alpha) = self.circle_color(elapsed, n);
241 let (border, alpha) = self.circle_color(elapsed, n);
232 let margin = r / 2 + 3;
242 let margin = r / 2 + 3;
233 let style = bumpalo::format!(
243 let style = bumpalo::format!(
examples/sierpinski-triangle/Cargo.toml+6−5
@@ -9,13 +9,14 @@ crate-type = ["cdylib"]
9
9
10[dependencies]
10[dependencies]
11dodrio = { path = "../.." }
11dodrio = { path = "../.." }
12−wasm-bindgen = "0.2.55"
12+wasm-bindgen = "0.2.39"
13console_error_panic_hook = "0.1.6"
13console_error_panic_hook = "0.1.6"
14−js-sys = "0.3.32"
14+js-sys = "0.3.16"
15−wasm-bindgen-futures = "0.4.5"
15+wasm-bindgen-futures = "0.3.16"
16+futures = "0.1.26"
16
17
17[dependencies.web-sys]
18[dependencies.web-sys]
18−version = "0.3.32"
19+version = "0.3.16"
19features = [
20features = [
20 "Document",
21 "Document",
21 "HtmlElement",
22 "HtmlElement",
@@ -25,4 +26,4 @@ features = [
25]
26]
26
27
27[dev-dependencies]
28[dev-dependencies]
28−wasm-bindgen-test = "0.3.5"
29+wasm-bindgen-test = "0.2.39"
examples/sierpinski-triangle/README.mdmode 100755 → 100644+2−2
@@ -12,7 +12,7 @@ See `src/lib.rs`.
12## Build
12## Build
13
13
14```
14```
15−wasm-pack build --target web
15+wasm-pack build --target no-modules
16```
16```
17
17
18## Serve
18## Serve
@@ -20,5 +20,5 @@ wasm-pack build --target web
20Use any HTTP server, for example:
20Use any HTTP server, for example:
21
21
22```
22```
23−python -m SimpleHTTPServer
23+python -m http.server
24```
24```
examples/sierpinski-triangle/index.html+4−4
@@ -39,9 +39,9 @@
39 <code>FPS: <output id="fps">...</output></code>
39 <code>FPS: <output id="fps">...</output></code>
40 <div id="scene"></div>
40 <div id="scene"></div>
41
41
42− <script type="module">
43− import init from "./pkg/dodrio_sierpinski.js";
42+ <script src="pkg/dodrio_sierpinski.js"></script>
43+ <script>
44− init("./pkg/dodrio_sierpinski_bg.wasm");
44+ wasm_bindgen("pkg/dodrio_sierpinski_bg.wasm");
45 </script>
45 </script>
46
46
47 <script>
47 <script>
@@ -66,4 +66,4 @@
66 </script>
66 </script>
67</body>
67</body>
68
68
69−</html>
69+</html>
examples/sierpinski-triangle/src/lib.rs+24−13
@@ -1,7 +1,8 @@
1use dodrio::{bumpalo, Node, Render, RenderContext, Vdom};
1use dodrio::{bumpalo, Node, Render, RenderContext, Vdom};
2use std::cell::RefCell;
2use std::cell::RefCell;
3use std::rc::Rc;
3use std::rc::Rc;
4−use wasm_bindgen::{prelude::*, JsCast};
4+use wasm_bindgen::prelude::*;
5+use wasm_bindgen::JsCast;
5use web_sys::Window;
6use web_sys::Window;
6
7
7// Triangle container defining target size.
8// Triangle container defining target size.
@@ -16,7 +17,11 @@ impl Container {
16 }
17 }
17
18
18 // Generate the container style to fluctuate triangle width.
19 // Generate the container style to fluctuate triangle width.
19− fn container_transform<'a>(&self, cx: &mut RenderContext<'a>, elapsed: f64) -> &'a str {
20+ fn container_transform<'bump>(
21+ &self,
22+ cx: &mut RenderContext<'bump>,
23+ elapsed: f64,
24+ ) -> &'bump str {
20 let t = elapsed % 10.0;
25 let t = elapsed % 10.0;
21 let scale = 0.45 + (if t > 5.0 { 10.0 - t } else { t }) / 40.0;
26 let scale = 0.45 + (if t > 5.0 { 10.0 - t } else { t }) / 40.0;
22 let transform = bumpalo::format!(
27 let transform = bumpalo::format!(
@@ -28,7 +33,7 @@ impl Container {
28 }
33 }
29
34
30 // Generate the dot's position on the grid.
35 // Generate the dot's position on the grid.
31− fn dot_style<'a>(&self, cx: &mut RenderContext<'a>, x: f64, y: f64) -> &'a str {
36+ fn dot_style<'bump>(&self, cx: &mut RenderContext<'bump>, x: f64, y: f64) -> &'bump str {
32 let s = self.size * 1.3;
37 let s = self.size * 1.3;
33 let radius = s / 2.0;
38 let radius = s / 2.0;
34 let styles = bumpalo::format!(
39 let styles = bumpalo::format!(
@@ -47,10 +52,16 @@ impl Container {
47 }
52 }
48
53
49 // Create a dot node.
54 // Create a dot node.
55+ fn dot<'bump>(
56+ &self,
50− fn dot<'a>(&self, cx: &mut RenderContext<'a>, x: f64, y: f64, content: u32) -> Node<'a> {
57+ cx: &mut RenderContext<'bump>,
58+ x: f64,
59+ y: f64,
60+ content: u32,
61+ ) -> Node<'bump> {
51 use dodrio::builder::{div, text};
62 use dodrio::builder::{div, text};
52
63
53− div(&cx)
64+ div(cx.bump)
54 .attr("class", "dot")
65 .attr("class", "dot")
55 .attr("style", self.dot_style(cx, x, y))
66 .attr("style", self.dot_style(cx, x, y))
56 .child(text(
67 .child(text(
@@ -60,14 +71,14 @@ impl Container {
60 }
71 }
61
72
62 // Create a flattened vector of dot nodes (arranged in recursive triangles)
73 // Create a flattened vector of dot nodes (arranged in recursive triangles)
63− fn triangle<'a>(
74+ fn triangle<'bump>(
64 &self,
75 &self,
65− cx: &mut RenderContext<'a>,
76+ cx: &mut RenderContext<'bump>,
66 x: f64,
77 x: f64,
67 y: f64,
78 y: f64,
68 s: f64,
79 s: f64,
69 content: u32,
80 content: u32,
70− children: &mut bumpalo::collections::Vec<Node<'a>>,
81+ children: &mut bumpalo::collections::Vec<Node<'bump>>,
71 ) {
82 ) {
72 if s <= self.size {
83 if s <= self.size {
73 children.push(self.dot(cx, x, y, content));
84 children.push(self.dot(cx, x, y, content));
@@ -85,8 +96,8 @@ impl Container {
85 }
96 }
86}
97}
87
98
88−impl<'a> Render<'a> for Container {
99+impl Render for Container {
89− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
100+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
90 use dodrio::builder::div;
101 use dodrio::builder::div;
91
102
92 let elapsed = web_sys::window()
103 let elapsed = web_sys::window()
@@ -101,7 +112,7 @@ impl<'a> Render<'a> for Container {
101 let mut children = bumpalo::collections::Vec::new_in(cx.bump);
112 let mut children = bumpalo::collections::Vec::new_in(cx.bump);
102 self.triangle(cx, 0.0, 0.0, 1000.0, modulus, &mut children);
113 self.triangle(cx, 0.0, 0.0, 1000.0, modulus, &mut children);
103
114
104− div(&cx)
115+ div(cx.bump)
105 .attr("class", "container")
116 .attr("class", "container")
106 .attr("style", self.container_transform(cx, elapsed))
117 .attr("style", self.container_transform(cx, elapsed))
107 .children(children)
118 .children(children)
@@ -111,7 +122,7 @@ impl<'a> Render<'a> for Container {
111
122
112// Kick off a loop that keeps re-rendering on every animation frame.
123// Kick off a loop that keeps re-rendering on every animation frame.
113fn animate(window: Window, vdom: Vdom) {
124fn animate(window: Window, vdom: Vdom) {
114− let rc = <Rc<RefCell<Option<Closure<dyn FnMut()>>>>>::default();
125+ let rc: Rc<RefCell<Option<Closure<FnMut()>>>> = Rc::new(RefCell::new(None));
115 let rc2 = rc.clone();
126 let rc2 = rc.clone();
116 let window2 = window.clone();
127 let window2 = window.clone();
117 let weak = vdom.weak();
128 let weak = vdom.weak();
@@ -126,7 +137,7 @@ fn animate(window: Window, vdom: Vdom) {
126 .unchecked_ref::<js_sys::Function>(),
137 .unchecked_ref::<js_sys::Function>(),
127 )
138 )
128 .unwrap_throw();
139 .unwrap_throw();
129− }) as Box<dyn FnMut()>);
140+ }) as Box<FnMut()>);
130 window2
141 window2
131 .request_animation_frame(f.as_ref().unchecked_ref::<js_sys::Function>())
142 .request_animation_frame(f.as_ref().unchecked_ref::<js_sys::Function>())
132 .unwrap_throw();
143 .unwrap_throw();
examples/todomvc/Cargo.toml+12−11
@@ -5,21 +5,22 @@ name = "dodrio-todomvc"
5version = "0.1.0"
5version = "0.1.0"
6
6
7[dependencies]
7[dependencies]
8−cfg-if = "0.1.10"
8+cfg-if = "0.1.7"
9−dodrio = { path = "../..", features = ["serde"] }
9+dodrio = { path = "../.." }
10+futures = "0.1.26"
10−js-sys = "0.3.32"
11+js-sys = "0.3.16"
11−serde = { features = ["derive"], version = "1.0.114" }
12+serde = { features = ["derive"], version = "1.0.89" }
12−serde_json = "1.0.57"
13+serde_json = "1.0.39"
13−wasm-bindgen = "0.2.55"
14+wasm-bindgen = "0.2.39"
14−wasm-bindgen-futures = "0.4.5"
15+wasm-bindgen-futures = "0.3.16"
15
16
16# Optional dependencies for logging.
17# Optional dependencies for logging.
17console_error_panic_hook = { optional = true, version = "0.1.6" }
18console_error_panic_hook = { optional = true, version = "0.1.6" }
18−console_log = { optional = true, version = "0.2.0" }
19+console_log = { optional = true, version = "0.1.2" }
19−log = { optional = true, version = "0.4.11" }
20+log = { optional = true, version = "0.4.6" }
20
21
21[dependencies.web-sys]
22[dependencies.web-sys]
22−version = "0.3.32"
23+version = "0.3.16"
23features = [
24features = [
24 "Document",
25 "Document",
25 "Event",
26 "Event",
@@ -34,7 +35,7 @@ features = [
34]
35]
35
36
36[dev-dependencies]
37[dev-dependencies]
37−wasm-bindgen-test = "0.3.5"
38+wasm-bindgen-test = "0.2.39"
38
39
39[features]
40[features]
40logging = [
41logging = [
examples/todomvc/README.md+1−1
@@ -21,7 +21,7 @@ most important are:
21## Build
21## Build
22
22
23```
23```
24−wasm-pack build --target web
24+wasm-pack build --target no-modules
25```
25```
26
26
27## Serve
27## Serve
examples/todomvc/index.html+3−3
@@ -13,9 +13,9 @@
13 <footer class="info">
13 <footer class="info">
14 <p>Double-click to edit a todo</p>
14 <p>Double-click to edit a todo</p>
15 </footer>
15 </footer>
16− <script type="module">
17− import init from "./pkg/dodrio_todomvc.js";
16+ <script src="pkg/dodrio_todomvc.js"></script>
17+ <script>
18− init("./pkg/dodrio_todomvc_bg.wasm");
18+ wasm_bindgen("pkg/dodrio_todomvc_bg.wasm");
19 </script>
19 </script>
20 </body>
20 </body>
21</html>
21</html>
examples/todomvc/src/router.rsmode 100755 → 100644+21−23
@@ -4,8 +4,10 @@ use crate::todos::Todos;
4use crate::utils;
4use crate::utils;
5use crate::visibility::Visibility;
5use crate::visibility::Visibility;
6use dodrio::VdomWeak;
6use dodrio::VdomWeak;
7+use futures::prelude::*;
7use std::str::FromStr;
8use std::str::FromStr;
8−use wasm_bindgen::{prelude::*, JsCast};
9+use wasm_bindgen::prelude::*;
10+use wasm_bindgen::JsCast;
9
11
10/// Start the router.
12/// Start the router.
11pub fn start(vdom: VdomWeak) {
13pub fn start(vdom: VdomWeak) {
@@ -28,27 +30,23 @@ pub fn start(vdom: VdomWeak) {
28 v
30 v
29 });
31 });
30
32
31− wasm_bindgen_futures::spawn_local({
33+ wasm_bindgen_futures::spawn_local(
32− let vdom = vdom.clone();
33− async move {
34− let _ = vdom
35− .with_component({
34+ vdom.with_component({
36− let vdom = vdom.clone();
35+ let vdom = vdom.clone();
37− move |root| {
36+ move |root| {
38− let todos = root.unwrap_mut::<Todos>();
37+ let todos = root.unwrap_mut::<Todos>();
39− // If the todos' visibility already matches the event's
38+ // If the todos' visibility already matches the event's
40− // visibility, then there is nothing to do (ha). If they
39+ // visibility, then there is nothing to do (ha). If they
41− // don't match, then we need to update the todos' visibility
40+ // don't match, then we need to update the todos' visibility
42− // and re-render.
41+ // and re-render.
43− if todos.visibility() != new_vis {
42+ if todos.visibility() != new_vis {
44− todos.set_visibility(new_vis);
43+ todos.set_visibility(new_vis);
45− vdom.schedule_render();
44+ vdom.schedule_render();
46− }
45+ }
47− }
46+ }
48− })
47+ })
49− .await;
48+ .map_err(|_| ()),
50− }
51− });
49+ );
52 };
50 };
53
51
54 // Call it once to handle the initial `#` fragment.
52 // Call it once to handle the initial `#` fragment.
@@ -59,7 +57,7 @@ pub fn start(vdom: VdomWeak) {
59 // Note that if we ever intended to unmount our todos app, we would want to
57 // Note that if we ever intended to unmount our todos app, we would want to
60 // provide a method for removing this router's event listener and cleaning
58 // provide a method for removing this router's event listener and cleaning
61 // up after ourselves.
59 // up after ourselves.
62− let on_hash_change = Closure::wrap(Box::new(on_hash_change) as Box<dyn FnMut()>);
60+ let on_hash_change = Closure::wrap(Box::new(on_hash_change) as Box<FnMut()>);
63 let window = utils::window();
61 let window = utils::window();
64 window
62 window
65 .add_event_listener_with_callback("hashchange", on_hash_change.as_ref().unchecked_ref())
63 .add_event_listener_with_callback("hashchange", on_hash_change.as_ref().unchecked_ref())
examples/todomvc/src/todo.rs+27−83
@@ -1,19 +1,14 @@
1//! Type definition and `dodrio::Render` implementation for a single todo item.
1//! Type definition and `dodrio::Render` implementation for a single todo item.
2
2
3use crate::keys;
3use crate::keys;
4−use dodrio::{Cached, Node, Render, RenderContext, RootRender, VdomWeak};
4+use dodrio::{Node, Render, RenderContext, RootRender, VdomWeak};
5use serde::{Deserialize, Serialize};
5use serde::{Deserialize, Serialize};
6use std::marker::PhantomData;
6use std::marker::PhantomData;
7use wasm_bindgen::{prelude::*, JsCast};
7use wasm_bindgen::{prelude::*, JsCast};
8
8
9/// A single todo item.
9/// A single todo item.
10−#[derive(Default)]
11−pub struct Todo<C> {
12− inner: Cached<TodoInner<C>>,
13−}
14−
15#[derive(Serialize, Deserialize)]
10#[derive(Serialize, Deserialize)]
16−struct TodoInner<C> {
11+pub struct Todo<C> {
17 id: usize,
12 id: usize,
18 title: String,
13 title: String,
19 completed: bool,
14 completed: bool,
@@ -53,110 +48,91 @@ impl<C> Todo<C> {
53 let completed = false;
48 let completed = false;
54 let edits = None;
49 let edits = None;
55 Todo {
50 Todo {
56− inner: Cached::new(TodoInner {
57− id,
51+ id,
58− title,
52+ title,
59− completed,
53+ completed,
60− edits,
54+ edits,
61− _controller: PhantomData,
55+ _controller: PhantomData,
62− }),
63 }
56 }
64 }
57 }
65
58
66 /// Set this todo item's id.
59 /// Set this todo item's id.
67 pub fn set_id(&mut self, id: usize) {
60 pub fn set_id(&mut self, id: usize) {
68− if id != self.inner.id {
69− Cached::invalidate(&self.inner);
70− }
71− self.inner.id = id;
61+ self.id = id;
72 }
62 }
73
63
74 /// Is this `Todo` complete?
64 /// Is this `Todo` complete?
75 pub fn is_complete(&self) -> bool {
65 pub fn is_complete(&self) -> bool {
76− self.inner.completed
66+ self.completed
77 }
67 }
78
68
79 /// Mark the `Todo` as complete or not.
69 /// Mark the `Todo` as complete or not.
80 pub fn set_complete(&mut self, to: bool) {
70 pub fn set_complete(&mut self, to: bool) {
81− if to != self.inner.completed {
82− Cached::invalidate(&self.inner);
83− }
84− self.inner.completed = to;
71+ self.completed = to;
85 }
72 }
86
73
87 /// Get this todo's title.
74 /// Get this todo's title.
88 pub fn title(&self) -> &str {
75 pub fn title(&self) -> &str {
89− &self.inner.title
76+ &self.title
90 }
77 }
91
78
92 /// Set this todo item's title.
79 /// Set this todo item's title.
93 pub fn set_title<S: Into<String>>(&mut self, title: S) {
80 pub fn set_title<S: Into<String>>(&mut self, title: S) {
94− let title = title.into();
81+ self.title = title.into();
95− if title != self.inner.title {
96− Cached::invalidate(&self.inner);
97− }
98− self.inner.title = title;
99 }
82 }
100
83
101 /// Set the edits for this todo.
84 /// Set the edits for this todo.
102 pub fn set_edits<S: Into<String>>(&mut self, edits: Option<S>) {
85 pub fn set_edits<S: Into<String>>(&mut self, edits: Option<S>) {
103− let edits = edits.map(Into::into);
86+ self.edits = edits.map(Into::into);
104− if edits != self.inner.edits {
105− Cached::invalidate(&self.inner);
106− }
107− self.inner.edits = edits;
108 }
87 }
109
88
110 /// Take this todo's edits, leaving `None` in their place.
89 /// Take this todo's edits, leaving `None` in their place.
111 pub fn take_edits(&mut self) -> Option<String> {
90 pub fn take_edits(&mut self) -> Option<String> {
112− if self.inner.edits.is_some() {
113− Cached::invalidate(&self.inner);
114− }
115− self.inner.edits.take()
91+ self.edits.take()
116 }
92 }
117}
93}
118
94
119−impl<'a, C: TodoActions> Render<'a> for Todo<C> {
95+impl<C: TodoActions> Render for Todo<C> {
120− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
96+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
121 use dodrio::{
97 use dodrio::{
122 builder::*,
98 builder::*,
123 bumpalo::{self, collections::String},
99 bumpalo::{self, collections::String},
124 };
100 };
125
101
126− let id = self.inner.id;
102+ let id = self.id;
127− let title = self.inner.edits.as_ref().unwrap_or(&self.inner.title);
103+ let title = self.edits.as_ref().unwrap_or(&self.title);
128 let title = bumpalo::format!(in cx.bump, "{}", title).into_bump_str();
104 let title = bumpalo::format!(in cx.bump, "{}", title).into_bump_str();
129
105
130− li(&cx)
106+ li(cx.bump)
131 .attr("class", {
107 .attr("class", {
132 let mut class = String::new_in(cx.bump);
108 let mut class = String::new_in(cx.bump);
133− if self.inner.completed {
109+ if self.completed {
134 class.push_str("completed ");
110 class.push_str("completed ");
135 }
111 }
136− if self.inner.edits.is_some() {
112+ if self.edits.is_some() {
137 class.push_str("editing");
113 class.push_str("editing");
138 }
114 }
139 class.into_bump_str()
115 class.into_bump_str()
140 })
116 })
141 .children([
117 .children([
142− div(&cx)
118+ div(cx.bump)
143 .attr("class", "view")
119 .attr("class", "view")
144 .children([
120 .children([
145− input(&cx)
121+ input(cx.bump)
146 .attr("class", "toggle")
122 .attr("class", "toggle")
147 .attr("type", "checkbox")
123 .attr("type", "checkbox")
148− .bool_attr("checked", self.inner.completed)
124+ .bool_attr("checked", self.completed)
149 .on("click", move |root, vdom, _event| {
125 .on("click", move |root, vdom, _event| {
150 C::toggle_completed(root, vdom, id);
126 C::toggle_completed(root, vdom, id);
151 })
127 })
152 .finish(),
128 .finish(),
153− label(&cx)
129+ label(cx.bump)
154 .on("dblclick", move |root, vdom, _event| {
130 .on("dblclick", move |root, vdom, _event| {
155 C::begin_editing(root, vdom, id);
131 C::begin_editing(root, vdom, id);
156 })
132 })
157 .children([text(title)])
133 .children([text(title)])
158 .finish(),
134 .finish(),
159− button(&cx)
135+ button(cx.bump)
160 .attr("class", "destroy")
136 .attr("class", "destroy")
161 .on("click", move |root, vdom, _event| {
137 .on("click", move |root, vdom, _event| {
162 C::delete(root, vdom, id);
138 C::delete(root, vdom, id);
@@ -164,7 +140,7 @@ impl<'a, C: TodoActions> Render<'a> for Todo<C> {
164 .finish(),
140 .finish(),
165 ])
141 ])
166 .finish(),
142 .finish(),
167− input(&cx)
143+ input(cx.bump)
168 .attr("class", "edit")
144 .attr("class", "edit")
169 .attr("value", title)
145 .attr("value", title)
170 .attr("name", "title")
146 .attr("name", "title")
@@ -195,35 +171,3 @@ impl<'a, C: TodoActions> Render<'a> for Todo<C> {
195 .finish()
171 .finish()
196 }
172 }
197}
173}
198−
199−impl<C> Default for TodoInner<C> {
200− fn default() -> Self {
201− TodoInner {
202− id: Default::default(),
203− title: Default::default(),
204− completed: Default::default(),
205− edits: Default::default(),
206− _controller: PhantomData,
207− }
208− }
209−}
210−
211−impl<C> serde::Serialize for Todo<C> {
212− fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
213− where
214− S: serde::Serializer,
215− {
216− self.inner.serialize(serializer)
217− }
218−}
219−
220−impl<'de, C> Deserialize<'de> for Todo<C> {
221− fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
222− where
223− D: serde::Deserializer<'de>,
224− {
225− Ok(Todo {
226− inner: <Cached<TodoInner<C>>>::deserialize(deserializer)?,
227− })
228− }
229−}
examples/todomvc/src/todos.rsmode 100755 → 100644+30−26
@@ -9,7 +9,8 @@ use dodrio::{bumpalo, Node, Render, RenderContext, RootRender, VdomWeak};
9use serde::{Deserialize, Serialize};
9use serde::{Deserialize, Serialize};
10use std::marker::PhantomData;
10use std::marker::PhantomData;
11use std::mem;
11use std::mem;
12−use wasm_bindgen::{prelude::*, JsCast};
12+use wasm_bindgen::prelude::*;
13+use wasm_bindgen::JsCast;
13
14
14/// A collection of todos.
15/// A collection of todos.
15#[derive(Default, Serialize, Deserialize)]
16#[derive(Default, Serialize, Deserialize)]
@@ -28,7 +29,7 @@ pub struct Todos<C = Controller> {
28}
29}
29
30
30/// Actions for `Todos` that can be triggered by UI interactions.
31/// Actions for `Todos` that can be triggered by UI interactions.
31−pub trait TodosActions: 'static + TodoActions {
32+pub trait TodosActions: TodoActions {
32 /// Toggle the completion state of all todo items.
33 /// Toggle the completion state of all todo items.
33 fn toggle_all(root: &mut dyn RootRender, vdom: VdomWeak);
34 fn toggle_all(root: &mut dyn RootRender, vdom: VdomWeak);
34
35
@@ -49,7 +50,7 @@ pub trait TodosActions: 'static + TodoActions {
49impl<C> Todos<C> {
50impl<C> Todos<C> {
50 /// Construct a new todos set.
51 /// Construct a new todos set.
51 ///
52 ///
52− /// If an existing set is available in local storage, then use that,
53+ /// If an existing set is available in local storage, then us that,
53 /// otherwise create a new set.
54 /// otherwise create a new set.
54 pub fn new() -> Self
55 pub fn new() -> Self
55 where
56 where
@@ -132,14 +133,14 @@ impl<C> Todos<C> {
132
133
133/// Rendering helpers.
134/// Rendering helpers.
134impl<C: TodosActions> Todos<C> {
135impl<C: TodosActions> Todos<C> {
135− fn header<'a>(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
136+ fn header<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
136 use dodrio::builder::*;
137 use dodrio::builder::*;
137
138
138− header(&cx)
139+ header(cx.bump)
139 .attr("class", "header")
140 .attr("class", "header")
140 .children([
141 .children([
141− h1(&cx).children([text("todos")]).finish(),
142+ h1(cx.bump).children([text("todos")]).finish(),
142− input(&cx)
143+ input(cx.bump)
143 .on("input", |root, vdom, event| {
144 .on("input", |root, vdom, event| {
144 let input = event
145 let input = event
145 .target()
146 .target()
@@ -165,7 +166,7 @@ impl<C: TodosActions> Todos<C> {
165 .finish()
166 .finish()
166 }
167 }
167
168
168− fn todos_list<'a>(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
169+ fn todos_list<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
169 use dodrio::{builder::*, bumpalo::collections::Vec};
170 use dodrio::{builder::*, bumpalo::collections::Vec};
170
171
171 let mut todos = Vec::with_capacity_in(self.todos.len(), cx.bump);
172 let mut todos = Vec::with_capacity_in(self.todos.len(), cx.bump);
@@ -180,7 +181,7 @@ impl<C: TodosActions> Todos<C> {
180 .map(|t| t.render(cx)),
181 .map(|t| t.render(cx)),
181 );
182 );
182
183
183− section(&cx)
184+ section(cx.bump)
184 .attr("class", "main")
185 .attr("class", "main")
185 .attr(
186 .attr(
186 "visibility",
187 "visibility",
@@ -191,7 +192,7 @@ impl<C: TodosActions> Todos<C> {
191 },
192 },
192 )
193 )
193 .children([
194 .children([
194− input(&cx)
195+ input(cx.bump)
195 .attr("class", "toggle-all")
196 .attr("class", "toggle-all")
196 .attr("id", "toggle-all")
197 .attr("id", "toggle-all")
197 .attr("type", "checkbox")
198 .attr("type", "checkbox")
@@ -201,16 +202,19 @@ impl<C: TodosActions> Todos<C> {
201 C::toggle_all(root, vdom);
202 C::toggle_all(root, vdom);
202 })
203 })
203 .finish(),
204 .finish(),
204− label(&cx)
205+ label(cx.bump)
205 .attr("for", "toggle-all")
206 .attr("for", "toggle-all")
206 .children([text("Mark all as complete")])
207 .children([text("Mark all as complete")])
207 .finish(),
208 .finish(),
209+ ul(cx.bump)
208− ul(&cx).attr("class", "todo-list").children(todos).finish(),
210+ .attr("class", "todo-list")
211+ .children(todos)
212+ .finish(),
209 ])
213 ])
210 .finish()
214 .finish()
211 }
215 }
212
216
213− fn footer<'a>(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
217+ fn footer<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
214 use dodrio::builder::*;
218 use dodrio::builder::*;
215
219
216 let completed_count = self.todos.iter().filter(|t| t.is_complete()).count();
220 let completed_count = self.todos.iter().filter(|t| t.is_complete()).count();
@@ -228,20 +232,20 @@ impl<C: TodosActions> Todos<C> {
228 self.todos.iter().filter(|t| t.is_complete()).count()
232 self.todos.iter().filter(|t| t.is_complete()).count()
229 );
233 );
230
234
231− footer(&cx)
235+ footer(cx.bump)
232 .attr("class", "footer")
236 .attr("class", "footer")
233 .bool_attr("hidden", self.todos.is_empty())
237 .bool_attr("hidden", self.todos.is_empty())
234 .children([
238 .children([
235− span(&cx)
239+ span(cx.bump)
236 .attr("class", "todo-count")
240 .attr("class", "todo-count")
237 .children([
241 .children([
238− strong(&cx)
242+ strong(cx.bump)
239 .children([text(incomplete_count.into_bump_str())])
243 .children([text(incomplete_count.into_bump_str())])
240 .finish(),
244 .finish(),
241 text(items_left),
245 text(items_left),
242 ])
246 ])
243 .finish(),
247 .finish(),
244− ul(&cx)
248+ ul(cx.bump)
245 .attr("class", "filters")
249 .attr("class", "filters")
246 .children([
250 .children([
247 self.visibility_swap(cx, "#/", Visibility::All),
251 self.visibility_swap(cx, "#/", Visibility::All),
@@ -249,7 +253,7 @@ impl<C: TodosActions> Todos<C> {
249 self.visibility_swap(cx, "#/completed", Visibility::Completed),
253 self.visibility_swap(cx, "#/completed", Visibility::Completed),
250 ])
254 ])
251 .finish(),
255 .finish(),
252− button(&cx)
256+ button(cx.bump)
253 .on("click", |root, vdom, _event| {
257 .on("click", |root, vdom, _event| {
254 C::delete_completed(root, vdom);
258 C::delete_completed(root, vdom);
255 })
259 })
@@ -261,19 +265,19 @@ impl<C: TodosActions> Todos<C> {
261 .finish()
265 .finish()
262 }
266 }
263
267
264− fn visibility_swap<'a>(
268+ fn visibility_swap<'bump>(
265 &self,
269 &self,
266− cx: &mut RenderContext<'a>,
270+ cx: &mut RenderContext<'bump>,
267 url: &'static str,
271 url: &'static str,
268 target_vis: Visibility,
272 target_vis: Visibility,
269− ) -> Node<'a> {
273+ ) -> Node<'bump> {
270 use dodrio::builder::*;
274 use dodrio::builder::*;
271
275
272− li(&cx)
276+ li(cx.bump)
273 .on("click", move |root, vdom, _event| {
277 .on("click", move |root, vdom, _event| {
274 C::change_visibility(root, vdom, target_vis);
278 C::change_visibility(root, vdom, target_vis);
275 })
279 })
276− .children([a(&cx)
280+ .children([a(cx.bump)
277 .attr("href", url)
281 .attr("href", url)
278 .attr(
282 .attr(
279 "class",
283 "class",
@@ -289,11 +293,11 @@ impl<C: TodosActions> Todos<C> {
289 }
293 }
290}
294}
291
295
292−impl<'a, C: TodosActions> Render<'a> for Todos<C> {
296+impl<C: TodosActions> Render for Todos<C> {
293− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
297+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
294 use dodrio::builder::*;
298 use dodrio::builder::*;
295
299
296− div(&cx)
300+ div(cx.bump)
297 .children([self.header(cx), self.todos_list(cx), self.footer(cx)])
301 .children([self.header(cx), self.todos_list(cx), self.footer(cx)])
298 .finish()
302 .finish()
299 }
303 }
js/change-list-interpreter.jsdeleted−377
@@ -1,377 +0,0 @@
1−const decoder = new TextDecoder();
2−
3−function top(stack) {
4− return stack[stack.length - 1];
5−}
6−
7−function string(mem, pointer, length) {
8− const buf = mem.subarray(pointer, pointer + length);
9− return decoder.decode(buf);
10−}
11−
12−const OP_TABLE = [
13− // 0
14− function setText(interpreter, mem8, mem32, i) {
15− const pointer = mem32[i++];
16− const length = mem32[i++];
17− const str = string(mem8, pointer, length);
18− top(interpreter.stack).textContent = str;
19− return i;
20− },
21−
22− // 1
23− function removeSelfAndNextSiblings(interpreter, mem8, mem32, i) {
24− const node = interpreter.stack.pop();
25− let sibling = node.nextSibling;
26− while (sibling) {
27− const temp = sibling.nextSibling;
28− sibling.remove();
29− sibling = temp;
30− }
31− node.remove();
32− return i;
33− },
34−
35− // 2
36− function replaceWith(interpreter, mem8, mem32, i) {
37− const newNode = interpreter.stack.pop();
38− const oldNode = interpreter.stack.pop();
39− oldNode.replaceWith(newNode);
40− interpreter.stack.push(newNode);
41− return i;
42− },
43−
44− // 3
45− function setAttribute(interpreter, mem8, mem32, i) {
46− const nameId = mem32[i++];
47− const valueId = mem32[i++];
48− const name = interpreter.getCachedString(nameId);
49− const value = interpreter.getCachedString(valueId);
50− const node = top(interpreter.stack);
51− node.setAttribute(name, value);
52−
53− // Some attributes are "volatile" and don't work through `setAttribute`.
54− if (name === "value") {
55− node.value = value;
56− }
57− if (name === "checked") {
58− node.checked = true;
59− }
60− if (name === "selected") {
61− node.selected = true;
62− }
63−
64− return i;
65− },
66−
67− // 4
68− function removeAttribute(interpreter, mem8, mem32, i) {
69− const nameId = mem32[i++];
70− const name = interpreter.getCachedString(nameId);
71− const node = top(interpreter.stack);
72− node.removeAttribute(name);
73−
74− // Some attributes are "volatile" and don't work through `removeAttribute`.
75− if (name === "value") {
76− node.value = null;
77− }
78− if (name === "checked") {
79− node.checked = false;
80− }
81− if (name === "selected") {
82− node.selected = false;
83− }
84−
85− return i;
86− },
87−
88− // 5
89− function pushReverseChild(interpreter, mem8, mem32, i) {
90− const n = mem32[i++];
91− const parent = top(interpreter.stack);
92− const children = parent.childNodes;
93− const child = children[children.length - n - 1];
94− interpreter.stack.push(child);
95− return i;
96− },
97−
98− // 6
99− function popPushChild(interpreter, mem8, mem32, i) {
100− const n = mem32[i++];
101− interpreter.stack.pop();
102− const parent = top(interpreter.stack);
103− const children = parent.childNodes;
104− const child = children[n];
105− interpreter.stack.push(child);
106− return i;
107− },
108−
109− // 7
110− function pop(interpreter, mem8, mem32, i) {
111− interpreter.stack.pop();
112− return i;
113− },
114−
115− // 8
116− function appendChild(interpreter, mem8, mem32, i) {
117− const child = interpreter.stack.pop();
118− top(interpreter.stack).appendChild(child);
119− return i;
120− },
121−
122− // 9
123− function createTextNode(interpreter, mem8, mem32, i) {
124− const pointer = mem32[i++];
125− const length = mem32[i++];
126− const text = string(mem8, pointer, length);
127− interpreter.stack.push(document.createTextNode(text));
128− return i;
129− },
130−
131− // 10
132− function createElement(interpreter, mem8, mem32, i) {
133− const tagNameId = mem32[i++];
134− const tagName = interpreter.getCachedString(tagNameId);
135− interpreter.stack.push(document.createElement(tagName));
136− return i;
137− },
138−
139− // 11
140− function newEventListener(interpreter, mem8, mem32, i) {
141− const eventId = mem32[i++];
142− const eventType = interpreter.getCachedString(eventId);
143− const a = mem32[i++];
144− const b = mem32[i++];
145− const el = top(interpreter.stack);
146− el.addEventListener(eventType, interpreter.eventHandler);
147− el[`dodrio-a-${eventType}`] = a;
148− el[`dodrio-b-${eventType}`] = b;
149− return i;
150− },
151−
152− // 12
153− function updateEventListener(interpreter, mem8, mem32, i) {
154− const eventId = mem32[i++];
155− const eventType = interpreter.getCachedString(eventId);
156− const el = top(interpreter.stack);
157− el[`dodrio-a-${eventType}`] = mem32[i++];
158− el[`dodrio-b-${eventType}`] = mem32[i++];
159− return i;
160− },
161−
162− // 13
163− function removeEventListener(interpreter, mem8, mem32, i) {
164− const eventId = mem32[i++];
165− const eventType = interpreter.getCachedString(eventId);
166− const el = top(interpreter.stack);
167− el.removeEventListener(eventType, interpreter.eventHandler);
168− return i;
169− },
170−
171− // 14
172− function addCachedString(interpreter, mem8, mem32, i) {
173− const pointer = mem32[i++];
174− const length = mem32[i++];
175− const id = mem32[i++];
176− const str = string(mem8, pointer, length);
177− interpreter.addCachedString(str, id);
178− return i;
179− },
180−
181− // 15
182− function dropCachedString(interpreter, mem8, mem32, i) {
183− const id = mem32[i++];
184− interpreter.dropCachedString(id);
185− return i;
186− },
187−
188− // 16
189− function createElementNS(interpreter, mem8, mem32, i) {
190− const tagNameId = mem32[i++];
191− const tagName = interpreter.getCachedString(tagNameId);
192− const nsId = mem32[i++];
193− const ns = interpreter.getCachedString(nsId);
194− interpreter.stack.push(document.createElementNS(ns, tagName));
195− return i;
196− },
197−
198− // 17
199− function saveChildrenToTemporaries(interpreter, mem8, mem32, i) {
200− let temp = mem32[i++];
201− const start = mem32[i++];
202− const end = mem32[i++];
203− const parent = top(interpreter.stack);
204− const children = parent.childNodes;
205− for (let i = start; i < end; i++) {
206− interpreter.temporaries[temp++] = children[i];
207− }
208− return i;
209− },
210−
211− // 18
212− function pushChild(interpreter, mem8, mem32, i) {
213− const parent = top(interpreter.stack);
214− const n = mem32[i++];
215− const child = parent.childNodes[n];
216− interpreter.stack.push(child);
217− return i;
218− },
219−
220− // 19
221− function pushTemporary(interpreter, mem8, mem32, i) {
222− const temp = mem32[i++];
223− interpreter.stack.push(interpreter.temporaries[temp]);
224− return i;
225− },
226−
227− // 20
228− function insertBefore(interpreter, mem8, mem32, i) {
229− const before = interpreter.stack.pop();
230− const after = interpreter.stack.pop();
231− after.parentNode.insertBefore(before, after);
232− interpreter.stack.push(before);
233− return i;
234− },
235−
236− // 21
237− function popPushReverseChild(interpreter, mem8, mem32, i) {
238− const n = mem32[i++];
239− interpreter.stack.pop();
240− const parent = top(interpreter.stack);
241− const children = parent.childNodes;
242− const child = children[children.length - n - 1];
243− interpreter.stack.push(child);
244− return i;
245− },
246−
247− // 22
248− function removeChild(interpreter, mem8, mem32, i) {
249− const n = mem32[i++];
250− const parent = top(interpreter.stack);
251− const child = parent.childNodes[n];
252− child.remove();
253− return i;
254− },
255−
256− // 23
257− function setClass(interpreter, mem8, mem32, i) {
258− const classId = mem32[i++];
259− const className = interpreter.getCachedString(classId);
260− top(interpreter.stack).className = className;
261− return i;
262− },
263−
264− // 24
265− function saveTemplate(interpreter, mem8, mem32, i) {
266− const id = mem32[i++];
267− const template = top(interpreter.stack);
268− interpreter.saveTemplate(id, template.cloneNode(true));
269− return i;
270− },
271−
272− // 25
273− function pushTemplate(interpreter, mem8, mem32, i) {
274− const id = mem32[i++];
275− const template = interpreter.getTemplate(id);
276− interpreter.stack.push(template.cloneNode(true));
277− return i;
278− }
279−];
280−
281−export class ChangeListInterpreter {
282− constructor(container) {
283− this.trampoline = null;
284− this.container = container;
285− this.ranges = [];
286− this.stack = [];
287− this.strings = new Map();
288− this.temporaries = [];
289− this.templates = new Map();
290− }
291−
292− unmount() {
293− this.trampoline.mounted = false;
294−
295− // Null out all of our properties just to ensure that if we mistakenly ever
296− // call a method on this instance again, it will throw.
297− this.trampoline = null;
298− this.container = null;
299− this.ranges = null;
300− this.stack = null;
301− this.strings = null;
302− this.temporaries = null;
303− this.templates = null;
304− }
305−
306− addChangeListRange(start, len) {
307− this.ranges.push(start);
308− this.ranges.push(len);
309− }
310−
311− applyChanges(memory) {
312− if (this.ranges.length == 0) {
313− return;
314− }
315−
316− this.stack.push(this.container.firstChild);
317− const mem8 = new Uint8Array(memory.buffer);
318− const mem32 = new Uint32Array(memory.buffer);
319−
320− for (let i = 0; i < this.ranges.length; i += 2) {
321− const start = this.ranges[i];
322− const len = this.ranges[i + 1];
323− this.applyChangeRange(mem8, mem32, start, len);
324− }
325−
326− this.ranges.length = 0;
327− this.stack.length = 0;
328− this.temporaries.length = 0;
329− }
330−
331− applyChangeRange(mem8, mem32, start, len) {
332− const end = (start + len) / 4;
333− for (let i = start / 4; i < end; ) {
334− const op = mem32[i++];
335− i = OP_TABLE[op](this, mem8, mem32, i);
336− }
337− }
338−
339− addCachedString(str, id) {
340− this.strings.set(id, str);
341− }
342−
343− dropCachedString(id) {
344− this.strings.delete(id);
345− }
346−
347− getCachedString(id) {
348− return this.strings.get(id);
349− }
350−
351− saveTemplate(id, template) {
352− this.templates.set(id, template);
353− }
354−
355− getTemplate(id) {
356− return this.templates.get(id);
357− }
358−
359− initEventsTrampoline(trampoline) {
360− this.trampoline = trampoline;
361− trampoline.mounted = true;
362− this.eventHandler = function(event) {
363− if (!trampoline.mounted) {
364− throw new Error("invocation of listener after VDOM has been unmounted");
365− }
366−
367− // `this` always refers to the element the handler was added to.
368− // Since we're adding the handler to all elements our content wants
369− // to listen for events on, this ensures that we always get the right
370− // values for `a` and `b`.
371− const type = event.type;
372− const a = this[`dodrio-a-${type}`];
373− const b = this[`dodrio-b-${type}`];
374− trampoline(event, a, b);
375− }
376− }
377−}
js/change-list.jsnew file+289
@@ -0,0 +1,289 @@
1+const decoder = new TextDecoder();
2+
3+function top(stack) {
4+ return stack[stack.length - 1];
5+}
6+
7+function string(mem, pointer, length) {
8+ const buf = mem.subarray(pointer, pointer + length);
9+ return decoder.decode(buf);
10+}
11+
12+const OP_TABLE = [
13+ // 0
14+ function setText(changeList, mem8, mem32, i) {
15+ const pointer = mem32[i++];
16+ const length = mem32[i++];
17+ const str = string(mem8, pointer, length);
18+ top(changeList.stack).textContent = str;
19+ return i;
20+ },
21+
22+ // 1
23+ function removeSelfAndNextSiblings(changeList, mem8, mem32, i) {
24+ const node = changeList.stack.pop();
25+ let sibling = node.nextSibling;
26+ while (sibling) {
27+ const temp = sibling.nextSibling;
28+ sibling.remove();
29+ sibling = temp;
30+ }
31+ node.remove();
32+ return i;
33+ },
34+
35+ // 2
36+ function replaceWith(changeList, mem8, mem32, i) {
37+ const newNode = changeList.stack.pop();
38+ const oldNode = changeList.stack.pop();
39+ oldNode.replaceWith(newNode);
40+ changeList.stack.push(newNode);
41+ return i;
42+ },
43+
44+ // 3
45+ function setAttribute(changeList, mem8, mem32, i) {
46+ const nameId = mem32[i++];
47+ const valueId = mem32[i++];
48+ const name = changeList.getString(nameId);
49+ const value = changeList.getString(valueId);
50+ const node = top(changeList.stack);
51+ node.setAttribute(name, value);
52+
53+ // Some attributes are "volatile" and don't work through `setAttribute`.
54+ if (name === "value") {
55+ node.value = value;
56+ }
57+ if (name === "checked") {
58+ node.checked = true;
59+ }
60+ if (name === "selected") {
61+ node.selected = true;
62+ }
63+
64+ return i;
65+ },
66+
67+ // 4
68+ function removeAttribute(changeList, mem8, mem32, i) {
69+ const nameId = mem32[i++];
70+ const name = changeList.getString(nameId);
71+ const node = top(changeList.stack);
72+ node.removeAttribute(name);
73+
74+ // Some attributes are "volatile" and don't work through `removeAttribute`.
75+ if (name === "value") {
76+ node.value = null;
77+ }
78+ if (name === "checked") {
79+ node.checked = false;
80+ }
81+ if (name === "selected") {
82+ node.selected = false;
83+ }
84+
85+ return i;
86+ },
87+
88+ // 5
89+ function pushFirstChild(changeList, mem8, mem32, i) {
90+ changeList.stack.push(top(changeList.stack).firstChild);
91+ return i;
92+ },
93+
94+ // 6
95+ function popPushNextSibling(changeList, mem8, mem32, i) {
96+ const node = changeList.stack.pop();
97+ changeList.stack.push(node.nextSibling);
98+ return i;
99+ },
100+
101+ // 7
102+ function pop(changeList, mem8, mem32, i) {
103+ changeList.stack.pop();
104+ return i;
105+ },
106+
107+ // 8
108+ function appendChild(changeList, mem8, mem32, i) {
109+ const child = changeList.stack.pop();
110+ top(changeList.stack).appendChild(child);
111+ return i;
112+ },
113+
114+ // 9
115+ function createTextNode(changeList, mem8, mem32, i) {
116+ const pointer = mem32[i++];
117+ const length = mem32[i++];
118+ const text = string(mem8, pointer, length);
119+ changeList.stack.push(document.createTextNode(text));
120+ return i;
121+ },
122+
123+ // 10
124+ function createElement(changeList, mem8, mem32, i) {
125+ const tagNameId = mem32[i++];
126+ const tagName = changeList.getString(tagNameId);
127+ changeList.stack.push(document.createElement(tagName));
128+ return i;
129+ },
130+
131+ // 11
132+ function newEventListener(changeList, mem8, mem32, i) {
133+ const eventId = mem32[i++];
134+ const eventType = changeList.getString(eventId);
135+ const a = mem32[i++];
136+ const b = mem32[i++];
137+ const el = top(changeList.stack);
138+ el.addEventListener(eventType, changeList.eventHandler);
139+ el[`dodrio-a-${eventType}`] = a;
140+ el[`dodrio-b-${eventType}`] = b;
141+ return i;
142+ },
143+
144+ // 12
145+ function updateEventListener(changeList, mem8, mem32, i) {
146+ const eventId = mem32[i++];
147+ const eventType = changeList.getString(eventId);
148+ const el = top(changeList.stack);
149+ el[`dodrio-a-${eventType}`] = mem32[i++];
150+ el[`dodrio-b-${eventType}`] = mem32[i++];
151+ return i;
152+ },
153+
154+ // 13
155+ function removeEventListener(changeList, mem8, mem32, i) {
156+ const eventId = mem32[i++];
157+ const eventType = changeList.getString(eventId);
158+ const el = top(changeList.stack);
159+ el.removeEventListener(eventType, changeList.eventHandler);
160+ return i;
161+ },
162+
163+ // 14
164+ function addString(changeList, mem8, mem32, i) {
165+ const pointer = mem32[i++];
166+ const length = mem32[i++];
167+ const id = mem32[i++];
168+ const str = string(mem8, pointer, length);
169+ changeList.addString(str, id);
170+ return i;
171+ },
172+
173+ // 15
174+ function dropString(changeList, mem8, mem32, i) {
175+ const id = mem32[i++];
176+ changeList.dropString(id);
177+ return i;
178+ },
179+
180+ // 16
181+ function createElementNS(changeList, mem8, mem32, i) {
182+ const tagNameId = mem32[i++];
183+ const tagName = changeList.getString(tagNameId);
184+ const nsId = mem32[i++];
185+ const ns = changeList.getString(nsId);
186+ changeList.stack.push(document.createElementNS(ns, tagName));
187+ return i;
188+ },
189+
190+ // 17
191+ function setAttributeNS(changeList, mem8, mem32, i) {
192+ const nameId = mem32[i++];
193+ const valueId = mem32[i++];
194+ const name = changeList.getString(nameId);
195+ const value = changeList.getString(valueId);
196+ const node = top(changeList.stack);
197+ node.setAttributeNS(null, name, value);
198+ return i;
199+ }
200+];
201+
202+// export
203+class ChangeList {
204+ constructor(container) {
205+ this.trampoline = null;
206+ this.container = container;
207+ this.ranges = [];
208+ this.stack = [];
209+ this.strings = new Map();
210+ }
211+
212+ unmount() {
213+ this.trampoline.mounted = false;
214+
215+ // Null out all of our properties just to ensure that if we mistakenly ever
216+ // call a method on this instance again, it will throw.
217+ this.trampoline = null;
218+ this.container = null;
219+ this.ranges = null;
220+ this.stack = null;
221+ this.strings = null;
222+ }
223+
224+ addChangeListRange(start, len) {
225+ this.ranges.push(start);
226+ this.ranges.push(len);
227+ }
228+
229+ applyChanges(memory) {
230+ if (this.ranges.length == 0) {
231+ return;
232+ }
233+
234+ this.stack.push(this.container.firstChild);
235+ const mem8 = new Uint8Array(memory.buffer);
236+ const mem32 = new Uint32Array(memory.buffer);
237+
238+ for (let i = 0; i < this.ranges.length; i += 2) {
239+ const start = this.ranges[i];
240+ const len = this.ranges[i + 1];
241+ this.applyChangeRange(mem8, mem32, start, len);
242+ }
243+
244+ this.ranges.length = 0;
245+ this.stack.length = 0;
246+ }
247+
248+ applyChangeRange(mem8, mem32, start, len) {
249+ const end = (start + len) / 4;
250+ for (let i = start / 4; i < end; ) {
251+ const op = mem32[i++];
252+ i = OP_TABLE[op](this, mem8, mem32, i);
253+ }
254+ }
255+
256+ addString(str, id) {
257+ this.strings.set(id, str);
258+ }
259+
260+ dropString(id) {
261+ this.strings.delete(id);
262+ }
263+
264+ getString(id) {
265+ return this.strings.get(id);
266+ }
267+
268+ initEventsTrampoline(trampoline) {
269+ this.trampoline = trampoline;
270+ trampoline.mounted = true;
271+ this.eventHandler = function(event) {
272+ if (!trampoline.mounted) {
273+ throw new Error("invocation of listener after VDOM has been unmounted");
274+ }
275+
276+ // `this` always refers to the element the handler was added to.
277+ // Since we're adding the handler to all elements our content wants
278+ // to listen for events on, this ensures that we always get the right
279+ // values for `a` and `b`.
280+ const type = event.type;
281+ const a = this[`dodrio-a-${type}`];
282+ const b = this[`dodrio-b-${type}`];
283+ trampoline(event, a, b);
284+ }
285+ }
286+}
287+window.ChangeList = ChangeList;
288+
289+//# sourceURL=dodrio/change-list.js
js/package-lock.jsonnew file+5
@@ -0,0 +1,5 @@
1+{
2+ "name": "dodrio",
3+ "version": "0.1.0",
4+ "lockfileVersion": 1
5+}
js/package.jsonnew file+11
@@ -0,0 +1,11 @@
1+{
2+ "name": "dodrio",
3+ "version": "0.1.0",
4+ "description": "Dodrio",
5+ "main": "dodrio.js",
6+ "scripts": {
7+ "test": "echo \"Error: no test specified\" && exit 1"
8+ },
9+ "author": "Nick Fitzgerald <fitzgen@gmail.com>",
10+ "license": "MPL-2.0"
11+}
js/strace.jsdeleted−80
@@ -1,80 +0,0 @@
1−export function initStrace() {
2− instrumentAll(Element.prototype);
3− instrumentAll(Document.prototype);
4− instrumentAll(Node.prototype);
5− instrumentAll(EventTarget.prototype);
6−}
7−
8−const counts = new Map;
9−counts.total = 0;
10−
11−let timer = null;
12−
13−function log(ctorName, kind, key) {
14− counts.total += 1;
15−
16− const entry = `${kind} ${ctorName}#${key}`
17− const count = counts.get(entry);
18− if (count === undefined) {
19− counts.set(entry, 1);
20− } else {
21− counts.set(entry, count + 1);
22− }
23−
24− if (timer !== null) {
25− clearTimeout(timer);
26− }
27− timer = setTimeout(dumpAndReset, 100);
28−}
29−
30−function dumpAndReset() {
31− const data = [...counts]
32− .sort((a, b) => b[1] - a[1])
33− .map(a => ({ "DOM Method": a[0], "Count": a[1] }));
34−
35− data.push({ "DOM Method": "<total>", "Count": counts.total });
36−
37− console.table(data, ["DOM Method", "Count"]);
38−
39− counts.clear();
40− counts.total = 0;
41−}
42−
43−function instrument(proto, key, desc) {
44− const ctorName = proto.constructor.name;
45−
46− if (typeof desc.value == "function") {
47− const f = desc.value;
48− desc.value = function (...args) {
49− log(ctorName, "call", key);
50− return f.apply(this, args);
51− };
52− }
53−
54− if (typeof desc.get == "function") {
55− const get = desc.get;
56− desc.get = function (...args) {
57− log(ctorName, "get", key);
58− return get.apply(this, args);
59− };
60− }
61−
62− if (typeof desc.set == "function") {
63− const set = desc.set;
64− desc.set = function (...args) {
65− log(ctorName, "set", key);
66− return set.apply(this, args);
67− };
68− }
69−
70− Object.defineProperty(proto, key, desc);
71−}
72−
73−function instrumentAll(proto) {
74− for (const key of Object.keys(proto)) {
75− const desc = Object.getOwnPropertyDescriptor(proto, key);
76− if (desc.configurable) {
77− instrument(proto, key, desc);
78− }
79− }
80−}
src/builder.rs+9−75
@@ -1,6 +1,6 @@
1//! Helpers for building virtual DOM nodes.
1//! Helpers for building virtual DOM nodes.
2
2
3−use crate::{node::NodeKey, Attribute, Listener, Node, RootRender, VdomWeak};
3+use crate::{Attribute, Listener, Node, RootRender, VdomWeak};
4use bumpalo::Bump;
4use bumpalo::Bump;
5
5
6/// A virtual DOM element builder.
6/// A virtual DOM element builder.
@@ -16,7 +16,6 @@ where
16 Children: 'a + AsRef<[Node<'a>]>,
16 Children: 'a + AsRef<[Node<'a>]>,
17{
17{
18 bump: &'a Bump,
18 bump: &'a Bump,
19− key: NodeKey,
20 tag_name: &'a str,
19 tag_name: &'a str,
21 listeners: Listeners,
20 listeners: Listeners,
22 attributes: Attributes,
21 attributes: Attributes,
@@ -55,14 +54,9 @@ impl<'a>
55 /// let my_element_builder = ElementBuilder::new(&b, tag_name);
54 /// let my_element_builder = ElementBuilder::new(&b, tag_name);
56 /// # fn flip_coin() -> bool { true }
55 /// # fn flip_coin() -> bool { true }
57 /// ```
56 /// ```
58− pub fn new<B>(bump: B, tag_name: &'a str) -> Self
57+ pub fn new(bump: &'a Bump, tag_name: &'a str) -> Self {
59− where
60− B: Into<&'a Bump>,
61− {
62− let bump = bump.into();
63 ElementBuilder {
58 ElementBuilder {
64 bump,
59 bump,
65− key: NodeKey::NONE,
66 tag_name,
60 tag_name,
67 listeners: bumpalo::collections::Vec::new_in(bump),
61 listeners: bumpalo::collections::Vec::new_in(bump),
68 attributes: bumpalo::collections::Vec::new_in(bump),
62 attributes: bumpalo::collections::Vec::new_in(bump),
@@ -112,7 +106,6 @@ where
112 {
106 {
113 ElementBuilder {
107 ElementBuilder {
114 bump: self.bump,
108 bump: self.bump,
115− key: self.key,
116 tag_name: self.tag_name,
109 tag_name: self.tag_name,
117 listeners,
110 listeners,
118 attributes: self.attributes,
111 attributes: self.attributes,
@@ -151,7 +144,6 @@ where
151 {
144 {
152 ElementBuilder {
145 ElementBuilder {
153 bump: self.bump,
146 bump: self.bump,
154− key: self.key,
155 tag_name: self.tag_name,
147 tag_name: self.tag_name,
156 listeners: self.listeners,
148 listeners: self.listeners,
157 attributes,
149 attributes,
@@ -190,7 +182,6 @@ where
190 {
182 {
191 ElementBuilder {
183 ElementBuilder {
192 bump: self.bump,
184 bump: self.bump,
193− key: self.key,
194 tag_name: self.tag_name,
185 tag_name: self.tag_name,
195 listeners: self.listeners,
186 listeners: self.listeners,
196 attributes: self.attributes,
187 attributes: self.attributes,
@@ -209,7 +200,7 @@ where
209 /// let b = Bump::new();
200 /// let b = Bump::new();
210 ///
201 ///
211 /// // Create a `<td>` tag with an xhtml namespace
202 /// // Create a `<td>` tag with an xhtml namespace
212− /// let my_td = td(&b)
203+ /// let my_div = td(&b)
213 /// .namespace(Some("http://www.w3.org/1999/xhtml"))
204 /// .namespace(Some("http://www.w3.org/1999/xhtml"))
214 /// .finish();
205 /// .finish();
215 /// ```
206 /// ```
@@ -217,7 +208,6 @@ where
217 pub fn namespace(self, namespace: Option<&'a str>) -> Self {
208 pub fn namespace(self, namespace: Option<&'a str>) -> Self {
218 ElementBuilder {
209 ElementBuilder {
219 bump: self.bump,
210 bump: self.bump,
220− key: self.key,
221 tag_name: self.tag_name,
211 tag_name: self.tag_name,
222 listeners: self.listeners,
212 listeners: self.listeners,
223 attributes: self.attributes,
213 attributes: self.attributes,
@@ -226,45 +216,6 @@ where
226 }
216 }
227 }
217 }
228
218
229− /// Set this element's key.
230− ///
231− /// When diffing sets of siblings, if an old sibling and new sibling share a
232− /// key, then they will always reuse the same physical DOM node. This is
233− /// important when using CSS animations, web components, third party JS, or
234− /// anything else that makes the diffing implementation observable.
235− ///
236− /// Do not use keys if such a scenario does not apply. Keyed diffing is
237− /// generally more expensive than not, since it is putting greater
238− /// constraints on the diffing algorithm.
239− ///
240− /// # Invariants You Must Uphold
241− ///
242− /// The key may not be `u32::MAX`, which is a reserved key value.
243− ///
244− /// Keys must be unique among siblings.
245− ///
246− /// All sibling nodes must be keyed, or they must all not be keyed. You may
247− /// not mix keyed and unkeyed siblings.
248− ///
249− /// # Example
250− ///
251− /// ```no_run
252− /// use dodrio::{builder::*, bumpalo::Bump};
253− ///
254− /// let b = Bump::new();
255− ///
256− /// let my_li = li(&b)
257− /// .key(1337)
258− /// .finish();
259− /// ```
260− #[inline]
261− pub fn key(mut self, key: u32) -> Self {
262− use std::u32;
263− debug_assert!(key != u32::MAX);
264− self.key = NodeKey(key);
265− self
266− }
267−
268 /// Create the virtual DOM node described by this builder.
219 /// Create the virtual DOM node described by this builder.
269 ///
220 ///
270 /// # Example
221 /// # Example
@@ -282,22 +233,12 @@ where
282 /// ```
233 /// ```
283 #[inline]
234 #[inline]
284 pub fn finish(self) -> Node<'a> {
235 pub fn finish(self) -> Node<'a> {
285− let children: &'a Children = self.bump.alloc(self.children);
286− let children: &'a [Node<'a>] = children.as_ref();
287−
288− let listeners: &'a Listeners = self.bump.alloc(self.listeners);
289− let listeners: &'a [Listener<'a>] = listeners.as_ref();
290−
291− let attributes: &'a Attributes = self.bump.alloc(self.attributes);
292− let attributes: &'a [Attribute<'a>] = attributes.as_ref();
293−
294 Node::element(
236 Node::element(
295 self.bump,
237 self.bump,
296− self.key,
297 self.tag_name,
238 self.tag_name,
298− listeners,
239+ self.listeners,
299− attributes,
240+ self.attributes,
300− children,
241+ self.children,
301 self.namespace,
242 self.namespace,
302 )
243 )
303 }
244 }
@@ -437,17 +378,14 @@ macro_rules! builder_constructors {
437 $(
378 $(
438 $(#[$attr])*
379 $(#[$attr])*
439 #[inline]
380 #[inline]
440− pub fn $name<'a, B>(
381+ pub fn $name<'a>(
441− bump: B,
382+ bump: &'a Bump,
442 ) -> ElementBuilder<
383 ) -> ElementBuilder<
443 'a,
384 'a,
444 bumpalo::collections::Vec<'a, Listener<'a>>,
385 bumpalo::collections::Vec<'a, Listener<'a>>,
445 bumpalo::collections::Vec<'a, Attribute<'a>>,
386 bumpalo::collections::Vec<'a, Attribute<'a>>,
446 bumpalo::collections::Vec<'a, Node<'a>>,
387 bumpalo::collections::Vec<'a, Node<'a>>,
447− >
388+ > {
448− where
449− B: Into<&'a Bump>
450− {
451 ElementBuilder::new(bump, stringify!($name))
389 ElementBuilder::new(bump, stringify!($name))
452 }
390 }
453 )*
391 )*
@@ -1010,10 +948,6 @@ builder_constructors! {
1010 /// [`<rect>`](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/rect)
948 /// [`<rect>`](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/rect)
1011 /// element.
949 /// element.
1012 rect <> "http://www.w3.org/2000/svg";
950 rect <> "http://www.w3.org/2000/svg";
1013− /// Build a
1014− /// [`<image>`](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/image)
1015− /// element.
1016− image <> "http://www.w3.org/2000/svg";
1017}
951}
1018
952
1019/// Construct a text node.
953/// Construct a text node.
src/cached.rsdeleted−229
@@ -1,229 +0,0 @@
1−use crate::{
2− cached_set::CachedSet,
3− node::{CachedNode, NodeKey},
4− Node, Render, RenderContext,
5−};
6−use std::any::TypeId;
7−use std::cell::Cell;
8−use std::ops::{Deref, DerefMut};
9−
10−/// A renderable that supports caching for when rendering is expensive but can
11−/// generate the same DOM tree.
12−///
13−/// # Example
14−///
15−/// The [TodoMVC
16−/// example](https://github.com/fitzgen/dodrio/blob/master/examples/todomvc/src/todo.rs)
17−/// caches individual todo items.
18−#[derive(Clone, Debug, Default)]
19−pub struct Cached<R>
20−where
21− R: Default,
22−{
23− inner: R,
24− cached: Cell<Option<CachedNode>>,
25−}
26−
27−pub_unstable_internal! {
28− #[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
29− pub(crate) struct TemplateId(TypeId);
30−}
31−
32−impl<R> Cached<R>
33−where
34− R: Default,
35−{
36− /// Construct a new `Cached<R>` of an inner `R`.
37− ///
38− /// # Example
39− ///
40− /// ```
41− /// use dodrio::{Cached, Node, Render, RenderContext};
42− ///
43− /// #[derive(Default)]
44− /// pub struct Counter {
45− /// count: u32,
46− /// }
47− ///
48− /// impl<'a> Render<'a> for Counter {
49− /// fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
50− /// // ...
51− /// # unimplemented!()
52− /// }
53− /// }
54− ///
55− /// // Create a render-able counter.
56− /// let counter = Counter { count: 0 };
57− ///
58− /// // And cache its rendering!
59− /// let cached_counter = Cached::new(counter);
60− /// ```
61− #[inline]
62− pub fn new(inner: R) -> Cached<R> {
63− let cached = Cell::new(None);
64− Cached { inner, cached }
65− }
66−
67− /// Invalidate the cached rendering.
68− ///
69− /// This method should be called whenever the inner `R` must be re-rendered,
70− /// and the cached `Node` from the last time `R::render` was invoked can no
71− /// longer be re-used.
72− ///
73− /// # Example
74− ///
75− /// The `Cached<Hello>` component must have its cache invalidated whenever
76− /// the `who` string is changed, or else the cached rendering will keep
77− /// displaying greetings to old `who`s.
78− ///
79− /// ```
80− /// use dodrio::{bumpalo, Cached, Node, Render, RenderContext};
81− ///
82− /// /// A component that renders to "<p>Hello, {who}!</p>"
83− /// #[derive(Default)]
84− /// pub struct Hello {
85− /// who: String
86− /// }
87− ///
88− /// impl<'a> Render<'a> for Hello {
89− /// fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
90− /// use dodrio::builder::*;
91− /// let greeting = bumpalo::format!(in cx.bump, "Hello, {}!", self.who);
92− /// p(&cx)
93− /// .children([text(greeting.into_bump_str())])
94− /// .finish()
95− /// }
96− /// }
97− ///
98− /// /// Whenever a `Cached<Hello>`'s `who` is updated, we need to invalidate the
99− /// /// cache so that we don't keep displaying greetings to old `who`s.
100− /// pub fn set_who(hello: &mut Cached<Hello>, who: String) {
101− /// hello.who = who;
102− /// Cached::invalidate(hello);
103− /// }
104− /// ```
105− #[inline]
106− pub fn invalidate(cached: &Self) {
107− cached.cached.set(None);
108− }
109−
110− /// Convert a `Cached<R>` back into a plain `R`.
111− #[inline]
112− pub fn into_inner(cached: Self) -> R {
113− cached.inner
114− }
115−}
116−
117−impl<R> Cached<R>
118−where
119− R: 'static + Default,
120−{
121− pub(crate) fn template_id() -> TemplateId {
122− TemplateId(TypeId::of::<R>())
123− }
124−}
125−
126−impl<R> Deref for Cached<R>
127−where
128− R: Default,
129−{
130− type Target = R;
131−
132− fn deref(&self) -> &R {
133− &self.inner
134− }
135−}
136−
137−impl<R> DerefMut for Cached<R>
138−where
139− R: Default,
140−{
141− fn deref_mut(&mut self) -> &mut R {
142− &mut self.inner
143− }
144−}
145−
146−impl<'a, R> Render<'a> for Cached<R>
147−where
148− R: 'static + Default + for<'b> Render<'b>,
149−{
150− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
151− let template = cx.template::<R>();
152− let cached = match self.cached.get() {
153− // This does-the-cache-contain-this-id check is necessary because
154− // the same `Cached<R>` instance can be rendered into vdom A, which
155− // will save the results into A's cached set and yield id X. Then,
156− // it can be rendered *again* into a second vdom B, and B's cached
157− // set does not have the saved results for id X. If we didn't have
158− // this check, instead of a cache miss, we would have a panic.
159− //
160− // This scenario should basically never happen in the real world,
161− // however. If we ever find that it is worth sharing a cached render
162− // component between multiple vdoms, and want to avoid these
163− // "unnecessary" cache misses, we can do this:
164− //
165− // * Make each `Cached<R>` have an instance id and generation
166− // counter.
167− //
168− // * On invalidation, bump the generation counter.
169− //
170− // * Add a generation member to the `CacheEntry`.
171− //
172− // * Each vdom maintains a map from `Cached<R>` instance id to
173− // `CacheEntry`s.
174− //
175− // * We only re-use the cached results if the `Cached<R>`'s
176− // generation counter matches the entry in the vdom's cached set.
177− //
178− // This is all do-able but is a bit more book keeping than we really
179− // want to do unless it is well motivated.
180− Some(cached)
181− if {
182− let cached_set = cx.cached_set.borrow();
183− cached_set.contains(cached.id)
184− } =>
185− {
186− cached
187− }
188− _ => {
189− let mut key = NodeKey::NONE;
190− let id = CachedSet::insert(cx, false, template, |nested_cx| {
191− let node = self.inner.render(nested_cx);
192− key = node.key();
193− node
194− });
195− let cached = CachedNode { id, key };
196− self.cached.set(Some(cached));
197− cached
198− }
199− };
200−
201− cached.into()
202− }
203−}
204−
205−#[cfg(feature = "serde")]
206−impl<R> serde::Serialize for Cached<R>
207−where
208− R: Default + serde::Serialize,
209−{
210− fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
211− where
212− S: serde::Serializer,
213− {
214− self.inner.serialize(serializer)
215− }
216−}
217−
218−#[cfg(feature = "serde")]
219−impl<'de, R> serde::Deserialize<'de> for Cached<R>
220−where
221− R: Default + serde::Deserialize<'de>,
222−{
223− fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
224− where
225− D: serde::Deserializer<'de>,
226− {
227− R::deserialize(deserializer).map(Cached::new)
228− }
229−}
src/cached_set.rsdeleted−186
@@ -1,186 +0,0 @@
1−use crate::{
2− events::EventsRegistry,
3− node::{Node, NodeKind},
4− render_context::RenderContext,
5−};
6−use bumpalo::Bump;
7−use fxhash::{FxHashMap, FxHashSet};
8−use std::sync::atomic::{AtomicUsize, Ordering};
9−use std::u32;
10−use wasm_bindgen::prelude::*;
11−
12−static ID_COUNTER: AtomicUsize = AtomicUsize::new(0);
13−
14−pub_unstable_internal! {
15− #[derive(Debug, Default)]
16− pub(crate) struct CachedSet {
17− items: FxHashMap<CacheId, CacheEntry>,
18− }
19−}
20−
21−pub_unstable_internal! {
22− #[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
23− pub(crate) struct CacheId(u32);
24−}
25−
26−#[derive(Debug)]
27−pub(crate) struct CacheEntry {
28− bump: Bump,
29−
30− // Actually a reference into `bump`.
31− node: *const Node<'static>,
32−
33− // All the other cached entries that `node` references (including transitive
34− // edges). By eagerly following transitive edges and recording them the
35− // once, we don't have to repeat the tracing every time we want to garbage
36− // collect cache entries.
37− edges: FxHashSet<CacheId>,
38−
39− // The template for this cached virtual subtree.
40− //
41− // When a cache entry has a template, that means that the `ChangeList` will
42− // lazily build a physical DOM subtree based on the template, and when we
43− // create new versions of this cached result, we clone the template's
44− // physical DOM subtree and then modify it, rather than building the cached
45− // result up from scratch. This is a nice win because we bounce between JS
46− // and DOM methods less often, and get the C++ DOM implementation to do most
47− // of the subtree construction for us.
48− template: Option<CacheId>,
49−
50− // Whether this entry should never be garbage collected. Typically only
51− // templates are pinned.
52− pinned: bool,
53−}
54−
55−impl From<CacheId> for u32 {
56− #[inline]
57− fn from(id: CacheId) -> u32 {
58− id.0
59− }
60−}
61−
62−impl CachedSet {
63− pub(crate) fn new_roots_set(&self) -> FxHashSet<CacheId> {
64− let mut roots = FxHashSet::default();
65− roots.reserve(self.items.len());
66− roots
67− }
68−
69− pub(crate) fn gc(&mut self, registry: &mut EventsRegistry, roots: FxHashSet<CacheId>) {
70− let mut marked = FxHashSet::default();
71− marked.reserve(self.items.len());
72−
73− for root in roots {
74− if marked.insert(root) {
75− let entry = self
76− .items
77− .get(&root)
78− .expect_throw("CachedSet::gc: should have root in cached set");
79−
80− // NB: no need to recurse here because `edges` already contains
81− // transitive edges!
82− marked.extend(entry.edges.iter().cloned());
83− }
84− }
85−
86− self.items.retain(|id, entry| {
87− let keep = entry.pinned || marked.contains(id);
88− if !keep {
89− let node: &Node = unsafe { &*entry.node };
90− registry.remove_subtree(node);
91− }
92− keep
93− });
94− }
95−
96− // Trace all the transitive edges to other cached entries that the given
97− // node has.
98− fn trace(&self, node: &Node) -> FxHashSet<CacheId> {
99− let mut edges = FxHashSet::default();
100− self.trace_recursive(&mut edges, node);
101− edges
102− }
103−
104− fn trace_recursive(&self, edges: &mut FxHashSet<CacheId>, node: &Node) {
105− match &node.kind {
106− NodeKind::Text(_) => return,
107− NodeKind::Cached(c) => {
108− debug_assert!(self.items.contains_key(&c.id));
109− edges.insert(c.id);
110− edges.extend(
111− self.items
112− .get(&c.id)
113− .expect_throw("CachedSet::trace: should have c.id in cached set")
114− .edges
115− .iter()
116− .cloned(),
117− );
118− }
119− NodeKind::Element(el) => {
120− for child in el.children {
121− self.trace_recursive(edges, child);
122− }
123− }
124− }
125− }
126−
127− fn next_id(&mut self) -> CacheId {
128− let next = ID_COUNTER.fetch_add(1, Ordering::AcqRel) as u32;
129− let next = if next == u32::MAX { None } else { Some(next) };
130− CacheId(next.expect_throw("ID_COUNTER overflowed"))
131− }
132−
133− pub(crate) fn insert<F>(
134− cx: &mut RenderContext,
135− pinned: bool,
136− template: Option<CacheId>,
137− f: F,
138− ) -> CacheId
139− where
140− F: for<'a> FnOnce(&mut RenderContext<'a>) -> Node<'a>,
141− {
142− let set = cx.cached_set;
143− let bump = Bump::new();
144− let (node, edges) = {
145− let mut nested_cx = RenderContext::new(&bump, cx.cached_set, cx.templates);
146− let node = f(&mut nested_cx);
147− let node = bump.alloc(node);
148− let edges = {
149− let set = set.borrow();
150− set.trace(node)
151− };
152− (
153− node as *mut Node<'_> as usize as *const Node<'static>,
154− edges,
155− )
156− };
157−
158− let entry = CacheEntry {
159− bump,
160− node,
161− edges,
162− template,
163− pinned,
164− };
165−
166− let mut set = set.borrow_mut();
167− let id = set.next_id();
168− set.items.insert(id, entry);
169− id
170− }
171−
172− /// Does the cached set contain a cached node with the given id?
173− pub fn contains(&self, id: CacheId) -> bool {
174− self.items.contains_key(&id)
175− }
176−
177− /// Get the cached node and its template (if any) for the given cache id.
178− pub fn get(&self, id: CacheId) -> (&Node, Option<CacheId>) {
179− let entry = self
180− .items
181− .get(&id)
182− .expect_throw("CachedSet::get: should have id in set");
183− let node: &Node = unsafe { &*entry.node };
184− (node, entry.template)
185− }
186−}
src/change_list.rsnew file+480
@@ -0,0 +1,480 @@
1+use crate::Listener;
2+use bumpalo::Bump;
3+use fxhash::FxHashMap;
4+use std::fmt;
5+
6+pub mod js {
7+ cfg_if::cfg_if! {
8+ if #[cfg(feature = "xxx-unstable-internal-use-only")] {
9+ #[derive(Clone, Debug)]
10+ pub struct ChangeList {}
11+ impl ChangeList {
12+ pub fn new(_container: &crate::Element) -> ChangeList {
13+ ChangeList {}
14+ }
15+ pub fn unmount(&self) {}
16+ pub fn add_change_list_range(&self, _start: usize, _len: usize) {}
17+ pub fn init_events_trampoline(&self, _trampoline: &crate::EventsTrampoline) {}
18+ }
19+
20+ pub fn eval_change_list() {}
21+ } else {
22+ use wasm_bindgen::prelude::*;
23+
24+ #[wasm_bindgen]
25+ extern "C" {
26+ #[derive(Clone, Debug)]
27+ pub type ChangeList;
28+
29+ #[wasm_bindgen(constructor)]
30+ pub fn new(container: &web_sys::Element) -> ChangeList;
31+
32+ #[wasm_bindgen(structural, method)]
33+ pub fn unmount(this: &ChangeList);
34+
35+ #[wasm_bindgen(structural, method, js_name = addChangeListRange)]
36+ pub fn add_change_list_range(this: &ChangeList, start: usize, len: usize);
37+
38+ #[wasm_bindgen(structural, method, js_name = applyChanges)]
39+ pub fn apply_changes(this: &ChangeList, memory: JsValue);
40+
41+ #[wasm_bindgen(structural, method, js_name = initEventsTrampoline)]
42+ pub fn init_events_trampoline(
43+ this: &ChangeList,
44+ trampoline: &crate::EventsTrampoline,
45+ );
46+ }
47+
48+ pub fn eval_change_list() {
49+ use std::sync::Once;
50+ // XXX: Because wasm-bindgen-test doesn't support third party JS
51+ // dependencies, we can't use `wasm_bindgen(module = "...")` for our
52+ // `ChangeList` JS import. Instead, this *should* be a local JS snippet,
53+ // but that isn't implemented yet:
54+ // https://github.com/rustwasm/rfcs/pull/6
55+ static EVAL: Once = Once::new();
56+ EVAL.call_once(|| {
57+ js_sys::eval(include_str!("../js/change-list.js"))
58+ .expect_throw("should eval change-list.js OK");
59+ });
60+ }
61+ }
62+ }
63+}
64+
65+struct StringsCacheEntry {
66+ key: u32,
67+ used: bool,
68+}
69+
70+pub(crate) struct ChangeList {
71+ bump: Bump,
72+ strings_cache: FxHashMap<String, StringsCacheEntry>,
73+ next_string_key: u32,
74+ js: js::ChangeList,
75+ events_trampoline: Option<crate::EventsTrampoline>,
76+}
77+
78+impl Drop for ChangeList {
79+ fn drop(&mut self) {
80+ debug!("Dropping ChangeList");
81+ self.js.unmount();
82+ }
83+}
84+
85+impl fmt::Debug for ChangeList {
86+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
87+ f.debug_struct("ChangeList")
88+ .field("bump", &self.bump)
89+ .field("js", &self.js)
90+ .field("events_trampoline", &"..")
91+ .finish()
92+ }
93+}
94+
95+impl ChangeList {
96+ pub(crate) fn new(container: &crate::Element) -> ChangeList {
97+ js::eval_change_list();
98+ let bump = Bump::new();
99+ let strings_cache = FxHashMap::default();
100+ let js = js::ChangeList::new(container);
101+ ChangeList {
102+ bump,
103+ strings_cache,
104+ next_string_key: 0,
105+ js,
106+ events_trampoline: None,
107+ }
108+ }
109+
110+ #[cfg(feature = "xxx-unstable-internal-use-only")]
111+ pub(crate) fn apply_changes(&mut self) {
112+ // Do nothing...
113+ }
114+
115+ #[cfg(not(feature = "xxx-unstable-internal-use-only"))]
116+ pub(crate) fn apply_changes(&mut self) {
117+ let js = &self.js;
118+ unsafe {
119+ self.bump.each_allocated_chunk(|ch| {
120+ js.add_change_list_range(ch.as_ptr() as usize, ch.len());
121+ });
122+ }
123+ js.apply_changes(wasm_bindgen::memory());
124+ self.bump.reset();
125+ }
126+
127+ pub(crate) fn init_events_trampoline(&mut self, trampoline: crate::EventsTrampoline) {
128+ debug_assert!(self.events_trampoline.is_none());
129+ self.js.init_events_trampoline(&trampoline);
130+ self.events_trampoline = Some(trampoline);
131+ }
132+}
133+
134+#[repr(u32)]
135+#[derive(Clone, Copy, Debug)]
136+enum ChangeDiscriminant {
137+ /// Immediates: `(pointer, length)`
138+ ///
139+ /// Stack: `[... TextNode] -> [... TextNode]`
140+ ///
141+ /// ```text
142+ /// stack.top().textContent = String(pointer, length)
143+ /// ```
144+ SetText = 0,
145+
146+ /// Immediates: `()`
147+ ///
148+ /// Stack: `[... Node] -> [...]`
149+ ///
150+ /// ```text
151+ /// node = stack.pop()
152+ /// while (node.nextSibling) {
153+ /// node.nextSibling.remove();
154+ /// }
155+ /// node.remove()
156+ /// ```
157+ RemoveSelfAndNextSiblings = 1,
158+
159+ /// Immediates: `()`
160+ ///
161+ /// Stack: `[... Node Node] -> [... Node]`
162+ ///
163+ /// ```text
164+ /// new = stack.pop()
165+ /// old = stack.pop()
166+ /// old.replaceWith(new)
167+ /// stack.push(new)
168+ /// ```
169+ ReplaceWith = 2,
170+
171+ /// Immediates: `(id1, id2)`
172+ ///
173+ /// Stack: `[... Node] -> [... Node]`
174+ ///
175+ /// ```text
176+ /// stack.top().setAttribute(String(id1), String(id2))
177+ /// ```
178+ SetAttribute = 3,
179+
180+ /// Immediates: (id)
181+ ///
182+ /// Stack: `[... Node] -> [... Node]`
183+ ///
184+ /// ```text
185+ /// stack.top().removeAttribute(String(id))
186+ /// ```
187+ RemoveAttribute = 4,
188+
189+ /// Immediates: `()`
190+ ///
191+ /// Stack: `[... Node] -> [... Node node]`
192+ ///
193+ /// ```text
194+ /// stack.push(stack.top().firstChild)
195+ /// ```
196+ PushFirstChild = 5,
197+
198+ /// Immediates: `()`
199+ ///
200+ /// Stack: `[... Node] -> [... Node]`
201+ ///
202+ /// ```text
203+ /// stack.push(stack.pop().nextSibling)
204+ /// ```
205+ PopPushNextSibling = 6,
206+
207+ /// Immediates: `()`
208+ ///
209+ /// Stack: `[... T] -> [...]`
210+ ///
211+ /// ```text
212+ /// stack.pop()
213+ /// ```
214+ Pop = 7,
215+
216+ /// Immediates: `()`
217+ ///
218+ /// Stack: `[... Node Node] -> [... Node]`
219+ ///
220+ /// ```text
221+ /// child = stack.pop()
222+ /// stack.top().appendChild(child)
223+ /// ```
224+ AppendChild = 8,
225+
226+ /// Immediates: `(pointer, length)`
227+ ///
228+ /// Stack: `[...] -> [... Node]`
229+ ///
230+ /// ```text
231+ /// stack.push(createTextNode(String(pointer, length)))
232+ /// ```
233+ CreateTextNode = 9,
234+
235+ /// Immediates: `(id)`
236+ ///
237+ /// Stack: `[...] -> [... Node]`
238+ ///
239+ /// ```text
240+ /// stack.push(createElement(String(id))
241+ /// ```
242+ CreateElement = 10,
243+
244+ /// Immediates: `(id, A, B)`
245+ ///
246+ /// Stack: `[... Node] -> [... Node]`
247+ ///
248+ /// ```text
249+ /// event = String(id)
250+ /// callback = ProxyToRustCallback(A, B)
251+ /// stack.top().addEventListener(event, callback)
252+ /// ```
253+ NewEventListener = 11,
254+
255+ /// Immediates: `(id, A, B)`
256+ ///
257+ /// Stack: `[... Node] -> [... Node]`
258+ ///
259+ /// ```text
260+ /// event = String(id)
261+ /// new_callback = ProxyToRustCallback(A, B);
262+ /// stack.top().updateEventlistener(new_callback)
263+ /// ```
264+ UpdateEventListener = 12,
265+
266+ /// Immediates: `(id)`
267+ ///
268+ /// Stack: `[... Node] -> [... Node]`
269+ ///
270+ /// ```text
271+ /// stack.top().removeEventListener(String(id));
272+ /// ```
273+ RemoveEventListener = 13,
274+
275+ /// Immediates: `(pointer, length, id)`
276+ ///
277+ /// Stack: `[...] -> [...]`
278+ ///
279+ /// ```text
280+ /// addString(String(pointer, length), id);
281+ /// ```
282+ AddString = 14,
283+
284+ /// Immediates: `(id)`
285+ ///
286+ /// Stack: `[...] -> [...]`
287+ ///
288+ /// ```text
289+ /// dropString(id);
290+ /// ```
291+ DropString = 15,
292+
293+ /// Immediates: `(id1, id2)`
294+ ///
295+ /// Stack: `[...] -> [... Node]`
296+ ///
297+ /// ```text
298+ /// stack.push(createElementNS(String(id1), String(id2))
299+ /// ```
300+ CreateElementNS = 16,
301+
302+ /// Immediates: `(id1, id2, id3)`
303+ ///
304+ /// Stack: `[... Node] -> [... Node]`
305+ ///
306+ /// ```text
307+ /// stack.top().setAttributeNS(String(id1), String(id2), String(id3))
308+ /// ```
309+ SetAttributeNS = 17,
310+}
311+
312+// Allocation utilities to ensure that we only allocation sequences of `u32`s
313+// into the change list's bump arena without any padding. This helps maintain
314+// the invariants required for `Bump::each_allocated_chunk`'s safety.
315+impl ChangeList {
316+ // Allocate an opcode with zero immediates.
317+ fn op0(&self, discriminant: ChangeDiscriminant) {
318+ self.bump.alloc(discriminant as u32);
319+ }
320+
321+ // Allocate an opcode with one immediate.
322+ fn op1(&self, discriminant: ChangeDiscriminant, a: u32) {
323+ self.bump.alloc([discriminant as u32, a]);
324+ }
325+
326+ // Allocate an opcode with two immediates.
327+ fn op2(&self, discriminant: ChangeDiscriminant, a: u32, b: u32) {
328+ self.bump.alloc([discriminant as u32, a, b]);
329+ }
330+
331+ // Allocate an opcode with three immediates.
332+ fn op3(&self, discriminant: ChangeDiscriminant, a: u32, b: u32, c: u32) {
333+ self.bump.alloc([discriminant as u32, a, b, c]);
334+ }
335+
336+ // Note: no 4-immediate opcodes at this time.
337+}
338+
339+impl ChangeList {
340+ fn ensure_string(&mut self, string: &str) -> u32 {
341+ if let Some(entry) = self.strings_cache.get_mut(string) {
342+ entry.used = true;
343+ entry.key
344+ } else {
345+ let key = self.next_string_key;
346+ self.next_string_key += 1;
347+ let entry = StringsCacheEntry { key, used: true };
348+ self.strings_cache.insert(string.to_string(), entry);
349+ self.op3(
350+ ChangeDiscriminant::AddString,
351+ string.as_ptr() as u32,
352+ string.len() as u32,
353+ key,
354+ );
355+ key
356+ }
357+ }
358+
359+ pub(crate) fn drop_unused_strings(&mut self) {
360+ debug!("drop_unused_strings()");
361+ let mut new_cache = FxHashMap::default();
362+ for (key, val) in self.strings_cache.iter() {
363+ if val.used {
364+ new_cache.insert(
365+ key.clone(),
366+ StringsCacheEntry {
367+ key: val.key,
368+ used: false,
369+ },
370+ );
371+ } else {
372+ self.op1(ChangeDiscriminant::DropString, val.key);
373+ }
374+ }
375+ self.strings_cache = new_cache;
376+ }
377+
378+ pub(crate) fn emit_set_text(&self, text: &str) {
379+ debug!("emit_set_text({:?})", text);
380+ self.op2(
381+ ChangeDiscriminant::SetText,
382+ text.as_ptr() as u32,
383+ text.len() as u32,
384+ );
385+ }
386+
387+ pub(crate) fn emit_remove_self_and_next_siblings(&self) {
388+ debug!("emit_remove_self_and_next_siblings()");
389+ self.op0(ChangeDiscriminant::RemoveSelfAndNextSiblings);
390+ }
391+
392+ pub(crate) fn emit_replace_with(&self) {
393+ debug!("emit_replace_with()");
394+ self.op0(ChangeDiscriminant::ReplaceWith);
395+ }
396+
397+ pub(crate) fn emit_set_attribute(&mut self, name: &str, value: &str) {
398+ debug!("emit_set_attribute({:?}, {:?})", name, value);
399+ let name_id = self.ensure_string(name);
400+ let value_id = self.ensure_string(value);
401+ self.op2(ChangeDiscriminant::SetAttribute, name_id, value_id);
402+ }
403+
404+ pub(crate) fn emit_set_attribute_ns(&mut self, name: &str, value: &str) {
405+ debug!("emit_set_attribute_ns({:?}, {:?}", name, value);
406+ let name_id = self.ensure_string(name);
407+ let value_id = self.ensure_string(value);
408+ self.op2(ChangeDiscriminant::SetAttributeNS, name_id, value_id);
409+ }
410+
411+ pub(crate) fn emit_remove_attribute(&mut self, name: &str) {
412+ debug!("emit_remove_attribute({:?})", name);
413+ let name_id = self.ensure_string(name);
414+ self.op1(ChangeDiscriminant::RemoveAttribute, name_id);
415+ }
416+
417+ pub(crate) fn emit_push_first_child(&self) {
418+ debug!("emit_push_first_child()");
419+ self.op0(ChangeDiscriminant::PushFirstChild);
420+ }
421+
422+ pub(crate) fn emit_pop_push_next_sibling(&self) {
423+ debug!("emit_pop_push_next_sibling()");
424+ self.op0(ChangeDiscriminant::PopPushNextSibling);
425+ }
426+
427+ pub(crate) fn emit_pop(&self) {
428+ debug!("emit_pop()");
429+ self.op0(ChangeDiscriminant::Pop);
430+ }
431+
432+ pub(crate) fn emit_append_child(&self) {
433+ debug!("emit_append_child()");
434+ self.op0(ChangeDiscriminant::AppendChild);
435+ }
436+
437+ pub(crate) fn emit_create_text_node(&self, text: &str) {
438+ debug!("emit_create_text_node({:?})", text);
439+ self.op2(
440+ ChangeDiscriminant::CreateTextNode,
441+ text.as_ptr() as u32,
442+ text.len() as u32,
443+ );
444+ }
445+
446+ pub(crate) fn emit_create_element(&mut self, tag_name: &str) {
447+ debug!("emit_create_element({:?})", tag_name);
448+ let tag_name_id = self.ensure_string(tag_name);
449+ self.op1(ChangeDiscriminant::CreateElement, tag_name_id);
450+ }
451+
452+ pub(crate) fn emit_create_element_ns(&mut self, tag_name: &str, ns: &str) {
453+ debug!("emit_create_element_ns({:?}, {:?})", tag_name, ns);
454+ let tag_name_id = self.ensure_string(tag_name);
455+ let ns_id = self.ensure_string(ns);
456+ self.op2(ChangeDiscriminant::CreateElementNS, tag_name_id, ns_id);
457+ }
458+
459+ pub(crate) fn emit_new_event_listener(&mut self, listener: &Listener) {
460+ debug!("emit_new_event_listener({:?})", listener);
461+ let (a, b) = listener.get_callback_parts();
462+ debug_assert!(a != 0);
463+ let event_id = self.ensure_string(listener.event);
464+ self.op3(ChangeDiscriminant::NewEventListener, event_id, a, b);
465+ }
466+
467+ pub(crate) fn emit_update_event_listener(&mut self, listener: &Listener) {
468+ debug!("emit_update_event_listener({:?})", listener);
469+ let (a, b) = listener.get_callback_parts();
470+ debug_assert!(a != 0);
471+ let event_id = self.ensure_string(listener.event);
472+ self.op3(ChangeDiscriminant::UpdateEventListener, event_id, a, b);
473+ }
474+
475+ pub(crate) fn emit_remove_event_listener(&mut self, event: &str) {
476+ debug!("emit_remove_event_listener({:?})", event);
477+ let event_id = self.ensure_string(event);
478+ self.op1(ChangeDiscriminant::RemoveEventListener, event_id);
479+ }
480+}
src/change_list/emitter.rsdeleted−292
@@ -1,292 +0,0 @@
1−//! The `InstructionEmitter` is responsible for encoding change list
2−//! instructions and ensuring that each instruction has the correct number of
3−//! immediates. It ensures that the resulting change list instruction stream is
4−//! *syntactically* correct (opcodes have the correct arity of immediate
5−//! arguments, etc), while `ChangeListBuilder` wraps an emitter and additionally
6−//! ensures that the resulting change list program is *semantically* correct
7−//! (doesn't reference cached strings before they've been added to the cache,
8−//! etc).
9−//!
10−//! We encode the instructions directly into a dedicated bump arena. We
11−//! eventually pass the bump arena's chunks to the interpreter in JS, so it is
12−//! critical that nothing other than change list instructions are allocated
13−//! inside this bump, and that the instructions themselves do not contain any
14−//! padding or uninitialized memory. See the documentation for the the
15−//! `Bump::each_allocated_chunk` method for details.
16−
17−use bumpalo::Bump;
18−
19−#[derive(Debug)]
20−pub(crate) struct InstructionEmitter {
21− bump: Bump,
22−}
23−
24−impl InstructionEmitter {
25− /// Construct a new `InstructionEmitter` with its own bump arena.
26− pub fn new() -> InstructionEmitter {
27− let bump = Bump::new();
28− InstructionEmitter { bump }
29− }
30−
31− /// Invoke the given function with each of the allocated instruction
32− /// sequences that this emitter has built up.
33− #[cfg_attr(feature = "xxx-unstable-internal-use-only", allow(dead_code))]
34− pub fn each_instruction_sequence<F>(&mut self, f: F)
35− where
36− F: FnMut(&[u8]),
37− {
38− // Note: the safety invariants required for `each_allocated_chunk` are
39− // maintained by the fact that everything we encode as allocations in
40− // the bump arena are in the form of `u32`s, and therefore we don't have
41− // any uninitialized memory padding in the arena.
42− unsafe {
43− self.bump.each_allocated_chunk(f);
44− }
45− }
46−
47− /// Reset to an empty sequence of instructions.
48− pub fn reset(&mut self) {
49− self.bump.reset();
50− }
51−}
52−
53−macro_rules! define_change_list_instructions {
54− ( $(
55− $( #[$attr:meta] )*
56− $name:ident (
57− $($immediate:ident),*
58− ) = $discriminant:expr,
59− )* ) => {
60− impl InstructionEmitter {
61− $(
62− $( #[$attr] )*
63− #[inline]
64− pub fn $name(&self $(, $immediate: u32)*) {
65− self.bump.alloc_with(|| [$discriminant $(, $immediate )* ]);
66− }
67− )*
68− }
69− }
70−}
71−
72−define_change_list_instructions! {
73− /// Stack: `[... TextNode] -> [... TextNode]`
74− ///
75− /// ```text
76− /// stack.top().textContent = readString(pointer, length)
77− /// ```
78− set_text(pointer, length) = 0,
79−
80− /// Stack: `[... Node] -> [...]`
81− ///
82− /// ```text
83− /// node = stack.pop()
84− /// while (node.nextSibling) {
85− /// node.nextSibling.remove();
86− /// }
87− /// node.remove()
88− /// ```
89− remove_self_and_next_siblings() = 1,
90−
91− /// Stack: `[... Node Node] -> [... Node]`
92− ///
93− /// ```text
94− /// new = stack.pop()
95− /// old = stack.pop()
96− /// old.replaceWith(new)
97− /// stack.push(new)
98− /// ```
99− replace_with() = 2,
100−
101− /// Stack: `[... Node] -> [... Node]`
102− ///
103− /// ```text
104− /// stack.top().setAttribute(getCachedString(attribute_key), getCachedString(value_key))
105− /// ```
106− set_attribute(attribute_key, value_key) = 3,
107−
108− /// Stack: `[... Node] -> [... Node]`
109− ///
110− /// ```text
111− /// stack.top().removeAttribute(getCachedString(attribute_key))
112− /// ```
113− remove_attribute(attribute_key) = 4,
114−
115− /// Stack: `[... Node] -> [... Node Node]`
116− ///
117− /// ```text
118− /// parent = stack.top()
119− /// child = parent.childNodes[parent.childNodes.length - n - 1]
120− /// stack.push(child)
121− /// ```
122− push_reverse_child(n) = 5,
123−
124− /// Stack: `[... Node Node] -> [... Node Node]`
125− ///
126− /// ```text
127− /// stack.pop();
128− /// parent = stack.top();
129− /// child = parent.childNodes[n]
130− /// stack.push(child)
131− /// ```
132− pop_push_child(n) = 6,
133−
134− /// Stack: `[... T] -> [...]`
135− ///
136− /// ```text
137− /// stack.pop()
138− /// ```
139− pop() = 7,
140−
141− /// Stack: `[... Node Node] -> [... Node]`
142− ///
143− /// ```text
144− /// child = stack.pop()
145− /// stack.top().appendChild(child)
146− /// ```
147− append_child() = 8,
148−
149− /// Stack: `[...] -> [... Node]`
150− ///
151− /// ```text
152− /// stack.push(document.createTextNode(readString(pointer, length)))
153− /// ```
154− create_text_node(pointer, length) = 9,
155−
156− /// Stack: `[...] -> [... Node]`
157− ///
158− /// ```text
159− /// stack.push(document.createElement(getCachedString(tag_name_key))
160− /// ```
161− create_element(tag_name_key) = 10,
162−
163− /// Stack: `[... Node] -> [... Node]`
164− ///
165− /// ```text
166− /// event = getCachedString(event_key)
167− /// callback = createProxyToRustCallback(a, b)
168− /// stack.top().addEventListener(event, callback)
169− /// ```
170− new_event_listener(event_key, a, b) = 11,
171−
172− /// Stack: `[... Node] -> [... Node]`
173− ///
174− /// ```text
175− /// event = getCachedString(event_key)
176− /// new_callback = createProxyToRustCallback(a, b);
177− /// stack.top().updateEventlistener(new_callback)
178− /// ```
179− update_event_listener(event_key, a, b) = 12,
180−
181− /// Stack: `[... Node] -> [... Node]`
182− ///
183− /// ```text
184− /// stack.top().removeEventListener(getCachedString(event_key));
185− /// ```
186− remove_event_listener(event_key) = 13,
187−
188− /// Stack: `[...] -> [...]`
189− ///
190− /// ```text
191− /// addCachedString(readString(pointer, length), key);
192− /// ```
193− add_cached_string(pointer, length, key) = 14,
194−
195− /// Stack: `[...] -> [...]`
196− ///
197− /// ```text
198− /// dropCachedString(key);
199− /// ```
200− drop_cached_string(key) = 15,
201−
202− /// Stack: `[...] -> [... Node]`
203− ///
204− /// ```text
205− /// tag_name = getCachedString(tag_name_key)
206− /// namespace = getCachedString(tag_name_key)
207− /// stack.push(document.createElementNS(tag_name, namespace))
208− /// ```
209− create_element_ns(tag_name_key, namespace_key) = 16,
210−
211− /// Stack: `[...] -> [...]`
212− ///
213− /// ```text
214− /// parent = stack.top()
215− /// children = parent.childNodes
216− /// temp = temp_base
217− /// for i in start .. end:
218− /// temporaries[temp] = children[i]
219− /// temp += 1
220− /// ```
221− save_children_to_temporaries(temp_base, start, end) = 17,
222−
223− /// Stack: `[... Node] -> [... Node Node]`
224− ///
225− /// ```text
226− /// parent = stack.top()
227− /// child = parent.childNodes[n]
228− /// stack.push(child)
229− /// ```
230− push_child(n) = 18,
231−
232− /// Stack: `[...] -> [... Node]`
233− ///
234− /// ```text
235− /// stack.push(temporaries[temp])
236− /// ```
237− push_temporary(temp) = 19,
238−
239− /// Stack: `[... Node Node] -> [... Node]`
240− ///
241− /// ```text
242− /// before = stack.pop()
243− /// after = stack.pop()
244− /// after.insertBefore(before)
245− /// stack.push(before)
246− /// ```
247− insert_before() = 20,
248−
249− /// Stack: `[... Node Node] -> [... Node Node]`
250− ///
251− /// ```text
252− /// stack.pop()
253− /// parent = stack.top()
254− /// child = parent.childNodes[parent.childNodes.length - n - 1]
255− /// stack.push(child)
256− /// ```
257− pop_push_reverse_child(n) = 21,
258−
259− /// Stack: `[... Node] -> [... Node]`
260− ///
261− /// ```text
262− /// parent = stack.top()
263− /// child = parent.childNodes[n]
264− /// child.remove()
265− /// ```
266− remove_child(n) = 22,
267−
268− /// Stack: `[... Node] -> [... Node]`
269− ///
270− /// ```text
271− /// class = getCachedString(class)
272− /// node = stack.top()
273− /// node.className = class
274− /// ```
275− set_class(class) = 23,
276−
277− /// Stack: `[... Node] -> [... Node]`
278− ///
279− /// ```text
280− /// template = stack.top()
281− /// saveTemplate(id, template)
282− /// ```
283− save_template(id) = 24,
284−
285− /// Stack: `[...] -> [... Node]`
286− ///
287− /// ```text
288− /// template = getTemplate(id)
289− /// stack.push(template.cloneNode(true))
290− /// ```
291− push_template(id) = 25,
292−}
src/change_list/js.rsdeleted−40
@@ -1,40 +0,0 @@
1−cfg_if::cfg_if! {
2− if #[cfg(all(feature = "xxx-unstable-internal-use-only", not(target_arch = "wasm32")))] {
3− #[derive(Clone, Debug)]
4− pub struct ChangeListInterpreter {}
5− impl ChangeListInterpreter {
6− pub fn new(_container: &crate::Element) -> ChangeListInterpreter {
7− ChangeListInterpreter {}
8− }
9− pub fn unmount(&self) {}
10− pub fn add_change_list_range(&self, _start: usize, _len: usize) {}
11− pub fn init_events_trampoline(&self, _trampoline: &crate::EventsTrampoline) {}
12− }
13− } else {
14− use wasm_bindgen::prelude::*;
15−
16− #[wasm_bindgen(module = "/js/change-list-interpreter.js")]
17− extern "C" {
18− #[derive(Clone, Debug)]
19− pub type ChangeListInterpreter;
20−
21− #[wasm_bindgen(constructor)]
22− pub fn new(container: &web_sys::Element) -> ChangeListInterpreter;
23−
24− #[wasm_bindgen(structural, method)]
25− pub fn unmount(this: &ChangeListInterpreter);
26−
27− #[wasm_bindgen(structural, method, js_name = addChangeListRange)]
28− pub fn add_change_list_range(this: &ChangeListInterpreter, start: usize, len: usize);
29−
30− #[wasm_bindgen(structural, method, js_name = applyChanges)]
31− pub fn apply_changes(this: &ChangeListInterpreter, memory: JsValue);
32−
33− #[wasm_bindgen(structural, method, js_name = initEventsTrampoline)]
34− pub fn init_events_trampoline(
35− this: &ChangeListInterpreter,
36− trampoline: &crate::EventsTrampoline,
37− );
38− }
39− }
40−}
src/change_list/mod.rsdeleted−353
@@ -1,353 +0,0 @@
1−pub(crate) mod emitter;
2−pub(crate) mod strings;
3−pub(crate) mod traversal;
4−
5−// Note: has to be `pub` because of `wasm-bindgen` visibility restrictions.
6−pub mod js;
7−
8−use self::emitter::InstructionEmitter;
9−use self::strings::{StringKey, StringsCache};
10−use self::traversal::{MoveTo, Traversal};
11−use crate::{cached_set::CacheId, Listener};
12−use fxhash::FxHashSet;
13−
14−#[derive(Debug)]
15−pub(crate) struct ChangeListPersistentState {
16− strings: StringsCache,
17− emitter: InstructionEmitter,
18− traversal: Traversal,
19− interpreter: js::ChangeListInterpreter,
20− templates: FxHashSet<CacheId>,
21−}
22−
23−pub(crate) struct ChangeListBuilder<'a> {
24− state: &'a mut ChangeListPersistentState,
25− next_temporary: u32,
26− forcing_new_listeners: bool,
27−}
28−
29−impl Drop for ChangeListPersistentState {
30− fn drop(&mut self) {
31− self.interpreter.unmount();
32− }
33−}
34−
35−impl ChangeListPersistentState {
36− pub(crate) fn new(container: &crate::Element) -> ChangeListPersistentState {
37− let strings = StringsCache::new();
38− let emitter = InstructionEmitter::new();
39− let traversal = Traversal::new();
40− let interpreter = js::ChangeListInterpreter::new(container);
41− let templates = Default::default();
42− ChangeListPersistentState {
43− strings,
44− emitter,
45− traversal,
46− interpreter,
47− templates,
48− }
49− }
50−
51− pub(crate) fn init_events_trampoline(&mut self, trampoline: &crate::EventsTrampoline) {
52− self.interpreter.init_events_trampoline(trampoline);
53− }
54−
55− pub(crate) fn builder<'a>(&'a mut self) -> ChangeListBuilder<'a> {
56− ChangeListBuilder {
57− state: self,
58− next_temporary: 0,
59− forcing_new_listeners: false,
60− }
61− }
62−}
63−
64−cfg_if::cfg_if! {
65− if #[cfg(all(feature = "xxx-unstable-internal-use-only", not(target_arch = "wasm32")))] {
66− impl ChangeListBuilder<'_> {
67− pub(crate) fn finish(self) {
68− self.state.strings.drop_unused_strings(&self.state.emitter);
69−
70− // Nothing to actually apply the changes to.
71−
72− self.state.emitter.reset();
73− self.state.traversal.reset();
74− }
75− }
76− } else {
77− impl ChangeListBuilder<'_> {
78− pub(crate) fn finish(self) {
79− self.state.strings.drop_unused_strings(&self.state.emitter);
80−
81− // Apply the changes.
82− let interpreter = &self.state.interpreter;
83− self.state.emitter.each_instruction_sequence(|seq| {
84− interpreter.add_change_list_range(seq.as_ptr() as usize, seq.len());
85− });
86− interpreter.apply_changes(wasm_bindgen::memory());
87−
88− self.state.emitter.reset();
89− self.state.traversal.reset();
90− }
91− }
92− }
93−}
94−
95−/// Traversal methods.
96−impl ChangeListBuilder<'_> {
97− pub fn go_down(&mut self) {
98− self.state.traversal.down();
99− }
100−
101− pub fn go_down_to_child(&mut self, index: usize) {
102− self.state.traversal.down();
103− self.state.traversal.sibling(index);
104− }
105−
106− pub fn go_down_to_reverse_child(&mut self, index: usize) {
107− self.state.traversal.down();
108− self.state.traversal.reverse_sibling(index);
109− }
110−
111− pub fn go_up(&mut self) {
112− self.state.traversal.up();
113− }
114−
115− pub fn go_to_sibling(&mut self, index: usize) {
116− self.state.traversal.sibling(index);
117− }
118−
119− pub fn go_to_temp_sibling(&mut self, temp: u32) {
120− self.state.traversal.up();
121− self.state.traversal.down_to_temp(temp);
122− }
123−
124− pub fn go_down_to_temp_child(&mut self, temp: u32) {
125− self.state.traversal.down_to_temp(temp);
126− }
127−
128− pub fn commit_traversal(&mut self) {
129− if self.state.traversal.is_committed() {
130− return;
131− }
132−
133− for mv in self.state.traversal.commit() {
134− match mv {
135− MoveTo::Parent => {
136− debug!("emit: pop");
137− self.state.emitter.pop();
138− }
139− MoveTo::Child(n) => {
140− debug!("emit: push_child({})", n);
141− self.state.emitter.push_child(n);
142− }
143− MoveTo::ReverseChild(n) => {
144− debug!("emit: push_reverse_child({})", n);
145− self.state.emitter.push_reverse_child(n);
146− }
147− MoveTo::Sibling(n) => {
148− debug!("emit: pop_push_child({})", n);
149− self.state.emitter.pop_push_child(n);
150− }
151− MoveTo::ReverseSibling(n) => {
152− debug!("emit: pop_push_reverse_child({})", n);
153− self.state.emitter.pop_push_reverse_child(n);
154− }
155− MoveTo::TempChild(temp) => {
156− debug!("emit: push_temporary({})", temp);
157− self.state.emitter.push_temporary(temp);
158− }
159− }
160− }
161− }
162−
163− pub fn traversal_is_committed(&self) -> bool {
164− self.state.traversal.is_committed()
165− }
166−}
167−
168−impl ChangeListBuilder<'_> {
169− pub fn next_temporary(&self) -> u32 {
170− self.next_temporary
171− }
172−
173− pub fn set_next_temporary(&mut self, next_temporary: u32) {
174− self.next_temporary = next_temporary;
175− }
176−
177− pub fn save_children_to_temporaries(&mut self, start: usize, end: usize) -> u32 {
178− debug_assert!(self.traversal_is_committed());
179− debug_assert!(start < end);
180− let temp_base = self.next_temporary;
181− debug!(
182− "emit: save_children_to_temporaries({}, {}, {})",
183− temp_base, start, end
184− );
185− self.next_temporary = temp_base + (end - start) as u32;
186− self.state
187− .emitter
188− .save_children_to_temporaries(temp_base, start as u32, end as u32);
189− temp_base
190− }
191−
192− pub fn push_temporary(&self, temp: u32) {
193− debug_assert!(self.traversal_is_committed());
194− debug!("emit: push_temporary({})", temp);
195− self.state.emitter.push_temporary(temp);
196− }
197−
198− pub fn remove_child(&self, child: usize) {
199− debug_assert!(self.traversal_is_committed());
200− debug!("emit: remove_child({})", child);
201− self.state.emitter.remove_child(child as u32);
202− }
203−
204− pub fn insert_before(&self) {
205− debug_assert!(self.traversal_is_committed());
206− debug!("emit: insert_before()");
207− self.state.emitter.insert_before();
208− }
209−
210− pub fn ensure_string(&mut self, string: &str) -> StringKey {
211− self.state
212− .strings
213− .ensure_string(string, &self.state.emitter)
214− }
215−
216− pub fn set_text(&self, text: &str) {
217− debug_assert!(self.traversal_is_committed());
218− debug!("emit: set_text({:?})", text);
219− self.state
220− .emitter
221− .set_text(text.as_ptr() as u32, text.len() as u32);
222− }
223−
224− pub fn remove_self_and_next_siblings(&self) {
225− debug_assert!(self.traversal_is_committed());
226− debug!("emit: remove_self_and_next_siblings()");
227− self.state.emitter.remove_self_and_next_siblings();
228− }
229−
230− pub fn replace_with(&self) {
231− debug_assert!(self.traversal_is_committed());
232− debug!("emit: replace_with()");
233− self.state.emitter.replace_with();
234− }
235−
236− pub fn set_attribute(&mut self, name: &str, value: &str, is_namespaced: bool) {
237− debug_assert!(self.traversal_is_committed());
238− if name == "class" && !is_namespaced {
239− let class_id = self.ensure_string(value);
240− debug!("emit: set_class({:?})", value);
241− self.state.emitter.set_class(class_id.into());
242− } else {
243− let name_id = self.ensure_string(name);
244− let value_id = self.ensure_string(value);
245− debug!("emit: set_attribute({:?}, {:?})", name, value);
246− self.state
247− .emitter
248− .set_attribute(name_id.into(), value_id.into());
249− }
250− }
251−
252− pub fn remove_attribute(&mut self, name: &str) {
253− debug_assert!(self.traversal_is_committed());
254− debug!("emit: remove_attribute({:?})", name);
255− let name_id = self.ensure_string(name);
256− self.state.emitter.remove_attribute(name_id.into());
257− }
258−
259− pub fn append_child(&self) {
260− debug_assert!(self.traversal_is_committed());
261− debug!("emit: append_child()");
262− self.state.emitter.append_child();
263− }
264−
265− pub fn create_text_node(&self, text: &str) {
266− debug_assert!(self.traversal_is_committed());
267− debug!("emit: create_text_node({:?})", text);
268− self.state
269− .emitter
270− .create_text_node(text.as_ptr() as u32, text.len() as u32);
271− }
272−
273− pub fn create_element(&mut self, tag_name: &str) {
274− debug_assert!(self.traversal_is_committed());
275− debug!("emit: create_element({:?})", tag_name);
276− let tag_name_id = self.ensure_string(tag_name);
277− self.state.emitter.create_element(tag_name_id.into());
278− }
279−
280− pub fn create_element_ns(&mut self, tag_name: &str, ns: &str) {
281− debug_assert!(self.traversal_is_committed());
282− debug!("emit: create_element_ns({:?}, {:?})", tag_name, ns);
283− let tag_name_id = self.ensure_string(tag_name);
284− let ns_id = self.ensure_string(ns);
285− self.state
286− .emitter
287− .create_element_ns(tag_name_id.into(), ns_id.into());
288− }
289−
290− pub fn push_force_new_listeners(&mut self) -> bool {
291− let old = self.forcing_new_listeners;
292− self.forcing_new_listeners = true;
293− old
294− }
295−
296− pub fn pop_force_new_listeners(&mut self, previous: bool) {
297− debug_assert!(self.forcing_new_listeners);
298− self.forcing_new_listeners = previous;
299− }
300−
301− pub fn new_event_listener(&mut self, listener: &Listener) {
302− debug_assert!(self.traversal_is_committed());
303− debug!("emit: new_event_listener({:?})", listener);
304− let (a, b) = listener.get_callback_parts();
305− debug_assert!(a != 0);
306− let event_id = self.ensure_string(listener.event);
307− self.state.emitter.new_event_listener(event_id.into(), a, b);
308− }
309−
310− pub fn update_event_listener(&mut self, listener: &Listener) {
311− debug_assert!(self.traversal_is_committed());
312−
313− if self.forcing_new_listeners {
314− self.new_event_listener(listener);
315− return;
316− }
317−
318− debug!("emit: update_event_listener({:?})", listener);
319− let (a, b) = listener.get_callback_parts();
320− debug_assert!(a != 0);
321− let event_id = self.ensure_string(listener.event);
322− self.state
323− .emitter
324− .update_event_listener(event_id.into(), a, b);
325− }
326−
327− pub fn remove_event_listener(&mut self, event: &str) {
328− debug_assert!(self.traversal_is_committed());
329− debug!("emit: remove_event_listener({:?})", event);
330− let event_id = self.ensure_string(event);
331− self.state.emitter.remove_event_listener(event_id.into());
332− }
333−
334− #[inline]
335− pub fn has_template(&mut self, id: CacheId) -> bool {
336− self.state.templates.contains(&id)
337− }
338−
339− pub fn save_template(&mut self, id: CacheId) {
340− debug_assert!(self.traversal_is_committed());
341− debug_assert!(!self.has_template(id));
342− debug!("emit: save_template({:?})", id);
343− self.state.templates.insert(id);
344− self.state.emitter.save_template(id.into());
345− }
346−
347− pub fn push_template(&mut self, id: CacheId) {
348− debug_assert!(self.traversal_is_committed());
349− debug_assert!(self.has_template(id));
350− debug!("emit: push_template({:?})", id);
351− self.state.emitter.push_template(id.into());
352− }
353−}
src/change_list/strings.rsdeleted−66
@@ -1,66 +0,0 @@
1−use crate::change_list::emitter::InstructionEmitter;
2−use fxhash::FxHashMap;
3−
4−#[derive(Clone, Copy, Debug, PartialEq, Eq)]
5−pub struct StringKey(u32);
6−
7−impl From<StringKey> for u32 {
8− #[inline]
9− fn from(key: StringKey) -> u32 {
10− key.0
11− }
12−}
13−
14−#[derive(Debug)]
15−struct StringsCacheEntry {
16− key: StringKey,
17− used: bool,
18−}
19−
20−#[derive(Debug, Default)]
21−pub(crate) struct StringsCache {
22− entries: FxHashMap<String, StringsCacheEntry>,
23− next_string_key: u32,
24−}
25−
26−impl StringsCache {
27− /// Create a new, empty strings cache.
28− pub fn new() -> StringsCache {
29− Default::default()
30− }
31−
32− /// Ensure that the given string is cached, and get its key.
33− pub fn ensure_string(&mut self, string: &str, emitter: &InstructionEmitter) -> StringKey {
34− if let Some(entry) = self.entries.get_mut(string) {
35− entry.used = true;
36− entry.key
37− } else {
38− let key = StringKey(self.next_string_key);
39− self.next_string_key += 1;
40− let entry = StringsCacheEntry { key, used: true };
41− self.entries.insert(string.to_string(), entry);
42− emitter.add_cached_string(string.as_ptr() as u32, string.len() as u32, key.into());
43− key
44− }
45− }
46−
47− pub fn drop_unused_strings(&mut self, emitter: &InstructionEmitter) {
48− self.entries.retain(|string, entry| {
49− if entry.used {
50− // Since this entry was used during while rendering this frame,
51− // it is likely going to be used for the next frame as well. So
52− // we keep it in the cache so that we don't have to repopulate
53− // and resync the cache next frame (assuming it is reused), but
54− // we set the `used` flag to false so that if it is not used
55− // next frame, it will be cleaned up.
56− entry.used = false;
57− true
58− } else {
59− let key = entry.key.into();
60− debug!("emit: drop_cached_string({}) = {:?}", key, string);
61− emitter.drop_cached_string(key);
62− false
63− }
64− });
65− }
66−}
src/change_list/traversal.rsdeleted−344
@@ -1,344 +0,0 @@
1−//! Keeps track of where we are moving in a DOM tree, and shortens traversal
2−//! paths between mutations to their minimal number of operations.
3−
4−#[derive(Clone, Copy, Debug, PartialEq, Eq)]
5−pub enum MoveTo {
6− /// Move from the current node up to its parent.
7− Parent,
8−
9− /// Move to the current node's n^th child.
10− Child(u32),
11−
12− /// Move to the current node's n^th from last child.
13− ReverseChild(u32),
14−
15− /// Move to the n^th sibling. Not relative from the current
16− /// location. Absolute indexed within all of the current siblings.
17− Sibling(u32),
18−
19− /// Move to the n^th from last sibling. Not relative from the current
20− /// location. Absolute indexed within all of the current siblings.
21− ReverseSibling(u32),
22−
23− /// Move down to the given saved temporary child.
24− TempChild(u32),
25−}
26−
27−#[derive(Debug)]
28−pub struct Traversal {
29− uncommitted: Vec<MoveTo>,
30−}
31−
32−impl Traversal {
33− /// Construct a new `Traversal` with its internal storage backed by the
34− /// given bump arena.
35− pub fn new() -> Traversal {
36− Traversal {
37− uncommitted: Vec::with_capacity(32),
38− }
39− }
40−
41− /// Move the traversal up in the tree.
42− pub fn up(&mut self) {
43− match self.uncommitted.last() {
44− Some(MoveTo::Sibling(_)) | Some(MoveTo::ReverseSibling(_)) => {
45− self.uncommitted.pop();
46− self.uncommitted.push(MoveTo::Parent);
47− }
48− Some(MoveTo::TempChild(_)) | Some(MoveTo::Child(_)) | Some(MoveTo::ReverseChild(_)) => {
49− self.uncommitted.pop();
50− // And we're back at the parent.
51− }
52− _ => {
53− self.uncommitted.push(MoveTo::Parent);
54− }
55− }
56− }
57−
58− /// Move the traversal down in the tree to the first child of the current
59− /// node.
60− pub fn down(&mut self) {
61− if let Some(&MoveTo::Parent) = self.uncommitted.last() {
62− self.uncommitted.pop();
63− self.sibling(0);
64− } else {
65− self.uncommitted.push(MoveTo::Child(0));
66− }
67− }
68−
69− /// Move the traversal to the n^th sibling.
70− pub fn sibling(&mut self, index: usize) {
71− let index = index as u32;
72− match self.uncommitted.last_mut() {
73− Some(MoveTo::Sibling(ref mut n)) | Some(MoveTo::Child(ref mut n)) => {
74− *n = index;
75− }
76− Some(MoveTo::ReverseSibling(_)) => {
77− self.uncommitted.pop();
78− self.uncommitted.push(MoveTo::Sibling(index));
79− }
80− Some(MoveTo::TempChild(_)) | Some(MoveTo::ReverseChild(_)) => {
81− self.uncommitted.pop();
82− self.uncommitted.push(MoveTo::Child(index))
83− }
84− _ => {
85− self.uncommitted.push(MoveTo::Sibling(index));
86− }
87− }
88− }
89−
90− /// Move the the n^th from last sibling.
91− pub fn reverse_sibling(&mut self, index: usize) {
92− let index = index as u32;
93− match self.uncommitted.last_mut() {
94− Some(MoveTo::ReverseSibling(ref mut n)) | Some(MoveTo::ReverseChild(ref mut n)) => {
95− *n = index;
96− }
97− Some(MoveTo::Sibling(_)) => {
98− self.uncommitted.pop();
99− self.uncommitted.push(MoveTo::ReverseSibling(index));
100− }
101− Some(MoveTo::TempChild(_)) | Some(MoveTo::Child(_)) => {
102− self.uncommitted.pop();
103− self.uncommitted.push(MoveTo::ReverseChild(index))
104− }
105− _ => {
106− self.uncommitted.push(MoveTo::ReverseSibling(index));
107− }
108− }
109− }
110−
111− /// Go to the given saved temporary.
112− pub fn down_to_temp(&mut self, temp: u32) {
113− match self.uncommitted.last() {
114− Some(MoveTo::Sibling(_)) | Some(MoveTo::ReverseSibling(_)) => {
115− self.uncommitted.pop();
116− }
117− Some(MoveTo::Parent)
118− | Some(MoveTo::TempChild(_))
119− | Some(MoveTo::Child(_))
120− | Some(MoveTo::ReverseChild(_))
121− | None => {
122− // Can't remove moves to parents since we rely on their stack
123− // pops.
124− }
125− }
126− self.uncommitted.push(MoveTo::TempChild(temp));
127− }
128−
129− /// Are all the traversal's moves committed? That is, are there no moves
130− /// that have *not* been committed yet?
131− #[inline]
132− pub fn is_committed(&self) -> bool {
133− self.uncommitted.is_empty()
134− }
135−
136− /// Commit this traversals moves and return the optimized path from the last
137− /// commit.
138− #[inline]
139− pub fn commit(&mut self) -> Moves {
140− Moves {
141− inner: self.uncommitted.drain(..),
142− }
143− }
144−
145− #[inline]
146− pub fn reset(&mut self) {
147− self.uncommitted.clear();
148− }
149−}
150−
151−pub struct Moves<'a> {
152− inner: std::vec::Drain<'a, MoveTo>,
153−}
154−
155−impl Iterator for Moves<'_> {
156− type Item = MoveTo;
157−
158− #[inline]
159− fn next(&mut self) -> Option<MoveTo> {
160− self.inner.next()
161− }
162−}
163−
164−#[cfg(test)]
165−mod tests {
166− use super::*;
167−
168− #[test]
169− fn test_traversal() {
170− fn t<F>(f: F) -> Box<dyn FnMut(&mut Traversal)>
171− where
172− F: 'static + FnMut(&mut Traversal),
173− {
174− Box::new(f) as _
175− }
176−
177− for (mut traverse, expected_moves) in vec![
178− (
179− t(|t| {
180− t.down();
181− }),
182− vec![MoveTo::Child(0)],
183− ),
184− (
185− t(|t| {
186− t.up();
187− }),
188− vec![MoveTo::Parent],
189− ),
190− (
191− t(|t| {
192− t.sibling(42);
193− }),
194− vec![MoveTo::Sibling(42)],
195− ),
196− (
197− t(|t| {
198− t.down();
199− t.up();
200− }),
201− vec![],
202− ),
203− (
204− t(|t| {
205− t.down();
206− t.sibling(2);
207− t.up();
208− }),
209− vec![],
210− ),
211− (
212− t(|t| {
213− t.down();
214− t.sibling(3);
215− }),
216− vec![MoveTo::Child(3)],
217− ),
218− (
219− t(|t| {
220− t.down();
221− t.sibling(4);
222− t.sibling(8);
223− }),
224− vec![MoveTo::Child(8)],
225− ),
226− (
227− t(|t| {
228− t.sibling(1);
229− t.sibling(1);
230− }),
231− vec![MoveTo::Sibling(1)],
232− ),
233− (
234− t(|t| {
235− t.reverse_sibling(3);
236− }),
237− vec![MoveTo::ReverseSibling(3)],
238− ),
239− (
240− t(|t| {
241− t.down();
242− t.reverse_sibling(3);
243− }),
244− vec![MoveTo::ReverseChild(3)],
245− ),
246− (
247− t(|t| {
248− t.down();
249− t.reverse_sibling(3);
250− t.up();
251− }),
252− vec![],
253− ),
254− (
255− t(|t| {
256− t.down();
257− t.reverse_sibling(3);
258− t.reverse_sibling(6);
259− }),
260− vec![MoveTo::ReverseChild(6)],
261− ),
262− (
263− t(|t| {
264− t.up();
265− t.reverse_sibling(3);
266− t.reverse_sibling(6);
267− }),
268− vec![MoveTo::Parent, MoveTo::ReverseSibling(6)],
269− ),
270− (
271− t(|t| {
272− t.up();
273− t.sibling(3);
274− t.sibling(6);
275− }),
276− vec![MoveTo::Parent, MoveTo::Sibling(6)],
277− ),
278− (
279− t(|t| {
280− t.sibling(3);
281− t.sibling(6);
282− t.up();
283− }),
284− vec![MoveTo::Parent],
285− ),
286− (
287− t(|t| {
288− t.reverse_sibling(3);
289− t.reverse_sibling(6);
290− t.up();
291− }),
292− vec![MoveTo::Parent],
293− ),
294− (
295− t(|t| {
296− t.down();
297− t.down_to_temp(3);
298− }),
299− vec![MoveTo::Child(0), MoveTo::TempChild(3)],
300− ),
301− (
302− t(|t| {
303− t.down_to_temp(3);
304− t.sibling(5);
305− }),
306− vec![MoveTo::Child(5)],
307− ),
308− (
309− t(|t| {
310− t.down_to_temp(3);
311− t.reverse_sibling(5);
312− }),
313− vec![MoveTo::ReverseChild(5)],
314− ),
315− (
316− t(|t| {
317− t.down_to_temp(3);
318− t.up();
319− }),
320− vec![],
321− ),
322− (
323− t(|t| {
324− t.sibling(2);
325− t.up();
326− t.down_to_temp(3);
327− }),
328− vec![MoveTo::Parent, MoveTo::TempChild(3)],
329− ),
330− (
331− t(|t| {
332− t.up();
333− t.down_to_temp(3);
334− }),
335− vec![MoveTo::Parent, MoveTo::TempChild(3)],
336− ),
337− ] {
338− let mut traversal = Traversal::new();
339− traverse(&mut traversal);
340− let actual_moves: Vec<_> = traversal.commit().collect();
341− assert_eq!(actual_moves, expected_moves);
342− }
343− }
344−}
src/diff.rsdeleted−1125
@@ -1,1125 +0,0 @@
1−use crate::{
2− cached_set::{CacheId, CachedSet},
3− change_list::ChangeListBuilder,
4− events::EventsRegistry,
5− node::{Attribute, ElementNode, Listener, Node, NodeKind, TextNode},
6−};
7−use fxhash::{FxHashMap, FxHashSet};
8−use std::cmp::Ordering;
9−use std::u32;
10−use wasm_bindgen::UnwrapThrowExt;
11−
12−// Diff the `old` node with the `new` node. Emits instructions to modify a
13−// physical DOM node that reflects `old` into something that reflects `new`.
14−//
15−// Upon entry to this function, the physical DOM node must be on the top of the
16−// change list stack:
17−//
18−// [... node]
19−//
20−// The change list stack is in the same state when this function exits.
21−pub(crate) fn diff(
22− cached_set: &CachedSet,
23− change_list: &mut ChangeListBuilder,
24− registry: &mut EventsRegistry,
25− old: &Node,
26− new: &Node,
27− cached_roots: &mut FxHashSet<CacheId>,
28−) {
29− match (&new.kind, &old.kind) {
30− (
31− &NodeKind::Text(TextNode { text: new_text }),
32− &NodeKind::Text(TextNode { text: old_text }),
33− ) => {
34− if new_text != old_text {
35− change_list.commit_traversal();
36− change_list.set_text(new_text);
37− }
38− }
39−
40− (&NodeKind::Text(_), &NodeKind::Element(_)) => {
41− change_list.commit_traversal();
42− create(cached_set, change_list, registry, new, cached_roots);
43− registry.remove_subtree(&old);
44− change_list.replace_with();
45− }
46−
47− (&NodeKind::Element(_), &NodeKind::Text(_)) => {
48− change_list.commit_traversal();
49− create(cached_set, change_list, registry, new, cached_roots);
50− // Note: text nodes cannot have event listeners, so we don't need to
51− // remove the old node's listeners from our registry her.
52− change_list.replace_with();
53− }
54−
55− (
56− &NodeKind::Element(ElementNode {
57− key: _,
58− tag_name: new_tag_name,
59− listeners: new_listeners,
60− attributes: new_attributes,
61− children: new_children,
62− namespace: new_namespace,
63− }),
64− &NodeKind::Element(ElementNode {
65− key: _,
66− tag_name: old_tag_name,
67− listeners: old_listeners,
68− attributes: old_attributes,
69− children: old_children,
70− namespace: old_namespace,
71− }),
72− ) => {
73− if new_tag_name != old_tag_name || new_namespace != old_namespace {
74− change_list.commit_traversal();
75− create(cached_set, change_list, registry, new, cached_roots);
76− registry.remove_subtree(&old);
77− change_list.replace_with();
78− return;
79− }
80− diff_listeners(change_list, registry, old_listeners, new_listeners);
81− diff_attributes(change_list, old_attributes, new_attributes, new_namespace.is_some());
82− diff_children(
83− cached_set,
84− change_list,
85− registry,
86− old_children,
87− new_children,
88− cached_roots,
89− );
90− }
91−
92− // Both the new and old nodes are cached.
93− (&NodeKind::Cached(ref new), &NodeKind::Cached(ref old)) => {
94− cached_roots.insert(new.id);
95−
96− if new.id == old.id {
97− // This is the same cached node, so nothing has changed!
98− return;
99− }
100−
101− let (new, new_template) = cached_set.get(new.id);
102− let (old, old_template) = cached_set.get(old.id);
103− if new_template == old_template {
104− // If they are both using the same template, then just diff the
105− // subtrees.
106− diff(cached_set, change_list, registry, old, new, cached_roots);
107− } else {
108− // Otherwise, they are probably different enough that
109− // re-constructing the subtree from scratch should be faster.
110− // This doubly holds true if we have a new template.
111− change_list.commit_traversal();
112− create_and_replace(
113− cached_set,
114− change_list,
115− registry,
116− new_template,
117− old,
118− new,
119− cached_roots,
120− );
121− }
122− }
123−
124− // New cached node when the old node was not cached. In this scenario,
125− // we assume that they are pretty different, and it isn't worth diffing
126− // the subtrees, so we just create the new cached node afresh.
127− (&NodeKind::Cached(ref c), _) => {
128− change_list.commit_traversal();
129− cached_roots.insert(c.id);
130− let (new, new_template) = cached_set.get(c.id);
131− create_and_replace(
132− cached_set,
133− change_list,
134− registry,
135− new_template,
136− old,
137− new,
138− cached_roots,
139− );
140− }
141−
142− // Old cached node and new non-cached node. Again, assume that they are
143− // probably pretty different and create the new non-cached node afresh.
144− (_, &NodeKind::Cached(_)) => {
145− change_list.commit_traversal();
146− create(cached_set, change_list, registry, new, cached_roots);
147− registry.remove_subtree(&old);
148− change_list.replace_with();
149− }
150− }
151−}
152−
153−// Diff event listeners between `old` and `new`.
154−//
155−// The listeners' node must be on top of the change list stack:
156−//
157−// [... node]
158−//
159−// The change list stack is left unchanged.
160−fn diff_listeners(
161− change_list: &mut ChangeListBuilder,
162− registry: &mut EventsRegistry,
163− old: &[Listener],
164− new: &[Listener],
165−) {
166− if !old.is_empty() || !new.is_empty() {
167− change_list.commit_traversal();
168− }
169−
170− 'outer1: for new_l in new {
171− unsafe {
172− // Safety relies on removing `new_l` from the registry manually at
173− // the end of its lifetime. This happens below in the `'outer2`
174− // loop, and elsewhere in diffing when removing old dom trees.
175− registry.add(new_l);
176− }
177−
178− for old_l in old {
179− if new_l.event == old_l.event {
180− change_list.update_event_listener(new_l);
181− continue 'outer1;
182− }
183− }
184−
185− change_list.new_event_listener(new_l);
186− }
187−
188− 'outer2: for old_l in old {
189− registry.remove(old_l);
190−
191− for new_l in new {
192− if new_l.event == old_l.event {
193− continue 'outer2;
194− }
195− }
196− change_list.remove_event_listener(old_l.event);
197− }
198−}
199−
200−// Diff a node's attributes.
201−//
202−// The attributes' node must be on top of the change list stack:
203−//
204−// [... node]
205−//
206−// The change list stack is left unchanged.
207−fn diff_attributes(change_list: &mut ChangeListBuilder, old: &[Attribute], new: &[Attribute], is_namespaced: bool) {
208− // Do O(n^2) passes to add/update and remove attributes, since
209− // there are almost always very few attributes.
210− 'outer: for new_attr in new {
211− if new_attr.is_volatile() {
212− change_list.commit_traversal();
213− change_list.set_attribute(new_attr.name, new_attr.value, is_namespaced);
214− } else {
215− for old_attr in old {
216− if old_attr.name == new_attr.name {
217− if old_attr.value != new_attr.value {
218− change_list.commit_traversal();
219− change_list.set_attribute(new_attr.name, new_attr.value, is_namespaced);
220− }
221− continue 'outer;
222− }
223− }
224−
225− change_list.commit_traversal();
226− change_list.set_attribute(new_attr.name, new_attr.value, is_namespaced);
227− }
228− }
229−
230− 'outer2: for old_attr in old {
231− for new_attr in new {
232− if old_attr.name == new_attr.name {
233− continue 'outer2;
234− }
235− }
236−
237− change_list.commit_traversal();
238− change_list.remove_attribute(old_attr.name);
239− }
240−}
241−
242−// Diff the given set of old and new children.
243−//
244−// The parent must be on top of the change list stack when this function is
245−// entered:
246−//
247−// [... parent]
248−//
249−// the change list stack is in the same state when this function returns.
250−fn diff_children(
251− cached_set: &CachedSet,
252− change_list: &mut ChangeListBuilder,
253− registry: &mut EventsRegistry,
254− old: &[Node],
255− new: &[Node],
256− cached_roots: &mut FxHashSet<CacheId>,
257−) {
258− if new.is_empty() {
259− if !old.is_empty() {
260− change_list.commit_traversal();
261− remove_all_children(change_list, registry, old);
262− }
263− return;
264− }
265−
266− if new.len() == 1 {
267− match (old.first(), &new[0]) {
268− (
269− Some(&Node {
270− kind: NodeKind::Text(TextNode { text: old_text }),
271− }),
272− &Node {
273− kind: NodeKind::Text(TextNode { text: new_text }),
274− },
275− ) if old_text == new_text => {
276− // Don't take this fast path...
277− }
278− (
279− _,
280− &Node {
281− kind: NodeKind::Text(TextNode { text }),
282− },
283− ) => {
284− change_list.commit_traversal();
285− change_list.set_text(text);
286− for o in old {
287− registry.remove_subtree(o);
288− }
289− return;
290− }
291− (_, _) => {}
292− }
293− }
294−
295− if old.is_empty() {
296− if !new.is_empty() {
297− change_list.commit_traversal();
298− create_and_append_children(cached_set, change_list, registry, new, cached_roots);
299− }
300− return;
301− }
302−
303− let new_is_keyed = new[0].key().is_some();
304− let old_is_keyed = old[0].key().is_some();
305−
306− debug_assert!(
307− new.iter().all(|n| n.key().is_some() == new_is_keyed),
308− "all siblings must be keyed or all siblings must be non-keyed"
309− );
310− debug_assert!(
311− old.iter().all(|o| o.key().is_some() == old_is_keyed),
312− "all siblings must be keyed or all siblings must be non-keyed"
313− );
314−
315− if new_is_keyed && old_is_keyed {
316− let t = change_list.next_temporary();
317− diff_keyed_children(cached_set, change_list, registry, old, new, cached_roots);
318− change_list.set_next_temporary(t);
319− } else {
320− diff_non_keyed_children(cached_set, change_list, registry, old, new, cached_roots);
321− }
322−}
323−
324−// Diffing "keyed" children.
325−//
326−// With keyed children, we care about whether we delete, move, or create nodes
327−// versus mutate existing nodes in place. Presumably there is some sort of CSS
328−// transition animation that makes the virtual DOM diffing algorithm
329−// observable. By specifying keys for nodes, we know which virtual DOM nodes
330−// must reuse (or not reuse) the same physical DOM nodes.
331−//
332−// This is loosely based on Inferno's keyed patching implementation. However, we
333−// have to modify the algorithm since we are compiling the diff down into change
334−// list instructions that will be executed later, rather than applying the
335−// changes to the DOM directly as we compare virtual DOMs.
336−//
337−// https://github.com/infernojs/inferno/blob/36fd96/packages/inferno/src/DOM/patching.ts#L530-L739
338−//
339−// When entering this function, the parent must be on top of the change list
340−// stack:
341−//
342−// [... parent]
343−//
344−// Upon exiting, the change list stack is in the same state.
345−fn diff_keyed_children(
346− cached_set: &CachedSet,
347− change_list: &mut ChangeListBuilder,
348− registry: &mut EventsRegistry,
349− old: &[Node],
350− new: &[Node],
351− cached_roots: &mut FxHashSet<CacheId>,
352−) {
353− if cfg!(debug_assertions) {
354− let mut keys = FxHashSet::default();
355− let mut assert_unique_keys = |children: &[Node]| {
356− keys.clear();
357− for child in children {
358− let key = child.key();
359− debug_assert!(
360− key.is_some(),
361− "if any sibling is keyed, all siblings must be keyed"
362− );
363− keys.insert(key);
364− }
365− debug_assert_eq!(
366− children.len(),
367− keys.len(),
368− "keyed siblings must each have a unique key"
369− );
370− };
371− assert_unique_keys(old);
372− assert_unique_keys(new);
373− }
374−
375− // First up, we diff all the nodes with the same key at the beginning of the
376− // children.
377− //
378− // `shared_prefix_count` is the count of how many nodes at the start of
379− // `new` and `old` share the same keys.
380− let shared_prefix_count =
381− match diff_keyed_prefix(cached_set, change_list, registry, old, new, cached_roots) {
382− KeyedPrefixResult::Finished => return,
383− KeyedPrefixResult::MoreWorkToDo(count) => count,
384− };
385−
386− // Next, we find out how many of the nodes at the end of the children have
387− // the same key. We do _not_ diff them yet, since we want to emit the change
388− // list instructions such that they can be applied in a single pass over the
389− // DOM. Instead, we just save this information for later.
390− //
391− // `shared_suffix_count` is the count of how many nodes at the end of `new`
392− // and `old` share the same keys.
393− let shared_suffix_count = old[shared_prefix_count..]
394− .iter()
395− .rev()
396− .zip(new[shared_prefix_count..].iter().rev())
397− .take_while(|&(old, new)| old.key() == new.key())
398− .count();
399−
400− let old_shared_suffix_start = old.len() - shared_suffix_count;
401− let new_shared_suffix_start = new.len() - shared_suffix_count;
402−
403− // Ok, we now hopefully have a smaller range of children in the middle
404− // within which to re-order nodes with the same keys, remove old nodes with
405− // now-unused keys, and create new nodes with fresh keys.
406− diff_keyed_middle(
407− cached_set,
408− change_list,
409− registry,
410− &old[shared_prefix_count..old_shared_suffix_start],
411− &new[shared_prefix_count..new_shared_suffix_start],
412− cached_roots,
413− shared_prefix_count,
414− shared_suffix_count,
415− old_shared_suffix_start,
416− );
417−
418− // Finally, diff the nodes at the end of `old` and `new` that share keys.
419− let old_suffix = &old[old_shared_suffix_start..];
420− let new_suffix = &new[new_shared_suffix_start..];
421− debug_assert_eq!(old_suffix.len(), new_suffix.len());
422− if !old_suffix.is_empty() {
423− diff_keyed_suffix(
424− cached_set,
425− change_list,
426− registry,
427− old_suffix,
428− new_suffix,
429− cached_roots,
430− new_shared_suffix_start,
431− );
432− }
433−}
434−
435−enum KeyedPrefixResult {
436− // Fast path: we finished diffing all the children just by looking at the
437− // prefix of shared keys!
438− Finished,
439− // There is more diffing work to do. Here is a count of how many children at
440− // the beginning of `new` and `old` we already processed.
441− MoreWorkToDo(usize),
442−}
443−
444−// Diff the prefix of children in `new` and `old` that share the same keys in
445−// the same order.
446−//
447−// Upon entry of this function, the change list stack must be:
448−//
449−// [... parent]
450−//
451−// Upon exit, the change list stack is the same.
452−fn diff_keyed_prefix(
453− cached_set: &CachedSet,
454− change_list: &mut ChangeListBuilder,
455− registry: &mut EventsRegistry,
456− old: &[Node],
457− new: &[Node],
458− cached_roots: &mut FxHashSet<CacheId>,
459−) -> KeyedPrefixResult {
460− change_list.go_down();
461− let mut shared_prefix_count = 0;
462−
463− for (i, (old, new)) in old.iter().zip(new.iter()).enumerate() {
464− if old.key() != new.key() {
465− break;
466− }
467−
468− change_list.go_to_sibling(i);
469− diff(cached_set, change_list, registry, old, new, cached_roots);
470− shared_prefix_count += 1;
471− }
472−
473− // If that was all of the old children, then create and append the remaining
474− // new children and we're finished.
475− if shared_prefix_count == old.len() {
476− change_list.go_up();
477− change_list.commit_traversal();
478− create_and_append_children(
479− cached_set,
480− change_list,
481− registry,
482− &new[shared_prefix_count..],
483− cached_roots,
484− );
485− return KeyedPrefixResult::Finished;
486− }
487−
488− // And if that was all of the new children, then remove all of the remaining
489− // old children and we're finished.
490− if shared_prefix_count == new.len() {
491− change_list.go_to_sibling(shared_prefix_count);
492− change_list.commit_traversal();
493− remove_self_and_next_siblings(change_list, registry, &old[shared_prefix_count..]);
494− return KeyedPrefixResult::Finished;
495− }
496−
497− change_list.go_up();
498− KeyedPrefixResult::MoreWorkToDo(shared_prefix_count)
499−}
500−
501−// The most-general, expensive code path for keyed children diffing.
502−//
503−// We find the longest subsequence within `old` of children that are relatively
504−// ordered the same way in `new` (via finding a longest-increasing-subsequence
505−// of the old child's index within `new`). The children that are elements of
506−// this subsequence will remain in place, minimizing the number of DOM moves we
507−// will have to do.
508−//
509−// Upon entry to this function, the change list stack must be:
510−//
511−// [... parent]
512−//
513−// Upon exit from this function, it will be restored to that same state.
514−fn diff_keyed_middle(
515− cached_set: &CachedSet,
516− change_list: &mut ChangeListBuilder,
517− registry: &mut EventsRegistry,
518− old: &[Node],
519− mut new: &[Node],
520− cached_roots: &mut FxHashSet<CacheId>,
521− shared_prefix_count: usize,
522− shared_suffix_count: usize,
523− old_shared_suffix_start: usize,
524−) {
525− // Should have already diffed the shared-key prefixes and suffixes.
526− debug_assert_ne!(new.first().map(|n| n.key()), old.first().map(|o| o.key()));
527− debug_assert_ne!(new.last().map(|n| n.key()), old.last().map(|o| o.key()));
528−
529− // The algorithm below relies upon using `u32::MAX` as a sentinel
530− // value, so if we have that many new nodes, it won't work. This
531− // check is a bit academic (hence only enabled in debug), since
532− // wasm32 doesn't have enough address space to hold that many nodes
533− // in memory.
534− debug_assert!(new.len() < u32::MAX as usize);
535−
536− // Map from each `old` node's key to its index within `old`.
537− let mut old_key_to_old_index = FxHashMap::default();
538− old_key_to_old_index.reserve(old.len());
539− old_key_to_old_index.extend(old.iter().enumerate().map(|(i, o)| (o.key(), i)));
540−
541− // The set of shared keys between `new` and `old`.
542− let mut shared_keys = FxHashSet::default();
543− // Map from each index in `new` to the index of the node in `old` that
544− // has the same key.
545− let mut new_index_to_old_index = Vec::with_capacity(new.len());
546− new_index_to_old_index.extend(new.iter().map(|n| {
547− let key = n.key();
548− if let Some(&i) = old_key_to_old_index.get(&key) {
549− shared_keys.insert(key);
550− i
551− } else {
552− u32::MAX as usize
553− }
554− }));
555−
556− // If none of the old keys are reused by the new children, then we
557− // remove all the remaining old children and create the new children
558− // afresh.
559− if shared_suffix_count == 0 && shared_keys.is_empty() {
560− if shared_prefix_count == 0 {
561− change_list.commit_traversal();
562− remove_all_children(change_list, registry, old);
563− } else {
564− change_list.go_down_to_child(shared_prefix_count);
565− change_list.commit_traversal();
566− remove_self_and_next_siblings(change_list, registry, &old[shared_prefix_count..]);
567− }
568− create_and_append_children(cached_set, change_list, registry, new, cached_roots);
569− return;
570− }
571−
572− // Save each of the old children whose keys are reused in the new
573− // children.
574− let mut old_index_to_temp = vec![u32::MAX; old.len()];
575− let mut start = 0;
576− loop {
577− let end = (start..old.len())
578− .find(|&i| {
579− let key = old[i].key();
580− !shared_keys.contains(&key)
581− })
582− .unwrap_or(old.len());
583−
584− if end - start > 0 {
585− change_list.commit_traversal();
586− let mut t = change_list.save_children_to_temporaries(
587− shared_prefix_count + start,
588− shared_prefix_count + end,
589− );
590− for i in start..end {
591− old_index_to_temp[i] = t;
592− t += 1;
593− }
594− }
595−
596− debug_assert!(end <= old.len());
597− if end == old.len() {
598− break;
599− } else {
600− start = end + 1;
601− }
602− }
603−
604− // Remove any old children whose keys were not reused in the new
605− // children. Remove from the end first so that we don't mess up indices.
606− let mut removed_count = 0;
607− for (i, old_child) in old.iter().enumerate().rev() {
608− if !shared_keys.contains(&old_child.key()) {
609− registry.remove_subtree(old_child);
610− change_list.commit_traversal();
611− change_list.remove_child(i + shared_prefix_count);
612− removed_count += 1;
613− }
614− }
615−
616− // If there aren't any more new children, then we are done!
617− if new.is_empty() {
618− return;
619− }
620−
621− // The longest increasing subsequence within `new_index_to_old_index`. This
622− // is the longest sequence on DOM nodes in `old` that are relatively ordered
623− // correctly within `new`. We will leave these nodes in place in the DOM,
624− // and only move nodes that are not part of the LIS. This results in the
625− // maximum number of DOM nodes left in place, AKA the minimum number of DOM
626− // nodes moved.
627− let mut new_index_is_in_lis = FxHashSet::default();
628− new_index_is_in_lis.reserve(new_index_to_old_index.len());
629− let mut predecessors = vec![0; new_index_to_old_index.len()];
630− let mut starts = vec![0; new_index_to_old_index.len()];
631− longest_increasing_subsequence::lis_with(
632− &new_index_to_old_index,
633− &mut new_index_is_in_lis,
634− |a, b| a < b,
635− &mut predecessors,
636− &mut starts,
637− );
638−
639− // Now we will iterate from the end of the new children back to the
640− // beginning, diffing old children we are reusing and if they aren't in the
641− // LIS moving them to their new destination, or creating new children. Note
642− // that iterating in reverse order lets us use `Node.prototype.insertBefore`
643− // to move/insert children.
644− //
645− // But first, we ensure that we have a child on the change list stack that
646− // we can `insertBefore`. We handle this once before looping over `new`
647− // children, so that we don't have to keep checking on every loop iteration.
648− if shared_suffix_count > 0 {
649− // There is a shared suffix after these middle children. We will be
650− // inserting before that shared suffix, so add the first child of that
651− // shared suffix to the change list stack.
652− //
653− // [... parent]
654− change_list.go_down_to_child(old_shared_suffix_start - removed_count);
655− // [... parent first_child_of_shared_suffix]
656− } else {
657− // There is no shared suffix coming after these middle children.
658− // Therefore we have to process the last child in `new` and move it to
659− // the end of the parent's children if it isn't already there.
660− let last_index = new.len() - 1;
661− let last = new.last().unwrap_throw();
662− new = &new[..new.len() - 1];
663− if shared_keys.contains(&last.key()) {
664− let old_index = new_index_to_old_index[last_index];
665− let temp = old_index_to_temp[old_index];
666− // [... parent]
667− change_list.go_down_to_temp_child(temp);
668− // [... parent last]
669− diff(
670− cached_set,
671− change_list,
672− registry,
673− &old[old_index],
674− last,
675− cached_roots,
676− );
677− if new_index_is_in_lis.contains(&last_index) {
678− // Don't move it, since it is already where it needs to be.
679− } else {
680− change_list.commit_traversal();
681− // [... parent last]
682− change_list.append_child();
683− // [... parent]
684− change_list.go_down_to_temp_child(temp);
685− // [... parent last]
686− }
687− } else {
688− change_list.commit_traversal();
689− // [... parent]
690− create(cached_set, change_list, registry, last, cached_roots);
691− // [... parent last]
692− change_list.append_child();
693− // [... parent]
694− change_list.go_down_to_reverse_child(0);
695− // [... parent last]
696− }
697− }
698−
699− for (new_index, new_child) in new.iter().enumerate().rev() {
700− let old_index = new_index_to_old_index[new_index];
701− if old_index == u32::MAX as usize {
702− debug_assert!(!shared_keys.contains(&new_child.key()));
703− change_list.commit_traversal();
704− // [... parent successor]
705− create(cached_set, change_list, registry, new_child, cached_roots);
706− // [... parent successor new_child]
707− change_list.insert_before();
708− // [... parent new_child]
709− } else {
710− debug_assert!(shared_keys.contains(&new_child.key()));
711− let temp = old_index_to_temp[old_index];
712− debug_assert_ne!(temp, u32::MAX);
713−
714− if new_index_is_in_lis.contains(&new_index) {
715− // [... parent successor]
716− change_list.go_to_temp_sibling(temp);
717− // [... parent new_child]
718− } else {
719− change_list.commit_traversal();
720− // [... parent successor]
721− change_list.push_temporary(temp);
722− // [... parent successor new_child]
723− change_list.insert_before();
724− // [... parent new_child]
725− }
726−
727− diff(
728− cached_set,
729− change_list,
730− registry,
731− &old[old_index],
732− new_child,
733− cached_roots,
734− );
735− }
736− }
737−
738− // [... parent child]
739− change_list.go_up();
740− // [... parent]
741−}
742−
743−// Diff the suffix of keyed children that share the same keys in the same order.
744−//
745−// The parent must be on the change list stack when we enter this function:
746−//
747−// [... parent]
748−//
749−// When this function exits, the change list stack remains the same.
750−fn diff_keyed_suffix(
751− cached_set: &CachedSet,
752− change_list: &mut ChangeListBuilder,
753− registry: &mut EventsRegistry,
754− old: &[Node],
755− new: &[Node],
756− cached_roots: &mut FxHashSet<CacheId>,
757− new_shared_suffix_start: usize,
758−) {
759− debug_assert_eq!(old.len(), new.len());
760− debug_assert!(!old.is_empty());
761−
762− // [... parent]
763− change_list.go_down();
764− // [... parent new_child]
765−
766− for (i, (old_child, new_child)) in old.iter().zip(new.iter()).enumerate() {
767− change_list.go_to_sibling(new_shared_suffix_start + i);
768− diff(
769− cached_set,
770− change_list,
771− registry,
772− old_child,
773− new_child,
774− cached_roots,
775− );
776− }
777−
778− // [... parent]
779− change_list.go_up();
780−}
781−
782−// Diff children that are not keyed.
783−//
784−// The parent must be on the top of the change list stack when entering this
785−// function:
786−//
787−// [... parent]
788−//
789−// the change list stack is in the same state when this function returns.
790−fn diff_non_keyed_children(
791− cached_set: &CachedSet,
792− change_list: &mut ChangeListBuilder,
793− registry: &mut EventsRegistry,
794− old: &[Node],
795− new: &[Node],
796− cached_roots: &mut FxHashSet<CacheId>,
797−) {
798− // Handled these cases in `diff_children` before calling this function.
799− debug_assert!(!new.is_empty());
800− debug_assert!(!old.is_empty());
801−
802− // [... parent]
803− change_list.go_down();
804− // [... parent child]
805−
806− for (i, (new_child, old_child)) in new.iter().zip(old.iter()).enumerate() {
807− // [... parent prev_child]
808− change_list.go_to_sibling(i);
809− // [... parent this_child]
810− diff(
811− cached_set,
812− change_list,
813− registry,
814− old_child,
815− new_child,
816− cached_roots,
817− );
818− }
819−
820− match old.len().cmp(&new.len()) {
821− Ordering::Greater => {
822− // [... parent prev_child]
823− change_list.go_to_sibling(new.len());
824− // [... parent first_child_to_remove]
825− change_list.commit_traversal();
826− remove_self_and_next_siblings(change_list, registry, &old[new.len()..]);
827− // [... parent]
828− }
829− Ordering::Less => {
830− // [... parent last_child]
831− change_list.go_up();
832− // [... parent]
833− change_list.commit_traversal();
834− create_and_append_children(
835− cached_set,
836− change_list,
837− registry,
838− &new[old.len()..],
839− cached_roots,
840− );
841− }
842− Ordering::Equal => {
843− // [... parent child]
844− change_list.go_up();
845− // [... parent]
846− }
847− }
848−}
849−
850−// Create the given children and append them to the parent node.
851−//
852−// The parent node must currently be on top of the change list stack:
853−//
854−// [... parent]
855−//
856−// When this function returns, the change list stack is in the same state.
857−fn create_and_append_children(
858− cached_set: &CachedSet,
859− change_list: &mut ChangeListBuilder,
860− registry: &mut EventsRegistry,
861− new: &[Node],
862− cached_roots: &mut FxHashSet<CacheId>,
863−) {
864− debug_assert!(change_list.traversal_is_committed());
865− for child in new {
866− create(cached_set, change_list, registry, child, cached_roots);
867− change_list.append_child();
868− }
869−}
870−
871−// Remove all of a node's children.
872−//
873−// The change list stack must have this shape upon entry to this function:
874−//
875−// [... parent]
876−//
877−// When this function returns, the change list stack is in the same state.
878−fn remove_all_children(
879− change_list: &mut ChangeListBuilder,
880− registry: &mut EventsRegistry,
881− old: &[Node],
882−) {
883− debug_assert!(change_list.traversal_is_committed());
884− for child in old {
885− registry.remove_subtree(child);
886− }
887− // Fast way to remove all children: set the node's textContent to an empty
888− // string.
889− change_list.set_text("");
890−}
891−
892−// Remove the current child and all of its following siblings.
893−//
894−// The change list stack must have this shape upon entry to this function:
895−//
896−// [... parent child]
897−//
898−// After the function returns, the child is no longer on the change list stack:
899−//
900−// [... parent]
901−fn remove_self_and_next_siblings(
902− change_list: &mut ChangeListBuilder,
903− registry: &mut EventsRegistry,
904− old: &[Node],
905−) {
906− debug_assert!(change_list.traversal_is_committed());
907− for child in old {
908− registry.remove_subtree(child);
909− }
910− change_list.remove_self_and_next_siblings();
911−}
912−
913−// Emit instructions to create the given virtual node.
914−//
915−// The change list stack may have any shape upon entering this function:
916−//
917−// [...]
918−//
919−// When this function returns, the new node is on top of the change list stack:
920−//
921−// [... node]
922−fn create(
923− cached_set: &CachedSet,
924− change_list: &mut ChangeListBuilder,
925− registry: &mut EventsRegistry,
926− node: &Node,
927− cached_roots: &mut FxHashSet<CacheId>,
928−) {
929− debug_assert!(change_list.traversal_is_committed());
930− match node.kind {
931− NodeKind::Text(TextNode { text }) => {
932− change_list.create_text_node(text);
933− }
934− NodeKind::Element(&ElementNode {
935− key: _,
936− tag_name,
937− listeners,
938− attributes,
939− children,
940− namespace,
941− }) => {
942− if let Some(namespace) = namespace {
943− change_list.create_element_ns(tag_name, namespace);
944− } else {
945− change_list.create_element(tag_name);
946− }
947−
948− for l in listeners {
949− unsafe {
950− registry.add(l);
951− }
952− change_list.new_event_listener(l);
953− }
954−
955− for attr in attributes {
956− change_list.set_attribute(&attr.name, &attr.value, namespace.is_some());
957− }
958−
959− // Fast path: if there is a single text child, it is faster to
960− // create-and-append the text node all at once via setting the
961− // parent's `textContent` in a single change list instruction than
962− // to emit three instructions to (1) create a text node, (2) set its
963− // text content, and finally (3) append the text node to this
964− // parent.
965− if children.len() == 1 {
966− if let Node {
967− kind: NodeKind::Text(TextNode { text }),
968− } = children[0]
969− {
970− change_list.set_text(text);
971− return;
972− }
973− }
974−
975− for child in children {
976− create(cached_set, change_list, registry, child, cached_roots);
977− change_list.append_child();
978− }
979− }
980− NodeKind::Cached(ref c) => {
981− cached_roots.insert(c.id);
982− let (node, template) = cached_set.get(c.id);
983− if let Some(template) = template {
984− create_with_template(
985− cached_set,
986− change_list,
987− registry,
988− template,
989− node,
990− cached_roots,
991− );
992− } else {
993− create(cached_set, change_list, registry, node, cached_roots);
994− }
995− }
996− }
997−}
998−
999−// Get or create the template.
1000−//
1001−// Upon entering this function the change list stack may be in any shape:
1002−//
1003−// [...]
1004−//
1005−// When this function returns, it leaves a freshly cloned copy of the template
1006−// on the top of the change list stack:
1007−//
1008−// [... template]
1009−#[inline]
1010−fn get_or_create_template<'a>(
1011− cached_set: &'a CachedSet,
1012− change_list: &mut ChangeListBuilder,
1013− registry: &mut EventsRegistry,
1014− cached_roots: &mut FxHashSet<CacheId>,
1015− template_id: CacheId,
1016−) -> (&'a Node<'a>, bool) {
1017− let (template, template_template) = cached_set.get(template_id);
1018− debug_assert!(
1019− template_template.is_none(),
1020− "templates should not be templated themselves"
1021− );
1022−
1023− // If we haven't already created and saved the physical DOM subtree for this
1024− // template, do that now.
1025− if change_list.has_template(template_id) {
1026− // Clone the template and push it onto the stack.
1027− //
1028− // [...]
1029− change_list.push_template(template_id);
1030− // [... template]
1031−
1032− (template, true)
1033− } else {
1034− // [...]
1035− create(cached_set, change_list, registry, template, cached_roots);
1036− // [... template]
1037− change_list.save_template(template_id);
1038− // [... template]
1039−
1040− (template, false)
1041− }
1042−}
1043−
1044−fn create_and_replace(
1045− cached_set: &CachedSet,
1046− change_list: &mut ChangeListBuilder,
1047− registry: &mut EventsRegistry,
1048− new_template: Option<CacheId>,
1049− old: &Node,
1050− new: &Node,
1051− cached_roots: &mut FxHashSet<CacheId>,
1052−) {
1053− debug_assert!(change_list.traversal_is_committed());
1054−
1055− if let Some(template_id) = new_template {
1056− let (template, needs_listeners) =
1057− get_or_create_template(cached_set, change_list, registry, cached_roots, template_id);
1058− change_list.replace_with();
1059−
1060− let mut old_forcing = None;
1061− if needs_listeners {
1062− old_forcing = Some(change_list.push_force_new_listeners());
1063− }
1064−
1065− diff(
1066− cached_set,
1067− change_list,
1068− registry,
1069− template,
1070− new,
1071− cached_roots,
1072− );
1073−
1074− if let Some(old) = old_forcing {
1075− change_list.pop_force_new_listeners(old);
1076− }
1077−
1078− change_list.commit_traversal();
1079− } else {
1080− create(cached_set, change_list, registry, new, cached_roots);
1081− change_list.replace_with();
1082− }
1083− registry.remove_subtree(old);
1084−}
1085−
1086−fn create_with_template(
1087− cached_set: &CachedSet,
1088− change_list: &mut ChangeListBuilder,
1089− registry: &mut EventsRegistry,
1090− template_id: CacheId,
1091− node: &Node,
1092− cached_roots: &mut FxHashSet<CacheId>,
1093−) {
1094− debug_assert!(change_list.traversal_is_committed());
1095−
1096− // [...]
1097− let (template, needs_listeners) =
1098− get_or_create_template(cached_set, change_list, registry, cached_roots, template_id);
1099− // [... template]
1100−
1101− // Now diff the node with its template.
1102− //
1103− // We must force adding new listeners instead of updating existing ones,
1104− // since listeners don't get cloned in `cloneNode`.
1105− let mut old_forcing = None;
1106− if needs_listeners {
1107− old_forcing = Some(change_list.push_force_new_listeners());
1108− }
1109−
1110− diff(
1111− cached_set,
1112− change_list,
1113− registry,
1114− template,
1115− node,
1116− cached_roots,
1117− );
1118−
1119− if let Some(old) = old_forcing {
1120− change_list.pop_force_new_listeners(old);
1121− }
1122−
1123− // Make sure that we come back up to the level we were at originally.
1124− change_list.commit_traversal();
1125−}
src/events.rs+15−36
@@ -1,9 +1,10 @@
1−use crate::{node::Node, vdom::VdomInner, Listener};
1+use crate::vdom::VdomInner;
2+use crate::Listener;
2use std::cell::RefCell;
3use std::cell::RefCell;
3use std::rc::{Rc, Weak};
4use std::rc::{Rc, Weak};
4
5
5cfg_if::cfg_if! {
6cfg_if::cfg_if! {
6− if #[cfg(all(feature = "xxx-unstable-internal-use-only", not(target_arch = "wasm32")))] {
7+ if #[cfg(feature = "xxx-unstable-internal-use-only")] {
7 #[derive(Debug)]
8 #[derive(Debug)]
8 pub(crate) struct EventsRegistry {}
9 pub(crate) struct EventsRegistry {}
9 impl EventsRegistry {
10 impl EventsRegistry {
@@ -13,17 +14,12 @@ cfg_if::cfg_if! {
13 ) {
14 ) {
14 (Rc::new(RefCell::new(EventsRegistry {})), ())
15 (Rc::new(RefCell::new(EventsRegistry {})), ())
15 }
16 }
16− pub(crate) fn remove(&mut self, _listener: &Listener) {}
17− pub(crate) fn remove_subtree(&mut self, _node: &Node) {}
18 pub(crate) unsafe fn add<'a>(&mut self, _listener: &'a Listener<'a>) {}
17 pub(crate) unsafe fn add<'a>(&mut self, _listener: &'a Listener<'a>) {}
19 pub(crate) fn clear_active_listeners(&mut self) {}
18 pub(crate) fn clear_active_listeners(&mut self) {}
20 }
19 }
21 } else {
20 } else {
22− use crate::{
23− node::{ElementNode, ListenerCallback, NodeKind},
24− vdom::VdomWeak,
21+ use crate::{ListenerCallback, vdom::VdomWeak};
25− };
22+ use std::collections::HashMap;
26− use fxhash::FxHashMap;
27 use std::fmt;
23 use std::fmt;
28 use std::mem;
24 use std::mem;
29 use wasm_bindgen::closure::Closure;
25 use wasm_bindgen::closure::Closure;
@@ -35,7 +31,7 @@ cfg_if::cfg_if! {
35 /// buffering.
31 /// buffering.
36 pub(crate) struct EventsRegistry {
32 pub(crate) struct EventsRegistry {
37 vdom: Weak<VdomInner>,
33 vdom: Weak<VdomInner>,
38− active: FxHashMap<(u32, u32), ListenerCallback<'static>>,
34+ active: HashMap<(u32, u32), ListenerCallback<'static>>,
39 }
35 }
40
36
41 impl fmt::Debug for EventsRegistry {
37 impl fmt::Debug for EventsRegistry {
@@ -58,11 +54,12 @@ cfg_if::cfg_if! {
58 ) {
54 ) {
59 let registry = Rc::new(RefCell::new(EventsRegistry {
55 let registry = Rc::new(RefCell::new(EventsRegistry {
60 vdom,
56 vdom,
61− active: FxHashMap::default(),
57+ active: HashMap::new(),
62 }));
58 }));
63
59
64 let weak_registry = Rc::downgrade(&registry);
60 let weak_registry = Rc::downgrade(&registry);
65 let closure = Closure::wrap(Box::new(move |event, a, b| {
61 let closure = Closure::wrap(Box::new(move |event, a, b| {
62+ debug!("Events trampoline invoked with (0x{:x}, 0x{:x})", a, b);
66 debug_assert!(a != 0);
63 debug_assert!(a != 0);
67
64
68 // if the VdomInnerExclusive is keeping this closure alive, then the
65 // if the VdomInnerExclusive is keeping this closure alive, then the
@@ -86,41 +83,22 @@ cfg_if::cfg_if! {
86 callback(component, vdom_weak, event);
83 callback(component, vdom_weak, event);
87 }
84 }
88 }
85 }
89− }) as Box<dyn Fn(web_sys::Event, u32, u32)>);
86+ }) as Box<Fn(web_sys::Event, u32, u32)>);
90
87
91 (registry, closure)
88 (registry, closure)
92 }
89 }
93
90
94− pub(crate) fn remove(&mut self, listener: &Listener) {
95− let id = listener.get_callback_parts();
96− debug_assert!(id.0 != 0);
97− self.active.remove(&id);
98− }
99−
100− pub(crate) fn remove_subtree(&mut self, node: &Node) {
101− match node.kind {
102− NodeKind::Cached(_) | NodeKind::Text(_) => {},
103− NodeKind::Element(&ElementNode {listeners, children, ..}) => {
104− for l in listeners {
105− self.remove(l);
106− }
107− for child in children {
108− self.remove_subtree(child)
109− }
110− }
111− }
112− }
113−
114 /// Add an event listener to the registry, exposing to JS.
91 /// Add an event listener to the registry, exposing to JS.
115 ///
92 ///
116 /// # Unsafety
93 /// # Unsafety
117 ///
94 ///
118− /// The listener's lifetime is extended to `'static` and it is the
95+ /// The listener's lifetime is extended to `'static` and it is the caller's
119− /// caller's responsibility to ensure that the listener is not kept
96+ /// responsibility to ensure that the listener is not kept in the registry
120− /// in the registry after it is dropped. This is maintained during
97+ /// after it is dropped. This is typically done via clearing the whole
121− /// diffing.
98+ /// registry on each render and repopulating it during diffing.
122 pub(crate) unsafe fn add<'a>(&mut self, listener: &'a Listener<'a>) {
99 pub(crate) unsafe fn add<'a>(&mut self, listener: &'a Listener<'a>) {
123 let id = listener.get_callback_parts();
100 let id = listener.get_callback_parts();
101+ debug!("EventsRegistry::add(0x{:x}, 0x{:x})", id.0, id.1);
124 debug_assert!(id.0 != 0);
102 debug_assert!(id.0 != 0);
125
103
126 let callback =
104 let callback =
@@ -131,6 +109,7 @@ cfg_if::cfg_if! {
131
109
132 /// Clear all event listeners from the registry.
110 /// Clear all event listeners from the registry.
133 pub(crate) fn clear_active_listeners(&mut self) {
111 pub(crate) fn clear_active_listeners(&mut self) {
112+ debug!("EventsRegistry::clear_active_listeners()");
134 self.active.clear();
113 self.active.clear();
135 }
114 }
136 }
115 }
src/lib.rs+7−48
@@ -18,14 +18,14 @@
18//! }
18//! }
19//! }
19//! }
20//!
20//!
21−//! impl<'a, 'who> Render<'a> for Hello<'who> {
21+//! impl<'who> Render for Hello<'who> {
22−//! fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
22+//! fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
23//! use dodrio::builder::*;
23//! use dodrio::builder::*;
24//!
24//!
25//! let id = bumpalo::format!(in cx.bump, "hello-{}", self.who);
25//! let id = bumpalo::format!(in cx.bump, "hello-{}", self.who);
26//! let who = bumpalo::collections::String::from_str_in(self.who, cx.bump).into_bump_str();
26//! let who = bumpalo::collections::String::from_str_in(self.who, cx.bump).into_bump_str();
27//!
27//!
28−//! div(&cx)
28+//! div(cx.bump)
29//! .attr("id", id.into_bump_str())
29//! .attr("id", id.into_bump_str())
30//! .on("click", |root, _vdom, _event| {
30//! .on("click", |root, _vdom, _event| {
31//! let hello = root.unwrap_mut::<Hello>();
31//! let hello = root.unwrap_mut::<Hello>();
@@ -35,7 +35,7 @@
35//! })
35//! })
36//! .children([
36//! .children([
37//! text("Hello, "),
37//! text("Hello, "),
38−//! strong(&cx)
38+//! strong(cx.bump)
39//! .children([
39//! .children([
40//! text(who),
40//! text(who),
41//! text("!"),
41//! text("!"),
@@ -61,60 +61,26 @@ cfg_if::cfg_if! {
61 }
61 }
62}
62}
63
63
64−// A macro to expose items unstably, only for internal/testing usage.
65−cfg_if::cfg_if! {
66− if #[cfg(feature = "xxx-unstable-internal-use-only")] {
67− macro_rules! pub_unstable_internal {
68− ( $(#[$attr:meta])* pub(crate) $( $thing:tt )* ) => {
69− #[doc(hidden)]
70− $( #[$attr] )*
71− pub $( $thing )*
72− }
73− }
74− } else {
75− macro_rules! pub_unstable_internal {
76− ( $(#[$attr:meta])* pub(crate) $( $thing:tt )* ) => {
77− $( #[$attr] )*
78− pub(crate) $( $thing )*
79− }
80− }
81− }
82−}
83−
84// Only `pub` so that the wasm-bindgen bindings work.
64// Only `pub` so that the wasm-bindgen bindings work.
85#[doc(hidden)]
65#[doc(hidden)]
86pub mod change_list;
66pub mod change_list;
87
67
88−mod cached;
89−mod cached_set;
90−mod diff;
91mod events;
68mod events;
92mod node;
69mod node;
93mod render;
70mod render;
94mod render_context;
71mod render_context;
95−mod strace;
96mod vdom;
72mod vdom;
97
73
98pub mod builder;
74pub mod builder;
99
75
100// Re-export items at the top level.
76// Re-export items at the top level.
101−pub use self::cached::Cached;
102−pub use self::node::{Attribute, Listener, Node, NodeKey};
77+pub use self::node::{Attribute, ElementNode, Listener, ListenerCallback, Node, TextNode};
103pub use self::render::{Render, RootRender};
78pub use self::render::{Render, RootRender};
104pub use self::render_context::RenderContext;
79pub use self::render_context::RenderContext;
105pub use self::vdom::{Vdom, VdomWeak};
80pub use self::vdom::{Vdom, VdomWeak};
106
81
107cfg_if::cfg_if! {
82cfg_if::cfg_if! {
108− if #[cfg(all(target_arch = "wasm32", not(feature = "xxx-unstable-internal-use-only")))] {
109− use wasm_bindgen::__rt::WasmRefCell as RefCell;
110− } else {
111− use std::cell::RefCell;
112− }
113−}
114−
115−// Polyfill some Web stuff for benchmarking...
116−cfg_if::cfg_if! {
117− if #[cfg(all(feature = "xxx-unstable-internal-use-only", not(target_arch = "wasm32")))] {
83+ if #[cfg(feature = "xxx-unstable-internal-use-only")] {
118 /// An element node in the physical DOM.
84 /// An element node in the physical DOM.
119 pub type Element = ();
85 pub type Element = ();
120
86
@@ -123,13 +89,6 @@ cfg_if::cfg_if! {
123 /// An element node in the physical DOM.
89 /// An element node in the physical DOM.
124 pub type Element = web_sys::Element;
90 pub type Element = web_sys::Element;
125
91
126− pub(crate) type EventsTrampoline = wasm_bindgen::closure::Closure<dyn Fn(web_sys::Event, u32, u32)>;
92+ pub(crate) type EventsTrampoline = wasm_bindgen::closure::Closure<Fn(web_sys::Event, u32, u32)>;
127− }
128−}
129−
130−cfg_if::cfg_if! {
131− if #[cfg(feature = "xxx-unstable-internal-use-only")] {
132− pub use self::cached_set::{CachedSet};
133− pub use self::node::{ElementNode, NodeKind, TextNode};
134 }
93 }
135}
94}
src/node.rs+87−135
@@ -1,111 +1,35 @@
1−use crate::{cached_set::CacheId, RootRender, VdomWeak};
1+use crate::{RootRender, VdomWeak};
2use bumpalo::Bump;
2use bumpalo::Bump;
3use std::fmt;
3use std::fmt;
4use std::iter;
4use std::iter;
5use std::mem;
5use std::mem;
6−use std::u32;
7
6
8−/// A virtual DOM node.
7+/// A node is either a text node or an element.
9#[derive(Debug, Clone)]
8#[derive(Debug, Clone)]
10−pub struct Node<'a> {
9+pub enum Node<'a> {
11− #[cfg(feature = "xxx-unstable-internal-use-only")]
10+ /// A text node.
12− #[doc(hidden)]
11+ Text(TextNode<'a>),
13− pub kind: NodeKind<'a>,
14
12
15− #[cfg(not(feature = "xxx-unstable-internal-use-only"))]
13+ /// An element potentially with attributes and children.
16− pub(crate) kind: NodeKind<'a>,
14+ Element(ElementNode<'a>),
17}
15}
18
16
19−pub_unstable_internal! {
20− /// A node is either a text node or an element.
21− #[derive(Debug, Clone)]
22− pub(crate) enum NodeKind<'a> {
23− /// A text node.
24− Text(TextNode<'a>),
25−
26− /// An element potentially with attributes and children.
27− Element(&'a ElementNode<'a>),
28−
29− /// A node in the vdom's `CachedSet`. This allows us to avoid
30− /// re-rendering and re-diffing subtrees.
31− Cached(CachedNode),
32− }
33−}
34−
35−pub_unstable_internal! {
36− /// Text nodes are just a string of text. They cannot have attributes or
17+/// Text nodes are just a string of text. They cannot have attributes or
37− /// children.
18+/// children.
38− #[derive(Debug, Clone)]
19+#[derive(Debug, Clone)]
39− pub(crate) struct TextNode<'a> {
20+pub struct TextNode<'a> {
40− pub text: &'a str,
21+ pub(crate) text: &'a str,
41− }
42−}
43−
44−pub_unstable_internal! {
45− /// Elements have a tag name, zero or more attributes, and zero or more
46− /// children.
47− #[derive(Debug, Clone)]
48− pub(crate) struct ElementNode<'a> {
49− pub key: NodeKey,
50− pub tag_name: &'a str,
51− pub listeners: &'a [Listener<'a>],
52− pub attributes: &'a [Attribute<'a>],
53− pub children: &'a [Node<'a>],
54− pub namespace: Option<&'a str>,
55− }
56−}
57−
58−pub_unstable_internal! {
59− /// A cached node exists in an arena that is internal to the `Vdom`. It
60− /// allows us to avoid both re-rendering a sub-tree and re-diffing
61− /// it. `CachedNode`s cannot contain cycles, since they can only contain
62− /// other `CachedNode`s that already exist when they are being constructed.
63− #[derive(Debug, Clone, Copy)]
64− pub(crate) struct CachedNode {
65− pub id: CacheId,
66− // Always a copy of the inner cached node's key.
67− pub key: NodeKey,
68− }
69−}
70−
71−/// The key for keyed children.
72−///
73−/// Keys must be unique among siblings.
74−///
75−/// If any sibling is keyed, then they all must be keyed.
76−#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
77−pub struct NodeKey(pub(crate) u32);
78−
79−impl Default for NodeKey {
80− fn default() -> NodeKey {
81− NodeKey::NONE
82− }
83}
22}
84
23
85−impl NodeKey {
24+/// Elements have a tag name, zero or more attributes, and zero or more
86− /// The default, lack of a key.
25+/// children.
87− pub const NONE: NodeKey = NodeKey(u32::MAX);
26+#[derive(Debug, Clone)]
88−
27+pub struct ElementNode<'a> {
89− /// Is this key `NodeKey::NONE`?
28+ pub(crate) tag_name: &'a str,
90− #[inline]
29+ pub(crate) listeners: &'a [Listener<'a>],
91− pub fn is_none(&self) -> bool {
30+ pub(crate) attributes: &'a [Attribute<'a>],
92− *self == Self::NONE
31+ pub(crate) children: &'a [Node<'a>],
93− }
32+ pub(crate) namespace: Option<&'a str>,
94−
95− /// Is this key not `NodeKey::NONE`?
96− #[inline]
97− pub fn is_some(&self) -> bool {
98− !self.is_none()
99− }
100−
101− /// Create a new `NodeKey`.
102− ///
103− /// `key` must not be `u32::MAX`.
104− #[inline]
105− pub fn new(key: u32) -> Self {
106− debug_assert_ne!(key, u32::MAX);
107− NodeKey(key)
108− }
109}
33}
110
34
111/// An event listener callback function.
35/// An event listener callback function.
@@ -115,7 +39,7 @@ impl NodeKey {
115/// 1. The virtual DOM's root rendering component.
39/// 1. The virtual DOM's root rendering component.
116/// 2. A capability to scheduler virtual DOM re-rendering.
40/// 2. A capability to scheduler virtual DOM re-rendering.
117/// 3. The event that occurred.
41/// 3. The event that occurred.
118−pub(crate) type ListenerCallback<'a> =
42+pub type ListenerCallback<'a> =
119 &'a (dyn Fn(&mut dyn RootRender, VdomWeak, web_sys::Event) + 'static);
43 &'a (dyn Fn(&mut dyn RootRender, VdomWeak, web_sys::Event) + 'static);
120
44
121/// An event listener.
45/// An event listener.
@@ -134,15 +58,6 @@ pub struct Attribute<'a> {
134 pub(crate) value: &'a str,
58 pub(crate) value: &'a str,
135}
59}
136
60
137−impl<'a> From<CachedNode> for Node<'a> {
138− #[inline]
139− fn from(c: CachedNode) -> Self {
140− Node {
141− kind: NodeKind::Cached(c),
142− }
143− }
144−}
145−
146impl fmt::Debug for Listener<'_> {
61impl fmt::Debug for Listener<'_> {
147 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
62 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
148 let (a, b) = self.get_callback_parts();
63 let (a, b) = self.get_callback_parts();
@@ -182,51 +97,59 @@ impl<'a> Attribute<'a> {
182}
97}
183
98
184impl<'a> Node<'a> {
99impl<'a> Node<'a> {
185− /// Low-level constructor for making a new `Node` of type element with given
100+ /// Construct a new Node of type element with given tag name and children
186− /// parts.
187− ///
188− /// This is primarily intended for JSX and templating proc-macros to compile
189− /// down into. If you are building nodes by-hand, prefer using the
190− /// `dodrio::builder::*` APIs.
191 #[inline]
101 #[inline]
192− pub fn element(
102+ pub(crate) fn element<Listeners, Attributes, Children>(
193 bump: &'a Bump,
103 bump: &'a Bump,
194− key: NodeKey,
195 tag_name: &'a str,
104 tag_name: &'a str,
196− listeners: &'a [Listener<'a>],
105+ listeners: Listeners,
197− attributes: &'a [Attribute<'a>],
106+ attributes: Attributes,
198− children: &'a [Node<'a>],
107+ children: Children,
199 namespace: Option<&'a str>,
108 namespace: Option<&'a str>,
200− ) -> Node<'a> {
109+ ) -> Node<'a>
201− let element = bump.alloc_with(|| ElementNode {
110+ where
202− key,
111+ Listeners: 'a + AsRef<[Listener<'a>]>,
112+ Attributes: 'a + AsRef<[Attribute<'a>]>,
113+ Children: 'a + AsRef<[Node<'a>]>,
114+ {
115+ let children: &'a Children = bump.alloc(children);
116+ let children: &'a [Node<'a>] = children.as_ref();
117+
118+ let listeners: &'a Listeners = bump.alloc(listeners);
119+ let listeners: &'a [Listener<'a>] = listeners.as_ref();
120+
121+ let attributes: &'a Attributes = bump.alloc(attributes);
122+ let attributes: &'a [Attribute<'a>] = attributes.as_ref();
123+
124+ Node::Element(ElementNode {
203 tag_name,
125 tag_name,
204 listeners,
126 listeners,
205 attributes,
127 attributes,
206 children,
128 children,
207 namespace,
129 namespace,
208− });
130+ })
131+ }
209
132
133+ /// Is this node a text node?
134+ pub fn is_text(&self) -> bool {
135+ match self {
210− Node {
136+ Node::Text(_) => true,
211− kind: NodeKind::Element(element),
137+ _ => false,
212 }
138 }
213 }
139 }
214
140
215− /// Construct a new text node with the given text.
141+ /// Is this node an element?
216− #[inline]
142+ pub fn is_element(&self) -> bool {
217− pub(crate) fn text(text: &'a str) -> Node<'a> {
143+ match self {
218− Node {
144+ Node::Element { .. } => true,
219− kind: NodeKind::Text(TextNode { text }),
145+ _ => false,
220 }
146 }
221 }
147 }
222
148
149+ /// Construct a new text node with the given text.
223 #[inline]
150 #[inline]
224− pub(crate) fn key(&self) -> NodeKey {
151+ pub(crate) fn text(text: &'a str) -> Node<'a> {
225− match &self.kind {
152+ Node::Text(TextNode { text })
226− NodeKind::Text(_) => NodeKey::NONE,
227− NodeKind::Element(e) => e.key,
228− NodeKind::Cached(c) => c.key,
229− }
230 }
153 }
231}
154}
232
155
@@ -246,6 +169,35 @@ impl<'a> IntoIterator for Node<'a> {
246 }
169 }
247}
170}
248
171
172+impl<'a> TextNode<'a> {
173+ /// Get this text node's text content.
174+ pub fn text(&self) -> &'a str {
175+ self.text
176+ }
177+}
178+
179+impl<'a> ElementNode<'a> {
180+ /// Get this element's tag name.
181+ pub fn tag_name(&self) -> &'a str {
182+ self.tag_name
183+ }
184+
185+ /// Get this element's attributes.
186+ pub fn attributes(&self) -> &'a [Attribute<'a>] {
187+ self.attributes
188+ }
189+
190+ /// Get this element's attributes.
191+ pub fn children(&self) -> &'a [Node<'a>] {
192+ self.children
193+ }
194+
195+ /// Get this element's namespace.
196+ pub fn namespace(&self) -> Option<&'a str> {
197+ self.namespace
198+ }
199+}
200+
249union CallbackFatPtr<'a> {
201union CallbackFatPtr<'a> {
250 callback: ListenerCallback<'a>,
202 callback: ListenerCallback<'a>,
251 parts: (u32, u32),
203 parts: (u32, u32),
src/render.rs+18−45
@@ -21,40 +21,40 @@ use wasm_bindgen::UnwrapThrowExt;
21///
21///
22/// pub struct MyComponent;
22/// pub struct MyComponent;
23///
23///
24−/// impl<'a> Render<'a> for MyComponent {
24+/// impl Render for MyComponent {
25−/// fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
25+/// fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
26/// use dodrio::builder::*;
26/// use dodrio::builder::*;
27///
27///
28−/// p(&cx)
28+/// p(cx.bump)
29/// .children([
29/// .children([
30/// text("This is "),
30/// text("This is "),
31−/// strong(&cx).children([text("my component")]).finish(),
31+/// strong(cx.bump).children([text("my component")]).finish(),
32/// text(" rendered!"),
32/// text(" rendered!"),
33/// ])
33/// ])
34/// .finish()
34/// .finish()
35/// }
35/// }
36/// }
36/// }
37/// ```
37/// ```
38−pub trait Render<'a> {
38+pub trait Render {
39 /// Render `self` as a virtual DOM. Use the given context's `Bump` for
39 /// Render `self` as a virtual DOM. Use the given context's `Bump` for
40 /// temporary allocations.
40 /// temporary allocations.
41− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a>;
41+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump>;
42}
42}
43
43
44−impl<'a, 'r, R> Render<'a> for &'r R
44+impl<'r, R> Render for &'r R
45where
45where
46− R: Render<'a>,
46+ R: Render,
47{
47{
48− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
48+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
49 (**self).render(cx)
49 (**self).render(cx)
50 }
50 }
51}
51}
52
52
53−impl<'a, R> Render<'a> for Rc<R>
53+impl<R> Render for Rc<R>
54where
54where
55− R: Render<'a>,
55+ R: Render,
56{
56{
57− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
57+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
58 (**self).render(cx)
58 (**self).render(cx)
59 }
59 }
60}
60}
@@ -69,24 +69,24 @@ where
69/// You do not need to implement this trait by hand: there is a blanket
69/// You do not need to implement this trait by hand: there is a blanket
70/// implementation for all `Render` types that fulfill the `RootRender`
70/// implementation for all `Render` types that fulfill the `RootRender`
71/// requirements.
71/// requirements.
72−pub trait RootRender: Any + for<'a> Render<'a> {
72+pub trait RootRender: Any + Render {
73 /// Get this `&RootRender` trait object as an `&Any` trait object reference.
73 /// Get this `&RootRender` trait object as an `&Any` trait object reference.
74− fn as_any(&self) -> &dyn Any;
74+ fn as_any(&self) -> &Any;
75
75
76 /// Get this `&mut RootRender` trait object as an `&mut Any` trait object
76 /// Get this `&mut RootRender` trait object as an `&mut Any` trait object
77 /// reference.
77 /// reference.
78− fn as_any_mut(&mut self) -> &mut dyn Any;
78+ fn as_any_mut(&mut self) -> &mut Any;
79}
79}
80
80
81impl<T> RootRender for T
81impl<T> RootRender for T
82where
82where
83− T: Any + for<'a> Render<'a>,
83+ T: Any + Render,
84{
84{
85− fn as_any(&self) -> &dyn Any {
85+ fn as_any(&self) -> &Any {
86 self
86 self
87 }
87 }
88
88
89− fn as_any_mut(&mut self) -> &mut dyn Any {
89+ fn as_any_mut(&mut self) -> &mut Any {
90 self
90 self
91 }
91 }
92}
92}
@@ -138,31 +138,4 @@ mod tests {
138 #[allow(dead_code)]
138 #[allow(dead_code)]
139 fn takes_dyn_render(_: &dyn super::RootRender) {}
139 fn takes_dyn_render(_: &dyn super::RootRender) {}
140 }
140 }
141−
142− #[test]
143− fn render_bump_scoped_child() {
144− use crate::{builder::*, bumpalo::collections::String, Node, Render, RenderContext};
145−
146− struct Child<'a> {
147− name: &'a str,
148− }
149−
150− impl<'a> Render<'a> for Child<'a> {
151− fn render(&self, _cx: &mut RenderContext<'a>) -> Node<'a> {
152− text(self.name)
153− }
154− }
155−
156− struct Parent;
157−
158− impl<'a> Render<'a> for Parent {
159− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
160− let child_name = String::from_str_in("child", cx.bump).into_bump_str();
161−
162− div(&cx)
163− .children([Child { name: child_name }.render(cx)])
164− .finish()
165− }
166− }
167− }
168}
141}
src/render_context.rs+13−79
@@ -1,17 +1,11 @@
1−use crate::{
2− cached::{Cached, TemplateId},
3− cached_set::{CacheId, CachedSet},
4− Node, Render,
5−};
6use bumpalo::Bump;
1use bumpalo::Bump;
7−use fxhash::FxHashMap;
8−use std::fmt;
9
2
10/// Common context available to all `Render` implementations.
3/// Common context available to all `Render` implementations.
11///
4///
12/// Notably, the `RenderContext` gives access to the bump arena that the virtual
5/// Notably, the `RenderContext` gives access to the bump arena that the virtual
13/// DOM should be allocated within. This is available via the `bump` field.
6/// DOM should be allocated within. This is available via the `bump` field.
7+#[derive(Debug)]
14−pub struct RenderContext<'a> {
8+pub struct RenderContext<'bump> {
15 /// The underlying bump arena that virtual DOMs are rendered into.
9 /// The underlying bump arena that virtual DOMs are rendered into.
16 ///
10 ///
17 /// ## Example
11 /// ## Example
@@ -24,81 +18,21 @@ pub struct RenderContext<'a> {
24 /// cx.bump.alloc(42)
18 /// cx.bump.alloc(42)
25 /// }
19 /// }
26 /// ```
20 /// ```
27− pub bump: &'a Bump,
21+ pub bump: &'bump Bump,
28
22
29− pub(crate) cached_set: &'a crate::RefCell<CachedSet>,
30−
31− pub(crate) templates: &'a mut FxHashMap<TemplateId, Option<CacheId>>,
32−
33− // Prevent exhaustive matching on the rendering context, so we can always
23+ // Prevent exhaustive matching on the rendering context, so we can add more
34− // add more members in a semver-compatible way.
24+ // members in a semver-compatible way.
35 _non_exhaustive: (),
25 _non_exhaustive: (),
36}
26}
37
27
38−impl fmt::Debug for RenderContext<'_> {
28+impl<'bump> RenderContext<'bump> {
39− fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
29+ // Don't use this! For internal use only! Subject to change in breaking ways
40− f.debug_struct("RenderContext")
30+ // without a breaking version bump!
41− .field("bump", &self.bump)
31+ #[doc(hidden)]
42− .finish()
43− }
44−}
45−
46−impl<'a> RenderContext<'a> {
47− pub_unstable_internal! {
48− pub(crate) fn new(
49− bump: &'a Bump,
32+ pub fn new(bump: &'bump Bump) -> Self {
50− cached_set: &'a crate::RefCell<CachedSet>,
51− templates: &'a mut FxHashMap<TemplateId, Option<CacheId>>
52− ) -> Self {
53− RenderContext {
33+ RenderContext {
54− bump,
34+ bump,
55− cached_set,
56− templates,
57− _non_exhaustive: (),
35+ _non_exhaustive: (),
58− }
59− }
60− }
61−
62− pub(crate) fn cache<F>(&mut self, pinned: bool, template: Option<CacheId>, f: F) -> CacheId
63− where
64− F: for<'b> FnOnce(&mut RenderContext<'b>) -> Node<'b>,
65− {
66− CachedSet::insert(self, pinned, template, f)
67− }
68−
69− /// Get or create the cached template for `Cached<R>`.
70− pub(crate) fn template<R>(&mut self) -> Option<CacheId>
71− where
72− R: 'static + Default + for<'b> Render<'b>,
73− {
74− let template_id = Cached::<R>::template_id();
75− if let Some(cache_id) = self.templates.get(&template_id).cloned() {
76− return cache_id;
77 }
36 }
78−
79− // Prevent re-entrancy from infinite looping. Any attempts to get `R`'s
80− // template while constructing the template will simply fail to use the
81− // templated fast path.
82− self.templates.insert(template_id, None);
83−
84− // Render the default `R` and save that as the template for all
85− // `Cached<R>`s.
86− let cache_id = self.cache(true, None, |nested_cx| R::default().render(nested_cx));
87− self.templates.insert(template_id, Some(cache_id));
88− Some(cache_id)
89− }
90−}
91−
92−impl<'a, 'b> From<&'b RenderContext<'a>> for &'a Bump {
93− #[inline]
94− fn from(cx: &'b RenderContext<'a>) -> &'a Bump {
95− cx.bump
96− }
97−}
98−
99−impl<'a, 'b, 'c> From<&'c &'b mut RenderContext<'a>> for &'a Bump {
100− #[inline]
101− fn from(cx: &'c &'b mut RenderContext<'a>) -> &'a Bump {
102− cx.bump
103 }
37 }
104}
38}
src/strace.rsdeleted−22
@@ -1,22 +0,0 @@
1−cfg_if::cfg_if! {
2− if #[cfg(feature = "xxx-unstable-strace")] {
3− use wasm_bindgen::prelude::*;
4−
5− #[wasm_bindgen(module = "/js/strace.js")]
6− extern "C" {
7− #[wasm_bindgen(js_name = initStrace)]
8− fn really_init_strace();
9− }
10−
11− pub fn init_strace() {
12− use std::sync::Once;
13− static STRACE: Once = Once::new();
14− STRACE.call_once(|| {
15− really_init_strace();
16− });
17− }
18− } else {
19− #[inline]
20− pub fn init_strace() {}
21− }
22−}
src/vdom.rs+326−136
@@ -1,16 +1,14 @@
1−use super::change_list::ChangeListPersistentState;
1+use super::change_list::ChangeList;
2+use super::node::{Attribute, ElementNode, Listener, Node, TextNode};
2use super::RootRender;
3use super::RootRender;
3−use crate::cached::TemplateId;
4−use crate::cached_set::{CacheId, CachedSet};
5use crate::events::EventsRegistry;
4use crate::events::EventsRegistry;
6−use crate::node::{Node, NodeKey};
7use crate::RenderContext;
5use crate::RenderContext;
8use bumpalo::Bump;
6use bumpalo::Bump;
9−use fxhash::FxHashMap;
7+use futures::future::Future;
10use std::cell::Cell;
8use std::cell::Cell;
11use std::cell::RefCell;
9use std::cell::RefCell;
10+use std::cmp;
12use std::fmt;
11use std::fmt;
13−use std::future::Future;
14use std::mem;
12use std::mem;
15use std::mem::ManuallyDrop;
13use std::mem::ManuallyDrop;
16use std::rc::{Rc, Weak};
14use std::rc::{Rc, Weak};
@@ -55,15 +53,12 @@ pub(crate) struct VdomInnerExclusive {
55 // Always `Some` except just before we drop. Just an option so that
53 // Always `Some` except just before we drop. Just an option so that
56 // `unmount` can take the component out but we can still have a Drop
54 // `unmount` can take the component out but we can still have a Drop
57 // implementation.
55 // implementation.
58− component: Option<Box<dyn RootRender>>,
56+ component: Option<Box<RootRender>>,
59
57
60− dom_buffers: Option<[Bump; 2]>,
58+ dom_buffers: [Bump; 2],
61− change_list: ManuallyDrop<ChangeListPersistentState>,
59+ change_list: ManuallyDrop<ChangeList>,
62 container: crate::Element,
60 container: crate::Element,
63 events_registry: Option<Rc<RefCell<EventsRegistry>>>,
61 events_registry: Option<Rc<RefCell<EventsRegistry>>>,
64− events_trampoline: Option<crate::EventsTrampoline>,
65− cached_set: crate::RefCell<CachedSet>,
66− templates: FxHashMap<TemplateId, Option<CacheId>>,
67
62
68 // Actually a reference into `self.dom_buffers[0]` or if `self.component` is
63 // Actually a reference into `self.dom_buffers[0]` or if `self.component` is
69 // caching renders, into `self.component`'s bump.
64 // caching renders, into `self.component`'s bump.
@@ -96,7 +91,6 @@ impl fmt::Debug for VdomInnerExclusive {
96 .field("change_list", &self.change_list)
91 .field("change_list", &self.change_list)
97 .field("container", &self.container)
92 .field("container", &self.container)
98 .field("events_registry", &self.events_registry)
93 .field("events_registry", &self.events_registry)
99− .field("events_trampoline", &"..")
100 .field("current_root", &self.current_root)
94 .field("current_root", &self.current_root)
101 .finish()
95 .finish()
102 }
96 }
@@ -121,7 +115,7 @@ impl Drop for VdomInnerExclusive {
121}
115}
122
116
123cfg_if::cfg_if! {
117cfg_if::cfg_if! {
124− if #[cfg(all(feature = "xxx-unstable-internal-use-only", not(target_arch = "wasm32")))] {
118+ if #[cfg(feature = "xxx-unstable-internal-use-only")] {
125 fn empty_container(_container: &crate::Element) {}
119 fn empty_container(_container: &crate::Element) {}
126 fn initialize_container(_container: &crate::Element) {}
120 fn initialize_container(_container: &crate::Element) {}
127 } else {
121 } else {
@@ -158,24 +152,21 @@ impl Vdom {
158 where
152 where
159 R: RootRender,
153 R: RootRender,
160 {
154 {
161− Self::with_boxed_root_render(container, Box::new(component) as Box<dyn RootRender>)
155+ Self::with_boxed_root_render(container, Box::new(component) as Box<RootRender>)
162 }
156 }
163
157
164 /// Construct a `Vdom` with the already-boxed-as-a-trait-object root
158 /// Construct a `Vdom` with the already-boxed-as-a-trait-object root
165 /// rendering component.
159 /// rendering component.
166− pub fn with_boxed_root_render(
160+ pub fn with_boxed_root_render<'a, 'bump>(
167 container: &crate::Element,
161 container: &crate::Element,
168− component: Box<dyn RootRender>,
162+ component: Box<RootRender>,
169 ) -> Vdom {
163 ) -> Vdom {
170− crate::strace::init_strace();
171−
172 let dom_buffers = [Bump::new(), Bump::new()];
164 let dom_buffers = [Bump::new(), Bump::new()];
173− let change_list = ManuallyDrop::new(ChangeListPersistentState::new(container));
165+ let change_list = ManuallyDrop::new(ChangeList::new(container));
174
166
175 // Create a dummy `<div/>` in our container.
167 // Create a dummy `<div/>` in our container.
176 initialize_container(container);
168 initialize_container(container);
177− let current_root =
178− Node::element(&dom_buffers[0], NodeKey::NONE, "div", &[], &[], &[], None);
169+ let current_root = Node::element(&dom_buffers[0], "div", [], [], [], None);
179 let current_root = Some(unsafe { extend_node_lifetime(current_root) });
170 let current_root = Some(unsafe { extend_node_lifetime(current_root) });
180
171
181 let container = container.clone();
172 let container = container.clone();
@@ -185,14 +176,11 @@ impl Vdom {
185 },
176 },
186 exclusive: RefCell::new(VdomInnerExclusive {
177 exclusive: RefCell::new(VdomInnerExclusive {
187 component: Some(component),
178 component: Some(component),
188− dom_buffers: Some(dom_buffers),
179+ dom_buffers,
189 change_list,
180 change_list,
190 container,
181 container,
191 current_root,
182 current_root,
192 events_registry: None,
183 events_registry: None,
193− events_trampoline: None,
194− cached_set: crate::RefCell::new(Default::default()),
195− templates: Default::default(),
196 }),
184 }),
197 });
185 });
198
186
@@ -201,9 +189,7 @@ impl Vdom {
201 {
189 {
202 let mut inner = inner.exclusive.borrow_mut();
190 let mut inner = inner.exclusive.borrow_mut();
203 inner.events_registry = Some(events_registry);
191 inner.events_registry = Some(events_registry);
204− inner.change_list.init_events_trampoline(&events_trampoline);
192+ inner.change_list.init_events_trampoline(events_trampoline);
205− debug_assert!(inner.events_trampoline.is_none());
206− inner.events_trampoline = Some(events_trampoline);
207
193
208 // Diff and apply the `contents` against our dummy `<div/>`.
194 // Diff and apply the `contents` against our dummy `<div/>`.
209 inner.render();
195 inner.render();
@@ -220,7 +206,7 @@ impl Vdom {
220 R: RootRender,
206 R: RootRender,
221 {
207 {
222 let mut exclusive = self.inner.exclusive.borrow_mut();
208 let mut exclusive = self.inner.exclusive.borrow_mut();
223− let component = Box::new(component) as Box<dyn RootRender>;
209+ let component = Box::new(component) as Box<RootRender>;
224 exclusive.component = Some(component);
210 exclusive.component = Some(component);
225 exclusive.render();
211 exclusive.render();
226 }
212 }
@@ -240,7 +226,7 @@ impl Vdom {
240 /// Unmount this virtual DOM, unregister its event listeners, and return its
226 /// Unmount this virtual DOM, unregister its event listeners, and return its
241 /// root render component.
227 /// root render component.
242 #[inline]
228 #[inline]
243− pub fn unmount(self) -> Box<dyn RootRender> {
229+ pub fn unmount(self) -> Box<RootRender> {
244 Rc::try_unwrap(self.inner.clone())
230 Rc::try_unwrap(self.inner.clone())
245 .map_err(|_| ())
231 .map_err(|_| ())
246 .unwrap_throw()
232 .unwrap_throw()
@@ -264,69 +250,273 @@ impl VdomInnerExclusive {
264 pub(crate) fn render(&mut self) {
250 pub(crate) fn render(&mut self) {
265 unsafe {
251 unsafe {
266 let events_registry = self.events_registry.take().unwrap();
252 let events_registry = self.events_registry.take().unwrap();
253+
267 {
254 {
255+ // All the old listeners are no longer active. We will build a new
256+ // set of active listeners when diffing.
257+ //
258+ // NB: if we end up avoiding diffing cached renders (instead of just
259+ // avoiding re-rendering them) then we will need to maintain cached
260+ // active listeners, and can't just clear all active listeners and
261+ // rebuild them here.
268 let mut registry = events_registry.borrow_mut();
262 let mut registry = events_registry.borrow_mut();
263+ registry.clear_active_listeners();
269
264
270 // Reset the inactive bump arena's pointer.
265 // Reset the inactive bump arena's pointer.
271− let mut dom_buffers = self.dom_buffers.take().unwrap_throw();
272− dom_buffers[1].reset();
266+ self.dom_buffers[1].reset();
273
267
274 // Render the new current contents into the inactive bump arena.
268 // Render the new current contents into the inactive bump arena.
275− let mut cx =
276− RenderContext::new(&dom_buffers[1], &self.cached_set, &mut self.templates);
269+ let mut cx = RenderContext::new(&self.dom_buffers[1]);
277 let new_contents = self.component.as_ref().unwrap_throw().render(&mut cx);
270 let new_contents = self.component.as_ref().unwrap_throw().render(&mut cx);
278 let new_contents = extend_node_lifetime(new_contents);
271 let new_contents = extend_node_lifetime(new_contents);
279
272
280 // Diff the old contents with the new contents.
273 // Diff the old contents with the new contents.
281 let old_contents = self.current_root.take().unwrap();
274 let old_contents = self.current_root.take().unwrap();
282− let mut cache_roots;
283− {
284− let cached_set = self.cached_set.borrow();
285− cache_roots = cached_set.new_roots_set();
286− let mut change_list = self.change_list.builder();
287− crate::diff::diff(
288− &cached_set,
289− &mut change_list,
290− &mut registry,
291− &old_contents,
275+ self.diff(&mut registry, old_contents, new_contents.clone());
292− &new_contents,
293− &mut cache_roots,
294− );
295−
296− // Tell JS to apply our diff-generated changes to the physical DOM!
297− change_list.finish();
298− }
299−
300− {
301− // Clean up unused cached renders.
302− let mut cached_set = self.cached_set.borrow_mut();
303− cached_set.gc(&mut registry, cache_roots);
304− }
305
276
306 // Swap the buffers to make the bump arena with the new contents the
277 // Swap the buffers to make the bump arena with the new contents the
307 // active arena, and the old one into the inactive arena.
278 // active arena, and the old one into the inactive arena.
308− self.swap_buffers(dom_buffers);
279+ self.swap_buffers();
309 self.set_current_root(new_contents);
280 self.set_current_root(new_contents);
310 }
281 }
311
282
312 self.events_registry = Some(events_registry);
283 self.events_registry = Some(events_registry);
284+
285+ // Find and drop cached strings that aren't in use anymore.
286+ self.change_list.drop_unused_strings();
287+
288+ // Tell JS to apply our diff-generated changes to the physical DOM!
289+ self.change_list.apply_changes();
313 }
290 }
314 }
291 }
315
292
316− fn swap_buffers(&mut self, mut dom_buffers: [Bump; 2]) {
293+ fn swap_buffers(&mut self) {
317− debug_assert!(self.dom_buffers.is_none());
318− let (first, second) = dom_buffers.as_mut().split_at_mut(1);
294+ let (first, second) = self.dom_buffers.as_mut().split_at_mut(1);
319 mem::swap(&mut first[0], &mut second[0]);
295 mem::swap(&mut first[0], &mut second[0]);
320− self.dom_buffers = Some(dom_buffers);
321 }
296 }
322
297
323 unsafe fn set_current_root(&mut self, current: Node<'static>) {
298 unsafe fn set_current_root(&mut self, current: Node<'static>) {
324 debug_assert!(self.current_root.is_none());
299 debug_assert!(self.current_root.is_none());
325 self.current_root = Some(current);
300 self.current_root = Some(current);
326 }
301 }
302+
303+ fn diff<'a>(&mut self, registry: &mut EventsRegistry, old: Node<'a>, new: Node<'a>) {
304+ match (&new, old) {
305+ (&Node::Text(TextNode { text: new_text }), Node::Text(TextNode { text: old_text })) => {
306+ debug!(" both are text nodes");
307+ if new_text != old_text {
308+ debug!(" text needs updating");
309+ self.change_list.emit_set_text(new_text);
310+ }
311+ }
312+ (&Node::Text(_), Node::Element(_)) => {
313+ debug!(" replacing a text node with an element");
314+ self.create(registry, new);
315+ self.change_list.emit_replace_with();
316+ }
317+ (&Node::Element(_), Node::Text(_)) => {
318+ debug!(" replacing an element with a text node");
319+ self.create(registry, new);
320+ self.change_list.emit_replace_with();
321+ }
322+ (
323+ &Node::Element(ElementNode {
324+ tag_name: new_tag_name,
325+ listeners: new_listeners,
326+ attributes: new_attributes,
327+ children: new_children,
328+ namespace: new_namespace,
329+ }),
330+ Node::Element(ElementNode {
331+ tag_name: old_tag_name,
332+ listeners: old_listeners,
333+ attributes: old_attributes,
334+ children: old_children,
335+ namespace: old_namespace,
336+ }),
337+ ) => {
338+ debug!(" updating an element");
339+ if new_tag_name != old_tag_name || new_namespace != old_namespace {
340+ debug!(" different tag names or namespaces; creating new element and replacing old element");
341+ self.create(registry, new);
342+ self.change_list.emit_replace_with();
343+ return;
344+ }
345+ self.diff_listeners(registry, old_listeners, new_listeners);
346+ self.diff_attributes(old_attributes, new_attributes);
347+ self.diff_children(registry, old_children, new_children);
348+ }
349+ }
350+ }
351+
352+ fn diff_listeners<'a>(
353+ &mut self,
354+ registry: &mut EventsRegistry,
355+ old: &'a [Listener<'a>],
356+ new: &'a [Listener<'a>],
357+ ) {
358+ debug!(" updating event listeners");
359+
360+ 'outer1: for new_l in new {
361+ unsafe {
362+ // Safety relies on removing `new_l` from the registry manually
363+ // at the end of its lifetime. This happens when we invoke
364+ // `clear_active_listeners` at the start of a new rendering
365+ // phase.
366+ registry.add(new_l);
367+ }
368+ for old_l in old {
369+ if new_l.event == old_l.event {
370+ self.change_list.emit_update_event_listener(new_l);
371+ continue 'outer1;
372+ }
373+ }
374+ self.change_list.emit_new_event_listener(new_l);
375+ }
376+
377+ 'outer2: for old_l in old {
378+ for new_l in new {
379+ if new_l.event == old_l.event {
380+ continue 'outer2;
381+ }
382+ }
383+ self.change_list.emit_remove_event_listener(old_l.event);
384+ }
385+ }
386+
387+ fn diff_attributes(&mut self, old: &[Attribute], new: &[Attribute]) {
388+ debug!(" updating attributes");
389+
390+ // Do O(n^2) passes to add/update and remove attributes, since
391+ // there are almost always very few attributes.
392+ 'outer: for new_attr in new {
393+ if new_attr.is_volatile() {
394+ self.change_list
395+ .emit_set_attribute(new_attr.name, new_attr.value);
396+ } else {
397+ for old_attr in old {
398+ if old_attr.name == new_attr.name {
399+ if old_attr.value != new_attr.value {
400+ self.change_list
401+ .emit_set_attribute(new_attr.name, new_attr.value);
402+ }
403+ continue 'outer;
404+ }
405+ }
406+ self.change_list
407+ .emit_set_attribute(new_attr.name, new_attr.value);
408+ }
409+ }
410+
411+ 'outer2: for old_attr in old {
412+ for new_attr in new {
413+ if old_attr.name == new_attr.name {
414+ continue 'outer2;
415+ }
416+ }
417+ self.change_list.emit_remove_attribute(old_attr.name);
418+ }
419+ }
420+
421+ fn diff_children<'a>(
422+ &mut self,
423+ registry: &mut EventsRegistry,
424+ old: &'a [Node<'a>],
425+ new: &'a [Node<'a>],
426+ ) {
427+ debug!(" updating children shared by old and new");
428+
429+ let num_children_to_diff = cmp::min(new.len(), old.len());
430+ let mut new_children = new.iter();
431+ let mut old_children = old.iter();
432+ let mut pushed = false;
433+
434+ for (i, (new_child, old_child)) in new_children
435+ .by_ref()
436+ .zip(old_children.by_ref())
437+ .take(num_children_to_diff)
438+ .enumerate()
439+ {
440+ if i == 0 {
441+ self.change_list.emit_push_first_child();
442+ pushed = true;
443+ } else {
444+ debug_assert!(pushed);
445+ self.change_list.emit_pop_push_next_sibling();
446+ }
447+
448+ self.diff(registry, old_child.clone(), new_child.clone());
449+ }
450+
451+ if old_children.next().is_some() {
452+ debug!(" removing extra old children");
453+ debug_assert!(new_children.next().is_none());
454+ if !pushed {
455+ self.change_list.emit_push_first_child();
456+ } else {
457+ self.change_list.emit_pop_push_next_sibling();
458+ }
459+ self.change_list.emit_remove_self_and_next_siblings();
460+ pushed = false;
461+ } else {
462+ debug!(" creating new children");
463+ for (i, new_child) in new_children.enumerate() {
464+ if i == 0 && pushed {
465+ self.change_list.emit_pop();
466+ pushed = false;
467+ }
468+ self.create(registry, new_child.clone());
469+ self.change_list.emit_append_child();
470+ }
471+ }
472+
473+ debug!(" done updating children");
474+ if pushed {
475+ self.change_list.emit_pop();
476+ }
477+ }
478+
479+ fn create<'a>(&mut self, registry: &mut EventsRegistry, node: Node<'a>) {
480+ match node {
481+ Node::Text(TextNode { text }) => {
482+ self.change_list.emit_create_text_node(text);
483+ }
484+ Node::Element(ElementNode {
485+ tag_name,
486+ listeners,
487+ attributes,
488+ children,
489+ namespace,
490+ }) => {
491+ if let Some(namespace) = namespace {
492+ self.change_list.emit_create_element_ns(tag_name, namespace);
493+ } else {
494+ self.change_list.emit_create_element(tag_name);
495+ }
496+ for l in listeners {
497+ unsafe {
498+ registry.add(l);
499+ }
500+ self.change_list.emit_new_event_listener(l);
501+ }
502+ for attr in attributes {
503+ if namespace.is_none() || attr.name.starts_with("xmlns") {
504+ self.change_list.emit_set_attribute(&attr.name, &attr.value);
505+ } else {
506+ self.change_list
507+ .emit_set_attribute_ns(&attr.name, &attr.value);
508+ }
509+ }
510+ for child in children {
511+ self.create(registry, child.clone());
512+ self.change_list.emit_append_child();
513+ }
514+ }
515+ }
516+ }
327}
517}
328
518
329−fn request_animation_frame(f: &Closure<dyn FnMut()>) {
519+fn request_animation_frame(f: &Closure<FnMut()>) {
330 web_sys::window()
520 web_sys::window()
331 .expect_throw("should have a window")
521 .expect_throw("should have a window")
332 .request_animation_frame(f.as_ref().unchecked_ref())
522 .request_animation_frame(f.as_ref().unchecked_ref())
@@ -343,7 +533,7 @@ where
343 let f = Closure::wrap(Box::new(move || {
533 let f = Closure::wrap(Box::new(move || {
344 *g.borrow_mut() = None;
534 *g.borrow_mut() = None;
345 f();
535 f();
346− }) as Box<dyn FnMut()>);
536+ }) as Box<FnMut()>);
347 request_animation_frame(&f);
537 request_animation_frame(&f);
348
538
349 *h.borrow_mut() = Some(f);
539 *h.borrow_mut() = Some(f);
@@ -374,23 +564,25 @@ impl VdomWeak {
374 /// Replace the root rendering component with the new `root`.
564 /// Replace the root rendering component with the new `root`.
375 ///
565 ///
376 /// Returns a future that resolves to the *old* root component.
566 /// Returns a future that resolves to the *old* root component.
377− pub async fn set_component(
567+ pub fn set_component(
378 self,
568 self,
379 root: Box<dyn RootRender>,
569 root: Box<dyn RootRender>,
380− ) -> Result<Box<dyn RootRender + 'static>, VdomDroppedError> {
570+ ) -> impl Future<Item = Box<dyn RootRender + 'static>, Error = VdomDroppedError> {
571+ futures::future::ok(self.inner.upgrade())
572+ .and_then(|inner| inner.ok_or(()))
381− let inner = self.inner.upgrade().ok_or(VdomDroppedError {})?;
573+ .map_err(|_| VdomDroppedError {})
382−
574+ .and_then(|inner| {
383− // Wait for a new tick of the micro-task queue
384− let _ = JsFuture::from(js_sys::Promise::resolve(&JsValue::null())).await;
575+ let promise = js_sys::Promise::resolve(&JsValue::null());
385−
576+ JsFuture::from(promise)
577+ .map_err(|_| VdomDroppedError {})
578+ .and_then(move |_| {
386− let old = {
579+ let old = {
387− let mut exclusive = inner.exclusive.borrow_mut();
580+ let mut exclusive = inner.exclusive.borrow_mut();
388− mem::replace(&mut *exclusive.component.as_mut().unwrap_throw(), root)
581+ mem::replace(&mut *exclusive.component.as_mut().unwrap_throw(), root)
389− };
582+ };
390−
391− VdomWeak::new(&inner).render().await?;
583+ VdomWeak::new(&inner).render().map(|_| old)
392−
584+ })
393− Ok(old)
585+ })
394 }
586 }
395
587
396 /// Execute `f` with a reference to this virtual DOM's root rendering
588 /// Execute `f` with a reference to this virtual DOM's root rendering
@@ -398,18 +590,24 @@ impl VdomWeak {
398 ///
590 ///
399 /// To ensure exclusive access to the root rendering component, the
591 /// To ensure exclusive access to the root rendering component, the
400 /// invocation takes place on a new tick of the micro-task queue.
592 /// invocation takes place on a new tick of the micro-task queue.
401− pub async fn with_component<F, T>(&self, f: F) -> Result<T, VdomDroppedError>
593+ pub fn with_component<F, T>(&self, f: F) -> impl Future<Item = T, Error = VdomDroppedError>
402 where
594 where
403 F: 'static + FnOnce(&mut dyn RootRender) -> T,
595 F: 'static + FnOnce(&mut dyn RootRender) -> T,
404 {
596 {
597+ futures::future::ok(self.inner.upgrade())
598+ .and_then(|inner| inner.ok_or(()))
405− let inner = self.inner.upgrade().ok_or(VdomDroppedError {})?;
599+ .map_err(|_| VdomDroppedError {})
406−
600+ .and_then(|inner| {
407− // Wait for a new tick of the micro-task queue
601+ let mut f = Some(f);
408− let _ = JsFuture::from(js_sys::Promise::resolve(&JsValue::null())).await;
602+ let promise = js_sys::Promise::resolve(&JsValue::null());
409−
603+ JsFuture::from(promise)
604+ .map_err(|_| VdomDroppedError {})
605+ .map(move |_| {
606+ let f = f.take().unwrap_throw();
410− let mut exclusive = inner.exclusive.borrow_mut();
607+ let mut exclusive = inner.exclusive.borrow_mut();
411−
412− Ok(f(exclusive.component_raw_mut()))
608+ f(exclusive.component_raw_mut())
609+ })
610+ })
413 }
611 }
414
612
415 /// Schedule a render to occur during the next animation frame.
613 /// Schedule a render to occur during the next animation frame.
@@ -418,12 +616,7 @@ impl VdomWeak {
418 /// `render` instead.
616 /// `render` instead.
419 pub fn schedule_render(&self) {
617 pub fn schedule_render(&self) {
420 debug!("VdomWeak::schedule_render");
618 debug!("VdomWeak::schedule_render");
421−
422− let future = self.render();
423−
424− wasm_bindgen_futures::spawn_local(async move {
619+ wasm_bindgen_futures::spawn_local(self.render().map_err(|_| ()));
425− let _ = future.await;
426− });
427 }
620 }
428
621
429 /// Schedule a render to occur during the next animation frame and return a
622 /// Schedule a render to occur during the next animation frame and return a
@@ -431,46 +624,43 @@ impl VdomWeak {
431 ///
624 ///
432 /// If you don't want to do more things after the render completes, then use
625 /// If you don't want to do more things after the render completes, then use
433 /// `schedule_render` instead of `render`.
626 /// `schedule_render` instead of `render`.
434− pub fn render(&self) -> impl Future<Output = Result<(), VdomDroppedError>> {
627+ pub fn render(&self) -> impl Future<Item = (), Error = VdomDroppedError> {
628+ debug!("VdomWeak::render: initiating render in new animation frame");
435− let inner = self.inner.upgrade();
629+ futures::future::ok(self.inner.upgrade())
436−
630+ .and_then(|inner| inner.ok_or(()))
437− async move {
438− let inner = inner.ok_or(VdomDroppedError {})?;
631+ .map_err(|_| VdomDroppedError {})
439−
632+ .and_then(|inner| {
440− let promise = inner.shared.render_scheduled.take().unwrap_or_else(|| {
633+ let promise = inner.shared.render_scheduled.take().unwrap_or_else(|| {
441− js_sys::Promise::new(&mut |resolve, reject| {
634+ js_sys::Promise::new(&mut |resolve, reject| {
442− let vdom = VdomWeak {
635+ let vdom = VdomWeak {
443− inner: Rc::downgrade(&inner),
636+ inner: Rc::downgrade(&inner),
444− };
637+ };
445−
446− with_animation_frame(move || match vdom.inner.upgrade() {
638+ with_animation_frame(move || match vdom.inner.upgrade() {
447− None => {
639+ None => {
448− warn!("VdomWeak::render: vdom unmounted before we could render");
640+ warn!("VdomWeak::render: vdom unmounted before we could render");
449− let r = reject.call0(&JsValue::null());
641+ let r = reject.call0(&JsValue::null());
450− debug_assert!(r.is_ok());
642+ debug_assert!(r.is_ok());
451− }
643+ }
452− Some(inner) => {
644+ Some(inner) => {
453− let mut exclusive = inner.exclusive.borrow_mut();
645+ let mut exclusive = inner.exclusive.borrow_mut();
454− exclusive.render();
646+ exclusive.render();
455−
647+
456− // We did the render, so take the promise away
648+ // We did the render, so take the promise away
457− // and let future `render` calls request new
649+ // and let future `render` calls request new
458− // animation frames.
650+ // animation frames.
459− let _ = inner.shared.render_scheduled.take();
651+ let _ = inner.shared.render_scheduled.take();
460−
652+
653+ debug!("VdomWeak::render: finished rendering");
461− let r = resolve.call0(&JsValue::null());
654+ let r = resolve.call0(&JsValue::null());
462− debug_assert!(r.is_ok());
655+ debug_assert!(r.is_ok());
463− }
656+ }
464− });
657+ });
465− })
658+ })
466− });
659+ });
467−
468− inner.shared.render_scheduled.set(Some(promise.clone()));
660+ inner.shared.render_scheduled.set(Some(promise.clone()));
469−
470− JsFuture::from(promise)
661+ JsFuture::from(promise)
471− .await
472− .map(drop)
662+ .map(|_| ())
473− .map_err(|_| VdomDroppedError {})
663+ .map_err(|_| VdomDroppedError {})
474− }
664+ })
475 }
665 }
476}
666}
tests/web/cached.jsdeleted−11
@@ -1,11 +0,0 @@
1−let cloneNodeCount = 0;
2−
3−const origCloneNode = Node.prototype.cloneNode;
4−Node.prototype.cloneNode = function (...args) {
5− cloneNodeCount += 1;
6− return origCloneNode.apply(this, args);
7−};
8−
9−export function getCloneNodeCount() {
10− return cloneNodeCount;
11−}
tests/web/cached.rsdeleted−289
@@ -1,289 +0,0 @@
1−use super::{assert_rendered, before_after, create_element, RenderFn};
2−use dodrio::{builder::*, bumpalo, Cached, Node, Render, RenderContext, RootRender, Vdom};
3−use std::cell::Cell;
4−use std::rc::Rc;
5−use wasm_bindgen::prelude::*;
6−use wasm_bindgen_test::*;
7−
8−#[derive(Default)]
9−pub struct CountRenders {
10− render_count: Cell<usize>,
11−}
12−
13−impl CountRenders {
14− pub fn new() -> CountRenders {
15− CountRenders {
16− render_count: Cell::new(0),
17− }
18− }
19−}
20−
21−impl<'a> Render<'a> for CountRenders {
22− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
23− let count = self.render_count.get() + 1;
24− self.render_count.set(count);
25−
26− let s = bumpalo::format!(in cx.bump, "{}", count);
27− text(s.into_bump_str())
28− }
29−}
30−
31−#[wasm_bindgen_test]
32−async fn uses_cached_render() {
33− use dodrio::builder::*;
34−
35− let cached = Cached::new(CountRenders::new());
36−
37− let container0 = create_element("div");
38− let container1 = container0.clone();
39− let container2 = container0.clone();
40− let container3 = container0.clone();
41− let container4 = container0.clone();
42−
43− let vdom0 = Rc::new(Vdom::new(&container0, cached));
44− let vdom1 = vdom0.clone();
45− let vdom2 = vdom0.clone();
46− let vdom3 = vdom0.clone();
47− let vdom4 = vdom0.clone();
48− let vdom5 = vdom0.clone();
49− let vdom6 = vdom0.clone();
50− let vdom7 = vdom0.clone();
51−
52− // We render, populate the cache, and get "1".
53− vdom0.weak().render().await.unwrap();
54− vdom0
55− .weak()
56− .with_component(move |comp| {
57− let comp = comp.unwrap_mut::<Cached<CountRenders>>();
58− assert_eq!(comp.render_count.get(), 1);
59− assert_rendered(&container1, &RenderFn(|_| text("1")));
60− })
61− .await
62− .unwrap();
63−
64− // We re-render, re-use the cached node, and get "1" again.
65− vdom1.weak().render().await.unwrap();
66− vdom2
67− .weak()
68− .with_component(move |comp| {
69− let comp = comp.unwrap_mut::<Cached<CountRenders>>();
70− assert_eq!(comp.render_count.get(), 1);
71− assert_rendered(&container2, &RenderFn(|_| text("1")));
72− })
73− .await
74− .unwrap();
75−
76− // We invalidate the cache, re-render, re-populate the cache, and should now have "2".
77− vdom3
78− .weak()
79− .with_component(move |comp| {
80− let comp = comp.unwrap_mut::<Cached<CountRenders>>();
81− Cached::invalidate(comp);
82− })
83− .await
84− .unwrap();
85− vdom4.weak().render().await.unwrap();
86− vdom5
87− .weak()
88− .with_component(move |comp| {
89− let comp = comp.unwrap_mut::<Cached<CountRenders>>();
90− assert_eq!(comp.render_count.get(), 2);
91− assert_rendered(&container3, &RenderFn(|_| text("2")));
92− })
93− .await
94− .unwrap();
95−
96− // We re-render, re-use the cached node, and get "2" again.
97− vdom6.weak().render().await.unwrap();
98− vdom7
99− .weak()
100− .with_component(move |comp| {
101− let comp = comp.unwrap_mut::<Cached<CountRenders>>();
102− assert_eq!(comp.render_count.get(), 2);
103− assert_rendered(&container4, &RenderFn(|_| text("2")));
104− })
105− .await
106− .unwrap();
107−}
108−
109−#[wasm_bindgen(module = "/tests/web/cached.js")]
110−extern "C" {
111− #[wasm_bindgen(js_name = getCloneNodeCount)]
112− fn get_clone_node_count() -> u32;
113−}
114−
115−#[wasm_bindgen_test]
116−async fn creating_cached_nodes_uses_clone_node() {
117− use dodrio::builder::*;
118−
119− let container = create_element("div");
120−
121− // The initial vdom render should populate the cache and save a template.
122− let vdom0 = Rc::new(Vdom::new(&container, Cached::new(CountRenders::new())));
123− let vdom1 = vdom0.clone();
124− let _vdom2 = vdom0.clone();
125−
126− let clone_node_count_before = get_clone_node_count();
127−
128− // Render something entirely different...
129− vdom0
130− .weak()
131− .set_component(Box::new(RenderFn(|_| text("hi"))) as Box<dyn RootRender>)
132− .await
133− .unwrap();
134−
135− // Re-render our cached node. Since we are creating it from scratch,
136− // and already have a template from the earlier render, we should
137− // call `cloneNode` here.
138− vdom1
139− .weak()
140− .set_component(Box::new(Cached::new(CountRenders::new())) as Box<dyn RootRender>)
141− .await
142− .unwrap();
143−
144− let clone_node_count_after = get_clone_node_count();
145− assert_eq!(clone_node_count_after, clone_node_count_before + 1);
146−}
147−
148−struct Id(&'static str);
149−
150−impl Default for Id {
151− fn default() -> Id {
152− Id("")
153− }
154−}
155−
156−impl<'a> Render<'a> for Id {
157− fn render(&self, _cx: &mut RenderContext<'a>) -> Node<'a> {
158− text(self.0)
159− }
160−}
161−
162−thread_local! {
163− static WARM_CHEESE: Rc<Cached<Id>> = Rc::new(Cached::new(Id("cheese")));
164− static WARM_CHEESIER: Rc<Cached<Id>> = Rc::new(Cached::new(Id("cheesier")));
165−}
166−
167−fn warm_cheese<'a>(cx: &mut RenderContext<'a>) -> Node<'a> {
168− WARM_CHEESE.with(|c| {
169− let _ = c.render(cx);
170− c.render(cx)
171− })
172−}
173−
174−fn warm_cheesier<'a>(cx: &mut RenderContext<'a>) -> Node<'a> {
175− WARM_CHEESIER.with(|c| {
176− let _ = c.render(cx);
177− c.render(cx)
178− })
179−}
180−
181−before_after! {
182− cold_cache_and_not_cached {
183− before(cx) {
184− Cached::new(Id("cheese")).render(cx)
185− }
186− after(cx) {
187− Id("ravioli").render(cx)
188− }
189− }
190−
191− not_cached_and_cold_cache {
192− before(cx) {
193− Id("ravioli").render(cx)
194− }
195− after(cx) {
196− Cached::new(Id("cheese")).render(cx)
197− }
198− }
199−
200− cold_cache_and_cold_cache_same {
201− before(cx) {
202− Cached::new(Id("cheese")).render(cx)
203− }
204− after(cx) {
205− Cached::new(Id("cheese")).render(cx)
206− }
207− }
208−
209− cold_cache_and_cold_cache_different {
210− before(cx) {
211− Cached::new(Id("cheese")).render(cx)
212− }
213− after(cx) {
214− Cached::new(Id("ravioli")).render(cx)
215− }
216− }
217−
218− warm_cache_and_not_cached {
219− before(cx) {
220− warm_cheese(cx)
221− }
222− after(cx) {
223− Id("ravioli").render(cx)
224− }
225− }
226−
227− not_cached_and_warm_cache {
228− before(cx) {
229− Id("ravioli").render(cx)
230− }
231− after(cx) {
232− warm_cheese(cx)
233− }
234− }
235−
236− warm_cache_and_warm_cache_same {
237− before(cx) {
238− warm_cheese(cx)
239− }
240− after(cx) {
241− warm_cheese(cx)
242− }
243− }
244−
245− warm_cache_and_warm_cache_different {
246− before(cx) {
247− warm_cheese(cx)
248− }
249− after(cx) {
250− warm_cheesier(cx)
251− }
252− }
253−
254− cold_cache_and_warm_cache_same {
255− before(cx) {
256− Cached::new(Id("cheese")).render(cx)
257− }
258− after(cx) {
259− warm_cheese(cx)
260− }
261− }
262−
263− cold_cache_and_warm_cache_different {
264− before(cx) {
265− Cached::new(Id("cheese")).render(cx)
266− }
267− after(cx) {
268− warm_cheesier(cx)
269− }
270− }
271−
272− warm_cache_and_cold_cache_same {
273− before(cx) {
274− warm_cheese(cx)
275− }
276− after(cx) {
277− Cached::new(Id("cheese")).render(cx)
278− }
279− }
280−
281− warm_cache_and_cold_cache_different {
282− before(cx) {
283− warm_cheesier(cx)
284− }
285− after(cx) {
286− Cached::new(Id("cheese")).render(cx)
287− }
288− }
289−}
tests/web/events.rs+75−58
@@ -1,6 +1,6 @@
1use super::create_element;
1use super::create_element;
2use dodrio::{Node, Render, RenderContext, Vdom};
2use dodrio::{Node, Render, RenderContext, Vdom};
3−use futures::future::{select, Either};
3+use futures::Future;
4use std::cell::{Cell, RefCell};
4use std::cell::{Cell, RefCell};
5use std::rc::Rc;
5use std::rc::Rc;
6use wasm_bindgen::prelude::*;
6use wasm_bindgen::prelude::*;
@@ -9,7 +9,7 @@ use wasm_bindgen_test::*;
9
9
10struct EventContainer {
10struct EventContainer {
11 event: &'static str,
11 event: &'static str,
12− on_event: Box<dyn FnMut()>,
12+ on_event: Box<FnMut()>,
13}
13}
14
14
15impl EventContainer {
15impl EventContainer {
@@ -24,10 +24,10 @@ impl EventContainer {
24 }
24 }
25}
25}
26
26
27−impl<'a> Render<'a> for EventContainer {
27+impl Render for EventContainer {
28− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
28+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
29 use dodrio::builder::*;
29 use dodrio::builder::*;
30− div(&cx)
30+ div(cx.bump)
31 .attr("id", "target")
31 .attr("id", "target")
32 .on(self.event, |root, _scheduler, _event| {
32 .on(self.event, |root, _scheduler, _event| {
33 (root.unwrap_mut::<EventContainer>().on_event)();
33 (root.unwrap_mut::<EventContainer>().on_event)();
@@ -44,14 +44,14 @@ fn target(container: &web_sys::Element) -> web_sys::HtmlElement {
44 .unchecked_into()
44 .unchecked_into()
45}
45}
46
46
47−#[wasm_bindgen_test]
47+#[wasm_bindgen_test(async)]
48−async fn click() {
48+fn click() -> impl Future<Item = (), Error = JsValue> {
49 let container = create_element("div");
49 let container = create_element("div");
50
50
51− let (sender, receiver) = futures::channel::oneshot::channel();
51+ let (sender, receiver) = futures::sync::oneshot::channel();
52 let mut sender = Some(sender);
52 let mut sender = Some(sender);
53
53
54− let _vdom = Vdom::new(
54+ let vdom = Vdom::new(
55 &container,
55 &container,
56 EventContainer::new("click", move || {
56 EventContainer::new("click", move || {
57 sender
57 sender
@@ -64,14 +64,18 @@ async fn click() {
64
64
65 target(&container).click();
65 target(&container).click();
66
66
67− receiver.await.unwrap();
67+ receiver
68+ .map(|_| {
69+ drop(vdom);
70+ })
71+ .map_err(|e| JsValue::from(e.to_string()))
68}
72}
69
73
70−#[wasm_bindgen_test]
74+#[wasm_bindgen_test(async)]
71−async fn updated_listener_is_called() {
75+fn updated_listener_is_called() -> impl Future<Item = (), Error = JsValue> {
72 let container = create_element("div");
76 let container = create_element("div");
73
77
74− let (first_sender, first_receiver) = futures::channel::oneshot::channel();
78+ let (first_sender, first_receiver) = futures::sync::oneshot::channel();
75 let mut first_sender = Some(first_sender);
79 let mut first_sender = Some(first_sender);
76
80
77 let vdom = Vdom::new(
81 let vdom = Vdom::new(
@@ -85,7 +89,7 @@ async fn updated_listener_is_called() {
85 }),
89 }),
86 );
90 );
87
91
88− let (second_sender, second_receiver) = futures::channel::oneshot::channel();
92+ let (second_sender, second_receiver) = futures::sync::oneshot::channel();
89 let mut second_sender = Some(second_sender);
93 let mut second_sender = Some(second_sender);
90
94
91 vdom.weak()
95 vdom.weak()
@@ -96,22 +100,25 @@ async fn updated_listener_is_called() {
96 .send("second")
100 .send("second")
97 .expect_throw("should not have dropped the receiver");
101 .expect_throw("should not have dropped the receiver");
98 })))
102 })))
99− .await
103+ .map_err(|e| JsValue::from(e.to_string()))
100− .unwrap();
104+ .and_then(move |_| {
101−
102− target(&container).click();
105+ target(&container).click();
103−
106+
107+ first_receiver
104− match select(first_receiver, second_receiver).await {
108+ .select(second_receiver)
105− Either::Left((Ok(_), _)) => panic!(),
109+ .map(|(which, _other)| which)
110+ .or_else(|(_error, other)| other)
111+ .map(|which| {
106− Either::Left((Err(_), second)) => assert_eq!(second.await, Ok("second")),
112+ assert_eq!(which, "second");
107− Either::Right((Ok(msg), _)) => assert_eq!(msg, "second"),
113+ drop(vdom);
108− Either::Right((Err(_), _)) => panic!(),
114+ })
115+ .map_err(|e| JsValue::from(e.to_string()))
109− }
116+ })
110}
117}
111
118
112struct ListensOnlyOnFirstRender {
119struct ListensOnlyOnFirstRender {
113 count: Cell<usize>,
120 count: Cell<usize>,
114− callback: Box<dyn FnMut()>,
121+ callback: Box<FnMut()>,
115}
122}
116
123
117impl ListensOnlyOnFirstRender {
124impl ListensOnlyOnFirstRender {
@@ -126,14 +133,14 @@ impl ListensOnlyOnFirstRender {
126 }
133 }
127}
134}
128
135
129−impl<'a> Render<'a> for ListensOnlyOnFirstRender {
136+impl Render for ListensOnlyOnFirstRender {
130− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
137+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
131 use dodrio::builder::*;
138 use dodrio::builder::*;
132
139
133 let count = self.count.get();
140 let count = self.count.get();
134 self.count.set(count + 1);
141 self.count.set(count + 1);
135
142
136− let mut elem = div(&cx).attr("id", "target");
143+ let mut elem = div(cx.bump).attr("id", "target");
137 if count == 0 {
144 if count == 0 {
138 elem = elem.on("click", |root, _scheduler, _event| {
145 elem = elem.on("click", |root, _scheduler, _event| {
139 (root.unwrap_mut::<ListensOnlyOnFirstRender>().callback)();
146 (root.unwrap_mut::<ListensOnlyOnFirstRender>().callback)();
@@ -143,11 +150,11 @@ impl<'a> Render<'a> for ListensOnlyOnFirstRender {
143 }
150 }
144}
151}
145
152
146−#[wasm_bindgen_test]
153+#[wasm_bindgen_test(async)]
147−async fn removed_listener_is_not_called() {
154+fn removed_listener_is_not_called() -> impl Future<Item = (), Error = JsValue> {
148 let container = create_element("div");
155 let container = create_element("div");
149
156
150− let (outer_sender, outer_receiver) = futures::channel::oneshot::channel();
157+ let (outer_sender, outer_receiver) = futures::sync::oneshot::channel();
151 let outer_sender = Rc::new(RefCell::new(Some(outer_sender)));
158 let outer_sender = Rc::new(RefCell::new(Some(outer_sender)));
152 let outer_listener = Closure::wrap(Box::new(move |_| {
159 let outer_listener = Closure::wrap(Box::new(move |_| {
153 outer_sender
160 outer_sender
@@ -156,13 +163,13 @@ async fn removed_listener_is_not_called() {
156 .expect_throw("should only invoke outer_listener once")
163 .expect_throw("should only invoke outer_listener once")
157 .send("outer")
164 .send("outer")
158 .expect_throw("should not have dropped receiver");
165 .expect_throw("should not have dropped receiver");
159− }) as Box<dyn FnMut(web_sys::Event)>);
166+ }) as Box<FnMut(web_sys::Event)>);
160
167
161 container
168 container
162 .add_event_listener_with_callback("click", outer_listener.as_ref().unchecked_ref())
169 .add_event_listener_with_callback("click", outer_listener.as_ref().unchecked_ref())
163 .unwrap();
170 .unwrap();
164
171
165− let (vdom_sender, vdom_receiver) = futures::channel::oneshot::channel();
172+ let (vdom_sender, vdom_receiver) = futures::sync::oneshot::channel();
166 let mut vdom_sender = Some(vdom_sender);
173 let mut vdom_sender = Some(vdom_sender);
167
174
168 // Render a vdom with a listener into container.
175 // Render a vdom with a listener into container.
@@ -177,26 +184,33 @@ async fn removed_listener_is_not_called() {
177 }),
184 }),
178 );
185 );
179
186
187+ vdom.weak()
180− // Re-render, so we aren't listening anymore.
188+ // Re-render, so we aren't listening anymore.
181− vdom.weak().render().await.unwrap();
189+ .render()
182−
190+ .map_err(|e| JsValue::from(e.to_string()))
191+ .and_then(move |_| {
183− target(&container).click();
192+ target(&container).click();
184−
193+
185− // We should get our container's event handler fired, and not the unmounted
194+ // We should get our container's event handler fired, and not the unmounted
186− // vdom's event handler.
195+ // vdom's event handler.
196+ outer_receiver
187− match select(outer_receiver, vdom_receiver).await {
197+ .select(vdom_receiver)
198+ .map(|(which, _other)| which)
199+ .or_else(|(_error, other)| other)
200+ .map(|which| {
188− Either::Left((Ok(msg), _)) => assert_eq!(msg, ("outer")),
201+ assert_eq!(which, "outer");
189− Either::Left((Err(_), _)) => panic!(),
202+ drop(outer_listener);
190− Either::Right((Ok(_), _)) => panic!(),
203+ drop(vdom)
191− Either::Right((Err(_), outer)) => assert_eq!(outer.await, Ok("outer")),
204+ })
205+ .map_err(|e| JsValue::from(e.to_string()))
192− }
206+ })
193}
207}
194
208
195−#[wasm_bindgen_test]
209+#[wasm_bindgen_test(async)]
196−async fn event_does_not_fire_after_unmounting() {
210+fn event_does_not_fire_after_unmounting() -> impl Future<Item = (), Error = JsValue> {
197 let container = create_element("div");
211 let container = create_element("div");
198
212
199− let (outer_sender, outer_receiver) = futures::channel::oneshot::channel();
213+ let (outer_sender, outer_receiver) = futures::sync::oneshot::channel();
200 let outer_sender = Rc::new(RefCell::new(Some(outer_sender)));
214 let outer_sender = Rc::new(RefCell::new(Some(outer_sender)));
201 let outer_listener = Closure::wrap(Box::new(move |_| {
215 let outer_listener = Closure::wrap(Box::new(move |_| {
202 outer_sender
216 outer_sender
@@ -205,13 +219,13 @@ async fn event_does_not_fire_after_unmounting() {
205 .expect_throw("should only invoke outer_listener once")
219 .expect_throw("should only invoke outer_listener once")
206 .send("outer")
220 .send("outer")
207 .expect_throw("should not have dropped receiver");
221 .expect_throw("should not have dropped receiver");
208− }) as Box<dyn FnMut(web_sys::Event)>);
222+ }) as Box<FnMut(web_sys::Event)>);
209
223
210 container
224 container
211 .add_event_listener_with_callback("click", outer_listener.as_ref().unchecked_ref())
225 .add_event_listener_with_callback("click", outer_listener.as_ref().unchecked_ref())
212 .unwrap();
226 .unwrap();
213
227
214− let (vdom_sender, vdom_receiver) = futures::channel::oneshot::channel();
228+ let (vdom_sender, vdom_receiver) = futures::sync::oneshot::channel();
215 let mut vdom_sender = Some(vdom_sender);
229 let mut vdom_sender = Some(vdom_sender);
216
230
217 // Render a vdom with a listener into container.
231 // Render a vdom with a listener into container.
@@ -241,10 +255,13 @@ async fn event_does_not_fire_after_unmounting() {
241
255
242 // We should get our container's event handler fired, and not the unmounted
256 // We should get our container's event handler fired, and not the unmounted
243 // vdom's event handler.
257 // vdom's event handler.
244− match select(outer_receiver, vdom_receiver).await {
258+ outer_receiver
259+ .select(vdom_receiver)
260+ .map(|(which, _other)| which)
261+ .or_else(|(_error, other)| other)
262+ .map(|which| {
245− Either::Left((Ok(msg), _)) => assert_eq!(msg, ("outer")),
263+ assert_eq!(which, "outer");
246− Either::Left((Err(_), _)) => panic!(),
264+ drop(outer_listener);
247− Either::Right((Ok(_), _)) => panic!(),
248− Either::Right((Err(_), outer)) => assert_eq!(outer.await, Ok("outer")),
249− }
265+ })
266+ .map_err(|e| JsValue::from(e.to_string()))
250}
267}
tests/web/js_api.rs+41−34
@@ -1,7 +1,8 @@
1use super::{assert_rendered, create_element, RenderFn};
1use super::{assert_rendered, create_element, RenderFn};
2use dodrio::{builder::*, Node, Render, RenderContext, Vdom};
2use dodrio::{builder::*, Node, Render, RenderContext, Vdom};
3use dodrio_js_api::JsRender;
3use dodrio_js_api::JsRender;
4−use futures::channel::oneshot;
4+use futures::prelude::*;
5+use futures::sync::oneshot;
5use js_sys::Object;
6use js_sys::Object;
6use std::rc::Rc;
7use std::rc::Rc;
7use wasm_bindgen::prelude::*;
8use wasm_bindgen::prelude::*;
@@ -13,7 +14,7 @@ pub struct WrapJs {
13}
14}
14
15
15impl WrapJs {
16impl WrapJs {
16− pub fn new() -> (WrapJs, oneshot::Receiver<()>, Closure<dyn FnMut()>) {
17+ pub fn new() -> (WrapJs, oneshot::Receiver<()>, Closure<FnMut()>) {
17 let (sender, receiver) = oneshot::channel();
18 let (sender, receiver) = oneshot::channel();
18
19
19 let on_after_render = Closure::wrap(Box::new({
20 let on_after_render = Closure::wrap(Box::new({
@@ -25,7 +26,7 @@ impl WrapJs {
25 .send(())
26 .send(())
26 .expect_throw("receiver should not have been dropped");
27 .expect_throw("receiver should not have been dropped");
27 }
28 }
28− }) as Box<dyn FnMut()>);
29+ }) as Box<FnMut()>);
29
30
30 let component = WrapJs {
31 let component = WrapJs {
31 inner: JsRender::new(JsComponent::new(&on_after_render)),
32 inner: JsRender::new(JsComponent::new(&on_after_render)),
@@ -35,9 +36,9 @@ impl WrapJs {
35 }
36 }
36}
37}
37
38
38−impl<'a> Render<'a> for WrapJs {
39+impl Render for WrapJs {
39− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
40+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
40− div(&cx)
41+ div(cx.bump)
41 .attr("class", "wrap-js")
42 .attr("class", "wrap-js")
42 .children([self.inner.render(cx)])
43 .children([self.inner.render(cx)])
43 .finish()
44 .finish()
@@ -51,7 +52,7 @@ extern "C" {
51 type JsComponent;
52 type JsComponent;
52
53
53 #[wasm_bindgen(constructor)]
54 #[wasm_bindgen(constructor)]
54− fn new(on_after_render: &Closure<dyn FnMut()>) -> JsComponent;
55+ fn new(on_after_render: &Closure<FnMut()>) -> JsComponent;
55}
56}
56
57
57fn eval_js_rendering_component() {
58fn eval_js_rendering_component() {
@@ -95,24 +96,24 @@ fn eval_js_rendering_component() {
95 });
96 });
96}
97}
97
98
98−#[wasm_bindgen_test]
99+#[wasm_bindgen_test(async)]
99−async fn can_use_js_rendering_components() {
100+fn can_use_js_rendering_components() -> impl Future<Item = (), Error = JsValue> {
100 eval_js_rendering_component();
101 eval_js_rendering_component();
101
102
102 let container = create_element("div");
103 let container = create_element("div");
103− let (component, receiver, _closure) = WrapJs::new();
104+ let (component, receiver, closure) = WrapJs::new();
104− let _vdom = Rc::new(Vdom::new(&container, component));
105
105
106+ let vdom = Rc::new(Vdom::new(&container, component));
106 assert_rendered(
107 assert_rendered(
107 &container,
108 &container,
108 &RenderFn(|cx| {
109 &RenderFn(|cx| {
109− div(&cx)
110+ div(cx.bump)
110 .attr("class", "wrap-js")
111 .attr("class", "wrap-js")
111− .children([span(&cx)
112+ .children([span(cx.bump)
112 .attr("class", "js-component")
113 .attr("class", "js-component")
113 .children([
114 .children([
114 text("Here is some plain text"),
115 text("Here is some plain text"),
115− b(&cx)
116+ b(cx.bump)
116 .children([text("...and here is some bold text")])
117 .children([text("...and here is some bold text")])
117 .finish(),
118 .finish(),
118 text("0"),
119 text("0"),
@@ -130,24 +131,30 @@ async fn can_use_js_rendering_components() {
130 .expect_throw("should be an `HTMLElement` object")
131 .expect_throw("should be an `HTMLElement` object")
131 .click();
132 .click();
132
133
133− receiver.await.unwrap();
134+ receiver
134−
135+ .map(move |_| {
135− assert_rendered(
136+ assert_rendered(
136− &container,
137+ &container,
137− &RenderFn(|cx| {
138+ &RenderFn(|cx| {
138− div(&cx)
139+ div(cx.bump)
139− .attr("class", "wrap-js")
140+ .attr("class", "wrap-js")
140− .children([span(&cx)
141+ .children([span(cx.bump)
141− .attr("class", "js-component")
142+ .attr("class", "js-component")
142− .children([
143+ .children([
143− text("Here is some plain text"),
144+ text("Here is some plain text"),
144− b(&cx)
145+ b(cx.bump)
145− .children([text("...and here is some bold text")])
146+ .children([text("...and here is some bold text")])
146− .finish(),
147+ .finish(),
147− text("1"),
148+ text("1"),
148− ])
149+ ])
149− .finish()])
150+ .finish()])
150− .finish()
151+ .finish()
151− }),
152+ }),
152− );
153+ );
154+
155+ drop(vdom);
156+ drop(container);
157+ drop(closure);
158+ })
159+ .map_err(|e| e.to_string().into())
153}
160}
tests/web/keyed.jsdeleted−25
@@ -1,25 +0,0 @@
1−export function saveKeyedElements(container) {
2− const saved = new Map;
3− const children = container.querySelectorAll(".keyed");
4− for (const child of children) {
5− saved.set(child.id, child);
6− }
7− return saved;
8−}
9−
10−function assertEq(a, b, msg) {
11− if (a !== b) {
12− throw new Error(`assertEq failed: ${a} !== ${b}; ${msg}`);
13− }
14−}
15−
16−export function checkKeyedElements(container, saved) {
17− const children = container.querySelectorAll(".keyed");
18− for (const child of children) {
19− console.log(`checking child=${child.outerHTML}`);
20− const original = saved.get(child.id);
21− if (original) {
22− assertEq(original, child, `did not preserve child with key=${child.id}`);
23− }
24− }
25−}
tests/web/keyed.rsdeleted−269
@@ -1,269 +0,0 @@
1−use crate::{assert_rendered, create_element};
2−use dodrio::{builder::*, bumpalo, Node, Render, RenderContext, Vdom};
3−use log::*;
4−use std::rc::Rc;
5−use wasm_bindgen::prelude::*;
6−use wasm_bindgen_test::*;
7−
8−struct Keyed(u16);
9−
10−impl<'a> Render<'a> for Keyed {
11− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
12− let key = bumpalo::format!(in cx.bump, "{}", self.0).into_bump_str();
13− div(&cx)
14− .attr("class", "keyed")
15− .attr("id", key)
16− .key(self.0 as u32)
17− .finish()
18− }
19−}
20−
21−fn keyed<'a, Keys>(cx: &mut RenderContext<'a>, keys: Keys) -> Node<'a>
22−where
23− Keys: AsRef<[u16]>,
24−{
25− let mut parent = div(&cx).attr("class", "parent");
26−
27− for &k in keys.as_ref() {
28− parent = parent.child(Keyed(k).render(cx));
29− }
30−
31− parent.finish()
32−}
33−
34−async fn assert_keyed<Before, After>(before: Before, after: After) -> Result<(), JsValue>
35−where
36− Before: 'static + for<'a> Render<'a>,
37− After: 'static + for<'a> Render<'a>,
38−{
39− #[wasm_bindgen(module = "/tests/web/keyed.js")]
40− extern "C" {
41− #[wasm_bindgen(js_name = saveKeyedElements)]
42− fn save_keyed_elements(container: &web_sys::Element) -> JsValue;
43−
44− #[wasm_bindgen(js_name = checkKeyedElements)]
45− fn check_keyed_elements(container: &web_sys::Element, saved: JsValue);
46− }
47−
48− let container = create_element("div");
49−
50− let before = Rc::new(before);
51− let after = Rc::new(after);
52−
53− debug!("====== Rendering the *before* DOM into the physical DOM ======");
54− let vdom1 = Rc::new(Vdom::new(&container, before.clone()));
55− let _vdom2 = vdom1.clone();
56− let saved = save_keyed_elements(&container);
57−
58− debug!("====== Checking the *before* DOM against the physical DOM ======");
59− assert_rendered(&container, &before);
60−
61− debug!("====== Rendering the *after* DOM into the physical DOM ======");
62− let weak = vdom1.weak();
63− weak.set_component(Box::new(after.clone()))
64− .await
65− .map_err(|e| e.to_string())?;
66−
67− debug!("====== Checking the *after* DOM against the physical DOM ======");
68− assert_rendered(&container, &after);
69− check_keyed_elements(&container, saved);
70−
71− Ok(())
72−}
73−
74−macro_rules! keyed_tests {
75− ( $(
76− $name:ident {
77− before($before_cx:ident) {
78− $( $before:tt )*
79− }
80− after($after_cx:ident) {
81− $( $after:tt )*
82− }
83− }
84− )* ) => {
85− $(
86− #[wasm_bindgen_test]
87− async fn $name() {
88− use crate::RenderFn;
89− log::debug!("############### {} ###############", stringify!($name));
90− assert_keyed(
91− RenderFn(|$before_cx| { $( $before )* }),
92− RenderFn(|$after_cx| { $( $after )* }),
93− )
94− .await
95− .unwrap()
96− }
97− )*
98− }
99−}
100−
101−keyed_tests! {
102− same_order {
103− before(cx) {
104− keyed(cx, [1, 2, 3])
105− }
106− after(cx) {
107− keyed(cx, [1, 2, 3])
108− }
109− }
110−
111− same_order_append {
112− before(cx) {
113− keyed(cx, [1])
114− }
115− after(cx) {
116− keyed(cx, [1, 2])
117− }
118− }
119−
120− same_order_delete {
121− before(cx) {
122− keyed(cx, [1, 2, 3])
123− }
124− after(cx) {
125− keyed(cx, [1, 2])
126− }
127− }
128−
129− same_suffix {
130− before(cx) {
131− keyed(cx, [1, 2, 3])
132− }
133− after(cx) {
134− keyed(cx, [4, 2, 3])
135− }
136− }
137−
138− same_prefix_and_suffix_reorder_middle {
139− before(cx) {
140− keyed(cx, [1, 2, 3, 4])
141− }
142− after(cx) {
143− keyed(cx, [1, 3, 2, 4])
144− }
145− }
146−
147− same_prefix_and_suffix_new_middle {
148− before(cx) {
149− keyed(cx, [2, 3, 4, 5])
150− }
151− after(cx) {
152− keyed(cx, [2, 7, 8, 5])
153− }
154− }
155−
156− reverse_order {
157− before(cx) {
158− keyed(cx, [1, 2, 3])
159− }
160− after(cx) {
161− keyed(cx, [3, 2, 1])
162− }
163− }
164−
165− no_shared_keys {
166− before(cx) {
167− keyed(cx, [1, 2])
168− }
169− after(cx) {
170− keyed(cx, [3, 4])
171− }
172− }
173−
174− new_keys_in_middle {
175− before(cx) {
176− keyed(cx, [1, 2])
177− }
178− after(cx) {
179− keyed(cx, [1, 3, 4, 2])
180− }
181− }
182−
183− new_keys_at_start_and_end {
184− before(cx) {
185− keyed(cx, [1, 2, 3])
186− }
187− after(cx) {
188− keyed(cx, [4, 1, 2, 3, 5])
189− }
190− }
191−
192− delete_prefix {
193− before(cx) {
194− keyed(cx, [1, 2, 3])
195− }
196− after(cx) {
197− keyed(cx, [2, 3])
198− }
199− }
200−
201− delete_suffix {
202− before(cx) {
203− keyed(cx, [1, 2, 3])
204− }
205− after(cx) {
206− keyed(cx, [1, 2])
207− }
208− }
209−
210− delete_middle {
211− before(cx) {
212− keyed(cx, [1, 2, 3])
213− }
214− after(cx) {
215− keyed(cx, [1, 3])
216− }
217− }
218−
219− nested_keyed_children {
220− before(cx) {
221− ul(&cx)
222− .children([
223− li(&cx)
224− .key(1)
225− .children([
226− keyed(cx, [2, 3, 4])
227− ])
228− .finish(),
229− li(&cx)
230− .key(5)
231− .children([
232− keyed(cx, [6, 7, 8])
233− ])
234− .finish(),
235− li(&cx)
236− .key(9)
237− .children([
238− keyed(cx, [10, 11, 12])
239− ])
240− .finish(),
241− ])
242− .finish()
243− }
244− after(cx) {
245− ul(&cx)
246− .children([
247− li(&cx)
248− .key(9)
249− .children([
250− keyed(cx, [12, 11, 10])
251− ])
252− .finish(),
253− li(&cx)
254− .key(5)
255− .children([
256− keyed(cx, [8, 7, 6])
257− ])
258− .finish(),
259− li(&cx)
260− .key(1)
261− .children([
262− keyed(cx, [4, 3, 2])
263− ])
264− .finish(),
265− ])
266− .finish()
267− }
268− }
269−}
tests/web/main.rs+33−56
@@ -1,14 +1,11 @@
1//! Test suite for the Web and headless browsers.
1//! Test suite for the Web and headless browsers.
2
2
3−#![cfg(all(feature = "xxx-unstable-internal-use-only", target_arch = "wasm32"))]
3+#![cfg(target_arch = "wasm32")]
4
4
5use bumpalo::Bump;
5use bumpalo::Bump;
6−use dodrio::{
7− Attribute, CachedSet, ElementNode, Node, NodeKind, Render, RenderContext, TextNode, Vdom,
6+use dodrio::{Attribute, Node, Render, RenderContext, Vdom};
8−};
7+use futures::prelude::*;
9−use fxhash::FxHashMap;
10use log::*;
8use log::*;
11−use std::cell::RefCell;
12use std::rc::Rc;
9use std::rc::Rc;
13use wasm_bindgen::prelude::*;
10use wasm_bindgen::prelude::*;
14use wasm_bindgen::JsCast;
11use wasm_bindgen::JsCast;
@@ -16,10 +13,8 @@ use wasm_bindgen_test::*;
16
13
17wasm_bindgen_test_configure!(run_in_browser);
14wasm_bindgen_test_configure!(run_in_browser);
18
15
19−pub mod cached;
20pub mod events;
16pub mod events;
21pub mod js_api;
17pub mod js_api;
22−pub mod keyed;
23pub mod render;
18pub mod render;
24
19
25pub fn window() -> web_sys::Window {
20pub fn window() -> web_sys::Window {
@@ -50,20 +45,16 @@ pub fn init_logging() {
50
45
51/// Assert that the `container` contains the physical DOM tree that matches
46/// Assert that the `container` contains the physical DOM tree that matches
52/// `r`'s rendered virtual DOM.
47/// `r`'s rendered virtual DOM.
53−pub fn assert_rendered<R: for<'a> Render<'a>>(container: &web_sys::Element, r: &R) {
48+pub fn assert_rendered<R: Render>(container: &web_sys::Element, r: &R) {
54 init_logging();
49 init_logging();
55
50
56− let cached_set = &RefCell::new(CachedSet::default());
57 let bump = &Bump::new();
51 let bump = &Bump::new();
58− let templates = &mut FxHashMap::default();
59− let cx = &mut RenderContext::new(bump, cached_set, templates);
52+ let cx = &mut RenderContext::new(bump);
60 let node = r.render(cx);
53 let node = r.render(cx);
61 let child = container
54 let child = container
62 .first_child()
55 .first_child()
63 .expect("container does not have anything rendered into it?");
56 .expect("container does not have anything rendered into it?");
64−
65− let cached_set = cached_set.borrow();
66− check_node(&cached_set, &child, &node);
57+ check_node(&child, &node);
67
58
68 fn stringify_actual_node(n: &web_sys::Node) -> String {
59 fn stringify_actual_node(n: &web_sys::Node) -> String {
69 if let Some(el) = n.dyn_ref::<web_sys::Element>() {
60 if let Some(el) = n.dyn_ref::<web_sys::Element>() {
@@ -73,12 +64,12 @@ pub fn assert_rendered<R: for<'a> Render<'a>>(container: &web_sys::Element, r: &
73 }
64 }
74 }
65 }
75
66
76− fn check_node(cached_set: &CachedSet, actual: &web_sys::Node, expected: &Node) {
67+ fn check_node(actual: &web_sys::Node, expected: &Node) {
77 debug!("check_render:");
68 debug!("check_render:");
78 debug!(" actual = {}", stringify_actual_node(&actual));
69 debug!(" actual = {}", stringify_actual_node(&actual));
79 debug!(" expected = {:#?}", expected);
70 debug!(" expected = {:#?}", expected);
80− match expected.kind {
71+ match expected {
81− NodeKind::Text(TextNode { text }) => {
72+ Node::Text(text_node) => {
82 assert_eq!(
73 assert_eq!(
83 actual.node_name().to_uppercase(),
74 actual.node_name().to_uppercase(),
84 "#TEXT",
75 "#TEXT",
@@ -86,35 +77,25 @@ pub fn assert_rendered<R: for<'a> Render<'a>>(container: &web_sys::Element, r: &
86 );
77 );
87 assert_eq!(
78 assert_eq!(
88 actual.text_content().unwrap_or_default(),
79 actual.text_content().unwrap_or_default(),
89− text,
80+ text_node.text(),
90 "actual.text_content() == expected.text()"
81 "actual.text_content() == expected.text()"
91 );
82 );
92 }
83 }
93− NodeKind::Element(&ElementNode {
84+ Node::Element(elem) => {
94− tag_name,
95− attributes,
96− children,
97− namespace,
98− ..
99− }) => {
100 assert_eq!(
85 assert_eq!(
101 actual.node_name().to_uppercase(),
86 actual.node_name().to_uppercase(),
102− tag_name.to_uppercase(),
87+ elem.tag_name().to_uppercase(),
103 "actual.node_name() == expected.tag_name()"
88 "actual.node_name() == expected.tag_name()"
104 );
89 );
105 let actual = actual
90 let actual = actual
106 .dyn_ref::<web_sys::Element>()
91 .dyn_ref::<web_sys::Element>()
107 .expect("`actual` should be an `Element`");
92 .expect("`actual` should be an `Element`");
108− check_attributes(actual.attributes(), attributes);
93+ check_attributes(actual.attributes(), elem.attributes());
109− check_children(cached_set, actual.child_nodes(), children);
94+ check_children(actual.child_nodes(), elem.children());
110− if let Some(namespace) = namespace {
95+ if let Some(namespace) = elem.namespace() {
111 assert_eq!(actual.namespace_uri(), Some(namespace.into()))
96 assert_eq!(actual.namespace_uri(), Some(namespace.into()))
112 }
97 }
113 }
98 }
114− NodeKind::Cached(ref c) => {
115− let (expected, _template) = cached_set.get(c.id);
116− check_node(cached_set, actual, &expected);
117− }
118 }
99 }
119 }
100 }
120
101
@@ -137,7 +118,7 @@ pub fn assert_rendered<R: for<'a> Render<'a>>(container: &web_sys::Element, r: &
137 }
118 }
138 }
119 }
139
120
140− fn check_children(cached_set: &CachedSet, actual: web_sys::NodeList, expected: &[Node]) {
121+ fn check_children(actual: web_sys::NodeList, expected: &[Node]) {
141 assert_eq!(
122 assert_eq!(
142 actual.length(),
123 actual.length(),
143 expected.len() as u32,
124 expected.len() as u32,
@@ -145,7 +126,7 @@ pub fn assert_rendered<R: for<'a> Render<'a>>(container: &web_sys::Element, r: &
145 );
126 );
146 for (i, child) in expected.iter().enumerate() {
127 for (i, child) in expected.iter().enumerate() {
147 let actual_child = actual.item(i as u32).unwrap();
128 let actual_child = actual.item(i as u32).unwrap();
148− check_node(cached_set, &actual_child, child);
129+ check_node(&actual_child, child);
149 }
130 }
150 }
131 }
151}
132}
@@ -153,13 +134,13 @@ pub fn assert_rendered<R: for<'a> Render<'a>>(container: &web_sys::Element, r: &
153/// Use the function `F` to render.
134/// Use the function `F` to render.
154pub struct RenderFn<F>(F)
135pub struct RenderFn<F>(F)
155where
136where
156− F: for<'a> Fn(&mut RenderContext<'a>) -> Node<'a>;
137+ F: for<'bump> Fn(&mut RenderContext<'bump>) -> Node<'bump>;
157
138
158−impl<'a, F> Render<'a> for RenderFn<F>
139+impl<F> Render for RenderFn<F>
159where
140where
160− F: for<'b> Fn(&mut RenderContext<'b>) -> Node<'b>,
141+ F: for<'bump> Fn(&mut RenderContext<'bump>) -> Node<'bump>,
161{
142{
162− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
143+ fn render<'bump>(&self, cx: &mut RenderContext<'bump>) -> Node<'bump> {
163 (self.0)(cx)
144 (self.0)(cx)
164 }
145 }
165}
146}
@@ -167,10 +148,10 @@ where
167/// Assert that if we start by rendering the `before` virtual DOM tree into a
148/// Assert that if we start by rendering the `before` virtual DOM tree into a
168/// physical DOM tree, and then diff it with the `after` virtual DOM tree, then
149/// physical DOM tree, and then diff it with the `after` virtual DOM tree, then
169/// the physical DOM tree correctly matches `after`.
150/// the physical DOM tree correctly matches `after`.
170−pub async fn assert_before_after<R, S>(before: R, after: S) -> Result<(), JsValue>
151+pub fn assert_before_after<R, S>(before: R, after: S) -> impl Future<Item = (), Error = JsValue>
171where
152where
172− R: 'static + for<'a> Render<'a>,
153+ R: 'static + Render,
173− S: 'static + for<'a> Render<'a>,
154+ S: 'static + Render,
174{
155{
175 let container = create_element("div");
156 let container = create_element("div");
176
157
@@ -179,7 +160,7 @@ where
179
160
180 debug!("====== Rendering the *before* DOM into the physical DOM ======");
161 debug!("====== Rendering the *before* DOM into the physical DOM ======");
181 let vdom1 = Rc::new(Vdom::new(&container, before.clone()));
162 let vdom1 = Rc::new(Vdom::new(&container, before.clone()));
182− let _vdom2 = vdom1.clone();
163+ let vdom2 = vdom1.clone();
183
164
184 debug!("====== Checking the *before* DOM against the physical DOM ======");
165 debug!("====== Checking the *before* DOM against the physical DOM ======");
185 assert_rendered(&container, &before);
166 assert_rendered(&container, &before);
@@ -187,13 +168,12 @@ where
187 debug!("====== Rendering the *after* DOM into the physical DOM ======");
168 debug!("====== Rendering the *after* DOM into the physical DOM ======");
188 let weak = vdom1.weak();
169 let weak = vdom1.weak();
189 weak.set_component(Box::new(after.clone()))
170 weak.set_component(Box::new(after.clone()))
190− .await
171+ .map(move |_| {
191− .map_err(|e| e.to_string())?;
192−
193− debug!("====== Checking the *after* DOM against the physical DOM ======");
172+ debug!("====== Checking the *after* DOM against the physical DOM ======");
194− assert_rendered(&container, &after);
173+ assert_rendered(&container, &after);
195−
174+ drop(vdom2);
196− Ok(())
175+ })
176+ .map_err(|e| JsValue::from(e.to_string()))
197}
177}
198
178
199/// A helper macro for declaring a bunch of `assert_before_after` tests.
179/// A helper macro for declaring a bunch of `assert_before_after` tests.
@@ -210,16 +190,13 @@ macro_rules! before_after {
210 }
190 }
211 )* ) => {
191 )* ) => {
212 $(
192 $(
213− #[wasm_bindgen_test]
193+ #[wasm_bindgen_test(async)]
214− async fn $name() {
194+ fn $name() -> impl Future<Item = (), Error = wasm_bindgen::JsValue> {
215 use crate::{assert_before_after, RenderFn};
195 use crate::{assert_before_after, RenderFn};
216− log::debug!("############### {} ###############", stringify!($name));
217 assert_before_after(
196 assert_before_after(
218 RenderFn(|$before_bump| { $( $before )* }),
197 RenderFn(|$before_bump| { $( $before )* }),
219 RenderFn(|$after_bump| { $( $after )* })
198 RenderFn(|$after_bump| { $( $after )* })
220 )
199 )
221− .await
222− .unwrap()
223 }
200 }
224 )*
201 )*
225 }
202 }
tests/web/render.rs+48−135
@@ -1,7 +1,7 @@
1use super::{assert_rendered, before_after, create_element, RenderFn};
1use super::{assert_rendered, before_after, create_element, RenderFn};
2−use dodrio::{builder::*, bumpalo::collections::String, Node, Render, RenderContext, Vdom};
2+use dodrio::{builder::*, Vdom};
3+use futures::prelude::*;
3use std::rc::Rc;
4use std::rc::Rc;
4−use wasm_bindgen::{ JsCast};
5use wasm_bindgen_test::*;
5use wasm_bindgen_test::*;
6
6
7#[wasm_bindgen_test]
7#[wasm_bindgen_test]
@@ -16,9 +16,9 @@ fn render_initial_text() {
16#[wasm_bindgen_test]
16#[wasm_bindgen_test]
17fn render_initial_node() {
17fn render_initial_node() {
18 let hello = Rc::new(RenderFn(|cx| {
18 let hello = Rc::new(RenderFn(|cx| {
19− div(&cx)
19+ div(cx.bump)
20 .attr("id", "hello-world")
20 .attr("id", "hello-world")
21− .children([text("Hello "), span(&cx).child(text("World!")).finish()])
21+ .children([text("Hello "), span(cx.bump).child(text("World!")).finish()])
22 .finish()
22 .finish()
23 }));
23 }));
24
24
@@ -35,93 +35,6 @@ fn container_is_emptied_upon_drop() {
35 assert!(container.first_child().is_none());
35 assert!(container.first_child().is_none());
36}
36}
37
37
38−/// Renders a child with a lifetime scoped to the RenderContext bump arena.
39−#[wasm_bindgen_test]
40−fn render_bump_scoped_node() {
41− struct Child<'a> {
42− name: &'a str,
43− }
44−
45− impl<'a> Render<'a> for Child<'a> {
46− fn render(&self, _cx: &mut RenderContext<'a>) -> Node<'a> {
47− text(self.name)
48− }
49− }
50−
51− struct Parent;
52−
53− impl<'a> Render<'a> for Parent {
54− fn render(&self, cx: &mut RenderContext<'a>) -> Node<'a> {
55− let child_name = String::from_str_in("child", cx.bump).into_bump_str();
56−
57− div(&cx)
58− .children([Child { name: child_name }.render(cx)])
59− .finish()
60− }
61− }
62−
63− let parent = Rc::new(RenderFn(|cx| {
64− Parent.render(cx)
65− }));
66−
67− let container = create_element("div");
68− let _vdom = Vdom::new(&container, parent.clone());
69−
70− assert_rendered(&container, &parent);
71−}
72−
73−/// Originally, dodrio would use the className property for SVGs.
74−///
75−/// This is problematic because when SVG elements are created, the className is flagged as a read
76−/// only property, so setting it causes an exception to be thrown. Here's an example of how this
77−/// happens:
78−///
79−/// let elem = web_sys::window()
80−/// .unwrap()
81−/// .document()
82−/// .unwrap()
83−/// .create_element_ns(Some("http://www.w3.org/2000/svg"), "svg")
84−/// .unwrap();
85−///
86−/// elem.set_class_name("does-not-work");
87−///
88−/// -----------------------------------------------------------------------------------------------
89−///
90−/// wasm-bindgen: imported JS function that was not marked as `catch` threw an error:
91−/// setting getter-only property "className"
92−///
93−/// -----------------------------------------------------------------------------------------------
94−///
95−/// Now, dodrio passes the 'class' attribute of all namespaced elements into set_attribute. This
96−/// satisfies the restrictions on SVG and keeps the optimized path for non-namespaced elements
97−#[wasm_bindgen_test(async)]
98−async fn test_svg_set_class() {
99− let container = create_element("div");
100−
101−
102− let valid_svg = Rc::new(RenderFn(|cx| {
103− ElementBuilder::new(cx.bump, "svg")
104− .namespace(Some("http://www.w3.org/2000/svg"))
105− .attr("class", "works")
106− .finish()
107− }));
108−
109− let vdom = Vdom::new(&container, valid_svg.clone());
110− let weak = vdom.weak();
111−
112− weak.render().await.unwrap();
113−
114− assert_eq!(
115− "works",
116− container.first_child()
117− .expect("unable to get svg")
118− .dyn_ref::<web_sys::Element>()
119− .expect("svg should be an element")
120− .get_attribute("class")
121− .expect("unable to get 'class' of svg")
122− );
123−}
124−
125before_after! {
38before_after! {
126 same_text {
39 same_text {
127 before(_cx) {
40 before(_cx) {
@@ -146,13 +59,13 @@ before_after! {
146 text("before")
59 text("before")
147 }
60 }
148 after(cx) {
61 after(cx) {
149− div(&cx).finish()
62+ div(cx.bump).finish()
150 }
63 }
151 }
64 }
152
65
153 replace_elem_with_text {
66 replace_elem_with_text {
154 before(cx) {
67 before(cx) {
155− div(&cx).finish()
68+ div(cx.bump).finish()
156 }
69 }
157 after(_cx) {
70 after(_cx) {
158 text("before")
71 text("before")
@@ -161,52 +74,52 @@ before_after! {
161
74
162 same_elem {
75 same_elem {
163 before(cx) {
76 before(cx) {
164− div(&cx).finish()
77+ div(cx.bump).finish()
165 }
78 }
166 after(cx) {
79 after(cx) {
167− div(&cx).finish()
80+ div(cx.bump).finish()
168 }
81 }
169 }
82 }
170
83
171 elems_with_different_tag_names {
84 elems_with_different_tag_names {
172 before(cx) {
85 before(cx) {
173− span(&cx).finish()
86+ span(cx.bump).finish()
174 }
87 }
175 after(cx) {
88 after(cx) {
176− div(&cx).finish()
89+ div(cx.bump).finish()
177 }
90 }
178 }
91 }
179
92
180 same_tag_name_update_attribute {
93 same_tag_name_update_attribute {
181 before(cx) {
94 before(cx) {
182− div(&cx).attr("value", "1").finish()
95+ div(cx.bump).attr("value", "1").finish()
183 }
96 }
184 after(cx) {
97 after(cx) {
185− div(&cx).attr("value", "2").finish()
98+ div(cx.bump).attr("value", "2").finish()
186 }
99 }
187 }
100 }
188
101
189 same_tag_name_remove_attribute {
102 same_tag_name_remove_attribute {
190 before(cx) {
103 before(cx) {
191− div(&cx).attr("value", "1").finish()
104+ div(cx.bump).attr("value", "1").finish()
192 }
105 }
193 after(cx) {
106 after(cx) {
194− div(&cx).finish()
107+ div(cx.bump).finish()
195 }
108 }
196 }
109 }
197
110
198 same_tag_name_add_attribute {
111 same_tag_name_add_attribute {
199 before(cx) {
112 before(cx) {
200− div(&cx).finish()
113+ div(cx.bump).finish()
201 }
114 }
202 after(cx) {
115 after(cx) {
203− div(&cx).attr("value", "2").finish()
116+ div(cx.bump).attr("value", "2").finish()
204 }
117 }
205 }
118 }
206
119
207 same_tag_name_many_attributes {
120 same_tag_name_many_attributes {
208 before(cx) {
121 before(cx) {
209− div(&cx)
122+ div(cx.bump)
210 .attr("before-1", "1")
123 .attr("before-1", "1")
211 .attr("shared-1", "1")
124 .attr("shared-1", "1")
212 .attr("modified-1", "1")
125 .attr("modified-1", "1")
@@ -219,7 +132,7 @@ before_after! {
219 .finish()
132 .finish()
220 }
133 }
221 after(cx) {
134 after(cx) {
222− div(&cx)
135+ div(cx.bump)
223 .attr("after-1", "1")
136 .attr("after-1", "1")
224 .attr("shared-1", "1")
137 .attr("shared-1", "1")
225 .attr("modified-1", "100")
138 .attr("modified-1", "100")
@@ -235,56 +148,56 @@ before_after! {
235
148
236 same_tag_same_children {
149 same_tag_same_children {
237 before(cx) {
150 before(cx) {
238− div(&cx).child(text("child")).finish()
151+ div(cx.bump).child(text("child")).finish()
239 }
152 }
240 after(cx) {
153 after(cx) {
241− div(&cx).child(text("child")).finish()
154+ div(cx.bump).child(text("child")).finish()
242 }
155 }
243 }
156 }
244
157
245 same_tag_update_child {
158 same_tag_update_child {
246 before(cx) {
159 before(cx) {
247− div(&cx).child(text("before")).finish()
160+ div(cx.bump).child(text("before")).finish()
248 }
161 }
249 after(cx) {
162 after(cx) {
250− div(&cx).child(text("after")).finish()
163+ div(cx.bump).child(text("after")).finish()
251 }
164 }
252 }
165 }
253
166
254 same_tag_add_child {
167 same_tag_add_child {
255 before(cx) {
168 before(cx) {
256− div(&cx).finish()
169+ div(cx.bump).finish()
257 }
170 }
258 after(cx) {
171 after(cx) {
259− div(&cx).child(text("child")).finish()
172+ div(cx.bump).child(text("child")).finish()
260 }
173 }
261 }
174 }
262
175
263 same_tag_remove_child {
176 same_tag_remove_child {
264 before(cx) {
177 before(cx) {
265− div(&cx).child(text("child")).finish()
178+ div(cx.bump).child(text("child")).finish()
266 }
179 }
267 after(cx) {
180 after(cx) {
268− div(&cx).finish()
181+ div(cx.bump).finish()
269 }
182 }
270 }
183 }
271
184
272 same_tag_update_many_children {
185 same_tag_update_many_children {
273 before(cx) {
186 before(cx) {
274− div(&cx)
187+ div(cx.bump)
275 .children([
188 .children([
276− div(&cx).finish(),
189+ div(cx.bump).finish(),
277− span(&cx).finish(),
190+ span(cx.bump).finish(),
278− p(&cx).finish(),
191+ p(cx.bump).finish(),
279 ])
192 ])
280 .finish()
193 .finish()
281 }
194 }
282 after(cx) {
195 after(cx) {
283− div(&cx)
196+ div(cx.bump)
284 .children([
197 .children([
285− span(&cx).finish(),
198+ span(cx.bump).finish(),
286− p(&cx).finish(),
199+ p(cx.bump).finish(),
287− div(&cx).finish(),
200+ div(cx.bump).finish(),
288 ])
201 ])
289 .finish()
202 .finish()
290 }
203 }
@@ -292,18 +205,18 @@ before_after! {
292
205
293 same_tag_remove_many_children {
206 same_tag_remove_many_children {
294 before(cx) {
207 before(cx) {
295− div(&cx)
208+ div(cx.bump)
296 .children([
209 .children([
297− div(&cx).finish(),
210+ div(cx.bump).finish(),
298− span(&cx).finish(),
211+ span(cx.bump).finish(),
299− p(&cx).finish(),
212+ p(cx.bump).finish(),
300 ])
213 ])
301 .finish()
214 .finish()
302 }
215 }
303 after(cx) {
216 after(cx) {
304− div(&cx)
217+ div(cx.bump)
305 .children([
218 .children([
306− div(&cx).finish(),
219+ div(cx.bump).finish(),
307 ])
220 ])
308 .finish()
221 .finish()
309 }
222 }
@@ -311,18 +224,18 @@ before_after! {
311
224
312 same_tag_add_many_children {
225 same_tag_add_many_children {
313 before(cx) {
226 before(cx) {
314− div(&cx)
227+ div(cx.bump)
315 .children([
228 .children([
316− div(&cx).finish(),
229+ div(cx.bump).finish(),
317 ])
230 ])
318 .finish()
231 .finish()
319 }
232 }
320 after(cx) {
233 after(cx) {
321− div(&cx)
234+ div(cx.bump)
322 .children([
235 .children([
323− div(&cx).finish(),
236+ div(cx.bump).finish(),
324− span(&cx).finish(),
237+ span(cx.bump).finish(),
325− p(&cx).finish(),
238+ p(cx.bump).finish(),
326 ])
239 ])
327 .finish()
240 .finish()
328 }
241 }
@@ -330,12 +243,12 @@ before_after! {
330
243
331 same_tag_different_namespace {
244 same_tag_different_namespace {
332 before(cx) {
245 before(cx) {
333− div(&cx)
246+ div(cx.bump)
334 .namespace(Some("http://example.com"))
247 .namespace(Some("http://example.com"))
335 .finish()
248 .finish()
336 }
249 }
337 after(cx) {
250 after(cx) {
338− div(&cx)
251+ div(cx.bump)
339 .namespace(Some("http://example.net"))
252 .namespace(Some("http://example.net"))
340 .finish()
253 .finish()
341 }
254 }